Title:
IN-VEHICLE DEVICE AND VEHICLE COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/078040
Kind Code:
A1
Abstract:
Provided are an in-vehicle device and a vehicle communication system capable of expanding the transmission range of a signal transmitted from a transmission antenna of the in-vehicle device. This in-vehicle device (1) transmits a signal from a plurality of first to fourth LF transmission antennas (14a, 14b, 14c, 14d) which are disposed spaced in a vehicle (C) to a portable device (5), and is provided with a transmission unit for transmitting the signal from the first to fourth LF transmission antennas (14a, 14b, 14c, 14d) such that the transmission range in which reception of the signal by the portable device (5) is possible becomes a range surrounding the vehicle. The transmission unit expands the transmission range by simultaneously transmitting the signal from at least two of the first to fourth LF transmission antennas (14a, 14b, 14c, 14d).
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Inventors:
URANO YUSUKE (JP)
INA MASAYA (JP)
INA MASAYA (JP)
Application Number:
PCT/JP2016/082516
Publication Date:
May 11, 2017
Filing Date:
November 02, 2016
Export Citation:
Assignee:
AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
B60R11/02; B60C23/04; E05B49/00; H04B1/3822; H04B7/06
Foreign References:
| JP2010236346A | 2010-10-21 | |||
| JP2005076369A | 2005-03-24 | |||
| JP2006022606A | 2006-01-26 | |||
| JP2011147104A | 2011-07-28 | |||
| JPH11324441A | 1999-11-26 | |||
| JP2009278360A | 2009-11-26 | |||
| JP2012156701A | 2012-08-16 |
Attorney, Agent or Firm:
KOHNO, Hideto et al. (JP)
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