US5210402A
Expired / Lapsed
US
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Detection system for a radiation profile line
Assignee: OPTISCHE INDUSTIES "DE OUDE DELFT" BV
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Filing: 1988-07-07
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Granted: 1993-05-11
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Expires: 2008-07-07
Abstract
Abstract A radiation profile line originates from illuminating a scene by a fan beam of radiation and imaging the thus illuminated scene on a surface of an array of photosensitive elements. A read-out circuit has inputs connected to associated detection elements in the uppermost row. The read-out circuit comprises level detector circuitry to have the output signals of the columns take up either a "1" state or a "0" state. The outputs of the level detector curcuitry, each one of which corresponds to one of the inputs, are connected to a circuit that delivers a digital code representative of the position of the element in the uppermost row which has received the largest amount of light.
Inventors
- 👤 Gijsbert L. Oomen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:01
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/02; G01B11/024; H; H04; H04N; H04N25/00; H04N25/70; H04N25/71; H04N25/713; H04N25/76
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
A detection system for a radiation profile line which comprises: a matrix-containing M rows (1a, . . . , 1h) and N columns (2a, . . . , 2h) of photosensitive detection elements; means for shifting output signals of said detection elements under control clock signals and a read-out circuit having an input connected to an associated detection element, said read-out circuit comprising level detector circuitry, said shifting means shifting output signals of said detection elements row by row in a column direction, said input of said read-out circuit comprising said level detector circuitry, said level detector circuitry being coupled to an M th detection element of each column, said level detector having N outputs corresponding to a respective column, said outputs of said level detector circuitry being coupled to a circuit delivering a digital code representative of the position of an element in the M th row receiving the largest amount of light.
Claim 2
Dependent Claim
154 words
A detection system for a radiation profile line which comprises: a matrix-containing M rows (1a, . . . , 1h) and N columns (2a, . . . , 2h) of photosensitive detection elements; means for shifting output signals of said detection elements under control clock signals and a read-out circuit having an input connected to an associated detection element, said read-out circuit comprising level detector circuitry, said shifting means shifting output signals of said detection elements row by row in a column direction, said input of said read-out circuit comprising said level detector circuitry, said level detector circuitry being coupled to an M th detection element of each column, said level detector having N outputs corresponding to a respective column, said outputs of said level detector circuitry being coupled to a circuit delivering a digital code representative of the position of an element in the M th row receiving the largest amount of light.
Claim 3
Dependent Claim
42 words
The detection system as defined in claim 1 wherein said circuit delivering a digital code is a diode matrix and wherein number of input signals to and output signals from said diode matrix correspond to bits necessary for binary coding said columns.
Claim 4
Dependent Claim
52 words
The detection system as defined In claim 2 wherein output signals of said level detector circuitry is connected to a second diode matrix having like number of input and output signals as said diode matrix, said second diode matrix delivering a binary output signal complimentary to output signals of said diode matrix.
Claim 5
Dependent Claim
35 words
The detection system as defined in claim 3 and further including means for determining an average between a binary output signal of said diode matrix and a binary output signal of said second diode matrix.
Claim 6
Dependent Claim
16 words
The detection system as defined in claim 1 wherein said level detector circuitry comprises an n-flop.
Claim 7
Dependent Claim
20 words
The detection system as defined in claim 1 wherein said level detector circuitry comprises a level detector for each column.
Claim 8
Dependent Claim
33 words
The detection system as defined in claim 6 and further including means for summing output signals of all level detectors and a further level detector for comparing summed signals with a reference voltage.
Claim 9
Dependent Claim
28 words
The detection system as defined in claim 7 wherein said reference voltage is virtually equal to a highest output signal of said level detectors connected to said columns.
Claim 10
Dependent Claim
21 words
The detection system as defined in one of claims 1 to 8 wherein the number of rows is equal to one.
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) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |