200945287 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種影像校正方法，特別是關於一種三 維影像顯示的校正方法。 【先前技術】 隨著資訊時代的來臨，人們與資訊設備的接觸機率愈 趨頻繁，其中具有傳播資訊的顯示裝置已成為現代人不可 ©或缺的電子產品之一。 一般而言，習知的顯示裝置係接收一類比影像訊號， 並將影像顯示於一顯示面板上。顯示面板所顯示的影像是 由複數晝素所構成的，類比影像訊號中的影像資料將會被 寫入相對應的晝素中。然而，由於顯示裝置可調整其螢幕 解析度，因此顯示裝置中皆會建置一影像自動校正的功 能，以因應在不同的螢幕解析度下，校正影像於顯示面板 中的位置。 以下，將說明習知顯示裝置之影像自動校正的方式。 當顯示裝置接收類比影像訊號，且在類比影像訊號最先出 現一高電壓準位時，顯示裝置開始擷取類比影像訊號中的 影像資料。接著，顯示裝置依據類比影像訊號中的影像資 料及一螢幕解析度校正影像於顯示面板中的位置。 假設類比影像訊號中起始的影像資料為一低電壓準 位，其係用以使顯示面板上顯示黑色影像。若顯示裝置擷 取影像訊號中的影像資料是由類比影像訊號輸出高電壓 200945287 準位為起始位置，則會造成一開始代表黑色影像的低電壓 準位之影像資料被視為雜訊或判斷錯誤，而使得影像資料 擷取不完整，進而造成不同程度的影像失真。 此外，為了使得顯示裝置的顯示晝面有立體感，部分 的顯示裝置具有二個顯示面板，二個顯示面板係分別接收 一數位影像訊號以及一類比影像訊號。假設顯示面板於接 收類比影像訊號時發生影像資料擷取錯誤，則會使得二個 顯不面板上的影像貧料產生不匹配（match )的情況。此時’ ❹使用者所看到的顯示晝面會有例如是黑帶（black band)的 錯誤影像而影響整體晝面的立體感。 因此，如何提供一種影像校正方法，以使具有兩個顯 示面板的三維顯示裝置中的數位影像與類比影像匹配，實 為現今的重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種使得數位 影像與類比影像匹配之影像校正方法。 為達上述目的，本發明提供一種影像校正方法係調整 一影像於一顯示裝置之一顯示區域中相對的位置。其中， 顯示裝置具有一第一顯示面板及一第二顯示面板，第一顯 示面板與第二顯示面板相對而設。第一顯示面板接收一數 位影像訊號，第二顯示面板楱收一類比影像訊號。影像校 正方法包含下列步驟：依據數位影像訊號得到一數位起始 訊號及一數位結束訊號；依據數位起始訊號及數位結束訊 200945287 號擷取類比影像訊號中之至少一部分的類比影像；以及將 類比影像調整至顯示區域中相對的位置。 為達上述目的，本發明提供一種顯示裝置，其係包含 一第一顯示面板、一第二顯示面板以及一訊號處理模組。 第二顯示面板係與第一顯示面板相對而設，第一顯示面板 係接收一數位影像訊號。訊號處理模組根據數位影像訊號 得到一數位起始訊號與一數位結束訊號，並參考數位起始 訊號與數位結束訊號以擷取一類比影像訊號之至少一部 © 分的類比影像並調整類比影像顯示的相對位置，輸出調整 後之類比影像訊號至第二顯示面板。 承上所述，依據本發明之影像校正方法，其係由接收 類比影像訊號的第二顯示面板依據數位起始訊號及數位 結束訊號以擷取類比影像訊號。由於數位起始訊號代表數 位影像訊號中的數位影像資料的起始時間或起始位置，而 數位結束訊號代表數位影像訊號中的數位影像資料的結 束時間或結束位置，因此，可以避免對於類比影像訊號判 〇 讀錯誤而造成與數位影像訊號不匹配的問題。 【實施方式】 以下將參照相關圖式，說明依據本發明較佳實施例之 影像校正方法。 本發明較佳實施例之影像校正方法係可應用於一顯 示裝置1(如圖1所示），用以調整一影像於一顯示區域中 相對的位置。 200945287 請參照圖1所示，顯示裝置1包含一第一顯示面板11 及一第二顯示面板12，其中，第一顯示面板11與第二顯 示面板12相對而設。於本實施例中，顯示裝置1係可為 一三維顯示裝置。 顯示裝置1更包含一控制板Π，其係具有一數位訊號 處理單元131、一類比訊號處理單元132、一顯示介面單 元133以及一電源供應單元134。顯示介面單元133、數 位訊號處理單元131以及類比訊號處理單元132相互電性 ❹連接。電源供應單元134係分別與數位訊號處理單元13卜 類比訊號處理單元132以及顯示介面單元133電性連接， 以提供一電源。 數位訊號處理單元131係與一第一接收單元14電性 連接，類比訊號處理單元132係與一第二接收單元15電 性連接。於本實施例中，第一接收單元14係具有一數位 訊號接收端子141，第二接收單元15係具有一數位訊號接 收端子151以及一類比訊號接收端子152。於本實施例中， ◎ 數位訊號處理單元131、類比訊號處理單元132、第一接 收單元14以及第二接收單元15係可整合為一訊號處理模 組。 請同時參照圖2所示，本發明較佳實施例之影像校正 方法係包含步驟S11至步驟S17。 步驟S11係判斷顯示裝置1之一顯示模式。於實施 上，顯示裝置1的顯示模式係可為一二維顯示模式或一三 維顯示模式。當顯示裝置1之顯示模式為二維顯示模式 200945287 不 ；!=行步驟S14。當顯示裝置1之顯示模式為三維顯 挨式時’則進行步驟S12。 在步驟S12中，數位訊號接收端子141接收一數位影 像訊说’並將數位影像訊號傳送至數位訊號處理單元 ⑶。數位訊號處理單力131則根據數位影像訊號而得到 士圖3所7F之一日$脈訊號CK、一數位起始訊號D】及—數 位結束訊號D2。 力本實施例中，數位起始訊號D丨係代表數位影像訊 唬中之一數位影像的一起始時間訊號及/或一起始位置訊200945287 IX. Description of the Invention: [Technical Field] The present invention relates to an image correction method, and more particularly to a method for correcting a three-dimensional image display. [Prior Art] With the advent of the information age, the contact probability of people with information devices has become more frequent. Among them, display devices with information dissemination have become one of the electronic products that modern people cannot or cannot lack. In general, conventional display devices receive an analog image signal and display the image on a display panel. The image displayed on the display panel is composed of a plurality of pixels, and the image data in the analog image signal will be written into the corresponding pixels. However, since the display device can adjust its screen resolution, an automatic image correction function is built in the display device to correct the position of the image in the display panel at different screen resolutions. Hereinafter, a method of automatically correcting the image of the conventional display device will be described. When the display device receives the analog video signal and a high voltage level first appears in the analog video signal, the display device begins to capture the image data in the analog video signal. Then, the display device corrects the position of the image in the display panel according to the image data in the analog image signal and a screen resolution. It is assumed that the image data starting from the analog image signal is at a low voltage level, which is used to display a black image on the display panel. If the image data in the image capture signal is output from the analog video signal output high voltage 200945287 level, the image data representing the low voltage level representing the black image is regarded as noise or judgment. Errors, which make the image data incomplete, resulting in different degrees of image distortion. In addition, in order to make the display surface of the display device have a stereoscopic effect, some display devices have two display panels, and the two display panels respectively receive a digital image signal and an analog image signal. It is assumed that the image data acquisition error occurs when the display panel receives the analog image signal, which may cause a mismatch in the image poorness on the two display panels. At this time, the display surface seen by the user may have an error image such as a black band, which affects the overall three-dimensional feeling. Therefore, how to provide an image correction method for matching a digital image in a three-dimensional display device having two display panels with an analog image is one of the important topics of the present day. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an image correction method for matching a digital image with an analog image. To achieve the above object, the present invention provides an image correction method for adjusting an image to a relative position in a display area of a display device. The display device has a first display panel and a second display panel, and the first display panel is opposite to the second display panel. The first display panel receives a digital image signal, and the second display panel receives an analog image signal. The image correction method comprises the steps of: obtaining a digital start signal and a digital end signal according to the digital image signal; and capturing an analog image of at least a portion of the analog image signal according to the digital start signal and the digital end number 200945287; The image is adjusted to the opposite position in the display area. To achieve the above objective, the present invention provides a display device including a first display panel, a second display panel, and a signal processing module. The second display panel is opposite to the first display panel, and the first display panel receives a digital image signal. The signal processing module obtains a digital start signal and a digital end signal according to the digital image signal, and refers to the digital start signal and the digital end signal to capture an analog image of at least one of the analog video signals and adjust the analog image. The relative position of the display, outputting the adjusted analog image signal to the second display panel. According to the image correction method of the present invention, the second display panel receiving the analog video signal obtains the analog video signal according to the digital start signal and the digital end signal. Since the digital start signal represents the start time or the start position of the digital image data in the digital image signal, and the digital end signal represents the end time or end position of the digital image data in the digital image signal, the analog image can be avoided. The signal is misinterpreted and causes a problem that does not match the digital video signal. [Embodiment] An image correction method according to a preferred embodiment of the present invention will be described below with reference to the related drawings. The image correction method of the preferred embodiment of the present invention can be applied to a display device 1 (shown in Figure 1) for adjusting the relative position of an image in a display area. As shown in FIG. 1 , the display device 1 includes a first display panel 11 and a second display panel 12 , wherein the first display panel 11 is opposite to the second display panel 12 . In the embodiment, the display device 1 can be a three-dimensional display device. The display device 1 further includes a control board, which has a digital signal processing unit 131, an analog signal processing unit 132, a display interface unit 133, and a power supply unit 134. The display interface unit 133, the digital signal processing unit 131, and the analog signal processing unit 132 are electrically connected to each other. The power supply unit 134 is electrically connected to the digital signal processing unit 13 and the display interface unit 133 to provide a power source. The digital signal processing unit 131 is electrically connected to a first receiving unit 14, and the analog signal processing unit 132 is electrically connected to a second receiving unit 15. In the embodiment, the first receiving unit 14 has a digital signal receiving terminal 141, and the second receiving unit 15 has a digital signal receiving terminal 151 and an analog signal receiving terminal 152. In this embodiment, the digital signal processing unit 131, the analog signal processing unit 132, the first receiving unit 14, and the second receiving unit 15 can be integrated into a signal processing module. Referring to FIG. 2 at the same time, the image correction method of the preferred embodiment of the present invention includes steps S11 to S17. Step S11 is to judge one display mode of the display device 1. In practice, the display mode of the display device 1 can be a two-dimensional display mode or a three-dimensional display mode. When the display mode of the display device 1 is the two-dimensional display mode 200945287 No; != step S14. When the display mode of the display device 1 is a three-dimensional display mode, step S12 is performed. In step S12, the digital signal receiving terminal 141 receives a digital video image and transmits the digital video signal to the digital signal processing unit (3). The digital signal processing unit single force 131 obtains one of the 7F's 7F pulse signal CK, a digital start signal D] and the digital end signal D2 according to the digital image signal. In this embodiment, the digital start signal D represents a start time signal and/or a start position signal of one of the digital images in the digital video signal.
號。因此，數位訊號處理單元131係可依據時脈訊號cK 與數位起始訊號d!擷取數位影像之起始時間及/或起始 置。number. Therefore, the digital signal processing unit 131 can capture the start time and/or start of the digital image according to the clock signal cK and the digital start signal d!.
。於本實施例中，數位結束訊號D2係代表數位影像訊 號中之一數位影像的一結束時間訊號及/或一結束位置訊 號因此，數位訊號處理單元131係可依據時脈訊號CK ❹與數位結束訊號1>2擷取數位影像之結束時間及/或結束位 置。 值得注意的是，本實施例之顯示裝置丨的第一顯示面 板11係將數位起始訊號〇!及數位結束訊號d2傳送至第二 顯示面板12。 請繼續參照圖1及圖2所示，當第二接收單元15係 經由數位訊號接收端子151接收另一數位影像訊號時，由 於第一接收單元14與第二接收單元15皆為接收數位影像 吼號，並藉由相同的數位起始訊號Di及數位結束訊號〇2 200945287 擷取數位影像。因此，顯示裝置i不會產生影像資料擷取 錯誤的情況。 當第二接收單元15經由類比訊號接收端子152接收 一類比影像訊號A〗時，則可能產生影像資料擷取錯誤的 情況。此時，數位訊號處理單元131係將數位起始訊號 及數位結束訊號％傳送至類比訊號處理單元i32。 Ο 〇如步驟S13所述，類比訊號處理單幻32依據時脈訊 號CK、數位起始訊號以及數位結束訊號仏擷取_ 比影像訊號A〗中之至少一部分的類比影像。. In this embodiment, the digital end signal D2 represents an end time signal and/or an end position signal of one of the digital video signals. Therefore, the digital signal processing unit 131 can end according to the clock signal CK ❹ and the digit. Signal 1 > 2 captures the end time and/or end position of the digital image. It should be noted that the first display panel 11 of the display device 本 of the embodiment transmits the digital start signal 〇! and the digital end signal d2 to the second display panel 12. As shown in FIG. 1 and FIG. 2, when the second receiving unit 15 receives another digital video signal via the digital signal receiving terminal 151, both the first receiving unit 14 and the second receiving unit 15 receive the digital image. Number, and capture digital images by the same digit start signal Di and digit end signal 〇2 200945287. Therefore, the display device i does not cause an error in the image data acquisition. When the second receiving unit 15 receives an analog video signal A through the analog signal receiving terminal 152, an image data capturing error may occur. At this time, the digital signal processing unit 131 transmits the digital start signal and the digital end signal % to the analog signal processing unit i32.类 As described in step S13, the analog signal processing single magic 32 captures the analog image of at least a portion of the image signal A according to the clock signal CK, the digit start signal, and the digit end signal.
更詳細的來說，當數位起始訊號Di於負緣下降後 再經過預設的N個時脈週期後，類比訊號處理單元132 β 擷取類比影像All之起始時間及或起始位置，其中U 數。於本實施例中，以例如但不限於* f 1在負緣下降，且時脈訊號⑶_ 3個時触 Ο 當數位結束訊號〇:=_比影像A”。 元132即擷取類比^、、、 後頦比讯號處理單 丨煳取類比衫像A"之結束 如步驟Si4所述，者韻干梦^ H。束位置。 示模式時，此時，續亍:的顯不模式為三维顯 係依據步驟Si3產生之類比 衫像AU之起始時間及/或起始 產生之舰 時間及/或結束位置，將類 ^^像A"之結束 對的位置，並藉由顯單象至顯示區域t相 至第二顯示面板】2。 早凡133將類比影像A】】傳送 當顯示裝置1的顯 …、式4二维顯賴式時，顯示裝 200945287 置1係以内建之— 步驟SB係判斷類比=的功能校正類比影像。 置是否正確。當類比景像、於顯示區域令相對的位 確，則進行步驟Si7 Γ 11於顯不區域中相對的位置正 t類比影像An於顯 會使得類比影像、盘數位”=位置不正確，則 於顯示區域中產生里1 像產生不匹配的情況，以致 ❹ 感。而類比影像的情況’而影響整體晝面的立體 況， /】〗於顯不區域中相對的位置不正確的情 於磲一'D:類比影像A】1扣除非黑色晝面的顯示區域為小 ==域’經過類比訊號處理單元132調整後，顯示區 域部未顯示黑色晝面。 如二驟S16所述’顯示褒置！係依據—預設解析度， 錯顯不介面單幻33載入類比影像An於顯示區域中的 一預設位置。 步驟sn係計算步驟ls或步驟10產生的類比影像 〇 An與-預設類比影像之—位移量。當位移量小於等於一 預設位移量時，顯示裝置1係將目前的解析度、位移量以 及類比影像An於顯示區域中相對的位置儲存於一電子可 抹除可程式化唯讀記憶體（electrically erasable programmable read only memory，EEPR0M)。當位移量大 於預設位移量時，則不進行儲存的動作。 綜上所述，依據本發明之影像校正方法’其係由接收 類比影像訊號的第二顯示面板依據數位起始訊號及數位 結束訊號以操取類比影像訊號。由於數位起始訊號代表數 200945287 位影像訊號中的數位影像資料的起始時間或起始位置，而 數位結束訊號代表數位影像訊號中的數位影像資料的結 束時間或結束位置，因此，可以避免對於類比影像訊號判 讀錯誤而造成與數位影像訊號不匹配的問題，以使得三維 顯示裝置正確產生影像立體效果。 以上所述僅為舉例性，而非為限制性者。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。 ❹ 【圖式簡單說明】 圖1為本發明較佳實施例之一顯示裝置之一示意圖； 圖2為本發明較佳實施例之一種影像校正方法的流程 圖；以及 圖3為本發明較佳實施例之一種影像校正方法的時序 圖。 【主要元件符號說明】 I :顯示裝置 II :第一顯示面板 12 :第二顯示面板 13 :控制板 131 :數位訊號處理單元 132 :類比訊號處理單元 133 :顯示介面單元 12 200945287 134 :電源供應單元 14 :第一接收單元 141、151 :數位訊號接收端子 15 :第二接收單元 152 :類比訊號接收端子 Ai :類比影像訊號 An:類比影像 CK ·時脈訊號 © :數位起始訊號 D2 :數位結束訊號 S11〜S17 ··步驟In more detail, after the digital start signal Di has passed the preset N clock cycles after the negative edge falls, the analog signal processing unit 132 β captures the start time and the start position of the analog image All. Where U number. In this embodiment, for example, but not limited to, * f 1 is decreased at the negative edge, and the clock signal (3) _ 3 is touched. When the digital end signal 〇: =_ is larger than the image A", the element 132 is an analogy ^, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The three-dimensional display system is based on the start time of the shirt like the start time of the AU and/or the ship time and/or the end position generated by the step Si3, and the position of the class like the ending point of the A" To the display area t phase to the second display panel] 2. As early as 133, the analog image A] is transmitted when the display device 1 is displayed, and the formula 4 is two-dimensionally displayed, the display device 200945287 is set to be built in - Step SB is to determine whether the analog correction analog image of the analog ratio is correct. When the analog image is in the opposite direction of the display area, the relative position of the step Si7 Γ 11 in the display area is positive. The display will make the analog image and the disc number "= incorrect position, then it will be produced in the display area. 1 like in the case of a mismatch is generated, so that ❹ sense. The analog image case 'is affecting the overall three-dimensional situation, /] 〗 The relative position in the display area is not correct. '一'D: analog image A] 1 deduction of the non-black surface display area is After the small == field is adjusted by the analog signal processing unit 132, the black area is not displayed in the display area. As shown in step S16, the display is displayed! Based on the preset resolution, the mismatched single-figure 33 loads the analog image An at a preset position in the display area. Step sn is to calculate the displacement amount of the analog image 〇 An and the preset analog image generated in step ls or step 10. When the displacement amount is less than or equal to a predetermined displacement amount, the display device 1 stores the current resolution, the displacement amount, and the relative position of the analog image An in the display area in an electronic erasable programmable read-only memory ( Electrical erasable programmable read only memory, EEPR0M). When the displacement amount is larger than the preset displacement amount, the storage action is not performed. In summary, the image correction method according to the present invention is performed by the second display panel receiving the analog video signal according to the digital start signal and the digital end signal to obtain the analog video signal. Since the digital start signal represents the start time or the start position of the digital image data in the 200945287 image signal, and the digital end signal represents the end time or end position of the digital image data in the digital image signal, it can be avoided The analog image signal is misinterpreted and causes a mismatch with the digital image signal, so that the three-dimensional display device correctly produces the image stereoscopic effect. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a display device according to a preferred embodiment of the present invention; FIG. 2 is a flow chart of a method for image correction according to a preferred embodiment of the present invention; A timing diagram of an image correction method of an embodiment. [Description of main component symbols] I : Display device II : First display panel 12 : Second display panel 13 : Control panel 131 : Digital signal processing unit 132 : Analog signal processing unit 133 : Display interface unit 12 200945287 134 : Power supply unit 14: first receiving unit 141, 151: digital signal receiving terminal 15: second receiving unit 152: analog signal receiving terminal Ai: analog image signal An: analog image CK · clock signal ©: digital start signal D2: end of digit Signal S11~S17 ··Steps
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