Apparatus for recording/reproducing or transmitting/receiving signal
data having a portion of an error correction code replaced with other
information and methods thereof
    15.
    发明授权
    Apparatus for recording/reproducing or transmitting/receiving signal data having a portion of an error correction code replaced with other information and methods thereof 失效
    用于记录/再现或发送/接收信号数据的装置,其具有用其他信息及其方法替代的纠错码的一部分

    公开(公告)号:US5930367A

    公开(公告)日:1999-07-27

    申请号:US705188

    申请日:1996-08-29

    IPC分类号: G11B20/00 G11B20/18 H04K1/00

    摘要: An apparatus for processing digital data signals which may be used in recording/reproducing and transmitting/receiving of such signals. During recording or transmission, error correction codes are added to the digital signals and a portion of such error correction codes is replaced with other information. Such other information may provide an indication as whether the digital signals are original signals or a copy thereof. During reproduction or reception, the other information is extracted and utilized in a predetermined manner. For example, reproduced digital signals may or may not be outputted depending on whether the extracted information indicates that the digital signals are original signals or a copy thereof. As a result, unauthorized copying of signals may be discouraged or prevented. Furthermore, by replacing a portion of the error correction code with the other information, storage capacity for the digital signals and/or the rate for processing such signals may not be adversely effected.

    摘要翻译: 一种用于处理可用于记录/再现和发送/接收这种信号的数字数据信号的装置。 在记录或发送期间,纠错码被添加到数字信号中,并且这些纠错码的一部分被其它信息所取代。 这样的其他信息可以提供数字信号是原始信号还是其副本的指示。 在再现或接收期间,以预定的方式提取和使用其他信息。 例如,根据所提取的信息是指示数字信号是原始信号还是其副本,再现的数字信号可以输出也可以不输出。 结果,可能不鼓励或防止信号的未授权复制。 此外,通过用其他信息替换纠错码的一部分,可能不会不利地影响数字信号的存储容量和/或用于处理这些信号的速率。

    Method for transmitting data, apparatus for recording data, medium for recording data, and apparatus for reproducing data
    17.
    发明授权
    Method for transmitting data, apparatus for recording data, medium for recording data, and apparatus for reproducing data 失效
    用于发送数据的方法,用于记录数据的装置,用于记录数据的介质,以及用于再现数据的装置

    公开(公告)号:US07401228B2

    公开(公告)日:2008-07-15

    申请号:US10211499

    申请日:2002-08-02

    IPC分类号: G06F11/00

    摘要: A data transmitting method, a data recording apparatus, a data record medium and a data reproducing apparatus are provided to disallow the encryption to be easily decoded and keep the secrecy of key information higher. The data transmitting apparatus includes an error correction coding process block. In the block, an input converting circuit operates to perform a logic operation with respect to the information data from an interface circuit 12 according to the key data. The converted information data is sent to an encoder 15 for generating parity data. This parity data is mixed with information data before conversion in a mixing circuit. The error correction coding block operates to send the resulting data to a modulating circuit 17 for modulating the data. The modulated data is recorded on a disk record medium.

    摘要翻译: 提供数据发送方法,数据记录装置,数据记录介质和数据再现装置,以使得不易加密被解码,并使密钥信息的保密性更高。 数据发送装置包括纠错编码处理块。 在该方框中,输入转换电路根据密钥数据对来自接口电路12的信息数据进行逻辑运算。 转换的信息数据被发送到用于产生奇偶校验数据的编码器15。 该混合电路中的该奇偶校验数据与转换前的信息数据混合。 纠错编码块用于将结果数据发送到用于调制数据的调制电路17。 调制数据被记录在磁盘记录介质上。