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:
Aug. 06, 1991
Filed:
Feb. 20, 1990
Johannes H Pasman, Eindhoven, NL;
Nicolaas C Van Hijningen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A record-carrier body is described, in which a user can record information by means of optical radiation, which record-carrier body has a relief structure of optically detectable servo-track portions and sector addresses. If the maximum width of the servo-track portions and the areas in the sector addresses is at least of the order of half the track period, the servo track portions can be tracked in an optimum manner and the sector-address areas and the information areas recorded by the user provide a read signal of high amplitude.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile