Multiple crawbar switching in charge domain linear operations

Details Multiple crawbar switching in charge domain linear operations Multiple crawbar switching in charge domain linear operations

2003-05-07

2009-11-24

Tran, Sinh (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S294000, C348S308000, C250S208100

Reexamination Certificate

active

07623171

ABSTRACT:
An analog differential voltage circuit is disclosed that enables the combination of a plurality of voltage signals in the analog domain of a CMOS processing system prior to being received by a differential amplifier and prior to being digitized. By programming the column decoder to read out a plurality of column buffer circuits, a plurality of linear operations (e.g., addition, substation, averaging, weighted, sum) may be performed on the plurality of analog voltage levels prior to their being digitized.

REFERENCES:
patent: 6166367 (2000-12-01), Cho
patent: 6512546 (2003-01-01), Decker et al.
patent: 6529237 (2003-03-01), Tsay et al.
Fraenkel, Miriam; CMOS Imager for Cellular Applications and Methods of Using Such; Dec. 5, 2002; WIPO, WO 02/098112 A2; p. 19 and Figure 4.

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