Patent ID: 8576294
Filing Date: 2013-11-05
Classification: H04N

Abstract:
1. A readout apparatus which reads out signals via a plurality of signal lines from an area sensor having pixels arranged to form rows and columns, each pixel having a photoelectric conversion device, comprising: a plurality of amplifiers which are arranged in correspondence with the respective signal lines each arranged in correspondence with respective one of the columns; a plurality of low-pass filters which are arranged in correspondence with respective ones of said plurality of amplifiers; and a conversion unit for serially converting signals that have passed through said low-pass filters and outputting the converted signals, wherein the cut-off frequency of said low-pass filters can be switched in accordance with a time necessary to read out signals from the area sensor to output signals for one row, and wherein, letting τ be a time constant of said low-pass filter, and Trow be the time necessary to read out signals from the area sensor to output signals for one row, a relation 6τ≦Trow is satisfied.