Fixed-pattern-noise reduction in active pixel image sensors

摘要

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.