Method for transmitting layered multimedia content to heterogeneous terminals via tdm/tdma type multiplexing infrastructure and associated processing device and decoder

Abstract

A transmission device (ET) is intended to be a component of a time multiplexing (RC) transmission infrastructure with at least one channel and in different transmission time slots, of multimedia contents, such multimedia contents being arranged in at least two complementary data layers. Said device (D) is responsible, in the presence of an association of a time slot to each complementary layer constituting a channel multimedia content, i) for separating the complementary layers of each multimedia content to be transmitted, ii) for chopping up the separated complementary layers into portions of selected sizes, and iii) for incorporating each portion of a layer into a burst so as to transmit each burst during a time slot associated to the layer comprising the portion it integrates.

Description

technical field [0001] The invention relates to the transmission of so-called "layered" multimedia content by means of a multiplexed transmission infrastructure. Background technique [0002] In this context, "layered multimedia content" means a data set arranged in at least two complementary layers, eg a so-called base layer and at least one so-called enhancement layer. The base layer includes all data of the multimedia content that will enable the communication terminal to reproduce said multimedia content at the lowest quality (or resolution or resolution) level. Each enhancement layer includes another data set of said multimedia content that will enable said communication terminal to complete the entire data set of the base layer in order to reproduce the multimedia content at a higher level of quality (or resolution or resolution) . It should be understood that the first layer of multimedia content can only be used if the base layer and n-1 preceding enhancement layer...

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Problems solved by technology

On the other hand, this mode of operation is not suitable for terminals equipped with players capable of reproducing multimedia content at intermediate or minimum quality (or resolution or resolution) levels, since these terminals must reconstruct their layer that the player cannot use and thus wastes processing capacity and energy

[0013] In other words, the current mode of operation is not well suited to the infrastructure to which heterogeneous terminals can be connected (i.e. exhibit different technical characteristics such as decoding capabilities, screen resolution or memory capacity)

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