Television – Stereoscopic – Stereoscopic display device
Patent
1996-05-23
1998-04-21
Au, Amelia
Television
Stereoscopic
Stereoscopic display device
348 42, 348169, A04H 1300, A04H 5225
Patent
active
057423326
ABSTRACT:
The invention tracks an observer's viewing-position correctly. The viewing-position is subject to shifting swiftly in a viewing-position tracking stereoscopic-display having a time delay of the viewing-position tracking from movement of the observer's viewing-position. A viewing-position tracking stereoscopic-display includes a viewing-position sensor, first and second order differentiators for differentiating positional information of the observer's viewing-position. Gain multipliers multiply the outputs of the differentiators. Band pass filters filter the outputs of the gain multipliers. A viewing-position tracker is driven by a viewing-position tracker driver according to the positional information compensated by adding the outputs of the band pass filters. A liquid crystal projector mounted on the viewing-position tracker projects parallactical images on a lenticular screen tracking the viewing-position, compensated for the time delay, representing a stereoscopic-view of good quality even when the viewing-position of the observer is shifted swiftly.
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Japanese patent application entitled "Three Dimensional Image Display" by Hirauchi, Prov. Pub. No. 107247/89.
Imai Hiroshi
Imai Masao
Au Amelia
NEC Corporation
Vincent David R.
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