Active pixel sensor and imaging system having differential mode

Details Active pixel sensor and imaging system having differential mode Active pixel sensor and imaging system having differential mode

1994-10-14

1997-05-20

Garber, Wendy

Television

Camera, system and detail

Solid-state image sensor

348294, 257291, 257292, 2502081, H04N 5335

Patent

active

056317042

ABSTRACT:
An active pixel imaging system and method to generate an differential output signal consisting of the differences in a viewed image between adjacent detected flames. A buffered electrical charge storage capacity of the active pixel sensor is utilized to provide a system with reduced complexity and hardware requirements. In the imaging system, when a particular active pixel sensor is activated it generates a voltage signal corresponding to a previous frame's detect light intensity before the pixel is reset to generate a voltage signal corresponding to a present frame's detected light intensity. A differential output circuit is used to generate a differential output signal based on these two generated voltage signals.

REFERENCES:
patent: 5153420 (1992-10-01), Hack et al.
patent: 5355165 (1994-10-01), Kosonocky et al.
patent: 5471515 (1995-11-01), Fossum et al.

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