US3887792A
Expired / Lapsed
US
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Method and device for reading and decoding a delta-distance code
Assignee: SCOPE ACQUISITION CORP A DE CORP
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Filing: 1973-12-04
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Granted: 1975-06-03
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Expires: 1993-12-04
Abstract
Abstract A delta-distance code is scanned to determine the deployment of transitions at zone edges. Selected transitions define the boundaries of zones whose respective time intervals created by the scanning process are measured logarithmically. Data contained in zonal ratios is categorized by the difference between the logarithms of those zones. The categories thus derived define the encoded data.
Inventors
- 👤 Richard E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:27
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/01; G06K7/016; G06K7/0166
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
90 words
A method for decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detachable transitions and in which a ratio of dimensions comprises coded data, comprising the steps of: logarithmically measuring a dimension between a first pair of transitions; logarithmically measuring a dimension between a second pair of transitions of which at least one member is not included in said first pair; categorizing the difference between the measurements whereby the categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 2
Independent Claim
90 words
A method for decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detachable transitions and in which a ratio of dimensions comprises coded data, comprising the steps of: logarithmically measuring a dimension between a first pair of transitions; logarithmically measuring a dimension between a second pair of transitions of which at least one member is not included in said first pair; categorizing the difference between the measurements whereby the categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 3
Dependent Claim
21 words
The method set forth in claim 1 in which said transitions comprise boundaries between bars and areas of detectably different characteristics.
Claim 4
Dependent Claim
17 words
The method set forth in claim 1 in which said zonal dimensions comprise distances between bar edges.
Claim 5
Dependent Claim
17 words
The method set forth in claim 1 in which said zonal dimensions comprise intervals between detectable transitions.
Claim 6
Independent Claim
101 words
A method for decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detectable transitions and in which a ratio of dimensions comprises coded data, comprising the steps of: logarithmically measuring in sequence a first dimension between a first pair of transitions; logarithmically measuring in sequence a second dimension between a second pair of transitions of which at least one member is not included in said first pair; categorizing the difference between the measurements, in the sequence measured, whereby the sequential categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 7
Independent Claim
101 words
A method for decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detectable transitions and in which a ratio of dimensions comprises coded data, comprising the steps of: logarithmically measuring in sequence a first dimension between a first pair of transitions; logarithmically measuring in sequence a second dimension between a second pair of transitions of which at least one member is not included in said first pair; categorizing the difference between the measurements, in the sequence measured, whereby the sequential categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 8
Dependent Claim
21 words
The method set forth in claim 4 in which said transitions comprise boundaries between bars and areas of detectably different characteristics.
Claim 9
Dependent Claim
17 words
The method set forth in claim 4 in which said zonal dimensions comprise measurements between bar edges.
Claim 10
Dependent Claim
17 words
The method set forth in claim 4 in which said zonal dimensions comprise intervals between detectable transitions.
Claim 11
Independent Claim
149 words
A device for scanning and decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detectable transitions and in which a ratio of dimensions comprises coded data, comprising: first means for scanning the representation and generating electrical signals which are an analog of the representation; second means responsive to said first means for generating a plurality of signals substantialy coincident in time with the scan of said detectable transitions; third means reponsive to said second means for generating and storing a plurality of signals respectively indicative of the logarithms of the times required to scan the representation between said detectable transitions; fourth means responsive to said third means for generating a unique signal corresponding to a categorization of a difference between predetermined members of said stored signals whereby the categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 12
Independent Claim
149 words
A device for scanning and decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detectable transitions and in which a ratio of dimensions comprises coded data, comprising: first means for scanning the representation and generating electrical signals which are an analog of the representation; second means responsive to said first means for generating a plurality of signals substantialy coincident in time with the scan of said detectable transitions; third means reponsive to said second means for generating and storing a plurality of signals respectively indicative of the logarithms of the times required to scan the representation between said detectable transitions; fourth means responsive to said third means for generating a unique signal corresponding to a categorization of a difference between predetermined members of said stored signals whereby the categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 13
Independent Claim
149 words
A device for scanning and decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detectable transitions and in which a ratio of dimensions comprises coded data, comprising: first means for scanning the representation and generating electrical signals which are an analog of the representation; second means responsive to said first means for generating a plurality of signals substantialy coincident in time with the scan of said detectable transitions; third means reponsive to said second means for generating and storing a plurality of signals respectively indicative of the logarithms of the times required to scan the representation between said detectable transitions; fourth means responsive to said third means for generating a unique signal corresponding to a categorization of a difference between predetermined members of said stored signals whereby the categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 14
Independent Claim
149 words
A device for scanning and decoding a multiple zone coded representation which includes two or more zonal dimensions bounded by three or more detectable transitions and in which a ratio of dimensions comprises coded data, comprising: first means for scanning the representation and generating electrical signals which are an analog of the representation; second means responsive to said first means for generating a plurality of signals substantialy coincident in time with the scan of said detectable transitions; third means reponsive to said second means for generating and storing a plurality of signals respectively indicative of the logarithms of the times required to scan the representation between said detectable transitions; fourth means responsive to said third means for generating a unique signal corresponding to a categorization of a difference between predetermined members of said stored signals whereby the categorization defines a zone coded representation in terms of a dimensional ratio.
Claim 15
Dependent Claim
25 words
A device as set forth in claim 9 in which said second means includes means for selecting a detectable transition to satisfy a predetermined criterion.
Claim 16
Dependent Claim
17 words
A devIce as set forth in claim 9 in which said predetermined members are of predetermined sequence.
Claim 17
Dependent Claim
33 words
A device as set forth in claim 9 in which said fourth means includes means reponsive to the sign of said difference and means responsive to said sign to gate said unique signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |