Sound-activated wake-up device for electronic input devices having a sleep-mode
US6756700B2 · kind B2 · utility
61Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Aug 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sound-activated wake-up device generates a wake-up signal for ending a sleep-mode in response to the sound of friction between an operating platform and an input device, or the sound of touching of the input device by the user. The wake-up device includes a sound detecting unit and a signal amplifying/comparing unit, and sound filtering structures and/or circuitry so as to prevent ambient sounds from activating the wake-up device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.