1260163 玖、發明說明： 【發明所屬之技術領域】 本务明有關於數位視訊界面（Digital Visual Interface，DVI)， 尤拍一種偵測數位視訊界面離線模式之方法及相關之數位視訊界面接 收器。 【先前技術】 按’陰極射線管（CathQde Ray Tube，CRT)顯示器是一種傳統的 類比視訊顯示裝置，而液晶顯示器、（Uquid咖加lcd) 則疋種傳統的數位視訊顯示裝置，其中戶斤謂數位視訊顯示裝置係指 成夠從-訊號源（如電腦之視訊卡）處接收類比視訊訊號或者數位視 讯訊號，並最終轉換成數位視訊訊號而顯示於屏幕上之裝置。 數位員示工作群組（Digital Display Working Group，DDWG)已 公佈了一種稱為“數位視訊界面（Digital Visual interface，DVI)” 的業界標準，該標耗為_麵純麵示訊義高速雜位傳輸技 術。採用上述標準之數位視訊界面主要的用途是在電腦（如工作站、 桌上筆纪型電腦等）及不同類型之顯示裝置（如陰極射線管 顯示器、液晶顯示器、投影機等）之間提供具高度相容性之連接。在 與數位視訊界面相容的主機系統中，即可使用單純的數位界面或類比 與數位的混合界面。 斤头驾知主機糸統及液晶顯示裔在本質上均為數位裝置。 而陰極射線：顯示裔的視訊界面必須利用一數位轉類比轉換器 (Dlgltal to Analog Converter，DAC)將原本的數位訊號轉換成適 1260163 合類比視觸示裝置使狀類比_。相反地，液晶顯示ϋ必須配備 有一類比轉數位轉換器（Analog to Digital Converter，ADC)以接 收視efl界面發出的類比視瓶號，並將其轉換減純訊峨。然而， 、界面上使用數位轉類比轉換器或者在液晶顯示器上使用類比 轉數位轉換不僅增加了裝置的瓣成本，而且經過多摘比訊號與 數位訊號之_來_換，必齡降低視訊峨的品質。 口此#有兀整數位傳輸解決方案的數位視訊界面就成爲視訊連 ίτ準之主Μ通^，在數位視訊界面系統中還包括—模式彳貞測電路， 用於持續地侧她位視訊界面魏器所接收到視誠號的工作模 0。在數位視訊界面系統中’同步訊號（Syne)都會被編碼成資料串 流（Data stream) ’而數錄訊界面接收器戦要·接收器和解碼 器分別純同步贿靖·步峨，觸解錢的同步減進行模 式侧。傳統的數位視訊界面即使在離線模式（刚^她）時， 且無需顯雜何圖像只需監控輪人訊號的狀態下，也會將所有的數位 視訊界面接《制啟，並連猶顯概到的喊，再提供給模式 勤i電路去侧。上雜峨糊冑_咐砸通道進行 ^作並繁地去侧訊麵式，錄讀高電路健量及散熱量。 【發明内容】 本發明之目的秘倾轉_賴紅方法及 相關數位視訊界面_，以有效減少數位視訊界峨之耗電量， 並且提升系統之效能。 本發明提供-麵驗域訊界_、_仏綠及侧數位視 1260163 m界面接收器，數位視訊界面接收器包括複數個接收通道、一時脈訊 號通道及-離線模式偏彳器，每—接收通道皆具有—解碼器用以對從 相絲收通道所接收到的訊號進行解碼；離線模式债測器包括模式傾 測單元、時脈訊麵測單元及斷電控制單元，時脈訊麵測單元用以 _ 侧時脈峨之模式，料定是否需要在-第-職時間關内開啓 - 至=接收通道；斷電控制單元可經由模式侧單元去_並判斷視 时&之操作模式’ §彳祕模式麵測到為非有效模式時，斷電控制 .單元會在-第二預設時間區間内義所有解碼器及所有通道。通常， . 該第二職時間區間會_第-預設時間區間長得多。 、與本發明之先前技術相比較，本發明之偵測數位視訊界面離線模 式之方法不需要連續不斷地偵測視訊訊號之模式，而是只在一較短的 侧時間内完成訊號模式之侧，其餘時間均處於離線模式，這樣可 以減少數位視訊界面系統（如：一數位視訊界面晶片）之運作時間， 從而減少晶狀耗電量。操㈣雜及耗電量__可使數位視訊 φ 界面晶片的壽命及穩定性大幅提高。 【實施方式】 - 請參閲第一圖所示’第一圖係本發明數位視訊界面（Digital - Visual Interfaee，DVI)系統1之功能方顧。該數位視訊界面系統 1包括-數位視訊界面發送㈣、—數位視訊界面接收㈣以及一晶 體振盪器（Crystal 〇SciUator，服）7〇。在本發明之一較佳實施 方式中’數位視訊界面接收器40係用於接收數位視訊界面發送器2〇 ⑧ 8 l26〇l63 所發送之複數個不同的訊號，如：水平同步訊號（Horizontal1260163 玖, invention description: [Technical field of the invention] The present invention relates to a digital video interface (DVI), and a method for detecting a digital video interface offline mode and a related digital video interface receiver. [Prior Art] According to the 'CathQ ray tube (CRT) display is a traditional analog video display device, and the liquid crystal display, (Uquid coffee plus lcd) is a traditional digital video display device, which A digital video display device is a device that receives an analog video signal or a digital video signal from a source of a signal (such as a video card of a computer) and finally converts it into a digital video signal for display on the screen. The Digital Display Working Group (DDWG) has published an industry standard called "Digital Visual Interface (DVI)", which is a pure-faceted analog high-speed miscellaneous bit. Transmission technology. The main purpose of the digital video interface using the above standard is to provide height between computers (such as workstations, desk-type computers, etc.) and different types of display devices (such as cathode ray tube displays, liquid crystal displays, projectors, etc.). Compatibility connectivity. In a host system compatible with the digital video interface, a simple digital interface or a mixed interface of analog and digital can be used. The masters and the LCDs are essentially digital devices. The cathode ray: Display video interface must use a digital to analog converter (DAC) to convert the original digital signal into a suitable analogy device. Conversely, the LCD must be equipped with a Analog to Digital Converter (ADC) to receive the analog bottle number from the efl interface and convert it to a subtractive signal. However, the use of digital to analog converters on the interface or the use of analog-to-digital conversion on liquid crystal displays not only increases the cost of the device, but also reduces the video signal by multiplying the analog signal and the digital signal. quality. The digital video interface with the 兀 integer bit transmission solution becomes the main interface of the video communication system, and the digital video interface system also includes a mode detection circuit for continuously aligning the video interface with her. The Wei instrument received the working mode 0 of the Vision. In the digital video interface system, the 'synchronization signal (Syne) will be encoded into a data stream'. The number of the interface interface receivers, the receiver and the decoder are respectively synchronized with each other. The synchronization of the money is reduced to the mode side. The traditional digital video interface will connect all the digital video interfaces even when it is in the offline mode (just ^ her), and it does not need to display any images. The general shouting is provided to the mode diligent i circuit to the side. On the 峨 峨 胄 咐砸 咐砸 咐砸 进行 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ SUMMARY OF THE INVENTION The object of the present invention is to reduce the power consumption of the digital video industry and improve the performance of the system. The invention provides a surface detector _, _ 仏 green and a side digital view 1260163 m interface receiver, and the digital video interface receiver comprises a plurality of receiving channels, a clock signal channel and an offline mode eccentric device, each receiving The channel has a decoder for decoding the signal received from the phase receiving channel; the offline mode debt detector includes a mode tilting unit, a clock signal measuring unit and a power-off control unit, and a clock signal measuring unit. In the mode of _ side clock, it is determined whether it needs to be turned on-to-receive channel in the -first-time time-off; the power-off control unit can go to the mode side unit and judge the operation mode of the time & When the secret mode is detected as non-active mode, the power-off control unit will define all decoders and all channels within the second preset time interval. Usually, the second job time interval will be much longer than the first-preset time interval. Compared with the prior art of the present invention, the method for detecting the offline mode of the digital video interface of the present invention does not need to continuously detect the mode of the video signal, but completes the side of the signal mode only in a short side time. The rest of the time is in offline mode, which can reduce the operating time of the digital video interface system (such as a digital video interface chip), thereby reducing the crystal power consumption. Operation (4) Miscellaneous and power consumption __ can greatly improve the life and stability of the digital video φ interface wafer. [Embodiment] - Please refer to the first figure. The first figure is a functional example of the Digital-Visual Interfaee (DVI) system 1 of the present invention. The digital video interface system 1 includes a digital video interface transmission (4), a digital video interface reception (4), and a crystal oscillator (Crystal 〇SciUator). In a preferred embodiment of the present invention, the digital video interface receiver 40 is configured to receive a plurality of different signals transmitted by the digital video interface transmitter 2 8 8 l 26 〇 l63, such as a horizontal synchronization signal (Horizontal synchronization signal)
Synchronization signal，HSYNC signal)、垂直同步訊號（Vertical Synchronization signal，VSYNC signal)、顯示致能訊號（Display Enable signal，DE signal)、時脈訊號（ci〇ck signal, CLK signal) 以及像素資料訊號（Pixel Data signal)等。 數位視訊界面發送器20包括複數個編碼器以及複數個發送通道。 如第一圖所示，時脈訊號發送通道用於向數位視訊界面接收器4〇發送 日谦訊號。同時，水平同步訊號、餘同步城、顯示致能訊號以及 像素資料訊號亦由數位視訊界面發送器2G發送，例如透過n#發送通 迢（其中，η為從〇到5的整數）來發送通道訊號。 另方面，數位視訊界面接收器包括複數個接收通道，用於接 收上述發送通道所發送之不同訊號。例如，_收通翻於接收曝 运通道所發送的訊號，1#接收通道用於接收發送通道所發送之訊 號，脈峨減職触雜_發送稱所發送的時脈訊 號。每-_收通道均包括—對應之_，用於對從相應的接收 通這所接《的《進行解碼。例如，_對從⑽接收通道所接 1##_道所接㈣的訊號進行 解碼’依此_。_碼關5#觸料可以輸出解碼後的水平同步 :垂直TO號、顯卿咖及_軸。晶體振盪器 川係用來提供一參考時脈訊號。 10 ’其包括模式 數位視訊界面接收器4G還包括—離線模式細器 ⑧ 9 1260163 偵測單元12、時脈訊號偵測單元14以及斷電控制單元π。首先，時 脈訊號伽彈元U從日_應狄通道概時脈喊，鎌判斷該時 脈訊號是否有效且正常，例如，可以在—個預定週_概略地計算時 脈訊號的變化’關斷該時脈訊號是否在預定的解翻内（如： 25MHz〜16»)。如果時脈訊號姐且正f，_输鮮元16會啟 動0#接收通這及G#解碼器’ 〇#狐通道會從Q#發送通道減傳送的訊 號，再發秘_懸進行解碼，從帽碼財平_喊及垂直同 步訊號。反之’在上述侧雕巾，—旦時脈職‘侧單元14侧不 到正常的時脈訊號，則斷電控制單元16將在—預定時間區間内關閉模 式偵測單元12及所有接收通道，以節省功率消耗。 一旦0#接收通道被啟動，模式賴測單元12會根據其偵測到的〇# 接收通道上之解碼後的水平同步城及垂直同步訊號之狀態來判斷其 操作杈式，以便在一段非常短的時間内（如：1〇〇毫秒（miUisec〇nd)) 讀取水平同步減及錢同步訊號。如果水平同步訊號及餘同步訊 號均有效且正常，則斷電控制單元16會維持〇#接收通道之啟動狀態， 並可以根據顯示方式和顯示頻率決定是否進一步啟動其它接收通道。 其中，顯示方式可以根據計算顯示行數或計算顯示像素來決定。在數 位視§fl界面系統1中包含有六個發送通道及六個接收通道，其中，〇# 接收通道到2#接收通道分別用於收發紅、綠、藍三種視訊訊號。在較 低解析度的情況下，例如解析度小於128〇χ；[〇24，且顯示頻率低於60Hz 時，只需要用到0#接收通這到2#接收通道來傳送顯示訊號，因此斷電 ⑧ 10 1260163 控制單元16只需啟動⑽接收通道到2#接收通道而_其他通道，從 而達到省電之目的。反之，在較高解析度的情況下，例如解析度為麵 ’且顯示頻率為7時，斷電控制單元16會啟動所有_收通 道到5#接收通道。 如果模式侧單元12未侧猶效且正f的水平同步訊號與垂直 同步訊號’浙便時脈訊號侧單元14偵_ 了正確_脈訊號，斷 電控制單元16仍會酬所有的接收通道，進人-段省電簡。在較佳 實施例中，模式偵測單元12藉由摘測0#接收通道之模式來判斷視訊訊 嬈疋否有效且正常。但此處需制注意的是，模式侧單元12也可以 根據實際需要，舰上述__方法去侧其他触概，從而判 斷麵社的視訊訊號是砰效且正常；糊來説，模式制單元12 可以偵測任何接收通道上的顯示致能訊號，而非只能偵測_收通道 上的水平同步訊號與垂直同步訊號。f於此項技藝之人士皆可了解藉 由對任何接收通道上的顯示致能訊號進行數位處理，與偵測水平同步 訊號與垂直同步訊號也可以獲得視訊訊號的訊息；模式偵測單元η以 及時脈訊號偵測單元14將偵測到的視訊訊號的訊息發送到斷電控制單 元16，斷電控制單元16控制〇#接收通道到5#接收通道的〇#通道控制 訊號到5#通道控制訊號，以回應於所接收到的訊息。 判斷模式是否有效且正常可以利用將接收到的訊息和一預載之訊 息查詢表（圖中未示）相比較來得知，訊息查詢表中記錄了複數個有 效且正常模式的相關資訊，如時脈訊號頻率'顯示解析度及顯示頻率 ⑧ 11 1260163 :，但不僅晴些_補糊概吻軸有效且正 ㈣水平同步訊號及垂直同步訊號時，新電模式控制單元μ亦可在上 述預疋時間區間内關閉時脈訊號接收通道。 第二圖揭示了本發明數位視訊界面系統}，之 ^ 只她万式，與上 述叙心施方式相比，區別在於數位視訊界面系統進一步包括一 1 控制單元㈤⑽C输〇ner _，Μ⑻⑽，·微控制單7 以姆倾轉面細4G，巾賴伽_2,、時脈簡貞 測早謂以及斷電控鮮元16，之運作傭解讀可以根據 用戶指令使麵細諸停綱，恤，峨㈣了待 二，時間，則在待機等待時間到達時，微控制單元6Q，即可關閉數 位視成界面接收器40’ 。 本發明之轉赋侧^ 1G，可勤制水伟步峨、垂直同 ^號、顯示致能訊號以及像素資料訊號來週期性地判斷數位視訊訊 她作齡糊糊㈣，，蝴t，例如，當偵測到數 立視轉面發送器2。’所發送之有效的時脈訊號後， ^測單元14,的铜結果進—步酬視訊訊號的操倾式。接著， 電控制单凡16’再根據時脈訊號偵測單元14,及模式偵測單元12， 的^結果來決定是否需要啟動_收通道到繼通道。因此，本 备明數位視訊界面系統1， 在待機偵測模式中的整體耗電量會大為降 k而提升數位視訊界面系統工’的壽命及性能；另外，離線模式偵 ⑧ 12 1260163 、 可以由磁"制單凡60，來控制，從而能夠滿足用戶的特定要 求。 第三圖係-流程圖，闡述本發明之較佳實施方式中偵測視訊界面 離線模式的方法，包括如下步驟： 步驟100:開始離線模式偵測。 V驟1Q2 ·彳貞測日禮峨之有效性及頻率。如果從接收通道接收到 的時脈訊號有效且正常，職程前進至步驟·，否則重覆步驟ι〇2。 偏㈣間可為1()()毫秒，較佳的铜時間實質大於垂直同步訊號的週 期（如：40毫秒）的二倍。 步驟104 :啟動0#接收通道。 步驟106 ·彳貞測0#接收通道上水平同步訊號、垂直同步訊號以及 顯不致能訊號的有效性及週期。如果上述視訊訊號有效且正常，則流 裎前進至步驟108，否則前進至步驟110。 步驟108 :啟動複數個接收通道以回應於正確的顯示模式。流程前 進至步驟112。 步驟110 :關閉⑽接收通道到5#接收通道900毫秒，然後返回至 步驟100。 步驟112 :結束。 請參閱第一圖與第四圖所示，第四圖顯示本發明離線模式偵測方 法中的0#接收通道的啟動與0#接收通道到5#接收通道的關閉情況。首 先，斷電控制部分16啟動0#接收通道以便模式偵測單元12在一極短 ⑧ 13 1260163 之特定時間區間（如：ln iUU笔秒）内判斷〇#接收通道之操作模式。若 0#接收通道的操作模式_結果為有效且正常，則斷_單元16維 夺接收通逼之啟動狀態，並可視需要啟動其它的接收通道。如果⑽ 接收通道的操作模式被_為無效，則斷電控鮮元16將所有接收通 道關閉-較長時間區間（如：咖毫秒），為達到較佳省電效果，可以 k可此的t用於綱的相，由於時脈訊號所需之伽彳時間（通常 為卜2 €秒）比侧視訊訊號所需之制時間短很多，故可以忽略時 脈訊號之偵測時間。 —雖然在本發明之上述實施方式中，侧時間（通道開啓時間）設 定為約⑽毫秒，而待機時間（通道關閉時間）設定為約咖毫秒， 而上述兩時間均可以根據實際情況作以調整。通常伽彳_應大於被 偵測之訊魏期之二倍。修，垂直同步喊的驗週麟4_、， 則訊號模式之偵測時間應該大於8〇毫秒。 與習知技術相比，本發明之偵測數位視訊界面離線模式之方法不 需要連續不_侧視訊峨之模式，而只隸报短的铜時間内债 測訊號狀態，這樣可喊少數倾訊界面线（如：—齡視訊界面 晶片）之運作時間’從而減少晶片之耗電量。舉例來説，在離線模式 下可使耗《減少至原來的1/30，較短的運作時間及耗電量低的特點 使得數位視訊界面晶片的壽命及穩定性大幅提高。 本發明揭示了-種侧數位魏界面轉料之方舰及與該方 法相關之數位視訊界面触n，數位視訊界轉㈣包括複數個接收 ⑧ 14 1260163 通道、時脈訊號接收通道以及離線模式谓測器；每一接收通道都可接 收IfUfU虎，而時脈訊號接收用以接收時脈訊號，每一接收通道包括 一解碼③’用於解碼減接收通道上的訊號。轉模式侧器電連接 至時脈訊號接收通道及解碼器，藉由侧時脈訊號之有效性來決定是 否需要在第i設時間關内開啓至少—接收通道。離線模式侧器 包括模式摘測單元、時脈訊號_單元及斷電控制單元。斷電控制單 元根據模式翻單元的侧結絲控健收通道的啟雜關，當债 測結果為無效時，斷電控制單元會在第二預設時間區間_閉所有的 接收器與解瑪ϋ。上述第二職咖區間要比第—預設_區間長得 多。 /綜上所述，本發明確已符合發明專利之要件，麦依法提出專利申 "月准’以上所述者僅爲本發明之較佳實施方式，舉凡熟習本案技術 之人士援依本發明之精神所作之等效修飾或變化，皆涵蓋於後附之申 請專利範圍内。 【圖式簡單說明】 第一圖係本發魏位視訊㈣統之較佳實财式之功能糊，該 數位視訊界面錢包括—數位視訊界面接收器，該數位視訊界面 接收器包括一離線模式偵測器。 第二圖係數位視訊界面系統之另—實施方式之功能方塊圖，該數位視 讯界面系統包括一數位視訊界面接收器。 第三圖係本發日⑽·位魏界_顧式之方法之流程圖。 第四圖係-示意圖，用以説位視訊界面離線模賴測過程中_ ⑧ 15 1260163 時間與待機時閒之分配情況 【主要元件符號說明】 數位視訊界面系統 模式偵測單元 斷電控制單元 數位視訊界面接收器 離線模式偵測器 10 12，12’時脈訊號偵測單元 14 16，16’數位視訊界面發送器20 10, 14,20, 40, 40’微控制器 60, 晶體振盪器 70，70’Synchronization signal (HSYNC signal), Vertical Synchronization signal (VSYNC signal), Display Enable signal (DE signal), citron signal (CLK signal), and pixel data signal (Pixel) Data signal) and so on. The digital video interface transmitter 20 includes a plurality of encoders and a plurality of transmission channels. As shown in the first figure, the clock signal transmission channel is used to send the Japanese signal to the digital video interface receiver 4〇. At the same time, the horizontal synchronization signal, the residual synchronization city, the display enable signal, and the pixel data signal are also sent by the digital video interface transmitter 2G, for example, through the n# transmission wanted (where η is an integer from 〇 to 5) to send the channel. Signal. In another aspect, the digital video interface receiver includes a plurality of receiving channels for receiving different signals sent by the transmitting channel. For example, _ receiving turns over the signal sent by the receiving exposure channel, and the 1# receiving channel is used to receive the signal sent by the transmitting channel, and the pulse is reduced by the _ _ sending the transmitted clock signal. Each channel is included with the corresponding _, which is used to decode the "received" from the corresponding receiver. For example, _ decodes the signal from the (10) receiving channel connected to the 1##_道(4). _ code off 5# touch can output the decoded horizontal synchronization: vertical TO number, Xianqing coffee and _ axis. The crystal oscillator is used to provide a reference clock signal. 10 ’ includes mode The digital video interface receiver 4G further includes an offline mode eliminator 8 9 1260163 detecting unit 12, a clock signal detecting unit 14 and a power-off control unit π. First, the clock signal gravitation element U is called from the day _ _ _ _ channel, and it is determined whether the clock signal is valid and normal. For example, the change of the clock signal can be roughly calculated in a predetermined period _ Whether the clock signal is within the predetermined resolution (eg: 25MHz~16»). If the clock signal sister is positive and f, _ lose fresh element 16 will start 0# receiving this and G# decoder ' 〇 #狐 channel will reduce the signal transmitted from the Q# transmission channel, and then send the secret _ suspension to decode, from Cap code Caiping _ shouting and vertical sync signal. On the other hand, in the above-mentioned side carving, if the side unit 14 side is less than the normal clock signal, the power-off control unit 16 will turn off the mode detecting unit 12 and all the receiving channels within the predetermined time interval. To save power consumption. Once the 0# receiving channel is activated, the mode sensing unit 12 determines the operating mode according to the state of the decoded horizontal sync city and the vertical sync signal on the detected 〇# receiving channel, so that the operation mode is very short. The time synchronization (eg, 1 millisecond (miUisec〇nd)) reads the horizontal sync minus the money sync signal. If both the horizontal synchronizing signal and the residual synchronizing signal are valid and normal, the power-off control unit 16 maintains the activation state of the 接收# receiving channel, and can decide whether to further activate other receiving channels according to the display mode and the display frequency. The display mode can be determined according to the calculation of the number of displayed lines or the calculation of display pixels. In the digital view §fl interface system 1, there are six transmission channels and six receiving channels, wherein the 〇# receiving channel to the 2# receiving channel are respectively used for transmitting and receiving red, green and blue video signals. In the case of lower resolution, for example, the resolution is less than 128 〇χ; [〇24, and when the display frequency is lower than 60 Hz, only the 0# receiving pass to the 2# receiving channel is required to transmit the display signal, so The power 8 10 1260163 control unit 16 only needs to start (10) the receiving channel to the 2# receiving channel and the other channels to save power. On the other hand, in the case of higher resolution, for example, when the resolution is face' and the display frequency is 7, the power-off control unit 16 activates all the _ reception channels to the 5# reception channels. If the mode side unit 12 has no side effect and the horizontal sync signal of the positive f and the vertical sync signal 'Zhejiang clock signal side unit 14 detect the correct_pulse signal, the power-off control unit 16 still repays all the receiving channels. Entering people - paragraphs to save electricity. In the preferred embodiment, the mode detecting unit 12 determines whether the video signal is valid and normal by extracting the mode of the 0# receiving channel. However, it should be noted here that the mode side unit 12 can also determine other aspects of the camera according to the actual needs, so that the video signal of the Facebook is effective and normal; 12 It can detect the display enable signal on any receiving channel, instead of only detecting the horizontal sync signal and vertical sync signal on the _ receive channel. Anyone who knows the technology can perform digital processing on the display enable signal on any receiving channel, and can also obtain the video signal by detecting the horizontal sync signal and the vertical sync signal; the mode detection unit η The timely pulse signal detecting unit 14 sends the detected video signal to the power-off control unit 16, and the power-off control unit 16 controls the 接收# receiving channel to the 5# receiving channel's 通道# channel control signal to the 5# channel control. Signal in response to the received message. Whether the mode is valid and normal can be obtained by comparing the received message with a pre-loaded message lookup table (not shown), and the information query table records a plurality of valid and normal mode related information, such as Pulse signal frequency 'display resolution and display frequency 8 11 1260163 :, but not only clear _ 补 paste kiss axis valid and positive (four) horizontal sync signal and vertical sync signal, the new power mode control unit μ can also be in the above preview The clock signal receiving channel is closed within the time interval. The second figure reveals the digital video interface system of the present invention. The difference is that the digital video interface system further includes a control unit (5) (10) C input 〇 _, Μ (8) (10), The micro-control single 7 is immersed in a thin face 4G, the towel Laijia_2, the clock is simple and early, and the power-off control is 16th. The operation commission can be interpreted according to the user's instructions. , 峨 (4) Wait for two, time, then when the standby waiting time arrives, the micro control unit 6Q can turn off the digital visual interface receiver 40'. The transfer side of the invention is 1G, which can periodically judge the digital video signal of her age (4), for example, by using the water channel, vertical and the same number, displaying the enable signal and the pixel data signal. When the digital stereo transfer transmitter 2 is detected. After the valid clock signal is sent, the copper result of the measurement unit 14 is stepped into the operation of the video signal. Then, the electrical control unit 16' determines whether it is necessary to start the channel to the subsequent channel according to the result of the clock signal detecting unit 14 and the mode detecting unit 12. Therefore, in the digital video interface system 1, the overall power consumption in the standby detection mode is greatly reduced, and the life and performance of the digital video interface system are improved. In addition, the offline mode detection 8 12 1260163 can It is controlled by the magnetic "quote", which can meet the specific requirements of the user. The third figure is a flow chart for explaining a method for detecting a offline mode of a video interface according to a preferred embodiment of the present invention, including the following steps: Step 100: Start offline mode detection. V1Q2 ·Check the validity and frequency of the day ceremony. If the clock signal received from the receiving channel is valid and normal, the service proceeds to step ·, otherwise repeats step ι〇2. The partial (4) may be 1 () () milliseconds, and the preferred copper time is substantially twice as large as the period of the vertical sync signal (e.g., 40 milliseconds). Step 104: Start the 0# receiving channel. Step 106: Measure the validity and period of the horizontal sync signal, the vertical sync signal, and the display disable signal on the 0# receiving channel. If the video signal is valid and normal, then the flow proceeds to step 108, otherwise to step 110. Step 108: Start a plurality of receiving channels in response to the correct display mode. The flow advances to step 112. Step 110: Turn off (10) the receiving channel to the 5# receiving channel for 900 milliseconds, and then return to step 100. Step 112: End. Referring to the first and fourth figures, the fourth figure shows the startup of the 0# receiving channel and the closing of the 0# receiving channel to the 5# receiving channel in the offline mode detecting method of the present invention. First, the power-off control section 16 activates the 0# receiving channel so that the mode detecting unit 12 judges the operation mode of the 接收# receiving channel within a certain time interval of a very short 8 13 1260163 (e.g., ln iUU pen seconds). If the operation mode of the 0# receiving channel is valid and normal, the interrupt_unit 16 maintains the start state of the receive and can initiate other receive channels as needed. If (10) the operation mode of the receiving channel is invalid, the power-off control unit 16 will turn off all receiving channels - a longer time interval (eg, coffee milliseconds), in order to achieve better power saving effect, it can be k For the phase of the program, since the gamma time required for the clock signal (usually 2 2 seconds) is much shorter than the time required for the side view signal, the detection time of the clock signal can be ignored. - In the above embodiment of the invention, the side time (channel on time) is set to about (10) milliseconds, and the standby time (channel off time) is set to about a millisecond, and both of the above times can be adjusted according to actual conditions. . Usually gamma _ should be greater than twice the number of times it is detected. Repair, vertical synchronization shouting test Zhou Lin 4_,, the signal mode detection time should be greater than 8 〇 milliseconds. Compared with the prior art, the method for detecting the offline mode of the digital video interface of the present invention does not need a continuous mode of non-side video, but only reports a short copper time signal state, so that a small number of communication interfaces can be called. The operating time of the line (eg, the age-based video interface chip) reduces the power consumption of the chip. For example, in offline mode, the consumption can be reduced to 1/30 of the original, and the short operation time and low power consumption make the life and stability of the digital video interface chip greatly improved. The invention discloses a square ship with a side digital Wei interface and a digital video interface touch related to the method, and the digital video interface (4) includes a plurality of receiving 8 14 1260163 channels, a clock signal receiving channel and an offline mode. The detector can receive the IfUfU tiger, and the clock signal is received to receive the clock signal, and each receiving channel includes a decoding 3' for decoding the signal on the subtraction channel. The mode side device is electrically connected to the clock signal receiving channel and the decoder, and the validity of the side clock signal determines whether it is necessary to turn on at least the receiving channel in the ith set time. The offline mode side device includes a mode extraction unit, a clock signal unit, and a power failure control unit. The power-off control unit adjusts the opening and closing of the side-locking control channel according to the mode of the unit. When the debt measurement result is invalid, the power-off control unit will close all receivers and solve the problem in the second preset time interval. Hey. The second-level erection interval is much longer than the first-preset _ interval. In summary, the present invention has indeed met the requirements of the invention patent, and the above-mentioned patent application is the preferred embodiment of the present invention, and those skilled in the art are assisted by the present invention. Equivalent modifications or variations made by the spirit of the invention are covered by the appended claims. [Simple description of the diagram] The first picture is the functional paste of the Weiwei video (4) system, the digital video interface includes a digital video interface receiver, and the digital video interface receiver includes an offline mode. Detector. The second figure is a functional block diagram of another embodiment of the coefficient video interface system, the digital video interface system including a digital video interface receiver. The third picture is a flow chart of the method of the present day (10). The fourth picture is a schematic diagram for saying that the video interface is in the offline mode. _ 8 15 1260163 Time and standby time allocation [Main component symbol description] Digital video interface system mode detection unit power failure control unit digital Video Interface Receiver Offline Mode Detector 10 12, 12' Clock Signal Detection Unit 14 16, 16' Digital Video Interface Transmitter 20 10, 14, 20, 40, 40' Microcontroller 60, Crystal Oscillator 70 , 70'
⑧ 168 16