201229740 六、發明說明： 【發明所屬之技術領域】 本發明侧於-種具節能自動開關電子裝置之控制系 統，尤其-種具有節省電·降低零組件耗損之具節能自 動開關電子裝置之控制系統。 【先前技術】 請參閱第1圖’係顯示習知之影音控制系統方塊示意 圖，該影音控制系統1包括複數前端設備1〇、複數類比/ 數位(Analogue to Digital Converter ,簡稱 ADC)轉換芎 η、複數數位娜 gitaltoAnalogue== 稱DAC)轉換器12、一待機電源15、一中央處理器17、一 影音選擇器13、一電源管理控制單元16及一後端設備14。 前端設備10係為如DVD播放器、多媒體隨選視訊(M〇D) 或電腦，制以輸出—類比影音域給對應醜比/數位轉 換器11。而後端設備14係為如顯示器或投影機，其分別 連接該影音選擇器13及電源管理控制單元16，且該後端 設備14係用以顯示影音選擇器傳送的類比影音訊號。 續參閱第1圖示，前述電源管理控制單元16係分別連 接°玄中央處理器17及後端設備14，其用以管理及供應交 流(AC)電源給後端設備14，並該電源管理控制單元π係 根據一控制訊號啟動或關閉該後端設備14的交流電源。前 述待機電源15係提供直流(DC)電源給對應的類比/數位轉 換器11及中央處理器17。 前述複數數位/類比轉換器12係分別對應連接該等類 201229740 比/數位轉換H Π ’其肋將接收的數位影音訊號轉換為 類比影音訊號後，再傳送給影音選騎13，使影音選擇器 13 影音訊親行播放。 前述類比/數位轉換器11係分麟應連接該等前端設 備10、中央處理器17及待機電源15，其用以將前述類比 影音訊號轉換為數位影音峨，並同_斷枝有類比影 曰Λ號輸入’以產生―告知訊號傳送給中央處理器口。 刖述中央處理11 17係根據前述告知訊麟知目前前 端設備10是料傳送類比影音峨後產生前述控制訊 號’控制該電源管理控制單元16啟閉後端設備14。例如 若前述中央處，17接㈣告知峨係代表錢比影音 碱傳送時，則傳送前述控制訊號控制電源管理控制單元 16啟動該後端設備14電源。若此時中央處理器Π接收的 告知訊號係代表沒有類比影音訊磐送時，麟送前述控 制訊號控制電源管理控制單元16關_後端設備14電 源’以達到節能的效果。 雖習知影音控制系統可達到節能之目的，但其效果不 影’因為當類比影音職呈現無畫贼黑畫面時，前述類 _音訊鶴為長的低電位，使得料造成無/數位轉換 器11誤判轉致整⑽瘓無法_執行之疑慮，相對 的該影音控織統1節能效果不佳。另外，由於習知影音 控制系統1因需舰魏_/數轉換H U及複數數位/ 類比轉換器12 ’職人_ttf彡音截做觀並於轉換過 程中’會容易造錢端設備14顯示_比影音訊號有延遲 201229740 .. 或失真的現象發生。 再者，習知影音控制系統1於實際使用時，前述類比/ 數位轉換11的數量需搭配數位/類比轉換H 12的數量使 用，然而導致在製造上增加了生產成本。 以上所述，習知技術具有下列缺點： 1. 節能效果不佳； 2. 使得容易導致後端設備顯示的類比影音訊號衰減； 3. 成本增加。 9 是以，要如何解決上述習用之問題與缺失，即為本案 之發明人與從事此行業之相關廠商所亟欲研究改善之方向 所在者。 【發明内容】 爰此，為有效解決上述之問題，本發明之主要目的， 係提供一種透過一控制裝置偵測至少一前端設備是否有傳 送影像訊號，以自動控制該控制裝置其内的影音控制單元 φ 及/或後端設備之電源狀態，使得有效達到節省電源之具纩 月色自動開關電子裝置之控制系統。 本發明之次要目的，係提供一種具有降低零組件耗損 之具節能自動開關電子裝置之控制系統。 、 本發明之次要目的，係提供一種具有節省成本之具節 能自動開關電子裝置之控制系統。 為達上述目的，本發明係提供-種具節能自動開關電 子裝置之控制系統，係包括至少一具有傳送—影音气穿 前端設備、一控制裝置及至少一後端設備，其中該控制擎 201229740 置係分別對應連接該前端設備及後端設備，且前述控制裝 置包含：一影音控制單元係連接該後端設備，其根據接收 前述影音訊號之格式傳送至對應的後端設備；至少一偵測 單元係分別連接該影音控制單元與前端設備’且根據偵測 是否有該影音訊號輪入，並產生一第一信號；一處理單元 係分別連接該偵測單元及影音控制單元，並根據該第一信 唬之狀態產生一第二信號；一電力控制開關則根據前述第 一#號控制該影音控制單元之電源狀態（即控制電源狀態 為啟動或休眠）；及—待機電麟分職麟處理單元及偵 測單疋’其肋供應電力給該處理單元及侧單元，所以 透過本發明之控統的設計，俾使有效達卿省電源之 效果者。 【實施方式】 本發明之上述目的及其結構與功能上的特性，將依據 所附圖式之較佳實施例予以說明。 本發明係-種具節能自動開關電子裝置之控制系統， 請參閱第2A、3 _顯示本發明之第―較佳實 包括至少一具有傳送一影音訊號之前; 〇X 控制裝置22及至少一後端設備24，其中前端 設備20係電性連接該控制裝置22，且其係為如一語音播 放裝置、—影像播放裝置、—影音多媒體播放裝置、一筆 兄型電腦、1職其他電子裝置財任―，但不僞限於 频實施’凡可絲輸出料職的 稱的前端設備2〇。 叮 201229740 於該較佳實施’為了方便敘述將前述前端設備2〇以四 個前端設備表示說明，其中第一前端設備2〇1為多媒體隨 選視訊(MOD)，第二前端設備202為DVD播放器，第三前端 没備203為電腦，第四前端設備2〇4為麥克風，但本發明 實際實施時，該前端設備的數量不侷限於上述的數量，可 以依照使用者需求增設。 續參閱第2A圖，輔以參閱第3圖，前述後端設備24 係電性連接該控制裝置22，且其係為如一顯示器、一投影 機、一照明裝置及其他電氣產品（如佈幕機、燈光、空調系 統、音響設備）其中任一，於該較佳實施該後端設備以四個 後端設備表示說明，其中第一後端設備241為一顯示器， 第二後端設備242為一投影機，第三後端設備243為一音 響設備’第四後端設備244為佈幕機。 前述控制裝置22係包含一影音控制單元221、至少一 偵測單元222、一待機電源223、一電力控制開關224及一 處理單元225係分別連接偵測單元222及影音控制單元 221，該影音控制單元221具有影音分配及影音選擇的功 月色，且其連接前述後端設備（即分別連接對應的第一、二、 三、四後端設備24卜242、243、244)，且該影音控制單 元221係根據接收前述影音訊號之格式傳送至對應的後端 設備播放。 則述影音訊號之格式係包含am廣播、FM廣播、或者 其匕類比音訊格式，NT$C影訊、pal影訊、SECAM影訊、或 者其它類比影訊格式、RGB影訊、MPEG2影訊、MPEG4影訊、 201229740 PCM音訊、MP3音訊、胸音訊、蘭音訊、ΑΙρρ音訊、au 音訊、AAC音訊、AVI影訊、即時媒體影訊(mdia video)、即時音m(RealAudi〇)、Liquid 音訊、隨匯、 QUIC TIME、CSS DVD、VCD。 f參閱第3圖’前述個單元222係分別連接該影音 控制單兀221與前端設備2G，且其根據偵測是否有該影音 訊號輸入’並產生-第一信號傳送給處理單元咖，使該 處理單元225根據第-信號之狀態（高電位或低電位)產生 一第二信號，以控制該電力控制開關224的作動 不導通）；其中前述處理單元225係為一中央處理器 (MCU) ’且其可以透過姚（如RS232)或錄（如紅外線201229740 VI. Description of the Invention: [Technical Field] The present invention is directed to a control system for an energy-saving automatic switching electronic device, and more particularly to a control system for an energy-saving automatic switching electronic device that saves electricity and reduces component wear and tear. . [Prior Art] Please refer to Fig. 1 for a block diagram showing a conventional video and audio control system. The video control system 1 includes a plurality of front end devices, a complex analog/digital converter (ADC) conversion 芎, and a complex number. A digital gitaltoAnalogue== DAC converter 12, a standby power supply 15, a central processing unit 17, a video selector 13, a power management control unit 16, and a backend device 14. The front-end device 10 is such as a DVD player, a multimedia on-demand video (M〇D) or a computer, and outputs an analog-to-audio field to the corresponding ugly/digital converter 11. The back end device 14 is connected to the video selector 13 and the power management control unit 16, respectively, and the back end device 14 is used to display the analog video signal transmitted by the video selector. Referring to FIG. 1 , the power management control unit 16 is respectively connected to the central processing unit 17 and the back end device 14 for managing and supplying alternating current (AC) power to the back end device 14 , and the power management control The unit π activates or deactivates the AC power of the backend device 14 according to a control signal. The standby power supply 15 described above supplies direct current (DC) power to the corresponding analog/digital converter 11 and the central processing unit 17. The plurality of digital/analog converters 12 are respectively connected to the class 201229740/bit conversion H Π 'the ribs convert the received digital video signals into analog video signals, and then transmitted to the video selection 13 to make the video selector 13 Video and audio broadcast. The analog/digital converter 11 is connected to the front end device 10, the central processing unit 17, and the standby power supply 15 for converting the analog video signal into digital audio and video, and has an analogy with the broken signal. Enter the apostrophe to generate the "information signal" to the central processor port. The central processing unit 17 17 controls the power management control unit 16 to turn the back-end device 14 on and off according to the foregoing notification that the front-end device 10 is currently transmitting the analog video signal. For example, if the central portion, 17 (4) informs the representative that the money is transmitted from the video base, the control signal is transmitted to control the power management control unit 16 to activate the power of the back end device 14. If the notification signal received by the central processing unit 没有 indicates that there is no analog video transmission, the lining sends the aforementioned control signal to control the power management control unit 16 to turn off the power of the back end device 14 to achieve the energy saving effect. Although the conventional audio-visual control system can achieve the purpose of energy saving, the effect is not obvious, because when the analog video player presents a black picture with no thief, the above-mentioned class _ audio crane has a long low potential, which causes the material to be no/digital converter. 11 misjudgment turned to the whole (10) 痪 can not _ implementation of doubts, the relative sound and sound control system 1 energy saving effect is not good. In addition, since the conventional audio-visual control system 1 requires the ship Wei _ / digital conversion HU and the complex digital / analog converter 12 'employee _ ttf voice interception and view during the conversion process will be easy to make money end device 14 display _ There is a delay of 201229740.. or distortion occurs than the video signal. Furthermore, in the actual use of the conventional video control system 1, the number of analog/digital conversions 11 described above needs to be used in conjunction with the number of digital/analog conversion H 12 , which results in an increase in manufacturing cost. As described above, the prior art has the following disadvantages: 1. The energy saving effect is not good; 2. The analog video signal attenuation which is easily caused by the back end device is caused; 3. The cost increases. 9 Therefore, how to solve the above problems and problems in the past, that is, the inventors of this case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement. SUMMARY OF THE INVENTION Accordingly, in order to effectively solve the above problems, the main object of the present invention is to provide a control device for detecting whether at least one front-end device transmits video signals to automatically control video and audio control in the control device. The power state of the unit φ and/or the back-end equipment makes it possible to effectively achieve a power-saving control system for the moonlight automatic switching electronics. A secondary object of the present invention is to provide a control system with an energy-saving automatic switching electronic device that reduces component wear. A secondary object of the present invention is to provide a control system having a cost effective automatic switching electronic device. In order to achieve the above object, the present invention provides a control system for an energy-saving automatic switching electronic device, comprising at least one transmission-audio-frequency gas-passing front-end device, a control device and at least one back-end device, wherein the control engine 201229740 is provided. Correspondingly connecting the front-end device and the back-end device respectively, and the foregoing control device comprises: an audio-visual control unit is connected to the back-end device, and is transmitted to the corresponding back-end device according to the format of receiving the audio-visual signal; at least one detecting unit Connected to the video control unit and the front-end device respectively, and according to whether the video signal is detected to be rotated, and generates a first signal; a processing unit is respectively connected to the detecting unit and the audio-visual control unit, and according to the first The state of the signal generating a second signal; a power control switch controls the power state of the video control unit according to the first ## (ie, the control power state is activated or hibernated); and - the standby power is divided into the occupation processing unit And detecting the unit 'the ribs supply power to the processing unit and the side unit, so through the control system of the present invention Designed to make effective Daqing's power supply effect. [Embodiment] The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings. The present invention relates to a control system for an energy-saving automatic switching electronic device. Please refer to FIGS. 2A, 3 _ showing the first aspect of the present invention, preferably including at least one having before transmitting an audio-visual signal; 〇X control device 22 and at least one after The terminal device 24, wherein the front-end device 20 is electrically connected to the control device 22, and is such as a voice playback device, a video playback device, a video and audio multimedia playback device, a brother-type computer, and other electronic devices. However, it is not limited to the frequency implementation of the front end equipment of the Fans' output.叮201229740 In the preferred embodiment, the foregoing front-end device 2 is illustrated by four front-end devices for convenience of description, wherein the first front-end device 2〇1 is multimedia on-demand video (MOD), and the second front-end device 202 is on DVD playback. The third front end device 203 is a computer, and the fourth front end device 2〇4 is a microphone. However, in the actual implementation of the present invention, the number of the front end devices is not limited to the above-mentioned number, and may be added according to user requirements. Continuing to refer to FIG. 2A , and referring to FIG. 3 , the back end device 24 is electrically connected to the control device 22 , and is such as a display, a projector, a lighting device, and other electrical products (such as a curtain machine). In the preferred embodiment, the back-end device is illustrated by four back-end devices, wherein the first back-end device 241 is a display and the second back-end device 242 is a The projector, the third backend device 243 is an audio device, and the fourth backend device 244 is a curtain. The control device 22 includes a video control unit 221, at least one detecting unit 222, a standby power source 223, a power control switch 224, and a processing unit 225 connected to the detecting unit 222 and the video and audio control unit 221, respectively. The unit 221 has a power distribution color of the audio-visual distribution and the audio-visual selection, and is connected to the foregoing back-end equipment (that is, respectively connected to the corresponding first, second, third, and fourth back-end devices 24, 242, 243, and 244), and the video and audio control is performed. The unit 221 transmits to the corresponding backend device according to the format of receiving the foregoing video signal. The format of the audio and video signal includes am broadcast, FM broadcast, or its analog audio format, NT$C video, pal video, SECAM video, or other analog video format, RGB video, MPEG2 video, MPEG4 video, 201229740 PCM audio , MP3 audio, chest audio, LAN audio, ρρρ audio, au audio, AAC audio, AVI video, instant media (mdia video), instant audio m (RealAudi〇), Liquid audio, FX, QUIC TIME, CSS DVD, VCD. f Referring to FIG. 3, the foregoing unit 222 is connected to the video control unit 221 and the front end device 2G, respectively, and is based on detecting whether the video signal is input and generating a first signal to the processing unit. The processing unit 225 generates a second signal according to the state of the first signal (high potential or low potential) to control the operation of the power control switch 224 to be non-conductive; wherein the processing unit 225 is a central processing unit (MCU). And it can pass through Yao (such as RS232) or recorded (such as infrared
傳輸）傳輸方式控制前述後端設備24之待機或休眠H 一例如若該處理單元225根據接收的第一信號之狀態為 同電位時，則傳送該第二信號控制該電力控制開關四4導 通，令該影音控制單元221之電源狀態為啟動狀態，使影 音控制單元221繼續執行動作，將影音訊號傳送給對應的 後端設備； & 若1¾處理單元225根據接收的第-信號之狀態為低電 位時，則傳送該第二信號控制該電力控制開關224不導 通’令該影音控制單元221之電源狀態為關閉狀態而不執 行動作’所以透過該控制裝置22之偵測單元222來偵測而 無須經任何轉換裝置來轉換訊號，令影音控制單元221傳 送給對應後端設備的影音訊號不會失真或衰減，進而又有 效達到節省成本以及絕佳之節能效果。 201229740 另者於該較佳實施前述偵測單元222係表示四個侧 單元222做說明，亦即該偵測單元2烈的數量係搭配該前 端設備20的數量。前述電力控制開關224雜據前述第二 信號啟閉該影音控制單元221之電源狀態，且於該較佳實 施該電力控制開關22以系選擇設在如第2β圖該處理單元 225内’亦即5亥電力控制開關224與處理單元225形成一 積體電路，或如第2A圖設在該控制裝置22内。 ^ 續參閱第3圖所示，前述待機電源挪係分別連接該 處理單元225及偵測單元222，其用以供應電力給處理單 70 225及前述偵測單元222(即四個偵測單元222)。另者， 該控制系統2更包含-控制介面25係連接該處理單元 225’且其用以供使用者輸入指令到該處理單元四5内，使 s亥處理單元225根據前述輸入指令控制對應的後端設備。 例如若使用者欲將第二前端設備2〇2的影音訊號分配 給該第一、二後端設備24卜242播放時，使用者須從該控 • 制介面25上輸入指令後，透過該控制介面25將輸入的指 令傳送給該處理單元225，使處理單元225根據輸入的指 令控制影音控制單元221將第二前端設備202的影音訊號 分配傳送給第一、二後端設備241、242播放。 若使用者此時欲選擇第四前端設備204的音訊訊號傳 送至第三後端設備243時，則使用者從該控制介面25上輸 入才a令後’藉由該控制介面25將輸入的指令傳遞至該處理 單元225 ’使處理單元225根據輸入的指令控制影音控制 單元221選擇第四前端設備204的音訊訊號傳送給第三後 201229740 端設備243播放。 另者，由於影音訊號有時會呈現無畫面或黑畫面，使 價測單元222會判斷前端設備20無影音訊號輸入，所以為 了讓偵測單元222準確偵測及判斷，使得使用者可事先透 過控制介面25設定一預設時間（如2分鐘）輸入至該處理單 元225内，使該處理單元225根據接收第一信號之狀態（低 電位）時間與預設時間比對’若前述接收第一信號之狀態 (低電位）時間大於該預設時間’則處理單元225判斷為無 景夕音訊號輸入，便傳送第二訊號控制該電力控制開關224 不導通，令該影音控制單元221之電源狀態為關閉狀態而 不執行動作。 若前述接收第一信號之狀態（低電位）時間小於該預設 時間，則處理單元225判斷為仍有影音訊號輸入，則傳送 該第二信號控制該電力控制開關224導通，令該影音控制 單元221之電源狀態為啟動狀態，使影音控制單元221繼 續執行動作。 明參閱第4圖係顯示本發明之第二較佳實施例示意 ^該較佳實關駐要結構及辆_及其功效大致與 前述第-較佳實施例相同，故在此不重新贅述，其兩者差 異處在於：該控制系統2更包含—電源管理控制單元邪， 其係分別連接魏理單元225與前端設備2Q及後端設備 24且其用以官理及供應電源（此為交流電源)給後端設備 前端設備20，並根據触前述第二錢㈣對應的後 垛》又備24及/或則端设備20的電源啟閉。其中於該較佳實 201229740 . 施該電源管理控制單元26係根據第二信號控制對應的後 端設備24的電源啟閉做說明。 另者，於該較佳實施該後端設備24係以五個後端設備 表示說明，其中第一後端設備241為一顯示器，第二後端 設備242為一佈幕機及燈光，第三後端設備243為一音響 設備’第四後端設備244為空調系統，第五後端設備245 為投影機。 以下舉一具體實例做說明： ® 當一教學場所（如教室）内裝設的第一至四前端設備 201、202、203、204 以及第一至五後蜱設備 241、242、243、 244、245處於使用狀態時，使偵測單元222會一直偵測到 前述第一至四前端設備2(U、202、203、204有影音訊號輸 入後，並傳送第一信號給處理單元225，使處理單元225 根據接收第一h號之狀態為南電位，而得知第一至四前端 6又備201、202、203、204仍正在使用中，並傳送第二信號 φ 控制該電力控制開關224導通，令該影音控制單元221之 電源狀態為啟動狀態繼續執行動作的同時，前述第二訊號 還會控制該電源管理控制單元26開啟，以繼續供應交流電 源給第一至五後端設備241、242、243、244、245使用； 若此時該偵測單元222偵測到該第一至四前端設備 201、2Q2、203、204已無影音訊號輸入時，則偵測單元222 會立即傳送第一信號給處理單元225，使處理單元225根 據接收第-信號之狀態為低電位，而得知該第—至四前端 備2(U、202、203、204已無使用後，便傳送第二信號控制 201229740 電力控制開關224不導通’令該影音控制軍元221之電源 狀態為關閉狀態而不執行動作，同時前述第二信號還會一' 併控制電源管理控制單元26，以關供應給第二至五後端 設備24卜242、243、244、245的交流電源。The transmission mode controls the standby or hibernation of the foregoing backend device 24. For example, if the processing unit 225 is at the same potential according to the state of the received first signal, transmitting the second signal to control the power control switch 4 to be turned on. The power state of the video control unit 221 is activated, and the video control unit 221 continues to perform an action to transmit the video signal to the corresponding backend device; & if the processing unit 225 is low according to the state of the received first signal At the potential, the second signal is transmitted to control the power control switch 224 to be non-conducting 'the power state of the video control unit 221 is off state without performing an action'. Therefore, the detection unit 222 of the control device 22 detects the The signal is not converted by any conversion device, so that the video signal transmitted by the AV control unit 221 to the corresponding back-end device is not distorted or attenuated, thereby effectively achieving cost saving and excellent energy saving effect. 201229740 In the preferred embodiment, the detecting unit 222 is illustrated by four side units 222, that is, the number of the detecting units 2 is matched with the number of the front end units 20. The power control switch 224 opens and closes the power state of the video control unit 221 according to the second signal, and in the preferred embodiment, the power control switch 22 is selected in the processing unit 225 as shown in the second figure. The 5th power control switch 224 and the processing unit 225 form an integrated circuit, or are disposed in the control device 22 as shown in FIG. 2A. Continuing to refer to FIG. 3, the standby power supply is connected to the processing unit 225 and the detecting unit 222 for supplying power to the processing unit 70 225 and the detecting unit 222 (ie, the detecting unit 222). ). In addition, the control system 2 further includes a control interface 25 connected to the processing unit 225 ′ and configured for the user to input an instruction into the processing unit 4 5 , so that the processing unit 225 controls the corresponding according to the input instruction. Backend device. For example, if the user wants to assign the video signal of the second front-end device 2〇2 to the first and second back-end devices 24 to play 242, the user must input an instruction from the control interface 25 to pass the control. The interface 25 transmits the input command to the processing unit 225, and causes the processing unit 225 to control the video and audio control unit 221 to transmit the video signal distribution of the second front-end device 202 to the first and second back-end devices 241, 242 according to the input command. If the user wants to select the audio signal of the fourth front-end device 204 to be transmitted to the third back-end device 243 at this time, the user inputs the command from the control interface 25 and then inputs the command by the control interface 25. The processing unit 225 is passed to the processing unit 225 to cause the processing unit 225 to control the audio and video control unit 221 to select the audio signal of the fourth front end device 204 to be transmitted to the third back 201229740 end device 243 according to the input instruction. In addition, since the video signal sometimes presents no picture or black picture, the price measurement unit 222 determines that the front end device 20 has no audio and video signal input, so that the detection unit 222 can accurately detect and judge, so that the user can pass in advance. The control interface 25 is configured to input a predetermined time (for example, 2 minutes) into the processing unit 225, so that the processing unit 225 compares with the preset time according to the state (low potential) of receiving the first signal. If the state of the signal (low potential) is greater than the preset time, the processing unit 225 determines that there is no input signal, and transmits a second signal to control the power control switch 224 to be non-conducting, so that the power state of the audio control unit 221 is enabled. The action is turned off without performing an action. If the state (low potential) of receiving the first signal is less than the preset time, the processing unit 225 determines that there is still a video signal input, and transmits the second signal to control the power control switch 224 to be turned on, so that the video control unit is enabled. The power state of 221 is the startup state, causing the video and audio control unit 221 to continue performing the action. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is a view showing a second preferred embodiment of the present invention. The preferred embodiment of the present invention is substantially the same as the first preferred embodiment, and therefore will not be described again. The difference between the two is that the control system 2 further includes a power management control unit, which is connected to the Wei Li unit 225 and the front end device 2Q and the back end device 24 respectively, and is used for the administration and supply of power (this is an exchange) The power supply is given to the back-end device front-end device 20, and the power supply of the terminal device 20 is turned on and off according to the second-order (four) corresponding to the second money (4). In the preferred embodiment, the power management control unit 26 controls the power supply opening and closing of the corresponding rear end device 24 according to the second signal. In addition, in the preferred implementation, the backend device 24 is illustrated by five backend devices, wherein the first backend device 241 is a display, the second backend device 242 is a curtain and a light, and the third The backend device 243 is an audio device. The fourth backend device 244 is an air conditioning system, and the fifth backend device 245 is a projector. The following is a specific example: ® when the first to fourth front-end devices 201, 202, 203, 204 and the first to fifth rear-end devices 241, 242, 243, 244 are installed in a teaching place (such as a classroom). When the 245 is in the use state, the detecting unit 222 will always detect the first to fourth front-end devices 2 (U, 202, 203, 204 have video and audio signal input, and transmit the first signal to the processing unit 225 for processing. The unit 225 is configured to be in the south potential according to the state of receiving the first h number, and learn that the first to fourth front ends 6 are still in use 201, 202, 203, 204 are still in use, and transmit the second signal φ to control the power control switch 224 to be turned on. The second signal also controls the power management control unit 26 to be turned on to continue to supply the AC power to the first to fifth backend devices 241, 242 while the power state of the AV control unit 221 is in the startup state. 243, 244, 245 are used; if the detecting unit 222 detects that the first to fourth front end devices 201, 2Q2, 203, 204 have no audio and video signal input, the detecting unit 222 immediately transmits the first Signal processing Element 225, causing processing unit 225 to be low according to the state of receiving the first signal, and knowing that the first to fourth front end backup 2 (U, 202, 203, 204 have no use, then transmitting the second signal to control 201229740 power The control switch 224 is non-conducting 'the power state of the video control unit 221 is off state without performing an action, and the second signal is also '' and controls the power management control unit 26 to turn off the supply to the second to fifth. The end devices 24 are 242, 243, 244, 245 AC power.
因此，藉由本發明此控制系統2的設計，使得一方面 能夠改善習知會造成影像訊號失真的問題，且於實際生產 =又可省略習知諸多轉換器元件，其另一方面又有效達到 卽能的效果’相賴控織置22亦會隨著待機時間縮短而 提升其内零組件的使用壽命。 I 以上所述，本發明相較於習知具有下列優點： 1·具有絕佳之節能效果； 2. 具有節省成本； 3. 具有降低控制裝置其内零組件損耗之效果。 按，以上所述，僅為本發明的較佳具體實施例，惟本 發明的特徵並不侷限於此’任何熟悉該項技藝者在本發明 項域内’可輕易思及的變化或修飾，皆應涵蓋在以下本發 明的申請專利範圍中。 鲁 【圖式簡單說明】 第1圖係習知之實施方塊示意圖； 第2A圖係本發明之第一較佳實施例之方塊示意圖； 第2B圖係本發明之第一較佳實施例之另一方塊示意圖； 第3圖係本發明之第一較佳實施例之實施方塊示意圖； 第4圖係本發明之第二較佳實施例之實施方塊示意圖。 12 201229740 【主要元件符號說明】 控制系統 … 2 電力控制開關 …224 前端設備 … 20 處理單元 …225 第一前端設備… 201 後端設備 …24 第二前端設備… 202 第一後端設備 …241 第三前端設備… 203 第二後端設備 …242 第四前端設備… 204 第三後端設備 …243 控制裝置 … 22 第四後端設備 …244 影音控制單元… 221 第五後端設備 …245 4貞測單元 … 222 控制介面 …25 待機電源 … 223 電源管理控制單元 ..•26 13Therefore, with the design of the control system 2 of the present invention, on the one hand, the problem that the image signal distortion is caused by the conventional method can be improved, and in actual production, a plurality of conventional converter components can be omitted, and on the other hand, the function is effectively achieved. The effect of the control woven 22 will also increase the life of the components within the standby time as the standby time is shortened. I As described above, the present invention has the following advantages over the prior art: 1. Excellent energy saving effect; 2. Cost saving; 3. The effect of reducing component loss in the control device. The above description is only a preferred embodiment of the present invention, but the features of the present invention are not limited to the 'any change or modification that can be easily considered in the field of the invention. It is intended to be included in the scope of the claims of the present invention below. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a first embodiment of the present invention; FIG. 2B is a block diagram of a first preferred embodiment of the present invention; Figure 3 is a block diagram showing the implementation of the first preferred embodiment of the present invention; and Figure 4 is a block diagram showing the implementation of the second preferred embodiment of the present invention. 12 201229740 [Description of main component symbols] Control system... 2 Power control switch...224 Front-end equipment... 20 Processing unit...225 First front-end equipment... 201 Back-end equipment...24 Second front-end equipment... 202 First back-end equipment...241 Three front-end devices... 203 second back-end devices...242 fourth front-end devices... 204 third back-end devices...243 control devices... 22 fourth back-end devices...244 video control units...221 second back-end devices...245 4贞Measurement unit... 222 Control interface...25 Standby power supply... 223 Power management control unit..•26 13