Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2008-05-06
2008-05-06
Dharia, Prabodh (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
Reexamination Certificate
active
10687742
ABSTRACT:
A display device according to the present invention includes a switching regulator control circuit formed of TFTs. A digital switching regulator control circuit is composed of an AD converter circuit, a CPU, a pulse generation circuit or the like. An analog switching regulator control circuit is composed of an error amplifier circuit, a triangle wave generation circuit, a PWM comparator or the like. By integrally forming the switching regulator control circuit on a display device, the problem of the conventional portable information equipment as to the reduction in size and weight can be solved.
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Office Action (Application No. 200310102888.1) Dated May 18, 2007.
Dharia Prabodh
Robinson Eric J.
Robinson Intellectual Property Law Offic, P.C.
Semiconductor Energy Laboratory Co,. Ltd.
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