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:
Jun. 07, 1988
Filed:
Jul. 25, 1985
Applicant:
Inventor:
Johannes C Van Lier, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
358342 ; 360 73 ; 369 32 ; 369 33 ; 369 50 ; 369133 ; 369240 ;
Abstract
A video disc is provided with tracks which are arranged in a plurality of sectors. The tracks in the sectors are divided into groups each containing an integral number of video fields recorded on an integral number of tracks. The tracks within a given sector are adapted to be played back at a constant angular velocity, with the angular velocity varying inversely with the radius from sector to sector.