Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-07-12
2011-07-12
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S212000, C315S291000, C315S312000, C362S097300
Reexamination Certificate
active
07978171
ABSTRACT:
A control circuit of a driving circuit for controlling a light emitting diode (LED) light source having a plurality of areas is provided. The control circuit includes the error amplifiers receiving a feed back current signal and a external reference voltage, and generating an error signal; a buffer register receiving a serial digital signal and generating the parallel digital signals; a work register receiving the parallel digital signals and a trigger signal, and outputting the parallel digital signals when the trigger signal is at a relatively high level; and a switch module having the power switches, each of which receives the error signal and the parallel digital signal for generating a driving signal to control a driving current of a specific area of the light source, in order to control the brightness in each area of the LED light source.
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Kang Chin-Feng
Su Che-Yi
Wu Chang-yu
Wu Tsai-Fu
Analog Integrations Corporation
Crawley Keith
Gottlieb Rackman & Reisman P.C.
Shalwala Bipin
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