Patent ID: 7502492

Claim:
An integrated circuit device comprising: an image change detection circuit that receives image data acquired by imaging means in time series, detects a change in the image data, and generates a change detection signal, the image change detection circuit including: an integration circuit that divides the image into at least one area, integrates pixel values of pixels of the image data of a first image and a second image received in time series, in units of at least one area, and stores a first integrated value of the first image in a first integration register and a second integrated value of the second image in a second integration register; and a change detection signal generation circuit that compares the first integration register and the second integration register to detect the presence or absence of change, and generates a change detection signal when the change detection signal generation circuit determines that a change has occurred, and the integration circuit receiving a horizontal synchronization signal and a vertical synchronization signal, the integration circuit specifying an area of the at least one area to which each pixel belongs based on the horizontal synchronization signal and the vertical synchronization signal, a number of horizontal divisions, and a number of vertical divisions, and the integration circuit integrating the pixel values of the specified area of the at least one area.