Patents by Inventor Wilhelmus F. Fekkes

Wilhelmus F. Fekkes 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).

  • Teletext signal processing circuit for a teletext receiver
    Patent number: 4697046
    Abstract: In order to obtain fast and simple processing of a recieved page address (65, 67, 69) into a write command (95) for a multi-page memory (99) of a teletext processing circuit, a page-number memory (81) is used which can be addressed by the received page address and in which a write command for the multi-page memory is stored for the desired pages.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: September 29, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Michael P. W. Geerings, Wilhelmus J. Christis, Wilhelmus F. Fekkes, Herman J. R. Schmitz
  • Teletext device with reduced page-access time
    Patent number: 4679083
    Abstract: Arrangement for receiving and processing digital signals in teletext or associated systems, comprising a picture store and a background store, the background store being arranged immediately after the source for the digital input signals such that output signals of the background store can be applied to the customary input circuit for further processing, while the picture store is arranged after this input circuit. The background store can store at least two but preferably a larger number of pages. Because of this implementation the waiting times occurring when new pages are requested are reduced to zero or substantially zero after the first request, while no additional control actions by the user are required.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: July 7, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Herman J. R. Schmitz, Marcellinus J. J. C. Annegarn, Wilhelmus F. Fekkes