公开(公告)号：WO2006001994A3

公开(公告)日：2007-11-01

申请号：PCT/US2005020110

申请日：2005-06-08

Applicant: CISCO TECH INC ,  CHEN WEN-HSIUNG ,  WU FANG ,  PELTON GREGORY D ,  TOEBES JOHN A ,  ROSENFELD DOV

Inventor： CHEN WEN-HSIUNG ,  WU FANG ,  PELTON GREGORY D ,  TOEBES JOHN A ,  ROSENFELD DOV

IPC: G06K9/36 ,  G06K9/46 ,  H03M7/00 ,  H03M7/40

CPC classification number: H03M7/40 ,  H04N19/91 ,  H04N19/93

Abstract: A method for variable length coding an ordered series of digital signals, e.g., of quantized transform coefficients of a block of image data with a most likely-to-occur amplitude, e.g., O, and at least one other amplitude, e.g., 1, to form a set of codewords. The method includes establishing a breakpoint (301) along the ordering to define a first contiguous region and a second contiguous region, such that clusters of consecutive signals of any value other than the most likely-to-occur value occur mostly in the first contiguous region. The method includes encoding the signals in the first region using a first region encoding method (303) suitable for encoding clusters; and encoding the signals in the second region using a second region encoding method (305). The first region and second region encoding methods include variable length codes such that relatively short codewords are formed to represent relatively more likely-to-occur sequences.

Abstract translation: 一种用于可变长度编码有序序列数字信号的方法，例如，具有最可能发生的幅度的图像数据块的量化变换系数，例如O，以及至少一个其它振幅，例如1， 以形成一组码字。 该方法包括沿着排序建立断点（301）以定义第一连续区域和第二连续区域，使得除了最可能出现的值之外的任何值的连续信号的群集主要出现在第一邻接区域 。 该方法包括使用适于编码簇的第一区域编码方法（303）对第一区域中的信号进行编码; 以及使用第二区域编码方法（305）对所述第二区域中的信号进行编码。 第一区域和第二区域编码方法包括可变长度代码，使得形成相对较短的码字以表示相对更可能发生的序列。

公开(公告)号：WO2006001994A2

公开(公告)日：2006-01-05

申请号：PCT/US2005/020110

申请日：2005-06-08

Applicant: CISCO TECHNOLOGY, INC. ,  CHEN, Wen-Hsiung ,  WU, Fang ,  PELTON, Gregory, D. ,  TOEBES, John, A. ,  ROSENFELD, Dov

Inventor： CHEN, Wen-Hsiung ,  WU, Fang ,  PELTON, Gregory, D. ,  TOEBES, John, A. ,  ROSENFELD, Dov

IPC: G06K9/36 ,  H03M7/34

CPC classification number: H03M7/40 ,  H04N19/91 ,  H04N19/93

Abstract: A method for variable length coding an ordered series of digital signals, e.g., of quantized transform coefficients of a block of image data with a most likely-to-occur amplitude, e.g., 0, and at least one other amplitude, e.g., 1, to form a set of codewords. The method includes establishing a breakpoint along the ordering to define a first contiguous region and a second contiguous region, such that clusters of consecutive signals of any value other than the most likely-to-occur value occur mostly in the first contiguous region. The method includes encoding the signals in the first region using a first region encoding method suitable for encoding clusters; and encoding the signals in the second region using a second region encoding method. The first region and second region encoding methods include variable length codes such that relatively short codewords are formed to represent relatively more likely-to-occur sequences.

Abstract translation: 一种用于可变长度编码有序序列数字信号的方法，例如，具有最可能发生的幅度的图像数据块的量化变换系数，例如0和至少一个其它振幅，例如1， 以形成一组码字。 该方法包括沿着排序建立断点以定义第一连续区域和第二连续区域，使得除了最可能出现的值之外的任何值的连续信号的群集主要出现在第一邻接区域中。 该方法包括使用适于编码簇的第一区域编码方法对第一区域中的信号进行编码; 以及使用第二区域编码方法对所述第二区域中的信号进行编码。 第一区域和第二区域编码方法包括可变长度代码，使得形成相对较短的码字以表示相对更可能发生的序列。