Method and apparatus for temporarily giving copy permission...

Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium

Reexamination Certificate

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Details

C360S060000, C386S349000, C386S349000

Reexamination Certificate

active

07151888

ABSTRACT:
The digital signal recording/reproducing apparatus inputs a digital signal having a control flag as to a temporary copy permission, and records the digital signal temporarily into a recording medium in accordance with conditions in the control flag, then reproducing the digital signal temporarily from the recording medium in accordance with the conditions in the control flag. The recording/reproducing of the temporary copy is permitted, depending on the following conditions: The recording medium's type, the re-producing point-in-time, the reproducing time-period, and the reproducing frequency. With this method employed, even in a program permitting no recording, the temporary recording/reproducing is permitted under a condition of being limited to the time-shift recording on the receiving side.

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Linnartz “‘The Ticket’ Concept for Copying Control Based on Embedded Signalling,” Proceedings of the European Symposium on Research in Computer Security, ESORICS 98, Louvain-la-Nueve, Belgium, Sep. 16-18, 1998 (1998).

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