发明名称 |
Memory card control device |
摘要 |
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.
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申请公布号 |
US5450365(A) |
申请公布日期 |
1995.09.12 |
申请号 |
US19940243790 |
申请日期 |
1994.05.17 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
ADACHI, KAORU |
分类号 |
G06F1/26;G06F3/00;G06F12/00;G11C5/14;(IPC1-7):G11C7/00;G06K7/06 |
主分类号 |
G06F1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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