Importance

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Abstract

A video processor, for transferring a set of image data from an input device to an output device, is provided. The video processor is intended for use in a printing apparatus having a controller for controlling operation of the input and output devices as well as the video processor, while the video processor has an image bus across which the set of image data can be transmitted. The video processor comprises an integrated adaptive compressor for buffering a preselected number of the bytes, the integrated adaptive compressor communicating with the input device. A memory communicates with the integrated adaptive compressor, the memory being capable of selectively storing the preselected number of bytes. The memory also includes predesignated addresses at which the bytes can be stored, and the controller communicates with the memory. The video processor further comprises a direct memory access arrangement, the direct memory access arrangement communicating with the integrated adaptive compressor and the memory. The direct memory access arrangement is adapted to enable transfer of the preselected number of bytes in the integrated adaptive compressor to the predesignated addresses. Preferably, the controller is capable of transmitting data independent of the integrated adaptive compressor so that data can be transferred between the controller and the memory while image data is being accumulated in the integrated adaptive compressor.

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First Claim