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Patent US3676847A successfully refreshed from Google Patents.
US3676847A
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Character recognition system with simultaneous quantization at a plurality of levels
Assignee: Scan Data Corp
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Filing: 1970-06-15
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Granted: 1972-07-11
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Expires: 1990-06-15
Abstract
Abstract A character recognition system is provided which includes a plurality of quantizers for generating a binary quantization signal at a plurality of levels of a character pattern sampled within a field on a document. The character recognition system also includes means for sampling the character pattern at each of the plurality of levels of quantization substantially concurrently.
Inventors
- 👤 Melvin E Partin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:00
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/20; G06V30/00; G06V30/10; G06V30/14; G06V30/146; G06V30/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
180 words
In a character recognition system including a serial storage means having a plurality of stages for serially storing and shifting a signal representative of a binary quantization at a plurality of darkness levels of a character pattern sampled within a field on a document, means for recognizing a character in said storage means, said means for recognizing being connected to a plurality of said stages of said storage means via gating means, encoding means for converting a plurality of binary quantizations into a coded signal representative of said plurality of binary quantizations and said gating means include decoding means for converting said coded signal into each of said plurality of binary quantizations, and control means connected to said gating means for sequentially providing to said means for recognizing said binary quantization at each of said plurality of levels so that all of said levels of binary quantization are provided to said means for recognizing prior to the shifting of said binary quantization to the next succeeding stages of said storage means as said binary quantization passes through said storage means.
Claim 2
Dependent Claim
180 words
In a character recognition system including a serial storage means having a plurality of stages for serially storing and shifting a signal representative of a binary quantization at a plurality of darkness levels of a character pattern sampled within a field on a document, means for recognizing a character in said storage means, said means for recognizing being connected to a plurality of said stages of said storage means via gating means, encoding means for converting a plurality of binary quantizations into a coded signal representative of said plurality of binary quantizations and said gating means include decoding means for converting said coded signal into each of said plurality of binary quantizations, and control means connected to said gating means for sequentially providing to said means for recognizing said binary quantization at each of said plurality of levels so that all of said levels of binary quantization are provided to said means for recognizing prior to the shifting of said binary quantization to the next succeeding stages of said storage means as said binary quantization passes through said storage means.
Claim 3
Dependent Claim
60 words
The character recognition system of claim 1 wherein said decoding means is selectively actuable by control signals to convert said coded signal to any one of said plurality of binary quantizations at a time, said control means providing control signals to said decoding means to cause sequential conversion of said coded signals to each of said plurality of binary quantizations.
Claim 4
Dependent Claim
42 words
The character recognition system of claim 2 wherein said means for recognizing include feature recognition means, said feature recognition means receiving each of said plurality of quantizations so that a feature mAy be recognized in any of said plurality of quantization levels.
Claim 5
Dependent Claim
50 words
The character recognition system of claim 3 wherein said feature extraction means includes storage means to enable storage of the recognition of each feature detected in said plurality of quantization levels so that a character can be recognized by the combination of features detected at a plurality of quantization levels.
Claim 6
Dependent Claim
181 words
In a character recognition system including a serial storage means having a plurality of stages for serially storing and shifting a signal representative of a binary quantization at a plurality of darkness levels of a character pattern sampled within a field on a document, means for recognizing a character in said storage means, said means for recognizing being connected to a plurality of said stages of said storage means via gating means, control means connected to said gating means for providing to said means for recognizing said signals representative of a binary quantization at a plurality of darkness levels, said control means including means for providing from said signal representative of a binary quantization at a plurality of darkness levels, a binary quantization of each darkness level of said plurality of levels in sequence so that each darkness level represented by said signal in said storage means is provided individually and sequentially to said means for recognizing at each location of said signal in said storage means before the signal is shifted serially to the next location in said storage means.
Claim 7
Dependent Claim
181 words
In a character recognition system including a serial storage means having a plurality of stages for serially storing and shifting a signal representative of a binary quantization at a plurality of darkness levels of a character pattern sampled within a field on a document, means for recognizing a character in said storage means, said means for recognizing being connected to a plurality of said stages of said storage means via gating means, control means connected to said gating means for providing to said means for recognizing said signals representative of a binary quantization at a plurality of darkness levels, said control means including means for providing from said signal representative of a binary quantization at a plurality of darkness levels, a binary quantization of each darkness level of said plurality of levels in sequence so that each darkness level represented by said signal in said storage means is provided individually and sequentially to said means for recognizing at each location of said signal in said storage means before the signal is shifted serially to the next location in said storage means.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |