GB2173661B - Superheterodyne television tuner - Google Patents

Superheterodyne television tuner

Info

Publication number
GB2173661B
GB2173661B GB8606962A GB8606962A GB2173661B GB 2173661 B GB2173661 B GB 2173661B GB 8606962 A GB8606962 A GB 8606962A GB 8606962 A GB8606962 A GB 8606962A GB 2173661 B GB2173661 B GB 2173661B
Authority
GB
United Kingdom
Prior art keywords
television tuner
superheterodyne television
superheterodyne
tuner
television
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
GB8606962A
Other versions
GB8606962D0 (en
GB2173661A (en
Inventor
Takeo Oishi
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 JP5769285A external-priority patent/JPS61216509A/en
Priority claimed from JP5769385A external-priority patent/JPS61216510A/en
Application filed by Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Publication of GB8606962D0 publication Critical patent/GB8606962D0/en
Publication of GB2173661A publication Critical patent/GB2173661A/en
Application granted granted Critical
Publication of GB2173661B publication Critical patent/GB2173661B/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
    • H03J7/02—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
    • H03J7/06—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 counters or frequency dividers
    • H03J7/065—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 counters or frequency dividers the counter or frequency divider being used in a phase locked loop
GB8606962A 1985-03-22 1986-03-20 Superheterodyne television tuner Expired GB2173661B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5769285A JPS61216509A (en) 1985-03-22 1985-03-22 Television tuner
JP5769385A JPS61216510A (en) 1985-03-22 1985-03-22 Television tuner

Publications (3)

Publication Number Publication Date
GB8606962D0 GB8606962D0 (en) 1986-04-23
GB2173661A GB2173661A (en) 1986-10-15
GB2173661B true GB2173661B (en) 1989-06-28

Family

ID=26398755

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8606962A Expired GB2173661B (en) 1985-03-22 1986-03-20 Superheterodyne television tuner

Country Status (2)

Country Link
DE (1) DE3609349C3 (en)
GB (1) GB2173661B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019579C2 (en) * 1989-06-21 1997-04-24 Gold Star Co Circuit for processing video signals and automatic fine-tuning signals to match the respective broadcasting system
DE4011839C2 (en) * 1990-04-12 1999-02-25 Thomson Brandt Gmbh Circuit arrangement for the adjustment of HF filter circuits
GB2259418B (en) * 1991-09-05 1995-10-11 Jalco Co Ltd RF modulator
DE4217190C2 (en) * 1992-05-23 2003-05-08 Grundig Ag TV receiver with microcomputer controlled gain control
KR100242415B1 (en) * 1996-11-28 2000-02-01 윤종용 Second local osicillator
DE19939713A1 (en) * 1999-08-21 2001-03-01 Polytron Vertrieb Gmbh Regulating television control amplifier involves microcomputer control program deriving digital control value from digitized pulse amplitude, converting to analogue form for amplifier
US7660566B2 (en) * 2006-09-29 2010-02-09 Visteon Global Technologies, Inc. System for creating a programmable tuning voltage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115812A (en) * 1973-11-26 1978-09-19 Hitachi, Ltd. Automatic gain control circuit
JPS5429919A (en) * 1977-08-10 1979-03-06 Hitachi Ltd Video signal processing circuit
DE2814577A1 (en) * 1978-04-05 1979-10-11 Nordmende Radio receiver with microcomputer - generating control signals for input and main tuning circuits and controlling changeover
DE2834231A1 (en) * 1978-08-04 1980-02-28 Blaupunkt Werke Gmbh Synchronisation of oscillator with input circuit of superhet receiver - sorting control voltages for input circuit corresp. to those of oscillator
DE2854852C2 (en) * 1978-12-19 1985-02-07 Telefunken electronic GmbH, 7100 Heilbronn Electronic voting unit, in particular for television receivers
US4237490A (en) * 1979-03-16 1980-12-02 Rca Corporation Signal overload prevention circuit
DE3242965C1 (en) * 1982-11-20 1984-05-30 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Tuning unit for telecommunications equipment
DE3406150C3 (en) * 1984-02-21 1997-04-03 Telefunken Microelectron Method for adjusting a high-frequency input circuit and control circuit for carrying out the method

Also Published As

Publication number Publication date
DE3609349C2 (en) 1994-09-15
DE3609349C3 (en) 1994-09-15
DE3609349A1 (en) 1986-10-02
GB8606962D0 (en) 1986-04-23
GB2173661A (en) 1986-10-15

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20060319