Broadcast receiving apparatus
AssigneePanasonic Corporation
InventorTakaaki Suzuki
Life of this patent
Estimating the term…
Abstract
A broadcast receiving apparatus (2100) performs descrambling implicitly during the access of scrambled information within a broadcast signal by a program. The broadcast receiving apparatus (2100) in the present invention includes a descrambler (2104) operable to perform descrambling on a per-piece of information basis. Together with executing a service including one or more pieces of information, the broadcast receiving apparatus (2100) adds a service to be executed, cancels a service to be executed, and controls descrambling of one or more pieces of information using the descrambler (2104).
Claims14
A broadcast receiving apparatus comprising:
- a receiving unit operable to receive broadcast signal;
- an application execution unit operable to execute an application included in the broadcast signal;
- a service managing unit operable to extract a service, including one or more pieces of scrambled information, in the broadcast signal received by the receiving unit;
- a service execution unit operable to execute a service including one or more pieces of scrambled information according to an execution request received;
- a descrambling unit operable to descramble said one or more pieces of scrambled information included in the service;
- a service identifier holding unit operable to hold a service identifier for identifying a service including said one or more pieces of scrambled information which the descrambling unit is descrambling;
- and
- a descrambling control unit operable to instruct the descrambling unit to start descrambling of said one or more pieces of scrambled information included in the service corresponding to service identifier held by the service identifier holding unit,
- Wherein, when the application requests the execution request of the service execution unit, and when a service according to the execution request is not the same as the service corresponding to the service identifier held by the service identifier holding unit,
- the descrambling control unit instructs the descrambling unit to terminate descrambling said one or more pieces of scrambled information included in the service corresponding to the service identifier held by the service identifier holding unit, and instructs the descrambling unit to start to descramble said one or more pieces of scrambled information included in the service according to the execution request by the application, and
- the service identifier holding unit holds a service identifier corresponding to the service according to the execution request by the application.
Dependencies are inferred from the claim text.