US3824546A
Expired / Lapsed
US
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Pattern recognizing systems
Assignee: APAHI KOGAKU KOGYO KK
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Filing: 1973-01-14
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Granted: 1974-07-16
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Expires: 1993-01-14
Abstract
Abstract A system for recognizing and identifying patterns in the form of letters, numerals, and the like. An image-forming structure is provided for forming an image of a pattern, which is to be recognized, in each of a pair of image planes. This image-forming means has an optical axis, and a positioning structure is operatively connected with a pattern carrier for moving the latter across the latter optical axis in order to locate patterns, which are carried by the pattern carrier and which are to be recognized, sequentially at a read position extending across the optical axis. A pair of photosensitive units are respectively situated in the regions of the above image planes for responding to an image at the latter planes and for respectively detecting characteristics of the image in a pair of mutually perpendicular directions and then converting these characteristics into a pair of corresponding electrical signals which are respectively indicative of characteristics of a pattern along a pair of mutually perpendicular coordinates. A quantizing assembly is electrically connected with the pair of photosensitive units for quantizing the latter electrical signals into binary codes capable OF identifying the pattern.
Inventors
- 👤 H Kawasaki
- 👤 T Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:39
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/20; G06V10/28; G06V10/40; G06V10/88
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
180 words
In a pattern recognizing system, image-forming means for forming an image of a pattern which is to be recognized, in each of a pair of image planes, said image-forming means including cylindrical lenses for respectively forming X-compression and Ycompression images in said image planes, said image-forming means having an optical axis, positioning means operatively connected with a pattern carrier for moving the latter across said optical axis for locating patterns, which are carried by said pattern carrier and which are to be recognized, sequentially at a read position extending across the optical axis, a pair of photosensitive means respectively situated in the regions of said planes for responding to an image at said planes and for respectively detecting characteristics of the image in a pair of mutually perpendicular directions and converting said characteristics into a pair of corresponding electrical signals which are respectively indicative of characteristics of the pattern along a pair of mutually perpendicular coordinates, and quantizing means electrically connected with said pair of photosensitive means for quantizing said electrical signals into binary codes capable of identifying the pattern.
Claim 2
Dependent Claim
180 words
In a pattern recognizing system, image-forming means for forming an image of a pattern which is to be recognized, in each of a pair of image planes, said image-forming means including cylindrical lenses for respectively forming X-compression and Ycompression images in said image planes, said image-forming means having an optical axis, positioning means operatively connected with a pattern carrier for moving the latter across said optical axis for locating patterns, which are carried by said pattern carrier and which are to be recognized, sequentially at a read position extending across the optical axis, a pair of photosensitive means respectively situated in the regions of said planes for responding to an image at said planes and for respectively detecting characteristics of the image in a pair of mutually perpendicular directions and converting said characteristics into a pair of corresponding electrical signals which are respectively indicative of characteristics of the pattern along a pair of mutually perpendicular coordinates, and quantizing means electrically connected with said pair of photosensitive means for quantizing said electrical signals into binary codes capable of identifying the pattern.
Claim 3
Dependent Claim
73 words
The combination of claim 1 and wherein a light measuring means is optically arranged with respect to said image-forming means for responding to the quantity of light associated with a pattern at said read position for providing an electrical signal corresponding to said quantity of light, said quantizing means also being electrically connected with said light-measuring means for providing additional binary code information for further identification of a pattern at said read position.
Claim 4
Dependent Claim
85 words
The combination of claim 1 wherein said positioning means moves said pattern carrier across the optical axis in a direction which is the same as one of said mutually perpendicular directions in which image characteristics are detected by one of said photosensitive means, said one photosensitive means detecting when a pattern is at said read position and being operatively connected with the other of said photosensitive means for initiating operation of the other of said photosensitive means when a pattern is at the read position.
Claim 5
Dependent Claim
36 words
The combination of claim 1 and wherein said pair of photosensitive means each includes an array of photoelectric elements arranged in a row, and said rows of photoelectric elements respectively extending in said mutually perpendicular directions.
Claim 6
Dependent Claim
87 words
The combination of claim 1 and wherein said pair of photosensitive means include a pair of scanning elements respectively formed with scanning openings, one of said elements being stationary and scanning an image at the image plane in the region of said one scanning element in response to movement of the pattern carrier in a given direction by said positioning means, and moving means operatively connected to the other of said scanning elements for moving the latter in a direction which is perpendicular to said given direction.
Claim 7
Dependent Claim
72 words
The combination of claim 5 and wherein said pair of photosensitive means respectively further include photoelectric elements situated behind said scanning elements for responding to light passing through said scanning openings, respectively, said photoelectric element which is situated behind said stationary scanning element detecting when a pattern reaches the read position and being electrically connected with said moving means for setting the latter into operation when a pattern reaches the read position.
Claim 8
Dependent Claim
64 words
The combination of claim 4 and wherein one of said arrays of photoelectric elements extends in the same direction as that in which the pattern carrier is moved by said positioning means and includes at one end of said array a position-detecting photoelectric element which detects when a pattern reaches the read position and which then initiates operation of said arrays of photoelectric elements.
Claim 9
Dependent Claim
32 words
The combination of claim 1 and wherein said image-forming means coacts with positive patterns on a negative background of said carrier for providing images of a pattern respectively at said image planes.
Claim 10
Dependent Claim
26 words
The combination of claim 1 and wherein said image-forming means coacts with negative patterns on a positive background for forming said image at said image planes.
Claim 11
Dependent Claim
36 words
The combination of claim 1 and wherein said pair of photosensitive means respectively operate simultaneously for simultaneously achieving said electrical signals corresponding to the characteristics of a pattern image in a pair of mutually perpendicular directions.
Claim 12
Dependent Claim
38 words
The combination of claim 4 and wherein reference voltage supply means cooperates with said pair of photosensitive means for supplying a plurality of reference voltage levels thereto to achieve said signals by comparison with said reference voltage levels.
Claim 13
Dependent Claim
34 words
The combination of claim 5 and wherein said moving means is actuated by the photoelectric element coacting with said stationary scanning element to carry out a single harmonic sinusoidal cycle in said perpendicular direction.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |