Two-stage codec for frame-based program images

Details Two-stage codec for frame-based program images Two-stage codec for frame-based program images

2007-10-30

2007-10-30

Williams, Howard L. (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

C341S087000

Reexamination Certificate

active

11472157

ABSTRACT:
A method for compressing a frame-based program image (FBPI) includes identifying common envelope data in the FBPI. Identified common envelope data is removed from the FBPI. At least one instance of an identical repeated frame of the FBPI is identified. A first instance of an identified identical repeated frame is replaced with a pointer to a second instance of the identified identical repeated frame. A method for decompressing a compressed FBPI includes identifying at least one pointer in a compressed FBPI, wherein the at least one pointer comprises a reference to an identical repeated frame of the FBPI. The identified at least one pointer is replaced with the identical repeated frame to which the at least one pointer refers, to generate a half-decompressed FBPI. Envelope data is inserted into the half-decompressed FBPI to generate a full-decompressed FBPI. A computer program product and a system for compressing/decompressing an FBPI are also provided.

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Honeywell Experion PKS R300, ARC Advisory Group, Apr. 2005.

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