Patents by Inventor Meine J. P. van der Meulen

Meine J. P. van der Meulen 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).

  • Optical record carrier reader calculating track pitch and write velocity for locating read point
    Patent number: 5047999
    Abstract: In order to displace the light beam to a position on the disc determined by a given address code on an optically readable record carrier having information provided with address codes and recorded in substantially concentrical tracks for the purpose of accurate reading, the track pitch and the write velocity with which the information has been recorded on the relevant disc is determined prior to reading. The light beam is displaced from a position with a known address code successively across a given first and second number of tracks and the address code is read after each displacement. The track pitch and the write velocity are calculated from the data obtained so that the relation between the track number and the address code is accurately established.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: September 10, 1991
    Assignee: U.S. Philips Corporation
    Inventor: Meine J. P. van der Meulen