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:
Nov. 05, 2002
Filed:
Dec. 15, 2000
Kazuyoshi Ishii, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide a magnetic head drive circuit or a magneto-optical recording device used with the circuit including a pair of auxiliary coils and a magnetic field generating coil for generating a magnetic field by alternately receiving electric currents flowing in opposite directions through the pair of auxiliary coils, and recording an information signal. When the recording of an information signal is stopped, a current for recording an information signal is maintained in a flowing state and gradually reduced, thereby shifting the recording toward a stop state. Thus, the voltage generated in the auxiliary coil by electromagnetic induction when the recording is stopped is reduced, the consumption of electric power is reduced, and the recording speed is improved.