ES452652A1 - Perfeccionamientos en dispositivos para transmitir una in- formacion desde un primer a un segundo lugar. - Google Patents

Perfeccionamientos en dispositivos para transmitir una in- formacion desde un primer a un segundo lugar.

Info

Publication number
ES452652A1
ES452652A1 ES452652A ES452652A ES452652A1 ES 452652 A1 ES452652 A1 ES 452652A1 ES 452652 A ES452652 A ES 452652A ES 452652 A ES452652 A ES 452652A ES 452652 A1 ES452652 A1 ES 452652A1
Authority
ES
Spain
Prior art keywords
signal
radio systems
reducing
methods
modulation
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
ES452652A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of ES452652A1 publication Critical patent/ES452652A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • 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
    • H04B1/68—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 for wholly or partially suppressing the carrier or one side band
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/0092—Measures to linearise or reduce distortion of oscillator characteristics

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Dc Digital Transmission (AREA)
ES452652A 1975-10-24 1976-10-22 Perfeccionamientos en dispositivos para transmitir una in- formacion desde un primer a un segundo lugar. Expired ES452652A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/625,491 US4019140A (en) 1975-10-24 1975-10-24 Methods and apparatus for reducing intelligible crosstalk in single sideband radio systems

Publications (1)

Publication Number Publication Date
ES452652A1 true ES452652A1 (es) 1977-10-16

Family

ID=24506333

Family Applications (1)

Application Number Title Priority Date Filing Date
ES452652A Expired ES452652A1 (es) 1975-10-24 1976-10-22 Perfeccionamientos en dispositivos para transmitir una in- formacion desde un primer a un segundo lugar.

Country Status (10)

Country Link
US (1) US4019140A (es)
JP (1) JPS5253611A (es)
BE (1) BE847569A (es)
CA (1) CA1066362A (es)
DE (1) DE2648273C2 (es)
ES (1) ES452652A1 (es)
FR (1) FR2329037A1 (es)
GB (1) GB1561699A (es)
NL (1) NL7611677A (es)
SE (1) SE413452B (es)

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462114A (en) * 1980-07-02 1984-07-24 Motorola, Inc. Signum signal generator
US4432079A (en) * 1981-11-02 1984-02-14 The United States Of America As Represented By The Secretary Of The Navy Synchronous/asynchronous independent single sideband acoustic telemetry
US4479226A (en) * 1982-03-29 1984-10-23 At&T Bell Laboratories Frequency-hopped single sideband mobile radio system
US4541118A (en) * 1983-12-22 1985-09-10 Motorola, Inc. SSB System with pilot coded squelch
US4675880A (en) * 1985-05-02 1987-06-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Antimultipath communication by injecting tone into null in signal spectrum
US4829590A (en) * 1986-01-13 1989-05-09 Technology Research International, Inc. Adaptive noise abatement system
US4819263A (en) * 1986-06-30 1989-04-04 Cellular Communications Corporation Apparatus and method for hands free telephonic communication
US4835493A (en) * 1987-10-19 1989-05-30 Hughes Aircraft Company Very wide bandwidth linear amplitude modulation of RF signal by vector summation
US5020133A (en) * 1989-06-21 1991-05-28 The United States Of America As Represented By The Secretary Of The Army Phase/frequency modulator
US5133083A (en) * 1990-01-12 1992-07-21 Hewlett-Packard Company Adjacent channel selectivity signal generator system
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US6160856A (en) * 1997-12-18 2000-12-12 Advanced Micro Devices, Inc. System for providing amplitude and phase modulation of line signals using delay lines
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
US6091940A (en) * 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6061555A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US7295826B1 (en) 1998-10-21 2007-11-13 Parkervision, Inc. Integrated frequency translation and selectivity with gain control functionality, and applications thereof
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
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
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
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
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
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
US7110435B1 (en) 1999-03-15 2006-09-19 Parkervision, Inc. Spread spectrum applications of universal frequency translation
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
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
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
US7054296B1 (en) 1999-08-04 2006-05-30 Parkervision, Inc. Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation
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
US7200193B2 (en) * 2002-01-30 2007-04-03 The Aerospace Corporation Quadrature vestigial sideband digital communications method and system with correlated noise removal
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
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
TWI280690B (en) * 2003-03-18 2007-05-01 Tdk Corp Electronic device for wireless communications and reflector device for wireless communication cards
JP3903986B2 (ja) * 2003-12-26 2007-04-11 カシオ計算機株式会社 時刻情報送受信装置、及び、時刻情報送受信用回路
CN101288260A (zh) * 2005-01-27 2008-10-15 美商内数位科技公司 使用未由他人分享联合随机衍生秘钥方法及系统
CN101953177A (zh) * 2007-12-19 2011-01-19 福尔肯纳米有限公司 用于提高通信速度、频谱效率并实现其他益处的公共波形和边带抑制通信系统和方法
CN108879958B (zh) * 2018-07-23 2021-12-10 阳光电源股份有限公司 一种分布式电源系统及其通信串扰抑制方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448055A (en) * 1944-02-21 1948-08-31 Standard Telephones Cables Ltd Wobbled frequency carrier wave communication system
CH246145A (de) * 1945-03-15 1946-12-15 Telefunken Gmbh Nachrichten-Übertragungseinrichtung mit ultrahochfrequentem Träger.
US2692330A (en) * 1950-05-22 1954-10-19 Rca Corp Noise reduction arrangement
US3100871A (en) * 1961-01-03 1963-08-13 Motorola Inc Single sideband receiver having squelch and phase-locked detection means
US3092833A (en) * 1961-05-01 1963-06-04 Sperry Rand Corp Carrier phase modulated dual purpose communication system
US3140490A (en) * 1961-11-30 1964-07-07 Sichak Associates Communication system with automatic antenna beam steering
US3343087A (en) * 1964-09-02 1967-09-19 Bell Telephone Labor Inc Quantization noise reduction system using chirp network prior to quantizing
US3354410A (en) * 1965-07-22 1967-11-21 Bell Telephone Labor Inc Method for reducing interference caused by electromagnetic radiation from clock controlled systems
US3371277A (en) * 1965-07-26 1968-02-27 Scantlin Electronics Inc Noise control in composite transmission systems
GB1218015A (en) * 1967-03-13 1971-01-06 Nat Res Dev Improvements in or relating to systems for transmitting television signals
US3478268A (en) * 1967-06-16 1969-11-11 Sylvania Electric Prod Suppression of strong interfering signals in a radio receiver
US3614622A (en) * 1968-04-30 1971-10-19 Codex Corp Data transmission method and system
US3689841A (en) * 1970-10-23 1972-09-05 Signatron Communication system for eliminating time delay effects when used in a multipath transmission medium

Also Published As

Publication number Publication date
JPS5253611A (en) 1977-04-30
CA1066362A (en) 1979-11-13
GB1561699A (en) 1980-02-27
US4019140A (en) 1977-04-19
FR2329037A1 (fr) 1977-05-20
DE2648273A1 (de) 1977-04-28
BE847569A (fr) 1977-02-14
SE413452B (sv) 1980-05-27
FR2329037B1 (es) 1981-05-22
NL7611677A (nl) 1977-04-26
DE2648273C2 (de) 1982-06-09
SE7611708L (sv) 1977-04-25

Similar Documents

Publication Publication Date Title
ES452652A1 (es) Perfeccionamientos en dispositivos para transmitir una in- formacion desde un primer a un segundo lugar.
US4176316A (en) Secure single sideband communication system using modulated noise subcarrier
KR940704095A (ko) 신호 합성방법 및 장치
AR241621A1 (es) Dispositivo de codificacion
JPS5222866A (en) Demodulation system for angle modulated signal wave
MY103398A (en) Method and apparatus for demodulating a biphase signal
ES460526A1 (es) Un dispositivo para sincronizar la senal de reloj de un re- ceptor en un sistema de transmision de datos.
ES8504582A1 (es) Sistema de modulacion para circuitos de via ferroviaria
ES442932A1 (es) Perfeccionamientos en dispositivos numericos de reconoci- miento de mensajes nrz candenciados por una frecuencia dada.
JPS5243317A (en) Scramble device and disscrable device when transmitting image signal
USRE34004E (en) Secure single sideband communication system using modulated noise subcarrier
ES425145A1 (es) Un metodo para convertir una senal de datos en codigo bina-rio en otra senal en codigo de dos impulsos con la misma po-laridad y otros dos con polaridad opuesta por cada bit.
ES8406013A1 (es) Dispositivo emisor de ondas electromagneticas en respuesta a las ondas recibidas.
GB9221315D0 (en) System for prevent a scrambler from generating undesired symbols
FR2416597A1 (fr) Procede de codage d'un signal
JPS52151510A (en) Transmission and reception system and its device of quadrature multiplex signal
SU1840119A1 (ru) Приемопередающая аппаратура широкополосных псевдослучайных сигналов
SU1840131A1 (ru) Устройство передачи и приема для широкополосной радиосвязи
JPS5287908A (en) Pam transmission system
JPS5391651A (en) Digital amplitude modulator
JPS5211812A (en) Data transmission equipment
JPS5267243A (en) Amplitude phase modulation signal demodulation unit
JPS53131716A (en) Digital signal transmission system
SU1840030A1 (ru) Адаптивная система радиосвязи через исз
FR2262883A1 (en) Numerical HF modulation and demodulation device - uses pulses spaced by half the transmission period