NL179174C - Heterodyne ontvanger. - Google Patents

Heterodyne ontvanger.

Info

Publication number
NL179174C
NL179174C NLAANVRAGE7901954,A NL7901954A NL179174C NL 179174 C NL179174 C NL 179174C NL 7901954 A NL7901954 A NL 7901954A NL 179174 C NL179174 C NL 179174C
Authority
NL
Netherlands
Prior art keywords
heterodyne receiver
heterodyne
receiver
Prior art date
Application number
NLAANVRAGE7901954,A
Other languages
English (en)
Dutch (nl)
Other versions
NL179174B (nl
NL7901954A (nl
Original Assignee
Sanyo Electric Co
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
Priority claimed from JP3316478U external-priority patent/JPS5822349Y2/ja
Priority claimed from JP2969378A external-priority patent/JPS5823020B2/ja
Application filed by Sanyo Electric Co filed Critical Sanyo Electric Co
Publication of NL7901954A publication Critical patent/NL7901954A/xx
Publication of NL179174B publication Critical patent/NL179174B/xx
Application granted granted Critical
Publication of NL179174C publication Critical patent/NL179174C/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/02—Indicating arrangements
    • H03J1/04—Indicating arrangements with optical indicating means
    • H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
    • H03J1/047—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's
    • H03J1/048—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's with digital indication
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
NLAANVRAGE7901954,A 1978-03-13 1979-03-12 Heterodyne ontvanger. NL179174C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3316478U JPS5822349Y2 (ja) 1978-03-13 1978-03-13 受信機の受信周波数表示回路
JP2969378A JPS5823020B2 (ja) 1978-03-13 1978-03-13 ラジオ受信機の受信周波数表示回路

Publications (3)

Publication Number Publication Date
NL7901954A NL7901954A (nl) 1979-09-17
NL179174B NL179174B (nl) 1986-02-17
NL179174C true NL179174C (nl) 1986-07-16

Family

ID=26367929

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7901954,A NL179174C (nl) 1978-03-13 1979-03-12 Heterodyne ontvanger.

Country Status (4)

Country Link
US (1) US4247950A (xx)
DE (1) DE2909784C2 (xx)
FR (1) FR2420247B1 (xx)
NL (1) NL179174C (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618782A1 (de) * 1986-06-04 1987-12-10 Blaupunkt Werke Gmbh Hochfrequenzempfaenger mit einer digitalen anzeige der empfangsfrequenz

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244983A (en) * 1963-03-06 1966-04-05 Gen Dynamics Corp Continuously tunable direct reading high frequency converter
DE1466222C3 (de) * 1965-10-20 1974-03-21 C.Plath Gmbh Nautisch-Elektronische Technik, 2000 Hamburg Verfahren zur Erhöhung der Einstellgenauigkeit eines Überlagerungsempfängers mit digitaler Anzeige
US3753119A (en) * 1971-04-07 1973-08-14 Magnavox Co Digital tuning indicator
US3758853A (en) * 1972-03-20 1973-09-11 Heath Co Method of and apparatus for determining a tuned frequency
DE2217210C3 (de) * 1972-04-10 1978-10-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Überlagerungsempfänger mit digitaler Anzeige der Empfangsfrequenz
JPS551737B2 (xx) * 1974-05-17 1980-01-16
US4163943A (en) * 1976-06-14 1979-08-07 Matsushita Electric Industrial Co., Ltd. Radio receiver employing premixing and digital display

Also Published As

Publication number Publication date
NL179174B (nl) 1986-02-17
NL7901954A (nl) 1979-09-17
FR2420247B1 (fr) 1986-03-21
FR2420247A1 (fr) 1979-10-12
DE2909784A1 (de) 1979-09-20
US4247950A (en) 1981-01-27
DE2909784C2 (de) 1983-09-29

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Legal Events

Date Code Title Description
A1A 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
SNR Assignments of patents or rights arising from examined patent applications

Owner name: SANYO ELECTRIC CO., LTD.

V4 Discontinued because of reaching the maximum lifetime of a patent

Free format text: 19990312