US3782543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document recognition systems
Assignee: Individual
•
Filing: 1972-10-12
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Granted: 1974-01-01
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Expires: 1992-10-12
Abstract
Abstract A bank note recognition system includes an optical analyser for scrutinising the watermark, selected areas of print on the surface of the bank note, the wire band in the bank note and the density of the paper of the bank note. The analyser in its simplest form includes a lamp for illuminating a discrete area of the bank note and two photo electric elements on opposite side of the bank note for respectively sensing the transparency and reflectivity of the discrete area of the bank note. The analysis will provide indication whether the bank note is genuine and will accept the bank note only if considered to be genuine.
Inventors
- 👤 M Martelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:50
CPC Classifications
G; G07; G07D; G07D7/00; G07D7/06; G07D7/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
153 words
In a document recognition device, an optical analyser comprising support means for supporting a document to be analysed, light source means mounted to direct light at a predetermined area of the document a first photosensitive member mounted to receive from the light source means, light which has passed through the predetermined area of the document and providing an output indicative of the light received, a second photosensitive member mounted to receive light from the light source means that has been reflected from the predetermined area and providing an output indicative of the light received reference means for establishing reference ranges for the transparency and reflectivity of valid documents, and comparison means connected to receive the output signals from the first and second photosensitive members and connected to the reference means to compare the output signals with the reference ranges to determine validity of the document in dependence upon the result of the comparison.
Claim 2
Dependent Claim
153 words
In a document recognition device, an optical analyser comprising support means for supporting a document to be analysed, light source means mounted to direct light at a predetermined area of the document a first photosensitive member mounted to receive from the light source means, light which has passed through the predetermined area of the document and providing an output indicative of the light received, a second photosensitive member mounted to receive light from the light source means that has been reflected from the predetermined area and providing an output indicative of the light received reference means for establishing reference ranges for the transparency and reflectivity of valid documents, and comparison means connected to receive the output signals from the first and second photosensitive members and connected to the reference means to compare the output signals with the reference ranges to determine validity of the document in dependence upon the result of the comparison.
Claim 3
Dependent Claim
17 words
A device according to claim 1, in which the light source means comprises a single light source.
Claim 4
Dependent Claim
83 words
A device according to claim 1, in which the light source and the first photosensitive member lie along a common axis which extends through and is inclined to the plane of the document, and in which the second photosensitive member lies on the same side of the document as the light source and extends along an axis that intersects the said common axis in the plane of the document and makes the same angle with the said plane as the said common axis.
Claim 5
Dependent Claim
39 words
A device according to claim 1, including another optical analyser similar to the first mentioned analyser, the light source means of the two analysers being located on opposite sides of the document and directed at the same predetermined area.
Claim 6
Dependent Claim
30 words
A device according to claim 1 wherein the two optical analysers are spAced apart in the direction of the plane of the document for sequementially analysing the said predetermined area.
Claim 7
Dependent Claim
146 words
A bank note recognition system, comprising an inlet analysing means including at least one optical analyser according to claim 1 a bank note diverter first guide means defining a first path for the bank note from the inlet through the analysing means to the diverter an outlet second guide means defining a second path for the bank note from the diverter to the outlet a bank note reception device, third guide means defining a third path from the diverter to the bank note reception device, and means connecting the output of the optical analyser to control the diverter and cause the diverter to guide the bank note from the first to the second path if the bank note is considered to be a forgery and to guide the bank note from the first to the third path if the bank note is considered to be genuine.
Claim 8
Dependent Claim
18 words
A system according to claim 6, wherein the first path upstream of the analysing means follows a bend.
Claim 9
Dependent Claim
41 words
A device according to claim 6 including sensing means located in the first guide path upstream of the analyser and responsive to the passage of a bank note there past to activate the analysing means for analysis of the bank note.
Claim 10
Dependent Claim
104 words
A device according to claim 6, wherein said first guide means includes a first pair of co-operating rollers located at the inlet means coupled to the rollers to drive the rollers in one sense in which a bank note fed through the inlet is driven by the rollers along the first path towards the analyser feeler means for senzing the thickness of the bank note as it emerges from the rollers and operative when the thickness exceeds a predetermined limit to cause the means driving the rollers to reverse the sense of rotation of the rollers and return the bank note to the inlet.
Claim 11
Dependent Claim
15 words
A device according to claim 6, wherein said diverter comprises an electromagnetically operated guide member.
Claim 12
Dependent Claim
37 words
wherein the analyser means includes an optical analyser support member, and means for moving the optical analyser relative to the support member whereby to change the predetermined area of the bank note that is to be analysed.
Claim 13
Dependent Claim
37 words
wherein the analyser means includes an optical analyser support member, and means for moving the optical analyser relative to the support member whereby to change the predetermined area of the bank note that is to be analysed.
Claim 14
Dependent Claim
51 words
A device according to claim 7, including further sensing means located in the first guide path down stream of the analyser and responsive to the passage of the trailing edge of the bank note there past to deactivate the analysing means in readiness for the analysis of a subsequent bank note.
Claim 15
Dependent Claim
73 words
A device according to claim 6 including first sensing means second sensing means means locating the first and second sensing means in the first path and spaced along the first path by a distance just less than the length of a bank note, and means responsive only to the first and second sensing means simultaneously sensing the presence of the bank note to allow the bank note to proceed along the first path.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |