GB2157912B - Video signal transmission systems - Google Patents

Video signal transmission systems

Info

Publication number
GB2157912B
GB2157912B GB08510050A GB8510050A GB2157912B GB 2157912 B GB2157912 B GB 2157912B GB 08510050 A GB08510050 A GB 08510050A GB 8510050 A GB8510050 A GB 8510050A GB 2157912 B GB2157912 B GB 2157912B
Authority
GB
United Kingdom
Prior art keywords
video signal
signal transmission
transmission systems
systems
video
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
Application number
GB08510050A
Other versions
GB8510050D0 (en
GB2157912A (en
Inventor
Peter Victor Collins
David John Benjamin Pearce
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB8510050D0 publication Critical patent/GB8510050D0/en
Publication of GB2157912A publication Critical patent/GB2157912A/en
Application granted granted Critical
Publication of GB2157912B publication Critical patent/GB2157912B/en
Expired legal-status Critical Current

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
    • 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
    • G08B13/19665—Details related to the storage of video surveillance data
    • G08B13/19676—Temporary storage, e.g. cyclic memory, buffer storage on pre-alarm
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
GB08510050A 1984-04-19 1985-04-19 Video signal transmission systems Expired GB2157912B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8410337 1984-04-19

Publications (3)

Publication Number Publication Date
GB8510050D0 GB8510050D0 (en) 1985-06-26
GB2157912A GB2157912A (en) 1985-10-30
GB2157912B true GB2157912B (en) 1987-05-07

Family

ID=10559931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08510050A Expired GB2157912B (en) 1984-04-19 1985-04-19 Video signal transmission systems

Country Status (2)

Country Link
GB (1) GB2157912B (en)
IT (1) IT1199875B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4918523A (en) * 1987-10-05 1990-04-17 Intel Corporation Digital video formatting and transmission system and method
FR2673060B1 (en) * 1991-02-19 1993-06-04 Matra Communication VISUAL SPEAKER TERMINAL.

Also Published As

Publication number Publication date
GB8510050D0 (en) 1985-06-26
GB2157912A (en) 1985-10-30
IT1199875B (en) 1989-01-05
IT8567366A0 (en) 1985-04-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010419