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:
Dec. 08, 1998
Filed:
Apr. 21, 1997
Applicant:
Inventors:
Hiroshi Yokota, Tokorozawa, JP;
Ryuichi Naito, Tokorozawa, JP;
Hiroyuki Hirano, Tokorozawa, JP;
Katsumi Ishii, Tokorozawa, JP;
Shinichi Naohara, Tokorozawa, JP;
Yoshifumi Tsukada, Tokorozawa, JP;
Kanya Matsumoto, Tokyo, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ; G02B / ;
U.S. Cl.
CPC ...
369219 ; 369244 ; 359814 ;
Abstract
A disc player includes at least one pickup device, which includes a pair of objective lenses for reading information from a disc. The pair of objective lenses are independently movable in the radial direction of the disc by a magnetic field generated by a common magnet.