Operator responsive audio-visual teaching apparatus
US4122613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Jan 24, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B7/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A programmable, operator responsive, audiovisual teaching apparatus includes a rear screen projector for displaying visual information and an audio reproduction unit providing correlated audiovisual presentations in a sequence corresponding to a branched learning format. A microfiche storage element is provided with a plurality of informational units to be projected toward the screen, each unit including a visual portion, an encoded data portion, and an optical sound track portion. The coded data portion is projected onto a plurality of photodetectors mounted adjacent the screen and the optical sound track is projected onto a movable sound track transducer which provides the audio presentation. A plurality of manually operable switches are provided on the apparatus for selective actuation by the operator in an attempt to select a proper response to the audiovisual presentation. The photodetectors are connected to correlating circuitry which is operable in two modes, an auto step mode, in which the informational unit is presented and then automatically moved to present a sequential programmed informational unit, or a responsive mode, in which the informational unit is presented whic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.