Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2011-05-03
2011-05-03
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S211000, C323S265000, C363S015000, C315S291000
Reexamination Certificate
active
07936349
ABSTRACT:
A safety circuit16for monitoring the waveform of a start signal outputted from a microcomputer40ais provided in a power supply circuit. If a start signal inputted to the safety circuit16is not a pulse wave, a power supply cutoff section16ccuts off the output of the start signal to a DC/AC circuit13, thereby cutting off the supply of power by the DC/AC circuit13from a primary side to a secondary side. Thereby, it is possible to prevent the supply of power by the power supply circuit without providing an additional microcomputer or IC for monitoring a failure and a temporary malfunction of a control microcomputer and to safely prevent the supply of power at the time of a latch-up caused by noise or a breakage.
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The Extended European Examination report dated Jan. 27, 2011.
Funai Electric Co. Ltd.
Shalwala Bipin
Spar Ilana
Yokoi Toshiyuki
Yokoi & Co. U.S.A., Inc.
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