Patent ID: 6999122
Filing Date: 2006-02-14
Classification: H04N

Abstract:
1. An image-sensing apparatus comprising: a plurality of pixels, the pixels each including: a controller that makes the individual pixels perform image sensing in such a way that the electric signal output from the photodiode is converted natural-logarithmically by feeding a first voltage to the second electrode of the first MOS transistor so as to make the first MOS transistor operate in a subthreshold region below a threshold value thereof, wherein the controller resets the individual pixels by, in each pixel, feeding a second voltage to the second electrode of the first MOS transistor so as to permit a larger current to flow through the first MOS transistor than before feeding the second voltage thereto, and a capacitor having one end connected to the second electrode of the second MOS transistor, the capacitor being reset through the second MOS transistor when a reset voltage is fed to the first electrode of the second MOS transistor.