Method and apparatus for enabling transmission of variable length encoded data in a low signal to noise ratio environment
    1.
    发明授权
    Method and apparatus for enabling transmission of variable length encoded data in a low signal to noise ratio environment 有权
    能够在低信噪比环境下传输可变长度编码数据的方法和装置

    公开(公告)号:US06697435B2

    公开(公告)日:2004-02-24

    申请号:US10101697

    申请日:2002-03-21

    IPC分类号: H03M730

    摘要: In order to transmit variable length encoded data in low signal to noise ratio environments, a first data pattern is added to a beginning portion of encoded data to signify a beginning of the encoded data. Further, a second data pattern is added to end portion of the encoded data to signify and end of the encoded data. Additionally, since the encoded data may naturally include the second data pattern and thereby mistakenly indicate an end of the encoded data, the encoded data is first checked for such a pattern. If the pattern is found within the encoded data, a new pattern is substituted therefore. In order to counter errors, patterns similar to the first data pattern are also substituted with new patterns. As such, a variable length encoded data can be transmitted in a low signal to noise ratio environment, and can thereafter be easily decoded.

    摘要翻译: 为了在低信噪比环境中发送可变长度编码数据,将第一数据模式添加到编码数据的开始部分,以表示编码数据的开始。 此外,将第二数据模式添加到编码数据的结束部分以表示和结束编码数据。 此外,由于编码数据可能自然地包括第二数据模式,从而错误地指示编码数据的结束,所以首先检查编码数据的这种模式。 如果在编码数据中找到模式,则会替换新的模式。 为了对抗错误,类似于第一个数据模式的模式也被新的模式所取代。 因此,可变长度编码数据可以在低信噪比环境中传输,并且此后可以容易地解码。

    Method and apparatus for enabling transmission of variable length encoded data in a low signal to noise ratio environment

    公开(公告)号:US06563879B1

    公开(公告)日:2003-05-13

    申请号:US09312711

    申请日:1999-05-17

    IPC分类号: H03M730

    摘要: In order to transmit variable length encoded data in low signal to noise ratio environments, a first data pattern is added to a beginning portion of encoded data to signify a beginning of the encoded data. Further, a second data pattern is added to end portion of the encoded data to signify and end of the encoded data. Additionally, since the encoded data may naturally include the second data pattern and thereby mistakenly indicate an end of the encoded data, the encoded data is first checked for such a pattern. If the pattern is found within the encoded data, a new pattern is substituted therefore. In order to counter errors, patterns similar to the first data pattern are also substituted with new patterns. As such, a variable length encoded data can be transmitted in a low signal to noise ratio environment, and can thereafter be easily decoded.