US3781553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for analyzing an image
Assignee: Individual
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Filing: 1972-11-28
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Granted: 1973-12-25
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Expires: 1992-11-28
Abstract
Abstract The apparatus converts an image into a set of coefficients of Fourier series by systems of two-dimensional functions. The apparatus includes means for optical reproduction of the image being analyzed, the light radiated by the means being masked in accordance with a law expressed as a set of twodimensional functions. The radiated light is received by a matrix of photosensitive cells connected at the intersections of a system of orthogonal buses. During an anlysis, a voltage generator connected to the buses feeds thereto a voltage pattern to render the photo sensitive cells light-responsive and lightirresponsive in groups distributed in space over the area of the matrix in accordance with a successive one of the given set of two-dimensional functions. Thus, the matrix performs at the same time both the masking and registration of the masked light flux. The sum total of the absolute values of the electric currents through the photocells becomes proportional to the integrated light flux of the image field, and thus corresponds to a coefficient representative of the shape of the image.
Inventors
- 👤 K Berkovskaya
- 👤 N Lapteva
- 👤 B Podlaskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:34
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001; G06V; G06V10/00; G06V10/10; G06V10/12; G06V10/20; G06V10/40; G06V10/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
221 words
An apparatus for analyzing the shape of an image, comprising: means for optical reproduction of an image being analyzed, adapted to irradiate light which, in the process of an analysis, is masked at given time intervals in accordance with a given law expressed as a set of two-dimensional functions; a matrix of photosensitive cells displaying, when irradiated with light, symmetric volt-ampere characteristics including saturation areas; a system of orthogonal buses, said photosensitive cells of said matrix being connected at the respective intersections of said orthogonal buses; a voltage generator having connected individually to the output thereof said buses of said system, said voltage generator being such that at said given time intervals there is supplied such a voltage pattern to said buses, which renders said cells into light-responsive and lightirresponsive state in groups distributed over the area of said matrix in accordance with a successive one of said twodimensional functions of said set, whereby said matrix effects simultaneously both the masking and registration of the masked light flux, the arrangement being such that there is a sum total of the absolute values of the electric currents flowing through said cells, which is proportional to the intergral light flux of the image field for each said given two-dimensional masking function, said sum total carrying information representative of the shape of said image.
Claim 2
Independent Claim
221 words
An apparatus for analyzing the shape of an image, comprising: means for optical reproduction of an image being analyzed, adapted to irradiate light which, in the process of an analysis, is masked at given time intervals in accordance with a given law expressed as a set of two-dimensional functions; a matrix of photosensitive cells displaying, when irradiated with light, symmetric volt-ampere characteristics including saturation areas; a system of orthogonal buses, said photosensitive cells of said matrix being connected at the respective intersections of said orthogonal buses; a voltage generator having connected individually to the output thereof said buses of said system, said voltage generator being such that at said given time intervals there is supplied such a voltage pattern to said buses, which renders said cells into light-responsive and lightirresponsive state in groups distributed over the area of said matrix in accordance with a successive one of said twodimensional functions of said set, whereby said matrix effects simultaneously both the masking and registration of the masked light flux, the arrangement being such that there is a sum total of the absolute values of the electric currents flowing through said cells, which is proportional to the intergral light flux of the image field for each said given two-dimensional masking function, said sum total carrying information representative of the shape of said image.
Claim 3
Dependent Claim
162 words
An apparatus as claimed in claim 1, wherein said matrix includes a set of scanistors in the form of a photosensitive semiconductor structure having p-n junctions in the form of strips, featuring the same effectiveness of separation of the minority current carriers produced upon said structure being irradiated with light, said strips lying in two respective planes parallel to that surface of said structure, upon which light is to fall in operation, those of said strips that are lying in the same plane being geometrically parallel, electrically insulated from one another and orthogonal in respect of the strips of the p-n junctions of the other one of said planes, whereby there is formed in the areas of intersection of said strips a three-layer structure featuring a symmetrical volt-ampere characteristic upon being irradiated with light, each said strip of p-n junctions being associated with an individual bus, the family of said buses forming said system of orthogonal buses connected to said voltage generator.
Claim 4
Dependent Claim
108 words
An apparatus as claimed in claim 1, wherein said matrix includes a discrete scanistor including a plurality of photosensitive cells having each two p-n junctions featuring the same effectiveness of separation of the minority current carriers produced upon said photosensitive cells being irradiated with light, said p-n junctions being disposed on the external surface of said cells, symmetrically in respect of the base area which separates them, in a plane upon which light is incident in operation of said apparatus, each one of said photosensitive cells being connected at the respective intersection of said system of orthogonal buses by the areas thereof, having the same type of conductivity.
Claim 5
Dependent Claim
102 words
An apparatus as claimed in claim 1, wherein said photosensitive cell of said matrix includes a five-layer semiconductor structure having four p-n junctions of which the internal two are adapted to act alternatingly as collector ones, depending on the polarity of the voltage applied thereacross, said two junctions featuring the same effectiveness of separation of the minority current carriers produced upon said matrix being irradiated with light, the other two of said four junctions acting as emitter ones and providing for the presence in the volt-ampere characteristic of an area with negative resistance, whereby said semi-conductor structure is capable of memorizing information.
Claim 6
Dependent Claim
55 words
An apparatus as claimed in claim 3, wherein said means for optical reproduction of said image being analyzed includes a matrix of injection light-emitting diodes, each said light-emitting diode being secured to a respective one of said photosensitive cells, so that the light emitted thereby is received by the photosensitive surface of said respective cell.
Claim 7
Dependent Claim
54 words
An apparatus as claimed in claim 4, wherein said means for optical reproduction of said image being analyzed includes a matrix of injection light-emitting diodes, each said light-emitting diode being secured to a respective one of said photosensitive cells, so that the light emitted thereby is received by the photosensitive surface of said cell.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |