FR2020707A1 - - Google Patents

Info

Publication number
FR2020707A1
FR2020707A1 FR6932235A FR6932235A FR2020707A1 FR 2020707 A1 FR2020707 A1 FR 2020707A1 FR 6932235 A FR6932235 A FR 6932235A FR 6932235 A FR6932235 A FR 6932235A FR 2020707 A1 FR2020707 A1 FR 2020707A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6932235A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2020707A1 publication Critical patent/FR2020707A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/82—Digital/analogue converters with intermediate conversion to time interval
FR6932235A 1968-10-15 1969-09-16 Withdrawn FR2020707A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76775468A 1968-10-15 1968-10-15

Publications (1)

Publication Number Publication Date
FR2020707A1 true FR2020707A1 (fr) 1970-07-17

Family

ID=25080473

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6932235A Withdrawn FR2020707A1 (fr) 1968-10-15 1969-09-16

Country Status (5)

Country Link
US (1) US3548342A (fr)
JP (1) JPS4844819B1 (fr)
DE (1) DE1951863A1 (fr)
FR (1) FR2020707A1 (fr)
GB (1) GB1249542A (fr)

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US3766497A (en) * 1972-01-21 1973-10-16 Power Control Corp Method and apparatus for pulse width modulation with variable frequency modes
US3764992A (en) * 1972-02-14 1973-10-09 Bell Telephone Labor Inc Program-variable clock pulse generator
GB1432373A (en) * 1972-08-15 1976-04-14 Indep Broadcasting Authority Apparatus for producing digised signals for defining an amplitude modulated sub-carrier
US3789304A (en) * 1972-10-19 1974-01-29 Bell Telephone Labor Inc Gated dividing circuit with reduced time variation between gating and an output signal
JPS5210818U (fr) * 1975-07-12 1977-01-25
US4220895A (en) * 1978-08-25 1980-09-02 Esquire, Inc. Non-interfering, overlapping high frequency signalling for lamp dimmer circuit
DE3342739C2 (de) * 1982-11-25 1986-10-02 Wolf-Dieter Dipl.-Ing. 8013 Haar Schleifer A/D- und D/A-Wandlung
US5255269A (en) * 1992-03-30 1993-10-19 Spacecom Systems, Inc. Transmission of data by frequency modulation using gray code
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6091940A (en) * 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
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
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US7295826B1 (en) 1998-10-21 2007-11-13 Parkervision, Inc. Integrated frequency translation and selectivity with gain control functionality, and applications thereof
US7027786B1 (en) 1998-10-21 2006-04-11 Parkervision, Inc. Carrier and clock recovery using universal frequency translation
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
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
US6049706A (en) * 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6061555A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US7006805B1 (en) 1999-01-22 2006-02-28 Parker Vision, Inc. Aliasing communication system with multi-mode and multi-band functionality 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
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
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
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
US7110435B1 (en) 1999-03-15 2006-09-19 Parkervision, Inc. Spread spectrum applications of universal frequency translation
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
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
US7072390B1 (en) 1999-08-04 2006-07-04 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
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
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7010559B2 (en) 2000-11-14 2006-03-07 Parkervision, Inc. Method and apparatus for a parallel correlator and applications thereof
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
US10571393B2 (en) * 2018-04-13 2020-02-25 Tsinghua University Terahertz gas detection method and device based on Gregory double reflection antenna

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US2478919A (en) * 1943-07-17 1949-08-16 Rca Corp Pulse type multiplex communication system
US2680153A (en) * 1949-01-14 1954-06-01 Philco Corp Multichannel communication system
GB988892A (en) * 1961-09-06 1965-04-14 Hitachi Ltd Time division, multiplex pulse code modulation system
US3358068A (en) * 1964-06-26 1967-12-12 Seeburg Corp Automatic rhythm device
FR1460565A (fr) * 1965-05-21 1966-03-04 Alcatel Sa Procédé de modulation pour la transmission de données numériques et appareillage pour sa mise en oeuvre

Also Published As

Publication number Publication date
JPS4844819B1 (fr) 1973-12-27
US3548342A (en) 1970-12-15
GB1249542A (en) 1971-10-13
DE1951863A1 (de) 1970-04-30

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Legal Events

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