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. 11, 2000
Filed:
Mar. 16, 1998
Yutaka Ogasawara, Yokohama, JP;
Hirotake Ando, Tokyo, JP;
Akira Miyashita, Tokorozawa, JP;
Nobuyuki Tonegawa, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An information recording and/or reproducing method and apparatus for effecting recording of data onto and/or reproducing of data from a recording medium by irradiating a desired track on the recording medium with a light beam emitted from a light source through an optical system. In the apparatus, a single processor executes an input/output control of the data for the apparatus and a power control of the light beam by interrupting the input/output control at every predetermined period. The processor inhibits the interrupt power control of the light beam in accordance with a predetermined situation.