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:
Dec. 06, 1983
Filed:
Jul. 13, 1981
Dennis G Howe, Pittsford, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
In accordance with the present invention, methods and apparatus are provided for making optical disk recordings having marks in radial format, representing information signals, of total fractional bandwidths greater than about 3 wherein information is recorded along constant width tracks irrespective of the radial position of recording. Specifically, constant track width recording is achieved by controlling the various recording parameters (recording spot size, tangential velocity of the optical disk, and the modulation of the recording spot) such that the optical disk receives approximately the same maximum energy density during recording of all information marks.