Receiving device, recording and reproducing device and receiving/recording-reproducing system for digital broadcast signal

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United States of America Patent

PATENT NO 6674858
SERIAL NO

09208443

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Abstract

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A receiving device comprises a signal demodulator circuit for demodulating an encrypted video signal and attribute information including information for decoding an encryption, an attribute information identifying circuit for identifying and outputting the attribute information, and a descramble circuit for unscrambling the video signal obtained from the signal demodulator circuit, based on the output produced from the attribute information identifying circuit. A signal re-scrambled in accordance with a device ID signal is recorded in a recording and reproducing device. Further, the recording of the signal is controlled based on the output obtained from the attribute information identifying circuit.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTD6-6 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 1008280 ?1008280

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Takao Yokohama, JP 141 2154
Kimura, Hiroyuki Hiratsuka, JP 355 4348
Takeuchi, Toshifumi Ota-ku, JP 122 1431

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