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:
May. 01, 2007
Filed:
Mar. 21, 2005
Gary Gibson, Palo Alto, CA (US);
Lennie Kiyama, Los Altos, CA (US);
Gary Gibson, Palo Alto, CA (US);
Lennie Kiyama, Los Altos, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method and apparatus for reading data bits stored on a storage medium is provided. The apparatus comprises a data probe structure including a data probe and at least one switch attached to the data probe, a controllable voltage source configured to supply voltage to the data probe structure, and a charge amplification structure configured to receive charge from the data probe structure. The controllable voltage source applies a first voltage to the data probe structure and subsequently applies a second voltage to the data probe structure, thereby causing a sense capacitance to charge and then discharge into the charge amplification structure. Certain embodiments of the design may employ dummy cells, diodes in place of switches, and may use a single line to control voltage switching. A lock-in amplifier approach is also presented.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile