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:
Apr. 13, 2004
Filed:
Feb. 17, 2000
Applicant:
Inventors:
Ken Kutaragi, Kanagawa, JP;
Kazuo Miura, Kanagawa, JP;
Assignee:
Sony Computer Entertainment Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 3/70 ; G11B 7/24 ; G11B 7/26 ;
U.S. Cl.
CPC ...
G11B 3/70 ; G11B 7/24 ; G11B 7/26 ;
Abstract
It is an object of the present invention to provide an optical recording medium having a new information recording part and an entertainment system employing it. According to an optical recording medium of the present invention, a new information recording part ( ) is formed on parts other than the information recordable part ( O, D, I), and information can be written, read, and erased.