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. 19, 1999
Filed:
Jun. 16, 1997
Applicant:
Inventors:
Hiroshi Tsuyuguchi, Tokyo, JP;
Mitsumasa Kubo, Tachikawa, JP;
Assignee:
Teac Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 50 ;
Abstract
A CD-ROM drive is disclosed which usually is put to use with CR-ROMs of varying qualities which may, or may not, wobble during rotation, possibly resulting in the vibration of the complete device. On being loaded into the device, therefore, each disk is rotated at increasing speed preparatory to reading. The speed of disk rotation at which vibration due to disk wobbling builds up to a prescribed limit is held as a maximum allowable speed until the disk is unloaded. The disk is subsequently read at no more than the maximum allowable speed.