Variable quantization ADC for image sensors

Details Variable quantization ADC for image sensors Variable quantization ADC for image sensors

2006-09-19

2009-06-02

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000, C341S164000, C341S165000, C341S169000

Reexamination Certificate

active

07541963

ABSTRACT:
An A/D converter suitable for use in a system in which the signal power of noise increases with the signal power of the signal, such as an imaging system, utilizes a variable quantization system for converting analog signals into digital signals. The variable quantization is controlled so that at low signal levels the quantization is similar or identical to conventional A/D converters, while the quantization level is increased at higher signal levels. Thus, higher resolution is provided at low signal levels while lower resolution is produced at high signal levels.

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