Patent ID: 8526023

Claim:
An image processing apparatus including a first image processing that operates at a first clock signal having a first frequency and a second image processing unit that operates at a second clock signal having a second frequency which is higher than the first frequency, the apparatus comprising: a control unit that, in a case that image data is supplied from the first image processing unit, to the second image processing unit, performs control so that the second clock signal is supplied to the second image processing unit if intra-line image data of the image data is being transmitted and pixel data to be processed in the image data exists, no clock signal is supplied to the second image processing unit if the intra-line image data of the image data is being transmitted and no pixel data to be processed in the image data exists, and the second clock signal is supplied to the second image processing unit if the intra-line image data of the image data is not being transmitted, irrespective of whether or not the pixel data to be processed in the image data exists.