Patents by Inventor Ludo M. J. Stulens

Ludo M. J. Stulens 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).

  • Patent number: 5063547
    Abstract: A Compact-Disc Digital Audio player in which different users, independently of one another, can store preferred selections of specific discs in a memory. The player is adapted to identify the disc from the sub-code on the disc. In addition, a user identification can be entered in the player. The user identification and the record carrier identification are combined to form one identification code. Further, the player is adapted to detect whether for said identification code a preferred-selection program is stored in the memory and, if this is the case, to reproduce the relevant information from the disc in the sequence specified by the preferred-selection program.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: November 5, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Pieter H. Custers, Ludo M. J. Stulens