• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    METHOD AND APPARATUS TO CONTROL BRIGHTNESS IN A PORTABLE TERMINAL. A method and apparatus for controlling the brightness in a handheld terminal is provided. The method comprises measuring the temperature according to a predefined period, extracting a brightness value mapped to the measured temperature from a stored brightness table and changing the brightness of the portable terminal to match the extracted brightness value.
    公开号:BR112013024422B1
    申请号:R112013024422-4
    申请日:2012-03-14
    公开日:2021-03-16
    发明作者:Dong Sub Kim；Sang Yong Eom；Joon Gyu Lee
    申请人:Samsung Electronics Co., Ltd；
    IPC主号:
    专利说明:

    Field of the Invention
    [0001] The present invention relates to a method and apparatus for controlling the brightness in a portable terminal. More particularly, the present invention relates to a method and apparatus for controlling the brightness in a portable terminal according to a variation of at least one among the temperature and brightness, thereby avoiding or reducing a reduction in the useful life of a unit. when controlling the brightness of the display unit. Background of the Invention
    [0002] Due to recent rapid technical advances in information and communication technologies, semiconductor technologies and so on, handheld terminals have been widely distributed and used. Such portable terminals generally include a display unit, such as a liquid crystal display (LCD), an organic light-emitting diode (OLED) or similar.
    [0003] The properties of the display unit tend to change over time. For example, properties such as brightness, contrast ratio and so on, deteriorate over time. That is, the properties of the display unit, such as brightness, contrast ratio, and so on, are gradually deteriorated. Consequently, such a display unit cannot be used after a certain period of time (for example, after a lifetime of the display unit). The deterioration of the display unit's properties is affected by temperature and brightness. For example, the life of the display unit is reduced at high temperatures and the life of the display unit is reduced more quickly as the brightness increases. Description of the Invention Technical problem
    [0004] However, conventional handheld terminals generally maintain the brightness of the display unit at a brightness which is set by the users, regardless of the existence of a temperature variation. In addition, conventional handheld terminals generally maintain the brightness of the display unit at a brightness which is automatically adjusted, regardless of the existence of a temperature variation. As such, the service life of the display unit of such hand-held terminals according to the state of the art is rapidly reduced at elevated temperatures.
    [0005] The above information is presented as background information only to assist in understanding the present invention. No determination has been made, and no claim is made, that any of the above could be applicable as the state of the art in relation to the present invention. Solution to the Problem
    [0006] Aspects of the present invention address at least the problems and / or disadvantages mentioned above and confer at least the advantages described below. Consequently, an aspect of the present invention is to provide a method and apparatus for controlling the brightness in a portable terminal, which can appropriately control the brightness of the display unit according to a variation of at least one among temperature and brightness.
    [0007] Another aspect of the present invention is to provide a method and apparatus for controlling the brightness in a portable terminal which can extend the life of a display unit by limiting the brightness of the display unit so as not to exceed the maximum brightness in response to a temperature change with reference to a brightness table, in which the maximum brightness that can be adjusted according to the temperature and brightness is mapped and stored.
    [0008] Another aspect of the present invention is to provide a method and apparatus for controlling the brightness in a portable terminal, which inform the user about a limitation of brightness in order to prevent shortening the life of the display unit.
    [0009] In accordance with an aspect of the present invention, a method for controlling brightness in a portable terminal is provided. The method includes measuring temperature according to a predefined period of time, extracting a brightness value mapped to the measured temperature from a stored brightness table and changing the brightness of the handheld to match the extracted brightness.
    [0010] In accordance with another aspect of the present invention, an apparatus is provided for controlling the brightness in a portable terminal. The device includes a display unit, a temperature sensor for temperature measurement, a storage unit to store a brightness table which stores a temperature and brightness mapping, and a controller that extracts a brightness value mapped to the temperature measure of the brightness table and that changes the brightness of the display unit to match the extracted brightness value.
    [0011] In accordance with another aspect of the present invention, a computer readable non-transient storage medium of a portable terminal is provided. The computer-readable non-transitory storage medium stores a program to control the brightness on a portable terminal. The program includes instructions for making a computer measure the temperature according to a predefined period of time, extract a brightness value mapped to the measured temperature from a stored brightness table and change the brightness of the handheld to match the extracted brightness value.
    [0012] Other aspects, advantages and more outstanding features of the invention will be evident to those skilled in the art from the detailed description below which, taken in conjunction with the accompanying drawings, describes exemplary embodiments of the invention. Advantageous Effects of the Invention
    [0013] A method and apparatus for controlling the brightness in a portable terminal in accordance with an exemplary embodiment of the present invention can prevent a reduction in the life of a display unit by properly controlling the brightness of the display unit according to a variation temperature and brightness. That is, exemplary embodiments of the present invention can improve the life of the display unit. In addition, exemplary embodiments of the present invention can improve user convenience by displaying the maximum brightness which can be adjusted to the actual temperature, limiting the brightness of the display unit so that the user cannot adjust the brightness to a value that exceeds the maximum brightness and inform the user that the brightness of the display unit has been limited. Brief Description of Drawings
    [0014] The foregoing and other aspects, characteristics and advantages of certain exemplary embodiments of the present invention will be more evident from the description below, taken in conjunction with the accompanying drawings, in which:
    [0015] Figure 1 is a block diagram that schematically illustrates a configuration of a portable terminal according to an exemplary embodiment of the present invention;
    [0016] Figure 2 is a flow chart illustrating a method of controlling the brightness of a portable terminal with a manual mode according to an exemplary embodiment of the present invention;
    [0017] Figure 3 is a flow chart illustrating a method of controlling the brightness of a portable terminal in an automatic mode according to an exemplary embodiment of the present invention;
    [0018] Figure 4 is a flow chart illustrating a method of adjusting the brightness in a portable terminal in accordance with an exemplary embodiment of the present invention;
    [0019] Figure 5 is a series of screen shots that illustrate a method of adjusting brightness in a portable terminal in accordance with an exemplary embodiment of the present invention; and
    [0020] Figure 6 is a flow chart illustrating an operating method for adjusting the brightness of a portable terminal in accordance with an exemplary embodiment of the present invention.
    [0021] Throughout the drawings, it should be noted that similar reference numbers are used to represent similar or equal characteristics, elements and structures. Mode for the Invention
    [0022] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention, as defined by the claims and their equivalents. It includes several specific details to aid in this understanding, but these should be considered as exemplary. Consequently, those skilled in the art will recognize that various changes and modifications to the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructs can be omitted for clarity and conciseness.
    [0023] The terms and words used in the following description and claims are not limited to bibliographic meanings, but are merely used by the inventor to allow a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention is provided for purposes of illustration only and not for the purpose of limiting the invention, as defined by the appended claims and their equivalents.
    [0024] It should be understood that the singular forms "one", "one", "o" and "a" include references in the plural, unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.
    [0025] Figure 1 is a block diagram that schematically illustrates a configuration of a portable terminal according to an exemplary embodiment of the present invention.
    [0026] With reference to Figure 1, a portable terminal 100 according to an exemplary embodiment of the present invention includes a luminosity sensor 180, a temperature sensor 170, an audio processing unit 160, an input unit 140, an display unit 130, a storage unit 120 and a controller 110. As an example, the portable terminal 100 having such a configuration can appropriately adjust the brightness of the display unit 130 according to a temperature variation. The temperature variation can be measured using a temperature sensor 170. According to an exemplary embodiment of the present invention, the portable terminal 100 can reduce the brightness of the display unit 130 if the temperature increases. For example, since the life of the display unit 130 decreases rapidly as the temperature increases and / or as the brightness increases, the handheld can monitor the temperature of the display unit 130. In other words, the portable terminal 100 compensates for a reduction in service life due to the increase in temperature by increasing the service life due to reduced brightness. Consequently, as the temperature rises, the handheld terminal 100 compensates for the reduction in life caused by the increase in temperature with a corresponding increase in life caused by the reduced brightness of the display unit 130. As such, the portable terminal 100, according to exemplary embodiments of the present invention, it shows an effect of improving the service life of the display unit 130 in relation to the portable terminals of the prior art. Hereafter, each component of the handheld terminal 100 will be explained in detail.
    [0027] The audio processing unit 160 can be formed as an acoustic component. The audio processing unit 160 transmits and receives audio signals and encodes and decodes the audio signals. For example, the audio processing unit 160 may include a CODEC and an audio amplifier. The audio processing unit 160 is connected to a microphone (MIC) and a speaker (SPK). The audio processing unit 160 converts the analog voice signals input from the microphone (MIC) into digital voice signals, generates corresponding data for the digital voice signals and transmits the data to the controller 110. In addition, the audio processing unit audio processing 160 converts the digital voice signals input from the controller 110 into analog voice signals and outputs the analog voice signals through the speaker (SPK). In addition, the audio processing unit 160 can output various audio signals generated at the portable terminal 100 through the speaker (SPK). For example, processing unit 160 can output audio signals according to the playback of an audio file (e.g., MP3 file), a playback of a moving image file, and so on through the speaker. In particular, the audio processing unit 160, according to exemplary embodiments of the present invention, can emit an alarm which informs about the properties associated with the brightness of the display unit 130. For example, the audio processing unit 160 can sound an alarm indicating a limitation in the brightness of the display unit 130.
    [0028] The luminosity sensor 180 can detect the external luminosity (brightness) and transmit a light detection signal that corresponds to the external luminosity detected for the controller 110. The luminosity sensor 180 can be an optical sensor that includes a sensor device of light, such as a transistor, a photodiode or the like. A detailed explanation of the method for automatically controlling the brightness of the display unit 130 through the brightness sensor 180 will be omitted because the method may be evident to those skilled in the art.
    [0029] Temperature sensor 170 measures temperature using devices having different resistance values according to, or as a function of, temperature. As an example, a metal wire, a semiconductor or the like may have different resistance values according to the temperature. That is, the temperature sensor 170 can be any sensor that can measure the temperature. For example, temperature sensor 170 can be a thermistor. The thermistor is a type of temperature sensor and has properties whose resistance value is changed according to the temperature. Using such properties, if the thermistor and the resistance are connected in series, and if a certain voltage is applied, then the voltage between the thermistor and the resistance is also changed due to a variation in the resistance value of the thermistor according to a temperature variation. That is, controller 110 can receive a transmitted signal that corresponds to the voltage value between the thermistor and the resistance and measure the temperature.
    [0030] Input unit 140 may include input keys and function keys for receiving user input. For example, input unit 140 can include input keys and function keys to receive an entry of numbers or various sets of letter information, adjust various functions and control functions of handheld terminal 100. For example, input unit 140 can include a call key to request a voice call, a video call request key to request a video call, an end key to request an end of a voice call or a video call, a key volume control to adjust the output volume of an audio signal, an arrow key, and so on. In particular, the input unit 140 according to exemplary embodiments of the present invention can transmit signals to the controller 110 automatically related to the configuration, which automatically adjusts the brightness of the display unit 130 using at least one of a temperature sensor 170 and a light sensor 180. Such input unit 140 can be formed by one or a combination of input means, such as a touchpad, a touchscreen, a button-type keyboard, a joystick, a sphere key and so on. onwards.
    [0031] The display unit 130 displays information entered by the user or the information to be provided to the user, as well as various menus of the handheld terminal 100. For example, the display unit 130 can provide multiple screens according to the user of the terminal laptop 100, such as a standby screen, a screen for writing messages, a call screen and so on. In particular, the display unit 130, according to exemplary embodiments of the present invention, can display a brightness adjustment menu screen. As an example, display unit 130 can emit an alarm message that informs the user about the brightness properties of display unit 130. For example, display unit 130 can emit an alarm message that informs about the limitation of display unit 130 brightness. Display unit 130 can inform the user of the brightness properties (for example, display unit 130 brightness limitations) in the form of a pop-up window or in the form of a display output. an alarm icon in the indicator area. A detailed explanation of this will be provided later with reference to Figures 4 and 5. Display unit 130 can be formed as a liquid crystal display (LCD), an organic light emitting diode (Organic Light Emitting) Diode - OLED), an active matrix organic LED screen (Active Matrix Organic Light Emitting Diode - AMOLED) and so on. However, exemplary embodiments of the present invention are not limited to these examples. For example, exemplary embodiments of the present invention can be applied to all display devices which are sensitive to temperature. In other words, exemplary embodiments of the present invention can be applied to all display devices that have a life span that is sensitive to or, otherwise, varies with temperature. For example, exemplary embodiments of the present invention can be applied to all display devices whose speed of reduction in life becomes faster at high temperatures. In addition, display unit 130 can perform the function of input unit 140 if display unit 130 is formed as a touch screen.
    [0032] Storage unit 120 can store user data, and so on, as well as a program that performs operating functions in accordance with an exemplary embodiment of the present invention. For example, the storage unit 120 can store a program to control the general functioning of a portable terminal 100, an operating system (Operational System - OS) that initializes the portable terminal 100 and an application program to perform other optional functions, such as such as a camera function, a sound reproduction function, an image or video reproduction function, a Near Field Communication (NFC) function and the like. In addition, the storage unit 120 can store user data generated according to the user of the handheld terminal such as, for example, a text message, a game file, a music file, a movie file and the like. In particular, the storage unit 120, according to exemplary embodiments of the present invention, can store a brightness table that stores a mapping of brightness, temperature and brightness. An example of such a brightness table is shown in Table 1 below.

    [0033] In Table 1 above, the manual mode refers to a mode in which the brightness of the display unit 130 is kept at a brightness which is adjusted by the user regardless of the external brightness and the automatic mode refers to a mode in the which the brightness of the display unit 130 is automatically adjusted according to the external brightness that is recognized by the brightness sensor 180. With reference to Table 1 above, the brightness table is divided into manual mode and automatic mode. The automatic mode has 5 levels of temperature sections. In addition, as shown in Table 1, the brightness of the display unit 130 is mapped according to a temperature section. In addition, in Table 1 above, five levels of temperature sections were used. However, exemplary embodiments of the present invention are not limited to this example. That is, temperatures can be divided in several ways into two or more levels depending, for example, on the intention of the designer or manufacturer. In addition, the external brightness according to the automatic mode is divided into five levels. However, the external luminosity can also be divided in several ways into two or more levels depending, for example, on the intention of the designer or manufacturer. In addition, Table 1 above illustrates an example and the brightness table can be modified in various ways according to the type of display unit 130 and according to, for example, the designer's intention or the manufacturer's intention. The brightness control of the display unit 130 using the brightness table will be explained in detail below with reference to controller 110.
    [0034] Controller 110 can control the general operation of portable terminal 100. For example, controller 110 can control the operation of the various components or units included in portable terminal 100. Controller 110 can transmit a signal to the various components included in portable terminal 100 and control a signal flow between the internal blocks of portable terminal 100. In particular, controller 110 according to exemplary embodiments of the present invention can control the brightness of display unit 130 according to the variation in temperature and brightness . For this purpose, controller 110 can measure the temperature using temperature sensor 170 and extract a corresponding brightness value mapped according to the temperature measured through the brightness table stored in storage unit 120. Then controller 110 can confirm that the current brightness exceeds the brightness value obtained by comparing the current brightness of the display unit 130 with the extracted brightness value. If the handheld terminal 100 is operating in manual mode, then the current brightness can be the brightness that is preset by the user, and if the handheld terminal 100 is operating in automatic mode, then the current brightness can be the brightness that is adjusted. automatically according to the external brightness recognized by the 180 light sensor. Hereafter, the brightness control method will be explained in detail by dividing the method in manual and automatic mode.
    [0035] First, according to the manual mode, if the brightness which is predefined by the user exceeds the extracted brightness value, the controller 110 can modify the brightness of the display unit 130 to match the extracted brightness value. That is, the controller 110 can limit the brightness of the display unit 130 to prevent a reduction in the life of the display unit 130 that occurs at elevated temperatures. In addition, if the preset brightness does not exceed the extracted brightness value, then controller 110 can maintain the brightness of display unit 130 at the user preset brightness. For example, if the brightness of the display unit 130 has been manually adjusted to be 270 cd / m2 and if the brightness table such as, for example, Table 1 above is stored, then the measured temperature is less than 40 ° C, since the default brightness of 270 cd / m2 is less than the extracted brightness of 300 cd / m2, controller 110 can maintain the brightness of display unit 130 at the default brightness of 270 cd / m2. In contrast, if the temperature is between 40 ° C and 45 ° C, since the default brightness of 270 cd / m2 exceeds the extracted brightness of 250 cd / m2, controller 110 changes the brightness of display unit 130 to brightness extracted from 250 cd / m2. Similarly, if the temperature is between 45 ° C and 50 ° C, since the default brightness of 270 cd / m2 exceeds the extracted brightness of 160 cd / m2, controller 110 changes the brightness of display unit 130 to brightness extracted from 160 cd / m2. Here, the brightness control of the display unit 130 can be performed by controlling the voltage or current supplied to the emitting device of the display unit 130 or adjusting the on / off time of the emitting device. Such a method of brightness control may be evident to those skilled in the art and, therefore, its detailed description is omitted here.
    [0036] In addition, during operation of the portable terminal 100 based on manual mode, if the mode is changed to automatic mode according to a user request, then controller 110 can control to apply the brightness value according to current status to display unit 130, regardless of the brightness value that is set in manual mode. For example, if the automatic mode setting corresponds to “Exterior 1” and if the current temperature is less than 40 ° C, then, even if the brightness value for manual mode is set to 300 cd / m2, if the brightness adjustment mode is switched from manual to automatic mode, so the brightness value of the display unit 130 can be controlled to be automatically adjusted to 220 cd / m2, which corresponds to the brightness value associated with the mode setting automatic “Exterior 1” for the current temperature of less than 40 ° C. If the brightness value of the display unit 130 for manual mode has been set to 300 cd / m2, and if the mode is switched to automatic mode, then such a function may be a function for the brightness setting of the handheld 100 , so the brightness value becomes a highly visible value, while ensuring the service life of the display unit 130. In addition, if an input signal for a request to change the mode from automatic mode to manual mode is generated, then controller 110 can be controlled to change the mode to the preset manual mode.
    [0037] Also, if the handheld terminal is operating in automatic mode, then controller 110 can control the brightness of display unit 130 in response to at least one of a temperature variation and a variation in external brightness. That is, if the external brightness is constant and if the temperature is changed, then controller 110 can control to change the brightness by comparing the current brightness with a brightness value stored in the brightness table such as, for example, according with the brightness table that corresponds to the brightness in Table 1. For example, if the current brightness value (for example, brightness value) is measured as the brightness value (for example, brightness value) that corresponds to the mode automatic setting “Exterior 2” and if the temperature is changed, then controller 110 can compare the brightness value that corresponds to the new temperature with the current brightness based on the brightness table that corresponds to the automatic setting “Exterior 2 ”And control the brightness adjustment according to the comparison result. That is, controller 110 can control the brightness variation, so that the current brightness control of the display unit 130 can be less than 300 cd / m2, 250 cd / m2, 160 cd / m2, 100 cd / m2 and 40 cd / m2, respectively, according to a temperature variation in the external brightness environment that corresponds to the automatic setting “Exterior 2”.
    [0038] Also, if the temperature is constant and if the external brightness is changed, then the controller 110 can control to automatically change the brightness of the portable terminal 100 with reference to the stored brightness table such as, for example, the brightness table. brightness in Table 1, according to a variation in luminosity. For example, if the current temperature is less than 40 ° C, then controller 110 can adjust the current brightness of display unit 130 to be less than 300 cd / m2, 220 cd / m2, 160 cd / m2, 110 cd / m2 and 40 cd / m2, respectively, according to a variation of brightness that corresponds to the automatic settings "Exterior 2", "Exterior 1", "Interior 2", "Interior 1" and "Night", etc. . Similarly, controller 110 according to exemplary embodiments of the present invention can control a variation in brightness (e.g., luminosity) to be performed based on a variation in temperature and luminosity.
    [0039] In addition, in the explanation above, the values in the brightness table that correspond to the settings of the automatic mode "Exterior 2", "Exterior 1", "Interior 2", "Interior 1" and "Night", etc. are values that correspond to a certain brightness (for example, luminosity value), respectively. The values can be the experimental average in a given area. Specifically, in the case of external brightness, the values of external brightness may vary depending on the area and there may be a difference in external brightness depending on the date and time of the day. Consequently, the brightness value (for example, brightness value) that corresponds to the automatic setting "Exterior 2" and "Exterior 1" can be measured and determined for each area and time of day. Here, the values corresponding to the automatic configuration “Exterior 2” and “Exterior 1” are the values for different time intervals. For example, the value that corresponds to the automatic setting “Exterior 1” can be a brightness value (for example, a brightness value) that corresponds to a determined time interval such as, for example, a brightness value that corresponds to morning, noon or afternoon. The value that corresponds to the automatic setting “Exterior 2” can be a brightness value (for example, a brightness value) that corresponds to a determined time interval such as, for example, a brightness value that corresponds to the morning or late. Values that correspond to the automatic settings "Interior 2" and "Interior 1" are values that correspond to the brightness value (for example, the brightness value) measured indoors, which can also vary depending on the area. For example, there may be an area where a relatively bright interior light is used or an area where a relatively dark interior light is used. In addition, values that correspond to the “Exterior 2” and “Exterior 1” automatic settings can be brightness values (for example, brightness values) for each time interval. That is, the values that correspond to the settings of the automatic mode "Exterior 2" and "Exterior 1" reflect the fact that the brightness can be changed according to the external environment, that is, time intervals that correspond to noon. , morning or afternoon. As an example, such a distinction can be made even indoors. As explained above, the brightness values (for example, the brightness values) which are provided at certain times may vary, depending on the area, time of day and culture. Consequently, it may be preferable to calculate the global average for a model. In addition, it may be preferable to measure the brightness values (for example, the brightness values) differently for each area and each time interval. The measured brightness values can be applied differently for each area and each time interval.
    [0040] If the brightness of the display unit 130 exceeds the brightness which is manually adjusted by the user or the brightness which is automatically adjusted according to the external brightness, that is, if the brightness of the display unit 130 exceeds the value of predefined brightness and is limited by high temperature, the user of the portable terminal 100 can be notified of such context or fact. For example, the portable terminal 100 can inform or communicate such fact to a user through visible, auditory or tactile means. For example, controller 110 may emit an alarm message, which informs the user that the brightness of display unit 130 has been limited. The alarm message can be produced at one end of the display unit 130 in the form of a pop-up window. As another example, controller 110 can emit an alarm icon in the indicator area. In addition, controller 110 can emit an alarm sound via an audio processing unit 160 or generate a vibration via a vibration motor (not shown).
    [0041] Controller 110 can display the brightness adjustment menu screen on display unit 130 when executing the brightness adjustment mode. The user can select the mode under which to operate the portable terminal 100. For example, the user can select whether to operate the portable terminal 100 in automatic mode or in manual mode through the brightness adjustment menu. If the user selects manual mode, then controller 110 can adjust the brightness of display unit 130 to the brightness that is set by the user. At this time, controller 110 can set a threshold so that the user cannot set the brightness of display unit 130 to exceed the brightness mapped to the current temperature. In addition, if the user requests variation in the brightness of the display unit 130 to a brightness that exceeds the mapped brightness, then controller 110 may issue a warning message. The detailed explanation of it will be described later with reference to Figures 4 and 5.
    [0042] Furthermore, although not shown in Figure 1, the portable terminal 100 according to exemplary embodiments of the present invention, can optionally also include components to provide additional functions, such as a camera module for taking photographs or a moving image , a transmission reception module for transmission reception, a digital music source reproduction module, such as an MP3 module, or similar for reproducing music or media files, a near field communication module for communication of near field, a proximity sensor for proximity detection, and so on. Such components can be modified in a number of ways and, therefore, not all of such modified components are listed here. The portable terminal 100 according to exemplary embodiments of the present invention can further include components of the same level as those of the components mentioned above.
    [0043] Figure 2 is a flow chart illustrating a method of controlling the brightness of a portable terminal in a manual mode according to an exemplary embodiment of the present invention. In relation to the description in Figure 2, it is assumed that the brightness of the display unit 130 is predefined by the user.
    [0044] With reference to Figure 2, the controller 110 according to an exemplary embodiment of the present invention can periodically measure the temperature, according to a predefined period, through the temperature sensor 170 in step 201. The controller 110 can extract the brightness mapped to the measured temperature of the brightness table stored in storage unit 120 in step 203. Controller 110 can compare the default brightness of display unit 130 with the brightness extracted in step 205 and can determine whether the default brightness of the display unit display 130 exceeds the brightness extracted in step 207. If the default brightness of display unit 130 exceeds the extracted brightness, then controller 110 can modify the brightness of display unit 130 to the brightness extracted in step 209. At this time, although not shown, controller 110 may notify the user that the brightness of display unit 130 has been limited due to the high temperature. For example, communication can be performed through at least one of a visible medium (for example, an alarm message or an emission of an icon), an audible medium (for example, an emission of an alarm sound) and a tactile medium (for example, a vibration emission). Also, if the brightness of the preset display unit 130 is less than the extracted brightness, then controller 110 can maintain the brightness of the display unit 130 at the preset brightness in step 211. For example, if the brightness of the display unit is assumed to be display unit 130 is set to 270 cd / m2 and the brightness table corresponds to the brightness table provided in Table 1 above, and if the temperature measured by temperature sensor 170 is less than 40 ° C, then controller 110 you can keep the brightness of the display unit 130 at the default brightness of 270 cd / m2, since the default brightness of 270 cd / m2 of the display unit 130 is less than the extracted brightness of 300 cd / m2. In contrast, if the temperature is between 40 ° C and 45 ° C, then, since the default brightness of 270 cd / m2 of the display unit 130 exceeds the extracted brightness of 250 cd / m2, controller 110 changes the brightness display unit 130 for the extracted brightness of 250 cd / m2. If the temperature is between 45 ° C and 50 ° C, then, since the default brightness of 270 cd / m2 of the display unit 130 exceeds the extracted brightness of 160 cd / m2, the controller changes the brightness of the display unit 130 for the extracted brightness of 160 cd / m2. The brightness control of the display unit 130 according to such temperature variation can be repeated until the power of the portable terminal 100 is turned off, the display unit 130 is turned off or the mode under which the portable terminal 100 operates is changed to automatic mode.
    [0045] Furthermore, it was explained above that the brightness of the display unit 130 is controlled by comparing the preset brightness of the display unit 130 with the extracted brightness. However, exemplary embodiments of the present invention are not limited to this example. That is, the controller 110 can measure the temperature and can change the brightness of the display unit 130 to the brightness mapped to the measured temperature, which prevents or reduces the load on the controller 110, simplifying the brightness control process.
    Similarly, exemplary embodiments of the present invention can prevent rapid deterioration of the display unit's life by maintaining constant brightness at elevated temperatures by controlling to reduce the brightness of the display unit 130 as the temperature rises.
    [0047] Figure 3 is a flow chart illustrating a method of controlling the brightness of a portable terminal in an automatic mode according to an exemplary embodiment of the present invention.
    [0048] With reference to Figure 3, the controller 110 according to an exemplary embodiment of the present invention can periodically measure the temperature and brightness according to a predefined period using a temperature sensor 170 and a brightness sensor 180 in step 301. Controller 110 can determine if at least one of the temperature or brightness is changed in step 303. If neither the temperature nor the brightness is changed, then controller 110 can remain in step 303. In contrast, if at least one of the temperature or brightness is changed in step 303. temperature or brightness is changed, then controller 110 can extract the brightness value according to the elements that changed with reference to the brightness table in step 305. For example, if the brightness value is changed from a value that corresponds to the setting of the automatic “Exterior 2” mode to one that corresponds to the setting of the automatic “Exterior 2” mode and the temperature is less than 10 ° C, so the controller adjusts the brightness value extracted from 300 cd / m2 to 220 cd / m2.
    [0049] The controller 110 then compares the adjusted extracted brightness value and the default brightness value of the display unit 130 in step 307. As a result of the comparison, if the brightness value of the display unit 130 is less than that the adjusted extracted brightness value, then controller 110 can control to maintain the brightness value of the display unit 130, which is currently being set in step 311. For example, if the default brightness value of the display unit 130 is 160, so controller 110 can control to maintain the default brightness value of display unit 130.
    [0050] Also, if the currently set brightness value of display unit 130 is greater than the adjusted extracted brightness value, then the controller can control to adjust the brightness value of display unit 130 to the value extracted in step 309. For example, if the default brightness value of display unit 130 is 250 cd / m2, then controller 110 can control to adjust the default brightness value of display unit 130 to 220 cd / m2.
    [0051] At this time, controller 110 can notify the user that the brightness of display unit 130 has been limited due to high temperatures or according to a high variation in luminosity. For example, controller 110 can notify the user via visible, audible or tactile means that the brightness of the display unit 130 has been limited due to high temperatures or according to a high variation in brightness. For example, controller 110 can emit an alarm message, which informs that the brightness of display unit 130 has been limited in the form of a pop-up window or emit an alarm icon in the indicator area. The indicator area can be an area which displays the battery status, the strength of the received signal and so on, in the form of icons.
    [0052] The brightness control of the display unit 130 in accordance with such variation in temperature and brightness can be repeated until the energized portable terminal 100 is switched off or the display unit 130 is switched off.
    [0053] As explained above, exemplary embodiments of the present invention exhibit an effect of improving the life of the display unit 130 by properly controlling the brightness of the display unit 130 according to a variation of at least one among the temperature and brightness in the automatic mode state.
    [0054] Figure 4 is a flow chart illustrating a method of adjusting brightness in a portable terminal according to an exemplary embodiment of the present invention. Figure 5 is a series of screen shots that illustrate a method of adjusting brightness in a portable terminal in accordance with an exemplary embodiment of the present invention.
    [0055] With reference to Figures 4 and 5, the controller 110 according to an exemplary embodiment of the present invention can detect the execution of the brightness adjustment mode in step 401. If the brightness adjustment mode is performed, the controller 110 can control display unit 130 to display the brightness adjustment menu screen in step 403. For example, controller 110 can control display unit 130 to display a brightness adjustment menu screen such as, for example, a screen capture indicated by reference number 510 in Figure 5. The brightness adjustment menu can include an automatic mode menu 10 which can set the automatic mode, a brightness adjustment menu 20 which can manually adjust the brightness , a confirmation key 30 which performs a function of completing brightness adjustment and a cancellation key 40 which performs a cancellation function. The user can set the automatic mode by tapping or otherwise by selecting the automatic mode menu box 10. By tapping or selecting the automatic mode menu box, controller 110 can issue a check mark or other indication on the box to warn that automatic mode has been set. If automatic mode is set, then the brightness adjustment menu 20 can be displayed as the inactivated state, so that the user cannot provide inputs to adjust the brightness. For example, the brightness adjustment menu 20 can be displayed as the inactive state, so that the user cannot perform a touch input. If the check mark or other clue is displayed in the automatic mode 10 menu box and if the automatic mode 10 menu is touched, then controller 110 can remove the check mark or other clue and thereby cancel the selection automatic mode.
    [0056] The brightness adjustment menu 20 can include a status bar 24 that indicates the overall brightness and a process bar 23 that indicates the current brightness. The status bar 24 can be divided into a first brightness area 21 which indicates the selectable brightness and a second brightness area 22 which indicates the non-selectable brightness. The sizes of the first brightness area 21 and the second brightness area 22 vary depending on the temperature. The first brightness area 21 includes brightness levels that correspond to the permissible brightness levels of the display unit 130 and the second brightness area 22 includes brightness levels that correspond to the permissible brightness levels of the display unit 130 at the measured temperature. That is, the boundary between the first brightness area 21 and the second brightness area 22 can be the temperature-mapped brightness. For example, if the current temperature is between 45 ° C and 50 ° C, then the limit between the first brightness area 21 and the second brightness area 22 can be adjusted to the position that indicates a brightness of 160 cd / m2. In addition, it may be desirable for the display unit 130 to show a screen so that the first brightness area 21 can be visibly distinct from the second brightness area 22, so that the user can easily recognize the brightness that can be adjusted. In order to distinguish the first brightness area 21 from the second brightness area 22, the controller 110 can measure the temperature and extract the brightness mapped to the measured temperature from the brightness table when executing the manual mode.
    [0057] If the brightness setting screen is being output by display unit 130, then controller 110 can determine whether a brightness variation is requested in step 405. If the brightness variation is not required, then the controller 110 can perform a corresponding function in step 407. For example, when the automatic mode 10 menu is touched, controller 110 can produce a check mark or other indication in a box and change the brightness adjustment menu 20 to a inactivated state. In addition, in response to the input of the cancel key 40 (for example, a touch), controller 110 may return to the previous step. In contrast, if a variation in brightness is requested, then controller 110 can determine whether the requested variation brightness exceeds the brightness that corresponds to the limit between the first area 21 and the second area 22, that is, the brightness mapped to the current temperature in step 409. If the requested variation brightness exceeds the mapped brightness, then controller 110 can issue a warning message informing the user that it is not possible to adjust the variation brightness requested in step 411 and process bar 23 can be moved to a position that corresponds to the brightness mapped in step 413. For example, as shown in a screenshot that corresponds to the reference numeral 520 in Figure 5, if the user touches the second area 22 for a brightness variation, controller 110 can display process bar 23 after moving process bar 23 to the touched position, as shown in the screen capture, which corresponds to reference numeral 530, issue a warning message 25 which informs the user that it is not possible to change to the requested brightness, as shown in the screen capture corresponding to the reference numeral 540, and to display process bar 23 after moving process bar 23 to the boundary between the first area 21 and the second area 22. Also, the process associated with the screen capture that corresponds to the reference numeral 530 can be omitted. That is, when a touch occurs in the second area 22, the controller 110 can move the process bar 23 to the limit between the first area 21 and the second area 22 and issue a warning message.
    [0058] Still, it was illustrated in Figure 5 that the brightness is changed through a touch. However, exemplary embodiments of the present invention are not limited to this example. For example, the user can change the brightness by dragging while touching the process bar 23. As another example, the user can change the brightness by otherwise manipulating input 140 in order to enter corresponding instructions for changing the brightness.
    [0059] If the requested variation brightness does not exceed the mapped brightness, then controller 110 can move process bar 23 to the touch position and change the brightness of display unit 130 to a brightness that corresponds to the position touched on step 415 and can move to step 417. Controller 110 can determine whether the brightness setting has been completed. In other words, controller 110 can determine whether confirmation key 30 was entered in step 417. In the case where the brightness setting has not been completed, controller 110 can return to step 405. In the case where the brightness setting was completed, controller 110 can end display unit 130 brightness adjustment mode.
    [0060] Figure 6 is a flow chart illustrating a method of operating the brightness adjustment of a portable terminal in accordance with an exemplary embodiment of the present invention.
    [0061] With reference to Figure 6, according to the method of adjusting the brightness in a portable terminal 100 in accordance with exemplary embodiments of the present invention, first, if power is supplied to a portable terminal 100, controller 110 can control for initialize each configuration of handheld terminal 100. If the initialization process is completed, then controller 110 can display the standby screen according to schedule information predefined in step 601.
    [0062] Then, controller 110 checks the brightness adjustment mode in step 603 and determines whether the brightness adjustment mode currently set is the manual mode in step 605. If the brightness adjustment mode currently set is the manual, then controller 110 measures the current temperature in step 607. Then controller 110 can control to check the extracted brightness value in manual mode, as provided in the stored brightness table such as, for example, the temperature table brightness shown in Table 1, according to the current measured temperature, compare the preset brightness value of the display unit 130 with the brightness value extracted in manual mode according to the current temperature and adjust the brightness according to the result of the comparison in step 609. That is, if the default brightness value of display unit 130 is greater than the extracted brightness value that corresponds to the manual mode according to the temperature, then controller 110 can control the value brightness of the display unit 130 to be set to the brightness value that corresponds to the manual mode and, if the default brightness value of the display unit 130 is less than the extracted brightness value that corresponds to the manual mode according to the temperature, then, the controller 110 can control to maintain the brightness value of the display unit 130.
    [0063] In addition, as a result of checking the brightness adjustment mode in step 605, if the mode is set to automatic mode, then controller 110 measures the current temperature and brightness in step 611. In addition, the controller 110 can extract the extracted brightness value that corresponds to the automatic mode, which corresponds to the temperature and luminosity measured with reference to the brightness table already stored in step 613. Then, controller 110 can adjust the brightness value of the display unit 130 to match the extracted brightness value that corresponds to automatic mode.
    [0064] Also, controller 110 can control to determine whether mode variation occurred in step 615 and, if mode variation occurred, then controller 110 can control to adjust the brightness value according to the mode variation in step 617. Specifically, if the mode is changed from manual mode to automatic mode, controller 110 can control to change the brightness value of display unit 130 which is set by the user to the brightness value of automatic mode, which corresponds to the current temperature and brightness. In addition, if the mode is changed from automatic mode to manual mode, then controller 110 can control to change the brightness value of display unit 130 to the brightness value that is set by the user in the previous manual mode. At this time, controller 110 can assist in setting the brightness value of display unit 130 to the extracted brightness value which corresponds to the manual mode which corresponds to the corresponding temperature when measuring the current temperature. If no brightness value has been previously set, then controller 110 can control to have a certain brightness value set as a standard brightness value. If a separate mode variation did not occur in step 615, then controller 110 can control to support the brightness adjustment according to the mode currently defined in step 619.
    [0065] The controller 110 can then control to return to step 601 and display the standby screen or support the user function of the portable terminal 100 which corresponds to an input signal input from input unit 140 or similar .
    [0066] A method for controlling the brightness according to the exemplary embodiments of the present invention can be implemented in a form of program command executable by various computer means and be recorded on a non-transient computer-readable recording medium. The computer-readable recording medium may include a program command, a data file and an individual data structure or a combination thereof. The program command recorded on a recording medium can be specially designed or configured for exemplary embodiments of the present invention or can be known to those skilled in the field of computer software.
    [0067] The computer-readable recording medium includes Magnetic Media, such as hard disk, floppy disk or magnetic tape, Optical Media, such as Compact Disc Read Only Memory (CD-ROM) or versatile disc digital (Digital Versatile Disc - DVD), Magneto-Optical Media, such as a floptical disk, a hardware device, such as storing and executing program commands in ROM, RAM, flash memory and so on . In addition, the program command includes machine language code created by a compiler and high-level language code executable by a computer using an interpreter. The preceding hardware device can be configured to be operated as at least one software module to perform an operation of the exemplary embodiments of the present invention.
    [0068] As explained above, a method and apparatus for controlling the brightness in a portable terminal in accordance with an exemplary embodiment of the present invention can prevent a reduction in the life of a display unit by properly controlling the brightness of the display unit according to a variation in temperature and brightness. That is, exemplary embodiments of the present invention can improve the life of the display unit. In addition, exemplary embodiments of the present invention can improve convenience for the user by displaying the maximum brightness which can be adjusted to the current temperature, limiting the brightness of the display unit so that the user cannot adjust the brightness to a value that exceed the maximum brightness and inform the user that the display unit's brightness has been limited.
    [0069] Although the invention has been shown and described with reference to certain exemplary embodiments of it, it will be understood by those skilled in the art that various changes in form and details can be made in it without departing from the spirit and scope of the invention, as defined by the appended claims and their equivalents.
    权利要求:
    Claims (12)
    [0001]
    1. Method for controlling the brightness of a display unit (130) in a portable terminal, the method comprising: measuring (201) the temperature according to a predefined period of time; and extracting (203) a brightness value mapped to the measured temperature from a stored brightness table; the method characterized by the fact that it also comprises changing (209) a brightness of the display unit (130) to correspond to the extracted brightness value, in which changing the brightness of the handheld terminal comprises: checking the current brightness of the display unit ( 130); compare (207) the current brightness with the extracted brightness value; change (209) the brightness of the display unit (130) to match the extracted brightness value if the current brightness exceeds the extracted brightness value; and maintaining (211) the brightness of the display unit (130) at the current brightness, if the current brightness is less than the extracted brightness value.
    [0002]
    2. Method according to claim 2, characterized by the fact that changing the brightness of the display unit (130) further comprises: issuing an alarm notification that notifies the user that the brightness of the display unit (130) has been limited, if the current brightness exceeds the extracted brightness value.
    [0003]
    3. Method, according to claim 1, characterized by the fact that it also comprises: requesting (405) a change of brightness of the display unit (130); compare (409) the requested altered brightness with the mapped brightness value for the measured temperature; and changing (413) the brightness of the display unit (130) to the mapped brightness if the requested changed brightness exceeds the mapped brightness value for the measured temperature.
    [0004]
    4. Method according to claim 3, characterized by the fact that it further comprises: changing (415) the brightness of the display unit (130) to the requested changed brightness if the requested changed brightness is less than the brightness value mapped to the measured temperature.
    [0005]
    5. Method according to claim 3, characterized by the fact that it further comprises: issuing (411) an alert notification that notifies the user that the brightness of the display unit (130) cannot be changed to the altered brightness requested if the requested altered brightness exceeds the brightness value mapped to the measured temperature.
    [0006]
    6. Method according to claim 3, characterized by the fact that the request for changing the brightness of the display unit (130) comprises receiving a request for changing the brightness in a brightness adjustment menu that is entered by a user.
    [0007]
    7. Method, according to claim 1, characterized by the fact that it also comprises: measuring (301) an external luminosity; request a change in brightness automatically according to a variation of at least one of the measured luminosity and the measured temperature; extract (305) a brightness value according to a variation of at least one among external brightness and temperature of the brightness table, and change (309) the brightness of the display unit (130) to match the extracted brightness value .
    [0008]
    8. Apparatus for controlling the brightness of the display unit (130) in a portable terminal (100), in which the apparatus comprises: the display unit (130); a temperature sensor (170) for measuring the temperature; a storage unit (120) for storing a gloss table that stores a temperature and gloss mapping; and a controller (110) configured to extract a brightness value mapped to the measured temperature from the brightness table, characterized by the fact that the controller is further configured to change the brightness of the display unit (130) to match the value the extracted brightness, in which changing the brightness of the display unit (130) also comprises: checking a current brightness of the display unit (130) with the extracted brightness value; compare the current brightness of the display unit (130) with the extracted brightness value; modify the brightness of the display unit (130) to match the extracted brightness value, if the current brightness exceeds the extracted brightness value; and maintaining the brightness of the display unit (130) at the current brightness, if the current brightness is less than the extracted brightness value.
    [0009]
    9. Apparatus according to claim 8, characterized by the fact that the controller (110) issues an alarm notification, which notifies a user that the brightness of the display unit (130) has been limited, at one end of the display unit. display (130) if the current brightness exceeds the extracted brightness value.
    [0010]
    10. The apparatus according to claim 8, characterized by the fact that it further comprises: a brightness sensor that detects the external brightness, in which the controller (110) changes the brightness of the display unit (130) according to a variation of at least one of the external luminosity and the measured temperature.
    [0011]
    11. Apparatus according to claim 8, characterized by the fact that the controller (110) compares a requested altered brightness with the brightness value mapped to the measured temperature, if the controller (110) receives a change in brightness from the request of the display unit (130), and changes the brightness of the display unit (130) to the mapped brightness value and issues a warning notification that notifies the user that the brightness of the display unit (130) has been limited if the brightness requested change exceeds the mapped brightness value, changes the brightness of the display unit (130) to the requested changed brightness if the requested changed brightness is less than the mapped brightness value for the measured temperature.
    [0012]
    12. Apparatus according to claim 8, characterized by the fact that the controller (110) displays a status bar that indicates the total brightness when issuing a brightness adjustment screen, and divides the status bar into a first brightness area, which includes brightness levels that correspond to the permissible brightness of the display unit (130) and a second brightness area which includes the brightness levels corresponding to the inadmissible brightness levels of the display unit (130) at the measured temperature .
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    CA2830482C|2019-06-04|
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    RU2013142960A|2015-03-27|
    EP2503535A3|2015-01-14|
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-10-22| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2021-01-05| B09A| Decision: intention to grant|
    2021-03-16| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 14/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2011-0025019|2011-03-21|
    KR1020110025019A|KR101760695B1|2011-03-21|2011-03-21|Method and apparatus for controling brightness in a portable terminal|
    PCT/KR2012/001843|WO2012128498A2|2011-03-21|2012-03-14|Method and apparatus for controlling brightness in a portable terminal|
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