Title:
DATA CARRIER SYSTEM
Document Type and Number:
Japanese Patent JP2002230507
Kind Code:
A
Abstract:
To provide a system using a non-contact radio data carrier capable of sending and receiving all electric waves in an effective electric wave zone.
This data carrier system is provided with the non-contact radio data carrier 3 capable of sending and receiving predetermined electric waves with an antenna 2 arranged in a predetermined position, and it is characterized by that a electric wave absorber 4 is arranged in a predetermined position near the non-contact radio data carrier 3. For example, the wave absorber 4 is arranged in a rear side of the non-contact radio data carrier 3 with respect to the antenna 2.
Inventors:
SHIMADA MASAKATSU
KOMATA TAKASHI
TOMON ISAO
KOMATA TAKASHI
TOMON ISAO
Application Number:
JP2001029730A
Publication Date:
August 16, 2002
Filing Date:
February 06, 2001
Export Citation:
Assignee:
TOYO KANETSU KK
NIPPON INFORMATION SYSTEM KK
NIPPON INFORMATION SYSTEM KK
International Classes:
G06K19/07; G06K17/00; H01Q17/00; (IPC1-7): G06K19/07; G06K17/00
Domestic Patent References:
| JPH11298489A | 1999-10-29 | |||
| JPH09330388A | 1997-12-22 | |||
| JP2000276565A | 2000-10-06 |
Attorney, Agent or Firm:
Hideki Abe (1 person outside)