Patents by Inventor Uwe Spitzenberger

Uwe Spitzenberger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical disc with sector address irregularities to prevent copying, and apparatus for recording and detecting such copy protection
    Patent number: 5930209
    Abstract: An optical disc and an optical disc recording apparatus have an improved protection against undesired or illegal copying. Information on optical discs is arranged in sectors, which each has an address label. The address value of the address labels increases linearly from the start of the disc or from the start of the program area of the disc. The address labels of specific sectors, which may have an informationless content, are given different, e.g zero, address values, which prevent copying CD-ROM discs on a standard CD-Recorder apparatus. Said address labels may be stored in the main data stream or e.g. the subcode channel of a CD system.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: July 27, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Uwe Spitzenberger, Louis M. H. Faessen