200846969 九、發明說明： / _【發明所屬之技術領域】 本發明係關於一種液晶顯示裝置及其防盜方法。 【先前技術】 目前，液晶顯示裝置逐漸取代陰極射線管顯示裝置用 於個人電腦、電視等設備。惟，液晶顯示裝置具輕、薄等 特點，使其易被他人盜走，且被盜之液晶顯示裝置可正常 使用，從而盜竊者可將該液晶顯示裝置順利銷贓而獲取一 *定非法收入，其從一定程度上促使盜竊者進一步的犯罪。 【發明内容】 有鑑於此，提供一種具防盜功能之液晶顯示裝置實為 必要。 另，提供上述液晶顯示裝置之防盜方法亦為必要。 一種液晶顯示裝置，其包括一 OSD單元、一韌體單 元、一防盜識別端子及一微處理單元。該OSD單元包括一 0防盜功能選項。該韌體單元包括一防盜程式。該微處理單 元識別該防盜識別端子及該防盜功能選項之狀態，並依據 其有效狀態輸出相應控制訊號控制該防盜程式之啟動。 一種液晶顯示裝置防盜方法，其包括以下步驟：藉由 OSD單元開啟防盜功能，密碼確認標誌置為有效；微處理 單元檢測防盜識別端子之狀態，賦予防盜程式啟動標誌有 效值；微處理單元檢測密碼確認標誌與防盜程式啟動標誌 狀態，依據其有效狀態啟動防盜程式，要求輸入用戶密碼； 微處理單元比較輸入之用戶密碼與密碼記憶單元存儲之安 6 200846969 全密碼是否-致，並依據密碼比較結果輸出控制訊號，控 制液晶顯示裝置正常顯示或關閉。 U二 本發明之液晶顯示裝置及該液晶顯示裝置之防盜方法 可開啟該液晶顯示裝置之防盜功能並存儲一安全密碼，於 該液晶顯示裝置之資料線被拔除後將防盜程式啟^標語置 為有效，當該液晶顯示m下—次使用之時，啟動防次 :式，要求輸入用戶密碼，合法用戶可輪入與安全密碼一 致之用戶密碼而使該液晶顯示裝置正常顯示，而非 ===全密碼一致之用戶密碼，導致該液晶顯示 而失去使用價值，該液晶顯示裝置 贓丽景不佳，進而使盜竊者打消盜竊念頭，其 王又降低液晶顯示裝置被盜之可能性。 【實施方式】 之4= V系本發明液晶顯示裝置一較佳實施方式 口：=理？液晶顯示裝置1包括-顯 -圖像輸出單元16、一 0SD單元早備用電源15、 液晶顯示梦署彳！ — α 兀18及—顯示介面19。該 (圖未示），哕兩调垃一山 （3未不）及一電源模塊 电/原接口猎由一電源線連接至一外邻雨调， ;亥_罐部電源所提供之電壓轉換為4:二 斤而之工：電璧’以使該液晶顯示裝置 邊顯不訊號輸入接口 10接收— 顯示訊號，並將該顯示訊梦僖、矣 、（圖未不）所產生之 圖像輪出單开16:/、σ A、1"至该圖像輸出單元16。該 出早儿16對該顯示訊號進行轉換後傳送至該顯示 200846969 介面19進行相應内容顯示。該〇SD單元i8包括— 控制介面180、一 OSD菜單控制單元182及_ 〇sd &。口 =單元m。該微處理單以2、㈣體單心、該= 輸，元、該OSD菜單控制單元182及該⑽ 生早』4集成於該液晶顯示裝置工内部之_電路板 示):該OSD控制介S 18”置於該液晶顯示裝置丄之二 ^工連接至$玄液晶顯不裝置1内部之〇SD菜單㈣單元 該顯示訊號輸入接口 1〇係_ DVI_D接口，1 十四個導電端子。該主機 ，、匕括一 2顯不訊號輸出接口（圖未示），其亦包括二十四個導電 ::一貧料線(圖未示)連接該顯示訊號輸入接口 10及： 接二該資料線之末端分別有對應該顯示訊 由1電端：盘：、§亥顯不訊號輸出接口之二十四個針腳，藉 接口：之二十腳：連接進行訊號傳輸。該顯示訊號輪入 訊號，如tT純㈣料輸之相關顯示 币“唬、水平同步訊號及垂直同步訊號等， *置V电端子一般不接收顯示訊號，其連接至該 板塊之一電壓給ψ # ^ .V _ “、 生裝置連接德號輸入接口10與訊號發 該導電端子之導1::"發生裝置：顯示訊號輸出接口對應 後，' 子為接地狀態，藉由資料線將其連接 :2不訊號輸入接口10之該導電端子處為 義孩閑置之導電端早岌+ ^ 器12之一私 為防益識別鳊子，其連接於該微處理 雨入端，該液晶顯示裝置i正常工作時，該輸入 8 200846969 端經該資料線接地，其即為低電平狀態。 / 該韌體單元13包括一非易失性記憶體，其存儲有一開 曾 機自檢程式及一防盜程式，該韌體單元13還包括一設置於 該非易失性記憶體中之密碼記憶單元、一密碼確認標誌記 憶單元及一防盜程式啟動標誌記憶單元。該韌體單元13 還可包括該液晶顯示裝置1相關顯示控制程式。該密碼記 憶單元存儲一安全密碼，該安全密碼可於該液晶顯示裝置 1製造時設定一初始值，即設定一初始安全密碼。該密碼 *確認標誌記憶單元所存儲之數位訊號表明該液晶顯示裝置 1之安全密碼是否有效，即防盜功能是否開啟，其初始設 置為有效。該防盜程式啟動標誌記憶單元所存儲之數位訊 號表明是否啟動防盜程式。該用戶嘧碼及密碼確認標誌記 憶單元所存儲之數位訊號可由用戶修改，而該防盜程式啟 動標誌記憶單元所存儲之數位訊號由該微處理單元12依 據防盜識別端子之狀態相應輸出。 • 該OSD控制介面180係一鍵輸入單元，其用於用戶輸 入對該液晶顯示裝置1之顯示特性參數或特殊選項等功能 控制目標進行調節之訊號，如輝度、對比度及語言等，其 中各功能控制目標之調節資料分別存儲於對應之記憶體， 該液晶顯示裝置1之防盜程式啟動或關閉及修改安全密碼 等調節亦存儲於其對應之記憶體。該OSD菜單控制單元 182識別水平同步訊號及垂直同步訊號，並依據該OSD控 制介面180輸入之顯示參數調解訊號輸出選擇訊號及調節 資料，並將該選擇訊號及調節資料輸入至該OSD菜單產生 9 200846969 單元184。該OSD菜單產生單元184依據所接收之選擇訊 號及調節資料輸出對應於各功能控制目標之OSD顯示訊 號，以便將選定之功能控制目標作為OSD菜單顯示於該顯 示介面19。 合法用戶可始終將該密碼確認標誌置為有效，或者於 離開該液晶顯示裝置1時將該密碼確認標誌置為有效，開 啟該液晶顯示裝置1之防盜功能。 藉由該OSD控制介面180選擇開啟防盜功能，該OSD 控制介面180輸出相應選擇訊號至該OSD菜單控制單元 182。該OSD菜單控制單元182依據該選擇訊號選擇防盜 功能為控制目標，並輸出相應選擇訊號及調節資料至該 OSD菜單產生單元184及對應之記憶體，該OSD菜單產 生單元184輸出相應顯示訊號至該顯示介面19進行菜單顯 示，提示合法用戶其正在進行開啟該液晶顯示裝置1之防 盜功能。 該OSD菜單控制單元182亦將該選擇訊號及調節資料 輸出至該微處理單元12。該微處理單元12檢測該密碼確 認標誌當前之狀態，若密碼確認標誌當前之狀態為有效， 則該微處理單元12依據該選擇訊號及調節資料產生密碼 確認訊號，並依據該用戶識別訊號輸出用戶識別對話框並 於該顯示介面19進行相應顯示，要求輸入甩戶密碼。 藉由外部鍵輸入裝置輸入用戶密碼至該微處理單元 12,該微處理單元12比較該用戶密碼與存儲於密碼記憶單 元之安全密碼，若該用戶密碼與該安全密碼一致，該微處 200846969 理單元12輸出相應控制訊號，使該密碼確認標誌保持為有 效。若輸入用戶密碼錯誤時，則該密碼確認標誌保持當前 狀態。 若該微處理單元12接收該OSD菜單控制單元182輸 出之選擇訊號及調節資料時檢測該密碼確認標誌為無效， 則產生安全密碼設定訊號，要求用戶設定安全密碼，同時 將該密碼癌認標誌、置為有效。 關閉防盜功能與開啟防盜功能之過程較為相似。當該 微處理單元12接收該OSD菜單控制單元182輸出之關閉 防盜功能之相關選擇訊號及調節資料時，若檢測該密碼確 認標誌為無效，則保持該密碼確認標誌當前之無效狀態； 若檢測該密碼確認標誌為有效，則要求輸入用戶密碼，若 合法用戶輸入用戶密碼與安全密碼一致，則該微處理單元 12輸出相應控制訊號至該韌體單元13之密碼確認標誌記 憶單元，將該密碼確標誌置為無效。 另，修改安全密碼與開啟防盜功能之過程亦較為相 似。在當前密碼確認標誌為有效時，需輸入用戶密碼及設 定密碼，該微處理單元12比較該用戶密碼與該密碼記憶單 元存儲之安全密碼一致後，才會將輸入之設定密碼傳輸至 該韌體單元13之密碼記憶單元，將該設定密碼設定為新的 安全密碼而取代原來之安全密碼。在當前密碼確認標誌為 無效時，則只需輸入設定密碼。 當該液晶顯示裝置1被盜時，連接至該微處理單元12 一輸入端之防盜識別端子因資料線被拔除而與主機斷開， η 200846969 從而亦與接地端斷開，此時該防盜識別端子即連接至該電 源模塊之一電壓輸出端，使該微處理單元12連接至該防盜 識別端子之輸入端所接收訊號由低電平變化為高電平，該 微處理單元即賦予防盜程式啟動標誌為有效。若該液晶顯 示裝置1之電源線先於該資料線被拔除，該備用電源15 於電源線被拔除後自動為該微處理單元12及該韌體單元 13供電’使該微處理单元12及該動體早元13繼績工作一 段時間後再關閉，且該時間足夠使該微處理單元12識別該 防盜識別端子之電平變化及使該韌體單元13之防盜程式 啟動標誌為有效。該備用電源15可為一電池或一不斷電電 源系統（Uninterruptible Power System，UPS)。 當該液晶顯示裝置1再次加電使用時，該液晶顯示裝 置1之微處理單元12於接通電源後啟動該開機自檢程式， 檢測防盜程式啟動標誌及密碼確認標誌是否有效。因該液 晶顯示裝置1之密碼確認標誌及防盜程式啟動標誌已置為 有效，從而該防盜程式被啟動，於顯示介面19顯示用戶識 別對話框，要求輸入用戶密碼並確認。 藉由該外部鍵輸入裝置輸入用戶密碼，該微處理單元 12接收所輸入之用戶密碼後，讀取存儲於該密碼記憶單元 之安全密碼，並將該用戶密碼與該安全密碼進行比較。若 該用戶密碼與該安全密碼一致，則該微處理單元12輸出正 常顯示指令至該圖像輸出單元16。若該用戶密碼與安全密 碼不相同，則藉由顯示介面19提示用戶密碼輸入錯誤，並 要求再次輸入用戶密碼，同時使用戶密碼輸入次數加一。 12 200846969 若連續輸入用戶密碼次數小於或者等於五次，且最後一次 所輸入之用戶密碼與安全密碼相符，則該微處理單元12 亦輸出正常顯示指令至該圖像輸出單元16，使該液晶顯示 裝置1正常顯示。 若連續輸入用戶密碼次數超過五次，且均與安全密碼 不符，則該微處理單元12輸出關閉顯示裝置指令至該圖像 輸出單元16，使顯示訊號無法正常輸出，或者該微處理單 元12執行一死循環程式，於該顯示介面19進行特定顯示， 如顯示黑屏或白屏等，使顯示訊號無法正常顯示。若關閉 該液晶顯示裝置1後重新啟動，仍重複上述動作，直至其 輸入之用戶密碼與安全密碼一致。 請參閱圖2，係圖1所示液晶顯示裝置1之液晶顯示 裝置防盜方法之流程圖。該液晶顯示裝置防盜方法包括以 下步驟： 步驟S1 :藉由OSD單元18開啟防盜功能，密碼確認 標誌置為有效； 合法用戶正常使用該液晶顯示裝置1時，可藉由該 OSD單元18啟動該液晶顯示裝置1之防盜功能。藉由該 OSD控制介面180選擇開啟防盜功能，該OSD控制介面 180輸出相應選擇訊號至該OSD菜單控制單元182。該OSD 菜單控制單元182依據該選擇訊號選擇防盜功能為控制目 標，並輸出相應選擇訊號及調節資料至該OSD菜單產生單 元184及對應之記憶體，該OSD菜單產生單元184依據該 選擇訊號及調節資料輸出相應顯示訊號至該顯示介面19 13 200846969 進行菜單顯示，提示合法用戶其正在進行開啟該液/晶顯示 _ 裝置1之防盜功能。 該OSD菜單控制單元182亦將該選擇訊號及調節資料 輸出至該微處理單元12。該微處理單元12檢測該密碼確 認標誌當前之狀態，若密碼確認標誌當前之狀態為有效， 則該微處理單元12依據該選擇訊號及調節資料產生密碼 確認訊號，並依據該用戶識別訊號輸出用戶識別對話框並 於該顯示介面19進行相應顯示，要求輸入用戶密碼。 藉由外部鍵輸入裝置輸入用戶密碼至該微處理單元 12,該微處理單元12比較該用戶密碼與存儲於密碼記憶單 元之安全密碼，若該用戶密碼與該安全密碼一致，即輸入 之用戶密碼與安全密碼相符時，該微處理單元12輸出相應 控制訊號’使該密瑪確認標諸保持為有效。若輸入用戶密 碼錯誤時，則該密碼確認標誌保持當前狀態。 若該微處理單元12接收該OSD菜單控制單元182輸 |出之選擇訊號及調節資料時檢測該密碼確認標誌為無效， 則產生安全密碼設定訊號，要求用戶設定安全密碼，同時 將該密碼確認標誌置為有效。 步驟S2 :微處理單元12檢测防盜識別端子之狀態， 賦予防盜程式啟動標誌有效值； 當盜竊者盜走該液晶顯示裝置1時，必定會拔除電源 線及資料線，當電源線被拔除時，電源被切斷，該備用電 源自動投入，繼續為該微處理單元12及該韌體單元13供 應電源，使該微處理單元12及該韌體單元13繼續工作一 14 200846969 段時間。當該液晶顯示裝置1之資料線被拔徐時，/該顯示 -訊號輸入接口 10之防盜識別端子與訊號發生裝置之相應 .接地端斷開，藉由連接至該防盜識別端子之電源，該微處 理12連接至該防盜識別端子之輸入端所接收訊號由 低包平k化為高電平’進而賦予該防盜程式啟動標誌有效 值。 、v驟S3 ·微處理單元12檢測密碼嫁認標誌與防盜程 式啟動枯_狀怨，依據其有效狀態啟動防盜程式，要求輸 入用戶密碼； 田非法用戶欲使用該液晶顯示裝置1時，該微處理單 =2於接通電源後啟動該«自檢程式，檢測密碼確認標 程式啟動標諸是否有效，並輸出相應檢測結果。 二屮龄1有效時’該微處理單S 12輸出啟動訊號，否則不 輸出啟動訊號。兮料♦ οσ 一 程式啟動㈣有;依據密碼確認標諸及防盜200846969 IX. Description of the invention: / _ [Technical field to which the invention pertains] The present invention relates to a liquid crystal display device and an antitheft method therefor. [Prior Art] At present, liquid crystal display devices are gradually replacing cathode ray tube display devices for personal computers, televisions and the like. However, the liquid crystal display device is light and thin, so that it is easily stolen by others, and the stolen liquid crystal display device can be used normally, so that the thief can successfully sell the liquid crystal display device and obtain a certain illegal income. It has prompted the thief to commit further crimes to a certain extent. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a liquid crystal display device with an antitheft function. Further, it is also necessary to provide an antitheft method for the above liquid crystal display device. A liquid crystal display device includes an OSD unit, a firmware unit, an anti-theft identification terminal, and a micro processing unit. The OSD unit includes a 0 anti-theft feature option. The firmware unit includes an anti-theft program. The micro-processing unit identifies the state of the anti-theft identification terminal and the anti-theft function option, and outputs a corresponding control signal according to the effective state to control the activation of the anti-theft program. A liquid crystal display device anti-theft method includes the following steps: the password confirmation flag is set to be effective by the OSD unit turning on the anti-theft function; the micro-processing unit detects the state of the anti-theft identification terminal, and gives the anti-theft program startup flag valid value; the micro processing unit detects the password Confirmation flag and anti-theft program start-up flag status, start anti-theft program according to its valid state, request to input user password; Micro-processing unit compares input user password and password memory unit storage security 6 200846969 Full password--, and compare results according to password The control signal is output to control whether the liquid crystal display device is normally displayed or turned off. The liquid crystal display device of the present invention and the anti-theft method of the liquid crystal display device can turn on the anti-theft function of the liquid crystal display device and store a security password. After the data line of the liquid crystal display device is removed, the anti-theft program is set to the slogan. Valid, when the liquid crystal display m is used next time, the anti-secondary mode is activated, and the user password is required to be input, and the legal user can turn in the user password consistent with the security password to make the liquid crystal display device display normally, instead of == = The password of the user with the same password causes the liquid crystal display to lose its use value. The liquid crystal display device is not good, and the thief can eliminate the theft, and the king reduces the possibility of the liquid crystal display device being stolen. [Embodiment] 4 = V is a preferred embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 1 includes a display-image output unit 16, an 0SD unit early backup power supply 15, and a liquid crystal display system. — α 兀 18 and — display interface 19. The (not shown), 哕 two adjustments of a mountain (3 not) and a power module electric / original interface hunting connected by a power cord to an external rain,; Hai _ tank power supply voltage conversion 4: two pounds of work: electric 璧 'to enable the liquid crystal display device to display the signal input interface 10 to receive - display signals, and display the image of the nightmare, 矣, (not shown) Turning out the single opening 16::, σ A, 1 " to the image output unit 16. The early morning 16 converts the display signal and transmits it to the display 200846969 interface 19 for corresponding content display. The UI unit i8 includes a control interface 180, an OSD menu control unit 182, and _ 〇 sd & Port = unit m. The micro-processing unit has 2, (4) body single core, the = input, the element, the OSD menu control unit 182, and the (10) raw early 4 integrated in the liquid crystal display device internal circuit board display: the OSD control medium The S 18" is placed in the liquid crystal display device and connected to the inside of the $LCD display device. The SD menu (4) unit displays the signal input interface 1 D DVI_D interface, and 14 conductive terminals. The host computer includes a 2-signal output interface (not shown), which also includes twenty-four conductive: a lean line (not shown) connected to the display signal input interface 10 and: At the end of the line, there are respectively corresponding to the signal: 1 electric terminal: disk: § hai display no signal output interface of 24 pins, by interface: 20 feet: connection for signal transmission. The display signal wheel signal For example, tT pure (four) material input related display currency "唬, horizontal sync signal and vertical sync signal, etc., * set V electric terminal generally does not receive display signal, it is connected to one of the plates voltage ψ # ^ .V _ " And the device is connected to the input port 10 of the signal and the signal is sent to the conductive terminal Guide 1::"Generation device: After the display signal output interface is corresponding, the 'sub-ground state is connected by the data line: 2 the non-signal input interface 10 is the conductive terminal at the conductive terminal. One of the devices 12 is a security identification tweezers connected to the micro-processing rain input end. When the liquid crystal display device i is in normal operation, the input 8 200846969 is grounded via the data line, which is a low level state. The firmware unit 13 includes a non-volatile memory that stores an open self-test program and an anti-theft program. The firmware unit 13 further includes a password memory disposed in the non-volatile memory. The unit, a password confirmation mark memory unit and an anti-theft program start flag memory unit. The firmware unit 13 may further include a display control program associated with the liquid crystal display device 1. The password memory unit stores a security password, the security code may be When the liquid crystal display device 1 is manufactured, an initial value is set, that is, an initial security code is set. The password* confirms that the digital signal stored in the memory unit indicates the security of the liquid crystal display device 1. Whether the full password is valid, that is, whether the anti-theft function is enabled, and the initial setting is valid. The anti-theft program starts the digital signal stored by the memory unit to indicate whether to start the anti-theft program. The user's micro-code and password confirmation mark the digital signal stored by the memory unit. It can be modified by the user, and the digital signal stored by the anti-theft program activation flag memory unit is output by the micro processing unit 12 according to the state of the anti-theft identification terminal. • The OSD control interface 180 is a key input unit for user input pair The function of the display characteristic parameter or the special option of the liquid crystal display device 1 controls the target to adjust the signal, such as brightness, contrast and language, wherein the adjustment data of each function control target is stored in the corresponding memory, and the liquid crystal display device 1 The anti-theft program starts or closes and changes the security password and other adjustments are also stored in its corresponding memory. The OSD menu control unit 182 identifies the horizontal synchronization signal and the vertical synchronization signal, and outputs a selection signal and adjustment data according to the display parameter adjustment signal input by the OSD control interface 180, and inputs the selection signal and the adjustment data to the OSD menu to generate 9 200846969 Unit 184. The OSD menu generating unit 184 outputs an OSD display signal corresponding to each function control target according to the received selection signal and the adjustment data, so that the selected function control target is displayed on the display interface 19 as an OSD menu. The legal user can always set the password confirmation flag to be valid, or set the password confirmation flag to be valid when leaving the liquid crystal display device 1, and turn on the anti-theft function of the liquid crystal display device 1. The anti-theft function is selected by the OSD control interface 180, and the OSD control interface 180 outputs a corresponding selection signal to the OSD menu control unit 182. The OSD menu control unit 182 selects the anti-theft function as the control target according to the selection signal, and outputs the corresponding selection signal and adjustment data to the OSD menu generation unit 184 and the corresponding memory. The OSD menu generation unit 184 outputs the corresponding display signal to the The display interface 19 displays a menu indicating that the legitimate user is performing the anti-theft function of the liquid crystal display device 1. The OSD menu control unit 182 also outputs the selection signal and adjustment data to the micro processing unit 12. The micro processing unit 12 detects the current status of the password confirmation flag. If the current status of the password confirmation flag is valid, the micro processing unit 12 generates a password confirmation signal according to the selection signal and the adjustment data, and outputs the user according to the user identification signal. The dialog box is recognized and displayed on the display interface 19, and a password for the account is required. The user password is input to the micro-processing unit 12 by the external key input device, and the micro-processing unit 12 compares the user password with the security password stored in the password memory unit. If the user password is consistent with the security password, the micro-location 200846969 Unit 12 outputs a corresponding control signal to keep the password confirmation flag active. If the user password is entered incorrectly, the password confirmation flag remains in the current state. If the micro-processing unit 12 detects that the password confirmation flag is invalid when receiving the selection signal and the adjustment data output by the OSD menu control unit 182, a security password setting signal is generated, and the user is required to set a security password, and the password is recognized. Set to valid. Turning off the anti-theft feature is similar to the process of turning on the anti-theft feature. When the micro processing unit 12 receives the related selection signal and the adjustment data of the anti-theft function output by the OSD menu control unit 182, if the password confirmation flag is detected as invalid, the current invalid status of the password confirmation flag is maintained; If the password confirmation flag is valid, the user password is required to be input. If the user password is the same as the security password, the micro processing unit 12 outputs a corresponding control signal to the password confirmation flag memory unit of the firmware unit 13, and the password is confirmed. The flag is set to invalid. In addition, the process of modifying the security password and opening the anti-theft function are similar. When the current password confirmation flag is valid, the user password and the setting password are input, and the micro processing unit 12 compares the user password with the security password stored by the password memory unit, and then transmits the input setting password to the firmware. The password memory unit of the unit 13 sets the set password as a new security password instead of the original security password. When the current password confirmation flag is invalid, you only need to enter the setup password. When the liquid crystal display device 1 is stolen, the anti-theft identification terminal connected to an input end of the micro processing unit 12 is disconnected from the host due to the data line being removed, and η 200846969 is also disconnected from the ground end, and the anti-theft identification is performed at this time. The terminal is connected to one of the voltage output terminals of the power module, so that the signal received by the microprocessor unit 12 connected to the input end of the anti-theft identification terminal changes from a low level to a high level, and the microprocessor unit activates the anti-theft program. The logo is valid. If the power line of the liquid crystal display device 1 is removed before the data line, the backup power source 15 automatically supplies power to the micro processing unit 12 and the firmware unit 13 after the power line is removed. [The micro processing unit 12 and the The moving body early 13 runs again after a period of time, and the time is sufficient for the micro processing unit 12 to recognize the level change of the anti-theft identification terminal and make the anti-theft program activation flag of the firmware unit 13 valid. The backup power source 15 can be a battery or an Uninterruptible Power System (UPS). When the liquid crystal display device 1 is powered on again, the micro processing unit 12 of the liquid crystal display device 1 activates the power-on self-test program after the power is turned on, and detects whether the anti-theft program startup flag and the password confirmation flag are valid. Since the password confirmation flag and the anti-theft program activation flag of the liquid crystal display device 1 are enabled, the anti-theft program is activated, and the user identification dialog box is displayed on the display interface 19, and the user password is required to be confirmed. After the user password is input by the external key input device, the micro processing unit 12 reads the entered user password, reads the security password stored in the password memory unit, and compares the user password with the security password. If the user password matches the security password, the microprocessor unit 12 outputs a normal display command to the image output unit 16. If the user password is different from the security password, the user interface is prompted to enter a password error through the display interface 19, and the user password is required to be input again, and the user password input number is incremented by one. 12 200846969 If the number of consecutively inputting the user password is less than or equal to five times, and the last entered user password matches the security password, the microprocessor unit 12 also outputs a normal display command to the image output unit 16 to cause the liquid crystal display. Device 1 is normally displayed. If the number of user passwords is continuously input more than five times, and both of them do not match the security password, the micro processing unit 12 outputs a command to turn off the display device to the image output unit 16, so that the display signal cannot be output normally, or the micro processing unit 12 executes An infinite loop program is used to perform a specific display on the display interface 19, such as displaying a black screen or a white screen, so that the display signal cannot be displayed normally. If the liquid crystal display device 1 is turned off and then restarted, the above operation is repeated until the user password entered is the same as the security password. Referring to FIG. 2, a flow chart of the anti-theft method of the liquid crystal display device of the liquid crystal display device 1 shown in FIG. The anti-theft method of the liquid crystal display device includes the following steps: Step S1: The password confirmation flag is enabled by the OSD unit 18 to enable the anti-theft function; when the liquid crystal display device 1 is normally used by a legitimate user, the LCD can be activated by the OSD unit 18. The anti-theft function of the display device 1. The anti-theft function is selected by the OSD control interface 180, and the OSD control interface 180 outputs a corresponding selection signal to the OSD menu control unit 182. The OSD menu control unit 182 selects the anti-theft function as a control target according to the selection signal, and outputs a corresponding selection signal and adjustment data to the OSD menu generating unit 184 and the corresponding memory. The OSD menu generating unit 184 is configured according to the selection signal and the adjustment. The data output corresponding display signal to the display interface 19 13 200846969 for menu display, prompting the legitimate user that it is opening the liquid/crystal display _ device 1 anti-theft function. The OSD menu control unit 182 also outputs the selection signal and adjustment data to the micro processing unit 12. The micro processing unit 12 detects the current status of the password confirmation flag. If the current status of the password confirmation flag is valid, the micro processing unit 12 generates a password confirmation signal according to the selection signal and the adjustment data, and outputs the user according to the user identification signal. The dialog box is recognized and displayed on the display interface 19, and a user password is required. The user password is input to the micro processing unit 12 by the external key input device, and the micro processing unit 12 compares the user password with the security password stored in the password memory unit. If the user password is consistent with the security password, the user password is input. When the security code matches, the microprocessor unit 12 outputs a corresponding control signal 'to keep the MME confirmation flag valid. If the user password is entered incorrectly, the password confirmation flag remains in the current state. If the micro-processing unit 12 receives the selection signal and the adjustment data outputted by the OSD menu control unit 182, and detects that the password confirmation flag is invalid, a security password setting signal is generated, and the user is required to set a security password, and the password confirmation flag is simultaneously Set to valid. Step S2: the micro-processing unit 12 detects the state of the anti-theft identification terminal, and gives the anti-theft program activation flag effective value; when the thief steals the liquid crystal display device 1, the power cable and the data line are unplugged, when the power cable is removed The power supply is cut off, the standby power supply is automatically input, and the micro processing unit 12 and the firmware unit 13 are continuously supplied with power, so that the micro processing unit 12 and the firmware unit 13 continue to operate for a period of time of 2008. When the data line of the liquid crystal display device 1 is pulled out, the anti-theft identification terminal of the display-signal input interface 10 is disconnected from the signal generating device. The ground terminal is disconnected, and the power is connected to the anti-theft identification terminal. The signal received by the microprocessor 12 connected to the input end of the anti-theft identification terminal is converted from a low level to a high level, thereby giving the anti-theft program startup flag a valid value. Step S3 · The micro processing unit 12 detects the password marry flag and the anti-theft program to start the blame, and activates the anti-theft program according to the valid state, and requires the user password to be input; when the illegal user wants to use the liquid crystal display device 1, the micro-processing unit The processing order = 2 starts the «self-testing program after the power is turned on, detects whether the password is activated, and outputs the corresponding detection result. When the second age 1 is valid, the micro-processing single S 12 outputs a start signal, otherwise the start signal is not output. ♦ ♦ οσ a program start (four) yes; according to the password confirmation and anti-theft
介面19鞀-士 @ 動亚執行該防盜程式，於該顯示 示信息及對純，要求輪入用戶密碼， 5亥用戶费碼可藉由外部鍵輸入單元輸入。 士己产以驟.微處理單元12比較輸人之用戶密碼盘穷碼 Κ思早兀存儲之安全宓 、， 山3只在碼 輸出控制訊號，押制：曰： ’亚依據密碼比較結果 該微處理單St裝置1正常顯示或關閉。 取存儲於該密^好輸人之用戶密碼，並讀 遠安全密碼並輪出密 ：，亥用戶密碼及 碼比較結果輸出相廍 、° 微處理皁元12依據密 出相應控制訊號至該圖像輸出單元16。若用 15 200846969 戶密碼與安全密碼一致，則輸出正常顯示控制訊號，該圖 像輸出單元16對該顯示訊號進行正常轉換後輸出至該顯 示介面19 ;若用戶密碼與安全密碼不一致，則輸出關閉液 晶顯示裝置1之控制訊號，該圖像輸出單元16無法正常轉 換顯示訊號，於該顯示介面19進行錯誤顯示，如顯示黑屏 或白屏等，使該液晶顯示裝置1無法正常工作。 本發明之液晶顯示裝置1及該液晶顯示裝置1之防盜 方法於液晶顯示裝置1之内部設置防盜程式，當該液晶顯 示裝置1被盜時，藉由防盜識別端子識別該液晶顯示裝置 1該被盜之動作，並藉由該微處理單元12使防盜程式啟動 標誌置為有效，當非法用戶欲使用該液晶顯示裝置時，該 液晶顯示裝置於加電後藉由開機自檢程式檢測防盜程式啟 動標誌為有效，從而啟動該防盜程式，要求輸入用戶密碼， 非法用戶因無法輸入與安全密碼一致之用戶密碼而使該液 晶顯示裝置1無法正常顯示，從而失去使用價值，使其銷 贓前景不佳，較大程度降低盜竊者之非法所得，使盜竊者 打消行竊念頭，進而可一定程度降低液晶顯示裝置1被盜 之可能性。 惟，本發明並不限於上述實施方式所述，如該韌體單 元13可包括複數非易失性記憶體，該開機自檢程式、該安 全密碼、該密碼確認標誌、該防盜程式啟動標誌及該防盜 程式可分別存儲於不同之記憶體中；該顯示訊號輸入接口 10可以為一 VGA接口或DVI-I接口等；該OSD控制介面 180亦可為一遙控按鍵裝置或個人電腦中使用之鍵盤等， 16 200846969 或觸摸板等非鍵輸入單元；該主 ^ ^ ^ ^ ^ 歲亦可替換為其他類似之 盜識別針腳亦可由顯示訊號輸人接口 ί相多個端子為防盜識別端子，而只 =應^防盜程式即可；該電源接口亦可設置為防盜識 =由識別電社拔除而使㈣盜程式啟動標諸為有 二二㈣示裝置1亦可設置-超級密碼，以使合法用 全密碼時仍可藉由該超級密碼將該密碼確認標諸The interface 19鼗-士@动亚 executes the anti-theft program, and the user information is required to be entered in the display information and the pure code. The 5H user fee code can be input through the external key input unit. The micro-processing unit 12 compares the input password of the input user to the password of the user, and the security code of the memory is output. The mountain 3 only outputs the control signal in the code, and the control: 曰: 'Asia-based password comparison result The micro-processing single St device 1 is normally displayed or turned off. Take the user password stored in the password, and read the remote security password and turn out the secret: the user password and the code comparison result are outputted, and the micro-processing soap element 12 is based on the corresponding control signal to the map. Like output unit 16. If the 15 200846969 user password is consistent with the security password, the normal display control signal is output, and the image output unit 16 outputs the display signal to the display interface 19 after normal conversion; if the user password is inconsistent with the security password, the output is turned off. In the control signal of the liquid crystal display device 1, the image output unit 16 cannot normally convert the display signal, and displays an error on the display interface 19, such as displaying a black screen or a white screen, so that the liquid crystal display device 1 cannot operate normally. The liquid crystal display device 1 of the present invention and the anti-theft method of the liquid crystal display device 1 are provided with an anti-theft program inside the liquid crystal display device 1. When the liquid crystal display device 1 is stolen, the liquid crystal display device 1 is recognized by the anti-theft identification terminal. The anti-theft program activation flag is enabled by the micro-processing unit 12, and when the illegal user wants to use the liquid crystal display device, the liquid crystal display device is activated by the self-test program after detecting the anti-theft program. The flag is valid, so that the anti-theft program is activated, and the user password is required to be input. The illegal user cannot input the user password corresponding to the security password, so that the liquid crystal display device 1 cannot be displayed normally, thereby losing the use value and making the sales prospect poor. The illegal income of the thief is greatly reduced, so that the thief can eliminate the scam, and the possibility of the liquid crystal display device 1 being stolen can be reduced to some extent. However, the present invention is not limited to the above embodiments, and the firmware unit 13 may include a plurality of non-volatile memory, the boot code, the security password, the password confirmation flag, the anti-theft program startup flag, and The anti-theft program can be stored in different memory. The display signal input interface 10 can be a VGA interface or a DVI-I interface. The OSD control interface 180 can also be a remote control button device or a keyboard used in a personal computer. Etc., 16 200846969 or a non-key input unit such as a touchpad; the main ^ ^ ^ ^ ^ can also be replaced with other similar thief identification pins. The display signal input interface can be used as an anti-theft identification terminal, and only = should be anti-theft program; the power interface can also be set to anti-theft identification = removed by the identification of the company to enable (four) piracy program to start with two or two (four) display device 1 can also be set - super password, so that legal use The password can still be marked by the super password when the password is full.
效，以便重新設定安全密碼，該超級密碼由一外部 :置棱供’如該外部裝置可依據該液晶顯示裝置丄之機器 罢说對應生成該超級密碼，該外部裝置係與該液晶顯 置1相互分離。 曰綜上所述，本發明確已符合發明專利之要件，爰依法 提出專利申請。惟，以上所述者僅為本發明之較佳實施方 =，本發明之範圍並不以上述實施方式為限，舉凡熟習本 案技藝之人士援依本發明之精神所作之等效修飾或變化， 鲁皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明液晶顯示裝置一較佳實施方式之結構示咅 圖。 圖2係圖1所示液晶顯示裝置之液晶顯示裝置防盜方法之 流程圖。 【主要元件符號說明】 顯示訊號輸入接口 10 微處理單元 12 章刀體單元 13 圖像輸出單元 κ 17 200846969 OSD單元 18 顯示介面 OSD控制介面 180 OSD菜單控制單元 OSD菜單產生單元 184 備用電源 液晶顯示裝置 1Effectively, in order to reset the security password, the super password is provided by an external device: if the external device can generate the super password according to the device of the liquid crystal display device, the external device is displayed with the liquid crystal. Separated from each other. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application in accordance with the law. However, the above is only the preferred embodiment of the present invention. The scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. Lu should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural view showing a preferred embodiment of a liquid crystal display device of the present invention. Fig. 2 is a flow chart showing the method of preventing theft of the liquid crystal display device of the liquid crystal display device shown in Fig. 1. [Main component symbol description] Display signal input interface 10 Micro processing unit 12 Chapter body unit 13 Image output unit κ 17 200846969 OSD unit 18 Display interface OSD control interface 180 OSD menu control unit OSD menu generation unit 184 Backup power supply liquid crystal display device 1