发明名称 |
METHOD OF REDUCING THE DATA RATE OF DATA SUCCESSIVELY TRANSMITTED BETWEEN A TRANSMITTER AND A RECEIVER, AND A SYSTEM FOR CARRYING OUT THE METHOD |
摘要 |
The method and the system for compression of the flow of data between a television transmitter and a television receiver make provision at the transmitter for a differential coding system comprising a circuit for computation and propagation of coding costs with respect to visibility thresholds at which a coding error becomes apparent on the received image, coding being performed by utilizing at least two different quantization and/or prediction characteristics. A device connected to the differential coding system transmits to the receiver an indication relating to a change in characteristic instead of the data corresponding to the image point to be transmitted when the point is located within an image zone in which the change is necessary. A device is provided at the receiver for reconstructing the data corresponding to the non-transmitted point as a function of data of points already known to the receiver. |
申请公布号 |
DE3369817(D1) |
申请公布日期 |
1987.03.19 |
申请号 |
DE19833369817 |
申请日期 |
1983.08.09 |
申请人 |
THOMSON-CSF |
发明人 |
CATROS, JEAN-YVES |
分类号 |
G06T9/00;H04N7/32;(IPC1-7):H04N7/13 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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