Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Patent
1994-07-21
1996-02-20
Chan, Wing F.
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
348555, 348569, G09G 300
Patent
active
054933170
ABSTRACT:
An on-screen display device which comprises: a microprocessor responsive to signals from a key pad and to a synchronizing signal in received video picture signals for providing digital display signals corresponding to the synchronizing signals and digital signals corresponding to the signals from the key pad; a digital-to-analog converter for converting the digital signals into analog voltage signals, and for generating an oscillating frequency signal in response to the digital display signals to adjust the position and size of characters displayed on the screen; and an on-screen display circuit for receiving the synchronizing signals and for receiving the digital signals from the microprocessor and the oscillation frequency signal from the digital-to-analog converter and generating signals for controlling a display of the synchronizing frequencies and picture control on the screen as on-screen display characters.
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Chan Wing F.
Chang Vivian W.
Samsung Electronics Co,. Ltd.
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