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:
Nov. 29, 1994
Filed:
Dec. 10, 1993
Steven P Georgis, Boulder, CO (US);
Robert Sugar, Boulder, CO (US);
Rodney Brittner, Longmont, CO (US);
Thomas D Fox, Longmont, CO (US);
Exabyte Corporation, Boulder, CO (US);
Abstract
A system (20) and method for identification of medium (41) inserted into an information storage drive optically determines whether the medium is cleaning medium by determining the translucency of the medium. The system includes a dual infra-red LED light source (28) having a controllable intensity as well as BOT and EOT light receivers (30, 32). The medium longitudinally extends between the light source and the light receivers. A medium identification controller (48) determines the type of medium inserted into the information storage drive by progressively ramping the intensity of the light source and determining at what effective driving signal value the light receivers actually receive light through the medium, and by comparing the effective driving signal value for each receiver with a calibrated driving signal value at which the light receiver actually receives light when no medium is inserted.