Importance

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Abstract

An image processing apparatus especially suitable for image processing operations such as enlarging, reducing, rotating and scrolling avoids use of a second video memory. The image processing device comprises a memory having memory elements for storing picture element data of a video information which describes an original image, an operation circuit for receiving a start address where a read operation is to start within the memory and a predetermined data indicative of a difference between the start address and a next address where the read operation is to be made, and for calculating the next address from the start address data and the predetermined data, a reading circuit for reading the picture element data which is stored in the memory at the next address calculated by the operation circuit, and an output circuit for outputting the picture element data read by the reading circuit. The picture element data output from the output circuit describe at least a portion of the original image subjected to a predetermined image processing operation.

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First Claim