Television – Image signal processing circuitry specific to television – Picture blanking
Patent
1996-05-30
1998-05-05
Burgess, Glenton B.
Television
Image signal processing circuitry specific to television
Picture blanking
348704, 348730, H04N 324
Patent
active
057482594
ABSTRACT:
Disclosed is a screen size control circuit for controlling the screen size of a television according to a power state by using a blanking control signal synchronized by a horizontal or vertical synchronizing signal when a television is being turned on or off. The screen size control circuit includes a signal processing section for generating a composite video signal capable of displaying a TV broadcasting signal received from an antenna, a control signal generating section for controlling a blanking width by generating a blanking control signal increasing or decreasing linearly according to the power condition, and a display section for displaying the composite video signal according to the blanking control signal. As such, the blanking width is modified according to the constitution of the blanking control signal generating section and the inputted synchronizing signal so that the screen opening and closing effect is obtained, and thus eye strain is reduced.
REFERENCES:
patent: 4021849 (1977-05-01), Wheeler
patent: 5089898 (1992-02-01), Kim
patent: 5220426 (1993-06-01), Karlock
patent: 5471251 (1995-11-01), Inaba et al.
Burgess Glenton B.
Daewoo Electronics Co. Ltd.
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