Radio communication system and distance measuring method
US10139481B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2014 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Apr 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/0247
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radio communication system, in which radio communication is carried out between an in-vehicle communication device, mounted in a vehicle, and a radio communication terminal to detect a relative distance therebetween, includes an output control unit that controls a radio wave intensity of a measuring signal, which is sent from one of the in-vehicle communication device and the radio communication terminal, at a pre-set predetermined value; and a measuring unit that performs distance measuring on a vehicle side based on the radio wave intensity of the measuring signal controlled at the predetermined value or on a signal to which a value of the radio wave intensity of the measuring signal is added as information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.