Patents by Inventor Jacobus C. Schreurs

Jacobus C. Schreurs 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).

  • Device for the synchronization of digital data bursts and read apparatus comprising the device
    Patent number: 5465277
    Abstract: The invention relates to the synchronization of a local clock (VCO) with a first clock frequency (Fo) equal to that of time-spaced digital data bursts read from a record carrier which also carries a continuous digital signal (H) of a second clock frequency (F). In accordance with the invention, locking to the desired frequency is assured by a frequency comparator (FD) which detects the frequency shift between the signal (S) of the local clock (VCO) and the signal of the second clock frequency (F). The device also comprises a phase-locked loop (PD) which provides phase locking once the synchronization has locked to the correct frequency.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: November 7, 1995
    Assignee: U.S. Philips Corporation
    Inventors: Jacobus C. Schreurs, Rudolf A. Horstman