DE2246972C3 - Abstimmeinrichtung für den UHF- und den VHF-Bereich - Google Patents

Abstimmeinrichtung für den UHF- und den VHF-Bereich

Info

Publication number
DE2246972C3
DE2246972C3 DE2246972A DE2246972A DE2246972C3 DE 2246972 C3 DE2246972 C3 DE 2246972C3 DE 2246972 A DE2246972 A DE 2246972A DE 2246972 A DE2246972 A DE 2246972A DE 2246972 C3 DE2246972 C3 DE 2246972C3
Authority
DE
Germany
Prior art keywords
voltage
frequency
vhf
uhf
tuning
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
DE2246972A
Other languages
German (de)
English (en)
Other versions
DE2246972B2 (de
DE2246972A1 (de
Inventor
Yoichi Toyonaka Osaka Sakamoto (Japan)
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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
Priority claimed from JP7487871A external-priority patent/JPS54606B2/ja
Priority claimed from JP7487971A external-priority patent/JPS543323B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE2246972A1 publication Critical patent/DE2246972A1/de
Publication of DE2246972B2 publication Critical patent/DE2246972B2/de
Application granted granted Critical
Publication of DE2246972C3 publication Critical patent/DE2246972C3/de
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
    • H03J7/04—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
    • H03J7/10—Modification of automatic frequency control sensitivity or linearising automatic frequency control operation

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)
DE2246972A 1971-09-25 1972-09-25 Abstimmeinrichtung für den UHF- und den VHF-Bereich Expired DE2246972C3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7487871A JPS54606B2 (https=) 1971-09-25 1971-09-25
JP7487971A JPS543323B2 (https=) 1971-09-25 1971-09-25

Publications (3)

Publication Number Publication Date
DE2246972A1 DE2246972A1 (de) 1973-04-05
DE2246972B2 DE2246972B2 (de) 1975-02-13
DE2246972C3 true DE2246972C3 (de) 1975-09-18

Family

ID=26416051

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2246972A Expired DE2246972C3 (de) 1971-09-25 1972-09-25 Abstimmeinrichtung für den UHF- und den VHF-Bereich

Country Status (6)

Country Link
US (1) US3824474A (https=)
CA (1) CA961937A (https=)
DE (1) DE2246972C3 (https=)
FR (1) FR2153466B1 (https=)
GB (1) GB1409798A (https=)
NL (1) NL163688C (https=)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074216A (en) * 1974-02-27 1978-02-14 U.S. Philips Corporation Receiver tuning circuit
JPS5229146B2 (https=) * 1974-12-18 1977-07-30
US4020420A (en) * 1975-03-20 1977-04-26 Matsushita Electric Industrial Co., Ltd. Electronic channel selector
GB1536040A (en) * 1975-12-26 1978-12-20 Sony Corp Automatic fine tuning circuit
JPS5287915A (en) * 1976-01-19 1977-07-22 Hitachi Ltd Afc unit for electronic tuner
JPS5563118A (en) * 1978-11-02 1980-05-13 Sony Corp Aft circuit
JP3141900B2 (ja) * 1992-04-07 2001-03-07 ソニー株式会社 Ａｆｃ回路及びそのｉｃ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693094A (en) * 1969-06-25 1972-09-19 Matsushita Electric Industrial Co Ltd Apparatus for superimposing an afc voltage on uhf and vhf tuning voltages for channel selection
US3619803A (en) * 1970-03-16 1971-11-09 Gte Sylvania Inc Temperature and voltage compensation for transistorized vco control circuit
US3697885A (en) * 1970-12-04 1972-10-10 Rca Corp Automatic frequency control circuits

Also Published As

Publication number Publication date
NL163688B (nl) 1980-04-15
NL163688C (nl) 1980-09-15
GB1409798A (en) 1975-10-15
FR2153466B1 (https=) 1977-07-29
NL7212893A (https=) 1973-03-27
FR2153466A1 (https=) 1973-05-04
CA961937A (en) 1975-01-28
DE2246972B2 (de) 1975-02-13
US3824474A (en) 1974-07-16
DE2246972A1 (de) 1973-04-05

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977