发明名称 |
VARIABLE-LENGTH ADAPTIVE DYNAMIC RANGE CODING OF A DIGITAL VIDEO SIGNAL |
摘要 |
A high efficiency coding apparatus performs the control so that the amount of generated information does not surpass a transmission capacity of a transmission path when variable-length coding for varying a word length corresponding to a dynamic range. With respect to a still block, distribution in which a movement amount is introduced is formed taking into account that frame-dropping processing is made to obtain the number of dynamic range occurrence. Not only threshold values in the level direction for defining a word length but also movement threshold values for the frame-dropping processing are changed to control the amount of generated information. As a result, the control of the amount of generated information is performed excellently without an increase in quantization errors. |
申请公布号 |
AU1677788(A) |
申请公布日期 |
1988.12.01 |
申请号 |
AU19880016777 |
申请日期 |
1988.05.30 |
申请人 |
SONY CORP. |
发明人 |
TETSUJIRO KONDO;YASUHIRO FUJIMORI |
分类号 |
H04N5/926;H04N19/00;H04N19/12;H04N19/126;H04N19/13;H04N19/132;H04N19/136;H04N19/137;H04N19/146;H04N19/172;H04N19/176;H04N19/196;H04N19/46;H04N19/51;H04N19/587;H04N19/59;H04N19/65;H04N19/70;H04N19/85;H04N19/91;H04N19/98 |
主分类号 |
H04N5/926 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|