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. 10, 1999
Filed:
Sep. 25, 1996
Kenichi Hase, Yokohama, JP;
Ryutaro Horita, Yokohama, JP;
Tsuguyoshi Hirooka, Fujisawa, JP;
Haruto Katsu, Yokohama, JP;
Takashi Nara, Takasaki, JP;
Shoichi Miyazawa, deceased, late of Yokohama, JP;
Shintaro Suzumura, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Digital information including a sync data field and a user data field subsequent thereto is read from a storage media as a digital information signal in an analog signal format. The obtained signal is sampled according to a clock signal and is thereby transformed into a digital information signal in a digital format. In the sync data field, the clock signal is synchronized with the digital information signal by an analog PLL circuit. Thereafter, in the user data field, the clock signal is synchronized with the digital information signal by a digital PLL circuit.