Title :
Integer wavelets for displaying gray shades in RMS responding displays
Author :
Ruckmongathan, T.N. ; Manasa, U. ; Nethravathi, R. ; Shashidhara, A.R.
Author_Institution :
Raman Res. Inst., Bangalore
Abstract :
A large number of gray shades can be displayed in rms responding displays by using integer wavelets. The technique is demonstrated by displaying 64 gray shades in a twisted nematic liquid crystal display. We have reduced the hardware complexity of the display drivers by adding a few analog multiplexers that are common to a large number of stages (one for each output) in the drivers. A simple controller was implemented in a low cost complex programmable logic device
Keywords :
driver circuits; liquid crystal displays; multiplexing equipment; nematic liquid crystals; programmable logic devices; wavelet transforms; RMS responding displays; analog multiplexers; complex programmable logic device; display drivers; gray shades; hardware complexity reduction; integer wavelets; twisted nematic liquid crystal display; Amplitude modulation; Costs; Drives; Hardware; Helium; Liquid crystal displays; Multiplexing; OFDM; Programmable logic devices; Gray shades; liquid crystal displays (LCDs); matrix addressing; multi-line addressing (MLA); wavelets;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2006.878752
