Patent US 5,812,907

An image processing apparatus includes a first processor for outputting first image data and a second processor for outputting second image data different from the first image data. The apparatus also includes a first detector for detecting a processing stage of the first processor and a second detector for detecting a processing condition of the second processing means. The apparatus also includes means for judging whether operations, to interrupt the processing by the first processor and to execute the processing by the second processor, are permitted or inhibited on the basis of a first detection result of the first detector and a second detection result of the second detector.