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:
Jan. 26, 2010
Filed:
Jun. 01, 2005
Takashi Yamada, Tokyo, JP;
Kazuyuki Yamamoto, Kanagawa, JP;
Hideaki Kumagai, Kanagawa, JP;
Toshio Mamiya, Tokyo, JP;
Takashi Yamada, Tokyo, JP;
Kazuyuki Yamamoto, Kanagawa, JP;
Hideaki Kumagai, Kanagawa, JP;
Toshio Mamiya, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
There is provided a disc drive adopting a slot-in loading by which an optical disc () is loaded into or ejected out of the device body through a disc slot. The disc drive can have loaded therein a large-diameter optical disc (A) and small-diameter optical disc (B), different in outside diameter from each other. With the small-diameter optical disc being set on a turn-table (), an objective lens () is retreated in a direction away from the signal recording surface of the small-diameter optical disc when a pickup moving mechanism () moves an optical pickup () between the outer and inner radii of the small-diameter optical disc.