BE736580A - - Google Patents

Info

Publication number
BE736580A
BE736580A BE736580DA BE736580A BE 736580 A BE736580 A BE 736580A BE 736580D A BE736580D A BE 736580DA BE 736580 A BE736580 A BE 736580A
Authority
BE
Belgium
Application number
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
Publication of BE736580A publication Critical patent/BE736580A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • H04J4/005—Transmultiplexing
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/56—Ring systems containing three or more rings
    • C07D209/58—[b]- or [c]-condensed
    • C07D209/72—4,7-Endo-alkylene-iso-indoles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
BE736580D 1968-07-26 1969-07-25 BE736580A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1128168A CH497089A (de) 1968-07-26 1968-07-26 Anlage zur Übermittlung von kontinuierlichen Signalen

Publications (1)

Publication Number Publication Date
BE736580A true BE736580A (xx) 1969-12-31

Family

ID=4371923

Family Applications (1)

Application Number Title Priority Date Filing Date
BE736580D BE736580A (xx) 1968-07-26 1969-07-25

Country Status (10)

Country Link
US (1) US3622885A (xx)
JP (1) JPS4834442B1 (xx)
AT (1) AT287792B (xx)
BE (1) BE736580A (xx)
CH (1) CH497089A (xx)
DE (1) DE1937184C3 (xx)
FR (1) FR2014739A1 (xx)
GB (1) GB1268805A (xx)
NL (1) NL149659B (xx)
SE (1) SE355277B (xx)

Families Citing this family (55)

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FR2135029B1 (xx) * 1971-04-06 1974-03-22 Thomson Csf
US4011511A (en) * 1974-07-24 1977-03-08 The Singer Company Frequency-shift digital data link and digital frequency detection system
US4088957A (en) * 1977-01-17 1978-05-09 Rockwell International Corporation Method and apparatus for synchronously detecting a differentially encoded carrier signal
US4107469A (en) * 1977-02-17 1978-08-15 Rockwell International Corporation Multiplex/demultiplex apparatus
DE2721993C3 (de) * 1977-05-14 1980-09-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zum Übertragen von digitalen Gleichstromsignalen mittels Trägerschwingungen vorgegebener Frequenz
FR2464601B1 (fr) * 1979-08-29 1986-10-24 Trt Telecom Radio Electr Systeme de radiodiffusion numerique de plusieurs signaux d'information par un reseau d'emetteurs utilisant sensiblement la meme frequence porteuse
GB2113050A (en) * 1981-12-02 1983-07-27 Philips Electronic Associated Signal transmission system
EP0110427B1 (de) * 1982-12-07 1990-03-28 Josef Dirr Verfahren für die Übertragung von Nachrichten, bei dem die Codierung der Signale durch die Grösse der Amplituden der Halbwellen oder Perioden eines sinusförmigen Wechselstromes erfolgt
US4680777A (en) * 1984-08-13 1987-07-14 The University Of Michigan Quadrature-quadrature phase shift keying
US4730344A (en) * 1984-08-13 1988-03-08 The University Of Michigan Quadrature-quadrature phase shift keying with constant envelope
DE3509511A1 (de) * 1985-03-16 1986-09-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und schaltungsanordnung zur phasensprungfreien durchschaltung von breitbandigen digitalsignalen in einem synchronen breitbandkommunikationsnetz
US4641318A (en) * 1985-04-25 1987-02-03 Bell Communications Research, Inc. Method for improving the reliability of data transmission over Rayleigh fading channels
US4796025A (en) * 1985-06-04 1989-01-03 Simplex Time Recorder Co. Monitor/control communication net with intelligent peripherals
FR2601210B1 (fr) * 1986-07-02 1988-11-10 France Etat Procede et installation de communications numeriques pour des mobiles
FR2604316B2 (fr) * 1986-07-02 1989-05-05 France Etat Procede et installation de communication de donnees numeriques vers des mobiles
US4979190A (en) * 1988-04-01 1990-12-18 Digital Equipment Corporation Method and apparatus for stabilized data transmission
US5115455A (en) * 1990-06-29 1992-05-19 Digital Equipment Corporation Method and apparatus for stabilized data transmission
US5359630A (en) * 1992-08-13 1994-10-25 Digital Equipment Corporation Method and apparatus for realignment of synchronous data
US6694128B1 (en) * 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US7295826B1 (en) 1998-10-21 2007-11-13 Parkervision, Inc. Integrated frequency translation and selectivity with gain control functionality, and applications thereof
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US7027786B1 (en) 1998-10-21 2006-04-11 Parkervision, Inc. Carrier and clock recovery using universal frequency translation
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6873836B1 (en) 1999-03-03 2005-03-29 Parkervision, Inc. Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology
US7110435B1 (en) 1999-03-15 2006-09-19 Parkervision, Inc. Spread spectrum applications of universal frequency translation
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7054296B1 (en) 1999-08-04 2006-05-30 Parkervision, Inc. Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US7072390B1 (en) 1999-08-04 2006-07-04 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments
US7082171B1 (en) 1999-11-24 2006-07-25 Parkervision, Inc. Phase shifting applications of universal frequency translation
US6963734B2 (en) 1999-12-22 2005-11-08 Parkervision, Inc. Differential frequency down-conversion using techniques of universal frequency translation technology
US7292835B2 (en) 2000-01-28 2007-11-06 Parkervision, Inc. Wireless and wired cable modem applications of universal frequency translation technology
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7554508B2 (en) 2000-06-09 2009-06-30 Parker Vision, Inc. Phased array antenna applications on universal frequency translation
US7010559B2 (en) 2000-11-14 2006-03-07 Parkervision, Inc. Method and apparatus for a parallel correlator and applications thereof
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
CN1209744C (zh) * 2001-11-02 2005-07-06 松下电器产业株式会社 编码装置和解码装置
US7085335B2 (en) 2001-11-09 2006-08-01 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US6975848B2 (en) 2002-06-04 2005-12-13 Parkervision, Inc. Method and apparatus for DC offset removal in a radio frequency communication channel
US7321640B2 (en) 2002-06-07 2008-01-22 Parkervision, Inc. Active polyphase inverter filter for quadrature signal generation
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759998A (en) * 1951-10-26 1956-08-21 Itt Pulse communication system
US3348203A (en) * 1963-08-23 1967-10-17 Willard B Allen Scanned time compressor
US3330909A (en) * 1964-01-02 1967-07-11 Bell Telephone Labor Inc Pulse communication system
US3471646A (en) * 1965-02-08 1969-10-07 Motorola Inc Time division multiplex system with prearranged carrier frequency shifts
US3378641A (en) * 1965-10-15 1968-04-16 Martin Marietta Corp Redundancy-elimination system for transmitting each sample only if it differs from previously transmitted sample by pre-determined amount
US3485949A (en) * 1966-05-02 1969-12-23 Gen Dynamics Corp Differential phase shift keying receiver with information modulated on a plurality of tones
US3523250A (en) * 1967-02-21 1970-08-04 Martin Marietta Corp Time division multiplex multiple frequency diversity troposcatter communication system

Also Published As

Publication number Publication date
AT287792B (de) 1971-02-10
CH497089A (de) 1970-09-30
US3622885A (en) 1971-11-23
NL149659B (nl) 1976-05-17
DE1937184C3 (de) 1973-09-27
DE1937184B2 (de) 1973-03-08
JPS4834442B1 (xx) 1973-10-22
DE1937184A1 (de) 1970-01-29
NL6911449A (xx) 1970-01-29
SE355277B (xx) 1973-04-09
FR2014739A1 (xx) 1970-04-17
GB1268805A (en) 1972-03-29

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: AUTOPHON A.G.

Effective date: 19850731