JPS6455692A - Memory card device - Google Patents

Memory card device

Info

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
Application number
JP62211994A
Other languages
Japanese (ja)
Inventor
Toshio Tsuji
Kazuhiko Sueoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62211994A priority Critical patent/JPS6455692A/en
Publication of JPS6455692A publication Critical patent/JPS6455692A/en
Pending legal-status Critical Current

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.
JP62211994A 1987-08-26 1987-08-26 Memory card device Pending JPS6455692A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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