Liquid crystal display device and video signal processing method
AssigneesPanasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.
InventorToshikazu Koudo
Life of this patent
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Abstract
A liquid crystal display device that displays an input video signal, the liquid crystal display device comprising: a first liquid crystal display panel and a second liquid crystal display panel disposed to be laminated; a gamma corrector that generates a corrected video signal by performing gamma correction decided depending on a first control signal input from an outside with respect to the video signal; a first video signal generator that generates a first video signal for the first liquid crystal display panel using the corrected video signal; and a second video signal generator that generates a second video signal for the second liquid crystal display panel using the first video signal.
Claims8
A liquid crystal display device that displays an input video signal, the liquid crystal display device comprising:
- a first liquid crystal display panel and a second liquid crystal display panel disposed to be laminated;
- a gamma corrector that generates a corrected video signal by performing gamma correction decided depending on a first control signal input from an outside source with respect to the video signal;
- a first video signal generator that generates a first video signal for the first liquid crystal display panel using the corrected video signal;
- and
- a second video signal generator that generates a second video signal for the second liquid crystal display panel using the first video signal, wherein
- the gamma corrector performs the gamma correction using at least two types of gamma characteristics, and
- the two types of the gamma characteristics are a gamma characteristic for emphasizing contrast of a video displayed on the liquid crystal display device and a gamma characteristic for stereoscopically displaying the video displayed on the liquid crystal display device.
A liquid crystal display device that displays an input video signal, the liquid crystal display device comprising:
- a first liquid crystal display panel and a second liquid crystal display panel disposed to be laminated;
- a gamma corrector that generates a corrected video signal by performing gamma correction decided depending on a first control signal input from an outside source with respect to the video signal;
- a first video signal generator that:
- generates a first video signal for the first liquid crystal display panel using the corrected video signal;
- performs a stereoscopic vision suppression processing of suppressing stereoscopic vision due to parallax on the corrected video signal with strength depending on a second control signal input from the outside using at least two types of filtering processing;
- and
- a second video signal generator that generates a second video signal for the second liquid crystal display panel using the first video signal.
A liquid crystal display device that displays an input video signal, the liquid crystal display device comprising:
- a first liquid crystal display panel and a second liquid crystal display panel disposed to be laminated;
- a gamma corrector that generates a corrected video signal by performing gamma correction decided depending on a first control signal input from an outside source with respect to the video signal;
- a first video signal generator that generates a first video signal for the first liquid crystal display panel using the corrected video signal;
- and
- a second video signal generator that generates a second video signal for the second liquid crystal display panel using the first video signal, wherein
- the video signal includes gradation values of three color components,
- the liquid crystal display device further comprises a maximum value processor that extracts a maximum value from the gradation values of the three color components included in the video signal, and
- the gamma corrector performs the gamma correction on the maximum value extracted by the maximum value processor.
Dependencies are inferred from the claim text.