DE3125725C2 - Schaltungsanordnung zur Steuerung abstimmbarer Filter - Google Patents

Schaltungsanordnung zur Steuerung abstimmbarer Filter

Info

Publication number
DE3125725C2
DE3125725C2 DE3125725A DE3125725A DE3125725C2 DE 3125725 C2 DE3125725 C2 DE 3125725C2 DE 3125725 A DE3125725 A DE 3125725A DE 3125725 A DE3125725 A DE 3125725A DE 3125725 C2 DE3125725 C2 DE 3125725C2
Authority
DE
Germany
Prior art keywords
control
converter
tunable
tuner
signals
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
DE3125725A
Other languages
German (de)
English (en)
Other versions
DE3125725A1 (de
Inventor
Robert Michael Highstown N.J. Evans
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.)
RCA Licensing Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of DE3125725A1 publication Critical patent/DE3125725A1/de
Application granted granted Critical
Publication of DE3125725C2 publication Critical patent/DE3125725C2/de
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
    • H03J5/0254—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Noise Elimination (AREA)
DE3125725A 1980-06-30 1981-06-30 Schaltungsanordnung zur Steuerung abstimmbarer Filter Expired DE3125725C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/164,684 US4368541A (en) 1980-06-30 1980-06-30 Multiplexing arrangement for a plurality of voltage controlled filters

Publications (2)

Publication Number Publication Date
DE3125725A1 DE3125725A1 (de) 1982-03-04
DE3125725C2 true DE3125725C2 (de) 1989-08-31

Family

ID=22595607

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3125725A Expired DE3125725C2 (de) 1980-06-30 1981-06-30 Schaltungsanordnung zur Steuerung abstimmbarer Filter

Country Status (6)

Country Link
US (1) US4368541A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5745738A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1167577A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3125725C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2485849B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2079556B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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US4402089A (en) * 1981-09-16 1983-08-30 Rca Corporation Television tuning system with electronic frequency adjustment apparatus
US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US4418428A (en) * 1982-03-30 1983-11-29 Rca Corporation Tuning system for a multi-band television receiver
US4418427A (en) * 1982-03-30 1983-11-29 Rca Corporation Tuning system for a multi-band television receiver
US4442548A (en) * 1982-05-14 1984-04-10 Rca Corporation Television receiver tuning circuit tunable over a wide frequency range
DE3308690A1 (de) * 1983-03-11 1984-09-13 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Verfahren zum abstimmen der schwingkreise eines nachrichtenempfangsgeraetes
DE3406150C3 (de) * 1984-02-21 1997-04-03 Telefunken Microelectron Verfahren zum Abgleich einer Hochfrequenzeingangsschaltung sowie Steuerschaltung zum Durchführen des Verfahrens
US4761829A (en) * 1985-11-27 1988-08-02 Motorola Inc. Adaptive signal strength and/or ambient noise driven audio shaping system
GB2188502B (en) * 1986-02-25 1989-11-08 Plessey Co Plc Tuner circuit including tuning voltage generator
JPH0453062Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1986-07-25 1992-12-14
US4835608A (en) * 1988-05-31 1989-05-30 Zenith Electronics Corporation Image trap filter circuit
JPH02132210U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1989-04-07 1990-11-02
US5129100A (en) * 1989-09-05 1992-07-07 General Instrument Corp. Agile output band pass filter for agile up converter
US5101509A (en) * 1990-09-14 1992-03-31 Ford Motor Company Rf filter alignment using digital processor clock
EP0540908B1 (en) * 1991-11-04 1997-01-08 Motorola, Inc. Method and apparatus for automatic tuning calibration of electronically tuned filters
ES2060528B1 (es) * 1992-10-21 1995-05-16 Fagor S Coop Ltda Sintonizador electronico programable para antenas colectivas de t.v.
US6553216B1 (en) * 1995-12-14 2003-04-22 Thomson Licensing, S.A. RF tunable filter arrangement with tunable image trap
JP3943805B2 (ja) * 2000-05-26 2007-07-11 アルプス電気株式会社 テレビジョンチューナの中間周波同調回路
EP1525678B1 (en) 2002-06-21 2008-07-30 QUALCOMM Incorporated Wireless local area network repeater
US8885688B2 (en) * 2002-10-01 2014-11-11 Qualcomm Incorporated Control message management in physical layer repeater
WO2004062305A1 (en) * 2002-12-16 2004-07-22 Widefi, Inc. Improved wireless network repeater
US8122134B2 (en) * 2002-10-11 2012-02-21 Qualcomm Incorporated Reducing loop effects in a wireless local area network repeater
US8078100B2 (en) 2002-10-15 2011-12-13 Qualcomm Incorporated Physical layer repeater with discrete time filter for all-digital detection and delay generation
CA2502876A1 (en) * 2002-10-15 2004-04-29 Widefi, Inc. Wireless local area network repeater with automatic gain control for extending network coverage
WO2004047308A2 (en) * 2002-11-15 2004-06-03 Widefi, Inc. Wireless local area network repeater with detection
AU2003279816A1 (en) * 2002-10-24 2004-05-13 Widefi, Inc. Wireless local area network repeater with in-band control channel
US7230935B2 (en) * 2002-10-24 2007-06-12 Widefi, Inc. Physical layer repeater with selective use of higher layer functions based on network operating conditions
US20050040909A1 (en) * 2003-08-20 2005-02-24 Waight Matthew Glenn Broadband integrated digitally tunable filters
US8027642B2 (en) 2004-04-06 2011-09-27 Qualcomm Incorporated Transmission canceller for wireless local area network
EP1745567B1 (en) * 2004-05-13 2017-06-14 QUALCOMM Incorporated Non-frequency translating repeater with detection and media access control
US7187904B2 (en) * 2004-06-03 2007-03-06 Widefi, Inc. Frequency translating repeater with low cost high performance local oscillator architecture
US8059727B2 (en) * 2005-01-28 2011-11-15 Qualcomm Incorporated Physical layer repeater configuration for increasing MIMO performance
DE102005025677B9 (de) * 2005-06-03 2010-11-11 Infineon Technologies Ag Empfangsverstärker, insbesondere für Fernsehempfänger und Verwendung des Empfangsverstärkers
JP2007110685A (ja) * 2005-09-16 2007-04-26 Oki Electric Ind Co Ltd 受信装置およびその妨害信号減衰方法
JP4647486B2 (ja) * 2005-12-27 2011-03-09 京セラ株式会社 送受信回路
US20070268846A1 (en) * 2006-03-31 2007-11-22 Widefi, Inc. Enhanced physical layer repeater for operation in WiMAX systems
US20100002620A1 (en) * 2006-09-01 2010-01-07 Qualcomm Incorporated Repeater having dual receiver or transmitter antenna configuration with adaptation for increased isolation
CA2663419C (en) * 2006-09-21 2016-07-19 Qualcomm Incorporated Method and apparatus for mitigating oscillation between repeaters
CA2667470A1 (en) 2006-10-26 2008-05-15 Qualcomm Incorporated Repeater techniques for multiple input multiple output utilizing beam formers
US8494470B2 (en) * 2008-11-25 2013-07-23 Silicon Laboratories Inc. Integrated receivers and integrated circuit having integrated inductors
US8140041B2 (en) * 2009-08-27 2012-03-20 Mediatek Inc. Tunable capacitive device with linearization technique employed therein
JP2011249982A (ja) * 2010-05-25 2011-12-08 Alps Electric Co Ltd テレビジョンチューナの入力同調回路
US8983417B2 (en) 2012-01-03 2015-03-17 Silicon Laboratories Inc. Low-cost receiver using integrated inductors
US8725103B2 (en) 2012-01-03 2014-05-13 Silicon Laboratories Inc. Receiver including a tracking filter
US9787278B1 (en) * 2016-09-26 2017-10-10 International Business Machines Corporation Lossless microwave switch based on tunable filters for quantum information processing

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US3550010A (en) * 1967-04-19 1970-12-22 Sarkes Tarzian Trap circuit for television tuners
DE1296226C2 (de) * 1967-12-09 1978-03-16 Philips" Patentverwaltung GmbH, 2000 Hamburg Abstimm-schaltungsanordnung mit einer schaltdiode
GB1316871A (en) * 1969-05-20 1973-05-16 Matsushita Electric Ind Co Ltd Tuning system for selecting channels
NL161320C (nl) * 1970-09-12 1980-01-15 Matsushita Electric Ind Co Ltd Kanaalkiesstelsel.
US3696302A (en) * 1970-10-30 1972-10-03 Standard Kollsman Ind Inc Uhf-vhf varactor tuner amplifying band conversion
DE2109107B2 (de) * 1971-02-26 1974-07-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Tonfrequenzfilter für Rundsteuerempfänger
US3852670A (en) * 1973-10-29 1974-12-03 Zenith Radio Corp Tuner with integral input filter
JPS5339201B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-12-29 1978-10-20
US3924191A (en) * 1974-04-01 1975-12-02 Zenith Radio Corp Touch-tuning system for a television receiver
US4011515A (en) * 1975-05-23 1977-03-08 General Electric Company Tunable scanning radio receiver
JPS5267201A (en) * 1975-12-01 1977-06-03 Matsushita Electric Ind Co Ltd Station selecting unit
US4123717A (en) * 1977-07-14 1978-10-31 Hy-Gain De Puerto Rico, Inc. Scanning receiver having priority channel indication in memory
JPS5432201A (en) 1977-08-17 1979-03-09 Sony Corp Receiving unit of signal
US4153887A (en) * 1977-12-05 1979-05-08 The Magnavox Company Electrically tunable bandpass filter
DE2814577A1 (de) * 1978-04-05 1979-10-11 Nordmende Ueberlagerungsempfaenger
DE2854852C2 (de) * 1978-12-19 1985-02-07 Telefunken electronic GmbH, 7100 Heilbronn Elektronische Abstimmeinheit, insbesondere für Fernseh-Empfangsgeräte
US4361909A (en) * 1980-05-30 1982-11-30 Rca Corporation Pre-tuner tracking traps responsive to a tuning voltage

Also Published As

Publication number Publication date
DE3125725A1 (de) 1982-03-04
JPS6338125B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-07-28
FR2485849B1 (fr) 1985-11-22
CA1167577A (en) 1984-05-15
GB2079556A (en) 1982-01-20
JPS5745738A (en) 1982-03-15
GB2079556B (en) 1984-07-11
US4368541A (en) 1983-01-11
FR2485849A1 (fr) 1981-12-31

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: RCA LICENSING CORP., PRINCETON, N.J., US

8366 Restricted maintained after opposition proceedings
8305 Restricted maintenance of patent after opposition
D4 Patent maintained restricted