CONTENT PROTECTION FOR DIGITAL RECORDING

WIPO Patent Application WO2004081744

A3

Content protection for digital recording may be provided through the use of digital keys that are unique to specific devices and/or to devices associated with specific household and/or business dwellings. According to an exemplary embodiment, a method (400) for enabling digital recording using a signal receiving apparatus and a digital recording apparatus is provided. The method (400) includes steps of receiving a digital key unique to the signal receiving apparatus (410), receiving broadcast signals (420), encrypting the broadcast signals using the digital key to generate encrypted digital data (430), and providing the encrypted digital data to the digital recording apparatus (440).

JP6538019	Information processing equipment, authorization system, information processing method and program
JP4695617	Encrypted data processing method
JP4941548	Security data transmission / reception system and method

LANKFORD DOUGLAS EDWARD (US)
WEHMEYER KEITH REYNOLDS (US)
DERRENBERGER MIKE ARTHUR (US)
BRIDGEWATER KEVIN ELLIOTT (US)
HORLANDER THOMAS EDWARD (US)
PERKINS RUSSELL W (US)

PCT/US2004/007276

November 11, 2004

March 10, 2004

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THOMSON LICENSING SA (FR)
LANKFORD DOUGLAS EDWARD (US)
WEHMEYER KEITH REYNOLDS (US)
DERRENBERGER MIKE ARTHUR (US)
BRIDGEWATER KEVIN ELLIOTT (US)
HORLANDER THOMAS EDWARD (US)
PERKINS RUSSELL W (US)

G06F21/60; G06F21/62; H04N5/00; H04N5/913; H04N5/765; H04N5/775; H04N5/781; H04N5/782; (IPC1-7): H04N5/913

WO2002029566A1

2002-04-11

EP1211898A2	2002-06-05
EP1187391A2	2002-03-13
EP1265440A1	2002-12-11
US20030077074A1	2003-04-24

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