200909976 PT896 24105twf.doc/n 九、發明說明： 【發明所屬之技術領域】 、本發明是有關於-㈣影設備之控制電路及控制方 法，且特別是有關於一種可以控制光源亮度之投影設備的 控制電路及方法。 【先前技術】 由於對投影機的體積、效率以及省電有更大的需求， 所以現今的投影器越做越精密。圖i緣示為習知之投料 備之内部結構=塊圖。f知之投影設備包括主處理器 1〇1沖、電源供應單元1G3、電源控制單元1G5、多個週邊處 罟二I?9和ul、光源控制單元113、以及光源裝 、。/、’電源供應單元⑽純於電源控制單元1〇5, 並供應工作電源Pl至電源控制單元1〇5。而電源控制單元 =則_於主處理器(ASIC)1G1與各個不_週邊處理 早兀07、109以及11卜電源控制單Tt 105接收工作電源200909976 PT896 24105twf.doc/n IX. Description of the invention: [Technical field of the invention] The present invention relates to a control circuit and a control method for a - (4) video device, and more particularly to a projection device capable of controlling the brightness of a light source Control circuit and method. [Prior Art] Due to the greater demand for projector size, efficiency, and power saving, today's projectors are becoming more sophisticated. Figure i shows the internal structure = block diagram of the conventional input. The projection device includes a main processor, a power supply unit 1G3, a power control unit 1G5, a plurality of peripherals, I?9 and ul, a light source control unit 113, and a light source. /, 'The power supply unit (10) is pure to the power supply control unit 1〇5, and supplies the working power source P1 to the power source control unit 1〇5. And the power control unit = then _ in the main processor (ASIC) 1G1 and each non-peripheral processing early 07, 109 and 11 power control single Tt 105 receiving working power
Pl，並將工作電源&轉換成各個週邊處理單元與主處理哭 (ASIC)lOl所需的電源。 主處理器(ASIC)lOl輕接光源控制單元113以及各個 ===單元，而光源控制單元ιι3的輸出端上輕 接光源衣置115。當主處理器(ASIC)1G1啟動後，會癸出—Pl, and convert the working power & into the power required by each peripheral processing unit and the main processing crying (ASIC) lOl. The main processor (ASIC) 101 is lightly connected to the light source control unit 113 and the respective === units, and the output of the light source control unit ιι is lightly connected to the light source housing 115. When the main processor (ASIC) 1G1 is started, it will pop up -
Vl給光源控制單元113，光源控制單元ii3 制訊號Vl發出光源控制電源&來實行 裝置115的啟動狀態。 當光源控制單元113啟動光源裝置115完成後，該些 200909976 FI 896 241 OMwf.d〇c/n 週邊處理單元l〇7、l()9和111會處於待命模纽等待輪入 訊號的輸入。週邊處理單元107、1〇9和U1處理完各自的 輸入訊號後，再傳送輸出訊號至主處理器(ASIC)1〇1以+ 成訊號處理的動作。 元 不過’習知的投影設備卻存在幾個迫切解決的問題· h因光源裝置115的導通電流為定電流，造成投影設 備的生產不易i所·生產不易是翻光縣置ιΐ5中 之發光二極體it件為個料同的獨立光源 體元件之導通電壓不-定相同，所❹_擇财相;^電 孤特性的發光二極體元件，亦即相同導通電壓的發光二極 體元件才可符合光源裝置之定電流要求。 2.投影設備啟動完成後是對所有的週邊處理單元全數 該週邊處理單元是否有在工作，於是造成電源 不必要的損耗。 $無法料本相處魏啊而對光源 ==當的調整，亦會造成電源不必要的消耗。 麥置有本發明提供—種控制電路，應用於一投影 _====大小’且依據偵測出的工 適當的調整。 邊處理單元，對工作電源做出 制電電路，應用於-投影裝置，控 制電路可依據繼。該投影設備控 衣兄儿度調整電壓訊號準位，且亦可用 200909976 PT896 241〇5twf.doc/n 貝刿發光. 一旭喊介電壓並你 臨界電壓來輕對應之•大小。 ， ^發明又提供一種投影設備的 不工作之週邊處理單元而 ^其可偵測出 消耗，提高投影設備的卫^率作絲的大小，減少功率 ^明提供一種控制電路，應用於 ==r:-電源管理模組、以 而電源管理模組::;此電源訊號 此外’電源管理模組更依據電源域的^x作電源。 源偵測訊號。電源管理模多'邊而產生-電 此，每—週邊處 更稱接夕個週邊處理單元。夢 作。除此μ 分別依據對應的χ作電^ 電源管理^，主處理器則可以輛接這些週邊處理單^ 理單元的控制訊號給;源管理：個=對J這些週邊處 就可:：定：-周邊處理單元=之=電】=:模組 影設備组本:明提供-種具有省電象投 源楔％1| β 、果且、源產生模組以及處理模组。電 源模;元，用來輸出-電源訊號。而電 以依電源域而產生多個功電源，並且可 依據電源訊號的強弱產生—带 接於電源模^減雷、^ m#u。處理模組竊 產生多數個控制訊號給電源模組，而控制所產生工作 200909976Vl is supplied to the light source control unit 113, and the light source control unit ii3 makes a light source control power source & to perform the activation state of the device 115. When the light source control unit 113 activates the light source device 115, the 200909976 FI 896 241 OMwf.d〇c/n peripheral processing units 10, 7, (9, and 111) are in the standby mode waiting for the input of the round signal. After the peripheral processing units 107, 1〇9 and U1 have processed the respective input signals, the output signals are sent to the main processor (ASIC) 1〇1 to perform the signal processing. However, there are several urgent problems in the conventional projection equipment. h Because the conduction current of the light source device 115 is a constant current, the production of the projection device is not easy. The production is not easy to be produced. The turn-on voltage of the element body of the same body is not the same, and the light-emitting diode component of the electric-isolated characteristic, that is, the light-emitting diode component of the same turn-on voltage Only meet the constant current requirements of the light source device. 2. After the projection device is started, all the peripheral processing units are all working, and the peripheral processing unit is working, thus causing unnecessary loss of power. $ can not be expected to get along with Wei and the adjustment of the light source == will also cause unnecessary consumption of power. The present invention provides a control circuit for applying a projection _==== size' and an appropriate adjustment based on the detected work. The edge processing unit makes a power generation circuit for the working power source, and is applied to the projection device, and the control circuit can be followed. The projection device controls the voltage level of the control device, and can also use the 200909976 PT896 241〇5twf.doc/n Becker light. A Xu shouting voltage and your threshold voltage to lightly correspond to the size. The invention also provides a non-working peripheral processing unit of the projection device, which can detect the consumption, improve the size of the projection device, and reduce the power to provide a control circuit for use in ==r :- Power management module, and power management module::; This power signal In addition, the 'power management module is based on the power domain's ^x for power. Source detection signal. The power management module is generated by multiple sides. This is a peripheral processing unit. Dreaming. In addition to this, respectively, according to the corresponding power supply ^ power management ^, the main processor can be connected to the control signals of these peripheral processing unit; source management: J can be around:: fixed: - Peripheral processing unit = = = electricity = =: module shadow device group: Ming provides - a kind of power saving image source wedge %1| β, fruit, source generation module and processing module. Power mode; element, used to output - power signal. The power generation generates a plurality of power sources according to the power domain, and can be generated according to the strength of the power signal—connected to the power module, the lightning reduction, and the ^m#u. Handling module stealing generates a large number of control signals to the power module, and the control produces work 200909976
FiWb 24lu^twf.d〇c/n 電源的大小。處理模組亦耦接光源 組更可產生脈寬調變訊號與電虔訊號給：：產=處理模 整光源產生模組所產生的光線亮度。“、吴組以调 ^本發Γ又提供—種投影設備之控制方法，包括產生工 作电源給投影設備中的數個週邊處 源的大小而產生電源偵測訊號邊;==工:電 =的工作電源大小回傳給主處理器，主處理二:依 电源設備的運作情形來娜卫作電源大小。 χ明所提供的控制電路與投影設備控制方法 要ίϊΠ组中的電源供應單元與電源控制單元之 測1f至處理模組，並以此電源偵測訊號的大小來 同時處理模組會依據電源偵測靡大 J:週^處理早兀的工作情形而調整工作電源。另外，光 ΐ细t杈組與處理模組之間多了脈寬調變訊號，並依據脈 的工作週期來達成投影設備減少功率損耗的效 果。 、 為讓本發明之上述和其他目的、特徵和優點能更明顯 下文特舉&佳實施例，並配合所附圖式，作細說 明如下。 【實施方式】 下的敛述將伴隨著實施例的圖示，來詳細對本發明 二出之貝轭例進行說明。有關本發明之前述及其他技術 内谷、特點與功效’在以下配合參考圖式之一較佳實施例 200909976 PT896 24105twf.d〇c/n 的詳細說明中，將可清楚的呈現。在各圖示 =參:標號’是用來敘述相同或相似的部= 揭ί的技術，僅以適當和清晰為目的，1二元 僅用來表^^^及模組與模11之間的Λ接關係，都 ^喊伴_圖示。本發明相關領域具有通常 田同°、些__不應絲限定本發明的精神。na 方塊=依照本發明之一實施例的—種投影設備之 勺括^Γ/考圖2 ’本實施例所提供之投影設備，至少 =了=電路2⑼。然而在此領域具有通常知識者可以 於^在⑼設備㈣可以包括其他的元件。例如在本實 二13 ϋ影設備還包括一影像產生單元211 * —鏡頭模 以控制影像產=電=，耗接影像產生單元211， 213。|^卜於#" 70產生衫像光束212給鏡頭模組 生^像晝束212藉由鏡頭模組213投射出來而產 理模tnf施例中’投影設備控制電路則至少包括處 '', 電源模組203、光源產生模組205。而在本實 控制電路200還包括使用者輸入單元207以及偵 209。處理模組2〇1耦接電源模組2〇3和光源產生 2〇5。另外，處理模組2〇1也接收使用者輸入單元207 和偵測單元209的輪出。 +請繼續參照圖2,電源模組2〇3可以提供處理模組201 所而的多個工作電源ρι’ ’以使處理模組201啟動。另外， 200909976FiWb 24lu^twf.d〇c/n The size of the power supply. The processing module is also coupled to the light source group to generate a pulse width modulation signal and an electrical signal to::Production=Processing the brightness of the light generated by the module. ", Wu group to control the hairpin and provide a kind of projection device control method, including generating working power to the size of several peripheral sources in the projection device to generate power detection signal side; == work: electricity = The working power is returned to the main processor, and the main processing is as follows: according to the operation situation of the power supply device, the power supply size of the power supply is provided by the power supply device. The control circuit and the projection device control method provided by the device must be the power supply unit and the power supply in the group. The control unit measures 1f to the processing module, and simultaneously processes the size of the power detection signal to adjust the working power according to the power detection, the processing power is adjusted according to the power processing. In addition, the optical power is adjusted. The pulse width modulation signal is added between the thin t杈 group and the processing module, and the effect of reducing the power loss of the projection device is achieved according to the duty cycle of the pulse. In order to make the above and other objects, features and advantages of the present invention more The following is a detailed description of the preferred embodiment and the accompanying drawings, which are described below in detail. [Embodiment] The following description will be accompanied by the illustration of the embodiment to detail the yoke of the present invention. The foregoing description of the present invention, as well as other features, features, and advantages of the present invention will be apparent from the following detailed description of a preferred embodiment of the accompanying drawings: FIG. In each figure = reference: the label 'is used to describe the same or similar part = the technique of the disclosure, only for the purpose of appropriateness and clarity, 1 binary is only used between the table ^^^ and the module and the module 11 The splicing relationship of the present invention is the same as that of the present invention. The related art of the present invention has a general field, and some __ should not limit the spirit of the present invention. na square = a projection device according to an embodiment of the present invention The projection device provided by the present embodiment, at least = circuit 2 (9). However, those having ordinary knowledge in the field can include other components in the device (4). For example, in the present invention. The second camera 13 further includes an image generating unit 211 * - a lens mode to control the image output = electricity =, and the image generating unit 211, 213 is consumed. | ^卜于#" 70 generates a shirt image beam 212 for the lens mode The grouping image is projected by the lens module 213 to produce the image. In the tnf embodiment, the 'projection device control circuit includes at least '', the power module 203, and the light source generating module 205. The real control circuit 200 further includes a user input unit 207 and a 209. The processing module 2 1 is coupled to the power module 2〇3 and the light source generates 2〇5. In addition, the processing module 2〇1 also receives the rotation of the user input unit 207 and the detecting unit 209. + Please continue to refer to Figure 2, the power module 2〇3 may provide a plurality of working power sources ρι′′ of the processing module 201 to enable the processing module 201 to be activated. In addition, 200909976
FlWb 24l0htwf.doc/n 電源模組203還可' LV _ v★ 對處理模組加料- V2猎此，處理模組2〇1 x出电源偵測訊號 組201本身的運作情形，而據偵測訊號Vz與處理模 =«分別對軸電源模二，二 模 圖3繪示為依照本發明 奋 203結構的方塊圖。 只轭例的一種電源模組 源供應單元電源触加可以包括電 可以是交流轉』;源供應單元3〇1 管理模組303，用來輪出二，拉組’其輕接至電源 303。 電源汛5虎Ρι給電源管理模組 電源管理模組3〇3 φ目,丨七& + 源控制單元3〇7。其中中貞測單元305以及電 结一、 八r 电/原偵測皁元305耦接带、、s似成 制=的輸出、，以接收電源訊號P!。另一方面，電： 並且:出源偵測單元305而接收電源訊號Ρι， 個工作電源Ρι，給處理模組2qi。當單 兀301將電源訊號Pl輸出給電源管 =早 測單元305可以先伯、、則m缺D挨 4，電源偵 號％。 先偵測電源錢Pl的大小，並產生偵測訊 圖情示為依照本發明之—實施例的—種電 凡〇5的電路圖。請參照圖4，電源偵測單元305利用帝 $4〇1來實;見。在本實施例中，電阻4G1的兩端分= 笔源偵測單元305的輸入端(Γ和1〇和輸出端(〇+和 j 電源訊號Pi經過電阻401時，會在兩端造成一電壓差，^ 200909976 PT896 24105twf.d〇c/n ，電壓差就#作制訊號V2。®此，藉由侧訊號v2， 就可以得知電源訊號Pi的大小。 圖5 %示為依照本發明之一實施例的一種處理模組 2〇1的方塊圖。請參照圖5,處理模組201可以包括一主處 理益501與數個週邊處理單元503、505以及507。主處理 =501輕接至週邊處理單元503、505以及5〇7，並且輕接 電源模組203以接收電源偵測訊號乂2。在本實施例中，週 邊處理單元503、505以及507可以包括類比數位轉換器、 視訊處理器和音訊處理器。顧名思義，類比數位轉換器是 用來轉換類比訊號成為數位訊號，而視訊解碼器和音訊解 碼益可以分別解碼一視訊資料和一音訊資料。另外，週邊 處理單元和5〇3、505以及507也耦接電源模組203，以接 收工作電源Ρι，而運作。 圖6續'示為依照本發明之一實施例的一種投影設備控 制方法之步驟流程圖。請合併參照圖3、圖5和圖6，當電 源偵測單元303輸出偵測訊號V2給處理模組201時，主處 ，器501可以判斷偵測訊號％是否大於一預設值(s6〇l)。 ^偵測訊號V2不大於此預設值時(就是步驟S6〇丨所標示的 否）’則主處理器501可以輸出控制訊號Si給電源控 制單元307，使其維持正常的工作電源Pl，大小(S6〇3)，並 且重覆S601等步驟。 相對地，當偵測訊號V2大於預設值時(就是步驟S601 所標不的“是”），代表電源供應單元301所輸出的電源訊 旒Pi可能太大。此時，主處理器501就會偵測是否有週邊 11 200909976 PT896 241〇5twf.doc/n 處理單元不運作(S605)。由於週邊處理單元5〇3、5〇5和％ 並非隨時都處於運作狀態，因此當主處理器5〇1價側 邊處理單元503“、505 # 5〇7有任—不運作時(就是步驟 S605所標不的是），則輸出相對應的控制訊號s】_ 源控制單元307，使其調整相對應之工作電源^，的大^ 在有些實施例中，電源控制單元307甚至可以停止供 不運作的週邊處理單元。藉此，就可以降低電源的消耗: 在^卜-些實施财，#主處理器偵 ^凡03、505和507都在運作時(就是步驟祕所^ 的否’），則重複S603等步驟。 坏铩不 請再參照圖2，處理模組2〇1除了可以控 2〇3的供電之外，也可以依據使用者 =、、且 單元209的於屮，τ·ίτ、 * 早7^ 207和偵測 ;])，而輪峨訊號％與脈寬調變 的:氣給控制光源產生模組咖，以控制其產生“ 組之明:的一種光源產生模 制單元7CM和光源裝置期。其、中，，括光源控 超向壓投影汞燈或數個發光二 '、、 3可以是 光源。而光源控制單元^叙接s 以生投影所需的 電壓訊號V】與脈寬調變％味f光源裝置703，以依據 P2給光源裝m ϋ = Z而產生光源控制電振 明暗。在本發明的—==裝置703所產生之光源的 J二極體來實現時，則光二制單 光二極體_界麵，_整對叙光源 12 200909976 P1896 24i〇5twf.doc/n 括-雪imm K先一極體。光源控制單元7G1可以包 及—開關電晶體805。立中，電 端接收電壓訊號V,，另一*山'、 €阻801之一 發光二極請的陽二=:接至纖置703中之- 端接收脈寬㈣^ 外，開關電晶體7G5之閘極 %接叹胍見调，邊訊5虎pwM， 祕至發光二極體703的陰極端源糾接地，其祕端則 單元5和圖8，當—使用者操作使用者輸入 處理态501可以依據輸入訊號h，而產生 VI給光源控制單元7G1。當電壓訊號V1通過電 阻801日守，可以轉換成驅動電流Id以驅動發光 由Γ壓訊號％的大小與驅動電流^的大小成正比，而 驅動笔流id的;M、又與發光二極體_的亮度成正比。因 此’使用者只要藉由操作使用者輸人單元挪，就可以控 制圖7之光源裝置7〇3的亮度。 时另外，圖2之偵測單元2〇9可以是一光偵測器。當偵 測單兀209偵測到m境的亮度時，會輸出一亮度訊號μ 給主處理ϋ 5G卜當主處理器5G1接收到亮度訊號一，就 I以產生脈寬調變訊號PWM給光源控制單元7〇1。當脈 見调k訊號PWM在工作週期時’開關電晶體8〇5就可以 導通，而使發光二極體803被驅動。相對地，當脈寬調變 siU虎PWM不在工作週期時，開關電晶體8〇5就可能截止， 而使發光一極體803被禁能。 13 200909976 ri6y〇 z^fiu^Lwf.doc/n 在本實施例中，亮度訊號L】的大小與脈寬調變訊號 PWM的工作週期長短可以成反比。也就是說，當環境亮u 度愈亮’貝，!亮度訊號Ll神位就愈高，導致脈寬二變二^ PWM的工作週期變短，因此光源装置7〇3所產生之光^ 的亮度就會降低，以節省電源的消耗。 本發明所提供的投影設備之控制電路與方法可依據 工作電源大小與投影設備的運作情形，對工 整。因此，可避免不必要的電源消耗。而且， 應周圍環境亮度的大小產生脈寬機訊號pWM，並藉由 所產生之脈寬調變訊號PWM的工作週期調整投影設^所 產^之光源的亮度。承上述’此投影設備便可達到最佳的 4電S文果 淮以上所述者，僅為本發明之較佳實施例而已，當不 ，以此限定本發明實施之範圍，即大凡依本發明申請專利 ^圍及發明說_容所作之簡單的等效變化與修飾，皆仍 ^發明專利涵蓋之範圍内。另外本發明的任—實施例或 ^凊專利職不須達成本發騎揭露之全部目的或優點或 寸“’占此外，摘要部分和標題僅是用來輔助專利文件搜尋 之用，並非用來限制本發明之權利範圍。 【圖式簡單說明】 圖1繪示為習知之投影設備之内部結構方塊圖。 圖2繪示為依照本發明之一實施例的一種投影設備之 圖3繪示 構的方塊圖。 為依照本發明之一實施例的一種電源模組結 14 200909976 FlWb 241U^twf.doc/n 圖4繪示為依照本發明之一實施例的一種電源偵測單 元的電路圖。 圖5繪示為依照本發明之一實施例的一種處理模組的 方塊圖。 圖6繪示為依照本發明之一實施例的一種投影設備控 制方法之步驟流程圖。 圖7繪示為依照本發明一實施例的光溽產生模組結構 之方塊圖。 圖8繪示為依照本發明一實施例的光源控制單元之電 路圖。 【主要元件符號說明】 101、501 :主處理器 103、301 :電源供應單元 105、307 :電源控制單元 107、109、111、503、505、507 :週邊處理單元 113、601 :光源控制單元 115、603 :光源裝置 P!:電源訊號 V!:電壓訊號 P2 :光源控制電源 200 :投影設備控制電路 201 :處理模組 203 :電源模組 205:光源產生模組 207 :使用者輸入單元 15 200909976 r l &y〇 zh i υ j iwf.doc/n 209 :偵測單元 211 :影像產生單元 212 :影像光束 213 :鏡頭模組 214 :影像晝面 I!:輸入訊號 :亮度訊號 V2 :電源偵測訊號 Si :控制訊號 P/ :工作電源 PWM:脈寬調變訊號 303 :電源管理模組 305 :電源偵測單元 401 :電阻 0+、〇_ :輸出端 Γ、r :輸入端 S601、S603、S605、S607 :本發明一實施例之投影設 備控制方法流程圖之各步驟 701 :光源控制單元 703 :光源裝置 705 :開關電晶體 801 :電阻 803 :發光二極體 805 :開關電晶體FlWb 24l0htwf.doc/n Power module 203 can also 'LV _ v★ add processing module - V2 hunting this, processing module 2〇1 x output power detection signal group 201 itself, and detected The signal Vz and the processing mode = « respectively for the shaft power supply mode 2, and the second mode 3 is a block diagram of the structure of the 203 according to the present invention. A power supply module of the yoke only source power supply unit may include power supply, which may be an AC transfer; and a source supply unit 3〇1 management module 303, which is used to rotate two, and the pull group ' is lightly connected to the power supply 303. Power supply Ρ 5 Ρ ι to power management module Power management module 3 〇 3 φ mesh, 丨 seven & + source control unit 3 〇 7. The middle detecting unit 305 and the electric junction one, the eight r electric/original detecting soap element 305 are coupled to the belt, and the output of the s is formed to receive the power signal P!. On the other hand, the electricity: and: the source detecting unit 305 receives the power signal Ρι, and the working power source ,ι, to the processing module 2qi. When the single port 301 outputs the power signal P1 to the power supply tube, the early detection unit 305 can be first, then m is missing D挨 4, and the power source is detected by %. First, the size of the power supply P1 is detected, and a detection signal is generated as a circuit diagram of the electronic device 5 according to the embodiment of the present invention. Referring to FIG. 4, the power detecting unit 305 utilizes the emperor $4〇1; see. In this embodiment, the two ends of the resistor 4G1 are the input terminals of the pen source detecting unit 305 (Γ and 1〇 and the output terminals (〇+ and j power signals Pi pass through the resistor 401, causing a voltage at both ends) Poor, ^ 200909976 PT896 24105twf.d〇c / n, the voltage difference is # making signal V2. This, by the side signal v2, you can know the size of the power signal Pi. Figure 5 is shown in accordance with the present invention A block diagram of a processing module 2〇1 of an embodiment. Referring to FIG. 5, the processing module 201 may include a main processing benefit 501 and a plurality of peripheral processing units 503, 505, and 507. The main processing = 501 is connected to The peripheral processing units 503, 505, and 5 are connected to the power module 203 to receive the power detection signal 乂 2. In this embodiment, the peripheral processing units 503, 505, and 507 can include analog digital converters and video processing. And audio processor. As the name implies, the analog digital converter is used to convert the analog signal into a digital signal, and the video decoder and audio decoding can decode a video data and an audio data separately. In addition, the peripheral processing unit and 5〇3 , 505 and 507 are also coupled The power module 203 is operated to receive the working power supply. Figure 6 is a flow chart showing the steps of a projection device control method according to an embodiment of the present invention. Referring to Figure 3, Figure 5 and Figure 6, When the power detecting unit 303 outputs the detecting signal V2 to the processing module 201, the main unit 501 can determine whether the detecting signal % is greater than a preset value (s6〇l). ^ The detecting signal V2 is not greater than this pre- When the value is set (that is, the flag is not indicated in step S6), the main processor 501 can output the control signal Si to the power control unit 307 to maintain the normal working power P1, the size (S6〇3), and repeat. Step S601, etc. In contrast, when the detection signal V2 is greater than the preset value (that is, YES in step S601), the power signal Pi outputted by the power supply unit 301 may be too large. The processor 501 detects whether there is a peripheral 11 200909976 PT896 241〇5twf.doc/n processing unit does not operate (S605). Since the peripheral processing units 5〇3, 5〇5, and % are not always in operation, Main processor 5〇1 valence side processing unit 503", 505 # 5〇7有任—When not operating (that is, the step S605 is marked), the corresponding control signal s]_ source control unit 307 is output to adjust the corresponding working power supply ^, the large ^ In some embodiments, the power control unit 307 can even stop the peripheral processing unit for non-operation. Thereby, the power consumption can be reduced: In the implementation, the main processor detects the 03, 505 and When the 507 is in operation (that is, the step secret ^), repeat steps S603 and so on. If you don't want to refer to Figure 2 again, the processing module 2〇1 can also control the power supply of 2〇3, but also according to the user=, and the unit 209, τ·ίτ, * 7 7 207 And detecting;]), and the rim signal and the pulse width modulation: the gas to the control light source generates a module coffee to control the generation of the "group of light source" to produce the molding unit 7CM and the light source device period. The light source controlled super-pressure projection mercury lamp or the plurality of light-emitting two', 3 may be a light source, and the light source control unit is connected to the voltage signal V and the pulse width modulation required for the projection. The F-light source device 703 generates a light source to control the electric vibration to light and dark according to the light source ϋ = Z according to P2. When the J diode of the light source generated by the device 703 of the present invention is realized, the light system is Single light diode _ interface, _ whole pair of light source 12 200909976 P1896 24i 〇 5twf.doc / n including - snow imm K first pole. Light source control unit 7G1 can include - switch transistor 805. Lizhong, electric end Receiving the voltage signal V, another one of the mountains, one of the resistances of the 801, and the second of the two poles: the second is connected to the fiber 703 - the terminal receives Width (4) ^ Outside, the gate of the switching transistor 7G5% sighs and sees the tone, the edge of the 5 tiger pwM, the secret to the cathode end source of the LED 703 is grounded, the secret end of the unit 5 and Figure 8, when - The user operates the user input processing state 501 to generate a VI to the light source control unit 7G1 according to the input signal h. When the voltage signal V1 passes through the resistor 801, it can be converted into the driving current Id to drive the illumination by the pressing signal %. The size is proportional to the magnitude of the driving current ^, and drives the flow id; M, which is proportional to the brightness of the LED. Therefore, the user can control the graph by operating the user input unit. 7 The brightness of the light source device 7〇3. In addition, the detecting unit 2〇9 of Fig. 2 may be a light detector. When the detecting unit 209 detects the brightness of the m environment, a brightness signal is output. μ is given to the main processing ϋ 5G. When the main processor 5G1 receives the luminance signal one, I generates the pulse width modulation signal PWM to the light source control unit 7〇1. When the pulse sees the k signal PWM during the duty cycle, the switch is turned on. The crystal 8〇5 can be turned on, and the light-emitting diode 803 is driven. To the ground, when the pulse width modulation siU tiger PWM is not in the duty cycle, the switching transistor 8〇5 may be cut off, and the light emitting body 803 is disabled. 13 200909976 ri6y〇z^fiu^Lwf.doc/n In this embodiment, the magnitude of the luminance signal L] can be inversely proportional to the length of the duty cycle of the pulse width modulation signal PWM. That is, when the ambient brightness is brighter, the brightness of the luminance signal L1 is higher. The pulse width is changed to two. The duty cycle of the PWM is shortened, so that the brightness of the light generated by the light source device 7〇3 is lowered to save power consumption. The control circuit and method of the projection device provided by the invention can be tailored according to the working power source size and the operation condition of the projection device. Therefore, unnecessary power consumption can be avoided. Moreover, the pulse width machine signal pWM is generated according to the brightness of the surrounding environment, and the brightness of the light source of the projection device is adjusted by the duty cycle of the generated pulse width modulation signal PWM. The above-mentioned 'this projection device can achieve the best 4 electric S. The above is only the preferred embodiment of the present invention, and if not, the scope of the implementation of the present invention is limited. The simple equivalent changes and modifications made by the invention patents and the inventions are still within the scope of the invention patents. In addition, any of the embodiments or the patents of the present invention are not required to achieve all the purposes or advantages or advantages of the present disclosure. The summary and the title are only used to assist in the search of patent documents, and are not used for 1 is a block diagram of the internal structure of a conventional projection device. FIG. 2 is a diagram showing the structure of a projection device according to an embodiment of the present invention. A power module junction 14 in accordance with an embodiment of the present invention. 200909976 FlWb 241U^twf.doc/n FIG. 4 is a circuit diagram of a power detecting unit according to an embodiment of the present invention. 5 is a block diagram of a processing module in accordance with an embodiment of the present invention. Figure 6 is a flow chart showing the steps of a method for controlling a projection device in accordance with an embodiment of the present invention. FIG. 8 is a circuit diagram of a light source control unit according to an embodiment of the invention. [Main component symbol description] 101, 501: main processor 1 03, 301: power supply unit 105, 307: power control unit 107, 109, 111, 503, 505, 507: peripheral processing unit 113, 601: light source control unit 115, 603: light source device P!: power signal V!: Voltage signal P2: light source control power supply 200: projection device control circuit 201: processing module 203: power supply module 205: light source generation module 207: user input unit 15 200909976 rl &y〇zh i υ j iwf.doc/ n 209 : detection unit 211 : image generation unit 212 : image beam 213 : lens module 214 : image plane I! : input signal: brightness signal V2 : power detection signal Si : control signal P / : operating power supply PWM: Pulse width modulation signal 303: power management module 305: power detection unit 401: resistance 0+, 〇_: output terminal Γ, r: input terminal S601, S603, S605, S607: projection device according to an embodiment of the present invention Step 701 of the control method flowchart: light source control unit 703: light source device 705: switching transistor 801: resistor 803: light emitting diode 805: switching transistor
Id :驅動電流 16Id : drive current 16