Global Patent Index - EP 1254519 A2

EP 1254519 A2 2002-11-06 - METHOD AND APPARATUS FOR CORRECTION OF ERRORS IN FIRE CODES USED IN GSM CONTROL CHANNELS

Title (en)

METHOD AND APPARATUS FOR CORRECTION OF ERRORS IN FIRE CODES USED IN GSM CONTROL CHANNELS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR FEHLERKORREKTUR IN FIRE CODES IN GSM-STEUERUNGSKANÄLEN

Title (fr)

PROCEDE ET APPAREIL DE CORRECTION DES ERREURS DANS DES CODES DE LANCEMENT UTILISES DANS DES CANAUX DE COMMANDE GSM

Publication

EP 1254519 A2 (EN)

Application

EP 00949416 A

Priority

  • EP 0007308 W
  • IT MI991711 A

Abstract (en)

[origin: WO0110040A2] Method and device for decoding with error correction of a cyclic code signal r(x) containing a main error burst shorter than or equal to a number n and a secondary error shorter than or equal to a number k where k<n with the secondary burst causing in a syndrome S(x) calculated on r(x) the not zeroing of all the bits in the first n positions with the cyclic code being a shortened Fire code to supply at most a standard correction of a single burst shorter than or equal to n. According to the method the error burst correction algorithm originally proposed by Fire but modified with the error trapping procedure based on recognition of first k bits of the syndrome generated by the secondary bursts is used jointly.

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

H03M 13/00

IPC 8 full level (invention and additional information)

H03M 13/17 (2006.01)

CPC (invention and additional information)

H03M 13/618 (2013.01); H03M 13/175 (2013.01)

Citation (search report)

See references of WO 0110040A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0110040 A2 20010208; WO 0110040 A3 20020822; AU 6278200 A 20010219; CN 1399815 A 20030226; EP 1254519 A2 20021106; IT 1313315 B1 20020717; IT MI991711 A1 20010130; IT MI991711 D0 19990730

INPADOC legal status


2004-11-24 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040316

2003-05-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020228

2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI