Display device and method
First Claim
1. An image display device, comprising:
- a backlight module having a plurality of backlight regions, each of the backlight regions comprising an adjustable luminance unit, each of the luminance units having a basis luminance value;
a separating unit for separating an input image signal into a plurality of image region signals, each of the image region signals corresponding to one of the backlight regions;
a signal-processing unit for receiving the image region signals and transforming the image region signals into a plurality of output image signals, respectively; and
a modulation unit for adjusting the basis luminance values to a plurality of output luminance values, respectively, according to the image region signals, respectively;
wherein each of the basis luminance values and the corresponding image region signal cooperatively define a chromaticity and brightness, and the corresponding output luminance value and the corresponding output image signal cooperatively define substantially the same chromaticity and brightness.
3 Assignments
0 Petitions
Accused Products
Abstract
A region-based image display device includes a backlight module, a separating unit, a signal-processing unit, and a modulation unit. The backlight module includes several backlight regions. Each backlight region includes an adjustable luminance unit. Each luminance unit has a basis luminance value. The separating unit separates an input image signal into several image region signals corresponding to the backlight regions. The signal-processing unit transforms the image region signals into several output image signals. The modulation unit adjusts the basis luminance values to output luminance values according to the image region signals. Each basis luminance value and the corresponding image region signal on the one hand, and the corresponding output luminance value and output image signal, on the other hand, cooperatively define substantially the same chromaticity and brightness.
-
Citations
20 Claims
-
1. An image display device, comprising:
-
a backlight module having a plurality of backlight regions, each of the backlight regions comprising an adjustable luminance unit, each of the luminance units having a basis luminance value;
a separating unit for separating an input image signal into a plurality of image region signals, each of the image region signals corresponding to one of the backlight regions;
a signal-processing unit for receiving the image region signals and transforming the image region signals into a plurality of output image signals, respectively; and
a modulation unit for adjusting the basis luminance values to a plurality of output luminance values, respectively, according to the image region signals, respectively;
wherein each of the basis luminance values and the corresponding image region signal cooperatively define a chromaticity and brightness, and the corresponding output luminance value and the corresponding output image signal cooperatively define substantially the same chromaticity and brightness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An image displaying method for use in a region-based display device, the method comprising:
-
providing a backlight module in the display device, wherein the backlight module has a plurality of backlight regions, each of the backlight regions comprising an adjustable luminance unit, each of the luminance units having a basis luminance value;
separating an input region signal into a plurality of image region signals, each of the image region signals corresponding to one of the backlight regions, wherein each of the basis luminance values and the corresponding image region signal cooperatively define a chromaticity and brightness;
transforming the image region signals into a plurality of output image signals, respectively; and
according to the image region signals, adjusting the basis luminance values to a plurality of output luminance values, respectively, wherein each of the output luminance values and the corresponding output image signal cooperatively define substantially the same chromaticity and brightness as the corresponding basis luminance value and image region signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification