Methods and apparatus for generating light patterns responsive to audio frequency input signals
US4887197A · kind A · utility
27Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Apr 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/811
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are disclosed for reflecting a laser beam so that it traverses a path on a display surface defining a visible display pattern responsive to an audio frequency input signal. The input signal is provided to a speaker, and the laser beam reflects off a front surface mirror, mounted onto the speaker so that the mirror vibrates responsive to the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.