BE901908A - Circuit pour allonger de maniere variable le temps de propagation d'une ligne a retard a ultrasons. - Google Patents

Circuit pour allonger de maniere variable le temps de propagation d'une ligne a retard a ultrasons.

Info

Publication number
BE901908A
BE901908A BE0/214628A BE214628A BE901908A BE 901908 A BE901908 A BE 901908A BE 0/214628 A BE0/214628 A BE 0/214628A BE 214628 A BE214628 A BE 214628A BE 901908 A BE901908 A BE 901908A
Authority
BE
Belgium
Prior art keywords
circuit
delay line
propagation time
ultrasonic delay
variable extension
Prior art date
Application number
BE0/214628A
Other languages
English (en)
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of BE901908A publication Critical patent/BE901908A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/18—Networks for phase shifting
    • H03H7/20—Two-port phase shifters providing an adjustable phase shift

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

Le circuit sert à allonger le temps de propagation d'une ligne à retard à ultrasons d'un retard légèrement inférieur à une ligne pour des signaux de télévision couleur. Ce circuit comprend une résistance variable connectée à la ligne à retard et, entre la première entrée et la seconde entrée connectée au potentiel de référence, une bobine qui est le premier enroulement (8') d'un transformateur (8) dont le second enroulement (8'') est connecté au potentiel de référence et à une borne de la résistance variable.
BE0/214628A 1984-03-10 1985-03-08 Circuit pour allonger de maniere variable le temps de propagation d'une ligne a retard a ultrasons. BE901908A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843408821 DE3408821A1 (de) 1984-03-10 1984-03-10 Schaltung zur veraenderbaren verlaengerung der laufzeit einer ultraschall-verzoegerungsleitung

Publications (1)

Publication Number Publication Date
BE901908A true BE901908A (fr) 1985-07-01

Family

ID=6230106

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/214628A BE901908A (fr) 1984-03-10 1985-03-08 Circuit pour allonger de maniere variable le temps de propagation d'une ligne a retard a ultrasons.

Country Status (5)

Country Link
US (1) US4679064A (fr)
JP (1) JPS61501365A (fr)
BE (1) BE901908A (fr)
DE (1) DE3408821A1 (fr)
WO (1) WO1985004303A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2657131B2 (ja) * 1991-06-28 1997-09-24 三洋電機株式会社 Ｙ／ｃ分離回路
JP2627367B2 (ja) * 1991-04-30 1997-07-02 三洋電機株式会社 Ｙ／ｃ分離回路
DE19752154B4 (de) * 1997-11-25 2011-05-12 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Sendesystem für Ultraschallwellen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258889B (de) * 1965-06-26 1968-01-18 Telefunken Patent Schaltung in einem Laufzeitdemodulator fuer PAL-Farbfernschsignale
NL133796C (fr) * 1965-01-21 1900-01-01
DE1281485C2 (de) * 1965-03-09 1975-02-06 Loewe Opta Gmbh, 1000 Berlin Abgleichbare zusatz-verzoegerungsleitung in einer laufzeit-signalaufspaltschaltung fuer farbfernsehempfaenger der pal-art
NZ157149A (fr) * 1968-07-31
US3745239A (en) * 1972-03-02 1973-07-10 Motorola Inc Decoding system for a pal color television receiver

Also Published As

Publication number Publication date
DE3408821A1 (de) 1985-09-12
US4679064A (en) 1987-07-07
JPS61501365A (ja) 1986-07-03
DE3408821C2 (fr) 1991-06-06
WO1985004303A1 (fr) 1985-09-26

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ROBERT BOSCH G.M.B.H.

Effective date: 19930331