US3823261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image motion and change transducers and systems controlled thereby
Assignee: Individual
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Filing: 1971-10-29
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Granted: 1974-07-09
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Expires: 1991-10-29
Abstract
Abstract An image comparator includes means for scanning a selected area of an arbitrary image and for converting the video pattern into analog video electrical signals which are treated to emphasize their intermediate frequency range components and converted into binary signals for comparison with a signal representative of a reference image.
Inventors
- 👤 E Bolsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:06
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/194; G08B13/196; G08B13/19602; F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2226; F41G7/2253; F41G7/2273; F41G7/2293; F41G7/34; F41G7/343; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G03; G03B; G03B15/00; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/20; G08B13/19604; G08B13/19617; G08B13/1963; G08B13/19634; H; H04; H04N; H04N23/00; H04N23/60; H04N23/68; H04N23/681; H04N23/6811; H04N5/00; H04N5/14; H04N5/144; H04N5/145
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
Apparatus for comparing arbitrary images comprising, in combination: scanning means for scanning a selected area of a first arbitrary image, said means operating cyclically to provide at least one scan having a given video pattern, photosensitive means cooperating with said scanning means for changing each said video pattern into video electrical signals which are respectively the analogs of said video patterns, frequencyselective filtering and amplyfying means for emphasizing the components of said video electrical signals which fall within an intermediate frequency range, quantizing means cooperating with said filtering and amplifying means for converting the electrical signals produced thereby into first binary signals, a source of reference binary signals comparable with said first binary signals and representative of at least one reference image to be compared with said first image, and means for comparing said first binary signals with said reference binary signals and for producing at least one electrical output signal which is indicative of differences occurring between said binary signals.
Claim 2
Dependent Claim
161 words
Apparatus for comparing arbitrary images comprising, in combination: scanning means for scanning a selected area of a first arbitrary image, said means operating cyclically to provide at least one scan having a given video pattern, photosensitive means cooperating with said scanning means for changing each said video pattern into video electrical signals which are respectively the analogs of said video patterns, frequencyselective filtering and amplyfying means for emphasizing the components of said video electrical signals which fall within an intermediate frequency range, quantizing means cooperating with said filtering and amplifying means for converting the electrical signals produced thereby into first binary signals, a source of reference binary signals comparable with said first binary signals and representative of at least one reference image to be compared with said first image, and means for comparing said first binary signals with said reference binary signals and for producing at least one electrical output signal which is indicative of differences occurring between said binary signals.
Claim 3
Dependent Claim
16 words
Apparatus, as set forth in claim 1, in which said video electrical signals are substantially uninterrupted.
Claim 4
Dependent Claim
16 words
Apparatus, as set forth in claim 1 wherein said scanning means and said source operate synchronously.
Claim 5
Dependent Claim
60 words
Apparatus, as set forth in claim 1, wherein said electrical output signal comprises at least one binary signal which changes state whenever one of said binary signals being compared changes its binary state before the other and which reverts to its preceding state whenever a further change of state takes place in either one of said binary signals being compared.
Claim 6
Dependent Claim
105 words
Apparatus, as set forth in claim 1, wherein said source comprises scanning means for scanning a selected area of said reference image, said means operating cyclically to provide at least one scan having a given video pattern, photosensitive means cooperating with said scanning means for changing each said video pattern into video electrical signals which are respectively the analogs of said video patterns, frequency-selective filtering and amplifying means for emphasizing the components of said video electrical signals which fall within an intermediate frequency range, and quantizing means cooperating with said filtering and amplifying means for converting the electrical signals produced thereby into reference binary signals.
Claim 7
Dependent Claim
38 words
Apparatus, as set forth in claim 1, wherein said source comprises means for recording said first binary signals during a first period, and for playing back said recording during a later period for providing said reference binary signaLs.
Claim 8
Dependent Claim
118 words
Apparatus, as set forth in claim 1, further comprising: first delay means cooperating with said quantizing means for providing first delayed binary signals, second delay means cooperating with said source for providing delayed reference binary signals, means for sensing the degree of correlation between said first binary signals and said delayed reference binary signals on one part, and between said first delayed binary signals and said reference binary signals on the other part, means cooperating with said means for sensing the degree of correlation for determining the difference between said degrees of correlation, a second reference source, said latter reference being capable of discriminating, when multiplied with said difference, between displacements of said first image in three coordinates.
Claim 9
Dependent Claim
27 words
Apparatus, as set forth in claim 7, wherein said second reference source furnishes at least one signal varying in direct relation with a component of scanning velocity.
Claim 10
Dependent Claim
46 words
Apparatus in accordance with claim 1, wherein said scanning means and said photo-sensitive means comprise a plurality of scanners each including photo-sensitive means, said scanners scanning distinct images and communicating with a central frequency selective filtering and amplifying means for making the apparatus resistant to tampering.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |