CA2020343A1 - Time-division multiplex communication system with a synchronizing circuit at the receiving end which responds to the coding of words inserted in the transmitted information - Google Patents

Time-division multiplex communication system with a synchronizing circuit at the receiving end which responds to the coding of words inserted in the transmitted information

Info

Publication number
CA2020343A1
CA2020343A1 CA2020343A CA2020343A CA2020343A1 CA 2020343 A1 CA2020343 A1 CA 2020343A1 CA 2020343 A CA2020343 A CA 2020343A CA 2020343 A CA2020343 A CA 2020343A CA 2020343 A1 CA2020343 A1 CA 2020343A1
Authority
CA
Canada
Prior art keywords
bit
syndrome
code
responds
coding
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.)
Granted
Application number
CA2020343A
Other languages
French (fr)
Other versions
CA2020343C (en
Inventor
Bernd X. Weis
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.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
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 Alcatel NV filed Critical Alcatel NV
Publication of CA2020343A1 publication Critical patent/CA2020343A1/en
Application granted granted Critical
Publication of CA2020343C publication Critical patent/CA2020343C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/048—Speed or phase control by synchronisation signals using the properties of error detecting or error correcting codes, e.g. parity as synchronisation signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements

Abstract

There are TDM communication systems in which synchron-ization is accomplished by means of code words which are transmitted at regular time intervals and coded in a particular code. In systems where the signals are trans-mitted in packets of uniform length, each of the code words contains the information of the so-called header of a packet. The checking device according to the inven-tion successively checks all n-bit bit groups (Xj to Xj+n-1) beginning with any one (Xj) of the successive bits of the received bit sequence as to whether they are coded in a particular code. This is done by calcu-lating the syndrome (S1 to Sn-k) in several networks (N1 to Nn-k) which operate in parallel and each of which calculates one syndrome component. The received bit se-quence is delayed until the networks have calculated the syndromes for a given n-bit bit group and until a syndrome evaluation circuit (LS) indicates whether the bit group is a code word.
CA002020343A 1989-07-08 1990-07-03 Time-division multiplex communication system with a synchronizing circuit at the receiving end which responds to the coding of words inserted in the transmitted information Expired - Fee Related CA2020343C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3922486.4 1989-07-08
DE3922486A DE3922486A1 (en) 1989-07-08 1989-07-08 TIME MULTIPLEX MESSAGE TRANSMISSION SYSTEM WITH A RECEIVING-SIDE RECORDING SYSTEM RESPECTING THE CODING OF WORDS INSERTED INTO THE TRANSMITTED MESSAGE

Publications (2)

Publication Number Publication Date
CA2020343A1 true CA2020343A1 (en) 1991-01-09
CA2020343C CA2020343C (en) 1996-05-21

Family

ID=6384556

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002020343A Expired - Fee Related CA2020343C (en) 1989-07-08 1990-07-03 Time-division multiplex communication system with a synchronizing circuit at the receiving end which responds to the coding of words inserted in the transmitted information

Country Status (10)

Country Link
EP (1) EP0407903B1 (en)
JP (1) JP2555213B2 (en)
KR (1) KR0162647B1 (en)
AT (1) ATE134465T1 (en)
AU (1) AU633109B2 (en)
CA (1) CA2020343C (en)
DE (2) DE3922486A1 (en)
DK (1) DK0407903T3 (en)
ES (1) ES2086333T3 (en)
HU (1) HU208772B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632727A (en) * 1988-10-03 1997-05-27 Atrix Laboratories, Inc. Biodegradable film dressing and method for its formation
US5267249A (en) * 1991-05-09 1993-11-30 Codex Corporation Device and method for asynchronous cyclic redundancy checking for digital receivers
DE19736434C3 (en) 1997-08-21 2002-08-22 Nokia Mobile Phones Ltd Methods and devices for recognizing the position of data packets lying in a serial data reception stream

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678469A (en) * 1970-12-01 1972-07-18 Ibm Universal cyclic division circuit
IT1006135B (en) * 1973-12-27 1976-09-30 Sits Soc It Telecom Siemens CIRCUIT ARRANGEMENTS FOR CORRECTION OF THE SLIDING ERROR IN DATA TRANSMISSION SYSTEMS USING CYCLIC CODES
JPS51113506A (en) * 1975-03-31 1976-10-06 Hitachi Ltd Synchronizing equipment for digital code transmission
US4755993A (en) * 1986-07-16 1988-07-05 Northern Telecom Limited Transmission system using forward error correction
US4847877A (en) * 1986-11-28 1989-07-11 International Business Machines Corporation Method and apparatus for detecting a predetermined bit pattern within a serial bit stream
DE3707143A1 (en) * 1987-03-06 1988-09-15 Blaupunkt Werke Gmbh DEVICE FOR RECEIVING DATA
DE3735377A1 (en) * 1987-10-19 1989-04-27 Siemens Ag Method for synchronizing a time-division multiplex system for a transmission of packets of uniform length

Also Published As

Publication number Publication date
EP0407903B1 (en) 1996-02-21
EP0407903A2 (en) 1991-01-16
ES2086333T3 (en) 1996-07-01
CA2020343C (en) 1996-05-21
HUT57967A (en) 1991-12-30
ATE134465T1 (en) 1996-03-15
JPH03139033A (en) 1991-06-13
HU208772B (en) 1993-12-28
EP0407903A3 (en) 1992-12-02
DK0407903T3 (en) 1996-06-10
KR0162647B1 (en) 1998-12-01
HU904068D0 (en) 1990-12-28
JP2555213B2 (en) 1996-11-20
DE3922486A1 (en) 1991-01-17
KR910003963A (en) 1991-02-28
AU5801190A (en) 1991-01-10
AU633109B2 (en) 1993-01-21
DE59010143D1 (en) 1996-03-28

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