Title :
Multiple images viewable on twisted-nematic mode liquid-crystal displays
Author :
Wu, Chai Wah ; Thompson, Gerhard ; Wright, Steven L.
Author_Institution :
Thomas J. Watson Res. Center, IBM Res. Div., Yorktown Heights, NY, USA
Abstract :
The twisted-nematic mode liquid-crystal display (LCD) display used in most laptop computers has the property that the luminance and color changes dramatically as the viewing angle changes. The present paper utilizes this property to embed several images into the LCD display that are viewable depending on the viewing angle. Applications include improving the viewing angle characteristics of LCD displays.
Keywords :
data encapsulation; image coding; laptop computers; liquid crystal displays; nematic liquid crystals; color; data hiding; error diffusion; image embedding; image halftoning; laptop computers; liquid-crystal displays; luminance; multiple image viewing; twisted-nematic mode LCD; viewing angle; viewing angle characteristics; Application software; Computer displays; Computer errors; Gray-scale; Liquid crystal devices; Liquid crystal displays; Pixel; Portable computers; Signal processing algorithms;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2003.814394
