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:
Jan. 15, 2013
Filed:
Sep. 29, 2009
Osamu Kawamae, Yokohama, JP;
Taku Hoshizawa, Zushi, JP;
Harukazu Miyamoto, Higashimurayama, JP;
Shigeki Taira, Yokohama, JP;
Yukari Katayama, Chigasaki, JP;
Osamu Kawamae, Yokohama, JP;
Taku Hoshizawa, Zushi, JP;
Harukazu Miyamoto, Higashimurayama, JP;
Shigeki Taira, Yokohama, JP;
Yukari Katayama, Chigasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
If a large minimum data unit for recorded data is used to record a small data amount of management information, the recording time is long, and furthermore when a WO (write once) is used as the recording medium, the number of recording operations is restricted. To solve the above problems, the present invention records data in a management area in units smaller than ordinary units for recorded data to suitably record information in a limited management area and thereby efficiently use the user data area. At that time, the present invention simplifies interleave processing usually applied to ordinary recorded data, and performs the simplified interleave processing on a data structure (for data of small size) of the present invention so as to ensure the signal processing compatibility between the ordinary data and data having the data structure according to the present invention.