Receiving apparatus and power control method
AssigneeSony Corporation
InventorsKen Tamayama, Hiroshi Adachi
Life of this patent
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Abstract
A receiving apparatus and a power control method that permit standby power consumption to be reduced. If a Digital Signal Processor (DSP) stores an Entitlement Management Message (EMM), which is contained in a MPEG transport stream (MPEG TS) packet, in a memory, the DSP supplies a startup signal to a human interface (HI) microcomputer. According to the startup signal from the DSP, the HI microcomputer supplies power to a back-end portion to start up a main microcomputer, which causes the main microcomputer to initiate processing.
Claims10
A receiving apparatus for receiving a transport stream transmitted from another apparatus, comprising:
- receiving means for receiving said transport stream;
- extracting means for extracting a given transport-stream packet from said transport stream received by said receiving means;
- storing means for storing individual information contained in said transport stream on the basis of a result of extraction by said extracting means;
- transmitting means for transmitting a control signal so as to supply power to a given circuit when said individual information is stored in said storing means;
- and
- control means for controlling supply of power to said given circuit according to said control signal transmitted by said transmitting means,
- wherein:
- said individual information contained in said transport stream is sequentially accumulated into said storing means on the basis of a result of extraction by said extracting means;
- and
- said transmitting means transmits said control signal to said given circuit when a capacity of said storing means exceeds a given value.
A power control method for a receiving apparatus for receiving a transport stream transmitted from another apparatus, said power control method comprising:
- a receiving step of receiving said transport stream;
- an extracting step of extracting a given transport-stream packet from said transport stream received by processing in said receiving step;
- a storing control step of controlling storing of individual information contained in said transport stream on the basis of a result of extraction in said extracting step;
- a transmitting step of transmitting a control signal so as to supply power to a given circuit when the storing of said individual information is controlled by processing in said storing control step;
- and
- a control step of controlling supply of power to said given circuit according to said control signal transmitted by processing in said transmitting step,
- wherein:
- said individual information contained in said transport stream is sequentially accumulated on the basis of a result of extraction in said extracting step;
- and
- in said transmitting step, said control signal is transmitted to said given circuit when a storing capacity in said storing control step exceeds a given value.
Dependencies are inferred from the claim text.