Virtual push button switch
US8026827B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2009 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Apr 30, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S200/47
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A user interface display system can include at least one user responsive element. The user responsive element can include an optical mechanism. A pulsed light source can produce a light beam. Apparatus are provided for causing the light beam to repeatedly scan across the activity field. A controller can be arranged to repeatedly turn the light source on at one or more predetermined scan positions to illuminate the user responsive element. The controller can also be programed to act upon a signal regarding the status of the element. A photo detector can send the signal to the controller. The optical mechanism acts upon the light beam differently based upon the status of the user responsive element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.