发明名称 |
Analog-to-digital converter for controlling gain by changing a system parameter, image sensor including the analog-to-digital converter and method of operating the analog-to-digital converter |
摘要 |
Example embodiments are directed to an analog-to-digital converter (ADC) that controls a gain by changing a system parameter, an image sensor including the ADC and a method of operating the ADC. The ADC includes a sigma-delta modulator which receives an input signal and a clock signal and sigma-delta modulates the input signal into a digital output signal based on the clock signal and an accumulation unit which accumulates the digital output signal at each cycle of the clock signal according to an analog-to-digital conversion time and outputs an accumulation result. A system parameter is varied during the analog-to-digital conversion time to control a gain of the ADC. The method of operating the analog-to-digital converter includes sigma-delta modulating an input signal into a digital output signal in response to a clock signal input to the ADC; and accumulating the digital output signal at each cycle of the input clock signal according to an analog-to-digital conversion time and outputting an accumulation result. |
申请公布号 |
US8605176(B2) |
申请公布日期 |
2013.12.10 |
申请号 |
US20100879684 |
申请日期 |
2010.09.10 |
申请人 |
JUNG WUN-KI;HAM SEOG HEON;LEE DONG HUN;YOO KWI SUNG;KWON MIN HO;SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JUNG WUN-KI;HAM SEOG HEON;LEE DONG HUN;YOO KWI SUNG;KWON MIN HO |
分类号 |
H04N3/14 |
主分类号 |
H04N3/14 |
代理机构 |
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