Patent ID: 7009648
Filing Date: 2006-03-07
Classification: H01L,H04N

Abstract:
1. A method for operating a CMOS image sensor including a matrix of pixels arranged in a plurality of lines and columns, each of said pixels including a photosensor element accumulating charge carriers in proportion to the illumination thereof, at least a MOS transistor and storage means able to be coupled to said photosensor element by means of the MOS transistor at a determined instant in order to generate a sampled signal representative of said charge carriers accumulated by said photosensor, said storage means being intended to assure storage for the purpose of reading said sampled signal, wherein, said method includes: and wherein during said fourth phase, said photosensor element is held at a voltage such that any charge carrier generated by said photosensor element is drained and thus does not disturb said sampled signal stored on said storage means, and wherein: