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:
Jan. 05, 1993
Filed:
Nov. 01, 1985
Neville Lee, Thousand Oaks, CA (US);
Edward V LaBudde, Newbury Park, CA (US);
Shiuh Chao, Hawthorne, CA (US);
Robert A LaBudde, Virginia Beach, VA (US);
Unisys Corporation, Detroit, MI (US);
Abstract
Recording methods, systems and media for recording and read-out with relatively low-power laser means to write digital data 'bits' (as reflectance changes) for high density computer storage. One preferred medium comprises a disk support having an 'anti-reflective' surface on which is laid a non-continuous 'information layer' adapted to absorb recording radiation (from laser beam), and so 'write' the bits, by 'agglomerating' (coalescing). The information layer exhibits suprisingly high sensitivity, apt for low power recording, and extended archival stability; more suprising, it appears to be formed without any evidence of the usual ablation, 'pit formation' or other deformation.