AR247322A1 - Disposicion de comunicacion inalambrica con mezclado por inversion de frecuencia - Google Patents

Disposicion de comunicacion inalambrica con mezclado por inversion de frecuencia

Info

Publication number
AR247322A1
AR247322A1 AR92323114A AR32311492A AR247322A1 AR 247322 A1 AR247322 A1 AR 247322A1 AR 92323114 A AR92323114 A AR 92323114A AR 32311492 A AR32311492 A AR 32311492A AR 247322 A1 AR247322 A1 AR 247322A1
Authority
AR
Argentina
Prior art keywords
frequency
investment
coupled
transmitter
receiver
Prior art date
Application number
AR92323114A
Other languages
English (en)
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of AR247322A1 publication Critical patent/AR247322A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

UNA DISPOSICION DE COMUNICACION IANLAMBRICA CON MEZCLADO POR INVERSION DE FRECUENCIA QUE TIENE UNA UNIDAD BASE, ACOPLADA A UN SISTEMA DE TELEFONO DE LINEA DE TIERRA; UN TRANSMISOR Y UN RECEPTOR PARA TRANSMITIR Y RECIBIR SENALES DE VOZ HACIA Y DESDE UNA UNIDAD REMOTA, LA CUAL TIENE UN TRANSMISOR Y UN RECEPTOR PARA TRANSMITIR Y RECIBIR SENALES DE VOZ HACIA Y DESDE LA UNIDAD BASE; COMPRENDIENDO UN PRIMER CIRCUITO DE CIFRADO DE INVERSION DE FRECUENCIA, ACOPLADO AL TRANSMISOR DEL DISPOSITIVO REMOTO; UN PRIMER CIRCUITO DE CIFRADO DE INVERSION DE FRECUENCIA, ACOPLADO AL RECEPTOR DEL DIPOSITIVO REMOTO; UN SEGUNDO CIRCUITO DE CIFRADO DE INVERSION DE FRECUENCIA, ACOPLADO AL TRANSMISOR DE LA UNIDAD BASE; UN SEGUNDO CIRCUITO DESCIFRADO DE INVERSION DE FRECUENCIA ACOPLADO AL RECEPTOR DE LA UNIDAD BASE, Y UN CIRCUITO DE CONTROL PARA GENERAR UNA SENAL DE CONTROL PARA INHABILITAR EL PRIMERO Y SEGUNDO CIRCUITOS DE DESCIFRADO.
AR92323114A 1991-09-06 1992-09-04 Disposicion de comunicacion inalambrica con mezclado por inversion de frecuencia AR247322A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/755,970 US5168522A (en) 1991-09-06 1991-09-06 Wireless telephone with frequency inversion scrambling

Publications (1)

Publication Number Publication Date
AR247322A1 true AR247322A1 (es) 1994-11-30

Family

ID=25041459

Family Applications (1)

Application Number Title Priority Date Filing Date
AR92323114A AR247322A1 (es) 1991-09-06 1992-09-04 Disposicion de comunicacion inalambrica con mezclado por inversion de frecuencia

Country Status (5)

Country Link
US (1) US5168522A (es)
AR (1) AR247322A1 (es)
BR (1) BR9203471A (es)
CA (1) CA2075257C (es)
MX (1) MX9205091A (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3138296B2 (ja) * 1991-09-10 2001-02-26 ローム株式会社 変復調回路及びこれを利用した通信方式
US5392354A (en) * 1991-10-30 1995-02-21 Fujitsu Limited Cordless phone system capable of scrambling communication signals
SE9301419L (sv) * 1993-04-27 1994-10-24 Saab Scania Combitech Ab System för trådlös och krypterad överföring av information
FR2703199B1 (fr) * 1993-03-26 1995-06-02 Matra Communication Procédé de transmission radio-électrique utilisant des stations répétrices à retournement de spectre.
US5335279A (en) * 1993-07-30 1994-08-02 Texas Instruments Incorporated Digital voice-band spectrum inversion apparatus
JPH08265211A (ja) * 1995-03-22 1996-10-11 Sony Corp 集積回路および送受信機
KR19980021370A (ko) * 1996-09-16 1998-06-25 김광호 무선전화기의 통화내용 도청방지 방법 및 장치
US5907538A (en) * 1997-02-18 1999-05-25 White; Donald R. Full duplex communication circuit with a transducer for simultaneously generating audio output and receiving audio input
US7072476B2 (en) * 1997-02-18 2006-07-04 Matech, Inc. Audio headset
US6256491B1 (en) * 1997-12-31 2001-07-03 Transcript International, Inc. Voice security between a composite channel telephone communications link and a telephone
JP4519963B2 (ja) * 1999-06-21 2010-08-04 富士通株式会社 生体情報の暗号化・復号化方法および装置並びに、生体情報を利用した本人認証システム
US6597301B2 (en) * 2001-10-03 2003-07-22 Shure Incorporated Apparatus and method for level-dependent companding for wireless audio noise reduction
WO2005048574A1 (en) * 2003-11-11 2005-05-26 Matech, Inc. Automatic-switching wireless communication device
CN1879393A (zh) * 2003-11-11 2006-12-13 马帝克公司 具有单个换能器的双向通信设备
US8315379B2 (en) * 2004-11-10 2012-11-20 Matech, Inc. Single transducer full duplex talking circuit
US8930182B2 (en) * 2011-03-17 2015-01-06 International Business Machines Corporation Voice transformation with encoded information
CN114006622B (zh) * 2021-11-03 2023-07-07 王赓 一种5g通信用的人工智能信号发射装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4228321A (en) * 1978-05-16 1980-10-14 Bell Telephone Laboratories, Incorporated Privacy transmission system with remote key control
US4555805A (en) * 1980-03-14 1985-11-26 Harris Corporation Secure mobile telephone system
US4411017A (en) * 1980-03-14 1983-10-18 Harris Corporation Secure mobile telephone system
US4920567A (en) * 1986-07-03 1990-04-24 Motorola, Inc. Secure telephone terminal
US4827507A (en) * 1987-06-19 1989-05-02 Motorola, Inc. Duplex analog scrambler
US4972479A (en) * 1987-07-10 1990-11-20 Tobias Jr Ray W Method and apparatus for providing privacy/security in a communication system
US4989230A (en) * 1988-09-23 1991-01-29 Motorola, Inc. Cellular cordless telephone
US5140635A (en) * 1991-09-06 1992-08-18 Motorola, Inc. Wireless telephone with frequency inversion scrambling

Also Published As

Publication number Publication date
CA2075257A1 (en) 1993-03-07
BR9203471A (pt) 1993-04-13
MX9205091A (es) 1993-03-01
CA2075257C (en) 1998-01-20
US5168522A (en) 1992-12-01

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