200912886 九、發明說明： 【發明所屬之技術領域】 *本系統及方法係關於將顯示器分割成區之基礎上動態改 n頁不螢幕之免度的動態功率控制（Dpc)系統及方法。 【先前技術】 傳統顯不螢幕係用以將視訊與電腦影像顯示給個人及小 的人群。此等螢幕係以基於諸如陰極射線管、lcd及電漿 技術且其產生足夠壳度的高解析度影像用於室内觀看。 為了在至内丨至外设定下將冑止與移動影像顯示給大的 人群，使用一替代技術’其可提供U米寬到20米寬及超 出20米寬的營幕尺寸’在明亮日光狀況下將使用足夠亮 度。已出現的理想情況下適於此工作之技術使用發光二極 體（LED)作為光產生裝置。許多年來咖螢幕已可用且世 界上數百個LED螢幕係安裝於運動與公共場所。 使用LED之顯示螢幕係相對能量有效的裝置，因為其功 率消耗係與其尺寸及光輸出成正比。通常，對於—定螢 幕尺寸’顯示亮影像時功率消耗高，且顯示暗影像時功率 消耗低。對於永久安裝於—場所巾之led螢幕，為其加 (即提供恰當電麼與電流）所需之電源供應的額定值（例如瓦 ㈣功率額定值）可以很容易由製造商之技術資料進行叶 (V充且勞Γ於採用勞幕全額定光輸出顯示最亮可能影像 (真充螢幕之純㈣像）時其需要的功率量。在此 螢幕正在汲取其以往可以汲取的最多功率(即最大功 且電源供應必須具有足夠較值以處理此最大功率狀況。’ 130831.doc 200912886 近來，已針對小LED螢幕（1.5至2米寬）出現市場該等 小led螢幕之概念係類似於大電漿或lcd監視器，因為其 係位於櫃中之完整監視器’該監視器可以簡單地懸掛於 (例如)購物中心之牆壁上，且可用以顯示各種内容，例如 廣告。通常，市場之此區段係非常注重價格的。因此，需 要具有可以由非專業人員安裝(即，足夠簡單以由典型； 費者安裝）的有競爭性定價之登幕。安裝簡單性降低總成 本且對消費者有吸引力。 與成本相關的因素包括為L E D蟹幕提供所需功率所必需 之電源供應的尺寸或額定值，以及與提供獨立或特殊電源 線或饋電線以將必須功率、電壓及/或電流提供給LED螢幕 相關聯之費用。 如上所述，LED螢幕之功率消耗通常係與所顯示之影像 的壳度成正比。影像之亮度内容從極暗（無細節之純黑背 景）變為極亮（無細節之純白背景）。 由於營幕設計者不控制L E D螢幕或任何其他螢幕上所顯 不之内容之亮度，所以必須將螢幕設計成應付最壞情況之 功率祕，即顯示白色背景。在此情況下，㈣正在從供 應及取最大功率。設計及安裝顯示#幕巾將以下因素納入 考量之中： 1.高於某—所需功率，例如最大發幕功率（用於顯示白色 煮景）起I 5 k\V時，無法從典型讀電線（例如從規則v 單相插座)為螢幕加電。在此一情況下，必須安裝特殊主 饋線或電源線以為螢幕加電，因此增加安裝成本。 130831.doc 200912886 螢幕内之電源供應單元之總功率額定# /5 送最大功率。此……羊額疋值必須足以能輸 全容 ·^龐大且丰重的螢幕電源供應單元，其 夕數時間並不加以使用。大 步增加螢幕成太伽壬θ 堂綦電源供應進一 棊成本與重量’而且需要熱散逸。 卻::由力於需要已增加熱散逸，所以榮幕内之通風系統之冷 八:必須應付以最大功率連續運作期間（即設計營幕顯 :::使用的最壞情況方案期間)所產生之已增加熱。 曰1要更多風扇來使空氣循環，伴有相關聯成本'重 罝及雜訊增加。 顯然需要降低螢幕之功率需要。降低[ED發幕所汲取之 力率的簡單方法係將光輸出限制為一低值，即減小亮 度，然實現降低功率之目標，但此無疑具有使所有已顯 不々像暗狄且無生氣之明顯缺點。降低榮幕所消耗之功率 的另方法包括頒予⑽⑽㈣之專利第7，193 592號（其係 以引用方式全文併入本文中）中所說明的限制提供給螢幕 之電流。200912886 IX. Description of the invention: [Technical field to which the invention pertains] * The system and method relate to a dynamic power control (Dpc) system and method for dynamically changing the n-page non-screen on the basis of dividing the display into zones. [Prior Art] Traditional display screens are used to display video and computer images to individuals and small groups of people. These screens are used for indoor viewing based on high resolution images based on techniques such as cathode ray tube, lcd and plasma technology which produce sufficient shell size. In order to display the moving image to a large crowd in the inner and outer settings, an alternative technology is used, which can provide a U-wide width of up to 20 meters wide and a width of 20 meters wide. Sufficient brightness will be used in the situation. A technique that has been ideally suited for this work has used a light emitting diode (LED) as a light generating device. For many years, coffee screens have been available and hundreds of LED screens in the world have been installed in sports and public spaces. A display screen using LEDs is a relatively energy efficient device because its power consumption is proportional to its size and light output. Generally, the power consumption is high when displaying a bright image for a fixed screen size, and the power consumption is low when a dark image is displayed. For a led screen permanently installed in a place towel, the rating of the power supply required to add it (ie provide the appropriate power and current) (eg watt (four) power rating) can be easily determined by the manufacturer's technical data. Performing the power of the leaf (V charging and laboring to display the brightest possible image (the pure (4) image of the real screen) with the full rated light output of the screen. The screen is taking the most power it can draw in the past (ie Maximum power and power supply must have enough value to handle this maximum power condition.' 130831.doc 200912886 Recently, the concept of small LED screens has been shown for small LED screens (1.5 to 2 meters wide). Pulp or lcd monitor because it is a complete monitor in the cabinet. The monitor can simply be hung on, for example, the wall of a shopping mall and can be used to display various content, such as advertisements. Usually, this area of the market The segmentation is very price-conscious. Therefore, it is necessary to have a competitive pricing that can be installed by non-professionals (ie, simple enough to be installed by a typical; fee installer). Singleness reduces total cost and is attractive to consumers. Cost-related factors include the size or rating of the power supply necessary to provide the required power to the LED crab screen, and the provision of independent or special power lines or feeders. The cost associated with providing the necessary power, voltage, and/or current to the LED screen. As noted above, the power consumption of the LED screen is typically proportional to the shell of the displayed image. The brightness of the image is extremely dark (none) The pure black background of the details becomes extremely bright (no white background with no details). Since the screen designer does not control the brightness of the content displayed on the LED screen or any other screen, the screen must be designed to cope with the worst case. The power is secret, that is, the white background is displayed. In this case, (4) is supplying and taking the maximum power. Design and installation display #Screen towel takes the following factors into consideration: 1. Above a certain - required power, for example, maximum When the screen power (used to display white cooking) is I 5 k\V, it is not possible to power up the screen from a typical read wire (eg from a regular v single-phase socket). In this case A special main feeder or power cord must be installed to power up the screen, thus increasing installation costs. 130831.doc 200912886 Total power rating of the power supply unit in the screen # /5 Send maximum power. This...the value of the sheep must be sufficient to lose Full capacity · ^ Huge and plentiful screen power supply unit, its TIME time is not used. Greatly increase the screen into a terabyte θ 綦 綦 power supply into a cost and weight 'and need heat dissipation. In order to increase the heat dissipation, the ventilation system in the screen is cold: it must cope with the increased heat generated during the continuous operation of maximum power (ie during the worst-case scenario of the design::: use of the worst case scenario).曰1 requires more fans to circulate the air, with associated costs of 'repetition and noise increase. Clearly there is a need to reduce the power requirements of the screen. A simple way to reduce the rate of force drawn by the ED is to limit the light output to a low value, that is, to reduce the brightness, but to achieve the goal of reducing power, but this undoubtedly has made all the appearances seem dark and no The obvious shortcomings of anger. Another method of reducing the power consumed by the screen is to limit the current supplied to the screen as described in the specification of (10), (10), and (4), which is incorporated herein by reference.
Nak_ra說明一種冷光（EL)顯示勞幕，其中藉由來自一 驅動電路的-驅動電流來驅動像素。嫩咖则中之驅動電 路依據驅動電流之總和之增加來限制電流。 需要進-步降低螢幕之功率需要而不實質上影響螢幕上 所顯示之内谷 '影像或文字之亮度。 【發明内容】 本系、、先及方法之目的係克服傳統顯示器之缺點。此及 其他目的係藉由一種顯示系統來實現，該顯示系統具有： 130831.doc 200912886 一螢幕，其係經組態用以採用一螢幕亮度值顯示一影像； 及-處理器，其係經組態用以將該螢幕分割成區，例如， 以經由各區中所顯示之該影像之即時内容分析決定該區之 -區焭度；及該等區之一之區亮度大於一臨界值時藉由一 因數降低該螢幕亮度。 該臨界值係與從驅動一區之一電源供應所汲取的一最大 額定電流相關聯，且各區可以藉由一個別電源供應來驅 動。該處理器亦可經組態用以測量橫跨該螢幕移動一預定 數目之像素之虛擬區的虛擬區亮度，及該等虛擬區之一之 虛擬區亮度大於該臨界值時藉由該因數降低該螢幕亮度。 從下文所提供的詳細說明將明自本㈣及方法之其他應 用區域ϋ瞭解，詳細說明與特定範例，雖然指示該等系 、充及方法之I!例性具體實施例，係意欲僅用於解說目的且 並非意欲限制本發明之範_。 【實施方式】 以下某些範例性具體實施例之說明本質上僅為範例性且 決不意欲限制本發明、其應用、或使用。以下本系統及方 法之具體實施例之詳細說明中，參考形成其一部分之附 圖’且在該等附圖中以解說方式顯示可以實施所述系統及 方法的特定具體貝施例。充分詳細地說明此等具體實施例 以使得熟習此項技術者可以實施目前所揭示之系統及方 法’且應瞭解，可以利用其他具體實施例 與邏輯變μ不背離本系統之精神與㈣。υ 因此不應在限制意義上理解以下詳細說明，且僅藉由所 130831.doc 200912886 附申凊：利範圍來定義本系統之範，。本文圖式中之參考 數字之前置數位通常對應於圖式編號，不同之處僅為，出 現在多個圖式中的相同組件係採用相同參考數字來識別。 此外，為了清晰之目的’將熟知裝置、電路、及方法之詳 細忒明省略以便不使本系統之說明模糊不清。Nak_ra illustrates a cold light (EL) display screen in which pixels are driven by a drive current from a drive circuit. The drive circuit in the tender coffee system limits the current according to the sum of the drive currents. It is necessary to further reduce the power requirements of the screen without substantially affecting the brightness of the image or text displayed on the screen. SUMMARY OF THE INVENTION The purpose of the system, prior art, and method is to overcome the shortcomings of conventional displays. This and other objects are achieved by a display system having: 130831.doc 200912886 a screen configured to display an image using a screen brightness value; and - a processor, the system The state is used to divide the screen into regions, for example, to determine the extent of the region by real-time content analysis of the image displayed in each region; and when the brightness of one of the regions is greater than a threshold value The brightness of the screen is reduced by a factor. The threshold is associated with a maximum rated current drawn from a power supply that drives one of the zones, and each zone can be driven by a separate power supply. The processor can also be configured to measure a virtual zone brightness of a virtual zone that moves a predetermined number of pixels across the screen, and wherein the virtual zone brightness of one of the virtual zones is greater than the threshold value by the factor The brightness of the screen. The detailed description provided below will be understood from the following (4) and other application areas of the method, the detailed description and the specific examples, although the specific embodiments of the methods and the methods are intended to be used only for The purpose of the explanation is not intended to limit the scope of the invention. The description of the following exemplary embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or use. In the following detailed description of the specific embodiments of the present system and method, reference is made to the accompanying drawings, which are incorporated in FIG. These embodiments are described in sufficient detail to enable those skilled in the art to implement the presently disclosed systems and methods. It is understood that other embodiments and logic can be utilized without departing from the spirit of the system. υ Therefore, the following detailed description should not be construed in a limiting sense, and the scope of the system is defined only by the scope of the application of 130831.doc 200912886. The reference digits in the figures herein generally correspond to the drawing numbers, except that the same components in the various figures are identified by the same reference numerals. In addition, the details of well-known devices, circuits, and methods are omitted in order to avoid obscuring the description of the system.
本系統及方法使用動態功率控制(Dpc)來降低及限制— 蝥幕顯示裝置(例如一LED螢幕)所汲取之最大功率，不影 響：有中間及低亮度内容之影像的品質。遇到包含高亮度 内容之影像時，DPC自動且實質上瞬間使影像亮度降低: 一使總功率消耗維持在預定義限制内之位準。The system and method use dynamic power control (Dpc) to reduce and limit the maximum power drawn by a curtain display device (e.g., an LED screen) without affecting the quality of the image with intermediate and low brightness content. When an image containing high-brightness content is encountered, the DPC automatically and virtually instantaneously reduces the brightness of the image: a level that maintains the total power consumption within a predefined limit.
除不影響具有中間及低亮度内容之影像之外，使用DPC 之本系統及方法允許螢幕最大功率消耗降低至—允許從規 則插座，例如23G V幹線插座（或具有適於恰當功率、電流 及電壓位準之相關聯電纜的任何其他適合電壓位準)而非 (例如）特殊3相供應，為LED螢幕加電的位準。即，不需要 特殊幹線供應’從而降低安裝成本。此外，具有DPC之營 幕使用較少電且因此更加生態友善，而且螢幕内需要較小 /較少電源供應單A ’從而降低螢幕之成本與重量。已降 低功率消耗導致已降低熱產生，其進而導致已降低冷卻需 要。因此，需要較少風扇來冷卻螢幕，從而進一步降低螢 幕之成本與重量且提供較安靜操作。 依據使用DPC來降低功率消耗而不影響具有中間及低亮 度内容之影像之品質的本系統及方法，將螢幕(例如㈣螢 幕)之作用區域分割成區。各區係藉由其自己的電源供應 13083l.doc 10- 200912886 單元(PSU)來驅動。藉由將進入場分割成在尺寸上 區完全相匹配之區即時分析欲顯示於發幕上之影像；號 此外，（例如）藉由根據即時内容分析決定各區之區光度 值，或白色/淺色影像區域，並選擇最 、评取冗k (例如採用最白 及/或淺色内容或影像所填充之區）來 术决疋取壳區之像素光 度值。 將最亮區之最Ad光度值或總像素光度值與—預定臨界 值作比較。臨界值係任-區中之像素達到之條件下將造成 從驅動該區之PSU汲取最大額定電流的值。 若任一區之已決定區S度值超過該預S限定值，則一處 理器藉由某-目標因數(其可為_預定或一計算之功率降 低因數）降低整個螢幕之輸出位準，以便降低功率消耗及 防止PSU過載。最高區之總像素位準等於或低於該限定值 時’則該處理器使螢幕輸出位準返回至正常。In addition to not affecting images with intermediate and low-light content, the system and method using DPC allows the maximum power consumption of the screen to be reduced to - allowing access from regular outlets, such as 23G V trunk outlets (or suitable for proper power, current and voltage) The level of any other suitable voltage level of the associated cable is not the (eg) special 3-phase supply that is the level at which the LED screen is powered. That is, no special trunk supply is required, thereby reducing installation costs. In addition, the camp with DPC uses less power and is therefore more eco-friendly, and requires less/less power supply single A' in the screen to reduce the cost and weight of the screen. The reduced power consumption has resulted in reduced heat generation, which in turn has reduced cooling requirements. Therefore, fewer fans are needed to cool the screen, further reducing the cost and weight of the screen and providing quieter operation. The system and method of using a DPC to reduce power consumption without affecting the quality of images having intermediate and low brightness content divides the active area of the screen (e.g., (4) screen) into zones. Each zone is driven by its own power supply 13083l.doc 10-200912886 unit (PSU). The image to be displayed on the screen is analyzed in real time by dividing the entrance into regions that are completely matched in the size region; in addition, the luminosity value of each region is determined, for example, by real-time content analysis, or white/ The light image area, and select the most, and evaluate the redundant k (for example, the area filled with the most white and / or light content or image) to determine the pixel luminosity value of the shell area. The most Ad luminosity value or total pixel luminosity value of the brightest region is compared with a predetermined threshold value. The critical value is the value of the maximum rated current drawn from the PSU driving the zone under the condition that the pixel in the zone is reached. If the determined S-degree value of any zone exceeds the pre-S limit value, then a processor reduces the output level of the entire screen by a certain target factor (which may be a predetermined or a calculated power reduction factor). In order to reduce power consumption and prevent PSU overload. When the total pixel level of the highest zone is equal to or lower than the limit value, the processor returns the screen output level to normal.
可以藉由一或多個因素來決定DPC所引起的最大螢幕功 率之目標降低因數。目標可為用以降低螢幕之總功率消耗 以便，例如，可以從典型單相插座（而非3相供應）操作螢 幕。一有益的附帶結果可能係降低驅動螢幕所需要之PSU 之數量，伴有相關聯成本及重量節省。或者，目標可為用 以降低功率消耗以便使其在一特定數量之PSU之範圍内， 或在一不同規格之PSU之容量範圍内Q 任一區之區光度超過預定DPC限定值時降低所顯示内容 之亮度的情況下，DPC對於普通觀看者之效應通常係不可 見的。考篁影像包含小的免細節區域的一情況；此可能低 130831.doc 200912886 於DPC限定值且營幕輸出將處於最大位準下。若影像包含 增加之亮細節區域，則罄莫私山y 利耸綦輸出位準將漸進式降低，反之 亦然。降低因數越重，則螢幕輸出位準降低將越早發生， 且其降得越低。使用依據本系統及方法之㈣展示一〇奴 功率降低因數。 如圖1之系統100所示，一顯示裝置（例如led螢幕110)包 括處理盗120，其係經組態用以實行Dpc且控制勞幕 110顯示影像並在任一區之亮度超過一儲存於輕合至處理 ⑽〇之記憶體130中之限定值時改變螢幕亮度。如所熟 知^己憶體130亦可儲存其他資料及應用軟體，包括由處 理器執仃以實行（例如）DPC之軟體指令。 處理器120可以經組態用以將營幕"0之作用顯示區域分 割成區，例如八個相同尺寸與形狀之區⑴。各區可以藉 由其自己的-或多個PSU來進行加電，其中圖艸將用於 =之咖顯示為虛線框140。—區之尺寸（採用像素測量） 或區數可以藉由許多因素來決定，例如全額定光輸出 最大單位面積功率消耗；由於dpc之併入而預期的 最螢幕功率之降低因t ’例如0.6之降低因數；及各區 之PSU的功率額定值。全額定輸出下 率消耗可以根據製造商之規格’或藉由測量面積功 二=靡處理器120係經組態用以即時分析進入影像 。就之各對應區之像素内容、決定最亮區之總像辛光产 :口、及，其與記憶體13。中所儲存的—預定臨界值作二 交。内容分析為熟知的，例如頒予Dimitrova之美國專利第 130831.doc 200912886 6,714,594號及頒予Nesvadba之美國專利申請公開案第 2004/0168205號中所述者，其各以引用方式全文併入本文 中。若最亮區之已決定最大區光度值，或該等區之任何區 之光度值超過該臨界值’則處理器12〇係經組態用以實行 ㈣及降低整個營幕之輪出或亮度位準1 了使輸出位準 降低之發生率最小化，需要區之形狀以最好可能方式表示 總影像之-"普通"片段。區形狀對Dpc性能具有顯著效 應。 例如，圖1中，將發幕i 1〇分割成八個編號為丄至8之區； 其中各區可為(例如)螢幕110之一半高&，或具有不同高度 (即具有一部分螢幕高度）。分析圖1中之各區時，將明白， 區2與3各具有比任何其他區高的總像素值，其係由於此等 區2與3之亮區域。區2或3中之高像素值可能良好地造成榮 幕輸出位準降低（若高於臨界值的話）。 與圖1相比，圖2顯示一具有八個區之螢幕21〇,其中顯 示與圖i之影像相同的影像’不同之處在於螢幕21〇之各區 為全（作用）螢幕南度。區分析（例如藉由處理器實行）顯 示圖2之區4與5具有最高像素值。不過，此等區4與5之每 個專用於冗區域（例如實際檢視景象中陽光普照之亮雲 木）之百刀比比圖！所示區2與3之每一個之專用於亮區域之 百分比低得多。圖2之螢幕21〇之情況下此等區4與5之每 一個之總像素光度和可能低於臨界值且因此不會造成螢幕 輸出位準降低。 圖1至2所示範例中，可以看到，圖2之八個全高度區提 13083],d〇c -13 - 200912886 供比圖i之八個半高度（或部分高度）區好的結果，因為不影 響或降低總内容或營幕亮度’即螢幕輸出位準降低得以最 小化。此係因為此範例中影像之頂部部分包含比底部部分 亮的内容且該等區為全高度，導致產生小於臨界值之區亮 度的平均化。當然，並不總是影像之頂部部分比底部部分 亮的情況，不過’其確實時常發生。目此’該系統可以具 有全高度^其使DPC鮮最小化且因此維持最寬影像範 圍上之影像亮度。圖3顯示—具有25仏144個像素且分割成 8個全高度區（各區係32xl44個像素）之螢幕㈣的一具體實 施例。 上所述|區可以具有其自己的一或多個電源供應單 元（削）。PSU係可m出電壓與功率範圍内。在一 無則的傳統發幕中，各PSU必須w強大以能在顯示純 白影像（即最大亮度/功率）時驅動其螢幕區域。Dpc之併入 使得可使用功率較小(因此較不昂貴)的削，或替代地， 各現有PSU可以驅動螢幕之較大區域。 計算每區所fpsu敎料，將藉由DPC所實現之功率 降低納入考量之中以獲得較低功率額定值之PSU。因此， 若DPC因數為(例如)〇6，則驅動該區所需要之最大功率 係·· 上顯示一純 白 (PZ〇NE WITH NO DPC)x〇,6 瓦特 其中PZONE WITH NO DPC係無DPC操作時在該區 影像所需要之功率。 分析包括欲顯示於螢幕上 之内容（例如影像）的 影像信號 13083l.doc •14- 200912886 以決定各像素之亮度值以預測無Dpc時在螢幕上顯示該影 像之條件下各個別營幕像素將沒取之電流。若任—區中之 所有像素之總電流（因而功率）超過該臨界值，則相應地降 低正個螢幕之輸出位準以不超過螢幕或PSU之額定功率額 定值。 為了實現螢幕像素性能之足夠準確預測，需要以恰當方 式選擇乜5虎路徑中進仃内容分析之位置。圖4顯示方塊圖 4〇〇 S顯不依據-具體實施例的一 led螢幕之信號路 徑’其中藉由視訊解碼器4轉收一複合視訊信號4〇5用於 解碼。已解碼信號穿過多K_)，且可以藉由縮放器 420加以多工以使信號解析度與螢幕解析度相匹配（例如降 低）13為’通常’進入影像通常具有比led螢幕(例如 25&144個像素）稍高的解析度（例如72〇><576個像素）。因此 在縮放ft 42G中使影像解析度降低至與LED螢幕相匹配之 解析度。 應在整個進入影像可用之某一位置處進行影像分析。此 消除信號路徑之隨後級，在該等隨後級中螢幕内之内部資 料分佈實體分離影像資料以僅將相關資料引導至螢幕之各 部分。縮放器420之後最好進行分析，因為縮放器42〇之後 影像資料與LED螢幕間存在一對一像素關係。場可程式化 閘極陣列（FPGA)430與場儲存器或記憶體435(具有相關聯 微控制ι§)之併入使得縮放器420之後及在螢幕44〇内分配 尨號之珂可以執行包括影像分析之許多功能。FPga 43〇之 輸出係提供給一塊處理器以便處理信號及將信號提供給線 130831.doc 200912886 驅動器455用於驅動螢幕440。縮放器420之後需要藉由 FPGA 430實行内容分析。 如圖4所示，螢幕440包括一用以將相關資料引導至榮幕 440之相關部分的内部資料分配器460。一伽瑪校正器465 提供伽瑪校正。亦藉由色彩校正器470提供色彩校正以便 將信號提供給驅動器475用於驅動LED 480及在營幕440上 顯示内容或影像。 作為一解說性範例，圖4所示具體實施例中進行以下假 設：在縮放器420之輸出處’影像信號作為一 8位元 RGB(紅-綠-藍）光度資料（例如，3x8位元流_一個用於”R，，， 一個用於"G"而一個用於"B")存在；且用於紅、綠及藍led 之LED電流係相等的。 以下說明景；^像分析期間用以計算增益因數之事件序列， β亥增益因數隨後將應用於信號路徑中，以控制螢幕輸出位 準以獲得目標功率降低因數（Fact〇rTAR(iET reduc): 1.對8位元RGB光度資料應用逆伽瑪校正且在該程序 中，將資料縮放為3x9位元值。 際顯示於LED螢幕上之前發生^ 的°所有影傻信號且古_ i Λ. 逆伽瑪校正係為了仿真實The target reduction factor for the maximum screen power caused by the DPC can be determined by one or more factors. The goal can be to reduce the total power consumption of the screen so that, for example, the screen can be operated from a typical single phase outlet instead of a 3-phase supply. A beneficial incidental result may be to reduce the number of PSUs required to drive the screen, with associated cost and weight savings. Alternatively, the target may be to reduce the power consumption so as to be within a certain number of PSUs, or within a capacity range of a different specification PSU, when the luminosity of any region of Q exceeds a predetermined DPC limit value is displayed. In the case of the brightness of the content, the effect of the DPC on the normal viewer is usually invisible. The test image contains a small area free of detail; this may be lower than the DPC limit and the screen output will be at the maximum level. If the image contains an increased detail area, then the output level will gradually decrease, and vice versa. The heavier the reduction factor, the earlier the screen output level will decrease and the lower it will fall. Use (iv) according to the system and method to demonstrate a power reduction factor. As shown in system 100 of FIG. 1, a display device (e.g., led screen 110) includes a processing thief 120 configured to implement a Dpc and control the screen 110 to display an image and the brightness in either zone is greater than one stored in light. The screen brightness is changed when the limit value in the memory 130 of the processing (10) is processed. As is well known, the memory 130 can also store other data and application software, including software instructions executed by the processor to implement, for example, DPC. The processor 120 can be configured to divide the active display area of the camp' into zones, such as eight zones of the same size and shape (1). Each zone can be powered up by its own - or multiple PSUs, where the figure is used to display the coffee bar as a dashed box 140. - the size of the zone (measured in pixels) or the number of zones can be determined by a number of factors, such as the maximum unit area power consumption of the full rated light output; the reduction in the maximum screen power expected due to the incorporation of dpc is reduced by t', eg 0.6 Factor; and the power rating of the PSU for each zone. The full rated output rate can be consumed according to the manufacturer's specifications or by measuring the area. The processor 120 is configured to analyze the incoming image in real time. For the pixel content of each corresponding area, the total image of the brightest area is determined: the mouth, and, and the memory 13. Stored in - the predetermined threshold is crossed. The content analysis is well known, for example, as described in U.S. Patent No. 1, 301, 831 to U.S. Patent No. 1, 312, 614, 594, issued to the name of U.S. Pat. . If the brightest region has determined the maximum luminosity value, or the luminosity value of any of the regions exceeds the threshold value, then the processor 12 is configured to implement (4) and reduce the round or brightness of the entire camp. Level 1 minimizes the incidence of output level reduction, and the shape of the area is required to represent the total image of the &#;normal" fragment in the best possible way. The shape of the zone has a significant effect on Dpc performance. For example, in FIG. 1, the screen i 1〇 is divided into eight zones numbered 丄 to 8; wherein each zone can be, for example, one half height & of the screen 110, or have a different height (ie, have a portion of the screen height) ). When analyzing the regions in Figure 1, it will be appreciated that zones 2 and 3 each have a higher total pixel value than any other zone due to the bright regions of zones 2 and 3. A high pixel value in zone 2 or 3 may well cause the gate output level to decrease (if above a threshold). In comparison with Fig. 1, Fig. 2 shows a screen 21 having eight zones in which the same image as that of Fig. i is displayed. The difference is that the regions of the screen 21 are full (action) screen south. The zone analysis (e.g., by processor execution) shows that zones 4 and 5 of Figure 2 have the highest pixel values. However, each of these zones 4 and 5 is dedicated to a versatile area (for example, the actual view of the sun in the landscape). The percentage of each of the zones 2 and 3 shown dedicated to the bright zone is much lower. In the case of the screen 21 of Figure 2, the total pixel luminosity of each of these zones 4 and 5 may be below the threshold and therefore does not cause a reduction in the screen output level. In the example shown in Figures 1 to 2, it can be seen that the eight full height regions of Figure 2 are 13083], and d〇c -13 - 200912886 provides better results than the eight half height (or partial height) regions of Figure i. Because the total content or the brightness of the screen is not affected or reduced, the screen output level is reduced to a minimum. This is because the top portion of the image in this example contains content that is brighter than the bottom portion and that the regions are full height, resulting in an average of the brightness of the region that is less than the threshold. Of course, it is not always the case that the top portion of the image is brighter than the bottom portion, but 'it does happen often. The system can have a full height which minimizes the DPC and thus maintains image brightness over the widest image range. Figure 3 shows a particular embodiment of a screen (4) having 25 仏 144 pixels and divided into 8 full height regions (32 x 114 pixels per zone). The above | zone may have its own one or more power supply units (sharp). The PSU can be in the range of voltage and power. In a no-frills tradition, each PSU must be powerful enough to drive its screen area when displaying a pure white image (ie maximum brightness/power). The incorporation of Dpc makes it possible to use less power (and therefore less expensive) clipping, or alternatively, each existing PSU can drive a larger area of the screen. Calculate the fpsu data for each zone and take into account the power reduction achieved by DPC to obtain a lower power rating PSU. Therefore, if the DPC factor is (for example) 〇6, the maximum power required to drive the zone is shown as a pure white (PZ〇NE WITH NO DPC) x 〇, 6 watts of which PZONE WITH NO DPC is without DPC operation. The power required for the image in this area. The analysis includes the image signal 13083l.doc •14- 200912886 of the content (such as image) to be displayed on the screen to determine the brightness value of each pixel to predict that the screen will be displayed on the screen without Dpc. Did not take the current. If the total current (and thus the power) of all the pixels in the zone exceeds the threshold, the output level of the positive screen is correspondingly reduced to not exceed the rated power rating of the screen or PSU. In order to achieve a sufficiently accurate prediction of the pixel performance of the screen, it is necessary to select the location of the content analysis in the 虎5 tiger path in an appropriate manner. 4 shows that the block diagram is not based on the signal path of a led screen in the specific embodiment, wherein a composite video signal 4〇5 is transferred by the video decoder 4 for decoding. The decoded signal passes through multiple K_) and can be multiplexed by the scaler 420 to match the signal resolution to the screen resolution (eg, lower) 13 for a 'normal' incoming image typically having a better than a led screen (eg, 25&144 A pixel with a slightly higher resolution (for example, 72 〇 >< 576 pixels). Therefore, in scaling ft 42G, the image resolution is reduced to match the resolution of the LED screen. Image analysis should be performed at a location where the entire image is available. This eliminates subsequent stages of the signal path in which the internal data distribution entities within the screen separate the image data to direct only relevant data to portions of the screen. Preferably, the scaler 420 is analyzed after the scaler 42 has a one-to-one pixel relationship between the image material and the LED screen. The incorporation of field programmable gate array (FPGA) 430 and field storage or memory 435 (with associated micro-control) enables the inclusion of apostrophes after the scaler 420 and within the screen 44" can be performed including Many features of image analysis. The output of the FPga 43 is provided to a processor for processing signals and providing signals to the line 130831.doc 200912886 The driver 455 is used to drive the screen 440. The scaler 420 then needs to perform content analysis by the FPGA 430. As shown in FIG. 4, screen 440 includes an internal data distributor 460 for directing relevant material to the relevant portion of honor screen 440. A gamma corrector 465 provides gamma correction. Color correction is also provided by color corrector 470 to provide signals to driver 475 for driving LED 480 and for displaying content or images on theater screen 440. As an illustrative example, the specific embodiment of FIG. 4 assumes that the image signal is at the output of the scaler 420 as an 8-bit RGB (red-green-blue) luminosity data (eg, a 3x8 bit stream). _ one for "R,,, one for "G" and one for "B") exists; and the LED currents for red, green, and blue led are equal. During the event sequence used to calculate the gain factor, the β-hin gain factor is then applied to the signal path to control the screen output level to achieve the target power reduction factor (Fact〇rTAR(iET reduc): 1. For 8-bit RGB The luminosity data is inverse gamma corrected and in this program, the data is scaled to a 3x9 bit value. It is displayed on the LED screen before the ^ all the shadow signals and the ancient _ i Λ. The inverse gamma correction system is for the simulation real
2.對9位元RGB光度值一 值一起求和以針對各像素產生〇至 130831.doc 200912886 1023之光度值（現在為10位元）。 3. 對各區中之10位元像素光度值求和。 4. 進入影像場結束時，將該等區和作比較以找到具有最 大光度和（ZoneSumMEASURED)之區。應注意，初始設置期 間，應校準系統以便確認每區最大可能光度和 (ZoneSumMAX P0SS)。此係藉由提供純白背景作為影像來源 及如上測量來實現。 5. 根據以下公式計算欲應用於LED驅動器之增益因數：2. Sum the 9-bit RGB luminosity values together to produce a luminosity value (now 10 bits) for each pixel to 130831.doc 200912886 1023. 3. Summing the 10-bit pixel luminosity values in each zone. 4. At the end of the image field, compare the zones and find the zone with the largest luminosity and (ZoneSumMEASURED). It should be noted that during initial setup, the system should be calibrated to confirm the maximum possible luminosity and (ZoneSumMAX P0SS) for each zone. This is achieved by providing a pure white background as the source of the image and the above measurements. 5. Calculate the gain factor to be applied to the LED driver according to the following formula:
FactorGAiN=ZoneSumMAx p〇ssxFactorTARGET REDuc/ZoneSimiMEASURED 例如： 若：ZoneSumMAX poss = 800 及：ZoneSumMEAsuRED = 600 及：FaCt〇rTARGETREDUC = 0-6 貝1J FactorGAiN=800x0.6/600 = 0.8 此意指LED驅動器之增益必須乘以0.8(即降低）以提供0.6 之目標功率降低因數。應注意，顯示暗影像時不需要增加 功率，因此也應應用一防止FactorGAIN具有大於1之值的公 式。 該增益因數應應用於信號路徑中之適合級處以在適合時 間提供所需效應。針對一進入影像場測量像素值及計算增 益因數之程序實際上花費一場的一持續時間來完成。因 此，所計算之增益因數實際上與剛剛過去之場有關，即其 落後一場。為了正確應用該增益因數，可以在分析5 1 0與 應用520(如圖5之方塊圖500所示）之間使影像信號延遲一 130831.doc -17- 200912886 場，或處理影像信號所花費之時間量。因此，由於自 FPGA 43 0至LED 480之信號之場延遲53〇，來自FpGA 43〇 之已分析信號對應於藉由LED 480而顯示於螢幕440上之信 號。 信號路徑中應用增益因數之理想點係在圖4所示色彩校 正級470處。在此處正常執行影像11(33位準之各種修改以 提供（例如）正確白色平衡及色彩一致性。亦存在益處：在 此點，資料處理中之固有時間延遲（由於圖5所示Dpc分析 510)可能等同於一場持續時間，且因此為圖5之延遲53〇恰 當納入考量之中。此導致將增益因數應用於基於其的正確 資料場（即恰當時序），而非來自隨後場之資料上，從而消 除瞬變PSU過載。 在色彩校正級470處應用增益因數可能存在實際困難， 其係由此級通常橫跨螢幕整個區域實體展開之事實造成； 因此同時將其應用於所有螢幕區域可能證明有困難。因 此，一雖然較不有效但更容易的用以應用增益因數之級係 相同FPGA 430中之資料分析級之下游，在FpGA 43〇中執 行内容分析。此具有提供資料流之很容易存取的益處，但 具有將增益因數應用於在其應用之資料場後面的資料場之 缺點。此理論缺點實際上係觀看者幾乎不可察覺的。可能 理論上造成的瞬變PSU過載具有短（例如一場）持續時間且 通常很容易藉由PSU來處理而沒有問題。 已使用表1所示以下參數展示DPC之效應，其中一具有 像素解析度256x144個像素之LED螢幕已與Dpc及表丨（其顯 130831.doc •18- 200912886 示具有及無DPC之值的比較）所述以下測量適配。 參數 無DPC 具有DPC 最大功率消耗： 3.8 kW 2.4 kW 功率降低因數： 0.63 幹線供應之類型： 3 相 400 V 16 A 單相 230 V 13 A 320WPSU之數量： 24 9 冷卻風扇之數量： 8 4 最大光輸出-區區域之50%上的 白背景： 2000 cd/m2 2000 cd/m2 最大光輸出-區區域之76%上的 白背景： 2000 cd/m2 1810 cd/m2 最大光輸出-區區域之100%上 的白背景 2000 cd/m2 1350 cd/m2 表1 圖6至8顯示X軸上之螢幕上所照明之像素列之數量（每列 256個像素）對y軸上之以安培計之幹線供應電流AC的曲線 圖，其中中間垂直虛線係DPC限定值，而右邊虛線係照明 所有列（即驅動整個螢幕）之線。特定言之，圖6顯示以下狀 況下已測量螢幕幹線電流對已照明區區域之尺寸的曲線 600(其顯示驅動所有區時DPC之效應）：純白測試圖案；驅 動所有區；螢幕尺寸為256x 144個像素（hxv);採用A.C.電 流轉換器測量幹線電流；及幹線電壓235 V A.C.。 圖7顯示以下狀況下已測量PSU輸出電流對已照明區區 域之尺寸的曲線700(其顯示一區為受驅動區時DPC之效 應）：純白測試圖案；僅驅動一區；區尺寸為32X丨44個像 130831.doc -19- 200912886 素（hxv)，及採用D c電流轉換器測量電流。 圖8顯示以下狀況下螢幕之一小區域之已測量光輸出對 已照明區區域之尺寸的曲線8〇〇(其顯示驅動—區時Dpc之 效應）.純白測試圖案；驅動一區；區尺寸為144個像 素（h);及採用Minolta⑴⑽色度計在5米處測量光輸 出。應注意，每像素光輸出係取決於led溫度。 虛擬區分析係DPC分區之替代實施方案。涉及固定位置 之區的上述方法很好地適用於大多數影像材料。不過，存 在於螢幕周圍緩慢追蹤之亮圖形影像可能造成變得為 螢幕上所顯示之内容或影像之觀看者可察覺的實例。 圖9顯示一系統900,其具有—分割成8個區之螢幕91()， 大型、亮圖形物件（例如内容影像部分或圖形物件）92〇橫跨 螢幕910從位置a追蹤或移動至位置B。如圖2所示，將螢 幕910分割成八個相等的全高度區丨至8。不過，大型、亮 圖形物件920橫跨螢幕910緩慢追蹤或移動之情況下，則可 能存在物件920幾乎填充-區（例如區7)之時候（例如在位置 A處）’可能造成DPC降低總影像亮度’例如區7之總像素 壳度大於DPC臨界值的時候。可能存在（例如）物件92〇位於 位置B處、物件920橫跨兩區（例如區4與5)展開的其他時 候，其可能不會造成DPC降低總亮度，因為任—區之總像 素亮度小於DPC臨界值。 圖形物件920移動時，DPC之效應係使整個螢幕之亮度 上下緩慢脈動。此效應可以藉由採用虛擬區分析來消除。 如先前所述，虛擬區分析涉及分析每一個32χΐ44個像素之 130831.doc -20· 200912886 區1至8及確認具有最大光度和之區。不過，與僅使用直接 連結至其自己之PSU的八個區不同，虛擬區分析會查看可 以存在於整個螢幕内的每一個可能的32χΐ 44(hxv)區。 圖1 0顯示一經組態用以使用虛擬區分析之概念的系統 1000。第一分析查看螢幕1010之最左邊32x144個像素之區 域（用作虛擬區1之區段1020)並計算此虛擬區i之總光度 和，其與固定區之總光度和相同。第二分析將虛擬區向右 移動一像素（用作虛擬區2之區段1 030)且再次計算此虛擬區 之總光度和。第三分析將虛擬區進一步向右移動一像素等 等。該程序重複直到到達螢幕之右側，如為虛擬區225的 螢幕1010之區段1〇4〇所示。在其中螢幕91〇係144個像素乘 256個像素且具有32x 144個像素之區域的各區係漸進式移 動一像素之此範例中，將存在總共225個虛擬區。將225個 虛擬區之總像素光度和相互作比較以決定具有最大和之 區，且以與先前方式相同的方式使用最大和，以計算增益 因數並應用DPC。 與固疋區位置相比，此虛擬區分析之方法具有移除我們 的範例中所說明的不合需要脈動效應之優點，但具有產生 較低平均螢幕亮度之缺點。 熟習此項技術者鑒於本文之說明應認識到’也可提供各 種修改。本方法之操作動作特別適於藉由電腦軟體程式來 執行。應用資料及其他資料係為控制器或處理器所接收用 於對其加以組態以實行㈣本系統及方法之操作動作。此 類軟體、應用資料以及其他資料當然可以具體化於電腦可 13083I.doc -21 · 200912886 讀取媒體（例如積體晶片 體或耦合至處理〇 、置或記憶體（例如該記憶 盗之其他記憶體）中，。 該電腦可讀取媒體、該記侉體 可為長期、短期、或長與短期記及❹何其他記憶體 對處理器/控制Λ …體之組合。此等記憶體 作動作、及功能。該等記詩η 4所揭不之方法、操 理器（其+可以提〜4 & m局部式且該處 τ』以扣供額外處理器）可 等記憶體可實施為電性、磁：m。該 他類型之儲存裝置之任何组合。先學°己隐體，或此等或其 行各與:等記憶體可為任何類型。該處理器能夠實 ;t=:r執行記憶體中所儲存之指令。該處理器 、特疋或-般使用之積體電路。此外，該處理器可 =二依據本系統實行的專用處理器或可為一通用處理 該處理能中僅—功能操作用於依據本μ實行。 彳利用&式部分、多個程式區段操作，或可 為一利用專用或多用途積體電路的硬體裝置。 :後’上述内容係意欲僅解說本系統且不應理解為將所 附^青專利範圍限制為任何特定具體實施例或具體實施例 群-且®此’雖然已參考其特定範例性具體實施例特別 細地說明本系統，但也應明白’熟習此項技術者可以設:十 許^修改與替代具體實施例而不背離以下中請專利範^中 所提出的本系統之更廣泛及預期精神與範疇。因此應以解 說方式看待說明書與圖式且說明書與圖式並非意欲限制戶斤 附申凊專利範圍之範嘴。 130831.doc -22- 200912886 解釋所附φ —主击t, 0月專利砣圍中，應明白： a)字詞”包合,, 之元件或動作:子在與給定申請專利範圍中所列出 同的其他元件或動作； 元件)^件則面之字詞” 或”—個”不排除存在複數個此類 月專利乾圍t之任何參考符號不限制其範脅； 施^件”可以採用相同或不同項目或硬體或軟體實 施結構或功能來表示； 離件中之任何元件可包含硬體部分(例如，包括 =正5式電子電路）、軟體部分（例如，電腦程式化）、 及其任何組合； 〇硬體部分可以包含類比與數位部分之一或兩個； 示裝置或其部分之任何者可以組合在一起或分離 成八他部分，另作明確規定除外；及 h)並非意欲需要特定動作或步驟序列，另作明確規定除 外。 ’、 【圖式簡單說明】 從以上說明、所附申請專利範圍、及附圖中將更好地瞭 解本發明之設備、系統及方法之此等及其他特徵、態樣，、、 及優點，其中： 圖1至3顯示依據解說性具體實施例之分割成8個區之 幕； 赏 圖4顯示方塊圖，其顯示依據一解說性具體實施例的一 LED螢幕之信號路徑； 130831.doc •23- 200912886 圖5顯示方塊圖’其包括依據另一解說性具體實施例的 一延遲元件； 圖6至8顯示展示依據另一解說性具體實施例之dpc效應 的各種曲線圖； 圖9顯示依據另一解說性具體實施例之具有大型、亮圖 形物件橫跨該螢幕移動之分區螢幕；及 圖1 〇顯示依據另一解說性具體實施例之虛擬區。 【主要元件符號說明】 100 顯示系統 110 螢幕 120 處理器 130 記憶體 140 電源供應單元 210 螢幕 310 螢幕 405 複合視訊信號 410 視訊解碼器 420 縮放器 430 場可程式化閘極陣 435 場儲存器/記憶體 440 螢幕 455 460 465 線驅動器 内部資料分配器 伽瑪校正器 130831.doc -24· 200912886 470 色彩校正器 475 驅動器 480 發光二極體 510 分析 520 應用 530 場延遲 900 糸統 910 螢幕 920 圖形物件 1000 系統 1010 螢幕 1020 、 1030 ' 1040 區段 130831.doc -25 -FactorGAiN=ZoneSumMAx p〇ssxFactorTARGET REDuc/ZoneSimiMEASURED For example: If: ZoneSumMAX poss = 800 and: ZoneSumMEAsuRED = 600 and: FaCt〇rTARGETREDUC = 0-6 Shell 1J FactorGAiN=800x0.6/600 = 0.8 This means that the gain of the LED driver must Multiply by 0.8 (ie, decrease) to provide a target power reduction factor of 0.6. It should be noted that there is no need to increase the power when displaying dark images, so a formula that prevents FactorGAIN from having a value greater than one should also be applied. This gain factor should be applied to the appropriate level in the signal path to provide the desired effect at the appropriate time. The procedure for measuring pixel values and calculating the gain factor for entering the image field actually takes a lifetime to complete. Therefore, the calculated gain factor is actually related to the field that has just passed, that is, it is behind. In order to properly apply the gain factor, it is possible to delay the image signal by 130830.doc -17-200912886 field between analysis 5 1 0 and application 520 (shown in block diagram 500 of FIG. 5), or to process the image signal. The amount of time. Therefore, since the field delay of the signal from FPGA 43 0 to LED 480 is 53 〇, the analyzed signal from FpGA 43 对应 corresponds to the signal displayed on screen 440 by LED 480. The ideal point for applying the gain factor in the signal path is at the color correction stage 470 shown in FIG. Image 11 (33-level corrections) is normally performed here to provide, for example, correct white balance and color consistency. There are also benefits: at this point, the inherent time delay in data processing (due to the Dpc analysis shown in Figure 5) 510) may be equivalent to a duration, and therefore is properly taken into account for the delay 53 of Figure 5. This results in applying the gain factor to the correct data field based on it (ie the appropriate timing) rather than from the subsequent field. Up, thereby eliminating transient PSU overload. There may be practical difficulties in applying the gain factor at color correction stage 470, which is caused by the fact that this level is typically spread across the entire area of the screen; therefore, it may be applied to all screen areas at the same time. It proves to be difficult. Therefore, although it is less effective but easier to apply the gain factor level, it is the downstream of the data analysis level in the same FPGA 430, and the content analysis is performed in FpGA 43〇. This has a very good data flow. The benefits of easy access, but with the disadvantage of applying a gain factor to the data field behind the data field in which it is applied. The viewers are almost imperceptible. The transient PSU overload that may theoretically be caused has a short (eg one field) duration and is usually easily handled by the PSU without problems. The following parameters have been used to demonstrate DPC using the following parameters: The effect of one of the LED screens with a pixel resolution of 256 x 144 pixels has been adapted to the following measurements described in Dpc and Tables (which compares the values with and without DPC shown in 130831.doc • 18-200912886). DPC has DPC maximum power consumption: 3.8 kW 2.4 kW Power reduction factor: 0.63 Type of mains supply: 3-phase 400 V 16 A Single-phase 230 V 13 A Number of 320 WPSUs: 24 9 Number of cooling fans: 8 4 Maximum light output - White background on 50% of the area: 2000 cd/m2 2000 cd/m2 Maximum light output - 76% of the area on the white background: 2000 cd/m2 1810 cd/m2 Maximum light output - 100% of the area White background 2000 cd/m2 1350 cd/m2 Table 1 Figures 6 to 8 show the number of pixel columns illuminated on the screen on the X-axis (256 pixels per column) versus the mains supply current on the y-axis. AC curve, its The middle vertical dashed line is the DPC limit value, and the right dashed line is the line that illuminates all the columns (ie, driving the entire screen). In particular, Figure 6 shows the curve 600 of the measured screen mains current versus the size of the illuminated area under the following conditions. (It shows the effect of DPC when driving all zones): Pure white test pattern; drives all zones; screen size is 256x 144 pixels (hxv); AC current converter measures mains current; and mains voltage 235 V AC. Figure 7 shows a plot 700 of the measured PSU output current versus the size of the illuminated zone under the following conditions (which shows the effect of DPC when a zone is driven): a pure white test pattern; only one zone is driven; the zone size is 32X丨Forty-six are like 130831.doc -19-200912886 (hxv), and the current is measured using a DC current converter. Figure 8 shows a curve 8 of the measured light output of a small area of the screen to the size of the illuminated area under the following conditions (the effect of Dpc when displaying the drive-area). Pure white test pattern; drive one area; area size It is 144 pixels (h); and the light output is measured at 5 meters using a Minolta (1) (10) colorimeter. It should be noted that the light output per pixel is dependent on the LED temperature. Virtual Area Analysis is an alternative implementation of the DPC partition. The above method involving areas of fixed position is well suited for most imaging materials. However, bright graphic images that are slowly tracked around the screen may cause instances that become noticeable to viewers of the content or images displayed on the screen. Figure 9 shows a system 900 having a screen 91() split into 8 zones, a large, bright graphical object (e.g., a content image portion or a graphical object) 92 traversing or moving from position a to position B across screen 910. . As shown in Figure 2, the screen 910 is divided into eight equal full height zones 88. However, in the case where the large, bright graphic object 920 is slowly tracked or moved across the screen 910, there may be a time when the object 920 is almost filled-area (eg, zone 7) (eg, at location A), which may cause the DPC to lower the total image. Luminance 'e.g., when the total pixel shell of zone 7 is greater than the DPC threshold. There may be other times when, for example, the object 92 is located at position B and the object 920 is spread across two regions (eg, regions 4 and 5), which may not cause the DPC to reduce the overall brightness because the total pixel brightness of the any region is less than DPC threshold. When the graphic object 920 moves, the effect of the DPC is to cause the brightness of the entire screen to pulsate up and down slowly. This effect can be eliminated by using virtual zone analysis. As previously described, virtual zone analysis involves analyzing each of the 32 χΐ 44 pixels of 130831.doc -20· 200912886 Zones 1 through 8 and confirming the zone with the greatest luminosity. However, unlike the eight zones that use only the PSUs that are directly linked to them, the virtual zone analysis looks at every possible 32χΐ 44 (hxv) zone that can exist throughout the screen. Figure 10 shows a system 1000 that is configured to use the concept of virtual zone analysis. The first analysis looks at the area of the leftmost 32x144 pixels of screen 1010 (used as section 1020 of virtual area 1) and calculates the total luminosity sum of this virtual area i, which is the same as the total luminosity of the fixed area. The second analysis moves the virtual area one pixel to the right (serving as sector 1 030 of virtual area 2) and again calculates the total luminosity sum of this virtual area. The third analysis moves the virtual area further to the right by one pixel or the like. The program repeats until it reaches the right side of the screen, as shown in section 1〇4 of screen 1010 of virtual area 225. In this example where the screens of the screen 91 are 144 pixels by 256 pixels and the regions having 32x 144 pixels progressively move by one pixel, there will be a total of 225 virtual regions. The total pixel luminosity of the 225 virtual zones is compared to each other to determine the zone having the largest sum, and the maximum sum is used in the same manner as the previous way to calculate the gain factor and apply DPC. This method of virtual area analysis has the advantage of removing the undesirable pulsation effects described in our example, but has the disadvantage of producing a lower average screen brightness than the solid area location. Those skilled in the art will recognize, in view of the description herein, that various modifications are also possible. The operation of the method is particularly suitable for execution by a computer software program. Application data and other data are received by the controller or processor for configuration to perform (4) operational actions of the system and method. Such software, application materials, and other materials may of course be embodied in a computer that can read media (eg, an integrated wafer body or be coupled to a processing device, memory, or other memory (eg, other memories of the memory thief). In the computer, the computer can read the medium, and the recording body can be a combination of long-term, short-term, or long-term and short-term memory and any other memory to the processor/control body. And functions. These methods are not revealed in the verse 4, the processor (the + can be raised ~ 4 & m partial and the τ is used for deduction of additional processors) can be implemented as memory Electrical, magnetic: m. Any combination of other types of storage devices. Learn from the hidden body, or such or its line and other memory can be of any type. The processor can be real; t =: r executes the instructions stored in the memory. The processor, the special or the integrated circuit used in addition. In addition, the processor can = two dedicated processors implemented according to the system or can be a general processing of the processing energy Only the function operation is used to implement according to this μ. Operate with a & part, multiple program sections, or can be a hardware device that utilizes a dedicated or multi-purpose integrated circuit. : 'The above content is intended to explain only the system and should not be construed as attached ^ The scope of the patents is limited to any particular embodiment or group of specific embodiments - and this has been described in detail with reference to particular exemplary embodiments thereof, but it should also be understood that the skilled person can: Modifications and substitutions of specific embodiments without departing from the broader and intended spirit and scope of the system as set forth in the following patents. Therefore, the description and drawings should be considered in an illustrative manner and the description and drawings are not intended Restricted households are attached to the scope of the patent scope. 130831.doc -22- 200912886 Explain the attached φ - main hit t, in the patent range of 0, should understand: a) the word "inclusion," the component or Action: The other elements or actions listed in the same scope as the patent application; the word "face" or "-" does not exclude any of the following patents. Reference symbols do not limit them The "feature" may be represented by the same or different items or hardware or software implementation structure or function; any component in the separation may include a hardware part (for example, including = positive 5 type electronic circuit), a software part ( For example, computer stylized), and any combination thereof; the hardware portion may contain one or both of analog and digital parts; any of the devices or portions thereof may be combined or separated into eight parts, and otherwise Except as provided; and h) is not intended to require a specific action or sequence of steps, unless otherwise specified. ', [Simple Description of the Drawings] The present invention will be better understood from the above description, the appended claims, and the accompanying drawings. These and other features, aspects, and advantages of the device, system, and method, wherein: Figures 1 through 3 show a screen divided into eight regions in accordance with an illustrative embodiment; It shows a signal path of an LED screen according to an illustrative embodiment; 130831.doc • 23- 200912886 Figure 5 shows a block diagram 'which includes another illustrative embodiment A delay element; Figures 6 through 8 show various graphs showing the dpc effect in accordance with another illustrative embodiment; Figure 9 shows a large, bright graphical object moving across the screen in accordance with another illustrative embodiment. A partitioned screen; and FIG. 1A shows a virtual area in accordance with another illustrative embodiment. [Main component symbol description] 100 Display system 110 Screen 120 Processor 130 Memory 140 Power supply unit 210 Screen 310 Screen 405 Composite video signal 410 Video decoder 420 Scaler 430 Field programmable gate array 435 Field memory/memory Body 440 Screen 455 460 465 Line Driver Internal Data Splitter Gamma Corrector 130831.doc -24· 200912886 470 Color Corrector 475 Driver 480 Light Emitting Diode 510 Analysis 520 Application 530 Field Delay 900 System 910 Screen 920 Graphic Object 1000 System 1010 Screen 1020, 1030 ' 1040 Section 130831.doc -25 -