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. 04, 1999
Filed:
Sep. 22, 1997
Akihiro Kikuchi, Kanagawa, JP;
Teruyuki Miyakawa, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
If a BS (bad spot) occurs when data is Written, then BST (bad spot table) is updated and registered in an EOD (end of data), thereby making it possible to carry out a recovery operation with ease in a short period of time. A data recorder for recording a DIT (directory information table) on a tape includes a data recorder body (65), a memory means (12) for temporarily memorizing the BST, a write state detecting means (17) for detecting occurrence of BS and a main control circuit (53m) serving as a control means for updating the BST each time BS occurs and controlling the data recorder (65) such that the data recorder (65) records updated DIT of at least the BST on a predetermined position of the tape when the tape is unloaded from the data recorder (65).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile