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. 04, 2003
Filed:
Oct. 02, 2000
Toshiro Tanikawa, Saitama-ken, JP;
Hidehiro Ishii, Saitama-ken, JP;
Tadashi Noguchi, Saitama-ken, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
There are provided an information recording medium, and a method and system for reading and writing information thereon, which make it possible to facilitate recording by rewriting in use of the rewritable DVD repeatedly by rewriting. When one piece of or a plurality of pieces of program data VRO having already been recorded in a real-time data recording area A is reproduced, history management information indicating that the program data has been reproduced is recorded in a predetermined management information recording area A of the rewritable DVD, corresponding to the aforementioned one piece of or the aforementioned plurality of pieces of the program information. Moreover, when other program data is recorded, the other program data is adapted to overwrite automatically the program data VRO, having been already recorded, corresponding to the history management information recorded in the management information recording area A