• 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:
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling reproduction speed in an optical disc apparatus, wherein a buffer is provided in a sequential reproduction mode for sequentially reading and reproducing A / V data recorded on an optical disc such as a CD or a DVD. If the transfer rate of data temporarily stored therein is 1x and the address information of the CD or DVD is not normally detected, the current playback speed is decelerated quickly, so that the pause and play operations are performed during the sequential playback operation. It is a very useful invention to be able to efficiently prevent the A / V data from being reproduced and discontinuously repeated a predetermined number of times.
    公开号:KR20040062808A
    申请号:KR1020030000339
    申请日:2003-01-03
    公开日:2004-07-09
    发明作者:윤정채
    申请人:주식회사 히타치엘지 데이터 스토리지 코리아；
    IPC主号:
    专利说明:

    {Method for controlling a play speed in optical disc device}
    [8] The present invention relates to an optical disc apparatus for variably controlling playback speed in a sequential playback mode in which A / V data recorded on an optical disc such as a CD or a DVD is sequentially read out and reproduced. It relates to a reproduction speed control method of the.
    [9] Recently, an optical disc such as a CD (CD) or DVD (DVD) capable of recording and storing high-quality audio data and high-quality video data, and a CD player (CD-Player) capable of reading and playing data recorded on the optical disc, or Optical disk devices such as DVD-Players are widely used and commercialized.
    [10] And. In the above optical disk device, when a sequential playback operation of sequentially reading and reproducing A / V data recorded on the optical disk is performed according to a user's request, the A / V data read from the optical disk is stored in the device. After temporarily storing the buffer, the A / V data is reproduced and output at a data rate corresponding to 1x speed.
    [11] On the other hand, when the A / V data recorded on the optical disc is read at a high speed, for example, 8 times, the speed of entering the buffer is 8 times and the speed of exiting is 1 times, so that the buffer overflows. In this case, the optical disk device pauses the operation of reading A / V data recorded on the optical disk, and a predetermined time has elapsed, or the amount of data temporarily stored in the buffer is less than a predetermined reference value. In this case, the A / V data recorded on the optical disc is read again from the pause position and stored in the buffer repeatedly.
    [12] However, in order to prevent the overflow from occurring in the buffer as described above, the data read operation for reading the A / V data recorded on the optical disc is paused, and then the pause position is searched for reading again. During the process, data reading may fail due to the influence of a defect or the like on the pause position.
    [13] In this case, conventionally, data reading is attempted at the pause position. When the number of retries exceeds a predetermined number of times, the data rate is retried by lowering the speed.
    [14] In general, a low speed makes data reading easier, so the data can be read, but the data in the buffer becomes under-run during this series of retries and lowering speeds. The output may be temporarily cut off.
    [15] Accordingly, the present invention was created to solve the above problems, and in the sequential playback mode in which A / V data recorded on an optical disc such as a CD or a DVD is sequentially read out and reproduced, To provide a playback speed control method in an optical disk device for quickly decelerating the current playback speed when the transfer rate of data temporarily stored in the buffer is 1x and the address information of the CD or DVD is not normally detected. The purpose is to.
    [1] 1 illustrates a configuration of an optical disk apparatus to which a reproduction speed control method according to the present invention is applied.
    [2] 2 is a flowchart illustrating an operation of controlling reproduction speed in the optical disk apparatus according to the present invention.
    [3] ※ Explanation of code for main part of drawing
    [4] 10: optical disc 11: optical pickup
    [5] 12: VDP system 13: spindle motor
    [6] 14: sled motor 15: servo
    [7] 16: control unit
    [16] A reproduction speed control method in an optical disc apparatus according to the present invention for achieving the above object comprises the steps of: reading data from an optical disc; Determining whether the read data is sequential; And three steps of reducing data read speed according to whether or not the data read of the optical disc has failed, when the reading is performed sequentially.
    [17] In addition, the reproduction speed control method in the optical disk apparatus according to the present invention, the first step of reading data from the optical disk; Determining whether the reproduction speed of the read data is 1x; And if the reproduction speed is 1x and the data readout fails from the optical disc as a result of the determination, 3 steps of reducing the data readout speed,
    [18] In addition, the playback speed control method in the optical disk apparatus according to the present invention, in the sequential playback mode of sequentially reading and reproducing the data recorded on the optical disk, to determine whether the transmission rate of the data temporarily stored in the buffer and whether the address information of the optical disk is normally detected Step 1 to do; And two steps for selectively and variably controlling the current reproduction speed according to the transmission rate of the confirmed data and whether the address information is normally detected.
    [19] Hereinafter, a preferred embodiment of a method of controlling reproduction speed in an optical disk apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
    [20] FIG. 1 shows a configuration of an optical disk apparatus to which a reproduction speed control method according to the present invention is applied. For example, an optical pickup apparatus such as a CD player or a DVD player may be used for an optical pickup 11 or a VDP (Video Disc Play). The system 12, the spindle motor 13, the sled motor 14, the servo unit 15, and the controller 16 may be configured to be included.
    [21] On the other hand, when the optical disk 10, such as a CD (CD), DVD (DVD) or the like is inserted and seated in the optical disk device configured as described above, the servo unit 15, the spindle motor 13 and the sled motor ( 14), the optical disk 10 is rotated at high speed, and a series of initial servo operations are performed to move the optical pickup 11 to a preset initial position.
    [22] In the VDP system 12, the data of the optical disc read out by the optical pickup 11 is reproduced as original audio and video signals. The VDP system temporarily stores the data read from the optical disc. A buffer (unsigned) for storing is included.
    [23] In addition, in the sequential playback mode in which the control unit 16 operates and controls the servo unit 15 and the VDP system 12 according to a user's request, and sequentially reads and reproduces the data recorded on the optical disc, It is confirmed whether the transfer rate of data temporarily stored in the buffer and the address information of the optical disc are normally detected.
    [24] When the data transfer rate is 1x and the address information of the optical disc is not normally detected, a series of playback speed control operations for rapidly decelerating the current data playback speed are performed. Same as
    [25] FIG. 2 is a flowchart illustrating a method for controlling playback speed in the optical disk apparatus according to the present invention. In the control unit 16 of the optical disk apparatus, an optical disk (CD) or DVD (DVD) or the like in the apparatus is used. 10 is inserted and seated, the operation of the servo unit 15 is controlled so that a series of initial servo operations for driving the spindle motor 13 and the sled motor 14 are performed, and a user's request is performed. A data reproducing operation corresponding to the above is performed (S10).
    [26] Accordingly, the A / V data recorded on the optical disc 10 is read by the optical pickup 11 and temporarily stored in a buffer built into the VDP system 12, and then temporarily stored in the A / V data. / V data to be reproduced and output as the original audio and video signals, wherein the control unit 16, if the playback operation requested by the user is a sequential playback operation to sequentially read and reproduce the A / V data (S11), When the data transfer rate output from the buffer included in the VDP system 12 corresponds to 1x (S12), the current data read mode is determined to be a sequential playback mode.
    [27] The sequential playback operation may be determined as a sequential playback operation by referring to an address of a data block required by a data read command, and if the address of the data block is continuous, the sequential playback operation may be performed. Regeneration may be a representative example. Of course, when the reproduction is performed by a program chain such as a DVD, the sequential determination may be a different method.
    [28] As a result of the determination, in the sequential playback mode, when the data is read from the disk, such as when the buffer overflows and the read operation is suspended and then attempts to read again, the address information of the optical disk is not normally detected (S13). For example, when the optical disc 10 is a CD, it is checked whether sub-Q information is normally detected. When the optical disc 10 is a DVD, a disc ID ( If it is determined that the Disc ID) information is normally detected and it is determined that the address information of the optical disc is not normally detected, the current data reading speed is immediately reduced without retrying to read the sub cue or the disc ID information again. The speed is reduced at double speed (S14).
    [29] For example, when the current data read speed is 8x, the speed is reduced to 4x or less, or when the current data read speed is 4x, a series of speed control operations are performed to reduce the speed to 2x or less. .
    [30] On the other hand, if it is determined that the address information of the optical disc is normally detected, the current data read speed is maintained as it is, and the A / V data temporarily stored in the buffer is read and reproduced and output as original audio and video signals. It is made (S15).
    [31] On the other hand, in the microcomputer 16, the reproduction operation requested by the user does not reproduce and output the A / V data recorded on the optical disc as original audio and video, but copies the data for copying to another recording medium or another device. In the case of, it is determined that the current data reading mode is a data copy mode.
    [32] The A / V data temporarily stored in the buffer is read and transmitted at a high speed. If the data read fails due to a defect of a disc, the data read operation is paused. After repeating a series of operations for rereading the failed recording position a predetermined number of times, a normal retry regeneration control operation for decelerating the current data reading speed to a low speed is performed (S16).
    [33] Thereafter, the above operation is repeatedly performed until the reproduction stop is requested from the user or the reproduction of the data recorded on the optical disc is completed (S17).
    [34] Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.
    [35] The playback speed control method in the optical disk device according to the present invention constituted and constructed as described above is a sequential playback for sequentially reading and reproducing A / V data recorded on an optical disk such as a CD or a DVD. In the mode, when the transfer rate of the data temporarily stored in the buffer is 1x and the address information of the CD or DVD is not normally detected, the current playback speed is decelerated quickly, so that during the sequential playback operation, pause and play ( Play) operation is repeated a predetermined number of times, so that the A / V data can be effectively prevented from being discontinuously reproduced and output.
    权利要求:
    Claims (15)
    [1" claim-type="Currently amended] Step 1 of reading data from the optical disc;
    Determining whether the read data is sequential; And
    And determining the data read speed according to whether or not the data read of the optical disc has failed.
    [2" claim-type="Currently amended] The method of claim 1,
    The third step is to determine the read speed of the optical disk device, after reproducing the failure to read the data of the optical disk, without retrying the read speed.
    [3" claim-type="Currently amended] The method of claim 1,
    The reproduction speed control method of the optical disc apparatus, characterized in that the double speed for reading data in the first step is faster than the reproduction double speed, the reproduction double speed is 1x.
    [4" claim-type="Currently amended] The method of claim 1,
    The data read out in step 1 is sequentially stored in a buffer, and when the buffer overflows, the reading is stopped, and when the buffer data becomes less than or equal to a predetermined amount, data reading is restarted from the reading stop position. A playback speed control method in an optical disk device, characterized in that the.
    [5" claim-type="Currently amended] The method of claim 4, wherein
    And the third step is to reduce the read speed when the data read fails when the data read is restarted at the read stop position of the first step.
    [6" claim-type="Currently amended] The method of claim 1,
    The data readout failure determination of the disc is based on a failure to read the address of the data.
    [7" claim-type="Currently amended] The method of claim 6,
    The address of the data is sub cue (SUB-Q) information when the optical disc is a CD, and an ID value when the optical disc is a DVD.
    [8" claim-type="Currently amended] Step 1 of reading data from the optical disc;
    Determining whether the reproduction speed of the read data is 1x; And
    And a third step of reducing the data readout speed when the readout speed is 1x and the data readout fails from the optical disc as a result of the determination.
    [9" claim-type="Currently amended] The method of claim 8,
    The data read out in step 1 is sequentially stored in a buffer, and when the buffer overflows, data reading is stopped, and when a predetermined time or buffer data becomes less than a predetermined amount, reading is performed at the reading stop position. Will restart,
    And said step 3 reduces the read speed when the data read fails when the data read restarts from the read stop position of the first step.
    [10" claim-type="Currently amended] The method of claim 8,
    The data readout failure determination of the disc is based on a failure to read the address of the data.
    [11" claim-type="Currently amended] The method of claim 10,
    And the address of the data is sub cue (SUB-Q) information when the optical disc is a CD, or an ID value when the optical disc is a DVD.
    [12" claim-type="Currently amended] In a sequential playback mode in which data recorded on an optical disc is sequentially read out and reproduced, step 1 of checking whether a transfer rate of data temporarily stored in a buffer and address information of the optical disc are normally detected; And
    And variablely controlling the current reproduction speed according to the confirmed transmission rate of the data and whether the address information is normally detected.
    [13" claim-type="Currently amended] The method of claim 12,
    In step 1, when the optical disc is a CD, it is checked whether sub-Q information is normally detected. When the optical disc is a DVD, it is determined whether disc ID information is normally detected. A reproduction speed control method for an optical disk device.
    [14" claim-type="Currently amended] The method of claim 12,
    And said second step is to decelerate and control the current playback speed when the confirmed data transfer rate is 1x and the address information is not normally detected.
    [15" claim-type="Currently amended] The method of claim 12,
    If a disc defect occurs while the data rate is not 1x, the data readout is paused and a retry regeneration control operation is performed to repeat the operation of rereading the recording position a predetermined number of times. The playback speed control method of the optical disk device, characterized by further comprising the step.
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    同族专利:
    公开号 | 公开日
    CN1534624A|2004-10-06|
    KR100499584B1|2005-07-07|
    US20040141438A1|2004-07-22|
    US7554911B2|2009-06-30|
    CN1310217C|2007-04-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2003-01-03|Application filed by 주식회사 히타치엘지 데이터 스토리지 코리아
    2003-01-03|Priority to KR20030000339A
    2004-07-09|Publication of KR20040062808A
    2005-07-07|Application granted
    2005-07-07|Publication of KR100499584B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR20030000339A|KR100499584B1|2003-01-03|2003-01-03|Method for controlling data read speed for medium|
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