Liquid crystal display (LCD) device and image signal processing method
A technology for liquid crystal display device and image signal processing, applied in the field of liquid crystal display device and image signal processing, can solve the problems of low backlight brightness, low backlight brightness of monochrome images, low power consumption saving, etc., so as to avoid excessive backlight brightness. Low, good display effect
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[0032] Example 1
[0033] Such as figure 1 with figure 2 As shown, this embodiment provides a liquid crystal display device, including a decoding module 90, a dynamic backlight control module 100, a timing control module (timing controller, also known as a T-CON board) 110, a liquid crystal drive module 120, a liquid crystal panel 130, and a backlight The connection relationship and functions of the driving module 140, and the LED backlight module 150, the decoding module 90, the timing control module 110, the liquid crystal driving module 120, the backlight driving module 140, the liquid crystal panel 130, and the LED backlight module 150 belong to the prior art, such as figure 1 As shown, I will not repeat them here. The following focuses on the dynamic backlight control module 100.
[0034] Such as figure 2 As shown, the dynamic backlight control module 100 is connected to the decoding module 90. Of course, in order to reduce costs, the dynamic backlight control module 100 c...
Example Embodiment
[0036] Example 2
[0037] On the basis of the above example, this embodiment provides a liquid crystal display device, such as image 3 As shown, the dynamic backlight control module 100 includes an image signal receiving unit 101, a search unit 102, a statistics unit 103, a calculation unit 104, and a backlight control unit 106 connected in sequence.
[0038] Wherein, the image signal receiving unit 101 is connected to the searching unit 102, and is configured to receive R, G, and B grayscale signals in one frame of video signal, and send them to the searching unit 102. The search unit 102 is respectively connected to the image signal receiving unit 101 and the statistics unit 103, and converts the R, G, B grayscale signals into signals R', G', B'after γ correction, and converts the signals R', G', B'is sent to the statistics unit 103.
[0039] The statistical unit 103 is respectively connected with the search unit 102 and the calculation unit 104, and is used to calculate the aver...
Example Embodiment
[0047] Example 3
[0048] This embodiment provides an image signal processing method, which is applied to any of the above-mentioned liquid crystal display devices, and includes the following steps.
[0049] A1. Receive image signals R, G, and B; for example, step A1 further includes the following step A11: buffering the image signal.
[0050] A2. Perform γ correction on the image signals R, G, and B respectively, and convert them into signals R’, G’, and B’;
[0051] A3. Calculate the average and standard deviation of R', G', and B'separately; for example, calculate the average and standard deviation of R', G', and B'by counting the histograms of R', G', and B'respectively Standard deviation.
[0052] A4. Calculate the backlight adjustment value T according to each average value and each standard deviation.
[0053] For example, step A4 specifically performs the following steps:
[0054] A41. Calculate the maximum value X of the linear combination of the average value and standard devia...
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