BR7703778A - Sistema de sintonia sintetizador de frequencia - Google Patents
Sistema de sintonia sintetizador de frequenciaInfo
- Publication number
- BR7703778A BR7703778A BR7703778A BR7703778A BR7703778A BR 7703778 A BR7703778 A BR 7703778A BR 7703778 A BR7703778 A BR 7703778A BR 7703778 A BR7703778 A BR 7703778A BR 7703778 A BR7703778 A BR 7703778A
- Authority
- BR
- Brazil
- Prior art keywords
- frequency synthesizer
- system frequency
- tuning system
- tuning
- synthesizer
- Prior art date
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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/14—Automatic detuning arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Noise Elimination (AREA)
- Superheterodyne Receivers (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/695,855 US4038689A (en) | 1976-06-14 | 1976-06-14 | Frequency synthesizer tuning system with manual fine tuning control |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7703778A true BR7703778A (pt) | 1978-05-23 |
Family
ID=24794724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7703778A BR7703778A (pt) | 1976-06-14 | 1977-06-10 | Sistema de sintonia sintetizador de frequencia |
Country Status (3)
Country | Link |
---|---|
US (1) | US4038689A (pt) |
JP (1) | JPS6057731B2 (pt) |
BR (1) | BR7703778A (pt) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1047373B (it) * | 1975-10-16 | 1980-09-10 | Indesit | Disposizione per selezionare una frequenza ricevibile in un ricevitore di segnali |
US4422096A (en) * | 1975-11-14 | 1983-12-20 | Rca Corporation | Television frequency synthesizer for nonstandard frequency carriers |
JPS5810015B2 (ja) * | 1975-12-24 | 1983-02-23 | ソニー株式会社 | センキヨクソウチ |
FR2422171A2 (fr) * | 1975-12-30 | 1979-11-02 | Jules Jacques | Dispositif automatique de synchronisation de l'accord d'un recepteur de mesure selectif sur la frequence d'un signal alternatif et appareil de mesure de niveau de signaux alternatifs comportant ledit dispositif |
US4128849A (en) * | 1976-05-24 | 1978-12-05 | Admiral Corporation | Selectively coupled synthesizer for tuner of TV receiver |
US4184121A (en) * | 1976-08-30 | 1980-01-15 | Zenith Radio Corporation | Wide window tuning system |
CA1089017A (en) * | 1976-12-16 | 1980-11-04 | Norio Yamashita | Channel selecting apparatus in receiver |
DE2720170C2 (de) * | 1977-05-05 | 1982-05-13 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Abstimmschaltung für Hochfrequenz- Empfangsgeräte mit Restseitenbandmodulation, insbesondere für Fernsehempfänger |
US4156199A (en) * | 1977-05-12 | 1979-05-22 | Zenith Radio Corporation | Apparatus for shifting a tuning window |
NL179435C (nl) * | 1977-10-26 | 1986-09-01 | Philips Nv | Ontvanger met een frequentiesynthese-schakeling. |
US4190862A (en) * | 1978-02-06 | 1980-02-26 | Zenith Radio Corporation | Video carrier recognition system |
US4300165A (en) * | 1978-04-07 | 1981-11-10 | General Electric Company | Dual mode automatic fine tuning |
JPS5518119A (en) * | 1978-07-26 | 1980-02-08 | Hitachi Ltd | Automatic tuning circuit |
JPS5580928A (en) * | 1978-12-15 | 1980-06-18 | Sony Corp | Channel selection device |
US4397038A (en) * | 1979-03-26 | 1983-08-02 | Matsushita Electric Corporation Of America | Frequency synthesizer tuning system for television receivers |
US4352208A (en) * | 1980-03-04 | 1982-09-28 | Motorola, Inc. | Automatic IF selectivity for radio receiver system |
US4398220A (en) * | 1980-09-05 | 1983-08-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Circuit for detecting the operational state of a television receiver |
US4387400A (en) * | 1981-05-11 | 1983-06-07 | Zenith Radio Corporation | Tuning system for a television receiver |
JPS5957534A (ja) * | 1982-09-27 | 1984-04-03 | Alps Electric Co Ltd | 衛星放送用受信器の屋内ユニツト |
JP2685744B2 (ja) * | 1986-08-20 | 1997-12-03 | 三菱電機株式会社 | テレビジヨン信号選局装置 |
US4977613A (en) * | 1988-10-17 | 1990-12-11 | Motorola, Inc. | Fine tuning frequency synthesizer with feedback loop for frequency control systems |
JP3319491B2 (ja) * | 1995-01-19 | 2002-09-03 | 船井電機株式会社 | 放送波チャンネル同調方法 |
US5986720A (en) * | 1996-05-09 | 1999-11-16 | Matsushita Electric Industrial Co., Ltd. | Mobile television receiver |
US8085097B2 (en) * | 2008-05-06 | 2011-12-27 | Hittite Microwave Corporation | Integrated ramp, sweep fractional frequency synthesizer on an integrated circuit chip |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3949158A (en) * | 1974-12-31 | 1976-04-06 | Quasar Electronics Corporation | Wide band aft circuit for television receiver |
US3980951A (en) * | 1975-08-13 | 1976-09-14 | Fairchild Camera And Instrument Corporation | Electronic tuning control system for television |
-
1976
- 1976-06-14 US US05/695,855 patent/US4038689A/en not_active Expired - Lifetime
-
1977
- 1977-05-25 JP JP52061514A patent/JPS6057731B2/ja not_active Expired
- 1977-06-10 BR BR7703778A patent/BR7703778A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
JPS5310921A (en) | 1978-01-31 |
US4038689A (en) | 1977-07-26 |
JPS6057731B2 (ja) | 1985-12-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR7703778A (pt) | Sistema de sintonia sintetizador de frequencia | |
AT365020B (de) | Funksystem | |
NL7807162A (nl) | Radiofrequentie-oscillator-modulator. | |
BR7704727A (pt) | Aperfeicoamento em sistema de sintonia sintetizador de frequencia com busca de sinal | |
IT8025606A0 (it) | Sintetizzatore di frequenza. | |
NL7702750A (nl) | Frequentievermenigvuldiger. | |
IT1086613B (it) | Sistema per modulare la frequenza | |
IT7926611A0 (it) | Complesso sintetizzatore di frequenza. | |
NL7811790A (nl) | Eentrapskwartsoscillator. | |
FR2352391A1 (fr) | Magnetron accordable | |
NL7612700A (nl) | Antenne-afsteminrichting. | |
NL188379C (nl) | Elektronisch afstemsysteem. | |
FI782704A (fi) | Foerfarande foer framstaellning av plaotformiga verkstyckhalvfabrikater | |
SE421728B (sv) | Digistalstyrd oscillator | |
BR7505272A (pt) | Sistema de sintonia | |
NO781000L (no) | Anordning for avstemning av resonatorer | |
AT366857B (de) | Frequenzdiskriminator | |
NL7609401A (nl) | Radiofrequentie-afsteminrichting. | |
JPS535556A (en) | Frequency synthesizer | |
JPS5350649A (en) | Frequency synthesizer | |
DK83277A (da) | Staniliseret oscillator | |
JPS5336451A (en) | Frequency dividing system | |
FI811387L (fi) | Foerfarande foer framstaellning av en opak poroes fibrillstruktur | |
SE7708218L (sv) | Mottagare for talfrekvenssignaler | |
PL204459A1 (pl) | Uklad syntezatora czestotliwosci mikrofalowych |