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. 10, 2002
Filed:
Jan. 19, 1999
Takehiko Numata, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A storage unit optically reproduces information from an optical recording medium of a type having a control region which is prerecorded with control information with an embossed shape and a data region in which data is recorded optically. The control information includes medium information peculiar to the recording medium, and the control region and the data region have mutually different recording densities. The storage unit is provided with a control device for switching a frequency of a read clock which is used when reproducing the control information and the data from the optical recording medium between a case where the control information is reproduced and a case where the data is reproduced.