Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2007-03-20
2007-03-20
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C713S310000
Reexamination Certificate
active
10720432
ABSTRACT:
A power control unit of a display apparatus includes an AC-to-DC converter for receiving an external AC power. A regulator receives a DC output from the converter, and is operable in one of an enabled state of outputting a target DC power when receiving a first level signal, and a disabled state of not outputting the target DC power when receiving a second level signal. An electronic switch is operable for switching from an OFF-mode, where a processor permits a delay circuit to output the second level signal to the regulator, to an ON-mode, where the electronic switch initially enables the delay circuit to output the first level signal to the regulator such that the processor receives the target DC power from the regulator and where the electronic switch outputs a trigger signal to the processor so as to enable the processor to latch the first level signal and to provide the target DC power to a display module.
REFERENCES:
patent: 3916288 (1975-10-01), Hicks et al.
patent: 5550557 (1996-08-01), Kapoor et al.
patent: 6549197 (2003-04-01), Kim
patent: 7050049 (2006-05-01), Byun
patent: 7106319 (2006-09-01), Ishiyama
Amtran Technology Co. Ltd.
Frommer & Lawrence & Haug LLP
Hjerpe Richard
Nguyen Kevin M.
Santucci Ronald R.
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