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:
Sep. 12, 1995
Filed:
May. 17, 1994
Kaoru Adachi, Asaka, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
In a memory card control device for interfacing an electronic still camera or similar electronic equipment and a memory card removably mounted on the equipment, a data processing device operates only at a supply voltage of 5 volts while a logic circuit operates at a supply voltage of 3 volts. A first level shifter converts the level of signals output from the memory card to a level matching the logic circuit. A second level shifter converts the level of signals output from the logic circuit to 5 volts and transfers it to the processing device, while converting the level of signals output from the processing device to 3 volts and feeding it to the logic circuit. The control device accommodates various kinds of memory cards each having a particular rated supply voltage.