Color temperature correction device and display device
AssigneePanasonic Corporation
InventorTomoko Morita
Life of this patent
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Abstract
A color temperature correction device corrects, in a display device that represents brightness of RGB of a video signal by a plurality of levels of gray scales, a color temperature of the video signal. The color temperature correction device includes: a recording means of storing a gray scale value conversion table for an input gray scale value of a video signal to set gray scale values for respective RGB, so that a consistent color temperature is maintained; and a gray scale value converting unit that converts the input gray scale value to set gray scale values, based on the gray scale value conversion table.
Claims8
A color temperature correcting device that corrects, in a display device that represents brightness of RGB of a video signal by a plurality of levels of gray scales, a color temperature of the video signal, comprising:
- a storing unit operable to store a gray scale value conversion table for an input gray scale value of a video signal to set gray scale values for respective RGB, so that a consistent color temperature is maintained;
- and
- a gray scale value converting unit operable to convert the input gray scale value to set gray scale values, based on the gray scale value conversion table.
A color temperature correcting device that corrects, in a display device that represents brightness of RGB of a video signal by a plurality of levels of gray scales, a color temperature of the video signal, comprising:
- a multiplier that multiplies an input gray scale value of a video signal by a drive factor of a selected drive mode and outputs an input number of light emission pulses;
- a storing unit operable to store a number-of-light-emission-pulses conversion table for the input number of light emission pulses to set numbers of light emission pulses for respective RGB that creates white, so that a consistent color temperature is maintained;
- a number-of-light-emission-pulses converting unit operable to convert the input number of light emission pulses of the video signal to set numbers of light emission pulses for the respective RGB, based on the number-of-light-emission-pulses conversion table;
- and
- a divider that divides the set numbers of light emission pulses by the drive factor and outputs set gray scale values.
Dependencies are inferred from the claim text.