Fixed-pattern-noise reduction in active pixel image sensors

Details Fixed-pattern-noise reduction in active pixel image sensors Fixed-pattern-noise reduction in active pixel image sensors

1998-05-14

2000-03-21

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

257212, 348294, H01J 4014

Patent

active

060405694

ABSTRACT:
A device for sensing light includes: an active pixel sensor 20; a holding capacitor 67 for storing a pixel signal from the active pixel sensor 20; a scanning switch 71 coupled between the holding capacitor 67 and a sense line 80; a switch control line 76 for turning the switch 71 on and off; a logic gate 90 having a horizontal scan shift register input and a strobe input, the switch control line 76 is an output of the logic gate 90.

REFERENCES:
patent: 4901129 (1990-02-01), Hynecek
patent: 5317174 (1994-05-01), Hynecek
patent: 5781312 (1998-07-01), Noda
patent: 5825056 (1998-10-01), Yonemoto

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