BR9203470A - Sistema de comunicacao sem fio - Google Patents

Sistema de comunicacao sem fio

Info

Publication number: BR9203470A
Authority: BR; Brazil
Prior art keywords: wireless communication; communication system; wireless; communication
Prior art date: 1991-09-06

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.)

1991-09-06

Filing date

1992-09-04

Publication date

1993-04-13

1992-09-04 Application filed by Motorola Inc filed Critical Motorola Inc

1993-04-13 Publication of BR9203470A publication Critical patent/BR9203470A/pt

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

1991
- 1991-09-06 US US07/755,982 patent/US5140635A/en not_active Expired - Lifetime
1992
- 1992-07-24 CA CA002074610A patent/CA2074610C/en not_active Expired - Fee Related
- 1992-09-04 MX MX9205089A patent/MX9205089A/es not_active IP Right Cessation
- 1992-09-04 BR BR929203470A patent/BR9203470A/pt not_active IP Right Cessation

Also Published As

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

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Legal Events

Date	Code	Title	Description
1998-08-18	FB36	Technical and formal requirements: requirement - article 36 of industrial property law
1999-01-26	FB36	Technical and formal requirements: requirement - article 36 of industrial property law
1999-07-20	HO	Change of classification	Free format text: H04K 1/00
1999-08-17	FF	Decision: intention to grant
2000-03-08	FG9A	Patent or certificate of addition granted
2010-12-21	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.
2014-09-02	B24H	Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
2020-12-08	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.
2020-12-15	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.
2021-03-30	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.