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. 16, 1999
Filed:
Feb. 14, 1996
Takahiro Nagai, Osaka, JP;
Isao Satoh, Neyagawa, JP;
Yuji Takagi, Hirakata, JP;
Yuji Hisakado, Osaka, JP;
Yoshito Aoki, Moriguchi, JP;
Shunji Ohara, Higashiosaka, JP;
Takashi Ishida, Yawata, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
An optical disk according to the present invention includes a first track having a spiral shape and a second track having a spiral shape, the first track and the second track adjoining each other, and information being recorded on or reproduced from the first track and the second track. The optical disk further includes an address region including: a first address block formed so as to be on both the first track and the second track adjoining the first track on an inner periphery side; and a second address block formed so as to be on both the first track and the second track adjoining the first track on an outer periphery side.