Management of data in a receiver/decoder
AssigneeThomson Licensing S. A.
InventorsDenis Choulette, Hongtao Liao
Life of this patent
Estimating the term…
Abstract
In order to restrict data access in a receiver/decoder, a plurality of sets of access rights are assigned to the data, each set of access rights being assigned to at least one party. The data, the sets of access rights and an identifier for each party are stored in a memory of the receiver/decoder. The identifier of a party requesting access to the data is compared with the or each identifier stored in the memory, and the party provided with the set of access rights assigned thereto in the memory of the receiver/decoder.
Claims12
A method of restricting access to data broadcast in a digital broadcast system, said method comprising:
- assigning a plurality of sets of access rights to the data, each set of access rights being assigned to at least one party;
- storing the sets of access rights and identifiers for the parties within the data;
- transmitting the data to at least one receiver/decoder;
- and
- at the receiver/decoder having a memory, downloading and storing the transmitted data in the memory of the receiver/decoder;
- comparing the identifier of a party requesting access to the data with the identifiers stored in the memory;
- and
- providing the party with the set of access rights assigned thereto in the memory of the receiver/decoder.
An apparatus for restricting access to data stored in a memory of a receiver/decoder, the data having a plurality of sets of access rights being assigned thereto, each set of access rights being assigned to at least one party, and an identifier for each party being stored in the receiver/decoder, the apparatus comprising:
- means for comparing the identifier of a party requesting access to the data with the identifiers stored in the memory;
- and
- means for providing the party with the set of access rights assigned thereto in the memory of the receiver/decoder.
A transmission system, comprising:
- means for assigning a plurality of sets of access rights to the data, each of the access rights being assigned to at least one party;
- means for storing the access rights and identifiers for the parties within the data;
- and
- means for transmitting a bitstream including said data.
Dependencies are inferred from the claim text.