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. 21, 2012
Filed:
May. 09, 2005
Rajeev Y. Nagar, Sammamish, WA (US);
Garret J. Buban, Carnation, WA (US);
Yoshiho Gotoh, Osaka, JP;
Sarosh C. Havewala, Redmond, WA (US);
Ravinder S. Thind, Kirkland, WA (US);
Vishal V. Ghotge, Seattle, WA (US);
Rajeev Y. Nagar, Sammamish, WA (US);
Garret J. Buban, Carnation, WA (US);
Yoshiho Gotoh, Osaka, JP;
Sarosh C. Havewala, Redmond, WA (US);
Ravinder S. Thind, Kirkland, WA (US);
Vishal V. Ghotge, Seattle, WA (US);
Panasonic Corporation, Osaka, JP;
Microsoft Corporation, Redmond, WA (US);
Abstract
A file system which is enabled to use a Metadata Partition instead of VAT for write-once discs, is provided by a pseudo-overwrite method. On applying this invention to a drive apparatus which supports pseudo-overwrite media, the file system distinguishes data to overwrite from data to append. When the data is newly written to a logical sector, the drive apparatus writes the data to a physical sector to which the logical sector corresponds. When the logical sector is overwritten the data is written to another unrecorded physical sector in the volume space, and remapping information that specifies the original address, and the remapping address are stored in the remapping table.