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:
Feb. 10, 2009
Filed:
Oct. 06, 2004
Kiyoshi Omori, Tokyo, JP;
Masayasu Ito, Chiba, JP;
Aki Yoguchi, Tokyo, JP;
Kouji Shinohara, Chiba, JP;
Akio Ishiwata, Chiba, JP;
Masaki Nagatsuka, Chiba, JP;
Toshikazu Kobayashi, Tokyo, JP;
Satoshi Mimura, Kanagawa, JP;
Satoshi Muto, Chiba, JP;
Toshisada Takada, Chiba, JP;
Kiyoshi Omori, Tokyo, JP;
Masayasu Ito, Chiba, JP;
Aki Yoguchi, Tokyo, JP;
Kouji Shinohara, Chiba, JP;
Akio Ishiwata, Chiba, JP;
Masaki Nagatsuka, Chiba, JP;
Toshikazu Kobayashi, Tokyo, JP;
Satoshi Mimura, Kanagawa, JP;
Satoshi Muto, Chiba, JP;
Toshisada Takada, Chiba, JP;
Sony Computer Entertainment, Inc., Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
There is provided a disk drive including a base chassis, a first optical pickup mechanism including a disk rotation drive disposed on the base chassis, first optical pickup unit to write and/or read data to and/or from a first optical disk and a first pickup moving mechanism to move the first optical pickup unit radially of the first optical disk, a second optical pickup mechanism disposed opposite to the first optical pickup mechanism and including a second optical pickup unit to write and/or read data to and/or from a second optical disk and a second pickup moving mechanism to move the second optical pickup unit radially of the second optical disk, and a controlling means for detecting the movement of one of the optical pickup units and moving the other optical pickup unit to make weight balancing of the base chassis. Thus, the base chassis weight is balanced while one of the two optical pickup units is being moved.