AU5801190A - Code-word recognition in a tdm communication system - Google Patents
Code-word recognition in a tdm communication systemInfo
- Publication number
- AU5801190A AU5801190A AU58011/90A AU5801190A AU5801190A AU 5801190 A AU5801190 A AU 5801190A AU 58011/90 A AU58011/90 A AU 58011/90A AU 5801190 A AU5801190 A AU 5801190A AU 5801190 A AU5801190 A AU 5801190A
- Authority
- AU
- Australia
- Prior art keywords
- syndrome
- bit
- code
- transmitted
- coded
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
- Error Detection And Correction (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Stereo-Broadcasting Methods (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Near-Field Transmission Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
There are time division multiplex information transmission systems in which synchronisation takes place by means of code words transmitted at regular time intervals and coded in a particular code. In systems in which the signals to be transmitted are transmitted in packets of uniform length, the code words in each case contain the information of the so-called header of a packet. The test device according to the invention tests all n-bit bit groups (Xj to Xj+n-1) beginning with an (Xj) of the successive bits of the bit sequence received successively for whether they are coded in the particular code. This is done by calculating the syndrome (S1 to Sn-k) in several parallel networks (N1 to Nn-k), each of which calculates one syndrome component. The bit sequence received is delayed until the networks have calculated the syndrome for a particular n-bit bit group and a syndrome evaluating circuit (LS) indicates, by means of the calculated syndrome, whether the bit group is a code word. <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
DE3922486 | 1989-07-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU5801190A true AU5801190A (en) | 1991-01-10 |
AU633109B2 AU633109B2 (en) | 1993-01-21 |
Family
ID=6384556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU58011/90A Ceased AU633109B2 (en) | 1989-07-08 | 1990-06-29 | Code-word recognition in a tdm communication system |
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)
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)
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 |
-
1989
- 1989-07-08 DE DE3922486A patent/DE3922486A1/en not_active Withdrawn
-
1990
- 1990-06-29 AU AU58011/90A patent/AU633109B2/en not_active Ceased
- 1990-07-03 HU HU904068A patent/HU208772B/en not_active IP Right Cessation
- 1990-07-03 CA CA002020343A patent/CA2020343C/en not_active Expired - Fee Related
- 1990-07-06 EP EP90112908A patent/EP0407903B1/en not_active Expired - Lifetime
- 1990-07-06 JP JP2177622A patent/JP2555213B2/en not_active Expired - Lifetime
- 1990-07-06 DE DE59010143T patent/DE59010143D1/en not_active Expired - Lifetime
- 1990-07-06 DK DK90112908.0T patent/DK0407903T3/en active
- 1990-07-06 AT AT90112908T patent/ATE134465T1/en not_active IP Right Cessation
- 1990-07-06 ES ES90112908T patent/ES2086333T3/en not_active Expired - Lifetime
- 1990-07-07 KR KR1019900010262A patent/KR0162647B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0407903A3 (en) | 1992-12-02 |
EP0407903B1 (en) | 1996-02-21 |
AU633109B2 (en) | 1993-01-21 |
ES2086333T3 (en) | 1996-07-01 |
HU208772B (en) | 1993-12-28 |
JP2555213B2 (en) | 1996-11-20 |
KR0162647B1 (en) | 1998-12-01 |
EP0407903A2 (en) | 1991-01-16 |
HU904068D0 (en) | 1990-12-28 |
CA2020343A1 (en) | 1991-01-09 |
DE59010143D1 (en) | 1996-03-28 |
ATE134465T1 (en) | 1996-03-15 |
DK0407903T3 (en) | 1996-06-10 |
JPH03139033A (en) | 1991-06-13 |
KR910003963A (en) | 1991-02-28 |
DE3922486A1 (en) | 1991-01-17 |
CA2020343C (en) | 1996-05-21 |
HUT57967A (en) | 1991-12-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |