Method and apparatus for unwinding image data

Details Method and apparatus for unwinding image data Method and apparatus for unwinding image data

1992-06-10

1996-04-23

Powell, Mark R.

395115, H04N 701

Patent

active

055111513

ABSTRACT:
Method and apparatus for converting image data from row format into column format and a printer incorporating the same. A conversion circuit, which is responsive to writes to a first address space, is provided for converting the image data from the row format into the column format. A CPU writes the row format image data to the first address space whereupon the conversion circuit converts it to the second format. The CPU then writes image data to a second address space. In accordance with an unwind flag set by the CPU, either the converted image data or the original image data is stored in a memory. After the data has been written to memory, the CPU initiates a DMA transfer of the image data to a printer engine.

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