200818887 九、發明說明： 【發明所屬之技術領域】 種視頻切換技術，更詳而言之，係有關於一種應用 於具有複數個視頻輸入端子的顯示裝置之視頻切換系統以 及方法。 【先前技術】 曰Ik著視㈣技的進步，許多家電或顯示器製造薇商為 提高消費者的視訊生活品質，紛紛提供大尺寸的電視等顯 7Γ二產加供肩費者選擇。以往3〇叶的榮幕已經難以滿足現 費者的需求，40忖、50忖以上的顯示器已成為消費者 購買、、.内入考里的選項。大尺寸的顯示器可以呈現更逼真 的觀賞情境，藉以提升消費者的生活品味與休閒樂趣。除 顯不器外，消費者使用如LCD等投料備呈現大晝面的影 像效果也逐漸音遍，特別是投影設備更是公司企業等公眾 環境呈現大影像畫面的解決方案。 : 前述之顯示器或投影設備可以透過如AV端子、§端 子、色差端子、VGA、DVI等視頻訊號輸入端子，盘外部 的視頻裝置，如DVD播放器、數位電視機上盒、電視遊 樂器、電腦主機、網路連接器、數位攝影機、數位靜態照 相機、、錄放影機等，相互連接，藉以將該些視頻裝置所產 生的視頻訊號透過該顯示器予以呈現。 為求能夠相容多個相同或不同的視頻及/或音頻裝 置，故現今的顯示器或投影設備多設置有複數個相同及/ 或不同視頻格式的訊號輸入端子。惟過多的輪入端子常會 19726 5 200818887 .•令使用者不知道哪一個端子是顯示器中預設的何一視訊頻 道，使用者必須逐一切換尋找才能確認哪一個視訊頻道有 播放的視頻訊號，相當不便。 另一方面，目前的顯示器僅能被動的接收外部視頻裝 置所產生的視頻訊號，若未將該顯示器的視訊頻道予以切 換，則無法觀賞或聆聽該外部視頻裝置所產生的視頻訊 號，同樣造成相當的不便。 ' r 綜上所述，如何能夠提供一種能判斷輸入的不同外部 i視頻訊號與當前播放之視頻訊號的優先權，並依據該優先 推切換或保留當前所呈現的視頻訊號，藉以增加視頻訊號 瀏覽時的便利性，遂成為目前亟待解決的課題。、〜 【發明内容】 為解決前述習知技術的缺點，本發明提供一種能判斷 輸入的不同外部視頻訊號與當前播放之視頻訊號的優先 權，並依據該優先權切換或保留當前所呈現的視頻訊號之 (視頻切換系統以及方法。 儿 本發明之-種視頻切換系統，係應用於具有複數個积 :輸入端子的顯示裝置中’ #包括：儲存單元，係用以儲 存不同之視頻訊號格式所對應之播放優先權順序資料.判 係用以_是否有外部視頻訊號透過該視頻輸入 :::二至該顯示裝置’並於偵測到有外部視頻訊號透過 ==子輸入至該顯示裝置時，確認該外部視頻訊 ;=: t:先權設定模組’係用以於該判斷模組於 、、 卜邛視頻讯唬透過该視頻輸入端子輸入至該顯示 19726 6 200818887 3置2?:::部視頻訊號之視訊格式時，判斷該顯 不衣置正錢衫他視頻減， ，視頻訊號之切換;若否，則令該顯示裝置 二號，以及切換模組，係用以於使用者依據該優先 插,又疋板組之提示選擇切換視頻訊號時，進—步依據 放優先權藝龍_射卜部視頻訊毅μ優先杏;;播 放之視頻訊號的視訊格式，若為㈣當前播放之^鮮200818887 IX. Description of the Invention: [Technical Field of the Invention] A video switching technique, more particularly, relates to a video switching system and method for a display device having a plurality of video input terminals. [Prior Art] 曰Ik's progress in (4) technology, many home appliances or display manufacturers to improve the quality of video life of consumers, have provided large-size TV and other products to choose from. In the past, the curtains of the 3 〇 leaves have been difficult to meet the needs of the consumers. The 40 忖 and 50 显示器 displays have become the option for consumers to purchase and enter the exam. The large-sized display can present a more realistic viewing environment to enhance the consumer's lifestyle and leisure. In addition to the display device, the use of images such as LCDs to display large-format images has gradually become more and more popular. In particular, projection devices are solutions for large-format images in public environments such as corporate companies. : The aforementioned display or projection device can pass video signal input terminals such as AV terminal, § terminal, color difference terminal, VGA, DVI, etc., video devices external to the disk, such as DVD players, digital TV sets, video games, computers A host computer, a network connector, a digital camera, a digital still camera, a video recorder, and the like are connected to each other, whereby the video signals generated by the video devices are presented through the display. In order to be compatible with a plurality of identical or different video and/or audio devices, today's displays or projection devices are provided with a plurality of signal input terminals of the same and/or different video formats. However, too many wheeled terminals will often be 19726 5 200818887. • The user does not know which terminal is the default video channel in the display. Users must switch to find one video channel to confirm which video channel is playing. inconvenient. On the other hand, the current display can only passively receive the video signal generated by the external video device. If the video channel of the display is not switched, the video signal generated by the external video device cannot be viewed or listened to, which is equivalent to Inconvenience. In summary, how can we provide a priority for judging the input of different external i video signals and the currently playing video signal, and switching or retaining the currently presented video signal according to the priority push, thereby increasing the video signal browsing. The convenience of time has become an urgent issue to be solved. In order to solve the shortcomings of the prior art, the present invention provides a priority for judging the input of different external video signals and the currently playing video signal, and switching or retaining the currently presented video according to the priority. Video switching system and method. The video switching system of the present invention is applied to a display device having a plurality of products: input terminals. #包括: A storage unit is used to store different video signal formats. The corresponding playback priority sequence data is used to determine whether an external video signal is input through the video:::2 to the display device' and when an external video signal is detected through the == sub-input to the display device The external video message is confirmed; =: t: the first power setting module is used for the determining module, and the video signal is input to the display through the video input terminal. 19726 6 200818887 3 Set 2?: :: When the video format of the video signal is used, it is judged that the video is switched, and the video signal is switched; if not, the display device is numbered 2, and The replacement module is used for the user to select a switching video signal according to the priority insertion and the prompt of the seesaw group, and the step is based on the priority of the eLong _ 卜 部 视频 视频 优先 优先 优先 优先; The video format of the signal, if it is (4) the current playback
的視㈣式，則將當前播放之視頻訊號切換成該外部視頻 ㈣，若非㈣當前播放之視頻訊號的視訊格式，則提示 是否確^將當前播放之視頻訊號切換成該外部視頻訊號， 俾經使用者確定後，予以切換。 本發明之一種視頻切換方法，透過前述本發明之一種 視頻切換系統，所執行之步驟包括：⑴建立用以儲存不 同之視頻訊號格搞對叙播放優先權順序資料的儲存單 兀’（2)當制到有外部視頻訊號透過該視頻輸入端子輸 入至該顯示裝置時’確認該外部視頻訊號之視訊格式，·⑶ 判斷該顯示裝置當前是否正在播放其他視頻訊號，若是， 則提示是否進行視頻訊號之切換並進至步驟（4);若否， 則令該顯示裝置播放該外部視頻訊號並結束該視頻切換方 法’（4 )於使用者依據該提示選擇切換視頻訊號時，進一 步㈣㈣放優先權順序資料騎該外部視頻訊號是否為 優先當前播放之視頻訊號的視訊格式，若為優先當前播放 ，視頻訊號的視訊格式’則將當前播放之視頻訊號切換成 «亥外。卩視頻机唬，若非優先當前播放之視頻訊號的視訊格 7 19726 200818887 •式，則提示是否確定將當前播放之視頻訊號切換成該外部 視頻訊號，俾經使用者確定後，予以切換。 相較於習知的視頻切換技術，本發明之視頻切換系統 以及方法，透過前述儲存單元、判斷模組、優先權設定模 組以及切換模組間之相互運作’藉以實現能判斷輸入的不 同外部視頻訊號與當前播放之視頻訊號的優Μ，並依據 該優先權切換或保留當前所呈現的視頻訊號的功效。豕 【實施方式】 以下係藉由特定的具體實施例說明本發明之實施方 悉此技藝之人士可由本說明書所揭示之内容輕易地 ==其他優點與功效。本發明亦可藉由其他不同 ㈣加以施行或應用，本說明書中的各項 可基於不_點與應用，在不㈣本發明 種修飾與變更。 3作卜進订各 =閱Γ圖，其係本發明之視頻切換系統的應用架 構示意圖。於本實施例中 用於顯示裝置2中。該顯 裔、液晶顯示器或電漿顯 複數個視頻輪入端子22， 為實現影像聲音顯示與播 單元等其他的功能模組， 在’故不予為文贅述之。 端子、S端子、色差端子 矾號輸入端子所組成用以 本發明之視頻切換系統1係應 不裝置2可例如為冷陰極管顯示 示器等，該顯示裝置2至少具有 須特別說明者，係該顯示裝置2 放之功能，實際上復具有如揚聲 然為突顯本發明之技術特徵所 該視頻輸入端子22係選自由Αν 、VGA、DVI、同軸纜線等視頻 接收各種不同格式之視頻訊號的 19726 8 200818887 視頻輸入端子。 如圖所示，本發明之視頻切換系統】包 11、判斷模組12、優先權外—伊4 ，、 儲存早元 該儲存單元11# :)二3以及切換模組〗4。 處, ，、用U儲存不同之視頻訊號格式所斜 心之播放優先權順序資料。 本 、 可例如為電子 /於本^例中’ _存單元n Γ重覆抹寫之非揮發記憶體，藉以將所設定之 言放m序有的視頻訊號格式資料予以儲存。舉例而 子;^Λ—優先權、D VI端子㈣：優先權、 四優先順位，/二‘先推、有線電視同軸纜線端子具有第 輸 、U類推’亦即只要透過該視頻輸人端子22 韻3入至该頭示裝晉9 ^ 與該顯示裳置2當1所播:訊號的優先權，即可決定 外邛視槠 田月’ 之視頻訊號格式相較，特定之 視頻^ 否會導致當前之視頻訊號被切換成該外部 \至於切換視頻訊號之具體技術手段請容後詳述。 节視^斷权組12係用以债測是否有外部視頻訊號透過 i視^端子22輸入至該顯示裝置2,並於偵測到有外 日士 Ά就透過該視頻輸入端子22輸入至該顯示裝置2 ^確認該外部視頻訊號之視訊格式。承前所述，不同之 透、^就格式對應有不同之播放優先權順序，因此，必須 示^^斷模組12制是否有外部視頻訊號輸入至該顯 定 2並於该顯不裝置2之視頻輸入端子22接收到特 訊;^ ^ Λ破電壓日卞’必須予以確認該外部視頻訊號之視 、俾確疋其播放優先權順序，於本實施例中，該判 19726 9 200818887 •斷模組係可透過偵測該輸入之視頻訊號的雜訊位準（Nc)ise Level)以確認該外部視頻訊號之視訊格式。 刻憂先榷Μ模組13係用以於該判斷模組匕於 =有外部視頻訊號透過該視頻輪入料22輸入至該顯示 裝置2，且已確認該外部視頻訊號之視訊格式時，判斷該 顯示裝置2當前是否正在播放其他視頻訊號，若是，則提 示是否進行視頻訊號之切換；若否，則令該顯示裝置2播 放該外部視頻訊號。 〇 承前所述，於本實施例中，假設該顯示裝置2當前係 播放透過該有線電視同軸I線所接收到的有線電視視頻訊 號，則一旦有其他外部視頻輸入端子22接收到如前述色差 端子、DVI端子或VGA端子等其他的視頻訊號時，該優 先權設定模組U即會做出該顯示裝置2正在播放其他視頻 訊號之_ ’並提示是否進行視頻訊號之切換的訊息，該 訊息可例如為顯示於該顯示裂置2之榮幕上的訊息（〇n ί SCreen DiSplay，〇SD)。另一方面，假設該顯示裝置2當前 並未播放任何視頻訊號，則一旦有視頻輸入端子22接收到 如W述色差端子、DVI端子或VGA端子等外部視頻訊號 時’該優先權設定模組13即會驅動該顯示裝置2播放該視 頻輸入端子2 2接收到的外部視頻訊號。該驅動方式可例如 為啟動該顯示裝置2之電源並將視頻訊號輸入模式切換到 有外部視頻訊號輸入之相對應視頻輸入端子22。 此外’该優先權設定模組13復能用以設定該視頻訊 號播放之優先權。具體而言，該優先權設定模組丨3能提供 19726 10 200818887 一優先權清單設定介面，該介面可例如為使用者圖形介 面，當使用者透過該優先權清單設定介面設定不同視頻輸 入端子22播放之優先權後，該優先權設定模組13隨即將 该播放優先權順序資料儲存至該儲存單元丨〗中，若該儲存 早兀11預先儲存有播放優先權順序資料則在使用者確認 覆蓋後，以新_放優先權順序:#料取代該預先儲存的播 放優先權順序資料。 該切換模組14係用以於使用者依據該優先權設定模 組之提示選擇切換視頻訊號時，進—步依據該播放優先權 順序貧料判斷該外部視頻訊號是否為優先當前播放之視頻 訊號的視訊格式’若為優先#前減之視頻訊號的視訊格 式，則將當前播放之視頻訊號切換成該外部視頻訊號；若 非優先當前播放之視頻喊的視訊格式，則提示是否確定 將田别播放之仙訊號切換成該外部視頻訊號，俾經使用 者確定後，予以切換。 $則所述’於本實施例巾，於使用者依據該切換模組 14之提不確疋將當前播放之視頻訊號切換成該外部視頻 訊號時，㈣先權設定漁12則㈣輸人 訊 之優先權取代當前播放之視頻訊號之㈣權，並進-步Γ 新的播放k先權順序貧料取代該預先儲存於該儲存單元 11中的播放優先權順序資料 料《2圖，其係本發明之視頻切換方法，透過前 明之視頻切換系統，於執行時之流程圖。如圖所示， 於步驟S201中，建☆田 口 I 丁 用以儲存不同之視頻訊號格式所對 19726 11 200818887 元。接著進至步驟 應之播放優先權順序資料的儲存單 S202 〇 於步驟S202中，俏淛e石各， & 、、 有外部視頻訊號透過該視 須輸入螭子輸入至該顯示裝 芒否，目I丨舌、—^ 夏右疋，則進至步驟S203 ; 右否，則重稷執行步驟S2〇2。 於步驟S203中，確認該外部 接著進至步驟S204。 卩視頻心虎之視訊格式。 =驟S204中’判斷該顯示裝置當前是否正在播放 ^ S206 〇 J進至4S2〇5,若否，則進至步 於步驟S205中，提示是否進行視頻訊號之切換，並 進至步驟S207。 於步驟S206中，令該顯示農置播放該外部視頻訊號。 於步驟S207中，於使用者依據該提示選擇切換視頻 心虎時’進—步依據該播放優先權順序資料判斷該外部視 :訊^否為優先當前播放之視頻訊號的視訊格式，若為 1憂先當前播放之視頻訊號的視訊格式，則進至步驟S208 ; 右非優先當前播放之視頻訊號的視訊格式，則進至步驟 S209 〇 、 ;v驟S208中，令该頒示裝置將當前播放之視頻訊 號切換成該外部視頻訊號並予以播放。 於步驟S209中，提示是否確定將當前播放之視頻訊 5虎切換成該外部視頻訊號。接著進至步驟S210。 於步驟S 210中’經使用者依據該提示確定後，將當 19726 12 2U0818887 頻訊號。接著進至步驟 ;;播放之視頻訊號切換成該外部視 於步驟S 211中，將該夕卜邻^ 前播放之视頻訊號之優先權。接著之優先權取代當 預先儲存於該儲存中單元了二播^優先權順序資料取代該 請泉…： 優先權順序資料。 述本發明：二二其係本發明之視頻切換方法，透過前 優先權時㈣㈣。 、執仃w該視頻訊號播放之 介面，：：：於步驟S301中，提供-優先權清單設定 S302。μ面可例如為使用者圖形介面。接著進至步驟 =驟讀中，透過該優先權清單設定介面設 门視頻輸入端子播放之優先權。接著進至步驟削。 〆 於步驟S 3 0 3中，將兮播说版斗』a 儲存單元卜”序資料儲存至該 川音皮-、 該儲存早兀預先儲存有播放優先權 :=ΤΓ確認覆蓋後，則以新的播放優先權順 序貝枓取代該預先儲存_放優先權順序資料。 ，上所述，本發明之視頻切換系統以及方法，透過前 =存早7C、判斷模組、優先權設定模組以及切換模組間 2互運作、’藉以實現能判斷輸入的不同外部視頻訊號與 田别播放之視頻訊號的優先權，並依據該優先權切換或保 留當前所呈現的視頻訊號的功效。 / ” 上述貝施例僅為例示性說明本發明之原理及其功 19726 13 .200818887 •效而非用於限制本發明。任何熟習此項技藝之人士岣可 在不延背本發明之精神及範疇下，對上述實施例進行修飾 曼化因此，本發明之權利保護範圍，應如後述之申於 專利範圍所列。 月 【圖式簡單說明】 第1圖係本發明之視頻切換系統的應用架構示意圖； 第2圖係本發明之視頻切換方法，透過前述本發明之 視頻切換系統，於執行時之流程圖；以及 第3圖係本發明之視頻切換方法，透過前述本發明之 視頻切換系統，於執行設定該視頻訊號播放之優先權時的 流程圖。 【主要元件符號說明】 1 視頻切換系統 11 儲存單元 12 判斷模組 13 優先權設定模組 • 14 切換模組 2 顯示裝置 22 視頻輸入端子 S201〜S212步驟 S301〜S303步驟 14 19726The video (4) type switches the currently played video signal to the external video (4). If it is not (4) the video format of the currently played video signal, it prompts whether or not the current video signal is switched to the external video signal. After the user determines it, switch it. In the video switching method of the present invention, the steps performed by the video switching system of the present invention include: (1) establishing a storage unit for storing different video signal grids for playing the priority sequence data of the playback sequence (2) When the external video signal is input to the display device through the video input terminal, 'confirm the video format of the external video signal, (3) determine whether the display device is currently playing other video signals, and if so, whether to perform the video signal Switching to step (4); if not, causing the display device to play the external video signal and ending the video switching method '(4) when the user selects to switch the video signal according to the prompt, further (4) (4) put priority order Whether the data riding the external video signal is the video format of the video signal that is currently played, if the priority is currently playing, the video format of the video signal will switch the currently playing video signal to «outside.卩Video machine 唬, if it is not the priority of the video signal currently playing 7 7726 200818887 •, it prompts whether to determine to switch the currently playing video signal to the external video signal, and then switch after the user determines. Compared with the conventional video switching technology, the video switching system and method of the present invention can realize the different externalities of the input through the mutual operation of the storage unit, the determining module, the priority setting module and the switching module. The video signal is superior to the currently played video signal, and switches or retains the effect of the currently presented video signal according to the priority. [Embodiment] The following is a description of the embodiments of the present invention by way of specific embodiments. Those skilled in the art can readily <RTIgt; The present invention can also be implemented or applied by other different means. The items in the present specification can be modified and changed according to the present invention based on the non-points and applications. 3 is a booklet, which is a schematic diagram of an application architecture of the video switching system of the present invention. It is used in the display device 2 in this embodiment. The display, the liquid crystal display or the plasma display a plurality of video wheel-in terminals 22, and other functional modules such as video and audio display and broadcast units are not described in the text. The video switching system 1 of the present invention is composed of a terminal, an S terminal, and a color difference terminal. The video switching system 1 can be, for example, a cold cathode tube display or the like. The display device 2 has at least a special description. The function of the display device 2 is actually a function of highlighting the technical features of the present invention. The video input terminal 22 is selected from video signals of various formats such as Αν, VGA, DVI, coaxial cable, and the like. 19726 8 200818887 Video input terminal. As shown in the figure, the video switching system of the present invention includes a packet 11, a judging module 12, a priority outer-I4, a storage early element storage unit 11#:) 2, and a switching module 4. At, ,, U, store the playback priority order data in the different video signal formats. This can be, for example, a non-volatile memory that is repeatedly erased by the electronic/in the example of the storage unit n, so as to store the video signal format data of the set m-order. For example: ^Λ—Priority, D VI terminal (4): priority, four priority order, / two 'first push, cable TV coaxial cable terminal has the first transmission, U type push', that is, as long as the video input terminal 22 Rhyme 3 into the head of the show Jin 9 ^ and the display of the set 2 when 1 broadcast: the priority of the signal, you can decide the video signal format of the outside 邛 槠 田月', the specific video ^ No This will cause the current video signal to be switched to the external one. The specific technical means for switching the video signal will be detailed later. The device 12 is used to determine whether an external video signal is input to the display device 2 through the terminal 22, and is input to the display device 22 through the video input terminal 22 The display device 2 ^ confirms the video format of the external video signal. As mentioned above, different formats of the transparent and corresponding formats have different playback priority sequences. Therefore, it is necessary to indicate whether the module 12 has an external video signal input to the display 2 and is in the display device 2 The video input terminal 22 receives the special message; ^ ^ 电压 电压 卞 必须 'must confirm the view of the external video signal, and determine its playback priority order, in this embodiment, the sentence 19726 9 200818887 • Broken mode The group can confirm the video format of the external video signal by detecting the noise level (Nc) level of the input video signal. The first module 13 is used to determine whether the external video signal is input to the display device 2 through the video wheel input 22 and the video format of the external video signal has been confirmed. Whether the display device 2 is currently playing other video signals, and if so, prompting whether to switch the video signal; if not, causing the display device 2 to play the external video signal. As described in the foregoing, in the present embodiment, it is assumed that the display device 2 currently plays the cable television video signal received through the cable coaxial I line, and if other external video input terminals 22 receive the color difference terminal as described above, When the other video signals, such as the DVI terminal or the VGA terminal, the priority setting module U will make a message that the display device 2 is playing another video signal and prompting whether to switch the video signal, the message may be For example, the message displayed on the screen of the display split 2 (〇n ί SCreen DiSplay, 〇 SD). On the other hand, if the display device 2 does not currently play any video signal, once the video input terminal 22 receives an external video signal such as a color difference terminal, a DVI terminal or a VGA terminal, the priority setting module 13 That is, the display device 2 is driven to play the external video signal received by the video input terminal 22. The driving mode can be, for example, to activate the power of the display device 2 and switch the video signal input mode to the corresponding video input terminal 22 having an external video signal input. In addition, the priority setting module 13 can be used to set the priority of the video signal playback. Specifically, the priority setting module 丨3 can provide a priority list setting interface of 19726 10 200818887, and the interface can be, for example, a user graphical interface, and the user sets different video input terminals 22 through the priority list setting interface. After the priority of the playback, the priority setting module 13 then stores the playback priority sequence data into the storage unit, and if the storage is pre-stored with the playback priority sequence data, the user confirms the coverage. After that, in the new _ priority order: # material replaces the pre-stored playback priority order data. The switching module 14 is configured to: when the user selects to switch the video signal according to the prompt of the priority setting module, determine whether the external video signal is the priority currently playing video signal according to the playback priority order. If the video format of the video signal of priority # is reduced, the currently played video signal is switched to the external video signal; if the video format of the currently played video is not prioritized, it is prompted whether it is determined to play the field. The signal of the fairy signal is switched to the external video signal, and is switched after being determined by the user. In the embodiment of the present invention, when the user switches the currently playing video signal to the external video signal according to the inaccuracy of the switching module 14, (4) the first right to set the fishing 12 (four) input information The priority replaces the (four) right of the currently playing video signal, and the new playback k first priority order is used to replace the playback priority order data material pre-stored in the storage unit 11 "2 map, which is The video switching method of the invention is implemented in the flow chart of the video switching system. As shown in the figure, in step S201, the ☆Tiankou I is used to store different video signal formats for the 19726 11 200818887 yuan. Then, proceeding to the storage order S202 of the playback priority order data in step S202, in step S202, the external video signal is input to the display device through the visual input input dice, If the object is slammed, -^ Xiayou, then go to step S203; if it is right, repeat step S2〇2. In step S203, it is confirmed that the external portion proceeds to step S204.卩 Video heart video format. In step S204, it is judged whether the display device is currently playing ^ S206 〇 J to 4S2 〇 5, and if no, the process proceeds to step S205 to prompt whether or not the video signal is switched, and the process proceeds to step S207. In step S206, the display farmer plays the external video signal. In step S207, when the user selects to switch the video heart tiger according to the prompt, the method further determines, according to the playback priority order data, the external video: whether the video is the video format of the currently played video signal, if 1 If the video format of the currently playing video signal is sorrowed, the process proceeds to step S208; if the right non-priority video format of the currently played video signal is forwarded, the process proceeds to step S209, vv, step S208, so that the issuing device will play the current broadcast. The video signal is switched to the external video signal and played. In step S209, it is prompted whether it is determined to switch the currently playing video message to the external video signal. Then it proceeds to step S210. In step S210, after the user determines according to the prompt, the frequency signal will be 19726 12 2U0818887. Then, the process proceeds to the step; the video signal to be played is switched to the external view in step S211, and the video signal played before the video is prioritized. Subsequent priority is substituted for the second broadcast when the unit is pre-stored in the storage unit. The priority order data replaces the request...: priority order data. The invention is described in the following: (2) The video switching method of the present invention is transmitted through the prior priority (4) (4). And executing the interface for playing the video signal, ::: In step S301, providing - priority list setting S302. The μ face can be, for example, a graphical user interface. Then proceed to step = skip, and set the priority of the interface video input terminal to play through the priority list. Then proceed to the step to cut. In step S3 0 3, the sequel to the slogan "a storage unit" is stored in the syllabus - the storage is pre-stored with the playback priority: = ΤΓ confirmation coverage, then new The playback priority sequence is replaced by the pre-storage _ priority priority data. As described above, the video switching system and method of the present invention are transmitted through the pre-storage 7C, the judgment module, the priority setting module, and the switching. The inter-modules 2 interoperate, 'to achieve the priority of the different external video signals that can be input and the video signals played by the field, and to switch or retain the effect of the currently presented video signals according to the priority. / ” The examples are merely illustrative of the principles of the invention and its work, and are not intended to limit the invention. Any person skilled in the art can modify the above embodiments without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be as described in the following patent claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an application architecture of a video switching system of the present invention; FIG. 2 is a flowchart of a video switching method of the present invention, which is executed during the execution of the video switching system of the present invention; Figure 3 is a flow chart of the video switching method of the present invention, through the video switching system of the present invention, when performing the priority of setting the video signal playback. [Main component symbol description] 1 Video switching system 11 Storage unit 12 Judgment module 13 Priority setting module • 14 Switching module 2 Display device 22 Video input terminal S201~S212 Steps S301~S303 Step 14 19726