Title:
MOBILE COMMUNICATION TERMINAL
Document Type and Number:
Japanese Patent JP2003188981
Kind Code:
A
Abstract:
To protect data stored in a storage medium except an external storage medium storing subscriber information.
When data is stored in a memory portion 6 and a memory card C2, a baseband portion 4 makes a code module 21 encode the data with an IMSI stored in an SIM card C1 as a key. The baseband portion 4 writes the encoded data in the memory portion 6 and the memory card C2. When the data is read from the memory portion 6 and the memory card C2, the baseband portion 4 makes the code module 21 decode the encoded data with the IMSI stored in the SIM card C1 as a key.
Inventors:
NISHIMURA HIROAKI
Application Number:
JP2001383379A
Publication Date:
July 04, 2003
Filing Date:
December 17, 2001
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H04L9/10; H04M1/675; H04W8/22; H04W12/02; H04L9/08; H04W88/02; (IPC1-7): H04M1/675; H04L9/08; H04L9/10; H04Q7/38
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)