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. 30, 2001
Filed:
Mar. 14, 2000
Kiyoshi Kano, Yokohama, JP;
Yasuo Ohtsuka, Chigasaki, JP;
Mikio Shiraishi, Yokohama, JP;
Toshifumi Takeuchi, Yokohama, JP;
Masafumi Nakamura, Yokohama, JP;
Masayuki Inoue, Yokohama, JP;
Yoshio Suzuki, Yokohama, JP;
Michio Miura, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A disk apparatus for use in a disk cartridge system including different types of disk cartridge. The disk cartridge system has a first disk cartridge and a second disk cartridge. The first disk cartridge including a first case having a substantially rectangular shape with first, second, third and fourth edges, and at least one of a first groove in both of the second and third edges, and a first cutout portion in both of the second and third edges and passing through a thickness of the first case. The second disk cartridge includes a second case having a substantially rectangular shape with fifth, sixth, seventh and eighth edges, the fifth edge of the second case being delimited by a fifth corner portion connecting the fifth edge and sixth edge, and at least one of a second groove located in only one of the sixth and seventh edges and a second cutout portion located in both of the sixth and seventh edges without passing through a thickness of the second case. A length, width and thickness of the first case are substantially equal to a length, width and thickness of the second case and a diameter and thickness of the first disk are substantially equal to a diameter and thickness of the second disk. The disk apparatus having a discrimination arrangement which discriminates at least one of the groove and the cutout portion.