Title:
車両用通信システム及び車載機
Document Type and Number:
Japanese Patent JP6673155
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a communication system for a vehicle and an on-vehicle unit.SOLUTION: A communication system for a vehicle comprises an on-vehicle unit for periodically transmitting a signal from an antenna mounted on the vehicle, and a portable unit for receiving the signal transmitted by the on-vehicle unit and transmitting a response signal corresponding to a received signal. The system includes a rotation drive part connected to the on-vehicle unit for rotating the antenna by a control operation from the on-vehicle unit. The on-vehicle unit comprises: a detection part for detecting a getting-off action of an occupant riding in the vehicle; a position detection part for detecting a position of the portable unit in a time-sequential order based on the response signal from the portable unit; a determination part for determining a direction of movement of the portable unit after the getting-off action has been detected based on a change in the time-sequential positions of the portable unit; and a control part for controlling a movement of the rotation drive part so that the antenna faces a direction corresponding to the determined direction of movement.SELECTED DRAWING: Figure 5
Inventors:
Hiroki Sakakibara
Application Number:
JP2016221586A
Publication Date:
March 25, 2020
Filing Date:
November 14, 2016
Export Citation:
Assignee:
Auto Network Technologies, Ltd.
SUMITOMO WIRING SYSTEMS,LTD.
Sumitomo Electric Industries, Ltd.
SUMITOMO WIRING SYSTEMS,LTD.
Sumitomo Electric Industries, Ltd.
International Classes:
E05B49/00; B60R25/24; G01S3/42
Domestic Patent References:
| JP2007132119A | ||||
| JP2006125983A | ||||
| JP201679749A | ||||
| JP2009101927A |
Attorney, Agent or Firm:
Hideno Kono
Nobuo Kono
Nobuo Kono