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:
Feb. 22, 1983
Filed:
Mar. 10, 1981
Applicant:
Inventors:
Istvan Gorog, Princeton, NJ (US);
Michael J Lurie, East Brunswick, NJ (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
369102 ; 369 54 ; 369116 ; 369117 ; 369118 ; 369 13 ;
Abstract
Recovery from a record of data recorded in an elongated information track, comprising undulations representative of the data is effected by an optical playback system. In the system, the data is recorded within two substantially different frequency bands. The optical playback system has a dual response characteristic to provide improved response at the two different frequency bands. A modifying means interposed in the light beam path shapes the light beam to effect this dual response characteristic (i.e., two different bandwidth responses).