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:
Jul. 25, 2006
Filed:
Jan. 12, 2005
Shinya Kajiyama, Tachikawa, JP;
Hiroyasu Yoshizawa, Ome, JP;
Yoichiro Kobayashi, Ome, JP;
Ichiro Somada, Hamura, JP;
Shinya Kajiyama, Tachikawa, JP;
Hiroyasu Yoshizawa, Ome, JP;
Yoichiro Kobayashi, Ome, JP;
Ichiro Somada, Hamura, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides a disk storage system with a low error rate, which is suitable for reduction in size. The other end of the signal line, which is connected with a read head at one end, is connected with a head bias circuit to apply a sense current to the read head and a pair of first and second capacitance elements for allowing the read signal element formed by the read head to pass, a loop is provided for amplifying the read signal obtained through the first and second capacitance elements by supplying the read signal to an input terminal of a differential amplifying circuit and for converting the amplified signal into the current by transconductance and providing a positive feedback of the amplified signal to the input terminal of the differential amplifying circuit.