Picture communication apparatus
US5073926A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Jan 12, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/142
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a two-way communication system having first and second communication terminals, a telephone apparatus at each terminal for two-way telephone service and a picture communication apparatus at each terminal for providing users with visual images of each other; the picture communication apparatus includes video cameras for generating video signals to be transmitted, display apparatus for displaying the visual images, a control apparatus for controlling transmission and reception of the video signals, and a line drawing input apparatus connected to the control apparatus for generating a line signal representing the line drawing and which is transmitted with the video signals from the control apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.