MULTI-STREAM ENCRYPTION METHOD AND APPARATUS, AND HOST DEVICE FOR MULTI-CHANNEL RECORDING
First Claim
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1. A host device, comprising:
- a modulation unit to receive communication data via a multi-channel, and to demodulate and output a transport stream of the multi-channel;
a security module to receive and descramble the transport stream outputted from the modulation unit, and to encrypt the descrambled transport stream; and
a Digital Video Recorder (DVR) unit to record the encrypted transport stream.
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Abstract
A multi-stream encryption apparatus and method, and a host device for multi-channel recording of a plurality of fee-based broadcasting services in a Downloadable Conditional Access System (DCAS) are provided.
57 Citations
17 Claims
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1. A host device, comprising:
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a modulation unit to receive communication data via a multi-channel, and to demodulate and output a transport stream of the multi-channel; a security module to receive and descramble the transport stream outputted from the modulation unit, and to encrypt the descrambled transport stream; and a Digital Video Recorder (DVR) unit to record the encrypted transport stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multi-stream encryption apparatus, comprising:
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a multiplexing unit to multiplex a descrambled transport stream of a multi-channel into a multi-stream; a filter unit to filter a TS packet of the multiplexed multi-stream; an encryption unit to encrypt the multiplexed multi-stream; a demultiplexing unit to demultiplex the encrypted multi-stream based on the multi-channel; and a counter unit to generate a clock counter for compensating for a jitter of a PCR with respect to the descrambled transport stream of the multi-channel. - View Dependent Claims (15)
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16. A multi-stream encryption method, comprising:
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multiplexing a transport stream corresponding to a multi-channel into a multi-stream through a multiplexing unit; filtering a TS packet of the multiplexed multi-stream; encrypting the multiplexed multi-stream; and demultiplexing the encrypted multi-stream based on the multi-channel. - View Dependent Claims (17)
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Specification