Wakefulness-maintaining device and wakefulness-maintaining method
US9058737B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2012 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wakefulness-maintaining device capable of maintaining a driver's wakefulness by making the driver aware of changes in sound characteristics. A wakefulness-maintaining device (100), which maintains a person's wakefulness, wherein: a switching time control part (102) analyzes the characteristics of perceived sounds acquired by a microphone provided inside the vehicle, the perceived sounds comprising control sounds played back by the wakefulness-maintaining device (100) and environmental sounds around the person when no control sounds are being played back; an in-car sound-accumulating part (103) accumulates the perceived sounds; an acoustic pressure change-setting part (105) sets the control method to be used on the environmental sounds on the basis of the characteristics of the perceived sounds accumulated by the in-car sound-accumulating part (103); and a control sound-generating part (106) applies the control method, set by the acoustic pressure change-setting part (105), on the environmental sounds and generates control sounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.