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:
Aug. 05, 2008
Filed:
Mar. 22, 2007
Yuji Nagai, Kawasaki, JP;
Chosaku Noda, Kawasaki, JP;
Akihito Ogawa, Kawasaki, JP;
Kazuto Kuroda, Kawasaki, JP;
Yuji Nagai, Kawasaki, JP;
Chosaku Noda, Kawasaki, JP;
Akihito Ogawa, Kawasaki, JP;
Kazuto Kuroda, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
Address information is formed by M wobbles (integer M is the number of wobble waves) per bit as a basic unit, and is NRZ-recorded. Also, a sync signal used in sync detection of the address information is formed by N wobbles per bit as a basic unit (integer N is the number of wobble waves and M=2N). The sync signal with such configuration (6 wobbles per bit) is recorded on the head side of the address information (12 wobbles per bit). In this way, even when external noise is large, a modulated wobble signal can be demodulated more accurately.