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:
Jul. 23, 1996
Filed:
Aug. 17, 1993
Shigeru Aoi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical information processing method according to the present invention includes a first step of supplying a driving current to a light source so as to emit a light beam, a second step of converging the light beam emitted from the light source and irradiating the converged light beam onto an optical recording medium, a third step of adjusting a focal point of the light beam on the medium, a fourth step of adjusting the driving current so that the power of the light beam is set to a predetermined value in a state in which the focal point was adjusted a fifth step of storing the value of the driving current which was adjusted in the fourth step, and a sixth step of supplying the current of the value stored in the fifth step to the light source so as to emit the light beam and scanning the medium by the light beam, and thereby recording, reproducing, or erasing information. An apparatus to embody the above method is also disclosed.