H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/33
H04N 7/12 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01) H04N 7/50 (2006.01)
Patent
CA 2011034
A highly efficient coding apparatus for coding digital video data in a block format allowing video data compression by data transmission channel having a predetermined transmission capacity, wherein the coefficient data including a DC component and a plurality of AC components for each block is generated by the orthogonal transformation. A first distribution table of the AC coefficient data is generated during a predetermined period, and a second distribution table of accumulating type is generated from -the first distribution table. The total bit number of the ACA coefficient data during the predetermined period is controlled by the second distribution table and the predetermined transmission capacity of the data transmission channel, and the DC coefficient data, the controlled AC coefficient data and an additional code for each the predetermined period are transmitted.
Gowling Lafleur Henderson Llp
Sony Corporation
LandOfFree
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