JPS6455692A - Memory card device - Google Patents
Memory card deviceInfo
- Publication number
- JPS6455692A JPS6455692A JP62211994A JP21199487A JPS6455692A JP S6455692 A JPS6455692 A JP S6455692A JP 62211994 A JP62211994 A JP 62211994A JP 21199487 A JP21199487 A JP 21199487A JP S6455692 A JPS6455692 A JP S6455692A
- Authority
- JP
- Japan
- Prior art keywords
- memory card
- password
- data
- password number
- writer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To protect the security of a memory card device including data of important documents, programs, or the like by providing a password number collating circuit and a gate circuit which connects the data bus, the address bus, and the control signal bus of a data memory to a reader/writer only at the time of coincidence as the result of collation. CONSTITUTION:A password number is inputted from a keyboard 3 of a reader/ writer 1, and the inputted password number is sent to a memory card 2 and is collated with the password number in a password number memory of the memory card 2. If these password numbers coincide with each other, a gate circuit 8 of the memory card 2 is opened and data is freely written in and read from the memory card 2; but if they do not coincide with each other, the gate circuit 8 is closed and data read/write is impossible to fulfil the data security protecting function. The password is collated with the password in the memory card when being only inputted from the keyboard of the reader/ writer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62211994A JPS6455692A (en) | 1987-08-26 | 1987-08-26 | Memory card device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62211994A JPS6455692A (en) | 1987-08-26 | 1987-08-26 | Memory card device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6455692A true JPS6455692A (en) | 1989-03-02 |
Family
ID=16615137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62211994A Pending JPS6455692A (en) | 1987-08-26 | 1987-08-26 | Memory card device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6455692A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6611914B1 (en) | 1998-03-06 | 2003-08-26 | Samsung Electronics Co., Ltd. | Security card check type computer security system method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6243772A (en) * | 1985-08-21 | 1987-02-25 | Casio Comput Co Ltd | Reading device for ic card |
JPS62127684A (en) * | 1985-11-29 | 1987-06-09 | Canon Inc | Card detecting device |
-
1987
- 1987-08-26 JP JP62211994A patent/JPS6455692A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6243772A (en) * | 1985-08-21 | 1987-02-25 | Casio Comput Co Ltd | Reading device for ic card |
JPS62127684A (en) * | 1985-11-29 | 1987-06-09 | Canon Inc | Card detecting device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6611914B1 (en) | 1998-03-06 | 2003-08-26 | Samsung Electronics Co., Ltd. | Security card check type computer security system method |
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