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:
Sep. 11, 2007
Filed:
Jul. 03, 2002
Shinichi Matsui, Kobe, JP;
Naohiko Noguchi, Yokohama, JP;
Mitsuhiro Sato, Atsugi, JP;
Takashi Shimojima, Tokyo, JP;
Kiichi Hasegawa, Yokohama, JP;
Norio Nakamura, Nara, JP;
Kazuya Fujimura, Ikoma, JP;
Shinichi Matsui, Kobe, JP;
Naohiko Noguchi, Yokohama, JP;
Mitsuhiro Sato, Atsugi, JP;
Takashi Shimojima, Tokyo, JP;
Kiichi Hasegawa, Yokohama, JP;
Norio Nakamura, Nara, JP;
Kazuya Fujimura, Ikoma, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A recording apparatus is provided for an SD memory card that has a plurality of EPUBxxx.KEY files recorded thereon, each file having a plurality of Key&Rule Entry areas, and an SD_EPUB.MMG file being read from the recording medium prior to the writing of data. A bitmap in SD_EPUB.MMG shows for each EPUBxxx.KEY file whether the EPUBxxx.KEY file has at least one Key&Rule Entry area not in use, or whether all the Key&Rule Entry areas are in use. Based on the bitmap in the read SD_EPUB.MMG file, the recording apparatus opens EPUB#u.KEY having an unused Key&Rule Entry area and writes data into the unused Key&Rule Entry area in the file. If all the Key&Rule Entry areas in EPUB#u.KEY become in use as a result of the writing of the data, the recording apparatus updates the bitmap in SD_EPUB.MMG.