Unisys Corporation

Robert D'Aoust

David C Williams

George E Reasoner, Jr

Debora Y Grosse

Robert D Klein

Joseph M Capo

Stephen R Krebs

Ravi K Nigam

Kevin F Jennings

Gerald R Smith

Robert B Cording

Deborah Y Grosse

A pipelined image processor generates an image of the information contained on first and second portions of a document. The pipelined image processor includes a first pipe for processing information contained on the first portion of the document, and second pipe for processing information contained on the second portion of the document. The pipes receive the output from two camera assemblies which are used for generating an electrical signal in response to information contained on the document, an image digitizer for generating digitized information from the electrical signal by the means for generating an electrical signal. In addition, both pipes also include a resequencer for generating resequenced information from the digitized information, as well as an image processor for generating processed information from the resequenced information. Finally, the first and second pipes include a transposer/compressor assembly for generating transposed and compressed information from the processed information, and a compressed data buffer for storing the transposed and compressed information.

Parallel pipelined image processor

An image data processor including various subprocessors arranged in a pipeline for carrying out functions such as pixel normalization, background suppression, spot and void removal, image scaling, and size detection.

Image data processor

A method and apparatus for the transposition of obtained video image data. This video image data originally comprises a plurality of columns, containing a plurality of pixels therein. Each of these columns uniquely corresponds to a vertical segment of the document being scanned. These vertical columns of data are then placed into an external memory and outputted therefrom, by a transposer controller, which causes the output to comprise pixel data contained in the rows of the original vertical columns input thereto.

Method and apparatus for transposing image data

Apparatus for detecting a dimension of a generally rectangular document in a system where the document is carried over a track to a station where the document is scanned by a sensor to create a digital image thereof. Pixel vales along a scan line which includes a portion of the track as well as the document are analyzed and provide an indication of the size of the document.

Method and apparatus for detecting document size in an imaging system

A pipelined image processor is disclosed which contains a diagnostic apparatus which, under normal processing conditions, is coupled to and is in communication with resequencer, image processor, and transposer/compressor assemblies contained within the pipelined image processor. The diagnostic apparatus of this invention causes a diagnostic test pattern to be sent to the re-sequencer and image processor entities of the pipelined image processor and monitors the response thereof. This response is then used to detect faults which have occurred in these entities.

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Detroit, MI, United States of America

Robert D'Aoust