MX166680B - Sistema de comunicacion con dispositivos de codificacion en serie - Google Patents
Sistema de comunicacion con dispositivos de codificacion en serieInfo
- Publication number
- MX166680B MX166680B MX016966A MX1696689A MX166680B MX 166680 B MX166680 B MX 166680B MX 016966 A MX016966 A MX 016966A MX 1696689 A MX1696689 A MX 1696689A MX 166680 B MX166680 B MX 166680B
- Authority
- MX
- Mexico
- Prior art keywords
- response
- encoding terminal
- data message
- communication system
- sent
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
-
- 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
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Dc Digital Transmission (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
La presente invención se refiere a un método para restablecer comunicaciones codificadas en un circuito de comunicaciones que emplea cuando menos dos enlaces de comunicaciones que emplea cuando menos dos enlaces de comunicación y tiene una terminal de codificación de origen y una terminal de codificación de respuesta, y cuando menos un codificador intermedio, caracterizado por las etapas de; detectar en el codificador intermedio y la terminal de codificación de respuesta, un primer mensaje de datos enviado de la terminal de codificación de origen; determinar en el codificador intermedio, si la terminal de codificación de respuesta ha enviado un segundo mensaje de datos en respuesta al primer mensaje de datos, y colocar el codificador intermedio en un modo de no codificación transparente, si la terminal de codificacion de respuesta ha enviado el segundo mensaje de datos.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/232,265 US4914696A (en) | 1988-08-15 | 1988-08-15 | Communications system with tandem scrambling devices |
Publications (1)
Publication Number | Publication Date |
---|---|
MX166680B true MX166680B (es) | 1993-01-27 |
Family
ID=22872461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX016966A MX166680B (es) | 1988-08-15 | 1989-07-28 | Sistema de comunicacion con dispositivos de codificacion en serie |
Country Status (10)
Country | Link |
---|---|
US (1) | US4914696A (es) |
JP (1) | JPH07101866B2 (es) |
KR (1) | KR920003830B1 (es) |
CN (1) | CN1012410B (es) |
AU (1) | AU603975B2 (es) |
BR (1) | BR8903853A (es) |
CA (1) | CA1296771C (es) |
DK (1) | DK386989A (es) |
IL (1) | IL90598A (es) |
MX (1) | MX166680B (es) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE465797B (sv) * | 1990-03-07 | 1991-10-28 | Ericsson Telefon Ab L M | Foerfarande att oeverfoera synkroniseringsinformation vid krypterad oeverfoering i ett mobilradiosystem |
US6175312B1 (en) | 1990-05-29 | 2001-01-16 | Microchip Technology Incorporated | Encoder and decoder microchips and remote control devices for secure unidirectional communication |
US5081679A (en) * | 1990-07-20 | 1992-01-14 | Ericsson Ge Mobile Communications Holding Inc. | Resynchronization of encryption systems upon handoff |
US5091942A (en) * | 1990-07-23 | 1992-02-25 | Ericsson Ge Mobile Communications Holding, Inc. | Authentication system for digital cellular communications |
US5237612A (en) * | 1991-03-29 | 1993-08-17 | Ericsson Ge Mobile Communications Inc. | Cellular verification and validation system |
US5241598A (en) * | 1991-05-22 | 1993-08-31 | Ericsson Ge Mobile Communications, Inc. | Rolling key resynchronization in cellular verification and validation system |
US5179591A (en) * | 1991-10-16 | 1993-01-12 | Motorola, Inc. | Method for algorithm independent cryptographic key management |
US5392357A (en) * | 1991-12-09 | 1995-02-21 | At&T Corp. | Secure telecommunications |
US5434920A (en) * | 1991-12-09 | 1995-07-18 | At&T Corp. | Secure telecommunications |
IL103062A (en) * | 1992-09-04 | 1996-08-04 | Algorithmic Res Ltd | Data processor security system |
US6980655B2 (en) * | 2000-01-21 | 2005-12-27 | The Chamberlain Group, Inc. | Rolling code security system |
BR9606663A (pt) | 1995-05-17 | 1997-09-16 | Chamberlain Group Inc | Transmissor para enviar um sinal criptografado para controlar um atuador receptor para receber um sinal criptografado de um transmissor e para gerar um sinal de atuação e receptor para receber um sinal de frequência de rádio criptografado de um transmissor e para gerar um sinal de atuação |
US6690796B1 (en) | 1995-05-17 | 2004-02-10 | The Chamberlain Group, Inc. | Rolling code security system |
US6025785A (en) * | 1996-04-24 | 2000-02-15 | The Chamberlain Group, Inc. | Multiple code formats in a single garage door opener including at least one fixed code format and at least one rolling code format |
US5852662A (en) * | 1996-07-11 | 1998-12-22 | Lucent Technologies Inc. | Scrambler bypass system |
US6268788B1 (en) | 1996-11-07 | 2001-07-31 | Litronic Inc. | Apparatus and method for providing an authentication system based on biometrics |
US6367017B1 (en) | 1996-11-07 | 2002-04-02 | Litronic Inc. | Apparatus and method for providing and authentication system |
US5844497A (en) * | 1996-11-07 | 1998-12-01 | Litronic, Inc. | Apparatus and method for providing an authentication system |
US5949349A (en) * | 1997-02-19 | 1999-09-07 | The Chamberlain Group, Inc. | Code responsive radio receiver capable of operation with plural types of code transmitters |
US6426959B1 (en) | 1998-01-20 | 2002-07-30 | Innovative Communications Technologies, Inc. | System and method for facilitating component management in a multiple vendor satellite communications network |
US6381250B1 (en) | 1998-01-23 | 2002-04-30 | Innovative Communications Technologies, Inc. | Capacity allocation system using semi-autonomous network elements to implement and control a transmission schedule |
US9148409B2 (en) | 2005-06-30 | 2015-09-29 | The Chamberlain Group, Inc. | Method and apparatus to facilitate message transmission and reception using different transmission characteristics |
US8422667B2 (en) | 2005-01-27 | 2013-04-16 | The Chamberlain Group, Inc. | Method and apparatus to facilitate transmission of an encrypted rolling code |
US9313027B2 (en) * | 2005-12-29 | 2016-04-12 | Proton World International N.V. | Protection of a calculation performed by an integrated circuit |
US8243774B2 (en) * | 2007-01-03 | 2012-08-14 | Samsung Electronics Co., Ltd. | System and method for information scrambling in a wireless communication system |
JP2009044481A (ja) * | 2007-08-09 | 2009-02-26 | Ricoh Co Ltd | データ処理装置及び画像形成装置 |
US10652743B2 (en) | 2017-12-21 | 2020-05-12 | The Chamberlain Group, Inc. | Security system for a moveable barrier operator |
US11074773B1 (en) | 2018-06-27 | 2021-07-27 | The Chamberlain Group, Inc. | Network-based control of movable barrier operators for autonomous vehicles |
US11423717B2 (en) | 2018-08-01 | 2022-08-23 | The Chamberlain Group Llc | Movable barrier operator and transmitter pairing over a network |
US10997810B2 (en) | 2019-05-16 | 2021-05-04 | The Chamberlain Group, Inc. | In-vehicle transmitter training |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4182933A (en) * | 1969-02-14 | 1980-01-08 | The United States Of America As Represented By The Secretary Of The Army | Secure communication system with remote key setting |
US4228321A (en) * | 1978-05-16 | 1980-10-14 | Bell Telephone Laboratories, Incorporated | Privacy transmission system with remote key control |
US4349695A (en) * | 1979-06-25 | 1982-09-14 | Datotek, Inc. | Recipient and message authentication method and system |
US4411017A (en) * | 1980-03-14 | 1983-10-18 | Harris Corporation | Secure mobile telephone system |
US4555805A (en) * | 1980-03-14 | 1985-11-26 | Harris Corporation | Secure mobile telephone system |
US4392021A (en) * | 1980-07-28 | 1983-07-05 | Technical Communications Corporation | Secure facsimile transmission system using time-delay modulation |
US4449247A (en) * | 1980-07-30 | 1984-05-15 | Harris Corporation | Local orderwire facility for fiber optic communication system |
DE3123168C1 (de) * | 1981-06-11 | 1982-11-04 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur Schluesseluebertragung |
JPS589461A (ja) * | 1981-07-10 | 1983-01-19 | Fujitsu Ltd | 音声秘匿回線切換方式 |
US4433211A (en) * | 1981-11-04 | 1984-02-21 | Technical Communications Corporation | Privacy communication system employing time/frequency transformation |
US4549308A (en) * | 1982-07-12 | 1985-10-22 | At&T Bell Laboratories | Secure mobile radio telephony |
US4638298A (en) * | 1985-07-16 | 1987-01-20 | Telautograph Corporation | Communication system having message repeating terminals |
US4815128A (en) * | 1986-07-03 | 1989-03-21 | Motorola, Inc. | Gateway system and method for interconnecting telephone calls with a digital voice protected radio network |
US4827507A (en) * | 1987-06-19 | 1989-05-02 | Motorola, Inc. | Duplex analog scrambler |
-
1988
- 1988-08-15 US US07/232,265 patent/US4914696A/en not_active Expired - Fee Related
-
1989
- 1989-06-09 CA CA000602299A patent/CA1296771C/en not_active Expired - Lifetime
- 1989-06-13 IL IL90598A patent/IL90598A/xx not_active IP Right Cessation
- 1989-06-16 AU AU36514/89A patent/AU603975B2/en not_active Ceased
- 1989-07-28 MX MX016966A patent/MX166680B/es unknown
- 1989-08-01 BR BR898903853A patent/BR8903853A/pt unknown
- 1989-08-08 DK DK386989A patent/DK386989A/da not_active Application Discontinuation
- 1989-08-11 KR KR1019890011440A patent/KR920003830B1/ko not_active IP Right Cessation
- 1989-08-12 CN CN89106376A patent/CN1012410B/zh not_active Expired
- 1989-08-14 JP JP1208044A patent/JPH07101866B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU3651489A (en) | 1990-02-15 |
JPH07101866B2 (ja) | 1995-11-01 |
CN1012410B (zh) | 1991-04-17 |
AU603975B2 (en) | 1990-11-29 |
JPH02112341A (ja) | 1990-04-25 |
KR920003830B1 (ko) | 1992-05-15 |
CA1296771C (en) | 1992-03-03 |
DK386989D0 (da) | 1989-08-08 |
BR8903853A (pt) | 1990-03-20 |
DK386989A (da) | 1990-02-16 |
US4914696A (en) | 1990-04-03 |
KR900004130A (ko) | 1990-03-27 |
IL90598A (en) | 1992-11-15 |
CN1040472A (zh) | 1990-03-14 |
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