DE3370424D1 - Synchronization apparatus in redundant time-division-multiple-access communication equipment - Google Patents

Synchronization apparatus in redundant time-division-multiple-access communication equipment

Info

Publication number
DE3370424D1
DE3370424D1 DE8383307099T DE3370424T DE3370424D1 DE 3370424 D1 DE3370424 D1 DE 3370424D1 DE 8383307099 T DE8383307099 T DE 8383307099T DE 3370424 T DE3370424 T DE 3370424T DE 3370424 D1 DE3370424 D1 DE 3370424D1
Authority
DE
Germany
Prior art keywords
division
communication equipment
access communication
synchronization apparatus
redundant time
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
DE8383307099T
Other languages
English (en)
Inventor
Sachio Miyazaki
Shinichiro Aoki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE3370424D1 publication Critical patent/DE3370424D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Radio Relay Systems (AREA)
DE8383307099T 1982-11-26 1983-11-21 Synchronization apparatus in redundant time-division-multiple-access communication equipment Expired DE3370424D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57205977A JPS5997245A (ja) 1982-11-26 1982-11-26 二重化された時分割多元接続方式の通信装置における同期方式

Publications (1)

Publication Number Publication Date
DE3370424D1 true DE3370424D1 (en) 1987-04-23

Family

ID=16515845

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383307099T Expired DE3370424D1 (en) 1982-11-26 1983-11-21 Synchronization apparatus in redundant time-division-multiple-access communication equipment

Country Status (4)

Country Link
US (1) US4574377A (de)
EP (1) EP0110648B1 (de)
JP (1) JPS5997245A (de)
DE (1) DE3370424D1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60240278A (ja) * 1984-05-15 1985-11-29 Setsutaka Tomochika 分割区域値のコ−ド化方法
JPS60239881A (ja) * 1984-05-15 1985-11-28 Setsutaka Tomochika 分割区域値のコ−ド化方法
JPS60239880A (ja) * 1984-05-15 1985-11-28 Setsutaka Tomochika 分割区域値のコ−ド化方法
JPS60239879A (ja) * 1984-05-15 1985-11-28 Setsutaka Tomochika 分割区域値のコ−ド化方法
US4882738A (en) * 1987-06-25 1989-11-21 Nec Corporation Clock control system
US4922489A (en) * 1987-10-23 1990-05-01 Siemens Aktiengesellschaft Circuit configuration for routine testing of the clock supply of a large number of units operated with the same clock
US5376928A (en) * 1992-09-18 1994-12-27 Thomson Consumer Electronics, Inc. Exchanging data and clock lines on multiple format data buses
JP2511370B2 (ja) * 1993-02-26 1996-06-26 富士通株式会社 受信回路
GB9414331D0 (en) * 1994-07-15 1994-09-07 Thomson Consumer Electronics Combined I*C and IM bus architecture
JP3622510B2 (ja) 1998-06-19 2005-02-23 富士通株式会社 ディジタル加入者線伝送方法、ａｄｓｌトランシーバ、チャンネルアナリシステ方法及びａｄｓｌ装置
DE19832440A1 (de) * 1998-07-18 2000-01-20 Alcatel Sa Synchronisationsverfahren, primärer Referenztaktgenerator und Netzelement für ein synchrones digitales Nachrichtenübertragungsnetz
JP3575998B2 (ja) * 1998-08-28 2004-10-13 富士通株式会社 フレーム同期処理装置及びフレーム同期処理方法
JP4207329B2 (ja) * 1999-09-20 2009-01-14 富士通株式会社 フレーム同期回路
US6728535B2 (en) 2001-05-02 2004-04-27 The Boeing Company Fail-over of forward link equipment
SE0201008D0 (sv) * 2002-04-03 2002-04-03 Teracom Ab A method and a system for synchronising digital data streams
US6970045B1 (en) 2003-06-25 2005-11-29 Nel Frequency Controls, Inc. Redundant clock module
US8747387B2 (en) * 2005-10-11 2014-06-10 Covidien Lp IV catheter with in-line valve and methods related thereto

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795872A (en) * 1972-09-18 1974-03-05 Bell Telephone Labor Inc Protection scheme for clock signal recovery arrangement
US3803568A (en) * 1973-04-06 1974-04-09 Gte Automatic Electric Lab Inc System clock for electronic communication systems
US3974333A (en) * 1975-09-24 1976-08-10 Bell Telephone Laboratories, Incorporated Adaptive synchronization system
US4019143A (en) * 1976-05-10 1977-04-19 Bell Telephone Laboratories, Incorporated Standby apparatus for clock signal generators
JPS5346216A (en) * 1976-10-08 1978-04-25 Nec Corp Time sharing multiplex commnicating unit
US4144448A (en) * 1977-11-29 1979-03-13 International Business Machines Corporation Asynchronous validity checking system and method for monitoring clock signals on separate electrical conductors
JPS5582550A (en) * 1978-12-15 1980-06-21 Fujitsu Ltd Digital radio unit
DE2907608A1 (de) * 1979-02-27 1980-08-28 Siemens Ag Schaltungsanordnung zur takterzeugung in fernmeldeanlagen, insbesondere zeitmultiplex-digital-vermittlungsanlagen
US4282493A (en) * 1979-07-02 1981-08-04 Motorola, Inc. Redundant clock signal generating circuitry
JPS5631248A (en) * 1979-08-22 1981-03-30 Fujitsu Ltd Synchronizing system
JPS5689148A (en) * 1979-12-21 1981-07-20 Fujitsu Ltd Radio device of switching without instantaneous break

Also Published As

Publication number Publication date
EP0110648A1 (de) 1984-06-13
US4574377A (en) 1986-03-04
JPS5997245A (ja) 1984-06-05
JPH0119781B2 (de) 1989-04-13
EP0110648B1 (de) 1987-03-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee