发明申请
US20070257999A1 VARIABLE-GAIN AMPLIFIER CIRCUIT AND METHOD OF CHANGING GAIN AMPLIFIER PATH
失效
可变增益放大器电路和更改增益放大器路径的方法
- 专利标题： VARIABLE-GAIN AMPLIFIER CIRCUIT AND METHOD OF CHANGING GAIN AMPLIFIER PATH
- 专利标题（中）： 可变增益放大器电路和更改增益放大器路径的方法
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申请号： US11428573申请日： 2006-07-05
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公开(公告)号： US20070257999A1公开(公告)日： 2007-11-08
- 发明人: Kuo-Yu Chou
- 申请人： Kuo-Yu Chou
- 申请人地址： TW Hsinchu
- 专利权人： NOVATEK MICROELECTRONICS CORP.
- 当前专利权人： NOVATEK MICROELECTRONICS CORP.
- 当前专利权人地址： TW Hsinchu
- 优先权： TW95116184 20060508
- 主分类号： H04N5/335
- IPC分类号： H04N5/335
摘要：
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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