Method for operating a pixel cell using multiple pulses to a...

Details Method for operating a pixel cell using multiple pulses to a... Method for operating a pixel cell using multiple pulses to a...

2005-08-30

2010-11-09

Luu, Thanh X (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C348S308000

Reexamination Certificate

active

07829832

ABSTRACT:
Methods for operating a pixel cell include efficient transferring of photo-charges using multiple pulses to a transistor transfer gate during a charge integration period for an associated photosensor. The pixel cell can be operated with efficient transfer characteristics in either normal or high dynamic range (HDR) mode. The high dynamic range can be realized by either operating an optional HDR transistor or by fluctuating the voltage applied to a reset gate.

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Written Opinion of the International Searching Authority, Mar. 13, 2008. (PCT/US2006/033505).
Taiwan (ROC) Office Action, Sep. 23, 2009.

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