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    • 4. 发明申请
    • METHOD AND DEVICE FOR REPRODUCING DATA
    • 用于再现数据的方法和设备
    • WO1995009421A1
    • 1995-04-06
    • PCT/JP1994001604
    • 1994-09-28
    • SONY CORPORATIONIWAMURA, RyuichiMASUDA, ShozoAKIYAMA, Yoshiyuki
    • SONY CORPORATION
    • G11B20/18
    • H03M13/35G11B20/1809G11B20/1833G11B2020/10666G11B2020/183H03M13/27
    • Data are recorded on an optical disk (1) by adding double parities of internal and external parities to the data. The internal parity is added to interleaved data and used for the correction of internal codes, and the external parity is added to non-interleaved data and the internal parity and used for the correction of the external codes. Reproduced data from the disk (1) are supplied to and stored in a ring buffer memory (5) and, at the same time, supplied to an error correction circuit (71) which corrects the errors in the external codes. The correction results are supplied to the memory (5) and overwritten therein. The data stored in the memory (5) are again read out to the circuit (71) and the errors in the internal codes are corrected. For sector address detection by a sector detection circuit (72), the data of which the errors of the external codes are corrected are used. In special reproduction, only the external code correction is performed.
    • 通过向数据添加内部和外部奇偶校验的双重奇偶校验来将数据记录在光盘(1)上。 内部奇偶校验被添加到交织数据中,用于校正内部代码,外部奇偶校验被添加到非交错数据和内部奇偶校验,并用于校正外部代码。 将来自盘(1)的再现数据提供给环形缓冲存储器(5)并存储在环形缓冲存储器(5)中,并且同时被提供给校正外部代码中的错误的纠错电路(71)。 校正结果被提供给存储器(5)并被重写。 存储在存储器(5)中的数据再次被读出到电路(71),并且校正内部代码中的错误。 对于通过扇区检测电路(72)的扇区地址检测,使用校正外部码的错误的数据。 在特殊再现中,仅执行外部代码校正。
    • 9. 发明申请
    • METHOD AND DEVICE FOR TRANSMITTING DATA, DATA DECODER, AND DATA RECORDING MEDIUM
    • 用于发送数据,数据解码器和数据记录介质的方法和设备
    • WO1995008823A1
    • 1995-03-30
    • PCT/JP1994001556
    • 1994-09-21
    • SONY CORPORATIONKAWAMURA, MakotoFUJINAMI, YasushiVELTMAN, Markus
    • SONY CORPORATION
    • G11B20/12
    • H04N21/8455G11B20/00086G11B20/12G11B27/034G11B27/105G11B27/11G11B27/3027G11B2220/20G11B2220/65H04N7/52H04N21/4325H04N21/4334H04N21/4341
    • Transmission of information is performed by detecting a first area point from coded data, generating a packet containing position information about a second area point before or after the first area point based on the first area point, and then, multiplexing the packet at a prescribed position of the transmitted coded data. A data decoding device which decodes reproduced data read out from a recording medium on which coded data prepared by multiplexing such a packet has a separating means which separates the coded data and the packet containig the position information about at least one second area point before or after the first area point and at least one piece of additional information about the coded data from the coded data, decoding means which decodes the coded data separated by means of the separating means, and control means which controls the read-out position of the recording medium based on the position information and additional information at the time of special reproduction. Therefore, the data recorded on the recording medium can be searched at a desired speed by using the data of the transmitted packet at the time of special reproduction.
    • 通过从编码数据检测第一区域点来执行信息的传输,基于第一区域点产生包含第一区域点之前或之后的第二区域的位置信息的分组,然后在预定位置复用分组 的传输编码数据。 一种解码从记录介质读出的再现数据的数据解码装置,在该记录介质上,通过复用这样的数据包准备的编码数据具有分离装置,该分离装置将编码数据和数据包分离出包含关于至少一个第二区域点之前或之后的位置信息 关于来自编码数据的编码数据的第一区域点和至少一条附加信息,对通过分离装置分离的编码数据进行解码的解码装置,以及控制记录介质的读出位置的控制装置 基于特殊再现时的位置信息和附加信息。 因此,可以通过在特殊再现时使用发送的分组的数据,以期望的速度来搜索记录在记录介质上的数据。