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Patent Searching and Data


Title:
RADIO INFORMATION MEDIUM
Document Type and Number:
Japanese Patent JPH07111487
Kind Code:
A
Abstract:

PURPOSE: To find out the cause to an error when the error takes place by detecting a transmission/reception level of a radio wave.

CONSTITUTION: A reception antenna 10 used to detect a radio wave sent/7 received by a transmission reception antenna 2 is provided in an ID tag 1. A level detector 12 detects a transmission reception level of a radio wave detected by the reception antenna 10 and the transmission reception level information of the radio wave is stored in a memory 14 together with a flag representing whether the radio wave is an external radio wave or an internal radio wave. When an error takes place, the information stored in the memory 14 is read and the cause to the fault is elucidated.


Inventors:
ENDO MOTONORI
HOSHINO YASUKO
Application Number:
JP25423193A
Publication Date:
April 25, 1995
Filing Date:
October 12, 1993
Export Citation:
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Assignee:
NISSAN MOTOR
International Classes:
H04B17/00; G06K7/10; G06K17/00; H04B17/16; H04B17/29; (IPC1-7): H04B17/00
Attorney, Agent or Firm:
Fumio Sasashima