Variable-gain amplifier circuit and method of changing gain...

Details Variable-gain amplifier circuit and method of changing gain... Variable-gain amplifier circuit and method of changing gain...

2006-07-05

2010-06-08

Chan, Jason (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

Reexamination Certificate

active

07733395

ABSTRACT:
A variable-gain amplifier circuit and a method of changing gain amplifier paths are provided for receiving and amplifying an image sensing signal. The variable-gain amplifier circuit includes variable path and gain amplifier circuits. According to the amplification factor for the image sensing signal, the gain amplifier paths in the variable path and gain amplifier circuits are changed based on a control signal, so as to achieve the appropriate construction of the variable-gain amplifier circuit. The image sensing signal generates the required image result through appropriate numbers of variable gain amplifiers, thereby decreasing the power consumption of the circuit and reducing the design requirement of the circuit.

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“Office Action of Taiwan counterpart application”, issued on Apr. 3, 2009, p. 1-9.

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