US3996557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Character recognition system and method
Assignee: MI2 CORP
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Filing: 1975-01-14
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Granted: 1976-12-07
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Expires: 1995-01-14
Abstract
Abstract Apparatus and method for the recognition of hand written alphanumeric characters as they are being formed. The different sequence of strokes for each letter of the alphabet and numbers, as it is written, is codified. The apparatus comprises a minimum number of parallel conductive bars which produce a characteristic signal when crossed or touched with the pen as the alphanumeric character is being formed to reproduce the identifying code. A computer having the distinctive alphanumeric character code stored therein compares the signals derived by contact of the pen with the conductive bars and renders an appropriate readout for utilization. The invention encompasses script writing and word identification as well as the conventional printing of the individual letters.
Inventors
- 👤 Alvin V. Donahey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/10; G06V10/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
121 words
An alphanumeric character recognition system for analyzing symbols each written in a sequence of strokes comprising: means for defining a writing area, means to separate said writing area into a minimum number of elongated side-by-side parallel contact areas, means for storing for predetermined symbols said sequence of strokes as to the respective side-by-side areas contacted, writing means for writing symbols in said writing area, said writing means connected to said storing means to feed thereto said sequence of strokes contacting said side-by-side parallel areas when a symbol is being written, comparison means for comparing said stored sequence of strokes of said predetermined symbols with said written sequence of strokes, and utilization means having the output of said comparison means connected thereto.
Claim 2
Dependent Claim
121 words
An alphanumeric character recognition system for analyzing symbols each written in a sequence of strokes comprising: means for defining a writing area, means to separate said writing area into a minimum number of elongated side-by-side parallel contact areas, means for storing for predetermined symbols said sequence of strokes as to the respective side-by-side areas contacted, writing means for writing symbols in said writing area, said writing means connected to said storing means to feed thereto said sequence of strokes contacting said side-by-side parallel areas when a symbol is being written, comparison means for comparing said stored sequence of strokes of said predetermined symbols with said written sequence of strokes, and utilization means having the output of said comparison means connected thereto.
Claim 3
Dependent Claim
18 words
The system of claim 1 wherein said number of contact areas are parallel vertically elongated side-by-side rectangular areas.
Claim 4
Dependent Claim
18 words
The system of claim 1 wherein said number of contact areas are parallel horizontally elongated side-by-side rectangular areas.
Claim 5
Dependent Claim
33 words
The system of claim 1 wherein said symbols are in the nature of script and wherein there is an additional rectangular area above and an additional rectangular area below said horizontal parallel areas.
Claim 6
Dependent Claim
39 words
The system of claim 1 wherein said sequence of strokes further comprises an indication of discontinuous strokes, and wherein said discontinuities are stored in said storing means as they occur, relative to said sequence of strokes for predetermined symbols.
Claim 7
Dependent Claim
14 words
The system of claim 1 wherein said vertical rectangular areas are three in number.
Claim 8
Dependent Claim
14 words
The system of claim 1 wherein said horizontal rectangular areas are three in number.
Claim 9
Dependent Claim
24 words
The system of claim 1 wherein said elongated side-by-side parallel writing areas further comprise superimposed horizontal rectangular writing areas and vertical rectangular writing areas.
Claim 10
Dependent Claim
23 words
The system of claim 8 wherein said vertical writing area comprises three rectangular areas and said horizontal writing area comprises five rectangular areas.
Claim 11
Dependent Claim
15 words
The system of claim 1 wherein said elongated side-by-side parallel contact areas are operative together.
Claim 12
Dependent Claim
19 words
The system of claim 1 wherein said elongated side-by-side parallel contact areas are switched from one to the other.
Claim 13
Dependent Claim
13 words
The system of claim 1 wherein said utilization means includes a print out.
Claim 14
Dependent Claim
19 words
The system of claim 1 wherein said comparison means includes an indicator to indicate that symbol in said area.
Claim 15
Dependent Claim
12 words
The system of claim 13 wherein said indicator is a visual indicator.
Claim 16
Dependent Claim
13 words
The system of claim 13 wherein said indicator is a visual character display.
Claim 17
Dependent Claim
21 words
The system of claim 13 wherein said writing area further comprises an erase in the event of an incorrect entry display.
Claim 18
Dependent Claim
18 words
The system of claim 1 wherein said writing area comprises a series of writing areas each distinctively separated.
Claim 19
Dependent Claim
17 words
The system of claim 17 wherein said series of writing areas are divided in a predetermined manner.
Claim 20
Dependent Claim
21 words
The system of claim 1 wherein said stored sequence of strokes for said predetermined symbols further includes grouping the stored information.
Claim 21
Dependent Claim
64 words
The system of claim 1 wherein said adjacent areas are electrically conductive bars; said writing means is an electrical pen; said storing means is operative to store said sequence of strokes as distinctive electrical signals; said comparison means is operative to compare said stored signals with the electrical signals from said writing pen; and said utilization means is operative to utilize the recognized symbols.
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) | 1979-12-07 | 1980-06-07 | 1980-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-07 | 1984-06-07 | 1984-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-07 | 1988-06-07 | 1988-12-07 | $7700.00 | Window Closed / Lapsed |