Title:
PROXIMITY COMMUNICATION SYSTEM, PROXIMITY COMMUNICATION METHOD, DATA MANAGING APPARATUS, DATA MANAGING METHOD, RECORDING MEDIUM, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2003/065298
Kind Code:
A1
Abstract:
It is assured that any non-contact IC card allows up to eight blocks of information, which is the maximum write size at a time, to be written therein, where one block is 16 bytes as unit of reading/writing information. An arrangement of TOC (Table Of Contents) is built in the memory space of the card. When information, the size of which is beyond the maximum write size at a time, is written, a single transaction enables an associated rewriting of TOC, whereby even when the card is rejected from a writing device during a course of writing, the contents of the memory will not be destroyed. Even when data, the size of which is beyond a predetermined value, is written and the communication between devices is disconnected at any timing, an excellent data consistency can be ensured.
Inventors:
NODA TAKURO (JP)
SATO MAKOTO (JP)
SATO MAKOTO (JP)
Application Number:
PCT/JP2002/012953
Publication Date:
August 07, 2003
Filing Date:
December 11, 2002
Export Citation:
Assignee:
SONY CORP (JP)
NODA TAKURO (JP)
SATO MAKOTO (JP)
NODA TAKURO (JP)
SATO MAKOTO (JP)
International Classes:
B42D15/10; G06F12/00; G06F12/16; G06K1/12; G06K17/00; G06K19/073; G07F7/10; (IPC1-7): G06K17/00; B42D15/10; G06F12/00; G06F12/16
Domestic Patent References:
| WO2001016759A1 | 2001-03-08 |
Foreign References:
| JP2000099656A | 2000-04-07 | |||
| JPH0689371A | 1994-03-29 | |||
| FR2777371A1 | 1999-10-15 | |||
| US5933847A | 1999-08-03 |
Other References:
SUSUMU KUSAKABE: "Denshi seifu, IT sobi toshi koso no key technology 'IC card' wa mirai o do hirakuka future with IC card sony no IC card senryaku", ELECTRONICS, OHMSHA, LTD., vol. 46, no. 6, 1 June 2001 (2001-06-01), pages 37 - 40, XP002967646
SUSUMU KUSAKABE: "2000 Nen seiki goe no key technology wireless card tankentai saishin doko hen Hong Kong no kotsu kyoyo cars dystem", ELECTRONICS, OHMSHA, LTD., vol. 44, no. 3, 1 March 1999 (1999-03-01), pages 50 - 52, XP002967647
See also references of EP 1469419A4
SUSUMU KUSAKABE: "2000 Nen seiki goe no key technology wireless card tankentai saishin doko hen
See also references of EP 1469419A4
Attorney, Agent or Firm:
Yamada, Eiji (Miyata & Yamada Patent Office Ginza TK
Bldg., 1-7, Shintomi 1-chom, Chuo-ku Tokyo, JP)
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