Patents by Inventor Alvert M. A. Rijckaert

Alvert M. A. Rijckaert 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).

  • Magnetic-tape apparatus, having means for optimizing tape speed
    Patent number: 4816927
    Abstract: Rotatable head support (6) carries at least one magnetic head (7) which scans the tracks of a magnetic tape (1) guided across an arcuate guide surface (5) over an angle smaller than 180.degree.. The angle of inclination (.alpha.) of a head relative to a reference plane (100) is adjustable by a rack (13) and a pinion (15) to enable the tracks (26) to be followed at tape speeds (n.multidot.V.sub.0) which vary relative to a nominal tape speed (V.sub.0). Tape speed detection means (22) derive a control signal used to adjust the angle of inclination (.alpha.) in conformity with a formula containing the playback factor (n) and other parameters in order to enable a comparatively high tape speed (n.multidot.V.sub.0) to be used, starting from a specific maximum acceptable tracking error.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: March 28, 1989
    Assignee: U.S. Philips Corp.
    Inventors: Alvert M. A. Rijckaert, Joannes A. E. Van Der Kop