Method of coding and decoding motion vector and apparatus theref

Details Method of coding and decoding motion vector and apparatus theref Method of coding and decoding motion vector and apparatus theref

1998-12-18

2000-03-21

Tung, Bryan

Television

Bandwidth reduction system

Data rate reduction

348420, H04N 732

Patent

active

060408634

ABSTRACT:
A difference vector determination element used in an apparatus for coding motion vector includes register memories (PMV) of which number is equal to sum of maximum transmission numbers N and M of forward predictive and backward predictive motion vectors. Motion vector counter counts the number of transmission of motion vectors to output a motion vector count signal. Register index designation signal generator designates indices of (1.about.N(N+1).about.(N+M)) in order of transmission of forward predictive or backward predictive motion vectors on the basis of attached information such as motion compensation mode, prediction type, and picture structure, etc. of motion vector, and the motion vector count signal from the motion vector counter to allow switch to perform switching operation, thus allowing register memories (PMV) and motion vectors to have one-to-one correspondence relationship. Difference circuit determines a difference between a motion vector inputted thereto and a value taken out from register memory (PMV) caused to correspond to the motion vector on the basis of motion compensation mode, etc.

REFERENCES:
patent: 5132792 (1992-07-01), Yonemitsu
patent: 5210605 (1993-05-01), Zaccarin
patent: 5424779 (1995-06-01), Odaka
patent: 5455629 (1995-10-01), Sun
patent: 5675387 (1997-10-01), Hoogenboom
Test Model Editing Committee, International Organisation for Standardisation, "Coded Representation of Picture and Audio Information", ISO-IEC/JTC1/SC29/WG11 MPEG93/225b Test Model 4, pp. 1-78, Feb. 1993
International Organization for Standardization, "Information Technology-Generic Coding of Moving Pictures and Associated Audio", ISO/IEC JTC1/SC29 WG11/602, Seoul, Korea, pp. 1-176, Nov. 1993.

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