发明名称 |
Method and apparatus for encoding transmitting and receiving image by pulse code modulation |
摘要 |
An image encoding/transmitting apparatus and method implemented by applying the vector quantization technology utilizing the differential pulse code modulation system in which an estimated error signal is compared with a threshold value to generate a change or movement detection signal and a differential signal, which are then quantized so as to be transmitted and received wherein the polarity of the differential signal is judged by a polarity judgment circuit, a polarity is assigned to the threshold value based on the judgment value by a polarity adding circuit, the differential signal is corrected depending on the threshold value with the polarity, and the corrected differential signal is quantized so as to be transmitted and received.
|
申请公布号 |
US4809067(A) |
申请公布日期 |
1989.02.28 |
申请号 |
US19870053627 |
申请日期 |
1987.05.26 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
KIKUCHI, HIROAKI;ASANO, KENICHI;TANNO, OKIKAZU;GODA, NAOFUMI |
分类号 |
G06T9/00;H04N7/28;H04N7/32;H04N7/36;H04N7/50;(IPC1-7):H04N7/13 |
主分类号 |
G06T9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|