GB1523721A - Surveillance systems - Google Patents
Surveillance systemsInfo
- Publication number
- GB1523721A GB1523721A GB33338/74A GB3333874A GB1523721A GB 1523721 A GB1523721 A GB 1523721A GB 33338/74 A GB33338/74 A GB 33338/74A GB 3333874 A GB3333874 A GB 3333874A GB 1523721 A GB1523721 A GB 1523721A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scene
- television
- sections
- tube
- angle
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19617—Surveillance camera constructional details
- G08B13/19626—Surveillance camera constructional details optical details, e.g. lenses, mirrors or multiple lenses
- G08B13/19628—Surveillance camera constructional details optical details, e.g. lenses, mirrors or multiple lenses of wide angled cameras and camera groups, e.g. omni-directional cameras, fish eye, single units having multiple cameras achieving a wide angle view
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19639—Details of the system layout
- G08B13/19641—Multiple cameras having overlapping views on a single scene
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Telescopes (AREA)
Abstract
1523721 Television HAWKER SIDDELEY DYNAMICS Ltd 22 Oct 1975 [29 July 1974] 33338/74 Heading H4F A wide angle television surveillance system comprises a plurality of differently orientated optical elements for viewing the total azimuth angle of the scene to be surveyed α# divided into a series of different equal azimuthal sections, and means for combining said different azimuthal sections of the scene to provide, in a television display for an observer or automatic monitoring apparatus, a corresponding plurality of sections arranged one above another in the display. The optical elements comprise a separate object lens L1-L3, Fig. 1, for each section, masks being used to restrict the angle of scene accepted by each lens, and the several azimuthal sections of the image scene being received on a detector surface D on areas alongside one-another. The total image formation is scanned by a T.V. camera having a tube 11, Fig. 3. A multi-facet optical fibre block 10 is mounted on tube 11. The facets 13-15 of the block are so orientated as to lie perpendicular to the optical axis of a respective object lens at its focal plane to correct for trapezium distortion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33338/74A GB1523721A (en) | 1975-10-22 | 1975-10-22 | Surveillance systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33338/74A GB1523721A (en) | 1975-10-22 | 1975-10-22 | Surveillance systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1523721A true GB1523721A (en) | 1978-09-06 |
Family
ID=10351665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33338/74A Expired GB1523721A (en) | 1975-10-22 | 1975-10-22 | Surveillance systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1523721A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2479991A1 (en) * | 1980-04-08 | 1981-10-09 | American District Telegraph Co | PASSIVE INFRARED DEVICE FOR DETECTING INTRUSION |
US5844520A (en) * | 1979-05-16 | 1998-12-01 | British Aerospace Plc | Surveillance apparatus |
WO2008129552A1 (en) * | 2007-04-19 | 2008-10-30 | Dvp Technologies Ltd. | Imaging system and method for use in monitoring a field of regard |
-
1975
- 1975-10-22 GB GB33338/74A patent/GB1523721A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5844520A (en) * | 1979-05-16 | 1998-12-01 | British Aerospace Plc | Surveillance apparatus |
FR2479991A1 (en) * | 1980-04-08 | 1981-10-09 | American District Telegraph Co | PASSIVE INFRARED DEVICE FOR DETECTING INTRUSION |
WO2008129552A1 (en) * | 2007-04-19 | 2008-10-30 | Dvp Technologies Ltd. | Imaging system and method for use in monitoring a field of regard |
US8937651B2 (en) | 2007-04-19 | 2015-01-20 | Dvp Technologies Ltd. | Imaging system and method for use in monitoring a field of regard |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |