US5453605A
Expired / Lapsed
US
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Global addressability for self-clocking glyph codes
Assignee: Xerox Corp
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Filing: 1993-12-22
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Granted: 1995-09-26
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Expires: 2013-12-22
Abstract
Abstract An optically readable record for storing encoded information comprises (1) a recording medium, (2) a self-clocking data code for encoding the information, with this data code being composed of glyphs that are written in a bounded two dimensional code field on the recording medium on centers that are spatially distributed in nominal accordance with a predetermined spatial formatting rule, and the glyphs being defined by respective symbols that are selected from a finite set of optically discriminable symbols to encode the information, and (3) a self-clocking address pattern written on the recording medium to extend across the code field along at least one axis, with this address pattern being composed of a unique glyph pattern that disambiguates spatial position within the address pattern to a subpattern precision.
Inventors
- 👤 David L. Hecht
- 👤 Glen W. Petrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:09
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/14; G06K7/1404; G06K7/1408; G06K7/143; G06K19/00; G06K19/06; G06K19/06009; G06K19/06037
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
An optically readable record for storing encoded information; said record comprising a recording medium; a self-clocking data code for encoding said information; said data code being composed of glyphs that are written in a bounded two dimensional code field on said recording medium on centers that are spatially distributed in nominal accordance with a predetermined spatial formatting rule; said glyphs being defined by respective symbols that are selected from a finite set of optically discriminable symbols to encode said information; and a self-clocking address pattern written on said recording medium to extend accross said code field along at least one axis; said address pattern being composed of a glyph pattern that disambiguates logical position within said address pattern to a subpattern precision.
Claim 2
Dependent Claim
122 words
An optically readable record for storing encoded information; said record comprising a recording medium; a self-clocking data code for encoding said information; said data code being composed of glyphs that are written in a bounded two dimensional code field on said recording medium on centers that are spatially distributed in nominal accordance with a predetermined spatial formatting rule; said glyphs being defined by respective symbols that are selected from a finite set of optically discriminable symbols to encode said information; and a self-clocking address pattern written on said recording medium to extend accross said code field along at least one axis; said address pattern being composed of a glyph pattern that disambiguates logical position within said address pattern to a subpattern precision.
Claim 3
Dependent Claim
24 words
The record of claim 1 wherein said glyphs are composed of elongated slash-like symbols that oriented at different angles to encode different digital values.
Claim 4
Dependent Claim
29 words
The record of claim 2 wherein said glyphs are oriented at +45° and -45° with respect to a vertical axis of said recording medium for encoding different binary values.
Claim 5
Dependent Claim
120 words
An optically readable record for storing encoded information; said record comprising a recording medium; a self-clocking data code for encoding said information; said data code being composed of glyphs that are written in a two dimensional code field on said recording medium on centers that are spatially distributed in nominal accordance with a predetermined spatial formatting rule; said glyphs being defined by respective symbols that are selected from a finite set of optically discriminable symbols to encode said information; and a self-clocking address pattern written on said recording medium to extend across said code field longitudinally and transversely; said address pattern being composed of a recognizeable glyph pattern that disambiguates logical position within said address pattern to a subpattern precision.
Claim 6
Dependent Claim
120 words
An optically readable record for storing encoded information; said record comprising a recording medium; a self-clocking data code for encoding said information; said data code being composed of glyphs that are written in a two dimensional code field on said recording medium on centers that are spatially distributed in nominal accordance with a predetermined spatial formatting rule; said glyphs being defined by respective symbols that are selected from a finite set of optically discriminable symbols to encode said information; and a self-clocking address pattern written on said recording medium to extend across said code field longitudinally and transversely; said address pattern being composed of a recognizeable glyph pattern that disambiguates logical position within said address pattern to a subpattern precision.
Claim 7
Dependent Claim
24 words
The record of claim 4 wherein said glyphs are composed of elongated slash-like symbols that oriented at different angles to encode different digital values.
Claim 8
Dependent Claim
29 words
The record of claim 5 wherein said glyphs are oriented at +45° and -45° with respect to a vertical axis of said recording medium for encoding different binary values.
Claim 9
Dependent Claim
24 words
The record of any of claims 1-6 wherein said address pattern disambiquates said logical position by reference to a feature of said code field.
Claim 10
Dependent Claim
17 words
The record of any of claim 7 wherein said feature is a boundary of said code field.
Claim 11
Dependent Claim
24 words
The record of any of claims 1-6 wherein said address pattern disambiquates said logical position by reference to a feature of said address pattern.
Claim 12
Dependent Claim
28 words
The record of any of claims 1-6 wherein said address pattern disambiquates said logical position by reference to digital code values that are encoded by said address pattern.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |