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:
Feb. 18, 2014
Filed:
Dec. 09, 2011
Patrick Mesquita Braganca, San Jose, CA (US);
Richard Leo Galbraith, Rochester, MN (US);
Bruce Alvin Gurney, San Jose, CA (US);
Neil Smith, San Jose, CA (US);
Bruce Wilson, San Jose, CA (US);
Rehan Ahmed Zakai, San Ramon, CA (US);
Patrick Mesquita Braganca, San Jose, CA (US);
Richard Leo Galbraith, Rochester, MN (US);
Bruce Alvin Gurney, San Jose, CA (US);
Neil Smith, San Jose, CA (US);
Bruce Wilson, San Jose, CA (US);
Rehan Ahmed Zakai, San Ramon, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A method, apparatus, and system are provided for implementing spin-torque oscillator (STO) sensing with a demodulator for hard disk drives. The demodulator measures an instantaneous phase of the readback signal from a STO sensor and converts the readback signal into a signal that is proportional to the magnetic field affecting the STO frequency during a bit time. The converted signal is used for processing by conventional data detection electronics.