Three dimensional viewing system for use with a video cassette r

Details Three dimensional viewing system for use with a video cassette r Three dimensional viewing system for use with a video cassette r

1994-07-06

1996-07-23

Hjerpe, Richard

Computer graphics processing and selective visual display system

Image superposition by optical means

Operator body-mounted heads-up display

348 56, G09G 500

Patent

active

055394230

ABSTRACT:
A three dimensional viewing system for use with a VCR for the three-dimensional viewing of an image having right-eye and left-eye subimages in alternating sequence reproduced by the VCR wherein the VCR generates a switching pulse which is in synchronization with the alternating sequence. The three dimensional system comprises a pair of three-dimensional viewing glasses having a pair of lenses made of a liquid crystal material through which the right-eye subimage and the left-eye subimage are viewed by regulating the on/off states of the lenses; a pulse generator for generating a driving pulse adapted to activate the liquid crystal material; and a mixing circuit for multiplexing the switching pulse and the driving pulse to produce an on/off driving signal divided into a first and a second driving signals that are 180 degrees out of phase with each other wherein each of the first and the second driving signals is used to regulate the on/off states of the lenses.

REFERENCES:
patent: 4021846 (1977-05-01), Roese
patent: 4772944 (1988-09-01), Yoshimura
patent: 4907860 (1990-03-01), Noble
patent: 4967268 (1990-10-01), Lipton et al.

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