Image processing method and analog front end circuit

Details Image processing method and analog front end circuit Image processing method and analog front end circuit

2006-08-28

2008-05-20

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

C348S229100

Reexamination Certificate

active

07375665

ABSTRACT:
An image processing system includes a charge-coupled device sensor having a wide input dynamic range, and an analog front end circuit coupled to the charge-coupled device sensor. The front end circuit includes an analog-to-digital converter module to receive an input analog signal from the charge-coupled device sensor, the analog-to-digital converter module having a signal to noise ratio corresponding to a predetermined number of bits and a higher resolution than the predetermined number of bits. The front end circuit further includes a digital multiplier module coupled to the analog-to-digital converter module, the analog-to-digital converter module and the digital multiplier module to adjust a full scale input range at the analog-to-digital converter module over the wide range without loss in analog-to-digital conversion resolution.

REFERENCES:
patent: 6441851 (2002-08-01), Yonemoto
patent: 6670901 (2003-12-01), Brueske et al.
patent: 7042383 (2006-05-01), Mishra et al.
patent: 7081921 (2006-07-01), Nitta et al.

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