DATA COMMUNICATING APPARATUS AND METHOD FOR MANAGING MEMORY OF DATA COMMUNICATING APPARATUS

Title:

DATA COMMUNICATING APPARATUS AND METHOD FOR MANAGING MEMORY OF DATA COMMUNICATING APPARATUS

Document Type and Number:

WIPO Patent Application WO/2005/066803

Kind Code:

A1

Abstract:

File systems for respective service providers are assigned to a single memory area, and a single information storage medium is shared among the plurality of providers. In the initial state, an IC card issuer manages the whole memory area. If another provider is to divide the memory area to make a new file system, it requested to acquire both a right of dividing the memory area and an authentication of the IC card issuer. After the file division, an access to the file system needs to acquire an authentication of the provider that made the file division. When utilizing any service, the user can easily use the IC card as if the IC card were issued by the corresponding provider itself.

Inventors:

KURITA TARO (JP)

Application Number:

PCT/JP2004/019202

Publication Date:

July 21, 2005

Filing Date:

December 22, 2004

Export Citation:

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Assignee:

SONY CORP (JP)
KURITA TARO (JP)

International Classes:

G06F12/14; G06F21/62; G06F21/79; G06K17/00; G06F21/60; G06K19/073; G07F7/10; G09C1/00; H04L9/10; (IPC1-7): G06F12/14; G06K17/00; G06K19/073; H04L9/10

Foreign References:

JP2002278838A	2002-09-27
JPH06222979A	1994-08-12
JPH06222980A	1994-08-12
JPH08171517A	1996-07-02
JP2001014441A	2001-01-19
JPH10105472A	1998-04-24
US20030101350A1	2003-05-29
JP2003141434A	2003-05-16

Other References: