Multiplexed and pipelined column buffer for use with an...

Details Multiplexed and pipelined column buffer for use with an... Multiplexed and pipelined column buffer for use with an...

2006-12-26

2006-12-26

Srivastava, Vivek (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C250S208100

Reexamination Certificate

active

07154548

ABSTRACT:
An electronic imaging chip containing an array of photodiodes includes a multiplexed column buffer. The multiplexed column buffer serves a plurality of columns in the photodiode array. By multiplexing active amplifier elements, such as the differential gain amplifiers and the bus driver amplifiers, a wider area than one column width is available on the semiconductor chip for layout of the column buffer. In the disclosed embodiment, 4 columns share a common multiplexed column buffer. The area available for layout of the multiplexed column buffer is 4 times as wide as compared to that for a non-multiplexed column buffer.

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