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1. (WO1991017895) INFORMATION RECORDING SYSTEM AND MAGNETIC RECORDING MEDIUM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017895 International Application No.: PCT/JP1991/000660
Publication Date: 28.11.1991 International Filing Date: 17.05.1991
IPC:
G06K 1/12 (2006.01) ,G06K 19/12 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
1
Methods or arrangements for marking the record carrier in digital fashion
12
otherwise than by punching
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
08
using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
10
at least one kind of marking being used for authentication, e.g. of credit or identity cards
12
the marking being sensed by magnetic means
Applicants:
KABUSHIKI KAISHA CSK [JP/JP]; 6-1, Nishi-Shinjuku 2-chome Shinjuku-ku Tokyo 163, JP (AllExceptUS)
NIHON CARD CENTER KABUSHIKI KAISHA [JP/JP]; 6-1, Nishi-Shinjuku 2-chome Shinjuku-ku Tokyo 163, JP (AllExceptUS)
HORIE, Kiyoshi [JP/JP]; JP (UsOnly)
Inventors:
HORIE, Kiyoshi; JP
Agent:
MURATA, Mikio; Room 401, Kyodo Bild. Akasaka 3-1, Akasaka 4-chome Minato-ku Tokyo 107, JP
Priority Data:
2/12892618.05.1990JP
2/12892718.05.1990JP
Title (EN) INFORMATION RECORDING SYSTEM AND MAGNETIC RECORDING MEDIUM
(FR) SYSTEM D'ENREGISTREMENT D'INFORMATIONS AVEC SUPPORT D'ENREGISTREMENT MAGNETIQUE
Abstract:
(EN) A system comprises a magnetic recording medium, a writing device, and a reading device. The magnetic recording medium has a heat-treated part (5) obtained by magnetizing a magnetic layer (2) and whose surface is covered with an opaque coating layer (3) not changeable by heating. The writing device is provided with a means for forming heat-treated marks (6) having a magnetic characteristic changed by heating in the heat-treated part (5) in a predetermined pattern. The reading device reads magnetically the information written on the magnetic recording medium by the writing device. By such a configuration, the information recorded on the medium is not easily altered, and the medium is not easily forged. Also, since the pattern of the heat-treated marks (6) can be read out by a magnetic means, there is no necessity for adding a sensing means and the cost of configuring the system can be reduced.
(FR) Le système décrit comprend un support d'enregistrement magnétique, un dispositif d'écriture et un dispositif de lecture. Le support d'enregistrement magnétique comporte une partie thermotraitée (5), qu'on obtient en magnétisant une couche magnétique (2) et dont la surface est recouverte d'une couche de revêtement opaque (3) non modifiable par chauffage. Le dispositif d'écriture est pourvu d'un organe servant à former selon un motif prédéterminé des marques thermotraitées (6) dans la partie thermotraitée (5), lesquelles ont une caractéristique magnétique modifiée thermiquement. Le dispositif de lecture effectue une lecture mangétique des informations écrites sur le support d'enregistrement magnétique par le dispositif d'écriture. Grâce à une telle configuration, les informations enregistrées sur le support sont difficilement altérables et le support est difficile à contrefaire. En outre, étant donné que le motif des marques thermotraitées (6) peut être lu par un organe magnétique, il n'est pas nécessaire d'ajouter un organe capteur et les coûts de configuration du sytème peuvent être réduits.
Designated States: KR, US
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
KR1019920703348