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:
Aug. 03, 2004
Filed:
Feb. 21, 2003
Yasuo Nekado, Kanagawa, JP;
Michio Okano, Kanagawa, JP;
Shigeru Ishimoto, Kanagawa, JP;
Mitsuru Ohno, Kanagawa, JP;
Masaaki Kusumi, Kanagawa, JP;
Sony Precision Technology Inc., Tokyo, JP;
Abstract
A position transducer capable of accurately detecting an n-bit code by a small number of ABS detectors when there is provided one ABS track. In an ABS head, the ABS detectors to are disposed for a distance &lgr; between the first ABS detector and (n+m)th ABS detector to satisfy a requirement (n−1)&lgr;+2&dgr;<&lgr; and a distance &lgr; between two successive ones of the ABS detectors to satisfy a requirement 2&dgr;<&lgr; <&lgr;−2&dgr;, so that at least one ABS detector is opposite to a stable area T in each of micro-areas at successive bits.