The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2008
Filed:
Oct. 08, 2002
Wilhelmus Fransiscus Johannes Fontijn, Eindhoven, NL;
Antonius Adriaan Maria Staring, Eindhoven, NL;
Alexandre Sinitsyn, Eindhoven, NL;
Wilhelmus Fransiscus Johannes Fontijn, Eindhoven, NL;
Antonius Adriaan Maria Staring, Eindhoven, NL;
Alexandre Sinitsyn, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An apparatus for reading or writing user data stored block-wise in encrypted form on a storage medium. The apparatus includes a command interface for receiving and interpreting a read (or write) command. The read command includes a user data information specifying which user data are to be read. A reader reads the user data and a related encryption indicator from a block of the storage medium. The encryption indicator indicates if said user data is encrypted or not. The reader further reads a related key data identifier specifying which key data to use for decrypting the user data if said encryption indicator indicates that said user data are encrypted. A decryptor decrypts the user data using the key data.