Space identification system
US7062280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2002 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Jul 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
System and method for identifying various types of room facilities to find out and take into account space information. A tag of a space (S2) is included in the fluctuation of the intensity of the light emitted by a lamp (LF1) provided in the space in question. The receivers included in the system are arranged e.g. in commercial mobile stations (R1). These are provided with a light detector and with a DSP algorithm that analyses the signal given by said light detector. As a result of the analysis, for instance the mobile station is automatically switched off when entering the space in question. There is neither needed a separate transmitter nor separate energy supply arrangements to send the space tag, and the space tag signal can be detected throughout said space. As regards the mobile station, the space-specific operations can be performed automatically, so that the mobile station user does not need to bother, and his possible negligence does not prevent the precautions from being executed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.