Compact image transmission system and image reproducing device c

Details Compact image transmission system and image reproducing device c Compact image transmission system and image reproducing device c

1997-09-02

1998-12-08

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

3488452, H04N 712

Patent

active

058477675

ABSTRACT:
Processing is carried out assuming that a picture structure is fixed to I picture and P picture and that motion compensation value is fixed. Header analyzing section 11 identifies the type of picture of input video code in case of P picture, IDCT section 14 carries out IDCT to calculate a differential value of each block. An adder 15 adds the differential value and a motion compensated block obtained by motion compensating, by forward prediction section 18, a video code of preceding frame stored in a preceding frame section 16. Thus, an image is expanded and reproduced. By fixing the picture structure to I picture and P picture, it is possible to dispense with judgement whether or not the picture is B picture and backward prediction or bidirectional prediction in processing of the B picture.

REFERENCES:
patent: 5262854 (1993-11-01), Ng
patent: 5440345 (1995-08-01), Shimoda
patent: 5510839 (1996-04-01), Hamano et al.
patent: 5539466 (1996-07-01), Igarashi et al.

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