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GB1326123A - Road condition broadcasting - Google Patents

Road condition broadcasting

Info

Publication number
GB1326123A
GB1326123A GB2481671A GB2481671A GB1326123A GB 1326123 A GB1326123 A GB 1326123A GB 2481671 A GB2481671 A GB 2481671A GB 2481671 A GB2481671 A GB 2481671A GB 1326123 A GB1326123 A GB 1326123A
Authority
GB
United Kingdom
Prior art keywords
occasional
pilot tone
stages
road condition
transmission
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
GB2481671A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1326123A publication Critical patent/GB1326123A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/094—Hardware aspects; Signal processing or signal properties, e.g. frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/08—Transmission systems not characterised by the medium used for transmission characterised by the use of a sub-carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transmitters (AREA)

Abstract

1326123 Radio systems INTERNATIONAL STANDARD ELECTRIC CORP 19 April 1971 [21 March 1970] 24816/71 Heading H4L In an arrangement for occasional transmission of information on road conditions over a radio channel in which the transmission normally includes a pilot tone, the pilot tone is suppressed during the occasional transmissions so that receivers equipped with means for recognition of the reception of the carrier without a concurrent pilot tone may switch on the otherwise disabled audio stages, or apply the demodulated occasional program instead of some other program material to such stages.
GB2481671A 1970-03-21 1971-04-19 Road condition broadcasting Expired GB1326123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702013659 DE2013659A1 (en) 1970-03-21 1970-03-21 Process and facilities for the implementation of a unidirectional traffic warning radio

Publications (1)

Publication Number Publication Date
GB1326123A true GB1326123A (en) 1973-08-08

Family

ID=5765875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2481671A Expired GB1326123A (en) 1970-03-21 1971-04-19 Road condition broadcasting

Country Status (9)

Country Link
AT (1) AT315245B (en)
BE (1) BE764597A (en)
CH (1) CH556581A (en)
DE (1) DE2013659A1 (en)
ES (1) ES389339A1 (en)
FR (1) FR2083479B1 (en)
GB (1) GB1326123A (en)
NL (1) NL7103614A (en)
SE (1) SE371728B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60251724A (en) * 1984-05-29 1985-12-12 Pioneer Electronic Corp Receiver for identifying program

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1125864A (en) * 1966-06-15 1968-09-05 Philips Electronic Associated Improvements in or relating to radio receivers

Also Published As

Publication number Publication date
FR2083479A1 (en) 1971-12-17
BE764597A (en) 1971-09-22
ES389339A1 (en) 1973-06-01
AT315245B (en) 1974-05-10
CH556581A (en) 1974-11-29
DE2013659A1 (en) 1971-10-07
NL7103614A (en) 1971-09-23
FR2083479B1 (en) 1975-10-31
SE371728B (en) 1974-11-25

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Legal Events

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