GB2173661B - Superheterodyne television tuner - Google Patents
Superheterodyne television tunerInfo
- 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
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
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)
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)
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 |
-
1986
- 1986-03-20 GB GB8606962A patent/GB2173661B/en not_active Expired
- 1986-03-20 DE DE19863609349 patent/DE3609349C3/en not_active Expired - Lifetime
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 |