Arithmetic logic unit design in column analog to digital converter with shared gray code generator for correlated multiple samplings

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United States of America Patent

PATENT NO 11632512
APP PUB NO 20220269482A1
SERIAL NO

17180520

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Abstract

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An arithmetic logic unit (ALU) includes a front end latch stage coupled to latch Gray code (GC) outputs of a GC generator in response to a comparator output. A signal latch stage is coupled to latch outputs of the front end latch stage. A GC to binary stage is coupled to generate a binary representation of the GC outputs latched in the signal latch stage. First inputs of an adder stage are coupled to receive outputs of the GC to binary stage. Outputs of the adder stage are generated in response to the first inputs and second inputs of the adder stage. A pre-latch stage is coupled to latch outputs of the adder stage. A feedback latch stage is coupled to latch outputs of the pre-latch stage. The second inputs of the adder stage are coupled to receive outputs of the feedback latch stage.

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Patent Owner(s)

  • OMNIVISION TECHNOLOGIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Chun-Hsiang San Jose, US 11 37
Fan, Lihang Sunnyvale, US 10 15
Qu, Min Mountain View, US 34 263
Tsai, Chao-Fang San Jose, US 8 15

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