GB1593296A - Heterodyne tuning circuits - Google Patents

Heterodyne tuning circuits Download PDF

Info

Publication number
GB1593296A
GB1593296A GB45372/77A GB4537277A GB1593296A GB 1593296 A GB1593296 A GB 1593296A GB 45372/77 A GB45372/77 A GB 45372/77A GB 4537277 A GB4537277 A GB 4537277A GB 1593296 A GB1593296 A GB 1593296A
Authority
GB
United Kingdom
Prior art keywords
signal
tuning
frequency
circuit
arrangement according
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
GB45372/77A
Other languages
English (en)
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.)
Licentia Patent Verwaltungs GmbH
Licentia Oy
Original Assignee
Licentia Patent Verwaltungs GmbH
Licentia Oy
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 Licentia Patent Verwaltungs GmbH, Licentia Oy filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1593296A publication Critical patent/GB1593296A/en
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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Television Receiver Circuits (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
GB45372/77A 1976-11-02 1977-11-01 Heterodyne tuning circuits Expired GB1593296A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2650305A DE2650305C3 (de) 1976-11-02 1976-11-02 Schaltungsanordnung fur einen automatischen Sendersuchlauf

Publications (1)

Publication Number Publication Date
GB1593296A true GB1593296A (en) 1981-07-15

Family

ID=5992320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45372/77A Expired GB1593296A (en) 1976-11-02 1977-11-01 Heterodyne tuning circuits

Country Status (7)

Country Link
JP (1) JPS5357705A (https=)
DE (1) DE2650305C3 (https=)
ES (1) ES463770A1 (https=)
FR (1) FR2369754A1 (https=)
GB (1) GB1593296A (https=)
IT (1) IT1087847B (https=)
SE (1) SE420969B (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2748997C2 (de) * 1977-11-02 1985-08-29 Telefunken electronic GmbH, 7100 Heilbronn Schaltungsanordnung für einen automatischen Sendersuchlauf und zur automatischen Scharfabstimmung für einen Überlagerungsempfänger
JPS593891B2 (ja) * 1979-01-17 1984-01-26 ソニー株式会社 受信検出回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2424613C3 (de) * 1974-05-21 1979-07-05 Texas Instruments Deutschland Gmbh, 8050 Freising Schaltungsanordnung zur automatischen Feinabstimmung eines Überlagerungsempfängers
US3949158A (en) * 1974-12-31 1976-04-06 Quasar Electronics Corporation Wide band aft circuit for television receiver

Also Published As

Publication number Publication date
DE2650305A1 (de) 1978-05-03
SE7712277L (sv) 1978-05-03
JPS5357705A (en) 1978-05-25
IT1087847B (it) 1985-06-04
ES463770A1 (es) 1978-06-16
SE420969B (sv) 1981-11-09
DE2650305C3 (de) 1980-11-20
FR2369754A1 (fr) 1978-05-26
FR2369754B1 (https=) 1982-12-10
DE2650305B2 (de) 1980-03-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee