System for improving storage efficiency of digital files
First Claim
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1. A method of compressing a digital image having a plurality of pixels, each of said plurality of pixels represented by a sequence including three ordered symbols, said method comprising:
- (a) organizing a plurality of said symbols into a first bit plane, each said symbol in said first bit plane occupying the same position in a respective sequence of ordered symbols for a pixel, wherein said first bit plane represents the most significant bit;
(b) organizing a plurality of said symbols into a second bit plane, each said symbol in said second bit plane occupying the same position in a respective sequence of ordered symbols for a pixel;
(c) organizing a plurality of said symbols into a third bit plane, each said symbol in said third bit plane occupying the same position in a respective sequence of ordered symbols for a pixel;
(d) compressing said image by compressing said first bit plane;
(e) compressing said image by compressing said second and third bit planes together as a group, wherein said first bit plane is compressed separate from the combination of said second and third bit planes, wherein said compressed first bit plane has a lower degree of loss than said compressed second and third bit planes.
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Abstract
Data is partitioned and processed along a bit plane that includes symbols holding a particular place in the ordered symbol sequences of digital information to achieve efficient compression and reduce processing complexity.
49 Citations
5 Claims
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1. A method of compressing a digital image having a plurality of pixels, each of said plurality of pixels represented by a sequence including three ordered symbols, said method comprising:
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(a) organizing a plurality of said symbols into a first bit plane, each said symbol in said first bit plane occupying the same position in a respective sequence of ordered symbols for a pixel, wherein said first bit plane represents the most significant bit; (b) organizing a plurality of said symbols into a second bit plane, each said symbol in said second bit plane occupying the same position in a respective sequence of ordered symbols for a pixel; (c) organizing a plurality of said symbols into a third bit plane, each said symbol in said third bit plane occupying the same position in a respective sequence of ordered symbols for a pixel; (d) compressing said image by compressing said first bit plane; (e) compressing said image by compressing said second and third bit planes together as a group, wherein said first bit plane is compressed separate from the combination of said second and third bit planes, wherein said compressed first bit plane has a lower degree of loss than said compressed second and third bit planes. - View Dependent Claims (2, 3, 4, 5)
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Specification
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Current AssigneeSharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
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Original AssigneeSharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
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InventorsNguyen, Uoc H., Levin, Burton L., Gaebel, Gary L.
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Primary Examiner(s)JEAN PIERRE, PEGUY
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Application NumberUS09/885,320Publication NumberTime in Patent Office2,037 DaysField of Search341/87, 341/51, 341/56, 341/67, 341/59, 341/63, 341/65, 341/50, 341/107, 382/239US Class Current341/50CPC Class CodesH03M 7/30 Compression speech analysis...
