LOSSLESS DATA CODING FOR BIDIRECTIONAL COMMUNICATION IN A COLLABORATIVE SESSION OF MULTIMEDIA CONTENT EXCHANGE

摘要

The disclosed method for coding data includes the exchange between the transmitter and the receiver, in the course of the session, of attributes of collaboration messages that are able to be used in said session and of indices associated with these attributes. In various implementations, the attributes and their indices may be used by these pieces of equipment for updating a shared dictionary of indexed attributes. Upon coding, the attributes of the collaboration messages may be substituted with their indices; and upon decoding, the inverse operation may be carried out. The shared dictionaries may be destroyed at the end of the session.

主权项

1. A method for lossless data coding applied by a piece of transmitter equipment, in bidirectional communication with at least one piece of receiver equipment in a collaborative session of exchange of multimedia contents, this method including:
during said session, at least:
one step for exchanging, with said at least one piece of receiver equipment, at least one attribute of a collaboration message which may be used in said session and an index associated with this attribute, said attribute and its index being used by said equipment for updating a shared dictionary of indexed attributes, this dictionary being stored in memory by each of said pieces of equipment during the whole duration of the session;one step for substituting, in a collaboration message intended to be sent to said at least one piece of receiver equipment, at least one attribute with its index in said shared dictionary:one step for sending said collaboration message to said at least one piece of receiver equipment; and one step for destroying said shared dictionary at the end of said session.