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. 22, 1987
Filed:
Apr. 05, 1985
Christiaan Steenbergen, Colorado Springs, CO (US);
Peter G Howard, Eugene, OR (US);
Roger R Bracht, Colorado Springs, CO (US);
Henk van der Put, Colorado Springs, CO (US);
Laser Magnetic Storage International Company, Colorado Springs, CO (US);
Abstract
This invention relates to the field of radiant energy information storage devices and provides for a low reading level, an intermediate level and a high writing level of power from the radiation source so as to lower the overall power requirements of the radiation source and increase availability and accuracy of the verification read directly after or during writing, without causing unwanted damage to the information recording media. A circuit is described to accomplish this. The circuit basically employs two power sources, one for reading power, one for writing power and an intermediate ('Pedestal') circuit to employ a portion of the writing power source's power to provide the step-up in power to the intermediate level.