JPS5712608Y2 - - Google Patents

Info

Publication number
JPS5712608Y2
JPS5712608Y2 JP1975143113U JP14311375U JPS5712608Y2 JP S5712608 Y2 JPS5712608 Y2 JP S5712608Y2 JP 1975143113 U JP1975143113 U JP 1975143113U JP 14311375 U JP14311375 U JP 14311375U JP S5712608 Y2 JPS5712608 Y2 JP S5712608Y2
Authority
JP
Japan
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
JP1975143113U
Other versions
JPS5256515U (ja
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 filed Critical
Priority to JP1975143113U priority Critical patent/JPS5712608Y2/ja
Priority to GB42572/76A priority patent/GB1552844A/en
Priority to AU18684/76A priority patent/AU497317B2/en
Priority to CA263,577A priority patent/CA1069181A/en
Priority to DE19762646966 priority patent/DE2646966A1/de
Priority to US05/733,528 priority patent/US4061980A/en
Priority to NLAANVRAGE7611620,A priority patent/NL188876C/xx
Priority to FR7631598A priority patent/FR2329112A1/fr
Publication of JPS5256515U publication Critical patent/JPS5256515U/ja
Application granted granted Critical
Publication of JPS5712608Y2 publication Critical patent/JPS5712608Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • 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
    • 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
    • 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
    • H03J7/065—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 the counter or frequency divider being used in a phase locked loop
JP1975143113U 1975-10-21 1975-10-21 Expired JPS5712608Y2 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP1975143113U JPS5712608Y2 (ja) 1975-10-21 1975-10-21
GB42572/76A GB1552844A (en) 1975-10-21 1976-10-13 Radio receivers
AU18684/76A AU497317B2 (en) 1975-10-21 1976-10-14 Radio receiver
DE19762646966 DE2646966A1 (de) 1975-10-21 1976-10-18 Rundfunkempfaenger
CA263,577A CA1069181A (en) 1975-10-21 1976-10-18 Radio receiver with plural converters and frequency control
US05/733,528 US4061980A (en) 1975-10-21 1976-10-18 Radio receiver with plural converters and frequency control
NLAANVRAGE7611620,A NL188876C (nl) 1975-10-21 1976-10-20 Radio-ontvanger.
FR7631598A FR2329112A1 (fr) 1975-10-21 1976-10-20 Recepteur radiophonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1975143113U JPS5712608Y2 (ja) 1975-10-21 1975-10-21

Publications (2)

Publication Number Publication Date
JPS5256515U JPS5256515U (ja) 1977-04-23
JPS5712608Y2 true JPS5712608Y2 (ja) 1982-03-12

Family

ID=15331202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1975143113U Expired JPS5712608Y2 (ja) 1975-10-21 1975-10-21

Country Status (8)

Country Link
US (1) US4061980A (ja)
JP (1) JPS5712608Y2 (ja)
AU (1) AU497317B2 (ja)
CA (1) CA1069181A (ja)
DE (1) DE2646966A1 (ja)
FR (1) FR2329112A1 (ja)
GB (1) GB1552844A (ja)
NL (1) NL188876C (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511027C2 (de) * 1975-03-13 1982-07-08 Siemens AG, 1000 Berlin und 8000 München Selektiver Überlagerungsempfänger
USRE30949E (en) * 1976-02-14 1982-05-25 Trio Kabushiki Kaisha Digital frequency display device
JPS5344110A (en) * 1976-10-05 1978-04-20 Saibanetsuto Kougiyou Kk System for synchronizing and synthesizing frequency of radio transmitter*receiver
US4198604A (en) * 1977-06-08 1980-04-15 Hewlett-Packard Company Heterodyne phase lock system
US4346477A (en) * 1977-08-01 1982-08-24 E-Systems, Inc. Phase locked sampling radio receiver
JPS5599851A (en) * 1979-01-24 1980-07-30 Hitachi Ltd Mobile data reception system
US4298988A (en) * 1979-02-08 1981-11-03 Jerrold Electronics Corp. Digital channel selection and fine tuning system
FR2482388A1 (fr) * 1980-05-08 1981-11-13 Visiodis Selecteur individuel de programmes de television
US5065408A (en) * 1990-04-26 1991-11-12 Motorola, Inc. Fractional-division synthesizer for a voice/data communications systems
US5210484A (en) * 1992-05-15 1993-05-11 Louis R. Fantozzi Lock-in amplifier
US5572264A (en) * 1994-02-14 1996-11-05 Hitachi, Ltd. High definition TV signal receiver
US5742189A (en) * 1994-09-16 1998-04-21 Kabushiki Kaisha Toshiba Frequency conversion circuit and radio communication apparatus with the same
US5606731A (en) * 1995-03-07 1997-02-25 Motorola, Inc. Zerox-IF receiver with tracking second local oscillator and demodulator phase locked loop oscillator
US6163684A (en) * 1997-08-01 2000-12-19 Microtune, Inc. Broadband frequency synthesizer
US6377315B1 (en) 1998-11-12 2002-04-23 Broadcom Corporation System and method for providing a low power receiver design
EP2148289B1 (fr) * 2008-07-25 2014-09-03 STMicroelectronics (Rousset) SAS Détection de présence d'un élément de communication sans contact à portée d'un terminal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998517A (en) * 1960-03-11 1961-08-29 Collins Radio Co Variable bandwidth and center frequency receiving scheme
US3416096A (en) * 1967-02-01 1968-12-10 Gen Dynamics Corp Frequency synthesizer systems for generating accurate radio frequency signals of selected frequencies
JPS555729B2 (ja) * 1971-11-29 1980-02-08
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
US3835384A (en) * 1972-12-20 1974-09-10 Gen Dynamics Corp Tuning system
US3983484A (en) * 1974-12-06 1976-09-28 Nihon Dengyo Co., Ltd. Multichannel signal transmitting and receiving apparatus

Also Published As

Publication number Publication date
US4061980A (en) 1977-12-06
GB1552844A (en) 1979-09-19
NL188876C (nl) 1992-10-16
CA1069181A (en) 1980-01-01
DE2646966A1 (de) 1977-04-28
AU497317B2 (en) 1978-12-07
FR2329112B1 (ja) 1983-02-04
DE2646966C2 (ja) 1987-08-27
NL7611620A (nl) 1977-04-25
AU1868476A (en) 1978-04-20
JPS5256515U (ja) 1977-04-23
FR2329112A1 (fr) 1977-05-20
NL188876B (nl) 1992-05-18

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