Videophone
US5079627A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1989 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Jun 29, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/142
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention, the Videophone, is a compact audio/video device that is capable of both sending and receiving audio and visual signals, and is designed to be compatible with standard telephone equipment. The Videophone includes a modified speakerphone, a camera, a viewing screen, and an imaging system based upon a revolving disk of film having a series of holographic apertures which divide the subject image into elements of light. The disk has two bands which are used to alternately scan and reproduce an image. The visual image is process by unique circuitry that can, for ease of manufacture, be contained on a single customized chip. The videophone has the capability to transmit a full motion picture of reasonably good quality. Moreover, audio transmission is not blocked during transmission of the video signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.