Stereoscopic television (unaided with lip sync) on standard bandwidth-method and apparatus
US4323920A · kind A · utility
Inventor
Key dates
| Filing date | May 19, 1980 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | May 19, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/363
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
3-D television without glasses having horizontal parallax and operating over standard single channel bandwidth is implemented by using two television cameras aligned in the same plane, a 2:1 bandwidth compression and a receiver that processes the two views one scan line at a time using successive element correlation within common scan lines to synthesize N views in-between the two received views. The television receiver/projector contains an optical scanner with a central projection lamp, N+2 small full frame Charge Couple Device Liquid Crystal Light Valve (CCDLCLV) television modulation array surfaces and is driven by N+2 views of the scene. N+2 views are sequentially projected by the optical scanner to a semi-specular screen that returns all projected light to a horizontally moving vertical aerial exit slit (having no physical properties) resulting in the accurate reconstruction of continuous scene horizontal parallax for simultaneous view by several observers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.