Coding according to degree of coding difficulty in conformity wi

Details Coding according to degree of coding difficulty in conformity wi Coding according to degree of coding difficulty in conformity wi

1997-01-02

1999-10-05

Tung, Bryan

Television

Bandwidth reduction system

Plural video programs in single channel

348405, 348423, H04N 724

Patent

active

059632569

ABSTRACT:
In multiplexing a plurality of coded data, degrees of difficulty of coding of the data are measured, coding rate for each of the data is decided by allotting a certain target bit rate with a ratio of the each of the measured degrees of difficulty of coding so that the bit rate of the multiplexed data becomes equal to the target bit rate, the data is then coded in response to the decided coding rates, and the coded data is multiplexed before being outputted to a transmission line or recording medium. Thus, the bit rate of the outputted data is always kept at the target value to improve the usage rate of a transmission line.

REFERENCES:
patent: 5231484 (1993-07-01), Gonzales
patent: 5497338 (1996-03-01), Miyake
patent: 5555273 (1996-09-01), Ishino
patent: 5579317 (1996-11-01), Pang
patent: 5608656 (1997-03-01), Purcell
patent: 5686965 (1997-11-01), Auld
patent: 5757421 (1998-05-01), Kato
patent: 5805220 (1998-09-01), Keesman

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