CA1044765A - Broadcast receiver - Google Patents

Broadcast receiver

Info

Publication number
CA1044765A
CA1044765A CA189,731A CA189731A CA1044765A CA 1044765 A CA1044765 A CA 1044765A CA 189731 A CA189731 A CA 189731A CA 1044765 A CA1044765 A CA 1044765A
Authority
CA
Canada
Prior art keywords
output
counter
signal
terminal
frequency
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
CA189,731A
Other languages
English (en)
French (fr)
Other versions
CA189731S (en
Inventor
Osamu Hamada
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
Priority to CA312,726A priority Critical patent/CA1052447A/en
Application granted granted Critical
Publication of CA1044765A publication Critical patent/CA1044765A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous 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
    • H03J5/02Discontinuous 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
    • H03J5/0245Discontinuous 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
    • H03J5/0272Discontinuous 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
    • H03J5/0281Discontinuous 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/34Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/348Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18Automatic scanning over a band of frequencies
    • H03J7/20Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28Automatic 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
    • H03J7/285Automatic 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)
CA189,731A 1973-01-09 1974-01-08 Broadcast receiver Expired CA1044765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA312,726A CA1052447A (en) 1973-01-09 1978-10-05 Broadcast receiver

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA1044765A true CA1044765A (en) 1978-12-19

Family

ID=11610987

Family Applications (1)

Application Number Title Priority Date Filing Date
CA189,731A Expired CA1044765A (en) 1973-01-09 1974-01-08 Broadcast receiver

Country Status (7)

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

Families Citing this family (9)

* 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 (xx) * 1978-04-07 1979-10-16
IT1107168B (it) 1978-06-26 1985-11-25 Indesit Perfezionamenti a dispositivi pr la selezione di un segnale
NL184594C (nl) * 1979-09-04 1989-09-01 Philips Nv Radio-ontvanger voorzien van een frequentie gesleutelde lus met audiofrequente terugkoppeling, en een stomschakeling.

Also Published As

Publication number Publication date
NL7400316A (xx) 1974-07-11
GB1445031A (en) 1976-08-04
FR2332659A1 (fr) 1977-06-17
FR2332659B1 (xx) 1978-03-24
DE2400943A1 (de) 1975-02-27
JPS4992914A (xx) 1974-09-04
NL178554C (nl) 1986-04-01
DE2400943C2 (de) 1984-02-23
JPS5627024B2 (xx) 1981-06-22
IT1017534B (it) 1977-08-10
NL178554B (nl) 1985-11-01

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