| US 7,500,019 B2 | ||
| Methods for the insertion and processing of information for the synchronization of a destination node with a data stream crossing a basic network of heterogeneous network, and corresponding nodes | ||
| Yacine El Kolli, Rennes (France); and Cyril Bernier, Rennes (France) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Nov. 21, 2003, as Appl. No. 10/717,455. | ||
| Claims priority of application No. 02 14989 (FR), filed on Nov. 28, 2002. | ||
| Prior Publication US 2004/0246995 A1, Dec. 09, 2004 | ||
| Int. Cl. G06F 15/16 (2006.01); H04J 3/06 (2006.01) | ||
| U.S. Cl. 709—248 [370/503] | 22 Claims |
| 1. A method for the insertion of information to synchronize a destination node with a data stream transmitted from an entry
terminal in a heterogeneous network, the heterogeneous network including at least one sub-network conveying packets of a first
type and one basic network conveying packets of a second type, the entry terminal being connected to the sub-network, the
sub-network being connected to the basic network by means of an entry node forming the packets of the second type from at
least one sub-part of at least one packet of the first type, wherein the size of the useful information of packets of the
second type is independent of the size of packets of the first type,
wherein, at the occurrence of at least one predetermined event, the entry node:
forms a synchronization packet of the second type such that the beginning of useful information of the synchronization packet
corresponds to the beginning of the packet of the first type;
inserts a synchronization marker in the synchronization packet; and
modifies the size of a packet of the second type preceding the synchronization packet such that the end of the useful information
of said packet of the second type corresponds to the end of a packet of the first type.
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