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    • 12. 发明授权
    • Variable length coding and decoding using counters
    • 可变长度编码和解码使用计数器
    • US09088296B2
    • 2015-07-21
    • US13339913
    • 2011-12-29
    • Bin LiJizheng Xu
    • Bin LiJizheng Xu
    • H04N7/26H04N7/40H03M7/40H03M7/30H04N19/61H04N19/91
    • H03M7/40H03M7/6088H04N19/61H04N19/91
    • Disclosed herein are representative embodiments for performing entropy coding or decoding using a counter-based scheme. In one exemplary embodiment disclosed herein, a first codeword is received from compressed digital media data. The first codeword is decoded into a first digital media data value by referencing a codeword table that associates the first codeword with the first digital media data value and a second codeword with a second digital media data value. A counter for counting occurrences of the first digital media data value is incremented. The value of the first counter is compared with the value of a second counter that counts occurrences of a second digital media data value. If the value of the first counter and the value of the second counter are equal (or greater than or equal), the codeword table is updated to swap codewords between the first and second digital media values.
    • 这里公开了用于使用基于计数器的方案执行熵编码或解码的代表性实施例。 在本文公开的一个示例性实施例中,从压缩数字媒体数据接收第一码字。 通过参考将第一码字与第一数字媒体数据值相关联的码字表和第二数字媒体数据值的第二码字,将第一码字解码为第一数字媒体数据值。 用于计数第一数字媒体数据值的出现的计数器增加。 将第一计数器的值与计数第二数字媒体数据值的出现的第二计数器的值进行比较。 如果第一计数器的值和第二计数器的值相等(或大于或等于),则更新代码字表以交换第一和第二数字媒体值之间的码字。