Picture data compressing and recording apparatus for recording c

Details Picture data compressing and recording apparatus for recording c Picture data compressing and recording apparatus for recording c

1989-09-14

1991-11-26

Envall, Jr., Roy N.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358335, H04N 576

Patent

active

050687441

ABSTRACT:
A picture data compressing and recording apparatus divides picture data into blocks and applies two-dimensional orthogonal transformation to the blocks of picture data. The apparatus records DC components and AC components of the transformed data collectively yet, independently of each other in a recording medium. The apparatus is capable of reproducing a simplified picture by reading out the DC component only. The apparatus is also capable of recording a luminance signal Y and chrominance signals Cr and Cb independently of each other and reading out the luminance signal Y only so as to reproduce a black-and-white picture.

REFERENCES:
patent: 4580162 (1986-04-01), Mori
patent: 4633330 (1986-12-01), Yamamitsu et al.
patent: 4791623 (1988-12-01), Deiotte
patent: 4887151 (1989-12-01), Wataya
patent: 4910724 (1990-03-01), Sakagami et al.
patent: 4984076 (1991-01-01), Watanabe et al.
Wen-Hsiung Chen, et al., "Scene Adaptive Coder", IEEE Trans. on Comm. vol. COM-32, No. 3, pp. 225-232 (1984).

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