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:
May. 13, 2003
Filed:
Dec. 14, 1999
Kanzo Okada, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A recording and/or reproducing head which is small-sized and lightweight and which does not require focussing servo. In order to achieve this result, a head slider is mounted on a supporting spring movable radially of an optical disc. The head slider includes a base having a recording medium facing surface facing the optical disc, a head unit mounted to the head slider so that an optical recording and/or reproducing head will face the optical disc, a connecting unit for connecting the head unit to the air outlet side of the base, and connecting beams including electro-mechanical transducer elements. The electro-mechanical transducer elements of the beams are driven in response to the supplied driving signals to cause fine movement of the recording and/or reproducing head relative to the optical disc along the tracking direction.