Ubiquitously mountable image display system
US-2024103309-A1 · Mar 28, 2024 · US
Display device and display method
US9214112B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9214112-B2 |
| Application number | US-201013395842-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 29, 2010 |
| Priority date | Sep 29, 2009 |
| Publication date | Dec 15, 2015 |
| Grant date | Dec 15, 2015 |
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Abstract
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Disclosed is a display device capable of compensating unevenness in brightness caused by physical restrictions of a display device or degradation in image quality caused by a partial reduction in contrast occurring in the local dimming technology using human visual characteristics. A liquid crystal panel ( 101 ) modulates illuminating light in accordance with the transmittance, and displays images on a screen. A backlight ( 102 ) emits the illuminating light to the liquid crystal panel ( 101 ) such that amounts of the illuminating light differ for each light emitting area of the screen. A backlight control unit ( 106 ) controls emission brightness of the backlight ( 102 ) for each light emitting area. A local gradation converting unit ( 104 ) performs gradation conversion on an image signal, and acquires a brightness value for each pixel after the conversion. A backlight driving unit ( 107 ) controls the transmittance for each pixel on the basis of the acquired brightness values after the conversion. The local gradation converting unit sets conversion characteristics for pixels to be processed in the image signal such that the brightness values of the pixels to be processed are low as the lightness of the periphery of the pixels to be processed is high, and performs gradation conversion using the set conversion characteristics.
First claim
Opening claim text (preview).
The invention claimed is: 1. A display apparatus comprising: a light modulating section which modulates illumination light according to a light modulation coefficient and displays an image on a screen; a radiating section which radiates the illumination light on the light modulating section with an illumination light amount which varies per light emitting area of the screen; a control section that receives a video signal and which controls light emission brightness of the radi…
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Physics · mapped topic
- G09G3/3426Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US9214112B2 cover?
- Disclosed is a display device capable of compensating unevenness in brightness caused by physical restrictions of a display device or degradation in image quality caused by a partial reduction in contrast occurring in the local dimming technology using human visual characteristics. A liquid crystal panel ( 101 ) modulates illuminating light in accordance with the transmittance, and displays ima…
- Who is the assignee on this patent?
- Yamashita Haruo, Ito Takeshi, Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G09G3/3426. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 15 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).