JPS5345252B2 - - Google Patents

Info

Publication number
JPS5345252B2
JPS5345252B2 JP14704774A JP14704774A JPS5345252B2 JP S5345252 B2 JPS5345252 B2 JP S5345252B2 JP 14704774 A JP14704774 A JP 14704774A JP 14704774 A JP14704774 A JP 14704774A JP S5345252 B2 JPS5345252 B2 JP S5345252B2
Authority
JP
Japan
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
JP14704774A
Other languages
Japanese (ja)
Other versions
JPS5171011A (en]
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
Priority to JP14704774A priority Critical patent/JPS5345252B2/ja
Priority to CA232,549A priority patent/CA1025138A/en
Priority to GB32525/75A priority patent/GB1511359A/en
Priority to US05/601,283 priority patent/US4008437A/en
Priority to DE2535305A priority patent/DE2535305C3/de
Priority to IT26383/75A priority patent/IT1042098B/it
Priority to FR7526248A priority patent/FR2310031A1/fr
Publication of JPS5171011A publication Critical patent/JPS5171011A/ja
Publication of JPS5345252B2 publication Critical patent/JPS5345252B2/ja
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
    • H03J7/24—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes
    • H03J7/26—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
JP14704774A 1974-12-17 1974-12-17 Expired JPS5345252B2 (en])

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP14704774A JPS5345252B2 (en]) 1974-12-17 1974-12-17
CA232,549A CA1025138A (en) 1974-12-17 1975-07-30 Automatic tuning apparatus
GB32525/75A GB1511359A (en) 1974-12-17 1975-08-04 Automatic electric tuning apparatus
US05/601,283 US4008437A (en) 1974-12-17 1975-08-04 Automatic tuning apparatus
DE2535305A DE2535305C3 (de) 1974-12-17 1975-08-07 Automatische Abstimmschaltung für Funkempfänger
IT26383/75A IT1042098B (it) 1974-12-17 1975-08-14 Apparecchiatura di sintonizzazione automatica impiegante un dispositi vo a reattanza variabile a tensione controllata
FR7526248A FR2310031A1 (fr) 1974-12-17 1975-08-26 Appareil d'accord automatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14704774A JPS5345252B2 (en]) 1974-12-17 1974-12-17

Publications (2)

Publication Number Publication Date
JPS5171011A JPS5171011A (en]) 1976-06-19
JPS5345252B2 true JPS5345252B2 (en]) 1978-12-05

Family

ID=15421293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14704774A Expired JPS5345252B2 (en]) 1974-12-17 1974-12-17

Country Status (7)

Country Link
US (1) US4008437A (en])
JP (1) JPS5345252B2 (en])
CA (1) CA1025138A (en])
DE (1) DE2535305C3 (en])
FR (1) FR2310031A1 (en])
GB (1) GB1511359A (en])
IT (1) IT1042098B (en])

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173815A (ja) * 1974-12-24 1976-06-26 Fujitsu Ten Ltd Jidodochojushinki
JPS5181611U (en]) * 1974-12-24 1976-06-30
US4245348A (en) * 1977-05-27 1981-01-13 General Research Of Electronics, Inc. Center frequency tuning system for radio-frequency signal receiver
JPS5456701A (en) * 1977-10-14 1979-05-08 Sanyo Electric Co Ltd Preset receiving device
JPS593891B2 (ja) * 1979-01-17 1984-01-26 ソニー株式会社 受信検出回路
JPS57171822A (en) * 1981-04-15 1982-10-22 Pioneer Electronic Corp Automatic channel selector of tuner
EP0341238B1 (en) * 1987-01-02 1993-12-08 Motorola, Inc. Automatic antenna tuning system for portable communication devices
CN115933237B (zh) * 2022-12-16 2024-07-09 业成科技（成都）有限公司 显示装置及其操作方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2042439A1 (de) * 1970-08-27 1972-03-02 Wachholz W Schaltungsanordnung zur automatischen Sendersuche und automatischen Scharfabstimmung in einem Hochfrequenzempfanger
GB1379759A (en) * 1970-12-07 1975-01-08 Matsushita Electric Ind Co Ltd Electrical tuning system
US3798553A (en) * 1971-02-09 1974-03-19 Matsushita Electric Ind Co Ltd Frequency sweep device having two alternately swept oscillators
CA1040331A (en) * 1972-11-09 1978-10-10 Takeo Fukuda Channel selection system for tv receiver set
CA1019855A (en) * 1973-06-08 1977-10-25 Yasuhiro Yamada Automatic tuning apparatus

Also Published As

Publication number Publication date
US4008437A (en) 1977-02-15
FR2310031A1 (fr) 1976-11-26
DE2535305B2 (de) 1979-08-09
FR2310031B1 (en]) 1978-04-07
DE2535305A1 (de) 1976-07-15
JPS5171011A (en]) 1976-06-19
GB1511359A (en) 1978-05-17
IT1042098B (it) 1980-01-30
DE2535305C3 (de) 1980-04-10
CA1025138A (en) 1978-01-24

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