FR2443165A1 - Agencement d'accord continu pour un televiseur multibande - Google Patents

Agencement d'accord continu pour un televiseur multibande

Info

Publication number
FR2443165A1
FR2443165A1 FR7929404A FR7929404A FR2443165A1 FR 2443165 A1 FR2443165 A1 FR 2443165A1 FR 7929404 A FR7929404 A FR 7929404A FR 7929404 A FR7929404 A FR 7929404A FR 2443165 A1 FR2443165 A1 FR 2443165A1
Authority
FR
France
Prior art keywords
tuning
along
continuous tuning
tuning arrangement
multiband
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.)
Granted
Application number
FR7929404A
Other languages
English (en)
Other versions
FR2443165B1 (fr
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of FR2443165A1 publication Critical patent/FR2443165A1/fr
Application granted granted Critical
Publication of FR2443165B1 publication Critical patent/FR2443165B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
    • H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

L'invention concerne un système d'accord pour produire une tension d'accord pour un oscillateur local à varactor. Selon l'invention, il comprend un élément résistif continu 111 ayant des points 101, 102, 103, 104 le long de son trajet, qui définissent des sections 111a, 111b, 111c correspondant aux bandes VHF basse, VHF haute, UHF, et un contact mobile 116. Un agencement de détection détermine la position du contact 116 le long de l'élément 111 pour déterminer quelle bande est accordée et il applique sélectivement des tensions correspondant aux grandeurs de la tension d'accord correspondant au début et à la fin des diverses bandes, à des points respectifs le long de l'élément 111. L'invention s'applique notamment aux téléviseurs.
FR7929404A 1978-11-30 1979-11-29 Agencement d'accord continu pour un televiseur multibande Granted FR2443165A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/965,218 US4249132A (en) 1978-11-30 1978-11-30 Continuous tuning arrangement for a multiband television receiver

Publications (2)

Publication Number Publication Date
FR2443165A1 true FR2443165A1 (fr) 1980-06-27
FR2443165B1 FR2443165B1 (fr) 1984-01-20

Family

ID=25509650

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7929404A Granted FR2443165A1 (fr) 1978-11-30 1979-11-29 Agencement d'accord continu pour un televiseur multibande

Country Status (8)

Country Link
US (1) US4249132A (fr)
JP (1) JPS5939922B2 (fr)
CA (1) CA1137235A (fr)
DE (1) DE2948302A1 (fr)
FI (1) FI70351C (fr)
FR (1) FR2443165A1 (fr)
GB (1) GB2037517B (fr)
IT (1) IT1127646B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7906578A (nl) * 1979-09-03 1981-03-05 Philips Nv Afstemschakeling.
US4317227A (en) * 1980-06-09 1982-02-23 Zenith Radio Corporation Multi-mode automatic channel frequency synthesis system
US4410913A (en) * 1981-10-28 1983-10-18 Rca Corporation Tuning display for a television receiver
DE10219959B4 (de) * 2002-05-03 2006-05-24 Schleifring Und Apparatebau Gmbh Schleifring oder Schleifbahn zur übertragung elektrischer Signale zwischen zwei gegeneinander beweglichen Einheiten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492514A (en) * 1967-04-17 1970-01-27 Motorola Inc Voltage variable capacitance range extender
DE1591364B1 (de) * 1967-04-29 1970-08-20 Philips Patentverwaltung Schaltungsanordnung zum Abstimmen
US3646450A (en) * 1969-08-13 1972-02-29 Zenith Radio Corp Voltage-controlled plural-band tuner for a wave signal receiver
US3750030A (en) * 1970-12-29 1973-07-31 Gen Electric Frequency switching circuitry for varactor tuned radio receivers
US3878466A (en) * 1973-02-12 1975-04-15 Zenith Radio Corp Varactor tuning system
US3906373A (en) * 1973-02-12 1975-09-16 Zenith Radio Corp Varactor tuning system
US3962643A (en) * 1974-08-05 1976-06-08 Zenith Radio Corporation Abrupt junction varactor diode television tuner

Also Published As

Publication number Publication date
US4249132A (en) 1981-02-03
GB2037517A (en) 1980-07-09
FI70351C (fi) 1986-09-15
CA1137235A (fr) 1982-12-07
IT7927655A0 (it) 1979-11-28
GB2037517B (en) 1983-02-09
IT1127646B (it) 1986-05-21
DE2948302A1 (de) 1980-06-12
JPS5939922B2 (ja) 1984-09-27
FI793687A (fi) 1980-05-31
FI70351B (fi) 1986-02-28
FR2443165B1 (fr) 1984-01-20
DE2948302C2 (fr) 1987-10-15
JPS5578619A (en) 1980-06-13

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Legal Events

Date Code Title Description
ST Notification of lapse