NL7900715A - Radio-ontvanger met elektronische afstemming in een aantal banden. - Google Patents

Radio-ontvanger met elektronische afstemming in een aantal banden.

Info

Publication number
NL7900715A
NL7900715A NL7900715A NL7900715A NL7900715A NL 7900715 A NL7900715 A NL 7900715A NL 7900715 A NL7900715 A NL 7900715A NL 7900715 A NL7900715 A NL 7900715A NL 7900715 A NL7900715 A NL 7900715A
Authority
NL
Netherlands
Prior art keywords
bands
radio receiver
electronic tuning
tuning
electronic
Prior art date
Application number
NL7900715A
Other languages
English (en)
Other versions
NL189020C (nl
NL189020B (nl
Original Assignee
Fujitsu Ten Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26345338&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NL7900715(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP1142978U external-priority patent/JPS5830329Y2/ja
Priority claimed from JP53010133A external-priority patent/JPS5833724B2/ja
Application filed by Fujitsu Ten Ltd filed Critical Fujitsu Ten Ltd
Publication of NL7900715A publication Critical patent/NL7900715A/nl
Publication of NL189020B publication Critical patent/NL189020B/nl
Application granted granted Critical
Publication of NL189020C publication Critical patent/NL189020C/nl

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
    • 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
    • H03J5/0254—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 transfered to a D/A converter
    • H03J5/0263—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 transfered to a D/A converter the digital values being held in an auxiliary non erasable memory
    • 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
    • H03J5/24—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/246—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection using electronic means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)
NLAANVRAGE7900715,A 1978-01-31 1979-01-30 Radio-ontvanger ingericht voor een elektronische afstemming in ten minste twee banden. NL189020C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1142978U JPS5830329Y2 (ja) 1978-01-31 1978-01-31 スイツチング回路
JP53010133A JPS5833724B2 (ja) 1978-01-31 1978-01-31 電子同調ラジオ受信機

Publications (3)

Publication Number Publication Date
NL7900715A true NL7900715A (nl) 1979-08-02
NL189020B NL189020B (nl) 1992-07-01
NL189020C NL189020C (nl) 1992-12-01

Family

ID=26345338

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7900715,A NL189020C (nl) 1978-01-31 1979-01-30 Radio-ontvanger ingericht voor een elektronische afstemming in ten minste twee banden.

Country Status (10)

Country Link
US (1) US4313214A (nl)
EP (1) EP0011646B1 (nl)
AU (1) AU511400B2 (nl)
CA (1) CA1142660A (nl)
CH (1) CH648164A5 (nl)
DE (1) DE2934892A1 (nl)
GB (1) GB2040130B (nl)
NL (1) NL189020C (nl)
SE (1) SE423013B (nl)
WO (1) WO1979000570A1 (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291413A (en) * 1979-09-28 1981-09-22 Rca Corporation Search type tuning system with direct address channel selection apparatus
CA1158373A (en) * 1980-03-19 1983-12-06 Koji Terami Station selecting apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053838A (en) * 1974-12-24 1977-10-11 Fujitsu Ten Limited Radio receiver
NL7703908A (nl) * 1976-04-08 1977-10-11 Fujitsu Ten Ltd Radio-ontvanger.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931579A (en) * 1974-04-01 1976-01-06 Zenith Radio Corporation Digital signal seeking tuning system
US3971991A (en) * 1974-09-04 1976-07-27 Zenith Radio Corporation Television tuning system with varactor malfunction detection
US3943449A (en) * 1974-09-09 1976-03-09 Zenith Radio Corporation Multi-speed ramp for a varactor tuning system
GB1521900A (en) * 1974-09-25 1978-08-16 Texas Instruments Inc Radio set tuning system
US4081752A (en) * 1975-05-30 1978-03-28 Sanyo Electric Co., Ltd. Digital frequency synthesizer receiver
JPS52123115A (en) * 1976-04-09 1977-10-17 Fujitsu Ten Ltd Automatic channel selector
JPS5319707A (en) * 1976-08-06 1978-02-23 Fujitsu Ten Ltd Double band automatic tuning receiver
JPS5380108A (en) * 1976-12-24 1978-07-15 Fujitsu Ten Ltd Automatic channel selecting receiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053838A (en) * 1974-12-24 1977-10-11 Fujitsu Ten Limited Radio receiver
NL7703908A (nl) * 1976-04-08 1977-10-11 Fujitsu Ten Ltd Radio-ontvanger.

Also Published As

Publication number Publication date
DE2934892A1 (en) 1980-12-04
NL189020C (nl) 1992-12-01
NL189020B (nl) 1992-07-01
AU511400B2 (en) 1980-08-14
SE8001394L (sv) 1980-02-22
GB2040130A (en) 1980-08-20
AU4357479A (en) 1979-08-09
WO1979000570A1 (en) 1979-08-23
CA1142660A (en) 1983-03-08
EP0011646A4 (en) 1980-06-10
GB2040130B (en) 1983-03-30
EP0011646B1 (en) 1982-09-01
SE423013B (sv) 1982-04-05
EP0011646A1 (en) 1980-06-11
CH648164A5 (de) 1985-02-28
US4313214A (en) 1982-01-26

Similar Documents

Publication Publication Date Title
JPS53954A (en) Radio antenna
NL7703189A (nl) Radio-antenne.
NL7710046A (nl) Radio-ontvanger.
JPS52135243A (en) Radio frequency antenna device
GB2033685B (en) Combined electronic calculator and electronically tunable radio receiver
NL191132C (nl) Afstemschakeling.
NL180062C (nl) Radio-ontvanger.
DK122877A (da) Antenne
NL181244C (nl) Elektronische afstemschakeling.
NL191473C (nl) Radio-ontvanger met elektronische afstemming.
NL190136B (nl) Afstemstuurkring.
JPS52117507A (en) Am radio receiver
NL7614403A (nl) Radiofrequentie-antennestelselcomponent.
NL188196C (nl) Radio-ontvanger.
NL7703908A (nl) Radio-ontvanger.
NL7900715A (nl) Radio-ontvanger met elektronische afstemming in een aantal banden.
NL188134C (nl) Elektronische uhf-afstemeenheid.
NL7612700A (nl) Antenne-afsteminrichting.
NL189840C (nl) Radio-ontvanginstallatie.
IT1087136B (it) Ricevitore radio o televisivo
NL185124C (nl) Superheterodijne radio-ontvanger met automatische afstemming.
IT1132364B (it) Radioricevitore
NL7609401A (nl) Radiofrequentie-afsteminrichting.
JPS5433607A (en) Antenna tuning circuit
DK99579A (da) Antenne med elektronisk forstaerker

Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
A85 Still pending on 85-01-01
BB A search report has been drawn up
BC A request for examination has been filed
V4 Discontinued because of reaching the maximum lifetime of a patent

Free format text: 990130