Data transmission device and data reception device using predetermined profiles
View Patent ↗A device for transmitting data to a plurality of client devices transmits the data according to a plurality of predetermined profiles. Each of the plurality of client devices is associated with at least one profile. The device includes a unit for adapting the content of the data to be transmitted as a function of the predetermined profiles by generating data groups. Each of the data groups represents the content to be transmitted according to a predetermined profile. The device also includes a unit for creating at least one data stream encapsulating the data groups adapted to the various profiles allowing the client devices to recover from the stream, the data groups adapted to their profile. The device further includes a unit for transmitting the stream created to the client devices.
1. A data transmission device for transmitting data to a plurality of client devices, the data being transmitted according to a plurality of predetermined profiles, each one of the plurality of client devices being associated with at least one of the plurality of predetermined profiles, the data transmission device comprising:
means for adapting content of the data to be transmitted as a function of the plurality of predetermined profiles by generating data groups, each one of the data groups representing the content to be transmitted according to one of the plurality of predetermined profiles;
means for creating a single data stream encapsulating the data groups adapted to the plurality of predetermined profiles so that each respective client device of the plurality of client devices is able to recover from the single data stream any of the data groups adapted to the at least one of the plurality of predetermined profiles associated with the respective client device;
means for transmitting the single data stream to the plurality of client devices; and
wherein the plurality of predetermined profiles define hierarchical levels of capabilities of the plurality of client devices and wherein one of the data groups references content of a lowest one of the plurality of predetermined profiles and at least one of the data groups comprises data for enabling modification of the data group referencing the content of the lowest one of the plurality of predetermined profiles so as to obtain other said data groups each referencing one of the plurality of predetermined profiles of a higher level.
2. The data transmission device according to claim 1 , wherein the means for creating the single data stream inserts a pointer into the data groups associated with one of the plurality of predetermined profiles, the pointer enabling reference to another one of the data groups complying with another one of the plurality of predetermined profiles.
3. The data transmission device according to claim 1 , wherein the data groups encapsulated in the single data stream are transmitted in a carousel mode.
4. The data transmission device according to claim 1 , wherein the data groups include a header comprising at least one temporal label.
5. The data transmission device according to claim 1 , wherein the means for creating the single data stream inserts a node into the data groups associated with one of the plurality of predetermined profiles, the node pointing to one of the data groups of an immediately higher one of the plurality of predetermined profiles.
6. The data transmission device according to claim 5 , wherein the node points to another data group situated in another data stream.
7. The data transmission device according to claim 1 , wherein at least one of the data groups comprises a header indicating at least the predetermined profile to which the data of the data group is adapted.
8. A method for transmitting data from a data transmission device to a plurality of client devices, the data being transmitted according to a plurality of predetermined profiles, each one of the plurality of client devices being associated with at least one of the plurality of predetermined profiles, the method comprising steps of:
adapting content of the data to be transmitted as a function of the plurality of predetermined profiles by generating data groups, each one of the data groups representing the content to be transmitted according to one of the plurality of predetermined profiles;
creating a single data stream encapsulating the data groups adapted to the plurality of predetermined profiles so that each respective client device of the plurality of client devices is able to recover from the single data stream any of the data groups adapted to the at least one of the plurality of predetermined profiles associated with the respective client device;
transmitting the single data stream to the plurality of client devices; and
wherein the plurality of predetermined profiles define hierarchical levels of capabilities of the plurality of client devices and wherein one of the data groups references content of a lowest one of the plurality of predetermined profiles and at least one of the data groups comprises data for enabling modification of the data group referencing the content of the lowest one of the plurality of predetermined profiles so as to obtain other said data groups each referencing one of the plurality of predetermined profiles of a higher level.