NL185743B - Digitale afstemschakeling voor het afstemmen van een televisie-ontvanger op een geselecteerde frequentie. - Google Patents

Digitale afstemschakeling voor het afstemmen van een televisie-ontvanger op een geselecteerde frequentie.

Info

Publication number
NL185743B
NL185743B NLAANVRAGE7611453,A NL7611453A NL185743B NL 185743 B NL185743 B NL 185743B NL 7611453 A NL7611453 A NL 7611453A NL 185743 B NL185743 B NL 185743B
Authority
NL
Netherlands
Prior art keywords
tuning
television receiver
selected frequency
digital
tuning circuit
Prior art date
Application number
NLAANVRAGE7611453,A
Other languages
English (en)
Other versions
NL7611453A (nl
NL185743C (nl
Original Assignee
Sisvel Spa
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 Sisvel Spa filed Critical Sisvel Spa
Publication of NL7611453A publication Critical patent/NL7611453A/nl
Publication of NL185743B publication Critical patent/NL185743B/nl
Application granted granted Critical
Publication of NL185743C publication Critical patent/NL185743C/nl

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • 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
    • H03J5/0281—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 the digital values being held in an auxiliary non erasable memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
NLAANVRAGE7611453,A 1975-10-16 1976-10-15 Digitale afstemschakeling voor het afstemmen van een televisie-ontvanger op een geselecteerde frequentie. NL185743C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69579/75A IT1047373B (it) 1975-10-16 1975-10-16 Disposizione per selezionare una frequenza ricevibile in un ricevitore di segnali

Publications (3)

Publication Number Publication Date
NL7611453A NL7611453A (nl) 1977-04-19
NL185743B true NL185743B (nl) 1990-02-01
NL185743C NL185743C (nl) 1990-07-02

Family

ID=11312422

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7611453,A NL185743C (nl) 1975-10-16 1976-10-15 Digitale afstemschakeling voor het afstemmen van een televisie-ontvanger op een geselecteerde frequentie.

Country Status (6)

Country Link
US (1) US4355416A (nl)
DE (1) DE2645833C2 (nl)
FR (1) FR2328324A1 (nl)
GB (2) GB1538294A (nl)
IT (1) IT1047373B (nl)
NL (1) NL185743C (nl)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1050947B (it) * 1975-11-17 1981-03-20 Indesit Circuito di selezione di segnali
JPS5946129B2 (ja) * 1976-04-05 1984-11-10 ソニー株式会社 選局装置
GB2002188B (en) * 1977-06-30 1982-03-24 Pioneer Electronic Corp Preset state indicating unit in an electronic type receiver
IT1091632B (it) * 1977-12-30 1985-07-06 Indesit Disposizione circuitale per sintonizzare un segnale tra una pluralita di segnali radioelettrici
DE2906059A1 (de) * 1978-02-22 1979-08-30 Plessey Handel Investment Ag Frequenzsynthese-steuersystem
IT1107168B (it) 1978-06-26 1985-11-25 Indesit Perfezionamenti a dispositivi pr la selezione di un segnale
IT1159686B (it) * 1978-05-22 1987-03-04 Indesit Televisore
IT1159717B (it) * 1978-06-08 1987-03-04 Indesit Perfezionamenti a dispositivi di selezione di segnali
JPS5531391A (en) * 1978-08-28 1980-03-05 Sanyo Electric Co Ltd Receiver
DE2966791D1 (en) * 1978-08-28 1984-04-19 Sanyo Electric Co Circuit for controlling a receiving frequency and a channel display in a superheterodyne receiver
JPS598966B2 (ja) * 1979-04-10 1984-02-28 株式会社東芝 テレビジヨン受像機の制御装置
FR2483704A1 (fr) * 1980-06-03 1981-12-04 Thomson Csf Dispositif de prepositionnement de frequence pour synthetiseur indirect de frequence et synthetiseur comportant un tel dispositif
GB2124047A (en) * 1982-07-10 1984-02-08 Plessey Co Plc Frequency synthesiser
GB2155263A (en) * 1984-03-02 1985-09-18 Philips Electronic Associated Frequency synthesised multichannel radio apparatus
JPH0198100A (ja) * 1987-10-09 1989-04-17 Japan Radio Co Ltd Ｍｌｓ受信機
DE3825427A1 (de) * 1988-07-27 1990-02-01 Grundig Emv Anordnung zur programmanwahl bei empfangsgeraeten der unterhaltungselektronik
US5045947A (en) * 1989-05-31 1991-09-03 Jack Beery Television receiver having memory control for tune-by-label feature
US5551071A (en) * 1994-02-15 1996-08-27 Uniden Corp. Channel sorting scanning receiver
US5483684A (en) * 1994-03-03 1996-01-09 Uniden America Corporation Automatic frequency search and storage method
US5465402A (en) * 1994-03-23 1995-11-07 Uniden America Corp. Automatic frequency transfer and storage method
FR2751809A1 (fr) * 1996-07-24 1998-01-30 Philips Electronics Nv Dispositif de selection de frequence muni d'un detecteur de verrouillage
JP3399347B2 (ja) * 1998-03-05 2003-04-21 松下電器産業株式会社 録画再生装置
GB2396526B (en) * 2002-12-19 2005-06-01 Motorola Inc Mobile station and method for selecting a radio frequency for call set-up

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622913A (en) * 1969-10-29 1971-11-23 Rca Corp Frequency modulated phase-locked oscillator having a low- and high-frequency response
US3657661A (en) * 1970-06-16 1972-04-18 Itt Fm demodulator system
JPS555729B2 (nl) * 1971-11-29 1980-02-08
US3961261A (en) * 1974-03-14 1976-06-01 Tennelec, Inc. Crystalless scanning radio receiver
US3883807A (en) * 1974-05-30 1975-05-13 Motorola Inc Tuning control system
US3946148A (en) * 1974-10-03 1976-03-23 Zenith Radio Corporation Television receiver operable in exact or extended range tuning modes
US3983484A (en) * 1974-12-06 1976-09-28 Nihon Dengyo Co., Ltd. Multichannel signal transmitting and receiving apparatus
US4000476A (en) * 1974-12-19 1976-12-28 Digital Communications Corporation Phase locked loop with circuit for preventing sidelock
JPS51117510A (en) * 1975-04-07 1976-10-15 Shintou Denki Kk Double superheterodyne receiver
IT1036497B (it) * 1975-07-11 1979-10-30 Indesit Circuito selezionatore di emittente in un ricevitore di segnali
US3980951A (en) * 1975-08-13 1976-09-14 Fairchild Camera And Instrument Corporation Electronic tuning control system for television
GB1518712A (en) * 1975-08-28 1978-07-26 Sony Corp Channel selecting apparatus
US4025953A (en) * 1975-11-26 1977-05-24 Quasar Electronics Corporation Frequency synthesizer tuning system for television receivers
US3988696A (en) * 1975-11-28 1976-10-26 The Bendix Corporation Phase lock detector for digital frequency synthesizer
US4038689A (en) * 1976-06-14 1977-07-26 Matsushita Electric Corporation Of America Frequency synthesizer tuning system with manual fine tuning control

Also Published As

Publication number Publication date
NL7611453A (nl) 1977-04-19
GB1538295A (en) 1979-01-17
DE2645833C2 (de) 1987-01-29
US4355416A (en) 1982-10-19
GB1538294A (en) 1979-01-17
DE2645833A1 (de) 1977-04-21
FR2328324A1 (fr) 1977-05-13
FR2328324B1 (nl) 1982-05-07
NL185743C (nl) 1990-07-02
IT1047373B (it) 1980-09-10

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: S.I.SV.EL. S.P.A. TE NONE. SOCIETA ITALIANA PER LO

V4 Discontinued because of reaching the maximum lifetime of a patent

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