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:
Sep. 11, 2007
Filed:
Mar. 11, 2003
Ortal Alpert, Jerusalem, IL;
Thierry Wasserman, Tel Aviv, IL;
Yair Salomon, Jerusalem, IL;
Ori Eytan, Haifa, IL;
Ortal Alpert, Jerusalem, IL;
Thierry Wasserman, Tel Aviv, IL;
Yair Salomon, Jerusalem, IL;
Ori Eytan, Haifa, IL;
Mempile Inc., Wilmington, DE (US);
Abstract
A method and apparatus for retrieving information from a three dimensional storage medium uses a three dimensional storage medium having an active medium capable of exhibiting first and second states, a data unit being represented by the ratio between the concentration of the first and second states in a given volume portion of the medium and a data sequence is represented by a sequence of data units. The active medium is irradiated with light as to concentrate light flux through a volume portion of the storage medium so as to generate in the volume portion a detectable non-linear optical response characteristic of the concentration ratio, which is detected and used for tracking.