Patent ID: 7671317
Filing Date: 2010-03-02
Classification: H04N

Abstract:
1. A physical quantity detecting apparatus comprising: a sensitive element array in which sensitive elements for detecting physical quantity are arranged in the form of a matrix having columns; a plurality of column AD conversion circuits, each of which is provided corresponding to at least one of the columns of the sensitive elements, for converting a signal output from each of sensitive elements of said at least one of the columns into a digital signal; an output signal bus for transferring the digital signal output from the plurality of column AD conversion circuits; a clock generation circuit for supplying a counter clock signal and a latch clock signal to the plurality of column AD conversion circuits; and a DA converter for outputting a triangle wave, each of the column AD conversion circuits including: the digital signal with amplitude in accordance with an AD converted value expressed through a combination of the counter value held by the column counter and the value held by the one or plural latches being output to the output signal bus.