M352697 八、新型說明： （9年711/'修正 ί 補充 【新型所屬之技術領域】 本創作係有關一種影像晝面之動態背光調變系統，特別是一種 液晶顯示器之影像畫面之動態背光調變系統。 【先前技術】 平面型顯示器（Flat Display)的硬體設備已趨近成熟穩定階段，如： 背光模組、面板或是驅動電路等，對於影像品質的影響程度已逐漸降低， 但增進晝面顯示品質仍為眾人努力之方向。以往最令使用者在意的品質部 分係在於平面顯示器的亮度（cd/m2)部分，目前提高亮度的方法有兩種， 一種是提高LCD面板的光通過率；另一種就是增加背景燈光的亮度。但 疋，較冗的産品不見仔就疋較好的產品。顯示器晝面過亮常常會令人眼睛 感覺不適，一方面容易引起視覺疲勞，同時也使純黑與純白的對比降低， 影響色階和灰階的表現。螢幕在全白以及全黑兩個狀況下所測得的亮度比 值，稱對比度（Contrast)。以往LCD背光源所使用的照明單元為冷陰極螢 光燈官（CCFL)’背光模組中的燈管對於所有的顯示晝面給予的光源亮度 係為一疋值’使用的對比加強技術都只屬於靜態加強技術，僅僅拉大訊號 與固定灰階之對比關係，或是透過液晶分子的排列方式使得光通量受到影 響而產生較暗色調。不過，各液晶分子啟閉的時間將造成鄰近周圍遭遇漏 光問題，漏光時將在螢幕顯示較暗的晝面時產生不暗、甚至灰目蒙的狀態， 所以漏光的問題仍是亟待解決的課題之一。目前LCD背光源所使用的照明 單元為LK)，採用LED光源的進階背光控制技術配合分段控制可以創造 一種鮮活生動的視覺感受，同時大大降低LCD TV機的功耗，降低程度可 高達80%。與當前市場上大螢幕LCD背光控制中主要使用的冷陰極螢光燈 CCFL相比，採用LED為LCD背光源的能效高得多。實際上，LED的光 學效率目前與CCFL相當’其高能效並非是其光學效率(流明每瓦)的自然 結果，而是由於其明暗程度可以更靈活咼效地控制，以滿足圖像亮度的要 M352697 求。採用-組可尋址的LED陣列進行二維背光亮度控制賴造的視覺效果 更加生動’對比度更強，色域更廣，色彩飽和度也更好。 過去幾年’ CCFL t光控制中採用了多種亮度控制技術。例如，有時 為了滿足圖像亮度的要求，整個背光都被調暗，這制献—種叫做〇維 調光（dimming)的技術。如果調光是沿著—條單軸進行的(例如透過控制一 組CCFL螢光燈的亮度）’就叫做一維調光。隨著最近LED成本的降低和 性能的提升LED進行背紐儀可行性越來越高，因而該技術可能 成為-種新獅更高效的背絲度控制技術。而LED能_鬆佈置成為一 個二維陣顺實現每辦解元的單獨控繼—事實謂κ水準和垂 直方向)調光成為可能’這在過去獅CCFL時是不可能實現的^二維調光 能在顯示圖片的亮區域背後局部地產生更多的光，而在暗區域產生較少的 光。如果不用白色LED ,而用rGB三色LED，那麼二維LED背光控制的 優=更大。透過控制RGB中紅、綠、藍LED的亮度，可實現遠遠寬於傳 統背光^CD面板的色域。因此，RGB LED的#光能產生更亮、更深 '飽 和度更高的色彩。於是，-般可以透過智腿和度㈣將視勤容邮B) 的色彩㈣映_ LED背光的色毅間。此類映射算法不應改_像中的 白色、膚色和柔和色，但卻能將飽和色擴制只有LED才能實現的鮮亮程 度將RGB LED按二維陣列的模式排放並在單色基礎上對其進行單獨控 制(即一維彩色明暗控制)不但能降低功耗，豸能改善色域和對比度。首先， ^種方法省去了彩色瀘色片，而濾色片是光能的主要吸收者，它會損失光 月b 以上+掉渡色片以後，不但能免除了遽色片7〇%的光能損失而 且還可以㊉省濾'色片的成本。濾、色片的成本在總成本中占，是相當可 觀的=部分。實際上，省去親片以後，還可以提升成品率，減少生^時 間’运些無賴改進都十分重要。其+ t統的娜成本是基於ccfl的 數據，如用LED作為背光源，它所占的成本將大大超過這個比例，大 約，占到50%的成本。制場順序製以後，拿掉了濾、色片就相當於發光效 率提升了 7G%，造是非常可觀的。這意味著LED的數量可以減少7〇%， LED的成本就可以減少萬。而且LED數量減少7G%以後，其發熱量可 M3.52697 (9|1L07)修正 耗電也可以減少7〇%。不僅如此，採用場順v以後， ;、巴母個像素分為三個子像素，薄膜晶體管TFT也可以減少三倍， =於像素面積加大了二倍；或者說，如果储像素面積不變，在相 同的螢幕尺寸下’可以將分辨提升三倍。 有胁上述二維LED f光控_優勢，對於影像顯示㈣如何加強 、f;。彼此間的刀布關係、以及同時調整光源在適當狀態下，使晝質更漆* 美，一直是努力發展的方向。 、 【新型内容】 9 _本&作係對於輸人影像tfL號，動態調整及加強訊號彼此間對比關係， 同時也動餘觸示时光亮度，藉關時改魏絲示ϋ之亮度對比太 低與黑畫面亮度太亮的缺點。 曰本創作係在於藉由動態調整及加強訊號彼此間的對比關係來達成提 汁、或降低亮度位準，使該亮度位準偏移至正側或是負側，並使輸入影像 依據新的機率分布_以及背絲圍之調整制液晶顯示器髓畫質的提 昇。 本創作係在於將訊號強度（訊號平均灰階值）分布機率重新分配，以 產生新的雜方程式（transferfUnetiGn)，藉由將縣輸人訊酿轉換方程 .捕麟產鋼整過之輸丨减，使該液晶顯示轉败佳賴示效果。 本創作提供一種液晶顯示器之動態背光調變系統，藉由處理一訊號在 ' 舰液晶面板顯示時’先行調整液日a日顯示ϋ之背光亮度以及訊號強度調 . 整，達成顯示藉由該處理過之訊號所提供畫面。 根據上述，本創作提供一種動態二維背光調變系統。一灰階區域分 割單70，用以接收一灰階訊號並分割該灰階訊號成複數灰階區域訊號。一 灰階訊號分析分離單元與灰階區域分割單元電性連接，用以接收並分析灰 階區域讯號以產生灰階訊號的一灰階分布平均值與一灰階分布對比值。一 灰階背光調整單元與灰階訊號分析分離單元電性連接，用以接收灰階分布 平均值並根據灰階分布平均值產生一灰階輸出背光控制訊號。一灰階訊號 7 M352697 • 化單元與灰階訊號分析分離單域性連接，㈣接階分布對比 - Λ階輸出背光控制訊號，藉以產生-灰階分布對比值之變化。一灰階 純合成錄為紅綠鮮色織單元與械訊麟比触單元電性連接， 用以將=綠藍彩色訊號根據灰階分布對比值之變化做補償並合成轉化為 一紅綠藍單色峨。-單色區域分财元，㈣魏紅、單色訊號並分 ' ^階城成複數單色輯峨。—單色減讀分料域單色區域分 . 割早7L電性連接，収接收並分析單色區域讀以產 . 料平均值與—單色分布對比值。-單色背細整單域單色訊號分析分 料元Ζ性連接’肋触單色分布平均值與灰階輸it!背紐槪號以產 • t一t藍綠輸出背光控制訊號。一單色訊號對比強化單元與單色訊號分析 刀離單元電性連接’用以接收單色分布對比值與紅藍綠輸出背光控制訊 號，藉以產生一紅綠藍彩色混合訊號。 以下藉由具體實施例配合所附的圖式詳加說明，應當更容易瞭解本創 作之目的、技術内容、特點及其所達成之功效。 【實施方式】 圖1為根據本創作之一實施例說明一動態二維背光調變系統架構圖。 動態二維背光調變系統10包括有一區域分割單元1〇2、一訊號分析分離單 7G 104、一訊號對比強化單元1〇6、一灰階彩色合成分離為RGB單色訊號 單元108、一灰階背光調整單元n〇以及一 RGB單色背光調整單元112。 於-實施例中，區域分割單元1〇2用以將輸入訊號1〇1 (灰階訊號）分割 • 《多個小範圍區域訊號103 ’訊號分析分離單元104接收並分析每-區域 訊號103以產生一輸入訊號1〇1之分布平均值1〇5與分布對比值1〇7。灰 階背光調整單元110接收該分布平均值1〇5並根據其產生一灰階輸出背光 控制訊號109 ’藉以控制背光模組（圖上未示）所發出之顯示光源在一預 定範圍中。 - 另一方面’訊號分析分離單元1〇4輸出分布對比值1〇7至訊號對比強 • 化單元106。訊號對比強化單元1〇6根據該分布對比值1〇7判斷訊號強度 8 M352697 之壳階最兩值以及暗階最低值是否在預定範圍中，同時考慮輸出背光控制 訊號109於背光調整之補償，藉以延伸訊號比例以顯示較細部之顯=晝 面。強化後之分布對比值107傳到灰階彩色分離為RGB單色訊號單& 108。灰階彩色分離為RGB單色訊號單元108將原始彩色輪入訊號丨丨丨根 據灰階分布對比值1G7之變化做補償並將二者合成轉化為RGB彩色混合^ 號113，此訊號用來控制液晶偏轉角度以影響RGB三原色光通量大小。以 上為本創作針對白光LED背光所提出之二維背光調變技術。 其次，針對RGB三色LED背光調變，區域分割單元1〇2接收由灰階 彩色合成分離為RGB單色訊號單元1〇8轉化的RGB彩色混合訊號113， 並將其由RGB彩色混合訊號113分別分割為多個小範圍區域訊號115。訊 號分析分離單元104接收並分析每一單色訊號之每一區域訊號115，以得 到彩色輸入訊號ill之分布平均值117與分布對比值119。RGB單色背光 調整單元112接收分布平均值117並根據其產生一 RGB單色輸出背光控制 訊號⑵，藉以控制RGB單色背光模組（圖上未示）所發出之顯示光^在 -預定範圍中。另-方面’訊號對比強化單元1()6接收訊號分析分離單元 104輸出之RGB三&分布對比值119，並根據其判斷訊號強度之亮階最高 值以及暗階最健是否在默範时，同時考慮RGB單色輸时光控制訊 號121的背光調整之補償，藉以延伸訊號比例以顯示較細部之顯示畫面。 強化後之分布對比值119傳到灰階彩色分離為RGB單色訊號單元1〇8，再 轉化為RGB混合訊號113 ’此RGB彩色混合訊號113用來控制液晶偏轉 角度以影響RGB三原色光通量大小。此即本創作針對RGB三色LED背光 所提出之二維背光調變技術。 藉由前述的關係，可以得到本創作動態對比加強方法的步驟，請同時 參閱圖2與圖3所示。圖2為本創作針對白光LED背光控制流程。首先， 處理原始輸人訊號為雄與彩色分量後，分贼卩冑峨為多個小範圍灰階 區域訊號（步驟20)。其次，分析灰階區域訊號之強度分布，並分離灰階 區域訊號以得到灰階訊號之分布平均值與分布對比值（步驟22)。—方面 錯存分布平均值’並對分布平均值與前多張晝面相_相鄰區域所得分布 9 M352697 平均值進行平均處理，由此產生新的區域背光㈣訊號（步驟24)。另一 方面’儲存分布對比值並分析相同與相舰域之分布對比值以重新分配分 布強度’啊配合挪24產生之區域背光控制織腳償以產生新的轉換 f程式（步驟26 )。健存步驟26所得轉換方程式並與前多張畫面相同與相 鄰區域所得轉換方程式鮮均處理，以產生_平均轉換柿式（步驟 30)其後以步驟30所得的平均轉換方程式轉換原始輸入訊號之灰階分量 (步驟32)。之後原始輸入訊號之彩色分量根據灰階經轉換前後訊號之變 化做補償動作後，與轉織細減合紐轉化為臟混合減以做為白 光LED背光之液晶控制訊號（步驟34)。 -圖3所示為根據本創作之一實施例針對RGB彩色led背光處理之流 程:意圖。分離步驟34之RGB混合訊號分為RGB單色訊號後，分別分 割單色晝面為多個小顧單色區域訊號（步驟31)。其次，分析單色區域 訊號之強度分布’並分離單色區域訊號以得到RGB單色訊號之分布平均值 f刀布對比值（步驟33)== —方面儲存分布平均值，並將分布平均值與前 多張畫面相同與相鄰區域所得分布平均值進行平均處理，加上步驟24之區 域背光控制訊號（白光背光控制訊號）以產生腦單色區域背光控制訊號 (步驟35)。另一方面，儲存步驟33得到之RGB分布對比值，並分析相 同與相鄰H域之分布對比值將分布強度重新分配，同時配合步驟產生之 RGB單色區域背光控制訊號做補償以產生新的轉換方程式（步驟37)。儲 存所得轉換方程式並與前多張畫面相同油祕域所得轉換方程式做平均 處理，使產生新的平均轉換方程式（步驟39)。其後將步驟31之rgb單 色輸入訊舰過平均賴絲雜織產生RGB單&魏做為彩色咖 背光之液晶控制訊號（步驟41)。 。參閱圖4為訊號分析、分離與強化前後之訊號強度分布比對圖。經由 «；分析分料福每—區賴號純分析，可制輸人訊號之分布平均 值與分布對比值，其分布對比值制訊麟比強化單元，判斷該訊號強度 之亮階最高伽及讀最低值是雜歡姻巾，藉以延伸《比例以得 到最佳晝面耻。舉例來說：若區域訊賊欲產生_較暗献較亮的晝面 M352697 時，若該顯示區域較廣泛，則勢必造成在該區域的對比度有不佳的情況， 畫面成為霧狀。透過前述方式重新分配之後，延伸訊號比例、輸出經過調 整的訊號，將原先分布強度範圍拉大，即可得到較細緻、有層次的顯示晝 面，解決液晶顯示器在黑畫面亮度太亮與亮晝面又不夠亮的缺點。 以上所述之實施例僅係為說明本創作之技術思想及特點， 其目的在使熟習此項技藝之人士能夠瞭解本創作之内容並據以 實施，當不能以之限定本創作之專利範圍，即大凡依本創作所 揭示之精神所作之均等變化或修飾，仍應涵蓋在本創作之專利 範圍内。M352697 VIII. New description: (9 years 711/'correction ί Supplement [new technical field] This is a dynamic backlight modulation system for image scanning, especially for dynamic backlight modulation of image display of liquid crystal display [Prior Art] The hardware of Flat Display has approached the mature stage, such as: backlight module, panel or driver circuit, the degree of influence on image quality has been gradually reduced, but improved. The quality of the surface display is still the direction of everyone's efforts. In the past, the most user-conscious quality part was the brightness (cd/m2) of the flat panel display. There are two ways to increase the brightness. One is to increase the light transmittance of the LCD panel. The other is to increase the brightness of the background light. However, the more cumbersome products do not see the better products. The display is too bright and often makes the eyes feel uncomfortable. On the one hand, it is easy to cause visual fatigue, and at the same time it makes pure The contrast between black and pure white is reduced, affecting the performance of color scales and gray scales. The screen is measured under both white and all black conditions. The brightness ratio is called Contrast. In the past, the illumination unit used in the LCD backlight was the lamp in the CCFL's backlight module. The brightness of the light source given to all the display surfaces was a value. 'The contrast enhancement technology used is only a static enhancement technique, only the contrast between the large signal and the fixed gray scale, or the arrangement of the liquid crystal molecules causes the luminous flux to be affected to produce a darker hue. However, the liquid crystal molecules open and close. The time will cause light leakage problems in the vicinity, and the light leakage will result in a dark or even gray state when the screen displays a darker surface. Therefore, the problem of light leakage is still one of the urgent problems to be solved. Currently LCD backlight The lighting unit used is LK). The advanced backlight control technology with LED light source and segmentation control can create a vivid and vivid visual experience, and greatly reduce the power consumption of the LCD TV, which can be reduced by up to 80%. Compared with the CCFL, which is mainly used in large-screen LCD backlight control on the market, LEDs are much more energy efficient than LCD backlights. In fact, the optical efficiency of LEDs is currently comparable to that of CCFLs. Its high energy efficiency is not a natural result of its optical efficiency (lumen per watt), but because its brightness can be more flexibly and effectively controlled to meet the brightness of the image. M352697 seeking. The two-dimensional backlight brightness control using the -group addressable LED array is more vivid. The contrast is stronger, the color gamut is wider, and the color saturation is better. In the past few years, a variety of brightness control techniques have been adopted in CCFL t-light control. For example, sometimes the entire backlight is dimmed to meet the brightness requirements of the image, which is a technique called dimming. If the dimming is performed along a single axis (for example, by controlling the brightness of a group of CCFL fluorescent lamps), it is called one-dimensional dimming. With the recent reduction in LED cost and improved performance, LEDs are becoming more and more viable, so this technology may become a more efficient back-filament control technology for New Lion. And LED can be loosely arranged into a two-dimensional array to achieve a separate control of each solution - the fact that κ level and vertical direction dimming is possible 'this is impossible in the past lion CCFL ^ two-dimensional adjustment Light energy locally produces more light behind the bright areas of the displayed picture, while producing less light in the dark areas. If the white LED is not used and the rGB tri-color LED is used, then the two-dimensional LED backlight control is better. By controlling the brightness of the red, green, and blue LEDs in RGB, a color gamut that is much wider than the conventional backlight ^CD panel can be achieved. Therefore, the RGB LED's # light produces a brighter, deeper 'more saturated color. Therefore, the color (4) of the B) can be seen through the wisdom legs and degrees (4) _ LED backlight color. Such mapping algorithms should not change the white, skin color and soft colors in the image, but can expand the saturated color to only the brightness of the LED to illuminate the RGB LED in a two-dimensional array mode and on a monochrome basis. Its separate control (ie, one-dimensional color shading control) not only reduces power consumption, but also improves color gamut and contrast. First of all, the method eliminates the color enamel film, and the color filter is the main absorber of light energy, it will lose the light b or more + after the color film is removed, not only can the enamel film be removed 7〇% Light energy loss can also be used to filter the cost of the color film. The cost of filtration and color film is a considerable part of the total cost. In fact, after the pro-chip is saved, it is also important to improve the yield and reduce the time of production. Its cost is based on ccfl data. If LED is used as the backlight, its cost will greatly exceed this ratio, which is about 50% of the cost. After the system sequence system, the removal of the filter and color film is equivalent to an increase in luminous efficiency of 7G%, which is very impressive. This means that the number of LEDs can be reduced by 7〇%, and the cost of LEDs can be reduced by 10,000. Moreover, after the number of LEDs is reduced by 7G%, the heat generation can be corrected by M3.52697 (9|1L07). The power consumption can also be reduced by 7〇%. Not only that, after using the field VS, ;, the mother pixel is divided into three sub-pixels, the thin film transistor TFT can also be reduced by three times, = the pixel area is increased by two times; or, if the storage pixel area is unchanged, At the same screen size, you can increase the resolution by a factor of three. There are threats to the above two-dimensional LED f light control _ advantage, for the image display (four) how to strengthen, f;. The relationship between the knife and cloth and the adjustment of the light source at the same time make the enamel more lacquered, and it has always been the direction of development. [New content] 9 _ this & for the input image tfL number, dynamic adjustment and strengthen the contrast between the signals, but also the time to touch the brightness of the time, when the customs change the brightness of the Wei Shi show Low and black screen brightness is too bright.曰This creation is based on dynamically adjusting and enhancing the contrast between the signals to achieve the juice, or to reduce the brightness level, to shift the brightness level to the positive or negative side, and to make the input image according to the new Probability distribution _ and the improvement of the quality of the liquid crystal display of the adjustment of the back wire. This creation is to redistribute the signal strength (signal average grayscale value) distribution probability to generate a new equation (transferfUnetiGn), by converting the county's input to the brewing conversion equation. In order to make the liquid crystal display turn off the good effect. The present invention provides a dynamic backlight modulation system for a liquid crystal display. By processing a signal during the display of the 'liquid crystal panel', the backlight brightness and signal intensity are displayed on the a day of the liquid day, and the display is achieved by the processing. The signal provided by the signal. According to the above, the present invention provides a dynamic two-dimensional backlight modulation system. A gray-scale area dividing unit 70 is configured to receive a gray-scale signal and divide the gray-scale signal into a complex gray-scale area signal. A gray-scale signal analysis separation unit is electrically connected to the gray-scale region division unit for receiving and analyzing the gray-scale region signal to generate a gray-scale distribution average value and a gray-scale distribution comparison value of the gray-scale signal. A gray-scale backlight adjustment unit is electrically connected to the gray-scale signal analysis separation unit for receiving the gray-scale distribution average value and generating a gray-scale output backlight control signal according to the gray-scale distribution average value. A gray-scale signal 7 M352697 • The unit is separated from the gray-scale signal analysis by a single-domain connection. (4) The comparison of the order distribution - the step-by-step output backlight control signal, in order to generate a change in the contrast value of the gray scale distribution. A gray-scale pure synthetic recording is recorded as a red-green color-dyed unit and a mechanical-synchronous touch unit. The green-blue color signal is compensated and converted into a red, green and blue color according to the change of the gray-scale distribution contrast value. Monochrome 峨. - The monochrome area is divided into financial elements, (4) Wei Hong, the monochrome signal and the '^ step city into a plural monochrome series. - Monochrome subtraction of the sub-field of the monochromatic area. Cut 7L electrical connection, receive and analyze the monochrome area read to produce the average value of the material and the - monochrome distribution. - Monochrome back fine single-field monochrome signal analysis component elementary connection 'ribbed monochromatic distribution mean and gray scale input it! Back button number to produce • t-t blue-green output backlight control signal. A monochrome signal contrast enhancement unit and a monochrome signal analysis knife is electrically connected to the unit to receive a monochrome distribution contrast value and a red, blue and green output backlight control signal to generate a red, green and blue color mixed signal. The purpose, technical content, features, and effects achieved by the present invention should be more readily understood by the detailed description of the specific embodiments and the accompanying drawings. [Embodiment] FIG. 1 is a block diagram showing a dynamic two-dimensional backlight modulation system according to an embodiment of the present invention. The dynamic two-dimensional backlight modulation system 10 includes a region dividing unit 1〇2, a signal analysis separation unit 7G 104, a signal contrast enhancement unit 1〇6, a gray scale color synthesis separation into an RGB monochrome signal unit 108, and a gray The step backlight adjustment unit n〇 and an RGB monochrome backlight adjustment unit 112. In the embodiment, the area dividing unit 1〇2 is used to divide the input signal 1〇1 (gray level signal) • “Multiple small area signal 103” signal analysis separating unit 104 receives and analyzes each area signal 103 to A distribution average value of 1〇5 of the input signal 1〇1 and a distribution comparison value of 1〇7 are generated. The gray scale backlight adjustment unit 110 receives the distribution average value 1〇5 and generates a gray scale output backlight control signal 109 ′ according to which the display light source emitted by the backlight module (not shown) is controlled in a predetermined range. - On the other hand, the signal analysis separation unit 1〇4 outputs a distribution comparison value of 1〇7 to the signal contrast enhancement unit 106. The signal contrast enhancement unit 1〇6 determines whether the maximum value of the shell order of the signal intensity 8 M352697 and the lowest value of the dark order are in a predetermined range according to the distribution comparison value 1〇7, and considers the compensation of the output backlight control signal 109 for backlight adjustment. By extending the signal ratio to display the display of the thinner part. The enhanced distribution contrast value 107 is passed to the gray scale color separation to RGB monochrome signal single & 108. The gray scale color is separated into RGB monochrome signal unit 108 to compensate the original color wheel signal 丨丨丨 according to the change of the gray scale distribution contrast value 1G7 and synthesize the two into RGB color mixing number 113, this signal is used to control The liquid crystal deflection angle affects the RGB three primary color luminous fluxes. Above is the two-dimensional backlight modulation technology proposed for white LED backlighting. Next, for the RGB three-color LED backlight modulation, the area dividing unit 1〇2 receives the RGB color mixed signal 113 converted by the gray-scale color synthesis into the RGB monochrome signal unit 1〇8, and is composed of the RGB color mixed signal 113. They are divided into a plurality of small-range area signals 115, respectively. The signal analysis separation unit 104 receives and analyzes each of the area signals 115 of each of the monochrome signals to obtain a distribution average value 117 and a distribution comparison value 119 of the color input signals ill. The RGB monochrome backlight adjustment unit 112 receives the distribution average 117 and generates an RGB monochrome output backlight control signal (2) according to the same, thereby controlling the display light emitted by the RGB monochrome backlight module (not shown) to be within a predetermined range. in. The other aspect of the signal comparison enhancement unit 1 (6) receives the RGB three & distribution comparison value 119 outputted by the signal analysis separation unit 104, and determines whether the highest value of the signal intensity is the highest value of the signal intensity and whether the darkest level is the most robust. At the same time, the compensation of the backlight adjustment of the RGB monochrome time control signal 121 is considered, thereby extending the signal ratio to display the display of the finer portion. The enhanced distribution contrast value 119 is transmitted to the gray scale color separated into RGB monochrome signal unit 1〇8, and then converted into RGB mixed signal 113'. This RGB color mixed signal 113 is used to control the liquid crystal deflection angle to affect the RGB three primary color luminous fluxes. This is the creation of two-dimensional backlight modulation technology for RGB three-color LED backlight. Through the foregoing relationship, the steps of the dynamic contrast enhancement method of the present creation can be obtained, please refer to FIG. 2 and FIG. 3 at the same time. Figure 2 is a flow control process for white LED backlights. First, after processing the original input signal as the male and color components, the thief becomes a plurality of small-scale gray-scale regional signals (step 20). Next, the intensity distribution of the gray-scale region signal is analyzed, and the gray-scale region signal is separated to obtain a distribution average value and a distribution comparison value of the gray-scale signal (step 22). - Aspect The mean value of the distribution is 'and the average of the distribution and the distribution of the previous multiple 昼 phase _ adjacent areas 9 M352697 averaging, resulting in a new area backlight (four) signal (step 24). On the other hand, 'store the distribution comparison value and analyze the distribution value of the same and the ship's domain to redistribute the distribution intensity', and cooperate with the region-generated backlight control to generate a new conversion f program (step 26). The conversion equation obtained in step 26 is the same as that of the previous plurality of pictures and the conversion equation obtained by the adjacent region is freshly processed to generate an average conversion persimmon type (step 30), and then the original conversion equation obtained in step 30 is used to convert the original input signal. Grayscale components (step 32). Then, the color component of the original input signal is compensated according to the change of the gray-scale signal before and after the conversion, and is converted into a dirty mixture and reduced as a liquid crystal control signal of the white LED backlight (step 34). - Figure 3 shows the process for RGB color led backlight processing in accordance with one embodiment of the present invention: intent. After the RGB mixed signal of the separating step 34 is divided into RGB monochrome signals, the monochrome plane is divided into a plurality of small monochrome area signals (step 31). Secondly, the intensity distribution of the monochromatic area signal is analyzed and the monochromatic area signal is separated to obtain the average value of the RGB monochromatic signal f. The contrast value of the knife cloth (step 33) == - the average value of the storage distribution, and the average value of the distribution The average value of the distribution of the adjacent regions is averaged as in the previous plurality of pictures, and the area backlight control signal (white light backlight control signal) of step 24 is added to generate a brain monochrome area backlight control signal (step 35). On the other hand, the RGB distribution contrast value obtained in the storage step 33 is analyzed, and the distribution contrast value of the same and adjacent H domain is analyzed to redistribute the distribution intensity, and the RGB monochrome area backlight control signal generated by the step is compensated to generate a new one. Convert the equation (step 37). The resulting conversion equation is stored and averaged in the same oil domain as the previous multiple images, resulting in a new average conversion equation (step 39). Thereafter, the rgb single color input of the step 31 is input to the average ship, and the RGB single & Wei is used as the liquid crystal control signal of the color coffee backlight (step 41). . Refer to Figure 4 for the signal intensity distribution comparison diagram before and after signal analysis, separation and enhancement. Through the analysis of the analysis of the distribution of the material, the average value and distribution of the input signal can be used to determine the distribution value of the input signal, and the distribution comparison value is used to determine the intensity of the signal. The minimum reading is a miscellaneous affair, in order to extend the ratio to get the best shame. For example, if the regional thief wants to produce a brighter faceted M352697, if the display area is wider, it will inevitably cause poor contrast in the area, and the picture will be foggy. After redistribution in the above manner, the signal ratio is extended, the adjusted signal is output, and the original distribution intensity range is enlarged, so that a finer and more hierarchical display surface can be obtained, and the brightness of the black screen is too bright and bright. The shortcomings are not bright enough. The embodiments described above are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement them according to the scope of the patent. That is, the equivalent changes or modifications made by the people in accordance with the spirit revealed by this creation should still be covered by the scope of the patent of this creation.
11 M352697 【圖式簡單說明】 圖1為本創作之一實施例說明一動態二維背光調變系統架構圖。 圖2所示為本創作之針對白光LED背光控制流程示意圖。 圖3所示為本創作之針對彩色LED背光控制流程示意圖。 圖4所示為根據本創作之訊號分析、分離與強化前後之訊號強度分布比對 - 圖。11 M352697 [Simple Description of the Drawings] FIG. 1 is a structural diagram of a dynamic two-dimensional backlight modulation system according to an embodiment of the present invention. Figure 2 shows the schematic diagram of the backlight control process for white LEDs. Figure 3 shows the schematic diagram of the color LED backlight control process for this creation. Figure 4 shows the comparison of the signal intensity distribution before and after the signal analysis, separation and enhancement according to this creation.
12 M352697 【主要元件符號說明】 ίο 動態二維背光調變系統 101 輸入訊號 102 區域分割單元 . 103 、 115 區域訊號 104 訊號分析分離單元 105 、 117 分布平均值 106 訊號對比強化單元 107 、 119 分布對比值 108 灰階彩色合成分離為RGB單色訊號單元 109 灰階輸出背光控制訊號 110 灰階背光調整單元 111 彩色輸入訊號 112 RGB單色背光調整單元 113 RGB彩色混合訊號 121 RGB單色輸出背光控制訊號 _ 20、31 分割產生灰階、單色區域訊號的步驟 22、33 分析產生分布平均值與分布對比值的步驟 ‘ 24、35 進行包含分布平均值的平均處理的步驟 - 26、37 產生新的轉換方程式的步驟 30 ' 39 產生新的平均轉換方程式的步驟 32 以新的平均轉換方程式轉換灰階分量的步驟 34 產生白光LED背光之液晶控制訊號的步驟 41 產生彩色LED背光之液晶控制訊號的步驟 1312 M352697 [Main component symbol description] ίο Dynamic two-dimensional backlight modulation system 101 Input signal 102 Area division unit. 103, 115 Area signal 104 Signal analysis separation unit 105, 117 Distribution average 106 Signal contrast enhancement unit 107, 119 Distribution comparison Value 108 gray scale color synthesis separated into RGB monochrome signal unit 109 gray scale output backlight control signal 110 gray scale backlight adjustment unit 111 color input signal 112 RGB monochrome backlight adjustment unit 113 RGB color mixed signal 121 RGB monochrome output backlight control signal _ 20, 31 steps to generate gray-scale, monochrome area signals, steps 22, 33 to analyze the steps of generating the distribution mean and distribution comparison value '24, 35 to perform the averaging process including the distribution mean - 26, 37 to generate new Step 30 of converting equations 39 Step 39 of generating a new average conversion equation Step 34 of converting gray scale components with a new average conversion equation Step 34 of generating a liquid crystal control signal for white LED backlights Steps for generating liquid crystal control signals for color LED backlights 13