CIG Distortion correction with delay lines

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358237, H04N 574

Patent

active

045716315

ABSTRACT:
Distortion occurring when tan .theta. mapped CIG video is projected onto a ide angle non-tan .theta. display is corrected in both line direction and cross-line direction by varying the propagation time of the pixels within a line to achieve a non-distorted line and by buffering the lines of the display to allow for selective fetching of lines for display in a non-distorted manner. Both pixels and lines are delayed by variable amounts in accordance with their temporal location within a line or frame, respectively.

REFERENCES:
patent: 4125862 (1978-11-01), Catano
patent: 4152725 (1979-05-01), Beckmann
patent: 4153915 (1979-05-01), McKechnie
patent: 4163249 (1979-07-01), Michael
patent: 4228465 (1980-10-01), Stone

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