Picture coding method, picture coding apparatus and image...

Details Picture coding method, picture coding apparatus and image... Picture coding method, picture coding apparatus and image...

2006-07-25

2006-07-25

Le, Vu (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07082163

ABSTRACT:
A picture coding apparatus contains a rate control unit100, an image buffer200, an orthogonal transformation unit300, a quantizing unit400, a variable length coding unit500, a motion predicting unit600, a coding unit700, and an output buffer800. The rate control unit100allocates a target code amount to each of pictures, and transfers a quantizing value100awhich is determined by a code amount to the quantizing unit400. This target code amount is calculated by adding a reference target code amount to a correction value. The correction value is calculated based on a difference between a predetermined target value and an actual value of a remaining coding picture amount of the output buffer800.

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