Global Patent Index - EP 1074105 A1

EP 1074105 A1 2001-02-07 - METHOD FOR FRAME SYNCHRONIZATION IN A TIME MULTIPLEX SYSTEM

Title (en)

METHOD FOR FRAME SYNCHRONIZATION IN A TIME MULTIPLEX SYSTEM

Title (de)

VERFAHREN ZUR RAHMENSYNCHRONISATION IN EINEM ZEITMULTIPLEXSYSTEM

Title (fr)

PROCEDE DE SYNCHRONISATION DE TRAME DANS UN SYSTEME A MULTIPLEXAGE DANS LE TEMPS

Publication

EP 1074105 A1 (DE)

Application

EP 99924758 A

Priority

  • DE 9901008 W
  • DE 19818514 A

Abstract (en)

[origin: DE19818514A1] The invention relates to frame synchronization by a time multiplex terminal (END), wherein the position of a synchronization word (syw) is detected in a received digital character string (df). In a synchronization area located in the vicinity of the expected position (SP0), the partial strings (srg) of the character string comprising the size of the synchronization word are compared character by character with a stored sample word (vrg). A comparison is considered to be positive when differences in character between the partial string (srg) and the sample word (vrg) no longer exist as determined by a error limit (fz). The synchronization area is obtained by combining at least two synchronization windows (SF1, SF2, SF3) having different sizes and/or position and their own error limit, that is used in a partial string comparison in the synchronization window. Alternatively, the comparison is evaluated by blocks and using block-related error limits for blocks assembled on the basis of successive characters of the partial string (srg).

IPC 1-7 (main, further and additional classification)

H04J 3/06

IPC 8 full level (invention and additional information)

H04J 3/06 (2006.01); H04L 7/08 (2006.01)

CPC (invention and additional information)

H04J 3/0608 (2013.01); H04L 7/08 (2013.01)

Citation (search report)

See references of WO 9956422A1

Designated contracting state (EPC)

DE ES FR GB IT NL

EPO simple patent family

DE 19818514 A1 19991111; EP 1074105 A1 20010207; WO 9956422 A1 19991104

INPADOC legal status


2003-05-14 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021101

2001-02-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000914

2001-02-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT NL