SNR Denton US LLP
Solid-state imaging device and apparatus with an increased speed of analog to digital conversion
A solid-state imaging device includes a reference-signal generating unit that generates plural kinds of reference signals for converting an analog pixel signal into digital data, a reference-signal selecting unit that selects any one of the plural kinds of reference signals, a comparing unit that compares the pixel signal and the selected reference signal, and a count unit that performs count processing in parallel with comparison processing in the comparing unit and stores a count value at a point when the comparison processing is completed. The count unit decides digital data of the pixel signal in a 1 LSB step by storing a count value at a point when the comparison processing is completed for any one of the plural kinds of reference signals and correcting the stored count value on the basis of results of the comparison processing for respective remaining reference signals of the plural kinds of reference signals.
Sony Corporation
H H
H04N H04N
inventional inventional
Tomonori Naofumi
Mori Sakai