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. 26, 1993
Filed:
Apr. 26, 1990
Kazuhiro Hayamizu, Hashima, JP;
Brother Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
In a data processing device capable of attachably and detachably providing an external memory unit to which data are written and from which data are read, the external memory unit being capable of storing data even when it is not provided on the data processing device, provided are discriminating means for discriminating whether the external memory unit is provided on the data processing device, judging means for judging whether predetermined kind of data are stored in the external memory unit in case that it is discriminated that the external memory unit is provided on the data processing device, and another judging means for judging at least whether the predetermined kind of data stored in the external memory unit are operable in case that it is judged by the judging means that the predetermined kind of data are stored in the external memory unit. Thus, since a conventional check operation for the external memory unit is not executed, in the data processing device according to the present invention, when the predetermined kind of data are stored, the predetermined kind of data are not destroyed.
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