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:
Jun. 23, 2009
Filed:
May. 11, 2007
Henry Patland, Los Gatos, CA (US);
Wade A. Ogle, San Jose, CA (US);
Oleg Shurygin, Cupertino, CA (US);
Ronald S. Selman, Santa Clara, CA (US);
Henry Patland, Los Gatos, CA (US);
Wade A. Ogle, San Jose, CA (US);
Oleg Shurygin, Cupertino, CA (US);
Ronald S. Selman, Santa Clara, CA (US);
Infinitum Solutions, Inc., Santa Clara, CA (US);
Abstract
A magnetic recording head tester uses closed loop control to accurately control the magnetic field that is generated to test the magnetic recording head. The closed loop control compares the value of the sensed magnetic field to the desired value of the magnetic field and adjusts the magnetic field accordingly. A magnetic field sensor used in the tester may be located in a position that has a substantially different magnetic field magnitude than is experienced by the magnetic recording head. The value of the output signal from the magnetic field sensor is correlated to the magnitude of the magnetic field at the location of the magnetic recording head through calibration. The correlation can then be used to accurately produce the desired magnitude magnetic field at the location of the magnetic recording head.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile