1310652 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種防呆方法及其系統，且特別是有 關於—種應用於實物投影機之外部訊號偵測防呆方法及其 系統。 【先前技術】 • 習知最常見的簡報辅助設備，就是使用投影片的投影 機。隨著科技的進步，現在可使用的簡報輔助設備包含LCD 的投影機、筆記型電腦及實物投影機。 其中實物投影機（document camera)，可以不需要將欲 簡報的標的物（例如文件或物件）先製成電子式的影像檔或 文件檔，即可呈現標的物在投影螢幕上。將欲簡報的標的 物置於實物投影機上一數位式鏡頭的取像範圍内，直接將 拍攝的影像透過一投影單元呈現在投影螢幕上。因此，實 φ 物投影機可以減少簡報人員準備簡報資料所需的時間。 有習知的實物投影機設計兩種使用模式，即攝像模式 (camera m〇de)與外部主機模式（pe mQde)。攝像模式係將^ 投影顯示之物件置於上述取像範圍内，實物投影機上的擁 ^裝置棟取物件影像後經訊號處理步驟，再經由投影顯示 單元將影像撥放出。而外部主機模式則是藉由一訊號連接 線將實物投影機與外部主機如筆記型電腦相連，外部主機 之訊號便直接經由實物投影機及投影顯示單元將主機 資料撥放出。 / 然而，此種習知實物投影系統在使用上有一缺點，當 1310652 處於外部主機模式時，若磁格, 撥放J間外部主機與實物投影機 間之連結忽然中斷，例如外邮 你 主機Μ對實物投影機傳送 訊號，或者訊號連接線突铁鬆脫 _ 不大…'瓠脫，則顯不螢幕無法顯示任 何影像訊息’而此時使用者也無從判斷問題所在。 【發明内容】 因此本發月《目的就是在提供一種實物投影機之外 •冑訊號制防呆方法及其系統，藉由自動偵測-外部訊號 以致能（enaMe)或禁能（disable)實物投影機之外部訊號模 式。 本發明的另一目的是在提供一種實物投影機之外部訊 號债測防呆方法及其系統，用以當外部訊號對投影機之傳 輸中斷時，對使用者產生提示或指示功能。 ”根據本發明之上述目的，提出—種實物投影機之外部 訊號搞測防呆方法及其系統。外部訊號偵測防呆方法包括 φ #續_實物投職之外部讀之存在、以及判斷外部訊 號存在與否。當判斷為外部訊號存在時，致能外部訊號模 式，當判斷外部訊號不存在時，禁能外部訊號模式。 防呆方法更包含以下步驟或其組合：當外部訊號模式 被禁能時，若執行一切換至外部訊號模式之動作，則輸出 一禁能訊息。當禁能外部訊號模式時執行一指示動作，例 如輸出一選單訊號，以投影顯示出一模式選單，或者直接 切換至一替代模式。 本發明之另—態樣係為一種實物投影機外部訊號偵測 防呆系統，包括外部訊號端、訊號偵測電路、控制模組及 1310652 切換模組。外部訊號端用以接收來自外部裝置之外部訊 號，訊號偵測電路自動且持續偵測外部訊號端之輸入訊 號。控制模組接收來自訊號偵測電路之偵測訊號，並依據 偵測訊號判斷有無外部訊號輸入。 接收控制模組之判斷訊號，以致能或禁能外部訊號端 之訊號輸入。當外部訊號未輸入時，控制模組控制切換模 組禁能一外部訊號模式；當有外部訊號輸入時，控制模組 控制切換模組致能外部訊號模式。 依照本發明一較佳實施例，實物投影機之防呆系統包 括一内部訊號源、一第一外部訊號端、一第二外部訊號端、 一訊號偵測電路、一處理器以及一軔體。實物投影機並連 接一投影單元，以投影撥放出影像。 當第一外部訊號端接收來自一記憶卡或電腦之第一外 部訊號時，訊號偵測電路接收到此外部訊號，並將其傳送 到處理器。處理器判斷外部訊號之有無並發送判斷訊號給 軔體，以決定是否關閉第一外部訊號端之訊號傳輸，即禁 能第一訊號模式。 本發明藉由持續主動偵測外部訊號之有無，以致能或 禁Bb實物投影機之外部訊號模式，並設計一即時訊息回廡 機制，讓使用者可立即且正確得知系統目前之狀態。 【實施方式】 本發明揭露一種應用於實物投影機之外部訊號防呆指 不方法及系統。藉由偵測外部訊號作為一觸發模式致能之 判斷，讓使用者遇到外部訊號中斷之狀況時，可知曉狀況 1310652 發生之類型。於下所稱外部訊號模式泛指訊號是從外部裝 置如電腦主機、或者一外接式記憶卡裝置輸入實物投影機 時之模式。而以實物投影機之擷像裝置作為輸出影像來源 之模式稱攝像模式，其影像訊號稱内部訊號。 參照第1圖，其繪示依照本發明實物投影機之外部訊 號偵測防呆方法一較佳實施例的流程圖。實物投影機之外 部訊號偵測防呆方法主要包括：步驟102中，持續偵測實 • 物投影機之外部訊號之存在。可設定為偵測一外部主機如 電腦之訊號。 步驟104中，判斷外部訊號之存在與否。利用一處理 器接收經由訊號偵測電路而來之外部訊號，並判斷外部訊 號是否存在。 步驟l〇6a或l〇6b中，致能或禁能外部訊號模式。例 如當處理器判斷出外部訊號存在時，發出判斷訊號使軔體 致能外部訊號模式（步驟106a)。當偵測到外部訊號不存在 時，則發出另一種判斷訊號驅使軔體禁能外部訊號模式（步 驟 106b)。 且當外部訊號模式被禁能而不開啟時，若執行切換至 此被禁能之外部訊號模式，則輸出一代表無外部訊號輸入 之禁能訊號，藉由投影單元顯示出一禁能訊息，告知使用 者目前系統對於外部訊號之接收狀態。例如當未偵測到外 部訊號時，實物投影機内部處理器將控制軔體使此外部訊 號模式成為禁能狀態。當使用者按壓切換至外部訊號模式 之外。卩訊號模式按紐時，實物投影機之處理器便會輸出一 訊號，控制軔體透過投影單元顯示出如n〇 signal等字幕， 1310652 告知使用者此時無外部訊號輸入。 防呆方法更包含當禁能外部訊號模式時執行一指示 :(步驟108)’用以更為即時透露一外部訊號未輪入之訊 ^、°指示動作可依需求有多種呈現類型，例如處理器輸^ -選單訊號’以控制軔體藉由投影單元投影顯示出一模式 選單，提示使用者切換至其他訊號輸入模式。或者是二 軔體直接切換至預設之替代模式，即另外―訊號源模^， 例如内部影像訊號之模式。只要能藉由此特定動作以對外 告知目前無外部訊號輸入之訊息即可。 η參照帛2 ®，其繪示依照本發明之實物投影機外部訊 號價測防呆系統-較佳實施例的系統方塊圖。實物投影機 外部訊號偵測防呆系統200包括一外部訊號端2〇2&、二訊 號偵測電路206、一控制模組208及一切換模組21(^訊號 偵測電路206自動且持續偵測外部訊號端2〇2a之訊號輸入 狀態’並傳送一偵測訊號至控制模組2〇8。 控制模組208依據偵測訊號判斷有無外部訊號輸入， 控制模組208並於判斷後發出一判斷訊號通知切換模組 21〇，以致能或禁能實物投影機之外部訊號輸入模式。當無 外部訊號輸入時，控制模組208控制切換模組21〇關閉外 部訊遗模式。 於一較佳實施例中，實物投影機之防呆系統2〇〇包括 一内部訊號源204、一第一外部訊號端2〇2a、一第二外部 訊號端202b、一訊號偵測電路206、一控制模組2〇8、一切 換模組210。實物投影機系統最後之輸出訊號由一投影單元 212接收以投影撥放出影像。 1310652 第一外部訊號端202a與第二外部訊號端202b分別從 外部接收第一外部訊號與第二外部訊號，外部訊號端例如 為一 s己憶卡連接埠、或者一電腦信號連接埠，如VGA介面 之連接埠。内部訊號即為實物投影機本身之擷像裝置所產 生之訊號，經資料處理後之影像訊號。 當第一外部訊號端202a接收來自一外部裝置220，例 如電腦或一記憶卡之第一外部訊號時，訊號彳貞測電路206 會接收到此外部訊號，並將其傳送到控制模組2〇8如一處 理器。控制模組208依據外部訊號之有無，判斷須致能或 禁能第一外部訊號模式。 若判斷為第一外部訊號存在而須致能第一外部訊號模 式，則通知切換模組210致能第一外部訊號模式，使第一 外部訊號得以從第一外部訊號端202a輸入，最後自實物投 影機系統輸出到投影單元212。若判斷無外部訊號存在，則 控制切換模組210禁能第一外部訊號模式，較佳地，可設 計為自動切換至其它訊號模式，例如選擇輸出内部訊號源 2〇4之訊號。執行致能/禁能功能或模式切換的切換模組可 利用軔體達成。 外部訊號偵測防呆系統之另一實施例為，上述之第一 外部訊號端202a與第二外部訊號端2〇2b皆為接收記憶卡 訊號之連接埠。第一記憶卡與第二記憶卡個別插置於二連 接埠，且此二連接埠分別對應第一外部訊號模式與第二外 部訊號模式。當訊號模式處於第一外部訊號模式時，若第 一記憶卡鬆脫掉落，則控制模組2〇8將判斷出無第一外部 訊號，並通知切換模組210使其禁能第一外部訊號模式， 1310652 並自動切換成第二外部訊號模式，輸出第二記憶卡之資料。 雖上述實施例之訊號源包括二組外部訊號輸入埠及一 内部影像擷取單元，其並非限定本發明之應用，亦可依需 求有各種設計組合，例如只有一組外部訊號輸入埠、或者 超過二組以上之外部訊號輸入埠，皆包含於本發明之精神 與範圍内。 由上述本發明較佳實施例可知，應用本發明至少具有 下列優點。本發明藉由主動偵測外部訊號之方式，使得當 實物投影機之外部訊號輸入遭遇突然中斷時，能夠即時回 應一訊息給使用者，讓使用者直接獲得系統狀態之指示， 不會如同在使用習知實物投影機時，不易判斷應選擇何種 步驟排除問題，或只能以猜測、試誤方式找出問題點。因 此本發明提供使用者友善的使用介面，也強化了人機間的 互動性’更提升了產品的使用方便性。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限疋本發明’任何熟習此技藝者，在不脫離本發明之精神 和範圍内’當可作各種之更動與潤飾，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】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1圖係繪示依照本發明之實物投影機外部訊號偵測 防呆方法一較佳實施例的流程圖。 11 1310652 第2圖係繪示依照本發明之實物投影機外部訊號偵測 防呆系統一較佳實施例的系統方塊圖。 【主要元件符號說明】 102〜108步驟： :第—外部訊號端 内部訊號源 控制模組 投影單元 200:外部訊號偵測防呆系統202a 202b:第二外部訊號端 204:1310652 IX. Description of the Invention: [Technical Field] The present invention relates to a foolproof method and system thereof, and more particularly to an external signal detecting foolproof method and system thereof for use in a physical projector. [Prior Art] • The most common presentation aids are the projectors that use slides. As technology advances, the currently available presentation aids include LCD projectors, notebooks, and physical projectors. The document camera can display the object on the projection screen without first making the object (such as a document or an object) to be briefed into an electronic image file or file file. The object to be briefed is placed in the image capturing range of a digital lens on the physical projector, and the captured image is directly presented on the projection screen through a projection unit. Therefore, the real φ projector can reduce the time required for the briefing staff to prepare the presentation materials. There are two types of usage models known in the art, namely camera mode (camera m〇de) and external host mode (pe mQde). In the camera mode, the object displayed by the projection is placed in the above-mentioned image capturing range, and the image of the device on the object projector is subjected to the signal processing step, and then the image is played out through the projection display unit. In the external host mode, the physical projector is connected to an external host such as a notebook computer via a signal cable, and the external host signal directly dials the host data through the physical projector and the projection display unit. / However, this kind of conventional physical projection system has a disadvantage in use. When the 1310652 is in the external host mode, if the magnetic grid, the connection between the external host and the physical projector is suddenly interrupted, for example, the external mail host Μ Sending a signal to the physical projector, or the signal connection cable is loose. _ Not very big... 'It’s not clear that the screen cannot display any image message' and the user has no way to judge the problem. [Summary of the Invention] Therefore, the purpose of this month is to provide a kind of physical projector and the system and system for preventing it by means of automatic detection - external signal to enable (enaMe) or disable (disable) The external signal mode of the projector. Another object of the present invention is to provide an external signal debunking method and system for a physical projector for generating a prompt or indication function to a user when an external signal is interrupted to the projector. According to the above object of the present invention, a method for detecting an external signal of a physical projector and a system thereof are provided. The external signal detection and prevention method includes the presence of external reading of φ #Continue _ physical investment, and judging the external Whether the signal exists or not. When it is judged that the external signal exists, the external signal mode is enabled, and when it is judged that the external signal does not exist, the external signal mode is disabled. The method of preventing the stay includes the following steps or a combination thereof: when the external signal mode is banned When it is enabled, if a switch to the external signal mode is performed, a disable message is output. When the external signal mode is disabled, an indication action is performed, such as outputting a menu signal to project a mode menu, or directly switch The other aspect of the present invention is a physical projector external signal detection foolproof system, comprising an external signal terminal, a signal detection circuit, a control module and a 1310652 switching module. The external signal terminal is used for Receiving an external signal from an external device, the signal detection circuit automatically and continuously detects the input signal of the external signal terminal. The group receives the detection signal from the signal detection circuit and determines whether there is an external signal input according to the detection signal. Receives the judgment signal of the control module to enable or disable the signal input of the external signal terminal. When the external signal is not input, The control module controls the switching module to disable an external signal mode; when there is an external signal input, the control module controls the switching module to enable the external signal mode. According to a preferred embodiment of the present invention, the physical projector is in a foolproof system. The utility model comprises an internal signal source, a first external signal terminal, a second external signal terminal, a signal detecting circuit, a processor and a body. The physical projector is connected to a projection unit for projecting and releasing the image. When the first external signal terminal receives the first external signal from a memory card or a computer, the signal detecting circuit receives the external signal and transmits it to the processor. The processor determines whether the external signal is present or not and sends a determination signal to the 轫. Body, to determine whether to turn off the signal transmission of the first external signal end, that is, disable the first signal mode. The present invention continues by the main mode Detecting the presence or absence of external signals, so that the external signal mode of the Bb physical projector can be enabled or disabled, and an instant message feedback mechanism is designed to allow the user to immediately and correctly know the current state of the system. An external signal anti-staying method and system applied to a physical projector. By detecting an external signal as a trigger mode enabling judgment, the user can know that the situation 1310652 occurs when the user encounters an external signal interruption condition. Type: The external signal mode refers to the mode when the signal is input from an external device such as a computer host or an external memory card device, and the image device of the physical projector is used as the source of the output image. The image mode is called the internal signal. Referring to Figure 1, there is shown a flow chart of a preferred embodiment of the external signal detection foolproof method of the physical projector according to the present invention. The external signal detection of the physical projector The method of preventing fools mainly includes: in step 102, continuously detecting the presence of an external signal of the projector. It can be set to detect the signal of an external host such as a computer. In step 104, it is determined whether the external signal is present or not. A processor receives an external signal via the signal detection circuit and determines whether an external signal is present. In step l〇6a or l〇6b, the external signal mode is enabled or disabled. For example, when the processor determines that an external signal exists, a judgment signal is issued to enable the body to enable the external signal mode (step 106a). When it is detected that the external signal does not exist, another judgment signal is issued to drive the body to disable the external signal mode (step 106b). And when the external signal mode is disabled and not turned on, if the external signal mode that is disabled is executed, a disable signal indicating no external signal input is output, and a disable message is displayed by the projection unit to inform The user's current system reception status for external signals. For example, when no external signal is detected, the physical projector's internal processor will control the body to disable the external signal mode. When the user presses to switch to the external signal mode. When the signal mode button is pressed, the processor of the physical projector outputs a signal, and the control unit displays subtitles such as n〇 signal through the projection unit, and 1310652 informs the user that there is no external signal input at this time. The method of preventing staying further includes performing an indication when the external signal mode is disabled: (step 108) 'for more immediate disclosure of an external signal that is not rounded. ^, the indicating action can be performed according to requirements, for example, processing The device selects - the menu signal 'to control the body to display a mode menu by projecting the projection unit, prompting the user to switch to other signal input modes. Or the binary body directly switches to the preset replacement mode, that is, another “signal source mode”, for example, an internal image signal mode. As long as this specific action can be used to inform the outside world that there is no external signal input. η is referred to as 帛2®, which is a system block diagram of a preferred embodiment of the physical projector external signal-measuring foolproof system in accordance with the present invention. The physical projector external signal detection foolproof system 200 includes an external signal terminal 2〇2&, a second signal detecting circuit 206, a control module 208 and a switching module 21 (the signal detecting circuit 206 automatically and continuously detects The signal input state of the external signal terminal 2〇2a is measured and a detection signal is transmitted to the control module 2〇8. The control module 208 determines whether there is an external signal input according to the detection signal, and the control module 208 issues a judgment after the determination. The control signal notifies the switching module 21 to enable or disable the external signal input mode of the physical projector. When no external signal is input, the control module 208 controls the switching module 21 to turn off the external signal sharing mode. In an embodiment, the anti-dwell system 2 of the physical projector includes an internal signal source 204, a first external signal terminal 2〇2a, a second external signal terminal 202b, a signal detecting circuit 206, and a control module. 2〇8, a switching module 210. The final output signal of the physical projector system is received by a projection unit 212 to project the image by the projection. 1310652 The first external signal end 202a and the second external signal end 202b are respectively The part receives the first external signal and the second external signal, and the external signal end is, for example, a suffix card connection port, or a computer signal port, such as a VGA interface port. The internal signal is an image of the physical projector itself. The signal generated by the device is processed by the data signal. When the first external signal terminal 202a receives the first external signal from an external device 220, such as a computer or a memory card, the signal detection circuit 206 receives the signal. The external signal is transmitted to the control module 2, such as a processor. The control module 208 determines whether the first external signal mode needs to be enabled or disabled according to the presence or absence of the external signal. To enable the first external signal mode, the switching module 210 is notified to enable the first external signal mode, so that the first external signal can be input from the first external signal terminal 202a, and finally output from the physical projector system to the projection unit 212. If it is determined that no external signal exists, the control switching module 210 disables the first external signal mode, preferably, it can be designed to automatically switch to other signals. For example, the signal outputting the internal signal source 2〇4 is selected. The switching module for performing the enabling/disabling function or mode switching can be achieved by using the body. Another embodiment of the external signal detecting foolproof system is the above The first external signal end 202a and the second external signal end 2〇2b are both connected to the memory card signal. The first memory card and the second memory card are separately inserted into the second connection port, and the two connection ports respectively correspond to the first An external signal mode and a second external signal mode. When the signal mode is in the first external signal mode, if the first memory card is loosely dropped, the control module 2〇8 will determine that there is no first external signal, and notify The switching module 210 disables the first external signal mode, 1310652 and automatically switches to the second external signal mode, and outputs the data of the second memory card. Although the signal source of the above embodiment includes two sets of external signal input ports and an internal image capturing unit, which are not limited to the application of the present invention, various design combinations may be provided according to requirements, for example, only one set of external signal inputs, or more than More than two sets of external signal inputs are included in the spirit and scope of the present invention. It will be apparent from the above-described preferred embodiments of the present invention that the application of the present invention has at least the following advantages. By actively detecting the external signal, the invention can instantly respond to a message to the user when the external signal input of the physical projector is suddenly interrupted, so that the user can directly obtain the indication of the system status, which is not like using When using a physical projector, it is not easy to determine which steps should be selected to eliminate the problem, or to find the problem by guessing or trial and error. Therefore, the present invention provides a user-friendly interface and enhances the interaction between human and computer units, which further enhances the usability of the product. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and the invention may be practiced as various changes and modifications without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; A flow chart of a preferred embodiment of the external signal detection foolproof method. 11 1310652 FIG. 2 is a system block diagram showing a preferred embodiment of a physical projector external signal detection foolproof system in accordance with the present invention. [Main component symbol description] Steps 102 to 108: : - External signal terminal Internal signal source Control module Projection unit 200: External signal detection foolproof system 202a 202b: Second external signal terminal 204:
206 :訊號偵測電路 208 : 210 .切換模組 212: 220 :外部裝置206: Signal detection circuit 208: 210. Switching module 212: 220: external device
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