TW200901762A - Video-display device and method thereof - Google Patents
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200901762200901762
三達編號:TW2690PA 九、發明說明: 【發明所屬之技術領域】 本發明是有關於一種影像顯示裝置及其方法,且特別 是有關於一種利用延遲水平同步訊號以節省頻寬之影像 顯示裝置及其方法。 【先前技術】 請參照第1圖,其繪示乃傳統影像顯示裝置之時序 f - 圖。水平同步訊號Hsync於時間t0送出。然後於時間tl 讀取主晝面資料訊號MS,接著於時間t2讀取子晝面資料 訊號SS。由於須讀取子晝面資料訊號SS,故資料要求訊 號Data_req須於時間t2起始連續有兩個脈波,此兩個連 續脈波實質上係用以分別要求子晝面相對於主畫面之起 始位置及結束位置。 然而,若是資料要求訊號Data_req之脈波寬度等同 , 於子晝面資料訊號SS之脈波寬度,則如第1圖中所示, 資料要求訊號Data_req’會與水平同步訊號Hsync於時間t3 送出之次一個脈波相重疊,因而資料要求訊號Data_req’ 無法送出第二個脈波。故傳統的作法係將資料要求訊號 Data_req之脈波寬度壓縮,使資料要求訊號Data_req之兩 個脈波於時間t3之前傳送即已完畢。然而,如此一來,影 像顯示裝置中之處理子晝面資料訊號之單元將會佔用較 大比率之頻寬,而使得處理主晝面資料訊號之單元及其他 單元可用之頻寬減少,同時亦增加了功率消耗。 6 200901762The invention relates to an image display device and a method thereof, and more particularly to an image display device using a delayed horizontal synchronization signal to save bandwidth and Its method. [Prior Art] Referring to Fig. 1, there is shown a timing f - diagram of a conventional image display device. The horizontal sync signal Hsync is sent at time t0. Then, the main face data signal MS is read at time t1, and then the sub-surface data signal SS is read at time t2. Since the sub-surface data signal SS is to be read, the data request signal Data_req must have two consecutive pulse waves starting at time t2, and the two consecutive pulse waves are essentially used to respectively require the sub-surface to be relative to the main picture. Start position and end position. However, if the pulse width of the data request signal Data_req is equal, and the pulse width of the sub-surface data signal SS is as shown in FIG. 1, the data request signal Data_req' is sent with the horizontal synchronization signal Hsync at time t3. The next pulse wave overlaps, so the data request signal Data_req' cannot send the second pulse wave. Therefore, the traditional method is to compress the pulse width of the data request signal Data_req, so that the two pulse waves of the data request signal Data_req are transmitted before time t3. However, in this way, the unit of the processing data signal in the image display device will occupy a larger ratio of the bandwidth, so that the available bandwidth of the unit and other units for processing the main data signal is reduced, and Increased power consumption. 6 200901762
三達編號:TW2690PA 【發明内容】 有鑑於此,本發明的目的就是在提供一種影像顯示裝 置及其方法,係利用延遲水平同步訊號以節省頻寬。 根據本發明的目的,提出一種影像顯示裝置,包括時 序產生斋、主晝面處理單元以及子晝面處理單元。時序產 生器用以產生第一水平同步訊號。主畫面處理單元依據第 一水平同步訊號擷取多個主畫面資料訊號,並依序輸出主 f ,晝面資料訊號。子晝面處理單元包括延遲裝置以及尺寸縮 放器。延遲裝置耦接至時序產生器,用以將第一水平同步 訊號延遲一預擷取週期,並據以輪出第二水平同步訊號。 尺寸縮放器耦接至延遲裝置,依據第二水平同步訊號擷取 多個第一子晝面資料訊號以進行一尺寸縮放動作,並依序 輸出尺寸縮放後之多個第二子晝面資料訊號。 根據本發明的目的,另提出一種影像處理方法,用以 對多個第一子晝面資料訊號進行影像處理,包括,首先, I 產生第一水平同步訊號。然後,依據第一水平同步訊號擷 取多個主晝面資料訊號,並依序輸出主畫面資料訊號。之 後,將第一水平同步訊號延遲預擷取週期,並據以得到第 二水平同步訊號。再來,依據第二水平同步訊號擷取第一 子晝面資料訊號以進行尺寸縮放動作,並依序輸出尺寸縮 放後之多個第二子晝面資料訊號。 根據本發明的目的,再提出一種影像疊加方法,包 括’首先’依據一第一水平同步訊號依序擷取多個主晝面 資料訊號。接著,依照一第二水平同步訊號依序擷取多個 7 200901762Sanda Number: TW2690PA SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide an image display apparatus and method thereof that utilizes a delayed horizontal sync signal to save bandwidth. In accordance with an object of the present invention, an image display apparatus is provided that includes a timing generation, a main surface processing unit, and a sub-surface processing unit. The timing generator is operative to generate a first horizontal sync signal. The main picture processing unit extracts a plurality of main picture data signals according to the first horizontal synchronization signal, and sequentially outputs the main f and the side data signals. The sub-surface processing unit includes a delay device and a size scaler. The delay device is coupled to the timing generator for delaying the first horizontal synchronization signal by a pre-fetch period and rotating the second horizontal synchronization signal accordingly. The size scaler is coupled to the delay device, and the plurality of first sub-surface data signals are extracted according to the second horizontal synchronization signal to perform a size scaling operation, and sequentially output the plurality of second sub-surface data signals after the size scaling . According to another aspect of the present invention, an image processing method is provided for performing image processing on a plurality of first sub-surface data signals, including, firstly, generating a first horizontal synchronization signal. Then, according to the first horizontal synchronization signal, a plurality of main data signals are acquired, and the main picture data signals are sequentially output. Thereafter, the first horizontal sync signal is delayed by the pre-fetch period, and the second horizontal sync signal is obtained accordingly. Then, the first sub-surface data signal is captured according to the second horizontal synchronization signal to perform a size scaling operation, and the plurality of second sub-surface data signals after the size reduction are sequentially output. According to an object of the present invention, an image superimposing method is further provided, comprising: firstly, sequentially fetching a plurality of main facial data signals according to a first horizontal synchronizing signal. Then, according to a second horizontal synchronization signal, sequentially capture a plurality of 7 200901762
三達編號:TW2690PA 第一子晝面資料訊號’其中第二水平同步訊說相較於第一 水平同步訊號延遲一預擷取週期。然後,對 7 +二一 T弟一子晝面貧 料訊號進行一尺寸縮放動作,以產生二子貪 一 思面貢料。之 後,混合主晝面資料訊號及對應之第二子書 ^ 思面資料訊號以 產生一混合晝面,其中對應第二子晝面資料訊號之一子書 面係疊加於對應於主晝面資料訊號之一主畫面^上。旦 為讓本發明之上述目的、特徵、和優點能^㈣ ^ 懂,下文特舉一較佳實施例,並配合所附圖式,作詳細說 明如下: S〇 【貫施方式】 請參照第2圖,其繪示乃依照本發明一教佳實施例之 影像顯示裝置之方塊圖。影像顯示裝置2〇〇包括晝面暫存 器(加1狀1^£^)204、時序產生器2〇6、暫存器2(^、子晝 面處理單元210、主晝面處理單元212及混合器2〗4。子 晝面單元210更包括延遲裝置(scaler)21〇2及尺寸縮放器 2104。影像顯示裝置2〇〇例如為一平面顯示器或一 播放器。 一晝面暫存器204分別從主晝面來源及子晝面來源(未 繪示於圖)接收多個主晝面資料訊號M s及多個第一子書 面資料訊號ssi並暫存此些主畫面資料訊號Ms及第— 晝面資料訊號SS卜時序產生器施產生第—水平同 號Hsync卜主畫面處理單元212耦接至晝面暫存器 及時序產生器2〇6,係用以依據第—水平同步訊號 8 200901762Sanda number: TW2690PA The first sub-surface data signal' wherein the second horizontal synchronization signal is delayed by one pre-fetch period compared to the first horizontal synchronization signal. Then, a size-scaling action is performed on the 7 + 2nd T-one brother's face-to-face lean signal to generate a two-child greedy tribute. After that, the main data signal and the corresponding second sub-book data signal are mixed to generate a mixed surface, wherein one of the corresponding sub-surface data signals is superimposed on the data signal corresponding to the main surface data. One of the main screens ^. In order to achieve the above objects, features, and advantages of the present invention, a preferred embodiment will be described below in detail with reference to the accompanying drawings. 2 is a block diagram of an image display device in accordance with a preferred embodiment of the present invention. The image display device 2 includes a face buffer (add 1 shape), a timing generator 2〇6, a register 2 (^, a sub-surface processing unit 210, and a main buffer processing unit 212). And the mixer 2 is 4. The sub-surface unit 210 further includes a delay device 21〇2 and a size scaler 2104. The image display device 2 is, for example, a flat display or a player. 204 receiving a plurality of main data signals M s and a plurality of first sub-written data signals ssi from the main source and the sub-source sources (not shown) and temporarily storing the main picture data signals Ms and The first-level data signal SS-timer generator generates a first-level same-number Hsync main picture processing unit 212 coupled to the face buffer and timing generator 2〇6, which is configured to be based on the first horizontal synchronization signal 8 200901762
三達編號:TW2_PASanda number: TW2_PA
Hsync 1 ’從晝面暫存器204擷取多個主晝面資料訊號Ms, 然後主晝面處理單元212依序輸出主晝面資料訊號至 混合器214。 暫存為208搞接至時序產生器206,用以儲存時序產 生器208另輸出之一水平位移訊號X-P〇s,並將水平位移 5孔?虎X 一P OS輸出至子晝面處理單元21〇中之延遲裝置 2102。延遲裝置2102耦接至時序產生器2〇6,依據從暫存 :, 器2〇8接收之水平位移訊號Xjp〇S,將第一水平同步訊號 Hsyncl延遲一預擷取(pre-fetch)週期,並據以輸出第二水 平同步訊號Hsync2至尺寸縮放器2104。於此,第—水平 同步訊號Hsyncl係被延遲主晝面資料訊號MS之脈波與 第一子晝面資料訊號SS1之脈波之起始時間差值,而形成 第二水平同步訊號Hsync2 〇 尺寸縮放器2104耦接至延遲裝置21〇2,依據第二水 平同步訊號Hsync2從晝面暫存器204擷取多個第—子晝 面資料訊號SS1以進行一尺寸縮放的動作,然後依序輸出 經過尺寸縮放後之多個第二子晝面資料訊號SS2。其中, 第二子晝面資料訊號SS2所呈現之晝面之尺寸係小於第一 子晝面資料訊號SS1所呈現之晝面之尺寸,但其解析度大 於或等於第一子晝面資料訊號SS1所呈現之晝面之解^ 度。此外,第二子畫面資料訊號SS2所相對應之子畫面, 其相較於相對應於主晝面資料訊號Ms之主晝面’係具有 一水平位移量,此水平位移量之晝素顯示時間即為預擷取 週期。而子晝面係以一螢幕上顯示(〇SD)子晝面或一影像 9 200901762The Hsync 1 ’ retrieves a plurality of main face data signals Ms from the face buffer 204, and then the main face processing unit 212 sequentially outputs the main face data signals to the mixer 214. The temporary storage 208 is connected to the timing generator 206 for storing the timing generator 208 to output another horizontal displacement signal XP〇s, and horizontally shifting the 5-hole? Tiger X-P OS output to the sub-surface processing unit 21 The delay device 2102 in the middle. The delay device 2102 is coupled to the timing generator 2〇6, and delays the first horizontal synchronization signal Hsync1 by a pre-fetch period according to the horizontal displacement signal Xjp〇S received from the buffer: And outputting the second horizontal synchronization signal Hsync2 to the size scaler 2104 accordingly. In this case, the first horizontal synchronization signal Hsync1 is delayed by the start time difference between the pulse wave of the main data signal MS and the pulse signal of the first sub-surface data signal SS1 to form a second horizontal synchronization signal Hsync2 〇 size The scaler 2104 is coupled to the delay device 21〇2, and extracts a plurality of first-sub-surface data signals SS1 from the face buffer 204 according to the second horizontal synchronization signal Hsync2 to perform a size scaling operation, and then sequentially outputs After scaling, a plurality of second sub-surface data signals SS2. The size of the surface of the second sub-surface data signal SS2 is smaller than the size of the surface of the first sub-surface data signal SS1, but the resolution is greater than or equal to the first sub-surface data signal SS1 The resolution of the face presented. In addition, the sub-picture corresponding to the second sub-picture data signal SS2 has a horizontal displacement compared to the main surface corresponding to the main surface data signal Ms, and the pixel display time of the horizontal displacement is For the pre-fetch cycle. The sub-face is displayed on a screen (〇SD) sub-plane or an image 9 200901762
三達編號:TW2690PA 中影像(pip)子晝面之形式存在於主畫面中。 混合器214例如為一混波器,其耦接主晝面處理單元 212及子晝面處理單元210,從主畫面處理單元212接收 主晝面資料訊號MS,並從子晝面處理單元210接收第二 子晝面資料訊號SS2,然後混合主畫面資料訊號MS及第 二子晝面資料訊號SS2以輸出晝面訊號S。 請參照第3圖,其繪示乃依照本發明一較佳實施例之 影像處理方法之流程圖。首先,於步驟302中,產生第一 f 水平同步訊號。然後,於步驟304中,依據第一水平同步 訊號擷取多個主晝面資料訊號,並依序輸出主晝面資料訊 號。之後,於步驟306中,將第一水平同步訊號延遲一預 擷取週期,並據以得到第二水平同步訊號。 再來,於步驟308中,依據第二水平同步訊號擷取多 個第一子晝面資料訊號以進行尺寸縮放動作並得到多個 第二子晝面資料訊號,然後依序輸出多個第二子晝面資料 f 訊號。之後,於步驟310中,混合主晝面資料訊號及第二 子畫面資料訊號以輸出一晝面訊號。 請參照第4圖,其繪示乃依照本發明一較佳實施例之 影像顯示裝置200之時序圖。於第零時間t0’,時序產生器 206送出第一水平同步訊號Hsyncl,然後晝面暫存器204 開始輸出主畫面資料訊號MS至主晝面處理單元212,並 於第二時間t2’之前傳送完畢。於第一時間tl’,延遲裝置 2102送出第二水平同步訊號Hsync2至尺寸縮放器2104, 然後晝面暫存器204開始輸出第一子畫面資料訊號SS1至 200901762Sanda number: The form of the image (pip) sub-surface in TW2690PA exists in the main screen. The mixer 214 is, for example, a mixer coupled to the main surface processing unit 212 and the sub-surface processing unit 210, receives the main data signal MS from the main picture processing unit 212, and receives the main data from the sub-surface processing unit 210. The second sub-surface data signal SS2 is then mixed with the main picture data signal MS and the second sub-surface data signal SS2 to output the kneading signal S. Please refer to FIG. 3, which is a flow chart of an image processing method according to a preferred embodiment of the present invention. First, in step 302, a first f horizontal sync signal is generated. Then, in step 304, a plurality of main data signals are extracted according to the first horizontal synchronization signal, and the main data signals are sequentially output. Then, in step 306, the first horizontal synchronization signal is delayed by a pre-fetch period, and the second horizontal synchronization signal is obtained accordingly. Then, in step 308, a plurality of first sub-surface data signals are extracted according to the second horizontal synchronization signal to perform a size scaling operation, and a plurality of second sub-surface data signals are obtained, and then multiple seconds are sequentially output. Sub-surface data f signal. Then, in step 310, the main data signal and the second sub-picture data signal are mixed to output a side signal. Please refer to FIG. 4, which is a timing diagram of an image display device 200 in accordance with a preferred embodiment of the present invention. At the zeroth time t0', the timing generator 206 sends the first horizontal synchronization signal Hsync1, and then the buffer register 204 starts to output the main picture data signal MS to the main buffer processing unit 212, and transmits it before the second time t2'. Finished. At the first time t1', the delay device 2102 sends the second horizontal synchronization signal Hsync2 to the size scaler 2104, and then the face buffer 204 starts outputting the first sub-picture data signals SS1 to 200901762.
三達編號:TW2690PA 尺寸縮放器2104。其中,第一子晝面資料訊號SS1包括連 續兩個脈波,此兩個連續脈波實質上係分別為子畫面相對 於主畫面之起始位置及結束位置。而由於第二水平同步訊 號Hsync2相較於第一水平同步訊號Hsyncl慢預擷取週期 △ t=tl’一 t0’,故第一子畫面資料訊號SS1之連續兩個脈 波可以於第三時間t3,之前傳送完畢。 於第4圖中,第零時間t0’及第一時間tl,之差即第一 , 水平同步訊號Hsyncl及第二水平同步訊號Hsync2之週期 差’即相對應之預擷取週期。此外,於第三時間t3’,時序 控制器306送出第二水平同步訊號Hsync2之下一個脈波。 本發明上述實施例所揭露之影像顯示裝置及其方 法,係利用延遲水平同步訊號以節省頻寬。實施例中之第 一水平同步訊號Hsync2之週期較第一水平同步訊號 Hsyncl之週期延遲時間tl’ — tQ,,故第—子晝面資料訊號 ^之連續兩個脈波不會與第二水平同步訊號Hsync2之 t脈波重豎,因此不須對第一子畫面資料訊號SS1之連 2個脈波進行壓縮義作,故可以節省頻寬,使得處理 率S處理單元及其他單元可用之頻寬增加 ,並減少了功 铁,t所述,雖然本發明已以一較佳實施例揭露如上, Ϊ發明之2限ΐ本發明、,/壬何熟習此技藝者,在不脫離 本發明之^和範#可作各種之更動與潤飾,因此 準。I蔓範圍當視後附之申請專利範圍所界定者為 11 200901762Sanda number: TW2690PA size scaler 2104. The first sub-surface data signal SS1 includes two consecutive pulse waves, and the two consecutive pulse waves are substantially the start position and the end position of the sub-picture relative to the main picture, respectively. Since the second horizontal synchronization signal Hsync2 is slower than the first horizontal synchronization signal Hsync1, the pre-fetch period Δt=tl'-t0', the consecutive two pulses of the first sub-picture data signal SS1 can be in the third time. T3, before the transfer is completed. In Fig. 4, the difference between the zeroth time t0' and the first time t1 is the first, and the period difference between the horizontal synchronizing signal Hsync1 and the second horizontal synchronizing signal Hsync2 is the corresponding pre-fetching period. Further, at the third time t3', the timing controller 306 sends a pulse wave below the second horizontal synchronizing signal Hsync2. The image display device and the method thereof disclosed in the above embodiments of the present invention utilize a delayed horizontal synchronization signal to save bandwidth. The period of the first horizontal synchronization signal Hsync2 in the embodiment is shorter than the period delay time t1'-tQ of the first horizontal synchronization signal Hsync1, so that the two consecutive pulses of the first sub-surface data signal ^ are not related to the second level. The t-pulse of the sync signal Hsync2 is vertical, so there is no need to compress the two pulse waves of the first sub-picture data signal SS1, so that the bandwidth can be saved, so that the processing rate S processing unit and other units can be used. The invention has been described above with reference to a preferred embodiment, and the invention is limited to the invention, and/or those skilled in the art, without departing from the invention. ^ and Fan # can be used for a variety of changes and retouching, so accurate. I Scope is defined as the scope of the patent application attached to it. 11 200901762
三達編號:TW2690PA 【圖式簡單說明】 第1圖繪示傳統影像顯示裝置之時序圖。 第2圖繪示依照本發明一較佳實施例之影像顯示裝 置之方塊圖。 第3圖繪示依照本發明一較佳實施例之影像處理方 法之流程圖。 第4圖繪示依照本發明一較佳實施例之影像顯示裝 置200之時序圖。 f v 【主要元件符號說明】 200 :影像顯示裝置 204 :晝面暫存器 206 :時序產生器 208 :暫存器 210 :子晝面處理單元 212 :主晝面處理單元 、 214:混合器 2102 :延遲裝置 2104 :尺寸縮放器 12Sanda number: TW2690PA [Simple description of the drawing] Figure 1 shows the timing diagram of the conventional image display device. 2 is a block diagram of an image display device in accordance with a preferred embodiment of the present invention. FIG. 3 is a flow chart showing an image processing method according to a preferred embodiment of the present invention. FIG. 4 is a timing diagram of an image display device 200 in accordance with a preferred embodiment of the present invention. Fv [Description of main component symbols] 200: Image display device 204: Face buffer 206: Timing generator 208: Register 210: Sub-surface processing unit 212: Main surface processing unit, 214: Mixer 2102: Delay device 2104: size scaler 12
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI471837B (en) * | 2012-05-24 | 2015-02-01 | Himax Tech Ltd | Panel control apparatus and operating method thereof |
US9105244B2 (en) | 2012-05-16 | 2015-08-11 | Himax Technologies Limited | Panel control apparatus and operating method thereof |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9105244B2 (en) | 2012-05-16 | 2015-08-11 | Himax Technologies Limited | Panel control apparatus and operating method thereof |
TWI471837B (en) * | 2012-05-24 | 2015-02-01 | Himax Tech Ltd | Panel control apparatus and operating method thereof |
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