NL7908013A - Schakeling voor automatische fijne afstemming. - Google Patents
Schakeling voor automatische fijne afstemming. Download PDFInfo
- Publication number
- NL7908013A NL7908013A NL7908013A NL7908013A NL7908013A NL 7908013 A NL7908013 A NL 7908013A NL 7908013 A NL7908013 A NL 7908013A NL 7908013 A NL7908013 A NL 7908013A NL 7908013 A NL7908013 A NL 7908013A
- Authority
- NL
- Netherlands
- Prior art keywords
- fine tuning
- automatic fine
- voltage
- circuit
- transistor
- Prior art date
Links
- 238000007599 discharging Methods 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13548678A JPS5563118A (en) | 1978-11-02 | 1978-11-02 | Aft circuit |
| JP13548678 | 1978-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7908013A true NL7908013A (nl) | 1980-05-07 |
Family
ID=15152840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7908013A NL7908013A (nl) | 1978-11-02 | 1979-11-01 | Schakeling voor automatische fijne afstemming. |
Country Status (8)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4326296A (en) * | 1980-10-01 | 1982-04-20 | Magnavox Consumer Electronics Co. | Tuning system for a color television receiver having a varactor tuner |
| JPS586431U (ja) * | 1981-07-02 | 1983-01-17 | 三洋電機株式会社 | チユ−ナの誤動作防止回路 |
| JPS58114620A (ja) * | 1981-12-28 | 1983-07-08 | Matsushita Electric Ind Co Ltd | 自動探局選局装置 |
| DE3438286A1 (de) * | 1984-10-16 | 1986-04-17 | Hansen/Catito Elektronik, 1000 Berlin | Verfahren und schaltungsanordnung zum umsetzen frequenzmodulierter signale ueber mindestens eine zwischenfrequenz in niederfrequenzsignale |
| DE3606250A1 (de) * | 1986-02-24 | 1987-08-27 | Hansen Elektronic & Co | Verfahren und vorrichtung zum umsetzen frequenzmodulierter signale ueber mindestens eine zwischenfrequenz in niederfrequenzsignale |
| IT1221243B (it) * | 1988-01-28 | 1990-06-27 | Sgs Thomson Microelectronics | Generazione di un impulso di arresto di una procedura di ricerca automatica di una stazione emittente utilizzando un segnale afo prodotto da un sistema di controllo automatico di frequenza di un ricevitore |
| US4814887A (en) * | 1988-05-23 | 1989-03-21 | General Instrument Corporation | Automatic frequency control |
| US5842119A (en) * | 1993-02-05 | 1998-11-24 | Emerson; Harry Edwin | Radio scanner and display system |
| KR960004515B1 (ko) * | 1993-06-08 | 1996-04-06 | 엘지전자주식회사 | 티브이의 자동선국 인입범위 확장장치 및 그 방법 |
| AU8009594A (en) * | 1994-08-04 | 1996-03-04 | Harry Edwin Emerson | Radio scanner and display system |
| JP4462729B2 (ja) * | 2000-07-06 | 2010-05-12 | 株式会社ルネサステクノロジ | 映像中間周波処理装置 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3069637A (en) * | 1961-07-31 | 1962-12-18 | Jr Ralph M Seeley | Electronic signal seeking means having tuning reactance automatically controlled by difference between concurrent and delayed detector output |
| NL6811422A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1968-08-09 | 1970-02-11 | ||
| GB1409798A (en) * | 1971-09-25 | 1975-10-15 | Matsushita Electric Ind Co Ltd | Frequency control arrangements |
| NL7215429A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-11-15 | 1974-05-17 | ||
| JPS5325444B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-01-23 | 1978-07-27 | ||
| DE2333851A1 (de) * | 1973-07-03 | 1975-01-23 | Standard Elektrik Lorenz Ag | Verfahren und anordnungen zur selbsttaetigen nachregelung der mit einer abstimmanordnunggeingestellten oszillatorfrequenz eines ueberlagerungsempfangsteils einer bild und/oder tonwiedergabeanordnung |
| NL7313625A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-10-04 | 1973-12-27 | ||
| US3939427A (en) * | 1974-08-05 | 1976-02-17 | Quasar Electronics Corporation | Automatic fine tuning defeat circuit |
| US3987399A (en) * | 1974-09-11 | 1976-10-19 | Pioneer Electronic Corporation | Radio receiver |
| JPS528717A (en) * | 1975-07-10 | 1977-01-22 | Toshiba Corp | Automatic channel selecteor |
| US4005256A (en) * | 1975-11-03 | 1977-01-25 | Gte Sylvania Incorporated | AFC circuit |
| JPS5811131B2 (ja) * | 1975-11-22 | 1983-03-01 | ソニー株式会社 | センキヨクソウチ |
| GB1536040A (en) * | 1975-12-26 | 1978-12-20 | Sony Corp | Automatic fine tuning circuit |
-
1978
- 1978-11-02 JP JP13548678A patent/JPS5563118A/ja active Granted
-
1979
- 1979-10-25 CA CA000338457A patent/CA1135884A/en not_active Expired
- 1979-10-25 AU AU52181/79A patent/AU534324B2/en not_active Ceased
- 1979-10-29 GB GB7937412A patent/GB2035737B/en not_active Expired
- 1979-10-29 US US06/088,852 patent/US4263675A/en not_active Expired - Lifetime
- 1979-10-30 FR FR7926898A patent/FR2440655B1/fr not_active Expired
- 1979-11-01 NL NL7908013A patent/NL7908013A/nl not_active Application Discontinuation
- 1979-11-02 DE DE19792944258 patent/DE2944258A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| AU534324B2 (en) | 1984-01-19 |
| DE2944258A1 (de) | 1980-05-08 |
| GB2035737B (en) | 1982-12-22 |
| AU5218179A (en) | 1980-05-15 |
| US4263675A (en) | 1981-04-21 |
| CA1135884A (en) | 1982-11-16 |
| GB2035737A (en) | 1980-06-18 |
| JPS576286B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1982-02-04 |
| FR2440655A1 (fr) | 1980-05-30 |
| FR2440655B1 (fr) | 1985-09-27 |
| JPS5563118A (en) | 1980-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed |