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:
Oct. 13, 1992
Filed:
Jul. 09, 1990
Shinichi Aikawa, Mitaka, JP;
Yoshiaki Sakai, Higashikurume, JP;
Teac Corporation, Tokyo, JP;
Abstract
A compatible disk drive is disclosed which is capable of writing and reading data on either of first, second and third interchangeable flexible magnetic disk cartridges of different storage capacities at first, second and third prescribed data transfer rates, respectively. The first and second disk cartridges have a first and a second capacity discriminate window, respectively, formed in different prescribed positions in their housings by way of contradistinction from each other and from the third disk cartridge which has no capacity discriminate window. The disk drive customarily employs two disk sensors for discriminating among the first, second and third disk cartridges. The invention ultilizes the binary outputs from the two disk sensors for the detection of the loading of any of the three types of disk cartridges, thereby dispensing with an additional sensor heretofore employed for that purpose.