TWI419144B - Display brightness control method and display device thereof - Google Patents
Display brightness control method and display device thereof Download PDFInfo
- Publication number
- TWI419144B TWI419144B TW98134188A TW98134188A TWI419144B TW I419144 B TWI419144 B TW I419144B TW 98134188 A TW98134188 A TW 98134188A TW 98134188 A TW98134188 A TW 98134188A TW I419144 B TWI419144 B TW I419144B
- Authority
- TW
- Taiwan
- Prior art keywords
- brightness
- low
- control method
- level
- ratio
- Prior art date
Links
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Description
本發明係有關於一種顯示亮度控制方法及其顯示裝置，特別的是透過判斷影像資料中所佔低亮度像素比例之比率與最亮的等級，來控制顯示器之背光亮度。The invention relates to a display brightness control method and a display device thereof, in particular to controlling the backlight brightness of a display by determining the ratio of the low brightness pixel ratio and the brightest level in the image data.
習知技術中，使用者常常藉由設置在顯示裝置內的OSD軟體進行亮度或對比等參數值的調整，使得使用者可以在適合的情況下，觀察靜態文字/照片或是影像資料，然而上述的動作，需要透過使用者自行手動調整。In the prior art, the user often adjusts the brightness or contrast parameter values by using the OSD software installed in the display device, so that the user can observe static text/photo or image data when appropriate. The action needs to be manually adjusted by the user.
一般而言，不同的靜態文字/照片或是影像資料就會對應不同的參數值，然而，實際上使用者不可能在轉換每張(幅)時，手動進行調整所對應適合的參數。特別是在影像資料的部分，故須要有一種可以自動偵測影像狀態，並且對應產生適合參數值的方法。In general, different static text/photo or image data will correspond to different parameter values. However, in reality, it is impossible for the user to manually adjust the corresponding parameters when converting each frame. Especially in the part of the image data, it is necessary to have a method that can automatically detect the image state and correspondingly generate a suitable parameter value.
有鑑於上述習知技藝之問題，本發明之目的係提供一種顯示亮度控制方法及其顯示裝置，可以有效地動態調整背光亮度，使得影像資料之顏色層次、對比和影像細部具有更佳的顯示。In view of the above problems, the object of the present invention is to provide a display brightness control method and a display device thereof, which can effectively adjust the brightness of the backlight dynamically, so that the color gradation, contrast and image details of the image data have better display.
根據本發明之目的，提出一種顯示亮度控制方法，其包含下列步驟。定義顯示裝置之背光模組之複數個發光等級，使用顯示裝置之處理模組分析影像資料之低亮度像素比例，此低亮度像素比例為亮度值低於預設低亮度值之像素數目與影像資料之全部像素數目之比例，接著使用顯示裝置之處理模組分析影像資料之最高亮度值及最低亮度值。最後，使用顯示裝置之處理模組根據低亮度像素比例、最高亮度值及最低亮度值，從複數個發光等級選擇其一，並控制背光模組以所選之發光等級來發光。In accordance with the purpose of the present invention, a display brightness control method is provided that includes the following steps. Defining a plurality of illumination levels of the backlight module of the display device, and analyzing a low-intensity pixel ratio of the image data by using a processing module of the display device, wherein the ratio of the low-brightness pixels is a pixel number and image data whose brightness value is lower than a preset low brightness value The ratio of the total number of pixels is then analyzed using the processing module of the display device to analyze the highest brightness value and the lowest brightness value of the image data. Finally, the processing module using the display device selects one of the plurality of illumination levels according to the low brightness pixel ratio, the highest brightness value, and the lowest brightness value, and controls the backlight module to emit light at the selected illumination level.
根據本發明之目的，提出一種顯示裝置，其包含資料輸出入埠、顯示面板、背光模組及處理模組。資料輸出入埠接收影像資料，而背光模組用以發光至顯示面板。處理模組用以處理影像資料，並控制顯示面板顯示處理過之影像資料，且處理模組分析影像資料之低亮度像素比例，以及分析影像資料之最高亮度值及最低亮度值。使用顯示裝置之處理模組根據低亮度像素比例、最高亮度值及最低亮度值，從複數個發光等級選擇其一，並控制背光模組以所選之發光等級來發光。其中低亮度像素比例為亮度值低於預設低亮度值之像素數目與影像資料之全部像素數目之比例。According to the purpose of the present invention, a display device is provided, which comprises a data input and output port, a display panel, a backlight module and a processing module. The data output is received and received, and the backlight module is used to emit light to the display panel. The processing module is configured to process the image data, and control the display panel to display the processed image data, and the processing module analyzes the low-brightness pixel ratio of the image data, and analyzes the highest brightness value and the lowest brightness value of the image data. The processing module using the display device selects one of the plurality of illumination levels according to the low brightness pixel ratio, the highest brightness value, and the lowest brightness value, and controls the backlight module to emit light at the selected illumination level. The low-brightness pixel ratio is a ratio of the number of pixels whose luminance value is lower than the preset low luminance value to the total number of pixels of the image data.
承上所述，依本發明之顯示亮度控制方法及其顯示裝置，其可具有一或多個下述優點：As described above, the display brightness control method and display device thereof according to the present invention may have one or more of the following advantages:
(1)此顯示亮度控制方法在適合的對比管理(ACM：Acer Adaptive Contrast Management)中再定義至少四種的區間，用以更加提升影像之顏色層次和影像細部。(1) The display brightness control method further defines at least four intervals in the ACM: Acer Adaptive Contrast Management to further enhance the color gradation and image detail of the image.
(2)此顯示亮度控制方法係更在最小亮度下再包含超小亮度，特別可適用於高於10000:1對比環境下。(2) This display brightness control method further includes ultra-small brightness at minimum brightness, especially suitable for comparison environment higher than 10000:1.
(3)本發明在0-255等256個灰階值中，選用32個灰階等級做為判斷的條件，其該範圍係為可容易被人眼睛所輕易辨識的亮度，且可減少操作該亮度之運算量。(3) In the present invention, among the 256 gray scale values such as 0-255, 32 gray scale levels are selected as the judgment condition, and the range is the brightness which can be easily recognized by the human eye, and the operation can be reduced. The amount of calculation of the brightness.
請參閱第1圖及第2圖，其分別為本發明之顯示亮度控制方法之第一實施例之流程圖及示意圖。圖中，顯示亮度控制方法包含下列步驟。在步驟S101，定義顯示裝置之背光模組之複數個發光等級。接著在步驟S102分析影像資料之低亮度像素比例。低亮度像素比例為亮度值低於一預設低亮度值之像素數目與影像資料之全部像素數目之比例。請同時參閱第2圖，圖中係以灰階度32作為預設低亮度值，並統計影像資料之所有像素的灰階值，其低於32的比例有多少。在第2圖中低亮度像素比例分成高比例、中比例或低比例等三個區段來考量，第I區，灰階值低於32的像素佔整張影像的比例超過90%，其為高比例表示此影像為一偏暗亮度；在第II區，灰階值低於32的像素佔整張影像的比例介於80%與90%之間，其為中比例表示此影像為一般亮度影像；在第III區，灰階值低於32的像素佔整張影像的比例介低於80%，其為低比例表示此影像為一偏亮影像。在步驟S103使用顯示裝置之處理模組分析影像資料之最高亮度值及最低亮度值。最後，使用顯示裝置之處理模組根據低亮度像素比例、最高亮度值及最低亮度值，從複數個發光等級選擇其一，並控制背光模組以所選之發光等級來發光。在此實施例中，係將亮度值以0-255分為256個灰階值來表示，然本發明之灰階數量並不以此為限。Please refer to FIG. 1 and FIG. 2 , which are respectively a flowchart and a schematic diagram of a first embodiment of a display brightness control method according to the present invention. In the figure, the display brightness control method includes the following steps. In step S101, a plurality of illumination levels of the backlight module of the display device are defined. Next, in step S102, the low-intensity pixel ratio of the image data is analyzed. The low-brightness pixel ratio is the ratio of the number of pixels whose luminance value is lower than a predetermined low luminance value to the total number of pixels of the image data. Please also refer to Figure 2, which uses grayscale 32 as the preset low brightness value, and counts the grayscale values of all the pixels of the image data, which is lower than the ratio of 32. In Figure 2, the low-brightness pixel ratio is divided into three sections: high ratio, medium ratio, or low ratio. In the first region, the pixel with the grayscale value lower than 32 accounts for more than 90% of the entire image. A high ratio indicates that the image is a dim brightness; in the second region, a pixel with a grayscale value lower than 32 occupies between 80% and 90% of the entire image, and the medium ratio indicates that the image is a general brightness. Image; in the third region, the pixel with the grayscale value lower than 32 occupies less than 80% of the whole image, and the low ratio indicates that the image is a bright image. In step S103, the processing module of the display device is used to analyze the highest brightness value and the lowest brightness value of the image data. Finally, the processing module using the display device selects one of the plurality of illumination levels according to the low brightness pixel ratio, the highest brightness value, and the lowest brightness value, and controls the backlight module to emit light at the selected illumination level. In this embodiment, the luminance value is represented by 256 gray scale values from 0 to 255, but the number of gray scales of the present invention is not limited thereto.
其中，當影像資料係為接近之全暗亮度時，執行最小亮度之亮度，亦即控制背光模組於最低發光等級；當影像資料係為標準亮度時，執行典型高亮度之亮度，亦即控制背光模組於較高發光等級；當影像資料係為標準暗度時，執行典型低亮度之亮度，亦即控制背光模組於較低發光等級；當影像資料係為接近之全亮亮度時，執行最大亮度之亮度，亦即控制背光模組於最高發光等級。實施上，較高發光等級之亮度值較佳為最高發光等級之亮度值之70%~90%，而較低發光等級之亮度值較佳為最高發光等級之亮度值之20%~30%。Wherein, when the image data is close to the full dark brightness, the brightness of the minimum brightness is performed, that is, the backlight module is controlled to the lowest light level; when the image data is the standard brightness, the brightness of the typical high brightness is performed, that is, the control is performed. The backlight module is at a higher illumination level; when the image data is a standard darkness, the brightness of the typical low brightness is performed, that is, the backlight module is controlled at a lower illumination level; when the image data is close to the full brightness level, The brightness of the maximum brightness is performed, that is, the backlight module is controlled to the highest illumination level. In practice, the luminance value of the higher illumination level is preferably 70% to 90% of the luminance value of the highest illumination level, and the luminance value of the lower illumination level is preferably 20% to 30% of the luminance value of the highest illumination level.
執行何種狀態的條件分別以低亮度像素比例及畫面中最亮的等級做為判斷的依據。其分述如下：影像資料之低亮度像素比例係大於等於0.9及小於等於1之間，且畫面中最亮的等級小於等於4時，選擇較低發光等級。The conditions for performing the state are based on the low-brightness pixel ratio and the brightest level in the picture. The description is as follows: when the low-brightness pixel ratio of the image data is greater than or equal to 0.9 and less than or equal to 1, and the brightest level in the picture is less than or equal to 4, the lower illumination level is selected.
影像資料之低亮度像素比例係介於0.9~1之間，且畫面中最亮的等級灰階值大於220時，選擇較高發光等級。The low-brightness pixel ratio of the image data is between 0.9 and 1, and the brightest level of the grayscale value in the picture is greater than 220, and the higher illumination level is selected.
影像資料之低亮度像素比例係介於0.9~1之間，且畫面中最亮的灰階值介於5~220之間時，選擇較低發光等級。The low-brightness pixel ratio of the image data is between 0.9 and 1, and when the brightest grayscale value in the picture is between 5 and 220, the lower illumination level is selected.
影像資料之低亮度像素比例係介於0.8~0.9之間，且畫面中最亮的灰階值大於220之間時，選擇較高發光等級。The low-brightness pixel ratio of the image data is between 0.8 and 0.9, and when the brightest grayscale value in the picture is greater than 220, the higher illumination level is selected.
影像資料之低亮度像素比例係介於0.8~0.9之間，且畫面中最亮的灰階值小於220時，選擇較低發光等級。The low-brightness pixel ratio of the image data is between 0.8 and 0.9, and when the brightest grayscale value in the picture is less than 220, the lower illumination level is selected.
影像資料之低亮度像素比例係小於等於0.8及大於等於0時，且畫面中最暗的灰階值大於252之間時，選擇最高發光等級。When the low-brightness pixel ratio of the image data is less than or equal to 0.8 and greater than or equal to 0, and the darkest grayscale value in the picture is greater than 252, the highest illumination level is selected.
影像資料之低亮度像素比例係小於等於0.8及大於等於0時，且畫面中最暗的灰階值小於252之間時，選擇較高發光等級。When the low-intensity pixel ratio of the image data is less than or equal to 0.8 and greater than or equal to 0, and the darkest grayscale value in the picture is less than 252, a higher illumination level is selected.
參考第2圖之示意圖，橫軸表示其低亮度像素比例的比率，縱軸表示其所對應的亮度。舉例而言，在區域I，判斷的條件係表示當低亮度像素比例介於90%~100%之間時，若畫面中最亮的等級≦4，執行最小亮度；若畫面中最亮的等級＞220，執行典型高亮度；若4<畫面中最亮的等級≦220，執行典型低亮度。在區域II，判斷的條件係表示當低亮度像素比例介於80%~90%之間時，若畫面中最亮的等級＞220，執行典型高以及亮度畫面中最亮的等級＜220，執行典型低亮度。在區域III，判斷的條件係表示當低亮度像素比例介於0%~80%之間時，若畫面中最暗的等級＞252，執行最大亮度以及畫面中最暗的等級＜252，執行典型高亮度。此外，最大亮度可為面板出廠時的預設值，而最小亮度可透過利用脈衝寬度調變(PWM)或是軟體的方式進行調整。較佳地，典型高亮度係為最大亮度之90%，以及典型低亮度係為最大亮度之25%。然而，在實際上，典型高亮度可容許接受在最大亮度之80%~90%，典型低亮度係可容許接受在最大亮度之20~30%。Referring to the schematic diagram of Fig. 2, the horizontal axis represents the ratio of the ratio of the low luminance pixels, and the vertical axis represents the luminance corresponding thereto. For example, in the area I, the condition judged is that when the low-brightness pixel ratio is between 90% and 100%, if the brightest level ≦4 in the picture, the minimum brightness is performed; if the brightest level in the picture >220, performs a typical high brightness; if 4 < the brightest level 画面 220 in the picture, a typical low brightness is performed. In area II, the condition judged is that when the low-brightness pixel ratio is between 80% and 90%, if the brightest level in the picture is >220, the highest level in the typical high and brightness pictures is <220, and execution is performed. Typical low brightness. In the area III, the condition judged is that when the low-brightness pixel ratio is between 0% and 80%, if the darkest level in the picture is > 252, the maximum brightness is performed and the darkest level in the picture is <252, and the typical execution is performed. high brightness. In addition, the maximum brightness can be preset when the panel is shipped from the factory, and the minimum brightness can be adjusted by means of pulse width modulation (PWM) or software. Preferably, the typical high brightness is 90% of the maximum brightness, and the typical low brightness is 25% of the maximum brightness. However, in practice, typical high brightness can be tolerated at 80% to 90% of the maximum brightness, and typical low brightness can be tolerated at 20 to 30% of the maximum brightness.
值得注意的是，影像資料有可能隨時在變化，故需要在各種定義的亮度之間變化，其轉換的時間，除了最大亮度轉換至最小亮度大致需要兩倍的一轉換時間及最小亮度轉換至最大亮度大致需要兩倍的一轉換時間外，其餘各亮度之間的轉換僅需一倍的一轉換時間，該轉換時間大致上約8秒鐘。其分別為，最大亮度轉換至典型高亮度與典型低亮度大致需要一轉換時間；典型高亮度轉換至最大亮度、典型低亮度及最小亮度大致需要一轉換時間；典型低亮度轉換至最大亮度、典型高亮度及該最小亮度大致需要一轉換時間；最小亮度轉換至典型高亮度與典型低亮度大致需要一轉換時間。It is worth noting that the image data may change at any time, so it needs to change between various defined brightnesses. The conversion time, except for the maximum brightness conversion to the minimum brightness, requires approximately twice the conversion time and the minimum brightness to be converted to the maximum. The brightness requires approximately twice the conversion time, and the conversion between the remaining brightnesses requires only one conversion time, which is approximately 8 seconds. The conversion of maximum brightness to typical high brightness and typical low brightness generally requires a conversion time; typical high brightness conversion to maximum brightness, typical low brightness and minimum brightness generally requires a conversion time; typical low brightness conversion to maximum brightness, typical High brightness and the minimum brightness generally require a conversion time; a minimum brightness conversion to typical high brightness and typical low brightness generally requires a conversion time.
請參閱第3圖，其係為本發明之顯示亮度控制方法之第二實施例流程圖。於本實施例中，係為顯示亮度控制方法，其包含下列步驟：在步驟S202係影像資料之高對比調整啟動；高對比調整(對比高於10000:1)啟動後，則接著步驟S204，進行狀態的偵測，判別狀態是否為最小亮度；若不是最小亮度，則返回狀態的偵測；反之，若為最小亮度則進入步驟S208，其係判斷最小亮度的狀態是否持續5分鐘，若未持續5分鐘，則繼續為最小亮度；反之，若持續5分鐘最小亮度，則進入步驟S210之超小亮度狀態；接著步驟S212，其係判斷超小亮度的狀態是否持續5分鐘，若未持續5分鐘，則繼續為超小亮度；反之，若持續5分鐘超小亮度，則進入步驟S214之最小亮度狀態。Please refer to FIG. 3, which is a flow chart of a second embodiment of the display brightness control method of the present invention. In this embodiment, it is a display brightness control method, which includes the following steps: in step S202, the high contrast adjustment of the image data is started; after the high contrast adjustment (comparison is higher than 10000:1) is started, then step S204 is performed. The state is detected to determine whether the state is the minimum brightness; if it is not the minimum brightness, the state is detected; otherwise, if it is the minimum brightness, the process proceeds to step S208, which determines whether the state of the minimum brightness lasts for 5 minutes, if not 5 minutes, then continue to be the minimum brightness; conversely, if the minimum brightness is continued for 5 minutes, the process proceeds to the ultra-small brightness state of step S210; then, in step S212, it is determined whether the state of the ultra-small brightness lasts for 5 minutes, if not for 5 minutes. Then, it continues to be ultra-small brightness; on the other hand, if it is ultra-small brightness for 5 minutes, it proceeds to the minimum brightness state of step S214.
請參閱第4圖，其係為本發明之顯示亮度控制方法之第三實施例流程圖。於本實施例中，係為顯示亮度控制方法，其包含下列步驟：在步驟S302係啟動影像資料之高對比調整；接著步驟S304，係進行狀態的偵測，亦即偵測是否進入最小亮度、典型低亮度、典型高亮度、最大亮度或超小亮度；接著步驟S306，根據偵測狀態的結果，判斷是否進行狀態改，若要進行狀態改變，則進入步驟S308，進行8秒或者16秒的狀態間轉換，且轉換後，再返回到步驟S304；反之，則直接返回到步驟S304的狀態偵測；若使用者啟動亮度調整的設定，則中斷上述步驟，進入步驟S310，並且同時進入步驟S312，關閉影像資料之高對比調整；若使用者再次啟動影像資料之高對比調整，則再次進入步驟S302。Please refer to FIG. 4, which is a flow chart of a third embodiment of the display brightness control method of the present invention. In this embodiment, it is a display brightness control method, which includes the following steps: in step S302, the high contrast adjustment of the image data is started; then, in step S304, the state detection is performed, that is, whether the minimum brightness is detected, Typical low brightness, typical high brightness, maximum brightness or ultra-small brightness; then, in step S306, according to the result of the detection state, it is determined whether the state change is performed. If the state change is to be performed, the process proceeds to step S308 for 8 seconds or 16 seconds. After the state transitions, and after the conversion, the process returns to step S304; otherwise, the process returns to the state detection of step S304 directly; if the user initiates the setting of the brightness adjustment, the above steps are interrupted, the process proceeds to step S310, and simultaneously proceeds to step S312. , the high contrast adjustment of the image data is turned off; if the user starts the high contrast adjustment of the image data again, the process proceeds to step S302 again.
此外，於另一實施例中，係利用上述方法，實施在不同影像資料圖樣的測試結果：若影像資料係為全黑的圖樣(全部像素灰階為0)，則高對比調整進入最小亮度。In addition, in another embodiment, the test results of different image data patterns are implemented by using the above method: if the image data is a black pattern (all pixels have a gray level of 0), the high contrast adjustment enters the minimum brightness.
若影像資料係為全白的圖樣(全部像素灰階為255)，則高對比調整進入最大亮度。If the image data is an all white pattern (all pixels have a gray level of 255), the high contrast adjustment enters the maximum brightness.
若影像資料係為低亮度像素比例介於0.9與1之間時，且當最大像素灰階小於4時，則高對比調整進入最小亮度。If the image data is a low-brightness pixel ratio between 0.9 and 1, and when the maximum pixel gray level is less than 4, the high contrast adjustment enters the minimum brightness.
若影像資料係為低亮度像素比例介於0.9與1之間時，且當最大像素灰階等於120時，則高對比調整進入典型低亮度。If the image data is a low-brightness pixel ratio between 0.9 and 1, and when the maximum pixel gray level is equal to 120, the high contrast adjustment enters a typical low brightness.
若影像資料係為低亮度像素比例介於0.9與1之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is a low-brightness pixel ratio between 0.9 and 1, and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.8與0.9(不包含0.9)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is in a low-brightness pixel ratio between 0.8 and 0.9 (excluding 0.9), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.8與0.9(不包含0.9)之間時，且當最大像素灰階小於220時，則高對比調整進入典型低亮度。If the image data is a low-brightness pixel ratio between 0.8 and 0.9 (excluding 0.9), and when the maximum pixel grayscale is less than 220, the high contrast adjustment enters a typical low brightness.
若影像資料係為低亮度像素比例介於0.7與0.8(不包含0.9)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is in a low-brightness pixel ratio between 0.7 and 0.8 (excluding 0.9), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.6與0.7(不包含0.7)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is in a low-brightness pixel ratio between 0.6 and 0.7 (excluding 0.7), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.5與0.6(不包含0.6)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is in a low-brightness pixel ratio between 0.5 and 0.6 (excluding 0.6), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.4與0.5(不包含0.5)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is a low-brightness pixel ratio between 0.4 and 0.5 (excluding 0.5), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.3與0.4(不包含0.4)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is in a low-brightness pixel ratio between 0.3 and 0.4 (excluding 0.4), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.2與0.3(不包含0.3)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is in a low-brightness pixel ratio between 0.2 and 0.3 (excluding 0.3), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0.1與0.2(不包含0.2)之間時，且當最大像素灰階大於220時，則高對比調整進入典型高亮度。If the image data is in a low-brightness pixel ratio between 0.1 and 0.2 (excluding 0.2), and when the maximum pixel grayscale is greater than 220, the high contrast adjustment enters a typical high brightness.
若影像資料係為低亮度像素比例介於0與0.1(不包含0.1)之間時，且當最大像素灰階大於252時，則高對比調整進入最大亮度。If the image data is in a low-brightness pixel ratio between 0 and 0.1 (excluding 0.1), and when the maximum pixel grayscale is greater than 252, the high contrast adjustment enters the maximum brightness.
若當影像資料係為帶有一些白色文字的黑背景時，則高對比調整進入典型高亮度。If the image data is a black background with some white text, the high contrast adjustment enters a typical high brightness.
若當影像資料係為帶有較多白色文字的黑背景時，則高對比調整進入典型高亮度。If the image data is a black background with more white text, the high contrast adjustment enters a typical high brightness.
若當影像資料係為帶有很多白色文字的黑背景時，則高對比調整進入典型高亮度。If the image data is a black background with a lot of white text, the high contrast adjustment enters a typical high brightness.
若當影像資料係為帶有一些黑色文字的白背景時，則高對比調整進入典型高亮度。If the image data is a white background with some black text, the high contrast adjustment enters a typical high brightness.
再者，再進行更進一步的測試；測試條件為系統進入最小亮度之5分鐘後，則高對比調整進入超小亮度。Furthermore, further testing is carried out; the test condition is that after the system enters the minimum brightness for 5 minutes, the high contrast adjustment enters the ultra-small brightness.
測試條件為系統進入最小亮度之10分鐘後，則高對比調整進入最小亮度。The test condition is that after the system enters the minimum brightness for 10 minutes, the high contrast adjustment enters the minimum brightness.
以上所述僅為舉例性，而非為限制性者。控制發光單元或是調整顯示參數的方式可單獨使用或是結合使用，如此任何未脫離本發明之精神與範疇，而對其進行之等效修改或變更，均應包含於後附之申請專利範圍中。The above is intended to be illustrative only and not limiting. The means for controlling the illumination unit or adjusting the display parameters may be used alone or in combination, and any equivalent modifications or alterations to the scope of the invention shall be included in the scope of the appended claims. in.
S101~S104．．．步驟S101~S104. . . step
S202~S214．．．步驟S202~S214. . . step
以及as well as
S302~S312．．．步驟S302~S312. . . step
第1圖係為本發明之顯示亮度控制方法之第一實施例之流程圖；1 is a flow chart of a first embodiment of a display brightness control method of the present invention;
第2圖係為本發明之顯示亮度控制方法之第一實施例之示意圖；2 is a schematic view showing a first embodiment of a display brightness control method of the present invention;
第3圖係為本發明之顯示亮度控制方法之第二實施例流程圖；以及Figure 3 is a flow chart showing a second embodiment of the display brightness control method of the present invention;
第4圖係係為本發明之顯示亮度控制方法之第三實施例流程圖。Figure 4 is a flow chart showing a third embodiment of the display brightness control method of the present invention.
S101~S104．．．步驟S101~S104. . . step
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW98134188A TWI419144B (en) | 2009-10-08 | 2009-10-08 | Display brightness control method and display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW98134188A TWI419144B (en) | 2009-10-08 | 2009-10-08 | Display brightness control method and display device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201113867A TW201113867A (en) | 2011-04-16 |
| TWI419144B true TWI419144B (en) | 2013-12-11 |
Family
ID=44909830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW98134188A TWI419144B (en) | 2009-10-08 | 2009-10-08 | Display brightness control method and display device thereof |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI419144B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996017269A2 (en) * | 1994-11-28 | 1996-06-06 | Smartlight Limited | Display device |
| US20040240777A1 (en) * | 2001-08-06 | 2004-12-02 | Woodgate Graham John | Optical switching apparatus |
| US20060055838A1 (en) * | 2004-09-13 | 2006-03-16 | Eastman Kodak Company | Light recycling film and display |
| US20060055844A1 (en) * | 2004-09-13 | 2006-03-16 | Eastman Kodak Company | Dark state light recycling film and display |
| TW200723208A (en) * | 2005-12-12 | 2007-06-16 | Himax Tech Inc | Display system with high motion picture quality and luminance control thereof |
| TW200813975A (en) * | 2006-09-13 | 2008-03-16 | Mstar Semiconductor Inc | Method and apparatus for displaying image on a display unit and controlling backlight module which irradiates the display unit |
| TW200820212A (en) * | 2006-10-17 | 2008-05-01 | Au Optronics Corp | Block image brightness control method |
| US20080246897A1 (en) * | 2004-01-20 | 2008-10-09 | Jean-Etienne Gaudreau | Stereoscopic Display System |
| TW200917227A (en) * | 2007-10-12 | 2009-04-16 | Delta Electronics Inc | Liquid crystal display device and aparatus and method for controlling luminance of liquid crystal panel thereof |
| TW200923893A (en) * | 2007-11-26 | 2009-06-01 | Coretronic Corp | Liquid crystal display and method for dimming backlighting of liquid crystal display |
-
2009
- 2009-10-08 TW TW98134188A patent/TWI419144B/en active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996017269A2 (en) * | 1994-11-28 | 1996-06-06 | Smartlight Limited | Display device |
| US20040240777A1 (en) * | 2001-08-06 | 2004-12-02 | Woodgate Graham John | Optical switching apparatus |
| US20080246897A1 (en) * | 2004-01-20 | 2008-10-09 | Jean-Etienne Gaudreau | Stereoscopic Display System |
| US20060055838A1 (en) * | 2004-09-13 | 2006-03-16 | Eastman Kodak Company | Light recycling film and display |
| US20060055844A1 (en) * | 2004-09-13 | 2006-03-16 | Eastman Kodak Company | Dark state light recycling film and display |
| TW200723208A (en) * | 2005-12-12 | 2007-06-16 | Himax Tech Inc | Display system with high motion picture quality and luminance control thereof |
| TW200813975A (en) * | 2006-09-13 | 2008-03-16 | Mstar Semiconductor Inc | Method and apparatus for displaying image on a display unit and controlling backlight module which irradiates the display unit |
| TW200820212A (en) * | 2006-10-17 | 2008-05-01 | Au Optronics Corp | Block image brightness control method |
| TW200917227A (en) * | 2007-10-12 | 2009-04-16 | Delta Electronics Inc | Liquid crystal display device and aparatus and method for controlling luminance of liquid crystal panel thereof |
| TW200923893A (en) * | 2007-11-26 | 2009-06-01 | Coretronic Corp | Liquid crystal display and method for dimming backlighting of liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201113867A (en) | 2011-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4979776B2 (en) | Image display device and image display method | |
| US7631974B2 (en) | Image display method and image display device | |
| KR100855472B1 (en) | Apparatus and method for driving low-power | |
| RU2435231C2 (en) | Method and system for modulating backlighting with detection of change of view | |
| TWI439996B (en) | Method for adjusting a backlight of a display device and device thereof | |
| EP2353158B1 (en) | Improved power management for modulated backlights | |
| KR101608856B1 (en) | Method of dimming driving and display apparatus for performing the method | |
| JP5270730B2 (en) | Video display device | |
| JP5165788B1 (en) | Video display device | |
| JP5575900B2 (en) | Display control method, display control device, liquid crystal display device, display control program, and computer-readable recording medium | |
| CN101383132B (en) | Liquid crystal display method | |
| CN1961346A (en) | Display device comprising a light source | |
| CN101281730A (en) | Liquid crystal display method | |
| KR20070005637A (en) | Display device comprising an adjustable light source | |
| JP2010078982A (en) | Image display apparatus and its method | |
| US11361718B2 (en) | Image data processing apparatus and method for implementing local dimming | |
| KR20090040673A (en) | Method and apparatus for improving picture quality of lcd | |
| TWI390483B (en) | Apparatus and method for contrast control | |
| JP2008102287A (en) | Device for controlling light source and method of controlling light source | |
| CN101142610A (en) | Method and/or apparatus to improve the visual perception of an image displayed on a screen | |
| KR20110088050A (en) | Apparatus and mehtod for image qualtiy improving in image display device | |
| JP2013033088A (en) | Light-emitting device, display device, control device, control method and control program | |
| TWI419144B (en) | Display brightness control method and display device thereof | |
| CN102044233A (en) | Control method of display brightness and display device thereof | |
| KR20110052120A (en) | Driving method and device for plasma display panel |