FR1578278A - - Google Patents

Info

Publication number
FR1578278A
FR1578278A FR160273A FR1578278DA FR1578278A FR 1578278 A FR1578278 A FR 1578278A FR 160273 A FR160273 A FR 160273A FR 1578278D A FR1578278D A FR 1578278DA FR 1578278 A FR1578278 A FR 1578278A
Authority
FR
France
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
FR160273A
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
Priority claimed from JP2249468A external-priority patent/JPS4830771B1/ja
Priority claimed from JP2249568A external-priority patent/JPS5125687B1/ja
Priority claimed from JP2303668A external-priority patent/JPS494767B1/ja
Application filed filed Critical
Application granted granted Critical
Publication of FR1578278A publication Critical patent/FR1578278A/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
    • H03J7/02—Automatic frequency control
    • H03J7/026—Means preventing a wrong working of the automatic frequency correction in case of fading or bad signal/noise ratio
    • 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
FR160273A 1967-07-25 1968-07-23 Expired FR1578278A (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP4828067 1967-07-25
JP4827967 1967-07-25
JP2249468A JPS4830771B1 (fr) 1968-04-03 1968-04-03
JP2249268 1968-04-03
JP2248968 1968-04-03
JP2249568A JPS5125687B1 (fr) 1968-04-03 1968-04-03
JP2303668A JPS494767B1 (fr) 1968-04-04 1968-04-04
JP2301068 1968-04-05

Publications (1)

Publication Number Publication Date
FR1578278A true FR1578278A (fr) 1969-08-14

Family

ID=27571938

Family Applications (1)

Application Number Title Priority Date Filing Date
FR160273A Expired FR1578278A (fr) 1967-07-25 1968-07-23

Country Status (4)

Country Link
US (1) US3611152A (fr)
DE (1) DE1766819B2 (fr)
FR (1) FR1578278A (fr)
GB (1) GB1241562A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846707A (en) * 1970-11-04 1974-11-05 Matsushita Electric Co Ltd Channel selection device
US3893032A (en) * 1970-12-28 1975-07-01 Matsushita Electric Ind Co Ltd Channel selection device
US3714580A (en) * 1971-01-07 1973-01-30 Magnavox Co Electronic search tuning system
US3798553A (en) * 1971-02-09 1974-03-19 Matsushita Electric Ind Co Ltd Frequency sweep device having two alternately swept oscillators
NL165013C (nl) * 1971-02-19 1981-02-16 Matsushita Electric Ind Co Ltd Spanningsgeheugeninrichting en automatische afsteminrichting voorzien van een diode met variabele capaciteit in een resonantieketen.
GB1342809A (en) * 1971-03-31 1974-01-10 Autovox Spa Tuner control device for electromagnetic wave receivers
NL166828C (nl) * 1971-05-08 1981-09-15 Matsushita Electric Ind Co Ltd Automatische kanaalkies-inrichting.
GB1420320A (en) * 1971-12-08 1976-01-07 Matsushita Electric Ind Co Ltd Tuning apparatus
US3822405A (en) * 1971-12-10 1974-07-02 Matsushita Electric Ind Co Ltd Channel selecting apparatus
NL7313625A (fr) * 1973-10-04 1973-12-27
US4004233A (en) * 1974-03-22 1977-01-18 Matsushita Electric Industrial Co., Ltd. Search type tuning device
US3971991A (en) * 1974-09-04 1976-07-27 Zenith Radio Corporation Television tuning system with varactor malfunction detection
US5668828A (en) * 1992-05-08 1997-09-16 Sanconix, Inc. Enhanced frequency agile radio
KR100556862B1 (ko) * 2003-06-24 2006-03-10 엘지전자 주식회사 이동 통신단말기의 주파수 자동 조절 장치

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163822A (en) * 1960-12-30 1964-12-29 Rca Corp Automatic frequency control system utilizing a reference oscillator
FR1356380A (fr) * 1963-02-13 1964-03-27 Csf Dispositif de commande automatique de fréquence
US3473128A (en) * 1966-12-20 1969-10-14 Vari L Co Inc Automatic ganging of superheterodyne radio frequency stages

Also Published As

Publication number Publication date
GB1241562A (en) 1971-08-04
DE1766819B2 (de) 1973-05-30
DE1766819A1 (de) 1972-03-16
US3611152A (en) 1971-10-05

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Legal Events

Date Code Title Description
ST Notification of lapse