BR9203470A - Sistema de comunicacao sem fio - Google Patents

Sistema de comunicacao sem fio

Info

Publication number
BR9203470A
BR9203470A BR929203470A BR9203470A BR9203470A BR 9203470 A BR9203470 A BR 9203470A BR 929203470 A BR929203470 A BR 929203470A BR 9203470 A BR9203470 A BR 9203470A BR 9203470 A BR9203470 A BR 9203470A
Authority
BR
Brazil
Prior art keywords
wireless communication
communication system
wireless
communication
Prior art date
Application number
BR929203470A
Other languages
English (en)
Inventor
Michael W Houghton
Keith R Manssen
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
Publication of BR9203470A publication Critical patent/BR9203470A/pt

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)
BR929203470A 1991-09-06 1992-09-04 Sistema de comunicacao sem fio BR9203470A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/755,982 US5140635A (en) 1991-09-06 1991-09-06 Wireless telephone with frequency inversion scrambling

Publications (1)

Publication Number Publication Date
BR9203470A true BR9203470A (pt) 1993-04-13

Family

ID=25041515

Family Applications (1)

Application Number Title Priority Date Filing Date
BR929203470A BR9203470A (pt) 1991-09-06 1992-09-04 Sistema de comunicacao sem fio

Country Status (4)

Country Link
US (1) US5140635A (pt)
BR (1) BR9203470A (pt)
CA (1) CA2074610C (pt)
MX (1) MX9205089A (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9203471A (pt) * 1991-09-06 1993-04-13 Motorola Inc Sistema de comunicacoes em fio,e processo para capacitar modo de demonstracao de embaralhamento em dispositivo de comunicacoes
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
US5335279A (en) * 1993-07-30 1994-08-02 Texas Instruments Incorporated Digital voice-band spectrum inversion apparatus
FI101670B (fi) * 1995-12-15 1998-07-31 Nokia Mobile Phones Ltd Menetelmä matkaviestinverkon ja matkaviestimen välisen tiedonsiirron s alauksen ilmaisemiseksi

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4989230A (en) * 1988-09-23 1991-01-29 Motorola, Inc. Cellular cordless telephone
JP3103850B2 (ja) * 1989-03-07 2000-10-30 アイシン精機株式会社 秘匿通信制御装置

Also Published As

Publication number Publication date
US5140635A (en) 1992-08-18
CA2074610C (en) 1996-07-09
MX9205089A (es) 1993-03-01
CA2074610A1 (en) 1993-03-07

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
HO Change of classification

Free format text: H04K 1/00

FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 10A , 11A 12A , 13A , 14A , 15A , 16A , 17A E 18A ANUI DADES.

B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2278 DE 02/09/2014 POR TER SIDO INDEVIDA.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AS 10A, 11A, 12A, 13A, 14A, 15A, 16A, 17A E 18A ANUIDADES.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2606 DE 15-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.