Global Patent Index - EP 0793880 A1

EP 0793880 A1 19970910 - DATA PACKET HANDLING

Title (en)

DATA PACKET HANDLING

Title (de)

PAKETDATENVERARBEITUNG

Title (fr)

MANIPULATION DE PAQUETS DE DONNEES

Publication

EP 0793880 A1 19970910 (EN)

Application

EP 96917632 A 19960703

Priority

  • GB 9514525 A 19950715
  • IB 9600640 W 19960703

Abstract (en)

[origin: WO9704553A1] A data packet handling system is provided for receiving a sequence of data packets where the first packet (EMM-G) includes coding identifying one or more of the following packets (EMM-S) as required by the system. Following receipt of the first packet (201), all subsequent packets are buffered (202, 203) whilst the first is analysed (204-6) to determine which, if any, of the following packets are required. Having made the determination, the subsequent packets are read out of the buffer (207) and those not required are discarded. The system has particular application to the handling of entitlement messages for encrypted audio/video signal broadcasts.

IPC 1-7

H04L 12/22; H04L 9/32

IPC 8 full level

H04H 1/00 (2006.01); H04H 20/00 (2008.01); H04L 9/36 (2006.01); H04L 29/06 (2006.01); H04N 5/00 (2006.01); H04N 7/16 (2006.01); H04N 7/167 (2006.01)

CPC (source: EP)

H04L 63/0457 (2013.01); H04L 63/10 (2013.01); H04N 7/163 (2013.01); H04N 7/1675 (2013.01); H04N 21/4181 (2013.01); H04N 21/4405 (2013.01); H04N 21/4623 (2013.01); H04L 2463/101 (2013.01)

Citation (search report)

See references of WO 9704553A1

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

WO 9704553 A1 19970206; EP 0793880 A1 19970910; GB 9514525 D0 19950913; JP H10505995 A 19980609

DOCDB simple family (application)

IB 9600640 W 19960703; EP 96917632 A 19960703; GB 9514525 A 19950715; JP 50647097 A 19960703