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:
Dec. 15, 2009
Filed:
Sep. 12, 2006
Hironori Tani, Daito, JP;
Ryusuke Noda, Daito, JP;
Hironori Tani, Daito, JP;
Ryusuke Noda, Daito, JP;
Funai Electric Co., Ltd, Daito-shi, JP;
Abstract
Before erasure of data, an optical head () reads file management data which manages user data from a file management data area 'A' of an optical disk (). A control unit () writes the information to a hard disc drive apparatus () and/or RAM () to save the file management data. After saving of the file management data, the optical head () writes the data for erasing the file management data into the file management data area 'A'. According to a signal from the data erasure cancel instruction key or button (), after erasure of the data, the control unit () reads the saved file management data from the hard disc drive apparatus () and/or RAM (). The optical head () writes the file management data into the file management data area “A” of the optical disc () so as to be returned. Thus, even after data erasure processing, the user use the user data again before erasure by using the file management data.