1975-04-02
1976-07-13
Grieb, Wm. H.
35 9E, G09B 506
Patent
active
039685756
ABSTRACT:
An audio visual device for teaching students a variety of subjects and motor skills, said device including a work surface, a projector, an audio device and a control package; said projector may be a movie, slide or film strip and projects onto the work surface a visual image with which the student may interact; said audio device, such as a tape recorder, provides audible instruction in synchronization with the visual image provided by the projector; said control package regulates the sequencing of the projector and the audio device in response to the student's activating a look-up button for additional information and pushing an advance button if no additional information is required and color filtering and spatial filter masking the visual image control the display of additional information to the student.
REFERENCES:
patent: 3162959 (1964-12-01), Woolman
patent: 3174231 (1965-03-01), Schure
patent: 3425148 (1969-02-01), Reese
patent: 3628255 (1971-12-01), Golden
patent: 3680224 (1972-08-01), Hall
patent: 3739069 (1973-06-01), Sandmeier
patent: R23030 (1948-08-01), Holt
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