The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2002
Filed:
May. 23, 2000
George A. L. Leenknegt, Eindhoven, NL;
Cornelius A. Hezemans, Eindhoven, NL;
Antonius H. M. Akkermans, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
Apparatus for reading and/or writing onto an information carrier includes the positioning system. The positioning system includes a drive member for moving a second part with respect to a first part and a fine-positioning member for moving a third part with respect to the second part. The positioning member also includes control means for continuously controlling the drive member in response to the orientation signal. The control means include control signal generating means for generating a control signal from the orientation signal. The control means further include a sensor for generating an auxiliary signal which is an indication for a current consumed by the drive member, and signal combination means for generating a drive voltage for the drive member in response to the control signal and the auxiliary signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile