Display apparatus with means for detecting changes in input vide

Details Display apparatus with means for detecting changes in input vide Display apparatus with means for detecting changes in input vide

1994-05-03

1996-11-19

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

364707, G09G 500, G06F 100

Patent

active

055767389

ABSTRACT:
Display apparatus comprises a display screen (400) and a drive circuit (401) connected to the display screen (400) to generate an image on the display screen (400) in response to an input video signal (R,G,B). A timer (405) generates a count in response to a clock signal. A detector (403,404,402) also receives the input video signal and resets the timer (405) on detection of a change in image content between successive frames of the input video signal (R,G,B). Control means (402) is connected to the timer (405) and to the drive circuit (401) for at least partially disabling the drive circuit (401) in response to the count stored in the timer (405) exceeding a predetermined threshold.

REFERENCES:
patent: 5173940 (1992-12-01), Lantz et al.
patent: 5247286 (1993-09-01), Ishikawa
patent: 5313225 (1994-05-01), Miyadera
patent: 5321811 (1994-06-01), Kato et al.
patent: 5375245 (1994-12-01), Solhjell et al.
patent: 5389952 (1995-02-01), Kikinis

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