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:
Feb. 15, 1983
Filed:
Jun. 24, 1980
Mitsuaki Oshima, Kyoto, JP;
Yutaka Neichi, Nara, JP;
Atsushi Iga, Takatsuki, JP;
Ryoichi Wada, Habikino, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A magnetic recording and reproducing system having a magnetic switching device of the thin film type which is disposed in a magnetic head and composed of a layer which is made of a magnetic material having a low coercive force and a layer which is made of a magnetic material having a high coercive force both layers are premagnetized by a magnetizing means; the magnetic switching is effected in the magnetic switching device in response to a magnetic recorded signal located on a facing magnetic recording media so that the magnetic switching is detected as a pulse voltage by means of a detecting coil which is wound around the magnetic switching device, so as to thereby generate a reproduced output corresponding to the recorded signal.