Propagation method for remote control signal

专利摘要:
PURPOSE: A method for transmitting a remote control signal is provided to reduce background noise, improve transmission efficiency and widen frequency band and amplitude band by using ultrasonic waves as a career, and remove electronic waves. CONSTITUTION: In a method for transmitting a control signal of a remote control controlling operations of various electronic equipments in a simplex in a short distance communication, an ultrasonic wave is used as a career and the control signal is transmitted in a digital transmission method applying a PCM(Pulse Code Modulation) method. In a PCM transmission communication system using ultrasonic waves, an encoder(101) encodes input data to be loaded in a career for transmission. A filter(201) filters received data and a decoder(202) decodes filtered data.
公开号:KR20020017184A
申请号:KR1020000050360
申请日:2000-08-29
公开日:2002-03-07
发明作者:장윤석
申请人:우상엽；주식회사 실리콘 테크；
IPC主号:

专利说明:

Remote control signal transmission method {PROPAGATION METHOD FOR REMOTE CONTROL SIGNAL}
[11] The present invention relates to a remote control signal transmission method, and more particularly, to a remote control signal transmission method for transmitting a remote control signal using a PCM type of ultrasound as a transmission medium.
[12] In general, a transmission medium used for wireless transmission and reception is an electromagnetic wave, which can be divided into analog and digital methods according to a transmission method.
[13] Conventional short-range / unidirectional radio transmitters mainly use infrared remote controls, and this method has a disadvantage of poor transmittance due to obstacles due to low frequency characteristics.
[14] In recent years, RF radio transmitters have been introduced, which also have a limited bandwidth due to the use of electromagnetic waves, and are excellent in short-range wireless transmitters because they can cover far wireless.
[15] In addition, as the use of electromagnetic waves is gradually expanded, background noise caused by interference of airwaves is also concerned.
[16] The present invention has been made in view of the above, the present invention can increase the transmission state than the infrared method by using a PCM method of the carrier for transmitting the remote control signal, it is possible to more easily recognize the pulse against the surrounding background noise It is an object of the present invention to provide a remote control signal transmission method.
[1] 1 is a schematic configuration diagram of a general PCM communication system
[2] 2 is a schematic configuration diagram of a PCM transmission method communication system using ultrasonic waves for the implementation of the present invention;
[3] 3 to 6 are waveform diagrams for describing an encoding scheme according to various embodiments of the present disclosure.
[4] 3 is a waveform diagram illustrating an encoding method according to the presence or absence of a frequency
[5] 4 is a waveform diagram illustrating an encoding method according to a frequency high and high.
[6] 5 is a waveform diagram illustrating an encoding method according to data conversion.
[7] 6 is a waveform diagram illustrating an encoding method according to frequency amplitude.
[8] <Explanation of symbols for the main parts of the drawings>
[9] 101: encoder 201: filter
[10] 202: decoder
[17] In the remote control signal transmission method according to the present invention for achieving the above object, in the control signal transmission method of the remote control for controlling the operation of various electrical and electronic devices in the unidirectional transmission method in the short-range communication, using ultrasonic waves as a carrier, When transmitting the remote control signal using the PCM method characterized in that the transmission using a digital transmission method.
[18] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
[19] First, prior to describing the present invention, a brief description will be given of a general PCM communication system with reference to FIG. 1.
[20] The transmitting side is composed of a sampler 1, a quantizer 2, and an encoder 3. The analog input is periodically sampled, quantized, encoded, and transmitted. The receiving side is an inverse quantizer 11 and a decoder 12. And a filter 13, which receives the signal transmitted from the transmitting side, dequantizes and decodes the original signal.
[21] This PCM method increases the pulse energy as the pulse width is as wide as possible, and has a feature that makes it easier to recognize the pulse against the background noise.
[22] In addition, the PCM transmission method has a strong advantage in the background noise as a digital transmission method, the present invention uses the transmission medium by ultrasonic (20KHz or more) while following the PCM transmission method.
[23] Figure 2 shows a schematic configuration diagram of a PCM transmission method communication system using ultrasonic waves for implementing the present invention, the transmitting side is provided with an encoder 101 for encoding to transmit the input data on a carrier (ultrasound), and receiving The side is provided with a filter 201 and a decoder 202 for filtering the received data and then decoding it.
[24] In this case, the encoding in the encoder 101 may be used in various ways as shown in FIGS. 3 to 6.
[25] First, FIG. 3 illustrates a digital encoding method according to the presence or absence of a carrier frequency. In the form of transmission ultrasonic waves, digital recognition is performed with and without a carrier frequency.
[26] FIG. 4 illustrates a data encoding method using two carrier frequencies, in which digital recognition is performed in a section with high and low frequencies of transmission ultrasound, and FIG. 5 shows conversion of digital data, that is, a width of a row section. 6 is a method of encoding and transmitting duty converted data having a difference in the carrier frequency, and FIG. 6 is a method of digitally recognizing while taking two amplitudes of a carrier frequency while using two carrier frequencies.
[27] According to the concept of FIG. 3 to FIG. 6, the present invention variously encodes remote control control signal data to be transmitted using a carrier frequency, and the encoded data is received at the receiving side and decoded by the decoder 202. After that, the electric and electronic device is controlled by a control unit or the like not shown on the receiving side.
[28] The present invention is not limited to the above described embodiments, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.
[29] As described above, the present invention can obtain the following effects.
[30] First, the digital transmission method using the PCM method has a strong advantage in the background noise.
[31] Second, as the transmission medium uses ultrasonic waves, it is possible to increase the transmission efficiency than the infrared method.
[32] Third, the frequency band and the amplitude band become wider as the transmission medium uses ultrasonic waves.
[33] Fourth, it is possible to solve the problems caused by the existing electromagnetic waves.

权利要求:
Claims (5)
[1" claim-type="Currently amended] In the control signal transmission method of the remote control for controlling the operation of various electrical and electronic devices in the short-range communication in the unidirectional transmission method
Ultrasound is used as a carrier, the remote control signal transmission method characterized in that for transmitting the remote control signal using the ultrasonic transmission by a digital transmission method applying the PCM method.
[2" claim-type="Currently amended] The method of claim 1, wherein the digital signal is encoded so as to be digitally recognized according to the presence or absence of a carrier frequency.
[3" claim-type="Currently amended] The remote control signal transmission method of claim 1, wherein the transmission is performed by using a high frequency carrier and a low frequency carrier to digitally recognize the high frequency and low frequency sections.
[4" claim-type="Currently amended] The method of claim 1, wherein after the duty conversion of the remote control control signal data to be transmitted during the transmission, the duty-converted data is encoded with a carrier frequency for transmission.
[5" claim-type="Currently amended] The remote control signal transmission method of claim 1, wherein the transmission is encoded so as to digitally recognize the carrier frequency by varying an amplitude of the carrier frequency while using a high frequency carrier and a low frequency carrier.

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2000-08-29|Application filed by 우상엽, 주식회사 실리콘 테크

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2000-08-29|Priority to KR1020000050360A

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2002-03-07|Publication of KR20020017184A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020000050360A|KR20020017184A|2000-08-29|2000-08-29|Propagation method for remote control signal|