In-vehicle device controller
US8860550B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Nov 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00333
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An in-vehicle device controller includes: an in-vehicle unit for controlling an in-vehicle device; and a portable device. The in-vehicle unit includes a request signal transmitter for transmitting a request signal including random information to the portable device. The portable device transmits a response signal in response to the request signal at multiple frequencies according to a switching pattern corresponding to a part of the random information. The in-vehicle unit further includes: a frequency specifying device for specifying the switching pattern based on the part of the random information; and a reception determination device for executing a reception determination process of the response signal based on a specified switching pattern. The in-vehicle device identifies the portable device according to the reception determination process, and controls the in-vehicle device according to an identification of the portable device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.