GB1252093A - - Google Patents

Info

Publication number
GB1252093A
GB1252093A GB1252093DA GB1252093A GB 1252093 A GB1252093 A GB 1252093A GB 1252093D A GB1252093D A GB 1252093DA GB 1252093 A GB1252093 A GB 1252093A
Authority
GB
United Kingdom
Prior art keywords
sept
platform
track
conductor
carriage
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
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 filed Critical
Publication of GB1252093A publication Critical patent/GB1252093A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

1,252,093. Track apparatus. LABORATOIRE GENERAL DE TELECOMMUNICATIONS. 22 Sept., 1969 [20 Sept., 1968], No. 46542/69. Heading B7N. [Also in Division H4] In a system for transmitting a picture of at least one stationary point, e.g. a railway platform, to at least one moving railway carriage, a television camera on the platform is connected to a transmitter feeding a conductor extending for a short distance along the track and earthed through its characteristic impedance so that there is little radiation. A coupling loop on the carriage feeds a television receiver to provide information for the guard controlling the train doors. The signals from several cameras may be multiplexed on to the conductor.
GB1252093D 1968-09-20 1969-09-22 Expired GB1252093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR166895 1968-09-20

Publications (1)

Publication Number Publication Date
GB1252093A true GB1252093A (en) 1971-11-03

Family

ID=8654762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1252093D Expired GB1252093A (en) 1968-09-20 1969-09-22

Country Status (6)

Country Link
BR (1) BR6912578D0 (en)
CH (1) CH493358A (en)
DE (1) DE1947743A1 (en)
FR (1) FR1588933A (en)
GB (1) GB1252093A (en)
NL (1) NL6914250A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1759954A1 (en) * 2005-09-01 2007-03-07 Alcatel Method and system for monitoring a public transport vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207688C1 (en) * 1992-03-11 1993-06-03 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1759954A1 (en) * 2005-09-01 2007-03-07 Alcatel Method and system for monitoring a public transport vehicle
WO2007025862A1 (en) * 2005-09-01 2007-03-08 Alcatel Lucent Monitoring method and system for a public transport vehicle

Also Published As

Publication number Publication date
NL6914250A (en) 1970-03-24
DE1947743A1 (en) 1970-04-30
BR6912578D0 (en) 1973-03-29
FR1588933A (en) 1970-03-16
CH493358A (en) 1970-07-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees