Acoustic guiding system
US9076328B2 · kind B2 · utility
1Cited by
2References
4Claims
0Family size
Inventor
Key dates
| Filing date | Feb 16, 2012 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Jul 3, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R27/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An acoustic guiding system of this invention comprises: an n-phase signal wiring which contains n wire lines and a common ground where n is an integer larger than or equals to three; a sound source which generates an electric current for a signal sound; a distributer which distributes the electric current from the sound source to each line of the n-phase signal wiring repeatedly; a controller which controls the signal sound in accordance with signal information required for traffic control or the like; and speakers connected to each line of the n phase signal wiring in the order of the phase number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.