Combination overhead projector and electronic display device
US6474819B2 · kind B2 · utility
25Cited by
5References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Mar 21, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection display that combines both overhead projector and electronic display functionality in a single projector. This invention provides a single comprehensive solution, which addresses both overhead projection display needs, as well as electronic projection display needs and further provides a new function that allows superimposed images from the two functions to be captured and stored for future projection through the electronic display function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.