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Journal of Display Technology

Journal of Display Technology


  • Vol. 2, Iss. 3 — Sep. 1, 2006
  • pp: 292–299

Integer Wavelets for Displaying Gray Shades in RMS Responding Displays

T. N. Ruckmongathan, U. Manasa, R. Nethravathi, and A. R. Shashidhara

Journal of Display Technology, Vol. 2, Issue 3, pp. 292-299 (2006)

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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.

© 2006 IEEE

T. N. Ruckmongathan, U. Manasa, R. Nethravathi, and A. R. Shashidhara, "Integer Wavelets for Displaying Gray Shades in RMS Responding Displays," J. Display Technol. 2, 292-299 (2006)

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  1. T. N. Ruckmongathan, "Addressing techniques for RMS responding LCDs—A review," Proc. Jpn. Display '92 (1992) pp. 77-80.
  2. K. G. Panikumar, T. N. Ruckmongathan, "Displaying gray shades in passive matrix LCDs using successive approximation," Proc. 7th Asian Symp. on Inf. Display (ASID-2002) (2002) pp. 229-232.
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