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:
May. 25, 2004
Filed:
Sep. 26, 2000
Applicant:
Inventors:
Hideki Takahashi, Kashiwa, JP;
Kouki Tanoue, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 2/010 ;
U.S. Cl.
CPC ...
G11B 2/010 ;
Abstract
An information recording medium of this invention includes a lead-in area, data area and lead-out area and further includes a user area which is an area defined in the data area and in which user data is recorded, a list management area which is an area defined in at least one area among the lead-in area and lead-out area, for storing a spare area list for defining a spare area for compensating for a defective area existing in the user area by a preset capacity in a preset position in the data area, and a spare area defined in the data area by the spare area list stored in the list management area.