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:
May. 09, 2000
Filed:
Jul. 15, 1997
Norio Nakamura, Yokohama, JP;
Nobuyasu Goto, Fuchu, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A circuit and method for detecting an abnormality in a recording head, wherein a voltage detection circuit detects a counter electromotive voltage generated across the two terminals of a recording head to which a recording current is supplied from a recording circuit; a processing circuit generates the maximum, minimum, and mean voltages from the counter electromotive voltage; a discrimination circuit using these voltages determines whether an abnormality occurs in the recording head. An output circuit outputs the result. With this operation, an abnormality in the recording head having two terminals in an MR head can be detected with a high precision.