COPY-PROTECTED DATA CARRIER

专利名称：COPY-PROTECTED DATA CARRIER发明人：KURT, Ralph, c/o Société Civile

SPID,HENDRIKS, Robert, c/o Société CivileSPID,SETAYESH, Sepas, c/o Société CivileSPID

申请号：EP04727618.3申请日：20040415公开号：EP1618563A1公开日：20060125

摘要：The present invention relates to a data carrier comprising an information layer(1) itself comprising a specific area (4) able to deliver a first optical signal and a secondoptical signal when illuminated by a light source. Said data carrier also comprises anadditional layer (2) able to deliver an electrical signal when illuminated by the secondoptical signal, said electrical signal corresponding to a predetermined pattern. Thecombination of the first optical signal and of the electrical signal forms a cryptographickey that is required to decrypt encrypted data contained in the information layer. Thisinvention is particularly relevant to the read out of data stored on optical discs of theRead Only Memory type.

申请人：Koninklijke Philips Electronics N.V.

地址：Groenewoudseweg 1 5621 BA Eindhoven NL

国籍：NL

代理机构：Chaffraix, Jean

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