201203094 六、發明說明： 【發明所屬之技術領域】 本發明係關於雙螢幕電子裝置，更係關於可同時在雙 螢幕及外接螢幕上正確顯示畫面之裝置與方法。 【先前技術】 具有雙螢幕之行動電話，可滿足使用者一邊執行應用 程式一邊觀賞影片之需求，故已逐漸成為流行的行動電話 機種。為了增強多媒體影音功能，行動電話甚至更利用一 局清晰度多媒體介面（High Definition Multimedia Interface ’ HDMI)將高品質的影音資訊輸出至外接的電視或 投影機等顯示裝置。 第1圖為習知具有HDMI輸出之雙螢幕行動電話 100。如同一般行動電話，該雙螢幕行動電話1〇〇包括一中 央處理器（CPU)102、一記憶體1〇4、一電源管理晶片 (PMIC)106、射頻晶片108等元件。除此之外，該雙螢幕行 動電話100尚包括一第一液晶顯示面板112、一第二液晶 顯示面板114、一 HDMI傳輸晶片ι16及一 HDMI輸出埠 118。其中，該第一液晶顯示面板112與該第二液晶顯示面 板114分別將視訊顯示於第一與第二螢幕（圖未示）上。中 央處理器102更包括一第一液晶顯示面板控制器122以及 一第二液晶顯示面板控制器124。該第一液晶顯示面板112 及該第二液晶顯示面板114可透過RGB匯流排分別自該中 央處理器102之第一液晶顯示面板控制器122以及第二液 晶顯示面板控制器124上取得輸出之視訊，並透過串列匯 PNAI-DI-0082-TW/0814-A42406TWF 4 201203094 流排界面（Serial Peripheral Interface ’ SPI)受中央處理号 1 〇2 之控制。 該第一液晶顯示面板控制器122以該及一第二液晶顯 示面板控制器124通常為RGB介面，用以提供rgb格式 之視訊輸出。RGB是一種常見的點陣圖顏色的編碼方法， 採用紅、綠、藍三原色的光學強度來表示一顏色，可應用 於陰極射線管、液晶、電漿等各類顯示器。 該HDMI傳輸晶片116，除了從中央處理器1〇2上取 • 得RGB視訊外，另分別透過I2S介面及I2C介面自中央處 理器102上取得聲音資料及控制指令，並將取得之影音訊 息透過HDMI輸出埠118輸出至與行動電話ι00連接之一 外接螢幕（圖未示）。值得注意的是，習知的雙螢幕手機中， 通常為了節省系統資源，兩液晶顯示面板中之至少一者（以 第1圖之第二液晶顯示面板114為例）必須與該HDMI傳輸 晶片116共用同一個液晶顯示面板控制器（以第1圖之第二 液晶顯示面板控制器124為例），並接收相同之視訊輸出。 然而’該HDMI傳輸晶片122與液晶顯示面板112、114 所此接收之視訊規格其實並不相同。舉例而言，該HDMI 傳輸晶片122能夠接收解析度高達1280χ720(720ρ)之視訊 (甚至達到UXGA之1600x1200)，但液晶顯示面板ι12、114 卻只能支援解析度最高為1024x600之視訊(行動電話之液 晶螢幕通常為WVGA之800x600之格式）。因此，當使用 者欲以連接至雙螢幕行動電話1〇〇的外接HDMI電視播放 HDMI視訊時，液晶顯示面板控制器丨24輸出之該HDMI 南解析度視訊將無法被第二液晶顯不面板114解讀，進而 PNAI-DI-0082-TW/0814-A42406TWF 5 201203094 造成雙螢幕中至少一者無法正常顯示而關閉。 為提升行動電話之多媒體功能，仍需要一種能夠同時 在雙螢幕及外接螢幕上正確顯示畫面之方法及裝置。 【發明内容】 本發明提供一種雙螢幕電子裝置，用以同時在雙螢幕 及外接螢幕上正確顯示晝面，包括：一第一顯示控制器， 用以提供一第一視訊至一第一螢幕；一第二顯示控制器， 用以提供一第二視訊至一第二螢幕；一視訊調整晶片，耦 接於該第二顯示控制器與該外接螢幕之間，用以調整該第 二視訊之解析度及掃描方式並將調整後之該第二視訊輸 出。 本發明另提供一種顯示晶片，内建於一種雙螢幕電子 裝置，用以同時在雙螢幕及外接螢幕上正確顯示晝面，其 中該雙螢幕電子裝置包括一第一顯示控制器，用以提供一 第一視訊至一第一螢幕；以及一第二顯示控制器，用以提 供一第二視訊至一第二螢幕，該顯示晶片包括：一視訊調 整單元，耦接於該第二顯示控制器與該外接螢幕之間，用 以調整該第二視訊之解析度及掃描方式並將調整後之該第 二視訊輸出。 本發明另提供一種同時在電子裝置之雙螢幕及外接螢 幕上正確顯示晝面的方法，其中該行動電子裝置包括一第 一顯示控制器，用以提供一第一視訊至一第一螢幕；以及 一第二顯示控制器，用以提供一第二視訊至一第二螢幕； 該方法包括：調整該第二視訊之解析度；調整該第二視訊 PNAI-DI-0082-TW/0814-A42406TWF 6 201203094 之掃描方式；以該第一螢幕顯示該第一視訊；以該第二螢 幕顯示該第二視訊；以及以該外接螢幕顯示調整後之該第 二視訊。 本發明另提供一種顯示晶片，配置於一内建螢幕之電 子裝置，用以同時在該内建螢幕及外接螢幕上正確顯示畫 面，其中該電子裝置包括一顯示控制器，用以提供一第一 視訊至該内建螢幕，其中該内建螢幕與該外接螢幕共用該 顯示控制器，該顯示晶片包括：一視訊調整單元，耦接於 該顯示控制器與該外接螢幕之間，用以調整該第一視訊之 解析度及掃描方式並將調整後之該第一視訊輸出，其中： 當該顯示控制器提供具有一高解析度之視訊，且該内建螢 幕只能顯示具有一低解析度之視訊時，該視訊調整單元將 該第一視訊從該高解析度調降(downscale)至該低解析度， 並將調整後之該第一視訊提供至該内建螢幕；以及當該内 建螢幕只能採用一垂直掃描方式之視訊，且該外接螢幕只 能採用一水平掃描方式之視訊時，該視訊調整單元將該第 一視訊之該垂直掃描方式旋轉成該水平掃描方式，並將調 整後之該第一視訊提供至該外接螢幕。 【實施方式】 下文為介紹本發明之最佳實施例。各實施例用以說明 本發明之原理，但非用以限制本發明。本發明之範圍當以 後附之權利要求項為準。 第2A圖為依據本發明一第一實施例之一雙螢幕電子 PNAI-DI-0082-TW/0814-A42406TWP 7 201203094 裝置200之不意圖。本發明之雙螢幕電子裝置2〇〇可同時 在雙螢幕及外接螢幕上正常顯示畫面。雙螢幕電子 200 ’舉例而言’可以是-”幕行動電話，包括—處理單 元202(舉例而言，為一中央處理器）、一記憶體2〇4、一電 源管理晶片（顺〇施、-射頻晶片施等。除此之外，本 發明之雙螢幕電子裝置200更包括一第一顯示模組212、 一第二顯示模組214、一視訊調整晶片23〇、一緩衝器24〇、 一視訊傳輸晶片216及一視訊輪出蟑218。 該第一顯示模組212與該第二顯示模組214分別將視 訊顯示於行動電話200之第一螢幕與第二螢幕（圖未示） 上。視訊輸出埠218可連接—外接螢幕25〇，而該視訊傳 輸晶片216可透過該視訊輸出埠218將視訊顯示於該外接 螢幕之上。 在第一實施例中，該第一顯示模組212與該第二顯示 模組214可為液晶顯示面板，而第一及第二螢幕可為液晶 螢幕，舉例而吕，皆只能支援具有較低解析度(例如1〇24χ 600)之視訊。在此實施例中，視訊傳輸晶片216為HDMI 傳輸晶片，視訊輸出埠218為HDMI輸出埠，而外接螢幕 250則為使用高清晰度多媒體介面（High以加出⑽ Multimedia Interface ’ HDMI)之電視，可支援具有較高解析 度（例如1280x720)之視訊。 本發明之處理單元202包括一第一顯示控制器222以 及一第二顯示控制器224。舉例而言，該等顯示控制器222 與224可為RGB介面，用以提供RGB視訊。其中，該第 一顯示控制器222係耦接至該第一顯示模組212，可透過201203094 VI. Description of the Invention: [Technical Field] The present invention relates to a dual screen electronic device, and more to an apparatus and method for correctly displaying a picture on both a dual screen and an external screen. [Prior Art] A mobile phone with a dual screen has become a popular mobile phone model by satisfying the user's need to execute an application while watching a movie. In order to enhance the multimedia audio and video function, the mobile phone even uses a High Definition Multimedia Interface (HDMI) to output high-quality audio and video information to an external display device such as a television or a projector. The first figure shows a dual-screen mobile phone 100 having an HDMI output. Like a general mobile phone, the dual screen mobile phone 1 includes a central processing unit (CPU) 102, a memory unit 4, a power management chip (PMIC) 106, and a radio frequency chip 108. In addition, the dual-screen mobile phone 100 further includes a first liquid crystal display panel 112, a second liquid crystal display panel 114, an HDMI transmission chip ι16, and an HDMI output port 118. The first liquid crystal display panel 112 and the second liquid crystal display panel 114 respectively display video on the first and second screens (not shown). The central processor 102 further includes a first liquid crystal display panel controller 122 and a second liquid crystal display panel controller 124. The first liquid crystal display panel 112 and the second liquid crystal display panel 114 can respectively obtain the output video from the first liquid crystal display panel controller 122 and the second liquid crystal display panel controller 124 of the central processing unit 102 through the RGB bus bar. And through the serial port PNAI-DI-0082-TW/0814-A42406TWF 4 201203094 The stream interface (Serial Peripheral Interface 'SPI) is controlled by the central processing number 1 〇2. The first liquid crystal display panel controller 122 and the second liquid crystal display panel controller 124 are generally RGB interfaces for providing video output in the rgb format. RGB is a common encoding method for dot matrix color. It uses the optical intensities of the three primary colors of red, green and blue to represent a color, and can be applied to various types of displays such as cathode ray tubes, liquid crystals, and plasma. The HDMI transmission chip 116, in addition to the RGB video from the central processing unit 1 〇 2, obtains audio data and control commands from the central processing unit 102 through the I2S interface and the I2C interface, respectively, and transmits the obtained audio and video information. The HDMI output port 118 is output to an external screen (not shown) connected to the mobile phone ι00. It should be noted that in the conventional dual screen mobile phone, at least one of the two liquid crystal display panels (for example, the second liquid crystal display panel 114 of FIG. 1 ) must be associated with the HDMI transmission chip 116 in order to save system resources. The same liquid crystal display panel controller is shared (take the second liquid crystal display panel controller 124 of FIG. 1 as an example) and receive the same video output. However, the video specifications received by the HDMI transmission chip 122 and the liquid crystal display panels 112, 114 are not the same. For example, the HDMI transmission chip 122 can receive video with a resolution of up to 1280 χ 720 (720 ρ) (even up to 1600 x 1200 of UXGA), but the liquid crystal display panels ι 12 and 114 can only support video with a resolution of up to 1024 x 600 (mobile phone The LCD screen is usually in the format of WVGA 800x600). Therefore, when the user wants to play HDMI video with an external HDMI TV connected to the dual screen mobile phone, the HDMI south resolution video output by the liquid crystal display panel controller 丨24 cannot be displayed by the second liquid crystal display panel 114. Interpretation, and further PNAI-DI-0082-TW/0814-A42406TWF 5 201203094 causes at least one of the dual screens to be displayed and closed. In order to enhance the multimedia functions of mobile phones, there is still a need for a method and apparatus for correctly displaying pictures on both the dual screen and the external screen. SUMMARY OF THE INVENTION The present invention provides a dual-screen electronic device for correctly displaying a facet on a dual screen and an external screen, including: a first display controller for providing a first video to a first screen; a second display controller for providing a second video to a second screen; a video adjustment chip coupled between the second display controller and the external screen for adjusting the resolution of the second video Degree and scanning mode and the adjusted second video output. The present invention further provides a display chip built in a dual-screen electronic device for correctly displaying a kneading surface on a dual screen and an external screen, wherein the dual-screen electronic device includes a first display controller for providing a a first video to a first screen; and a second display controller for providing a second video to a second screen, the display chip comprising: a video adjustment unit coupled to the second display controller and The external screen is used to adjust the resolution and scanning mode of the second video and output the adjusted second video. The present invention further provides a method for correctly displaying a kneading surface on a dual screen and an external screen of an electronic device, wherein the mobile electronic device includes a first display controller for providing a first video to a first screen; a second display controller for providing a second video to a second screen; the method comprising: adjusting a resolution of the second video; adjusting the second video PNAI-DI-0082-TW/0814-A42406TWF 6 The scanning mode of 201203094; displaying the first video by the first screen; displaying the second video by the second screen; and displaying the adjusted second video by the external screen. The present invention further provides a display chip disposed on a built-in screen electronic device for correctly displaying a picture on the built-in screen and an external screen at the same time, wherein the electronic device includes a display controller for providing a first Video display to the built-in screen, wherein the built-in screen and the external screen share the display controller, the display chip includes: a video adjustment unit coupled between the display controller and the external screen for adjusting the The resolution and scanning mode of the first video and the adjusted first video output, wherein: when the display controller provides video with a high resolution, and the built-in screen can only display a low resolution During video recording, the video adjustment unit downscales the first video from the high resolution to the low resolution, and provides the adjusted first video to the built-in screen; and when the built-in screen The video can only be used in a vertical scanning mode, and the external video screen can only use a horizontal scanning mode of video, the video adjusting unit is vertical to the first video. Described embodiment to rotation of the horizontal scanning, and provides the modulation to the first external screen after the entire video. [Embodiment] Hereinafter, the preferred embodiment of the present invention will be described. The examples are intended to illustrate the principles of the invention, but are not intended to limit the invention. The scope of the invention is defined by the appended claims. 2A is a schematic diagram of a dual screen electronic PNAI-DI-0082-TW/0814-A42406TWP 7 201203094 device 200 in accordance with a first embodiment of the present invention. The dual-screen electronic device 2 of the present invention can normally display pictures on both the dual screen and the external screen. The dual screen electronics 200' can be, for example, a "screen mobile phone, including - a processing unit 202 (for example, a central processing unit), a memory device 2, a power management chip, In addition, the dual-screen electronic device 200 of the present invention further includes a first display module 212, a second display module 214, a video adjustment chip 23, a buffer 24, a video transmission chip 216 and a video wheel output 218. The first display module 212 and the second display module 214 respectively display video on the first screen and the second screen (not shown) of the mobile phone 200. The video output port 218 can be connected to the external screen 25, and the video transmission chip 216 can display the video on the external screen through the video output port 218. In the first embodiment, the first display module 212 The second display module 214 can be a liquid crystal display panel, and the first and second screens can be liquid crystal screens. For example, only the video with lower resolution (for example, 1〇24χ600) can be supported. In this embodiment, the video transmission chip 216 is an HDMI transmission chip, video output port 218 is an HDMI output port, and external screen 250 is a high-definition multimedia interface (High to add (10) Multimedia Interface 'HDMI) to support higher resolution (for example) 1280x720) The processing unit 202 of the present invention includes a first display controller 222 and a second display controller 224. For example, the display controllers 222 and 224 can be RGB interfaces for providing RGB video. The first display controller 222 is coupled to the first display module 212 and is permeable.
PNAI-DI-0082-TW/0814-A42406TWF 201203094 該第一顯示模組212將一第一視訊提供至該第一螢幕之 上，而該第二顯示控制224係耗接至該第二顯示模組212， 可透過該第二顯示模組212將一第二視訊提供至該第二螢 幕之上。此外，第一顯示控制器224另提供視訊至該外接 螢幕250。在本發明中，該第二螢幕與該外接螢幕25〇共 用該第二顯示控制器224，如第2圖所示。在此第一實施 例中，該第一視訊與該第二視訊可同為具有低解析度(例如 1024x600)之視訊，而該外接螢幕所能接收之視訊為具有高 籲 解析度(例如HDMI規格之128〇χ720)之視訊。 在一實施例中，本發明之視訊傳輸晶片216可以是先 刖技術中所述之HDMI傳輸晶片n6，其以rgb、I2S及 I2C匯流排與處理單元202連接’並接收該處理單元2〇2 之視訊、音矾及控制指令。然而，在此實施例中，本發明 之視訊傳輸晶片216與習知的111)]^1傳輸晶片116有所不 同。如第2圖所示，兩者相異之處在於，本發明之視訊傳 輸晶片216’可從本發明之視訊調整晶片23()接收視訊， •另以I2S及I2C匯流排自處理單元2〇2取得音訊及控制指 為了克服習知行動電話無法在其雙螢幕(即第一螢幕 與第二螢幕）及其外接榮幕三者上同時並正確顯示視訊的 缺點’本發明在雙勞幕電子裝置2〇〇上配置了一視訊調整 晶片230 °該視訊調整晶片230係耦接於該第二顯示控制 器224與該外接螢幕250之間，用以從接收該第二顯示控 制器224上接收該第二視訊、調整該第二視訊之解析度及 掃描方式、並將调整後之該第二視訊輸出。詳細的調整程 PNAI-DI-0082-TW/0S14-A42406TWF 9 201203094 序將說明如下： 調整解析度：當該第二顯示控制器224提供具有一低 解析度（1024x600)之該第二視訊，且該外接螢幕只能顯示 具有一高解析度（1280x720)之視訊時，該視訊調整晶片230 將該第二視訊從該低解析度調升(Upscale)至該高解析度。 之後，該視訊調整晶片230更將調整後之該第二視訊提供 至該外接螢幕250，以符合外接螢幕250對視訊解析度之 規格要求。在一實施例中，調升視訊的方法包括使用插補 法’但本發明不必以此為限。 调整知描方式：一般來說’行動電話之螢幕可同時採 用肖相模式（portrait mode)或全景模式（landscape mode)呈 現影像畫面，分別如第3A、3B圖所示。多數行動電話之 螢幕皆以相於肖相模式之晝面呈水平的方向進行影像掃 描，如第3Α圖所示。此掃描方式即等同以相對於全景模 式之晝面呈垂直的方向進行掃描（在此通稱為「垂直掃描方 式」以簡化說明），如3Β圖所示。然而，外接的HDMI電 視通常只能以相對於全景模式之晝面呈水平的方向進行掃 描（在此通稱為「水平掃描方式」以簡化說明），如第3C圖 所示。因此’當行動電話欲使外接電視顯示其輸出之全景 模式晝面時’會遭遇到掃描方式不相容的問題。本發明之 視訊調整晶片230即可用來解決此問題。簡單地說，若該 第二螢幕只能採用垂直掃描方式之視訊，且該外接螢幕只 能採用水平掃描方式之視訊時’則該視訊調整晶片230將 該第二視訊之垂直掃描方式旋轉成水平掃描方式。在其他 的實施例中’若該第二螢幕只能採用水平掃描方式之視 PNAI-DI-0082-TW/0814-A42406TWF 10 201203094 訊，且該外接螢幕只能採用垂直掃描方式之視訊時，則該 視訊調整晶片230將該第二視訊之水平掃描方式旋轉成垂 直掃描方式。 本發明不限定上述調整解析度及掃描方式之執行順 序，在一較佳貫施例中，兩調整程序也可同時執行，抑或 擇一執行。此外，調整解析度及掃描方式的過程皆涉及影PNAI-DI-0082-TW/0814-A42406TWF 201203094 The first display module 212 provides a first video to the first screen, and the second display control 224 is coupled to the second display module. 212. A second video can be provided on the second screen through the second display module 212. In addition, the first display controller 224 provides video to the external screen 250. In the present invention, the second screen and the external screen 25 are shared by the second display controller 224 as shown in FIG. In this first embodiment, the first video and the second video may be video with low resolution (for example, 1024×600), and the video received by the external screen has high resolution (for example, HDMI specification). 128〇χ720) video. In one embodiment, the video transmission chip 216 of the present invention may be the HDMI transmission chip n6 described in the prior art, which is connected to the processing unit 202 by the rgb, I2S, and I2C bus bars and receives the processing unit 2〇2. Video, audio and control commands. However, in this embodiment, the video transfer wafer 216 of the present invention differs from the conventional 111) transfer wafer 116. As shown in FIG. 2, the difference between the two is that the video transmission chip 216' of the present invention can receive video from the video adjustment chip 23() of the present invention, and the other is the I2S and I2C bus from the processing unit 2〇. 2 Obtaining audio and control means to overcome the shortcomings of the conventional mobile phone that cannot simultaneously and correctly display video on its dual screen (ie, the first screen and the second screen) and its external glory. A video adjustment chip 230 is disposed on the device 2, and the video adjustment chip 230 is coupled between the second display controller 224 and the external screen 250 for receiving from the second display controller 224. The second video, adjusting the resolution and scanning mode of the second video, and outputting the adjusted second video. The detailed adjustment procedure PNAI-DI-0082-TW/0S14-A42406TWF 9 201203094 will be described as follows: Adjusting the resolution: when the second display controller 224 provides the second video with a low resolution (1024x600), and When the external screen can only display a video with a high resolution (1280x720), the video adjustment chip 230 upscales the second video from the low resolution to the high resolution. Then, the video adjustment chip 230 further supplies the adjusted second video to the external screen 250 to meet the specification requirements of the external screen 250 for video resolution. In an embodiment, the method of up-converting video includes using an interpolation method', but the invention is not necessarily limited thereto. Adjusting the way of reading: Generally speaking, the screen of the mobile phone can simultaneously display the image in the portrait mode or the landscape mode, as shown in Figures 3A and 3B respectively. Most mobile phone screens are scanned in a horizontal direction with respect to the face of the phase, as shown in Figure 3. This scanning method is equivalent to scanning in a direction perpendicular to the plane of the panoramic mode (referred to herein as "vertical scanning mode" to simplify the description), as shown in Fig. 3. However, an external HDMI TV can usually only be scanned in a horizontal direction relative to the plane of the panoramic mode (referred to herein as "horizontal scanning mode" to simplify the description), as shown in Fig. 3C. Therefore, when the mobile phone wants to make the external TV display the panoramic mode of its output, it will encounter the problem that the scanning method is incompatible. The video adjustment chip 230 of the present invention can be used to solve this problem. Briefly, if the second screen can only use the vertical scanning mode video, and the external screen can only use the horizontal scanning mode of video, then the video adjustment chip 230 rotates the second video vertical scanning mode to a horizontal level. scanning method. In other embodiments, if the second screen can only use the horizontal scanning mode of PNAI-DI-0082-TW/0814-A42406TWF 10 201203094, and the external screen can only use the vertical scanning mode of video, then The video adjustment chip 230 rotates the horizontal scanning mode of the second video into a vertical scanning mode. The present invention does not limit the execution order of the above-mentioned adjustment resolution and scanning mode. In a preferred embodiment, the two adjustment programs may be executed simultaneously or alternatively. In addition, the process of adjusting the resolution and scanning method involves shadows.
像處理及運算，本發明中耦接至該視訊調整晶片23〇的缓 衝器240即可用以暫存調整中之該第二視訊。緩衝器2的 為一種記憶體，舉例而言，可為一靜態隨機存取記悵 (Static Random Access Memory，SDRAM)。然而，▲ 技藝人士可依據本發明之精神自行設計並選用適當之二 體’不必以前述實例為限。 田。己憶 第2Β圖為依據本發明一第二實施例之一雙鸯幕 裝置300之示意圖。第二實施例之雙螢幕電子裳置子 似於前述第一實施例之雙螢幕電子裝置2〇〇，包括—产相 單元302、一第一顯示模組312、一第二顯示模組314处理 緩衝器340及一視訊輸出埠318。其中該處理單元 括一第一顯示控制器322,用以提供一第一視訊至一第包 螢幕（圖未示）；以及一第二顯示控制器324,用以提供— 二視訊至一第二螢幕（圖未示）。此外，該視訊輪出埠3以 可與一外接螢幕350相連接。值得注意的是，本實施例 雙螢幕電子裝置300更包括一顯示晶片330。該顯示曰之 330將一視訊調整單元331及一外接顯示單元332整=於 其中。該視訊調整單元331相似於第一實施例中+、Β。' 整晶片230，其耦接於該第二顯示控制器324斑外接 PNAI-DI-0082-TW/0814-A42406TWF 11 201203094 350之間，用以調整該第二視訊之解析度及掃描方式，並 將調整後之該第二視訊輸出至該外接螢幕35〇。另外，該 外接顯示單元332則相似於前述之視訊傳輸晶片216，其 耦接於該視訊調整單元331與該外接螢幕35〇之間，用以 自該視訊調整晶片接收調整後之該第二視訊，自處理單元 3 02接收聲θ資料及控制指令，並將一視聽資料輸出輸出 至該外接螢幕350。此外’可將數位鎖相迴路(digitalphase locked loop)及時序控制器（timing controller，Tcon)配置於 該顯示晶片330中’用以調整該第二視訊之時序以符合 HDMI輸出要求。 第2C圖為依據本發明一第三實施例之一雙螢幕電子 裝置400之示意圖。第三實施例之雙螢幕電子裝置4〇〇相 似於前述第二實施例之雙螢幕電子裝置3〇〇,包括一處理 單元402、一第一顯示模組412、一第二顯示模組414、一 緩衝器440及一視訊輸出埠418。其中該處理單元4〇2包 括一第一顯示控制器422，用以提供一第一視訊至一第一 螢幕；以及一第二顯示控制器424，用以提供一第二視$ 至一第二螢幕。此外，該視訊輸出埠418可與一外接螢幕 450相連接。本實施例之雙螢幕電子裝置4〇〇更包括與前 述第二實施例相似之一顯示晶片430。該顯示晶片43〇': 一視訊調整單元431及一外接顯示單元432整合於其中: 該視訊§周整單元431搞接於該第二顯示控制器424與外接 螢幕450之間，用以調整該第二視訊之解析度及掃插方 式，並將s周整後之該第二視訊輸出。該外接顯示單元 則相似於前述之外接顯示單元332 ’其轉接於該視訊調整For processing and computing, the buffer 240 coupled to the video conditioning chip 23A of the present invention can be used to temporarily store the second video in the adjustment. The buffer 2 is a type of memory, for example, a static random access memory (SDRAM). However, the skilled artisan can devise and select the appropriate second embodiment in accordance with the spirit of the present invention. field. It is recalled that the second diagram is a schematic view of a double curtain device 300 in accordance with a second embodiment of the present invention. The dual-screen electronic device of the second embodiment is similar to the dual-screen electronic device 2 of the first embodiment, including the production phase unit 302, a first display module 312, and a second display module 314. The buffer 340 and a video output port 318. The processing unit includes a first display controller 322 for providing a first video to a first package screen (not shown), and a second display controller 324 for providing - two video to a second Screen (not shown). In addition, the video wheel exits the port 3 for connection to an external screen 350. It should be noted that the dual screen electronic device 300 further includes a display wafer 330. The display unit 330 integrates a video adjustment unit 331 and an external display unit 332 therein. The video adjustment unit 331 is similar to +, Β in the first embodiment. a whole wafer 230, which is coupled between the PNAI-DI-0082-TW/0814-A42406TWF 11 201203094 350 and is used to adjust the resolution and scanning mode of the second video. The adjusted second video is output to the external screen 35A. In addition, the external display unit 332 is similar to the video transmission chip 216, and is coupled between the video adjustment unit 331 and the external screen 35A for receiving the adjusted second video from the video adjustment chip. The self-processing unit 312 receives the sound θ data and the control command, and outputs an audiovisual data output to the external screen 350. In addition, a digital phase locked loop and a timing controller (Tcon) can be disposed in the display chip 330 to adjust the timing of the second video to meet the HDMI output requirement. 2C is a schematic diagram of a dual screen electronic device 400 in accordance with a third embodiment of the present invention. The dual-screen electronic device 4 of the third embodiment is similar to the dual-screen electronic device 3 of the second embodiment, and includes a processing unit 402, a first display module 412, and a second display module 414. A buffer 440 and a video output port 418. The processing unit 422 includes a first display controller 422 for providing a first video to a first screen, and a second display controller 424 for providing a second view to a second Screen. In addition, the video output port 418 can be coupled to an external screen 450. The dual screen electronic device 4 of the present embodiment further includes a display wafer 430 similar to the second embodiment described above. The display chip 43 〇 ': a video adjustment unit 431 and an external display unit 432 are integrated therein: the video § peripheral unit 431 is connected between the second display controller 424 and the external screen 450 for adjusting the The resolution of the second video and the method of sweeping, and outputting the second video after s weeks. The external display unit is similar to the aforementioned external display unit 332', which is switched to the video adjustment
PNAI-DI-0082-TW/0814-A42406TWF 12 201203094 單元431與該外接螢幕450之間，用以自該視訊調整單元 431接收該外部視訊，並將調整後之該第二視訊輸出至該 外接螢幕。然而，與前述第二實施例不同之處在於，該顯 不晶片430耦接該第二顯示模組414(即耦接至該第二螢 幕），用以將該第二視訊直接輸出至該第二螢幕。 前述實施例中’皆採用將解析度調升的方法解決行動 電話内建螢幕與外接螢幕視訊解析度彼此不相容的問題。 然而，在一最佳實施例中，亦可採用其他作法。第2D圖 為依據本發明一第四實施例（最佳實施例）之一雙螢幕電子 裝置500之示意圖。第四實施例之雙螢幕電子装置5〇〇相 似於前述第一實施例之雙螢幕電子裝置2〇〇，包括一處理 單兀502、一第一顯示模組512、一第二顯示模組514、_ 視訊調整晶片530、一缓衝器540、一視訊傳輸晶片516及 一視訊輸出埠518。其中該處理單元5〇2包括一第—顯示 控制器522，用以提供一第一視訊至一第一螢幕（圖未示）； 以及一第二顯示控制器524,用以提供一第二視訊至一第 二螢幕（圖未示）。此外，該視訊輸出埠518可與一外部螢 幕550相連接。第四實施例之視訊調整晶片530相同於第 一實施例之視訊調整晶片230，耦接於該第二顯示控制器 524與該外接螢幕之間，用以調整該第二視訊之解析度及 掃也方式。然而，與前述第一實施例不同之處在於調整解 析度及掃描方式的流程。當該第二顯示控制器524提供具 有一尚解析度（1280x720)之該第二視訊，且該第二螢幕只 能顯示具有一低解析度（1024x600)之視訊時，該視訊調整 曰曰片530將β玄第一視訊從該高解析度調降(downscale)至該 PN AI-DI-0082-TW/0814-A42406TWF 13 201203094 低解析度。之後，該視訊調整晶片530調整該第二視訊之 掃描方式。舉例而言，若該外接螢幕550只能採用一水平 掃描方式之視訊，則該第二顯示控制器524會提供一水平 掃描的第二視訊到視訊調整晶片530，但因為該第二螢幕 只能採用一垂直掃描方式之視訊時，所以該視訊調整晶片 5 3 0會將該第二視訊之該水平掃描方式旋轉成該垂直掃描 方式，並將調整後之該第二視訊提供至該第二螢幕。相似 地，若外接螢幕550只能採用一垂直掃描方式之視訊，則 該第二顯示控制器524會提供垂直掃描的第二視訊到視訊 調整晶片530，但因為該第二螢幕只能採用一水平掃描方 式之視訊，所以該視訊調整晶片530會將該第二視訊之該 水平掃描方式旋轉成該垂直掃描方式，並將調整後之該第 二視訊提供至該第二螢幕。由於調降視訊解析度所涉及的 運算較調升視訊解析度來得簡單，並且此實施例中輸出至 外接螢幕550的是未經插補法等運算而失真的高解析度視 訊，因此此實施例相較於前述實施例而言為一較佳實施 例。此外，本實施例中亦可如同前述第二實施例一般，將 其中視訊調整晶片530與視訊傳輸晶片516整合於一顯示 晶片之中，由於其技術内容可參照前述實施例，故在此不 再贅述。 至此，本發明之雙螢幕電子裝置及其電子元件已以各 種實施例完整揭露如上，然而值得注意的是，熟悉本技藝 人士仍可將前述揭露之各種電子元件作各種形式之整合與 修改。舉例而言，在第2C圖所示之第三實施例中，可將緩 衝器440進一步與顯示晶片430整合於一單晶片系統 PNAI-DI-0082-TW/0814-A42406TWF 14 201203094 (system on chip)之中。再舉例而言，在第2d圖所示之第四 實施例中’可將-個至多個切換開_未示）配置於處理 單元502之第二顯示控制器524、視訊調整晶片53〇與視 訊傳輸晶片516三者之間，使得當該雙螢幕電子裝置_ 欲同時以三螢幕（第-、第二及外接㈣)顯示時，始開啟 該第二顯示控制器524與該視訊調整晶片53()間之連接， 故可在無須使用多螢幕顯示時達到節省功率之效果。 除了上述雙螢幕電子裝置及各種顯示晶片，本發明更 揭露-種同時在行動電子裝置之雙螢幕及外接螢幕上正 顯示晝面的方法。帛4圖為本發明之同時在電子裝置之雙 螢幕及外接螢幕上正確顯示畫面的方法流程圖。本發明之 方法係應祕-電子裝置，此處以第2A圖之雙螢幕電子 裝置200為例’下文將參照該實施例及其附圖說明本發明 之方法。該電子裝置包括—第一顯示控制器222，用 以提供-第-視訊至一第一螢幕；以及一第二顯示控制器 224’用以提供-第二視訊至一第二榮幕，本發明之同時在 電子裝置之雙螢幕及外接螢幕25q ±正確顯示晝面的方法 包括：在步驟S402中’調整該第二視訊之解析度；在步驟 S404中，調整該第二視訊之掃描方式；在步驟篇中， 以該第-螢幕顯示該第-視訊；在步驟s中，以該第二 螢幕顯示該第二視訊；在步驟S41()中，以該外接螢幕顯示 調整後之該第二視訊。 舉例而言，步驟S402可由視訊調整晶片23〇或53〇執 行。此時，步驟S402調整該第二視訊之解析度之步驟更包 括：當該第：顯示控制器提供具有—高解析度之視訊，且 PNAI-DI-0082-TW/0814-A42406TWF 1ς 201203094 該 、二螢幕只能顯示具有-低解析度之視 視訊從該高解析度調降（dow 、 整後之該第二視訊提供至該第Jft，，並將調 控制4供具有一低解析度之該第二視訊，且 只能顯不具有一高解析度之視訊時，將 1 解析度調升(啊1㈣高解析度’並將低 視訊提供至料接螢幕。 之該第- =例而言，步驟隨可由視訊調整晶片咖執行。此 時’步驟S4G4中調整該第二視訊之掃描方式 ί接二螢幕只能制—垂直掃財式之視訊，且該 卜接螢幕？、能_—水平掃財式整視料，將 垂直掃描方式旋轉成該水平掃描方式，並將娜後 第一視讀供至該外接螢幕；當該第二螢幕只能採用 一水平掃描方式之視訊，且該外接螢幕只能制—垂 描方式之視訊時，將該第二視訊之該水平掃描方式旋轉成 =直掃描方式，並將調整後之該第二視訊提供至該外= 然而，步驟S404亦可由視訊調整晶片53〇執行。此 步驟S4G4中調整該第二視訊之掃描方式之步驟更包括：告 該第二螢幕只能採用—垂直掃描方式之視訊，且該外接二 幕只能採用-水平掃描方式整視料，將該第二視訊之 水平掃描方式旋轉成該垂直掃描方式，並將調整後之^ 二視訊提供至該第二螢幕；以及#該第二螢幕只能採用一 水平掃描方叙視訊，且料接⑽只能制—垂 方式之視訊時，該視訊調整晶片將該第二視訊之該垂直^ PNAI-DI-0082-TW/08J4-A42406TWF 16 201203094 描方式旋轉成該水平掃描方式，並將調整後之該第二視訊 提供至該第二螢幕。 本發明雖以較佳實施例揭露如上，然其並非用以限定 本發明的範圍，任何熟習此項技藝者，在不脫離本發明之 精神和範圍内，當可做些許的更動與潤飾，因此本發明之 保護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 第1圖為習知具有HDMI輸出之雙螢幕行動電話100。 第2A圖為依據本發明一第一實施例之一雙螢幕電子 裝置200之示意圖。 第2B圖為依據本發明一第二實施例之一雙螢幕電子 裝置300之示意圖。 第2C圖為依據本發明一第三實施例之一雙螢幕電子 裝置400之示意圖。 第2D圖為依據本發明一第四實施例之一雙螢幕電子 裝置500之示意圖。 第3A、3B圖分別為行動電話上肖相模式或全景模式 及其掃描方式之不意圖。 第3C圖為電視上之掃描方式示意圖。 第4圖為本發明之同時在電子裝置之雙螢幕及外接螢 幕上正確顯示晝面的方法流程圖。 【主要元件符號說明】 1〇〇〜雙螢幕行動電話； PNAI-DI-0082-TW/0814-A42406TWF 17 201203094 102〜中央處理器； 104〜記憶體； 106〜電源管理晶片； 108〜射頻晶片， 112〜第'一液晶顯不面板， 114〜第二液晶顯示面板； 116〜HDMI傳輸晶片； 118〜HDMI輸出埠； 202〜處理單元； · 204〜記憶體； 206〜電源管理晶片； 208〜射頻晶片； 212〜第一顯示模組； 214〜第二顯示模組； 230〜視訊調整晶片； 240〜緩衝器； 216〜視訊傳輸晶片； · 218〜視訊輸出埠； 250〜外接螢幕； 300〜雙螢幕電子裝置； 302〜處理單元； 312〜第一顯示模組； 314〜第二顯示模組； 340〜緩衝器； 318〜視訊輸出埠； PNAI-DI-0082-TW/0814-A42406TWF 18 201203094 322〜第一顯示控制器； 324〜第二顯示控制器； 330〜顯不晶片， 331〜視訊調整單元； 332〜外接顯示單元； 350〜外接螢幕； 400〜雙螢幕電子裝置； 402〜處理單元； • 412〜第一顯示模組； 414〜第二顯示模組； 440〜緩衝器； 418〜視訊輸出埠； 422第一顯示控制器； 424〜第二顯示控制器； 430〜顯不晶片， 431〜視訊調整單元； • 432〜外接顯示單元； 450〜外接螢幕； 500〜雙螢幕電子裝置； 502〜處理單元； 512〜第一顯示模組； 514〜第二顯示模組； 530〜視訊調整晶片； 540〜緩衝器； 516〜視訊傳輸晶片， PNAI-DI-0082-TW/0814-A42406TWF 19 201203094 518〜視訊輸出埠； 522〜第一顯示控制器； 524〜第二顯示控制器； 550〜外接螢幕。PNAI-DI-0082-TW/0814-A42406TWF 12 201203094 The unit 431 and the external screen 450 are configured to receive the external video from the video adjustment unit 431, and output the adjusted second video to the external screen. . The difference from the foregoing second embodiment is that the display chip 430 is coupled to the second display module 414 (ie, coupled to the second screen) for outputting the second video directly to the first Two screens. In the foregoing embodiments, the method of increasing the resolution is used to solve the problem that the mobile phone built-in screen and the external screen video resolution are incompatible with each other. However, in a preferred embodiment, other approaches may be employed. Figure 2D is a schematic illustration of a dual screen electronic device 500 in accordance with a fourth embodiment (best embodiment) of the present invention. The dual-screen electronic device 5 of the fourth embodiment is similar to the dual-screen electronic device 2 of the first embodiment, and includes a processing unit 502, a first display module 512, and a second display module 514. _ Video adjustment chip 530, a buffer 540, a video transmission chip 516, and a video output port 518. The processing unit 520 includes a first display controller 522 for providing a first video to a first screen (not shown), and a second display controller 524 for providing a second video. To a second screen (not shown). Additionally, the video output port 518 can be coupled to an external screen 550. The video adjustment chip 530 of the fourth embodiment is the same as the video adjustment chip 230 of the first embodiment, and is coupled between the second display controller 524 and the external screen for adjusting the resolution and scanning of the second video. Also the way. However, the difference from the foregoing first embodiment lies in the flow of adjusting the degree of resolution and the scanning method. When the second display controller 524 provides the second video with a resolution (1280x720), and the second screen can only display video with a low resolution (1024x600), the video adjustment chip 530 The β-Xuan first video is downscaled from the high resolution to the PN AI-DI-0082-TW/0814-A42406TWF 13 201203094 low resolution. Thereafter, the video adjustment chip 530 adjusts the scanning mode of the second video. For example, if the external screen 550 can only use a horizontal scanning mode of video, the second display controller 524 provides a horizontally scanned second video to video adjustment chip 530, but because the second screen can only When the video is scanned in a vertical scanning mode, the video adjustment chip 530 rotates the horizontal scanning mode of the second video into the vertical scanning mode, and the adjusted second video is provided to the second screen. . Similarly, if the external screen 550 can only use a vertical scanning mode of video, the second display controller 524 provides a vertical scanning second video to video adjustment chip 530, but since the second screen can only adopt a level Scanning mode video, the video adjustment chip 530 will rotate the horizontal scanning mode of the second video to the vertical scanning mode, and provide the adjusted second video to the second screen. Since the operation involved in down-converting the video resolution is simpler than the resolution of the video, and the output to the external screen 550 in this embodiment is a high-resolution video that is distorted without interpolation or the like, the embodiment is A preferred embodiment is compared to the previous embodiment. In this embodiment, the video adjustment chip 530 and the video transmission chip 516 can be integrated into a display chip as in the foregoing second embodiment. Since the technical content can refer to the foregoing embodiment, it is no longer Narration. To this end, the dual-screen electronic device of the present invention and its electronic components have been fully disclosed in the above embodiments, but it is noted that those skilled in the art can still integrate and modify the various electronic components disclosed above in various forms. For example, in the third embodiment shown in FIG. 2C, the buffer 440 can be further integrated with the display wafer 430 in a single-chip system PNAI-DI-0082-TW/0814-A42406TWF 14 201203094 (system on chip Among them. For example, in the fourth embodiment shown in FIG. 2d, 'the one or more switches can be turned off _ not shown.> The second display controller 524, the video adjustment chip 53 and the video are disposed in the processing unit 502. Between the three transmission chips 516, when the dual screen electronic device is to be simultaneously displayed on the three screens (the first, second, and external (four)), the second display controller 524 and the video adjustment chip 53 are turned on ( The connection between the two can save power when there is no need to use multi-screen display. In addition to the above dual-screen electronic devices and various display chips, the present invention further discloses a method of simultaneously displaying a kneading surface on a dual screen and an external screen of a mobile electronic device. Figure 4 is a flow chart of a method for correctly displaying a picture on a dual screen and an external screen of an electronic device in the present invention. The method of the present invention is an electronic device, here taking the dual screen electronic device 200 of Fig. 2A as an example. The method of the present invention will be described hereinafter with reference to the embodiment and the accompanying drawings. The electronic device includes a first display controller 222 for providing - video-to-first screen; and a second display controller 224' for providing - second video to a second screen, the present invention At the same time, the method of correctly displaying the face on the dual screen and the external screen 25q of the electronic device includes: 'adjusting the resolution of the second video in step S402; adjusting the scanning mode of the second video in step S404; In the step, the first video is displayed on the first screen; in the step s, the second video is displayed on the second screen; in the step S41 (), the adjusted second video is displayed on the external screen. . For example, step S402 can be performed by the video adjustment chip 23 or 53. At this time, the step of adjusting the resolution of the second video in step S402 further includes: when the first: display controller provides video with high resolution, and PNAI-DI-0082-TW/0814-A42406TWF 1ς 201203094 The second screen can only display the video with low resolution from the high resolution (dow, the second video is provided to the Jft, and the control 4 is provided for a low resolution) The second video, and can only show a high resolution video, the 1 resolution is raised (ah 1 (four) high resolution ' and the low video is provided to the material screen. The first - = example, The step can be performed by the video adjustment chip coffee. At this time, the scanning method of the second video is adjusted in step S4G4, and the second screen can only be used for the vertical scanning type video, and the screen is connected to the screen, and can be horizontally scanned. For the financial system, the vertical scanning mode is rotated into the horizontal scanning mode, and the first viewing of the image is supplied to the external screen; when the second screen can only use a horizontal scanning mode, the external screen Can only be made - when scanning video, The horizontal scanning mode of the second video is rotated to a direct scanning mode, and the adjusted second video is provided to the outside. However, step S404 can also be performed by the video adjustment chip 53. This step is adjusted in step S4G4. The steps of the scanning method of the second video further include: the second screen can only adopt the video of the vertical scanning mode, and the external two channels can only use the horizontal scanning method to view the material, and the horizontal scanning mode of the second video is used. Rotating into the vertical scanning mode, and providing the adjusted second video to the second screen; and # the second screen can only use one horizontal scanning side video, and the material connection (10) can only make the vertical video The video adjustment chip rotates the vertical PNAI-DI-0082-TW/08J4-A42406TWF 16 201203094 mode of the second video to the horizontal scanning mode, and provides the adjusted second video to the first The present invention is not limited to the scope of the present invention, and may be made without departing from the spirit and scope of the present invention. The scope of protection of the present invention is defined by the scope of the appended claims. [Simplified Schematic] FIG. 1 is a dual-screen mobile phone 100 having an HDMI output. 2 is a schematic diagram of a dual screen electronic device 200 according to a second embodiment of the present invention. FIG. 2B is a schematic diagram of a dual screen electronic device 300 according to a second embodiment of the present invention. A schematic diagram of a dual screen electronic device 400 according to a third embodiment. Fig. 2D is a schematic diagram of a dual screen electronic device 500 according to a fourth embodiment of the present invention. Figs. 3A and 3B are respectively a schematic mode on a mobile phone or The panorama mode and its scanning method are not intended. Figure 3C is a schematic diagram of the scanning method on the television. Fig. 4 is a flow chart showing the method of correctly displaying the kneading surface on the dual screen of the electronic device and the external screen at the same time. [Main component symbol description] 1〇〇~double screen mobile phone; PNAI-DI-0082-TW/0814-A42406TWF 17 201203094 102~ central processor; 104~memory; 106~power management chip; 108~RF chip, 112~1' LCD display panel, 114~2nd LCD panel; 116~HDMI transfer chip; 118~HDMI output port; 202~ processing unit; · 204~ memory; 206~ power management chip; 208~RF Chip; 212~first display module; 214~second display module; 230~video adjustment chip; 240~buffer; 216~video transmission chip; ·218~video output port; 250~external screen; 300~double Screen electronic device; 302~ processing unit; 312~first display module; 314~second display module; 340~buffer; 318~video output port; PNAI-DI-0082-TW/0814-A42406TWF 18 201203094 322 ~ first display controller; 324 ~ second display controller; 330 ~ display chip, 331 ~ video adjustment unit; 332 ~ external display unit; 350 ~ external screen; 400 ~ dual screen electronic device; 412~first display module; 414~second display module; 440~buffer; 418~video output port; 422 first display controller; 424~second display controller; 430~ display chip 431~video adjustment unit; 432~external display unit; 450~external screen; 500~dual screen electronic device; 502~processing unit; 512~first display module; 514~second display module; 530~video Adjusting the wafer; 540~buffer; 516~video transmission chip, PNAI-DI-0082-TW/0814-A42406TWF 19 201203094 518~video output 埠; 522~first display controller; 524~second display controller; 550 ~ External screen.
PNAI-DI-0082-TW/0814-A42406TWF 20PNAI-DI-0082-TW/0814-A42406TWF 20