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Liquid crystal display apparatus and its luminance control method

  • US 6,693,612 B1
  • Filed: 11/15/2000
  • Issued: 02/17/2004
  • Est. Priority Date: 11/18/1999
  • Status: Expired due to Term
First Claim
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1. The information processing apparatus having a liquid crystal display unit, comprising:

  • picture direction changing instruction inputting means for instructing change of a direction of character position displayed on said liquid crystal display unit, luminance adjusting means for setting a luminance of said liquid crystal display unit, and display unit controlling means for controlling a picture display direction in accordance with a picture display direction specified by said changing instruction inputting means and controlling said luminance adjusting means in such a manner as to be coupled with said controlling of said direction of character position, further comprising luminance storing means that includes a first storing unit for storing at least luminance information in a normal direction of character position and a second storing unit for storing luminance information in a character position upside-down inversion direction, and wherein, at the time of a displayed character position upside-down inversion, said display unit controlling means stores present luminance information into said first storing unit and reads, from said second storing unit, said luminance information at the time of said character position upside-down inversion, thereby setting said luminance adjusting means.

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