Patents by Inventor Pieter G. Van Leeuwen

Pieter G. Van Leeuwen 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: 6014415
    Abstract: In a transmission system a sequence of digital symbols including concatenated words, is transmitted by a transmitter (2) via a transmission medium (14) to a receiver (16). In order to reduce the transmission capacity no word synchronizing symbols are introduced in the sequence of digital symbols. In order to achieve word synchronization, a synchronization processor estimates the probability function of one single predetermined string as function of the position of the string in the sequence. The correct position of the words is derived from this probability function.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: January 11, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Franciscus A. Kneepkens, Pieter G. Van Leeuwen
  • Patent number: 5539340
    Abstract: A circuit for detecting pulses in an electric input signal, which pulses are superposed on a specific reference level (U.sub.ref), has an input terminal for receiving the electric input signal, at least a first and a second comparator device, switching means (S.sub.1), an output terminal and control signal generator means. The control signal generator means supply a control signal to the switching means (S1) to control the position of the switching means. The input terminal (1) is coupled to a first input of the comparator devices, whose outputs are coupled to a terminal (c and a respectively) of the switching means (S.sub.1). The output terminal (b) of the switching means is coupled to the output terminal. The first comparator device transfers only pulses whose relative amplitude in relation to the reference level exceeds a first value (U.sub.D1). The second comparator device transfers only pulses whose relative amplitude in relation to the reference level exceeds a second value (U.sub.D2).
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: July 23, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Pieter G. Van Leeuwen, Christian H. P. Baeten, Eduard Van Loo, Johannes P. M. Inghels
  • Patent number: 5317458
    Abstract: An arrangement for recording an information signal in a track (T.sub.0, T.sub.1, . . . ) on a record carrier (1), includes an input (20) for receiving the information signal, signal processing circuitry (21) for processing the information signal such that it can be recorded in the track, counting device (23) for counting and for generating an array of subsequent different count signals and for supplying the count signals to an output (24), recording apparatus (25, 26, 27) having at least one recording head (26) for recording the processed information signal in a track on the record carrier, and for recording the count signals in a track on the record carrier and a transport apparatus (34,35) for transporting the record carrier with a certain transport velocity (v.sub.t) in a longitudinal direction of the record carrier.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: May 31, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Pieter G. Van Leeuwen, Albert M. A. Rijckaert
  • Patent number: RE37817
    Abstract: An arrangement for recording an information signal in a track (T0, T1, . . . ) on a record carrier (1), includes an input (20) for receiving the information signal, signal processing circuitry (21) for processing the information signal such that it can be recorded in the track, counting device (23) for counting and for generating an array of subsequent different count signals and for supplying the count signals to an output (24), recording apparatus (25, 26, 27) having at least one recording head (26) for recording the processed information signal in a track on the record carrier, and for recording the count signals in a track on the record carrier and a transport apparatus (34,35) for transporting the record carrier with a certain transport velocity (vt) in a longitudinal direction of the record carrier.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: August 13, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Pieter G. Van Leeuwen, Albert M. A. Rijckaert