US3564267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for optical-electronic identification of a moving body
Assignee: Individual
•
Filing: 1969-04-23
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Granted: 1971-02-16
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Expires: 1989-04-23
Abstract
Abstract An arrangement for the optical-electronic identification of a moving body provided with identification marks, said marks consisting of a plurality of code marks arranged in parallel relationship and being perpendicular to the direction of movement of said body, said code marks being constituted as broad and narrow code marks, the width of the broad code marks being three times that of the narrow code marks and the space on both sides of a narrow code mark being at least twice the width of a narrow code mark. An optical system is provided for producing a scanning spot of light of at least four times the width of a narrow code mark, the optical system projecting the images of the respective illuminated areas of the field of the identification marks onto four adjacent photodetectors controlling two gates via three differential amplifiers responsive to the difference of the scanning signal of the fourth, outer detector with respect to the scanning signals of the remaining three detectors, one of the gates being responsive to a broad mark while the other of the gates is responsive to a narrow mark.
Inventors
- 👤 Arthur Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:46
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10851; B; B07; B07C; B07C5/00; B07C5/34; B07C5/3412; B65; B65G; B65G47/00; B65G47/34; B65G47/46; B65G47/48; B65G47/49; B65G47/493; G06K7/10861
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
179 words
An arrangement for the optical-electronic identification of a moving body provided with identification marks, said marks consisting of a plurality of code marks arranged in parallel relationship and being perpendicular to the direction of movement of said body, said code marks being constituted as broad and narrow code marks, the width of the broad code marks being three times that of the narrow code marks and the space on both sides of a narrow code mark being at least twice the width of a narrow code mark, an optical means for producing a scanning spot of light having a length at least four times the width of a narrow code mark, four adjacent photodetectors, said optical means projecting the images of the respective lighted areas of the field of the identification marks onto said four photodetectors, the latter producing signals in accordance with the presence or absence of a code mark, and means coupled to said photodetectors to determine selectively the presence of a broad and a narrow code mark in accordance with the signals produced by said photodetectors.
Claim 2
Dependent Claim
179 words
An arrangement for the optical-electronic identification of a moving body provided with identification marks, said marks consisting of a plurality of code marks arranged in parallel relationship and being perpendicular to the direction of movement of said body, said code marks being constituted as broad and narrow code marks, the width of the broad code marks being three times that of the narrow code marks and the space on both sides of a narrow code mark being at least twice the width of a narrow code mark, an optical means for producing a scanning spot of light having a length at least four times the width of a narrow code mark, four adjacent photodetectors, said optical means projecting the images of the respective lighted areas of the field of the identification marks onto said four photodetectors, the latter producing signals in accordance with the presence or absence of a code mark, and means coupled to said photodetectors to determine selectively the presence of a broad and a narrow code mark in accordance with the signals produced by said photodetectors.
Claim 3
Dependent Claim
73 words
An arrangement as claimed in claim 1 wherein said means coupled to the photodetectors comprises three differential amplifiers responsive to the difference of the scanning signal of the fourth, outer photodetector with respect to the scanning signals of the remaining three photodetectors and two gates connected to said differential amplifiers, the first of said gates being responsive to a broad mark and the second of said gates being responsive to a narrow mark.
Claim 4
Dependent Claim
64 words
An arrangement according to claim 2 wherein the three difference signals of said differential amplifiers are directly supplied to the first gate, and the difference signal produced from the difference between the fourth, outer photodetector and one of the centrally arranged photodetectors is directly supplied to the second gate whereas the two other difference signals are supplied to said second gate in inverted form.
Claim 5
Dependent Claim
28 words
An arrangement according to claim 2 comprising an OR gate, the output signals of said two gates being supplied to said OR gate for producing a timing impulse.
Claim 6
Dependent Claim
28 words
An arrangement according to claim 1 comprising two light barriers for initiating the scanning process when the front edge of the moving body interrupts the said light barriers.
Claim 7
Dependent Claim
117 words
An arrangement according to claim 1 wherein said optical means comprises a source of light, a reflecting mirror positioned so as to be illuminated by said source of light, a condenser lens between said mirror and source, a lens system positioned to receive the image which is reflected by said mirror and to project the image onto the area to be scanned so as to produce the spot of light, a beam splitter disposed between Said mirror and the lens system, said lens system projecting an image of said spot of light through said beam splitter, said photodetectors being disposed at the focal point of the image formed by the lens system of said spot of light.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |