FR2401571B1 - Appareil automatique de selection de canaux pour recepteur de television ou de radiodiffusion - Google Patents

Appareil automatique de selection de canaux pour recepteur de television ou de radiodiffusion

Info

Publication number
FR2401571B1
FR2401571B1 FR7824653A FR7824653A FR2401571B1 FR 2401571 B1 FR2401571 B1 FR 2401571B1 FR 7824653 A FR7824653 A FR 7824653A FR 7824653 A FR7824653 A FR 7824653A FR 2401571 B1 FR2401571 B1 FR 2401571B1
Authority
FR
France
Prior art keywords
television
channel selection
broadcasting receiver
selection apparatus
automatic channel
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
FR7824653A
Other languages
English (en)
Other versions
FR2401571A1 (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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of FR2401571A1 publication Critical patent/FR2401571A1/fr
Application granted granted Critical
Publication of FR2401571B1 publication Critical patent/FR2401571B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
    • 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
    • H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
FR7824653A 1977-08-26 1978-08-25 Appareil automatique de selection de canaux pour recepteur de television ou de radiodiffusion Expired FR2401571B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52101750A JPS5944805B2 (ja) 1977-08-26 1977-08-26 自動選局装置

Publications (2)

Publication Number Publication Date
FR2401571A1 FR2401571A1 (fr) 1979-03-23
FR2401571B1 true FR2401571B1 (fr) 1985-11-22

Family

ID=14308906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824653A Expired FR2401571B1 (fr) 1977-08-26 1978-08-25 Appareil automatique de selection de canaux pour recepteur de television ou de radiodiffusion

Country Status (5)

Country Link
US (1) US4232397A (fr)
JP (1) JPS5944805B2 (fr)
DE (1) DE2837243A1 (fr)
FR (1) FR2401571B1 (fr)
GB (1) GB2003349B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912043B2 (ja) * 1979-07-14 1984-03-21 株式会社日立製作所 選局装置
JPS6034866B2 (ja) * 1980-03-25 1985-08-10 株式会社日立製作所 選局装置
JPH0666707B2 (ja) * 1985-10-21 1994-08-24 ソニー株式会社 受信機
JPH0361007U (fr) * 1989-10-18 1991-06-14

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL166828C (nl) * 1971-05-08 1981-09-15 Matsushita Electric Ind Co Ltd Automatische kanaalkies-inrichting.
US3787612A (en) * 1972-07-03 1974-01-22 Zenith Radio Corp Signal processing system for television receiver having acoustic surface wave devices for improved tuning and video demodulation
US3936753A (en) * 1974-07-12 1976-02-03 Martin Marietta Corporation Digital automatic frequency control circuit
DE2437974C3 (de) * 1974-08-07 1979-04-26 Texas Instruments Deutschland Gmbh, 8050 Freising Kanalsuch- und Kanalwählanordnung
US3962640A (en) * 1974-09-09 1976-06-08 Texas Instruments Incorporated Frequency selection and control
US3973205A (en) * 1974-10-03 1976-08-03 Zenith Radio Corporation Television tuning system indicator
DE2610183A1 (de) * 1975-03-12 1976-09-23 Murata Manufacturing Co Wellenfilter mit akustischer oberflaechenleitung
DE2556486C3 (de) * 1975-12-16 1981-03-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Abstimmschaltung für Hochfrequenzempfangsgeräte
US4126836A (en) * 1977-03-30 1978-11-21 Rca Corporation Balanced capacitance charge transfer device

Also Published As

Publication number Publication date
GB2003349B (en) 1982-06-30
FR2401571A1 (fr) 1979-03-23
DE2837243A1 (de) 1979-03-01
US4232397A (en) 1980-11-04
GB2003349A (en) 1979-03-07
JPS5436101A (en) 1979-03-16
JPS5944805B2 (ja) 1984-11-01

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Legal Events

Date Code Title Description
ST Notification of lapse