Persistent image maker
US6239774A · kind A · utility
27Cited by
2References
22Claims
0Family size
Inventor
Key dates
| Filing date | Jul 6, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/32
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image-creating implement includes a plurality of light sources, such as LED's, arranged in a one-dimensional matrix. The one-dimensional matrix includes a vertical column and a plurality of horizontal rows in which each of the horizontal rows has no more than one of the light sources. The implement also includes electronic circuitry which is adapted to blink each of the light sources in a manner such that when the matrix is moved an observer thereof will observe a two-dimensional image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.