Removable memory device for portable terminal device
First Claim
Patent Images
1. A removable memory device comprising:
- an input port which is connectable to a portable terminal device, for receiving a first command and a first password through the portable terminal device when the removable memory device is connected to the portable terminal device;
a storage for storing information for operating the portable terminal device and a second password; and
a control unit responsive to the first command and the first password input from said input port, for protecting information stored in said storage according to the first command to prevent unauthorized access when the first password is not coincident with the second password stored in said storage, said input port, storage and control unit physically part of said removable memory device so as to be removable from said portable terminal device with said removable memory device, wherein said control unit erases the information stored in said storage, when the removable memory device is removed from the portable terminal device without coincidence of the first password and the second password.
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Abstract
A removable memory device includes a memory for storing individual information therein, and a memory manager for protecting the memory when the removable memory device is not connected to a portable terminal device and for allowing access thereto when the removable memory device is connected to the portable terminal. A controller physically part of the removable memory device, is used for detecting an interconnection with the portable terminal device and for controlling the memory manager. The removable memory device protects the individual information stored within it from being illegally used.
67 Citations
14 Claims
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1. A removable memory device comprising:
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an input port which is connectable to a portable terminal device, for receiving a first command and a first password through the portable terminal device when the removable memory device is connected to the portable terminal device;
a storage for storing information for operating the portable terminal device and a second password; and
a control unit responsive to the first command and the first password input from said input port, for protecting information stored in said storage according to the first command to prevent unauthorized access when the first password is not coincident with the second password stored in said storage, said input port, storage and control unit physically part of said removable memory device so as to be removable from said portable terminal device with said removable memory device, wherein said control unit erases the information stored in said storage, when the removable memory device is removed from the portable terminal device without coincidence of the first password and the second password. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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a first terminal device having a first data input/output port and operated based on individual information, wherein a first command and a first password are output from the first data input/output port; and
a removable memory device connected to said first terminal device, for storing the individual information, wherein said removable memory device comprises;
an input port connected to the first data input/output port, for receiving the first command and the first password through the first data input/output port, and a control unit responsive to the first command and the first password from said input port, for protecting the individual information stored in the removable device according to the first command to prevent unauthorized access when the first password is not coincident with a second password stored in said removable memory device, said input port and control unit physically part of said removable memory device so as to be removable from said first terminal device with said removable memory device. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification