Liquid crystal display apparatus and its luminance control method
First Claim
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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Accused Products
Abstract
The information processing apparatus equipped with a liquid crystal display apparatus that is usable in the face-to-face usage style. When the display direction is switched into the facing direction and in a normal usage state, the liquid crystal display apparatus exhibits an excellent visual recognizability and complicated operations are unnecessary. The image information, the picture direction of which has been inverted upside down, is outputted from the information processing unit 2 to the display unit 1 in such a manner as to be coupled with the picture direction change instructing member 3. At the same time, the luminance information at the time of the picture upside-down inversion, which has been set in advance into the luminance adjusting member 4, is supplied to the display unit 1 so as to change the luminance simultaneously with the picture inversion. At this time, the luminance of the display unit 1 at the time of the picture upside-down inversion is changed to a higher luminance, thereby making it possible to enhance the visual recognizability from the facing side.
95 Citations
3 Claims
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1. The information processing apparatus having a liquid crystal display unit, comprising:
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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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2. The information processing apparatus having a liquid crystal display unit, comprising:
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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, wherein, at the time of restoring from said displayed character position upside-down inversion state, said display unit controlling means stores said present luminance information into said second storing unit and reads, from said first 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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3. A display controlling method in an information processing apparatus having a liquid crystal display unit, comprising the steps of:
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detecting an instruction of changing a direction of character position displayed on said liquid crystal display unit to an upside-down inversion display, transferring, to said liquid crystal display unit, display data the display direction of which has been inverted upside down, and setting a picture luminance of said liquid crystal display unit to be a higher luminance in comparison with a picture luminance in a normal character position direction, when changing said character position display direction to said upside-down inversion display, storing, into first luminance storing means, display luminance information of said display unit before said change, and making reference to display luminance information at the time of said upside-down inversion display which has been stored in second luminance storing means, and, based on said display luminance information, setting said luminance of said display unit, and, when restoring said character position display direction from said upside-down inversion display, storing, into said second luminance storing means, said display luminance information at the time of said upside-down inversion display, and making reference to said display luminance information before performing said upside-down inversion display which has been stored in said first luminance storing means, and, based on said display luminance information, performing a restoration of said luminance of said display unit.
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Specification