GB1263080A - Improvements in or relating to light detector arrays - Google Patents
Improvements in or relating to light detector arraysInfo
- Publication number
- GB1263080A GB1263080A GB21434/68A GB2143468A GB1263080A GB 1263080 A GB1263080 A GB 1263080A GB 21434/68 A GB21434/68 A GB 21434/68A GB 2143468 A GB2143468 A GB 2143468A GB 1263080 A GB1263080 A GB 1263080A
- Authority
- GB
- United Kingdom
- Prior art keywords
- array
- integration time
- detectors
- detector
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000003491 array Methods 0.000 title 1
- 230000010354 integration Effects 0.000 abstract 6
- 239000011159 matrix material Substances 0.000 abstract 3
- 230000003111 delayed effect Effects 0.000 abstract 2
- 230000035945 sensitivity Effects 0.000 abstract 2
- 230000001934 delay Effects 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/50—Control of the SSIS exposure
- H04N25/53—Control of the integration time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
- H04N25/779—Circuitry for scanning or addressing the pixel array
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
- H04N25/7795—Circuitry for generating timing or clock signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
1,263,080. Television. PLESSEY CO. Ltd. 5 May, 1969 [6 May, 1968], No. 21434/68. Heading H4F. In a light detector array in which a plurality of light detectors, e.g. photo-diodes, are successively scanned and in which the amount of light falling on each detector is determined by initially charging each detector and detecting the charge remaining thereon after being exposed for a period defining an integration time, the integration time is made different from the scanning rate of the plurality of detectors by delaying the initial charging of each detector with respect to the instant at which it was scanned. In the embodiment described the detectors are arranged in matrix configuration in lines and columns and are successively scanned by means of ring counters, the desired integration time being achieved by delaying the time at which a detector is charged relative to the time at which it is sampled. Although the delay may be continuously variable it is preferably a digital delay which delays a signal which is dependent upon the column or line scanning rate, this delayed signal being fed to a shift register associated with the lines or columns of the matrix array which causes the light detectors of the array to be successively charged, i.e. the integration time of the detectors are varied in multiples of the line or column scan time. Alternatively an input scanning signal (clock signal) may be digitally delayed and fed to a further ring counter associated with the lines or columns of the matrix array operable for causing the light detectors of the array to be successively charged. By having a short integration time less blur will be obtained when the detected image is moving. In addition by varying the integration time the signal level and thus overall sensitivity of the array is varied. An automatic control of sensitivity of the array in proportion to the light level may be provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21434/68A GB1263080A (en) | 1968-05-06 | 1968-05-06 | Improvements in or relating to light detector arrays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21434/68A GB1263080A (en) | 1968-05-06 | 1968-05-06 | Improvements in or relating to light detector arrays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1263080A true GB1263080A (en) | 1972-02-09 |
Family
ID=10162895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21434/68A Expired GB1263080A (en) | 1968-05-06 | 1968-05-06 | Improvements in or relating to light detector arrays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1263080A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2284868A1 (en) * | 1974-09-11 | 1976-04-09 | Ibm France | Measuring light on charge memory photocell - by measuring loss of reference charge after set period |
US4109284A (en) * | 1975-12-15 | 1978-08-22 | International Business Machines Corporation | Self-scanning photo-sensitive circuits |
EP0025175A2 (en) * | 1979-09-10 | 1981-03-18 | Siemens Aktiengesellschaft | Circuit for sensor controlled distance measurement provided with a light measuring means |
EP0066719A2 (en) * | 1981-06-08 | 1982-12-15 | International Business Machines Corporation | Measuring apparatus with response adjustment |
GB2170374A (en) * | 1984-12-28 | 1986-07-30 | Canon Kk | Image sensing apparatus |
EP0569202A2 (en) * | 1992-05-06 | 1993-11-10 | Sony Corporation | Solid state imaging device with electronic shutter |
GB2317770A (en) * | 1982-07-14 | 1998-04-01 | British Aerospace | Solid state image sensors |
-
1968
- 1968-05-06 GB GB21434/68A patent/GB1263080A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2284868A1 (en) * | 1974-09-11 | 1976-04-09 | Ibm France | Measuring light on charge memory photocell - by measuring loss of reference charge after set period |
US4109284A (en) * | 1975-12-15 | 1978-08-22 | International Business Machines Corporation | Self-scanning photo-sensitive circuits |
EP0025175A2 (en) * | 1979-09-10 | 1981-03-18 | Siemens Aktiengesellschaft | Circuit for sensor controlled distance measurement provided with a light measuring means |
EP0025175A3 (en) * | 1979-09-10 | 1983-03-09 | Siemens Aktiengesellschaft | Circuit for sensor controlled distance measurement provided with a light measuring means |
EP0066719A2 (en) * | 1981-06-08 | 1982-12-15 | International Business Machines Corporation | Measuring apparatus with response adjustment |
EP0066719A3 (en) * | 1981-06-08 | 1986-02-05 | International Business Machines Corporation | Measuring apparatus with response adjustment |
GB2317770A (en) * | 1982-07-14 | 1998-04-01 | British Aerospace | Solid state image sensors |
GB2317770B (en) * | 1982-07-14 | 1998-07-15 | British Aerospace | Image sensing |
GB2170374A (en) * | 1984-12-28 | 1986-07-30 | Canon Kk | Image sensing apparatus |
EP0569202A2 (en) * | 1992-05-06 | 1993-11-10 | Sony Corporation | Solid state imaging device with electronic shutter |
EP0569202A3 (en) * | 1992-05-06 | 1993-12-08 | Sony Corp | Solid state imaging device with electronic shutter |
US5420631A (en) * | 1992-05-06 | 1995-05-30 | Sony Corporation | Solid state image pickup device and method |
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