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:
Aug. 15, 1995
Filed:
May. 03, 1993
Naoki Hosaka, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
In a method of recording actual data of files on a write-once type record medium such as an optical card under the control of file management information including file name and cluster chain management information, the file management information is first read out of a file management information record region of the record medium, cluster chain management information is formed in accordance with the file management information and is stored in a record area which is provided separately from said record medium, and then the actual data of a file is recorded in successive clusters in the data record region of the record medium. Further, a file name and a file length of the file and a head cluster address of the actual data of the file are recorded on the record medium. The cluster chain management information is formed on the basis of file names, file lengths and head cluster addresses read out of the record medium. It is no longer necessary to record the cluster chain management information on the record medium, and therefore the data record region of the record medium can be utilized optimally.