Patent ID: 8849067

Claim:
An image processing apparatus comprising: a reading unit configured to read image data, which is obtained by scanning and accumulated in a memory, from the memory line by line; a magnification change processing unit configured to perform a magnification change process on the image data read by the reading unit and output the image data subjected to the magnification change process; a wait time acquiring unit configured to acquire wait time information on a value corresponding to a wait time from when a synchronous signal, representing a start of read of the image data for each line, falls to when the magnification change process starts; a signal output unit configured to output, to the reading unit, a permission signal indicating whether read of image data of a next line is permitted or denied based on the wait time information while the magnification change processing unit is outputting the image data, and a delay time acquiring unit configured to acquire delay time information on a value corresponding to a delay time from when the image data is input into the magnification change processing unit to when output of the image data subjected to the magnification change process starts, wherein the signal output unit outputs the permission signal based on the wait time information and the delay time information, to the reading unit while the magnification change processing unit outputs the image data.