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. 07, 1989
Filed:
Mar. 31, 1987
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a horizontal recording medium, new information can be overwritten upon old information at a low recording density without erasing the medium. In a perpendicular recording medium, on the other hand, new information is recorded at a high recording density after having erased the medium. On the basis of the above features of the horizontal and perpendicular recording mediums with different recording densities, the apparatus comprises first magnetic head with a long gap for the horizontal recording medium, a second magnetic head with a short gap for the perpendicular recording medium, and a heat selector, in order to provide a magnetic recording and reproducing apparatus compatible with both high and low recording density mediums.