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:
Mar. 23, 1976
Filed:
May. 19, 1975
Applicant:
Inventors:
Klaus Peter Schmidt, Quickborn, DT;
Bernhard Hill, Hamburg, DT;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ; G11C / ;
U.S. Cl.
CPC ...
3401 / ; 350-35 ;
Abstract
The invention relates to a method of making light dot distributions for the holographic storage of binary information with the aid of electronically controlled switching masks, characterized in that the individual elements of the switching mask are modulated in their path length through fading of the interference structure in the hologram associated with said elements.