Column analog-to-digital conversion apparatus and method...

Details Column analog-to-digital conversion apparatus and method... Column analog-to-digital conversion apparatus and method...

2007-06-12

2007-06-12

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000

Reexamination Certificate

active

11403026

ABSTRACT:
A column analog-to-digital conversion apparatus includes a first correlated double sampling (CDS) and comparison unit of a CDS and comparison circuit for generating a first comparison result signal in response to a first pixel output signal and a ramp signal, a second CDS and comparison unit of the CDS and comparison circuit for generating a second comparison result signal in response to the first pixel output signal and the ramp signal in a sub-sampling mode, and a data buffer for determining a code value of a most significant bit (MSB) based on the second comparison result signal, determining code values of remaining lower bits based on a counting value outputted from a counter, and generating a digital code including the MSB and the remaining lower bits.

REFERENCES:
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English Abstract for Publication No. 2003-101384, no month.
English Abstract for Publication No. 2003-131170, no month.
English Abstract for Publication No. 2002-0045957, no month.
English Abstract for Publication No. 2003-0008325, no month.

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