Deflection circuits for wide screen displays
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United States of America Patent
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-
Nov 2, 1999
Grant Date -
N/A
app pub date -
Sep 22, 1997
filing date -
Apr 24, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A television receiver comprising a video display with a wide width to height ratio, horizontal and vertical deflection circuits for generating selectable rasters of different sizes on the video display by modifying horizontal deflection signals, a circuit (Rs) responsive to a vertical deflection signal and generating a first control signal, a waveform generator responsive to the first control signal and generating a substantially parabolic signal, a raster distortion correction circuit responsive to the substantially parabolic signal, and a source of a second control signal indicative of a selected horizontal raster width and the horizontal deflection being modified responsive to the second control signal.
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