GB1445031A - Broadcast receivers - Google Patents

Broadcast receivers

Info

Publication number
GB1445031A
GB1445031A GB28174A GB28174A GB1445031A GB 1445031 A GB1445031 A GB 1445031A GB 28174 A GB28174 A GB 28174A GB 28174 A GB28174 A GB 28174A GB 1445031 A GB1445031 A GB 1445031A
Authority
GB
United Kingdom
Prior art keywords
output
counter
frequency
memory
station
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
GB28174A
Other languages
English (en)
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of GB1445031A publication Critical patent/GB1445031A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present
    • H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
    • H03J7/285—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Noise Elimination (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
GB28174A 1973-01-09 1974-01-03 Broadcast receivers Expired GB1445031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP543173A JPS5627024B2 (enrdf_load_stackoverflow) 1973-01-09 1973-01-09

Publications (1)

Publication Number Publication Date
GB1445031A true GB1445031A (en) 1976-08-04

Family

ID=11610987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28174A Expired GB1445031A (en) 1973-01-09 1974-01-03 Broadcast receivers

Country Status (7)

Country Link
JP (1) JPS5627024B2 (enrdf_load_stackoverflow)
CA (1) CA1044765A (enrdf_load_stackoverflow)
DE (1) DE2400943C2 (enrdf_load_stackoverflow)
FR (1) FR2332659A1 (enrdf_load_stackoverflow)
GB (1) GB1445031A (enrdf_load_stackoverflow)
IT (1) IT1017534B (enrdf_load_stackoverflow)
NL (1) NL178554C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156850A (en) 1977-08-29 1979-05-29 Rca Corporation Display system for facilitating the setup of a tuning system
US4313213A (en) 1978-06-26 1982-01-26 Italiana S.P.A. Indesit Industria Elettrodomestici Computer controlled television receiver with display
RU2413965C2 (ru) * 2009-05-27 2011-03-10 Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" Способ формирования управляющего сигнала в релейных системах с зоной нечувствительности и зоной непрерывного управления и релейный регулятор для его реализации

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517389C2 (de) * 1975-04-19 1982-09-23 Blaupunkt-Werke Gmbh, 3200 Hildesheim Anordnung zum Umschalten der Empfindlichkeit von Empfangsgeräten
IT1050947B (it) * 1975-11-17 1981-03-20 Indesit Circuito di selezione di segnali
US4207529A (en) * 1976-04-08 1980-06-10 Fujitsu Ten Limited Radio receiver
JPS54102814A (en) * 1978-01-30 1979-08-13 Sony Corp Synthesizer receiver
DE2804590A1 (de) * 1978-02-03 1979-08-09 Licentia Gmbh Schalteranordnung zur stummschaltung in einem rundfunkempfaenger
JPS54125911A (en) * 1978-03-24 1979-09-29 Japan Radio Co Ltd Automatic scan receiver
JPS54148417U (enrdf_load_stackoverflow) * 1978-04-07 1979-10-16
NL184594C (nl) * 1979-09-04 1989-09-01 Philips Nv Radio-ontvanger voorzien van een frequentie gesleutelde lus met audiofrequente terugkoppeling, en een stomschakeling.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156850A (en) 1977-08-29 1979-05-29 Rca Corporation Display system for facilitating the setup of a tuning system
US4313213A (en) 1978-06-26 1982-01-26 Italiana S.P.A. Indesit Industria Elettrodomestici Computer controlled television receiver with display
RU2413965C2 (ru) * 2009-05-27 2011-03-10 Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" Способ формирования управляющего сигнала в релейных системах с зоной нечувствительности и зоной непрерывного управления и релейный регулятор для его реализации

Also Published As

Publication number Publication date
FR2332659B1 (enrdf_load_stackoverflow) 1978-03-24
DE2400943A1 (de) 1975-02-27
NL178554B (nl) 1985-11-01
IT1017534B (it) 1977-08-10
FR2332659A1 (fr) 1977-06-17
DE2400943C2 (de) 1984-02-23
NL178554C (nl) 1986-04-01
NL7400316A (enrdf_load_stackoverflow) 1974-07-11
CA1044765A (en) 1978-12-19
JPS5627024B2 (enrdf_load_stackoverflow) 1981-06-22
JPS4992914A (enrdf_load_stackoverflow) 1974-09-04

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Legal Events

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

Effective date: 19940102