Education and demonstration – Means for demonstrating apparatus – product – or surface...
Patent
1988-06-20
1989-07-11
Picard, Leo P.
Education and demonstration
Means for demonstrating apparatus, product, or surface...
353 31, 353 42, 353122, 353DIG3, 340707, 364520, G03B 2100
Patent
active
048466948
ABSTRACT:
Apparatus for demonstrating the use of a computer terminal comprises a projection module supported on a standard overhead projector. The projection module includes a frame which is adapted to rest on an illumination window of the overhead projector. A transmissive liquid crystal display is mounted in the frame parallel to the illumination window such that an image on said liquid crystal display is projected by the projector. A transparent touch screen is also mounted in the frame overlaying the liquid crystal display. By means of a stylus, a user touches the touch screen and thereby designates desired text and/or images for subsequent display. Coupled to the decoder is a computer which retrieves the desired text and/or images which are then transmitted to a display driver. The aforesaid apparatus is most suited to demonstrate a computer terminal which has a touch screen for selecting text and/or images for display.
REFERENCES:
patent: 3775005 (1973-11-01), Szabo
patent: 3844650 (1974-10-01), Nicholson et al.
patent: 4222641 (1980-09-01), Stolou
patent: 4652101 (1987-03-01), Grunwald
patent: 4679909 (1987-07-01), Hamada et al.
Image Storage/Retrieval Systems, Inc.
Lipsitz Barry R.
Picard Leo P.
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