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Abstract

A method and integrated circuit for manipulating two dimensional images. The method and integrated circuit use an on-chip memory buffer comprising four memory elements, and accessed as a rectangle of 4 times an integer number of bytes by a number of lines depending on the image resolution.Each block of the source image is copied from the DRAM into the on-chip memory buffer, and a destination block is determined within the destination image. The destination block is populated by determining the addresses within the on-chip memory buffer comprising the pixels to be copied to the relevant location in the destination block, reading the data from the on-chip memory buffer, and writing it to the destination block. In some embodiments the data may be multiplexed, or bytes may be re-ordered within the read data prior to writing.

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First Claim