Gray Shades in RMS Responding Displays With Wavelets Based on the Slant Transform

Author

Ruckmongathan, T.N. ; Nadig, Deepa S. ; Ranjitha, P.R.

Author_Institution

Raman Res. Inst., Bangalore

Volume

54

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

663

Lastpage

670

Abstract

A technique for displaying gray shades in root-mean-square responding displays is proposed. It is based on wavelets derived from a slant matrix of order 3. The authors have shown that the hardware complexity of display drivers and controller can be reduced to the same extent as that of the technique using the simple integer Haar wavelets. The number of time intervals to complete a cycle is 25 % less than that of Haar wavelets, and have also shown that it is not necessary to compute the orthogonal transform repeatedly

Keywords

Haar transforms; display devices; driver circuits; matrix algebra; mean square error methods; wavelet transforms; Haar wavelets; LCD; RMS responding displays; display controller; display drivers; gray shades; hardware complexity; liquid-crystal displays; matrix addressing; multiline addressing; orthogonal transform; root-mean-square responding displays; slant matrix; slant transform; Amplitude modulation; Brightness; Driver circuits; Electrodes; Hardware; Liquid crystal displays; Low voltage; Pulse modulation; Pulse width modulation; Wavelet transforms; Gray shades; liquid-crystal displays (LCDs); matrix addressing; multiline addressing; wavelets;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2007.892023

Filename

4142903