Compression/decompression algorithm for image documents having text, graphical and color content

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6246791
SERIAL NO

09399005

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Abstract

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A computer program product for compressing data files representative of an image document. The document includes color information and/or graphical information. The product is on a computer readable medium and includes instructions for causing a computer to provide a first image file at a first resolution and a second image file at a second resolution of said document with said second resolution being lower than said first resolution. The product causes a computer to process the first image file to convert the first image file into a text file representation of the document and compress the text file representation of the document to provide a first compressed file. The computer processes the second file to extract information corresponding to color information and graphics information. It compresses the second file using a second, different compression technique to provide a second compressed file corresponding to the image and the color information from the low resolution image file. The product causes a computer to store said first and second compressed files to provide a composite file corresponding to the compressed file of the document.

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Patent Owner(s)

Patent OwnerAddress
KURZWEIL EDUCATIONAL SYSTEMS INC17855 DALLAS PARKWAY #400 DALLAS TX 75287

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dionne, Mark S Newton, MA 11 241
Kurzweil, Raymond C Newton, MA 107 4221
MacKenzie, Kenneth M Arlington, MA 5 202

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