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:
Apr. 25, 1995
Filed:
Jul. 28, 1992
Takaaki Ashinuma, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An information recording and reproducing apparatus includes: a recording device to record information to a recording medium such as a magnetooptic disc, optical disc, or the like; a reproducing device to reproduce the information recorded to this medium; and a controller to control the recording and reproducing devices on the basis of optimum recording and reproducing conditions for the recording medium which have preliminarily been recorded in a predetermined area of the medium. The recording device includes a laser beam generator or magnetic field generator. The reproducing device includes a laser beam generator. The controller controls a strength of the laser beam or magnetic field. With this apparatus, the recording and reproducing operations for the recording medium can always be performed in an optimum state, so that the reliability of the reproduced data is improved.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile