Motion image coding apparatus adaptively controlling reference f

Details Motion image coding apparatus adaptively controlling reference f Motion image coding apparatus adaptively controlling reference f

1998-04-22

2000-04-18

Tung, Bryan

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

348409, 348415, H04N 732

Patent

active

060524170

ABSTRACT:
A motion image coding apparatus providing enhanced image quality as compared with the prior art includes a coding unit for coding first, second and third frames, a prediction efficiency calculating circuit for calculating prediction efficiency in inter-frame prediction, in coding by the coding unit using said first or second frame as a reference frame, and a reference frame interval determining circuit for determining a reference frame interval which is a time interval between the first and second frames, time interval between the second frames and time interval between the first frames.

REFERENCES:
patent: 5694171 (1997-12-01), Katto
patent: 5963258 (1999-10-01), Nishikawa

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