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:
Apr. 05, 2005
Filed:
Sep. 25, 2002
Thierry Tellier, Grasse, FR;
Lionel Guiraud, Saint Aubin sur Mer, FR;
Joao Nuno Ramalho, Algueirao Mem-Martins, PT;
Thierry Tellier, Grasse, FR;
Lionel Guiraud, Saint Aubin sur Mer, FR;
Joao Nuno Ramalho, Algueirao Mem-Martins, PT;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
This amplifier is intended for amplifying variable signals superimposed on a continuous signal. This continuous signal serves in particular for biasing a component, a magnetoresistive resistor used as a hard disk reading head. To avoid the harmful effects of a sudden fluctuation in the continuous signal, this amplifier comprises a set of switchable reactive elements () for acting on said transfer function and a bias drift compensation circuit () for controlling the switching of said switchable elements with a view to anticipating the effects of said fluctuation.