System for presenting audiovisual information to an audience
US4791496A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1986 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Apr 9, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3264
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
With an audiovisual information presentation system, pictorial image data, drawn on paper sheets in advance and to be optically projected on a screen using an optical projector, is sequentially sensed by a TV camea. Speech corresponding to the image data is input through a microphone. A data storage unit stores the image data and corresponding audio data together with code data for identifying pairs of image and audio data. When a search mode is designated, a desired pair of image and audio data is automatically searched from the data storage unit under the control of a CPU, and is reproduced by electrical monitor display units and a loudspeaker unit independent of image display on the projection screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.