Patent ID: 7321438

Claim:
An image processing apparatus connected to at least an external controller via an external bus, comprising: first image processing means for processing input image data and for generating first and second image data from the input image data; image storage means for storing the first and second image data processed by said first image processing means; second image processing means for processing the first and second image data read from said image storage means; output control means for outputting image data processed by said second image processing means via the external bus; preservation means for preserving a status of the result of processing on the first image data by said second processing means; and pseudo master means for controlling a preservation operation by said preservation means, in correspondence with output completion of the first image data by said output control means, wherein said first image processing means generates the second image data while said output control means outputs the first image data processed by said second image processing means, and said second image processing means starts processing the second image data, in correspondence with output completion of the first image data by said output control means.