Apparatus for image data transposition and compression/decompres

Details Apparatus for image data transposition and compression/decompres Apparatus for image data transposition and compression/decompres

1989-10-10

1991-10-08

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

3582612, 358430, H04N 1417

Patent

active

050559192

ABSTRACT:
An application specific integrated circuit (ASIC) allows for the transposition, compression, and decompression of acquired image video data. The transposition process associated with this ASIC provides for the reordering of received vertically scanned segments of acquired image data into horizontal rows and provides for the deleting of overscan and underscan pixel data associated with each of the vertically scanned segments of acquired data. This transposed data is then compressed. Alternatively, the application specific integrated circuit of this invention provides for the decompression of previously compressed data.

REFERENCES:
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patent: 4087788 (1978-05-01), Johannesson
patent: 4091424 (1978-05-01), Widergren
patent: 4363036 (1982-12-01), Subramaniam
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patent: 4672186 (1987-06-01), Van Tyne
patent: 4783834 (1988-11-01), Anderson
Some Extensions of the Ordering Techniques for Compression of Two-Level Facsimile Pictures, F. W. Mounts, A. N. Netravli & K. A. Walsh, 1978 A T & T Company, The Bell System Technical Journal, pp. 3057-3067.
Two Dimensional Facsimile Source Encoding Based on a Markov Model by Dieter Praus NTZ-Aufsatze, pp. 358-363.
Ordering Techniques for Coding of Two-Tone Facsimile Pictures by A. N. Netravali, F. W. Mounts & E. G. Bowen, 1976 A T & T Company--The Bell System Technical Journal, pp. 1539-1553.

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