Mobile telephone using subscriber card
First Claim
1. A mobile telephone using a subscriber card for conducting telephone service by mounting a subscriber card containing a subscriber'"'"'s identification code, comprising a CPU and a memory, and being controlled programs installed in the memory, wherein said mobile telephone comprises the procedure of erasing given data stored in an internal memory of the mobile telephone from the internal memory when the subscriber card is removed after the mobile telephone is used with the subscriber card mounted.
1 Assignment
0 Petitions
Accused Products
Abstract
Private data in an EEPROM (14) is erased in a data erasing procedure when pulling out an SIM card (2) from a mobile telephone (1). Before being erased, the private data is encrypted in an encryption procedure and it is transferred and recorded to an external memory (3). The private data encrypted and recorded to the external memory can be reused when the SIM card is used in another mobile telephone. Furthermore, it is possible to prevent the external memory from being left behind when the SIM card is pulled out by interfacing a lock mechanism of a card mounting section (16) with that of a memory mounting section (17).
82 Citations
11 Claims
- 1. A mobile telephone using a subscriber card for conducting telephone service by mounting a subscriber card containing a subscriber'"'"'s identification code, comprising a CPU and a memory, and being controlled programs installed in the memory, wherein said mobile telephone comprises the procedure of erasing given data stored in an internal memory of the mobile telephone from the internal memory when the subscriber card is removed after the mobile telephone is used with the subscriber card mounted.
-
3. A mobile telephone using a subscriber card for conducting telephone service by mounting a subscriber card containing a subscriber'"'"'s identification code stored as a registered identification code, comprising a CPU and a memory, and being controlled programs installed in the memory, wherein said mobile telephone further comprises an external memory for receiving and recording a transfer of given data with being connected to the mobile telephone, wherein said mobile telephone comprises procedures of:
-
transferring and recording the given data recorded in an internal memory of the mobile telephone to said external memory; and
erasing the given data recorded in the internal memory therefrom when said subscriber card is removed after it is mounted and used. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
-
Specification