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1. (WO1998053402) IC CARD AND IC CHIP MODULE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/053402 International Application No.: PCT/JP1998/001023
Publication Date: 26.11.1998 International Filing Date: 11.03.1998
Chapter 2 Demand Filed: 22.10.1998
IPC:
G06F 1/00 (2006.01) ,G06F 21/00 (2006.01) ,G06K 19/073 (2006.01) ,G07F 7/10 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
1
Details not covered by groups G06F3/-G06F13/82
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
21
Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19
Record carriers for use with machines and with at least a part designed to carry digital markings
06
characterised by the kind of the digital marking, e.g. shape, nature, code
067
Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards
07
with integrated circuit chips
073
Special arrangements for circuits, e.g. for protecting identification code in memory
G PHYSICS
07
CHECKING-DEVICES
F
COIN-FREED OR LIKE APPARATUS
7
Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
08
by coded identity card or credit card
10
together with a coded signal
Applicants:
ROHM CO., LTD. [JP/JP]; 21, Saiin Mizosaki-cho Ukyo-ku Kyoto-shi Kyoto 615-8585, JP (AllExceptUS)
IKEFUJI, Yoshihiro [JP/JP]; JP (UsOnly)
OKADA, Hiroharu [JP/JP]; JP (UsOnly)
Inventors:
IKEFUJI, Yoshihiro; JP
OKADA, Hiroharu; JP
Agent:
FUKAMI, Hisao ; Sumitomo Bank Minamimori-machi Building 1-29, Minamimori-machi 2-chome Kita-ku, Osaka-shi Osaka 530-0054, JP
Priority Data:
9/12830419.05.1997JP
Title (EN) IC CARD AND IC CHIP MODULE
(FR) CARTE A PUCE ET PUCE
Abstract:
(EN) An IC chip (70) provided with an unsealing sensor (84) is enclosed in an IC card (30). When the sensor (84) detects that the card (30) is unsealed, the sensor (84) gives an unsealing detect signal to a CPU (76). Upon receiving the unsealing detect signal, the CPU (76) performs predetermined processing, for example, erasure of data from a nonvolatile memory (78). Therefore, even when someone tries to check the data in the memory (78) by unsealing the card (30), he is not able to know the data. Therefore, the security of the secret information of the card (30) can be improved.
(FR) L'invention concerne une puce (70) comportant un capteur de violation (84) et incorporée à une carte à puce (30). Quand le capteur (84) détecte que la carte (30) a été violée, il transmet un signal de détection de violation à une unité centrale (76). Après réception dudit signal, l'unité centrale (76) effectue un traitement prédéterminé, consistant par exemple à effacer les données contenues dans une mémoire non volatile (78). Ainsi, même quand quelqu'un tente de lire les données dans la mémoire (78) en violant la carte (30), il ne peut pas en prendre connaissance. Ce système améliore la sécurité des informations secrètes portées par la carte (30).
front page image
Designated States: AU, CA, CN, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US6802008US20050023361AU1998063099