Image data compression

Details Image data compression Image data compression

1994-09-23

1996-03-05

Boudreau, Leo

Image analysis

Image compression or coding

382233, 382245, 345202, G06K 936, G06K 946

Patent

active

054974348

ABSTRACT:
The decompression side of the system has apparatus for forming a sequence of arrays of pixel display values for driving a display device from a stream of compressed data containing compressed data codes. Each of the arrays of pixel display values represents a frame of a moving image. Pixel copy codes within the stream of compressed data trigger copying of one or more previously formed pixel display values to a current position within a sequence of positions within the array along which decompression progresses. New pixel codes within the stream of compressed data trigger mapping of one or more pixel appearance values specified by the new pixel codes to respective pixel display values. The pixel display values derived from the new pixel codes are then written to a current position within the sequence. The compression side provides a complementary mechanism for generating such pixel copy codes and new pixel codes from source image data.

REFERENCES:
patent: 4707738 (1987-11-01), Ferre et al.
patent: 4847677 (1989-07-01), Music et al.
patent: 5210605 (1993-05-01), Zaccarin et al.

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