Modular broadcast receiver system & method
AssigneeSony Corporation
InventorTakehiko Nakano
Life of this patent
Estimating the term…
Abstract
The construction of a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers is simplified. In a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers, of the function blocks which constitute the receiving apparatus, a block used in common irrespective of the broadcasting provider is formed as a common block, and a block different from one broadcasting provider to another is formed as an independent block. These blocks are connected to each other through an IEEE1394 interface, and the common block is shared among the plurality of blocks which are not used in common, so that a receiving process is performed.
Claims13
A digital television signal receiving system, comprising:
- a receiver, comprising
- a tuner for receiving a scrambled digital television signal;
- a demodulator for demodulating said received scrambled digital television signal;
- and
- an interface for outputting said demodulated scrambled digital television signal;
- and
- a module attachable to said receiver, comprising
- a descrambler for inputting said demodulated scrambled digital television signal;
- and
- an encryptor for encrypting said descrambled digital television signal and for outputting said encrypted digital television signal to said interface;
- wherein said receiver further comprises
- a decryptor for decrypting said encrypted digital television signal received from said module through said interface;
- a demultiplexer for receiving and demultiplexing said decrypted descrambled digital television signal;
- and
- a decoder for decoding said demultiplexed digital television signal.
A digital television signal receiver, comprising:
- a tuner for receiving a scrambled digital television signal;
- a demodulator for demodulating said received scrambled digital television signal;
- an interface for outputting said demodulated scrambled digital television signal to a descrambling module attachable to said receiver and for inputting an encrypted descrambled digital television signal from said descrambling module;
- a decryptor for decrypting said encrypted descrambled digital television signal;
- a demultiplexer for demultiplexing said decrypted descrambled digital television signal;
- and
- a decoder for decoding said demultiplexed digital television signal.
A descrambling module attachable to a digital television signal receiver, said descrambling module comprising:
- an interface for inputting a scrambled digital television signal from the receiver;
- a descrambler for descrambling said inputted scrambled digital television signal;
- and
- an encryptor for encrypting said descrambled digital television signal and for outputting said encrypted descrambled digital television signal to the receiver through said interface;
- wherein said interface is configured to input data packets extracted by the receiver and relating to a single program, and said descrambler descrambles said inputted data packets.
A method of descrambling digital television signals, comprising:
- receiving a scrambled digital television signal by a receiver;
- demodulating said received scrambled digital television signal;
- outputting said demodulated scrambled digital television signal to a descrambling module attachable to said receiver;
- descrambling said scrambled digital television signal by said module;
- encrypting said descrambled digital television signal by said module;
- outputting said encrypted digital television signal to said receiver;
- decrypting said encrypted digital television signal received from said module by said receiver;
- demultiplexing said decrypted digital television signal;
- and
- decoding said demultiplexed digital television signal.
Dependencies are inferred from the claim text.