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. 16, 2004
Filed:
Mar. 07, 2001
Carl P. Taussig, Redwood City, CA (US);
Josh N Hogan, Los Altos, CA (US);
Richard E Elder, Palo Alto, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
An electrical marking device is disposed on at least one layer of a data storage array having multiple layers of data storage medium. The marking device comprises at least one display layer that may be visually altered to display information, such as the nature, subject matter, and content of the data and amount of memory storage used. The display layer comprises a plurality of data storage cells, wherein the visual appearance of each of the data storage cells is varied depending on the value of the data bit. A method is also provided for electrically marking the content of an electrical data storage device having a storage array unit with multiple layers of data storage medium. Data is stored on an outermost layer of the data storage array to electrically provide a visual display indicating information about the stored data.