Title:
ELECTRICAL FIELD COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JP2020010230
Kind Code:
A
Abstract:
To provide an electrical field communication system capable of detecting how an object is operating by a simple configuration.SOLUTION: An entrance control system 1 is an electrical field communication system including a transmitter 10 for transmitting a signal, and a receiver unit 20 for receiving a signal from the transmitter 10 via electrical field communication through an electrical field interposed in an object, where the transmitter 10 is constituted movably in a state attached to the object or held thereon. The transmitter 10 has a signal transmission section 11 for transmitting a signal by an electrical field generated on the surface of the object by inducing an electrical field, the receiver unit 20 has a signal reception section 21 for receiving the signal transmitted by the signal transmission section 11 by the electrical field interposed on the surface of the object, and a reception state determination section 24 for determining the reception state of the signal received by the signal reception section 21. In addition to determination whether or not signal reception is possible, the reception state determination section 24 further determines the reception state capable of signal reception in multiple stages.SELECTED DRAWING: Figure 1
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| JPH11248823 | GENERATION APPARATUS FOR TONE BURST SIGNAL |
Inventors:
KOBAYASHI KAORU
AONO TAKASHI
AONO TAKASHI
Application Number:
JP2018130968A
Publication Date:
January 16, 2020
Filing Date:
July 10, 2018
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
H04B11/00; G06K7/08; H04B13/00
Domestic Patent References:
| JP2010087817A | 2010-04-15 |
Foreign References:
| WO2018020884A1 | 2018-02-01 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Tetsuo Shiba
Hayashi Ichiyoshi
Tetsuo Shiba
Hayashi Ichiyoshi