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.

Date of Patent:
May. 04, 1999

Filed:

Jun. 25, 1997
Applicant:
Inventors:

Naruhiro Okamoto, Kyoto, JP;

Hitoshi Sahai, Kyoto, JP;

Hiroyuki Maeda, Kyoto, JP;

Assignee:

Rohm Co. Ltd., Kyoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 58 ;
Abstract

A reproducing head is moved by a moving stand along the diameter at a constant speed. At this time, an in-focus detecting circuit waits until the cancellation of the focus control. The time to the cancellation of the focus control is counted by a microprocessor. Based on the time, the microprocessor discriminates the radius of an information recorded disk.


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Okamoto, Naruhiro. (1999). Disk reproducing apparatus having a disk diameter determining function (U.S. Patent No. 5901126). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5901126

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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