201115322 六、發明說明： 【發明所屬之技術領域】 ，發明是«於能顯示裝置，且特別是—觀測使用 者存在與否自_整顯示畫面亮度以降低功耗_示裝置。 【先前技術】 現有的藉由_使財存在與否自動調整顯示晝面亮度以降 低功耗_示裝置，其在_使用者存在與否的手段上大致可分 ，四種。第-種手段是藉由_輸人裝置閒置與否來判斷使用者 存在與否。例如’目前電腦的作業系統通常具有省電功能，當省 ^力能開啟時，倘若電駐作在正倾式下，在使用者停止輸入 貝料超過:段預定時職’電腦就會使顯示裝置進人省電模式， 並關閉顯示晝面。然後使用者必須觸動·或鍵盤等輸入裝置， 電腦才會賴轉置回贴常模式，並開賴示晝面。如果使用 者^未離開X作位置而只是在職時肋沒有做任何輸入動作， 電腦會因為無法判別而仍然使顯示裝置進人省電模式，造成使用 者的工作被+斷。有的者乾脆將省電功制掉⑽免工作被 中斷，如此一來當然會使電腦有不必要的電力浪費。 第二種手段是藉由熱偵測器偵測使用者存在與否。例如，美 國公告第6650322號專利揭示在電腦顯示裝置及/或鍵盤上設置紅 外線貞測器’藉由熱偵測器接收周圍的溫度資料，通過滤波器 ，除溫度資射的直流成分’以便分析是否存在人射吸產生的 溫度擾動。當偵測到的溫度擾動超出預設值時，表示在電腦前有 使用者存在，電腦開啟顯示畫面；反之，當偵測到的溫度擾動低 於預σ又值時’表示在電腦前沒有使用者存在，電腦關閉顯示晝面。 然而’熱_器周®的溫度容易受到天氣、冷軟氣機、風扇等因 201115322 素影響而產生溫度擾動，而且人類呼吸頻料餘同，呼吸更可 受到人_念的短暫控制，這些均會對分析是轉在人類呼吸產 生的溫度擾動造成干擾’使分析結果的準確度和靈敏度不高。201115322 VI. Description of the invention: [Technical field to which the invention pertains] The invention is a device capable of displaying a device, and in particular, observing the presence or absence of a display screen brightness to reduce power consumption. [Prior Art] The existing device automatically adjusts the brightness of the display surface by means of the presence or absence of money to reduce the power consumption. The device is roughly separable in terms of the presence or absence of the user, four types. The first means is to judge whether the user is present or not by whether the _ input device is idle or not. For example, 'the current computer operating system usually has a power-saving function. When the power can be turned on, if the electric station is in the positive tilt mode, the user will stop the display when the user stops inputting the billet more than: The device enters the power save mode and turns off the display. Then the user must touch the input device such as the keyboard or the keyboard, and the computer will turn back to the normal mode and open the display. If the user ^ does not leave the X position and only does not perform any input action during the job rib, the computer will still cause the display device to enter the power saving mode because it cannot be discriminated, causing the user's work to be + off. Some people simply cut off the power-saving work (10) and the work was interrupted, which of course would cause unnecessary power waste in the computer. The second method is to detect the presence or absence of the user by using a thermal detector. For example, U.S. Patent No. 6,650,322 discloses the provision of an infrared detector on a computer display device and/or a keyboard to receive ambient temperature data by a thermal detector, through a filter, in addition to a DC component of temperature radiation for analysis. Is there a temperature disturbance caused by human injection? When the detected temperature disturbance exceeds the preset value, it means that there is a user in front of the computer, and the computer turns on the display screen; otherwise, when the detected temperature disturbance is lower than the pre-σ value, it means that it is not used in front of the computer. The presence of the computer turns off the display. However, the temperature of 'Hot_Wei Zhou® is susceptible to temperature disturbances caused by weather, cold air compressors, fans, etc. due to the influence of 201115322, and the human respiratory rate is the same, and the breathing can be temporarily controlled by people. It will cause interference in the analysis of temperature disturbances caused by human breathing, making the accuracy and sensitivity of the analysis results low.
第f種手段是藉由反射式近接_1|_制者存在與否。 例如美國Α σ第6418536號專利揭示在可攜式電腦顯示裝置上 設置反射式近賤測H ’其巾制器包含魏器和接㈣。由發 射器發射超雜或紅外線，崎聲波餘外線碰騎體會被反 射。當接收紐㈣反射的超聲波或紅外線，表示在電腦前有使 用者存在，電腦開啟顯示晝面；反之，t接㈣未接收到反射的 超聲波或㈣線，表示在電麵沒有制者存在，制關閉顯示 晝面。不過’若有兩台以上這種類型的顯示裝置放置得很靠近時， 某台顯不裝置_祕射的超聲波或紅外線碰到在其前面的使用 者而產生反_超聲波或紅外線，反射的超聲波或紅外線除了會 被該台顯示《置_器所_到之外，還可能被別台顯示裝置债 測器所個到’別台顯示震置將發生沒有使用者在其前面卻因為 偵測到反射的超聲波或紅外線而發生開啟顯示晝面的誤判情形。 第四種手段是藉由在顯示|置及制者身上分概置信號接 收器及發射器以_制者存在與否。例如，台灣公告第搬抑 號專利揭示由佩帶在使用者身上的域發靠發射騎識別碼的 光線(稱為使用者位置錢），紐由設置在顯示裝置上的信號摘 測器侧是否收到使用者位置信號且使用者位置信號中的識別碼 和顯示裝置内建的識觸相同。當顯示裝置收到制者位置信號 且使用者位置信號巾的朗碼和顯示裝置喊的_碼相同時， 表不在顯4置前有合格的使財存在，齡裝㈣啟顯示晝 面’反之’當顯示裝置未收到使用者位置信號、或者收到使用者 位置信號但伽者位置信號巾的朗碼和顯示裝置喊的識別碼 201115322 不相同時’表示在顯示裝置前沒有使用者存在、或者有使用者存 在但使用者是不合格的使用者，此時顯稀置關_示晝面。這 樣雖然不會發生前述第三種手段的誤判情形，但是使用者一旦忘 了佩帶⑽㈣n或錢發㈣科心掉落，就會無法使用顯= 裝置’相當不方便。 【發明内容】 有鑑於此，本發_目的就是在提供— 者存在與否自_整顯示畫面亮度崎低功耗，既 生如先前技術所述的誤珊形，林t要使用者佩帶任何東西。 获」了丨達成上述目的與其他目的’本發明提出"*麵示裝置， 者存在絲自_轴衫面亮度崎低功耗。顯 制^用制益、紅外線發射器以及紅外線接收器，其中，控 射帶有編收編碼信號，並發 =線二=在設定時間内未接收到帶有編碼 當控制讯二颂不旦面壳度（包含關閉顯示晝面）；反之， 號時，^㈣亍Γ二，接收到帶有編碼信號的第二紅外線信 閉時，整為使用者設定亮度。在顯示畫面關 時，繼續關閉顯示晝面；^之到馬信號的第二紅外線信號 號的第二紅外線信號時，附^控^判斷接收到帶有編碼信 者介面輪入調整嗖定時門的A人‘，、員不里面。而使用者可藉由使用 整設定時間。β H P々到控制器，使控制器根據命令調 在一實施例t，控繼更輪幻貞測距離控制信號，_距離 201115322 制線發射器發射帶有編碼信號的第一紅外線 為紅料細發【二紅外線信號的接收距離 制?，者介面輸入調整她離的命令到控 便控制讀據中令輸出相應的偵測距離控制信號。 在一實施例中’控制器更輸出 =:胸用以控制紅外線發射器每隔發射t j碼㈣的苐-紅外線信號。而使用者可藉由使用者介面輸 測令到控制器，使控制器根據命令輸出相^貞 的眘H施Γ1中’顯示裂置為陰極射線管顯示器。在另一替代 、實备例中，加裝置為平面顯示器，例如為液晶顯示器。 反射裝置因在其上設置紅外線發射器及接收器組成的 ίηΐΓ ’由紅外線發射器發射帶有編碼信號的紅外線 士 開啟時，當紅外線接收器在設定時間内接收到 號的紅外線信號時’表示在顯示裝置前在設定時 當紅外線接收器在設定時_未接收到帶有 n扁碼信號的紅外線信號時，表示麵示裝置前在設定時間= ^有使用者存在，然後根__使用者存在與否自動調整顯示 =面免度以降低功耗。本發_示裝置料會發生如先前技 述的誤判情形，亦不需要使用者佩帶任何東西。 為讓本發明之上述和其他目的、特徵和優點能更明顯易懂， 下文特舉較佳實施例，並配合所關式，作詳細說明如下。 【實施方式】 圖1A及® 1B為本發_示裝置藉由細使用者存在與否自 201115322 動調整顯示晝面亮度崎低功耗之示意圖。為了方便說明起見， 將顯示晝面亮度從最暗到最亮定義為0到100之值，其中當亮度 為0,表不關閉顯示晝面。另外，顯示裝置通常還會提供使用者 依照喜好設定顯示晝面亮度（以下稱為使用者設定亮度），其 是亮度為80。 、請先參照圖1A，本發明在顯示裝置丨上設置紅外線發射器12 以及=外線接收器13,由紅外線發射器12發射帶有編碼信號的紅 外線^:虎’在此以虛線形式的射線L1〜u表現帶有編碼信號的紅 外線信號及其行進方向。甴於在顯示裝置丨前沒有使用者存在， 使得帶有編碼信號的紅外線信號L1〜L4不會因此被反射而為紅外 線接收器13所接收到。此時，顯示裝置！沒接收到任何帶有編碼 信號的紅外驗號’ 觸沒有侧者存在，並自動降低顯示 晝面11亮度(例如使其亮度為20)或甚至於關閉顯示晝面 亮度為0)。 一 ' η在本發明中’每台顯示裝置發射的紅外線信號帶有的編碼信 號通=設計錢-無二的，換句話說，獨的顯示裝置發射的^ 外線信號帶有的編碼信號必定是不_。如此—來，即使有別二 顯示裝置發射的帶有編碼賴的紅外線錢L5 #本台顯示裝置1 的紅外線接收器13所接㈣，但是因為紅外線信號L5帶有的編 碼信號必然不同於紅外線錢L1〜L4帶有的編碼信號，本台 裝置1並不會因為接收到紅外線信號L5就誤判在本台顯示 前有使用者存在。 請再參照圖1B，由於在顯示裝置i前有使用者存在， 有編碼信號的紅外線信號L1〜L4射的[2及乙3因碰到使 被反射(分別變為L2’及L3’）。此時，顯示裝置w紅外線 器13會接收到反射的帶有編碼信號驗外線信號，在本實施例為 201115322 L3’，因此判斷有使用者存在，並自動調高顯示書面n 冗度或開啟顯τττ晝面11而使顯示晝面u亮度為 (例如使其亮度為⑻。 《財叹疋冗度 本發明顯示裝置1例如是傳統的陰極射線管 簡稱⑽顯示器，或是液晶顯示器、有機發光二極體^ 益（Orgamc Light-Emitting Diode ’ _0LED)等的平面顯示器。 圖2為本發明顯示裝置之第一實施例之電路方塊圖 施例中顯7F裝置以液晶顯示器為例。請參照圖2，顯 22' 23' 24月光源25以及液晶面板26。控制器21儲存有編 將編碼信號輸出到紅外線發射H 22，酶台顯置儲=編碼 =常設計成獨一無二的。另外，控制器21還輸出== 制％光源驅動電路24，藉由背統驅動電路24調 ^^控 當背光源25關閉時，液晶面板26呈現出如圖1Α所示的 =示2= 11 ’當背光源25開啟時，液晶面板26由背光源25提ft光複 現出如圖1B所示_示晝面U。 祕先線而呈 紅外線發射器22接收編碼信號，並魏帶有編邮 紅外線信號’這裡的帶有編碼信號的第一紅外線信:円aThe f-th means is by the presence or absence of a reflective proximity _1|_. For example, U.S. Patent No. 6,418,536 discloses the provision of a reflective near-detection H' on a portable computer display device. The towel holder includes a transmitter and a connector (4). Excessive or infrared rays are emitted by the transmitter, and the outer surface of the Sonic Acoustic Wave will be reflected. When receiving the ultrasonic or infrared light reflected by the neon (four), it means that there is a user in front of the computer, and the computer turns on the display surface; otherwise, t (4) does not receive the reflected ultrasonic wave or (four) line, indicating that there is no manufacturer on the electric surface. Close the display. However, if more than two types of display devices of this type are placed very close together, a certain display device _ secret ultrasound or infrared light hits the user in front of it and produces anti-ultrasonic or infrared rays, reflected ultrasonic waves. Or the infrared light will be displayed by the station, in addition to the device, it may be displayed by another display device. The display of the other device will occur. No user is in front of it but it is detected. The reflected ultrasonic wave or infrared ray causes a false positive condition to open the display surface. The fourth means is to present the signal receiver and transmitter by means of the display device and the transmitter. For example, the Taiwan Announcement No. Patent No. Patent discloses that the light that is worn by the user wearing the riding identification code (called the user's position money) is placed on the signal extractor side of the display device. The user's position signal and the identification code in the user's position signal are the same as those built into the display device. When the display device receives the maker position signal and the lang code of the user position signal towel is the same as the _ code of the display device, the watch is not in the presence of the qualified money, and the age device (four) starts to display the face] 'When the display device does not receive the user position signal, or receives the user position signal but the singularity of the singular position signal towel and the identification code 201115322 of the display device are not the same, ' indicates that no user exists before the display device, Or there is a user who exists but the user is unqualified, and at this time, it is smeared. Although the above-mentioned third means of misjudgment does not occur, once the user forgets to wear (10) (four) n or money (4) the heart drop, it is quite inconvenient to use the display device. SUMMARY OF THE INVENTION In view of this, the present invention is to provide the presence or absence of self-contained display screen brightness and low power consumption, both as described in the prior art, Lin t wants the user to wear any thing. It has been achieved that the above-mentioned objects and other purposes have been achieved. The present invention proposes a "* face display device, which has a low power consumption of the wire surface. Display control, infrared transmitter and infrared receiver, wherein the control has a coded signal, concurrent = line 2 = not received with the code within the set time when the control message is not good Degree (including closing the display face); otherwise, when the number is ^, (4) 亍Γ two, when receiving the second infrared signal with the coded signal, the user sets the brightness. When the display screen is off, the display of the second infrared signal of the second infrared signal number of the horse signal is continued. When the second infrared signal of the second infrared signal number of the horse signal is turned on, the control unit receives the A with the coded operator interface wheel adjustment. People', members are not inside. The user can set the time by using the entire time. β HP 々 to the controller, so that the controller adjusts according to the command in an embodiment t, and controls the wheel illusion distance control signal, _ distance 201115322 line transmitter emits the first infrared ray with coded signal as red material Send [two infrared signal receiving distance system?, the interface input adjusts her departure command to the control and controls the reading data to output the corresponding detection distance control signal. In one embodiment, the controller outputs = the chest is used to control the infrared-transmitter's 苐-infrared signal every second of the t j code (four). The user can output the measurement command to the controller through the user interface, so that the controller outputs the phase of the signal to the cathode ray tube display according to the command output. In another alternative, practical example, the adding device is a flat panel display, such as a liquid crystal display. The reflecting device is composed of an infrared emitter and a receiver. The 'infrared emitter transmits an infrared signal with a coded signal when the infrared receiver transmits the infrared signal with the coded signal. Before the display device is set, when the infrared receiver is set, the infrared signal with n flat code signal is not received, indicating that the user is present at the set time before the device is displayed, and then the user exists. Whether to automatically adjust the display = face freeness to reduce power consumption. The present invention may cause a misjudgment as in the prior art, and the user is not required to wear anything. The above and other objects, features, and advantages of the present invention will become more apparent and understood. [Embodiment] Figs. 1A and 1B show a schematic diagram of the power consumption of the display device by the presence or absence of a thin user from 201115322. For convenience of explanation, the brightness of the facet is defined from the darkest to the brightest as 0 to 100. When the brightness is 0, the display does not close the display. In addition, the display device usually also provides the user with the display brightness according to the preference (hereinafter referred to as user-set brightness), which is a brightness of 80. Referring first to FIG. 1A, the present invention provides an infrared emitter 12 and an external line receiver 13 on a display device, and an infrared emitter 12 transmits an infrared light with an encoded signal: a tiger's ray L1 in the form of a broken line. ~u represents an infrared signal with an encoded signal and its direction of travel. There is no user present before the display device, so that the infrared signals L1 to L4 with the encoded signals are not reflected and received by the infrared receiver 13. At this point, the display device! Did not receive any infrared test mark with coded signal, no side is present, and automatically reduces the brightness of the display face 11 (for example, its brightness is 20) or even closes the display brightness to 0). In the present invention, the 'infrared signal transmitted by each display device carries the coded signal pass=design money-in other words. In other words, the coded signal transmitted by the external display device of the unique display device must be Do not_. In this way, even if the infrared receiver 13 with the coded infrared light L5 # local display device 1 is connected (four), the encoded signal carried by the infrared signal L5 is inevitably different from the infrared money. The coded signals carried by L1 to L4, the device 1 does not misjudge the presence of the user before the display of the station due to the reception of the infrared signal L5. Referring to Fig. 1B again, since there is a user in front of the display device i, the infrared signals L1 to L4 having the coded signals are transmitted [2 and B3 are reflected (reduced to be L2' and L3', respectively). At this time, the display device w infrared device 13 receives the reflected signal with the encoded signal, which is 201115322 L3' in this embodiment, so it is judged that the user exists, and the display is automatically turned up or the display is turned on. Τττ昼11, so that the brightness of the display surface u is (for example, the brightness thereof is (8). The display device 1 of the present invention is, for example, a conventional cathode ray tube abbreviation (10) display, or a liquid crystal display, an organic light emitting device. A flat panel display such as an Orgamc Light-Emitting Diode '_0LED. , 22' 23' 24 month light source 25 and liquid crystal panel 26. The controller 21 stores the coded output signal to the infrared emission H 22, and the enzyme stage display = code = often designed to be unique. In addition, the controller 21 Also output == % light source driving circuit 24, by the backlight driving circuit 24, when the backlight 25 is turned off, the liquid crystal panel 26 appears as shown in FIG. 1 = 2 = 11 ' when the backlight 25 When turned on, The crystal panel 26 is reproduced by the backlight 25 and is reproduced as shown in FIG. 1B. The infrared emitter 22 receives the encoded signal and the encoded infrared signal is transmitted here. The first infrared signal of the encoded signal: 円a
1A 紅外線仏虎，並將第二紅外線信號轉換成相應的 二 到控制器21，這裡的第二紅外線魏就如同是圖H运 的紅外驗號L3’心。由於每台顯轉置鋪的紅外線 有的編碼㈣通常設計成獨-無二的，當第二紅外_ = 的編碼信號無示裝置2發射的第一紅外線信號所帶二二二 號相同時’此時的第二紅外線信號就如同是圖 號L3，其减是由顯示裝置2發射的第—紅外線信號碰 201115322 反射回來的’因此可判斷在顯示裝置2前有使用者存在。 請參照圖3，其為圖2所示顯示裝置2的控制器21之控制流 程，。首先，在步驟S31時，控制器21判斷顯示裝置2的顯示書 面疋否開啟。若顯示裝置2的顯示畫面開啟，則執行步驟。若 顯示裝置2的顯示晝面關閉，則執行步驟S36。 在步驟S32時(顯示裝置2的顯示晝面開啟），控制器21先判 斷是否接收到來自紅外線接收器23傳送過來的第二紅外線信號。 若接收到第二紅外線信號，表示在顯示裝置2前可能有使用者存 則執行步驟S33 α進-步判斷第二紅外線信毅否帶有編碼 信號，這裡的編碼信號指的是第一紅外線信號所帶有的編碼信 號。若判斷第二紅外線信號帶有編碼信號，表示在顯示裝置^^ 有使用者存在，則執行步驟S34，將顯示晝面亮度調整為使用者^ 定亮度(例如使其亮度為80)。若控制器21在步驟S32時判斷未^ 收到第二紅外線信號、或者在步驟S33時判斷接收到的第二紅外 線信號未帶有編碼信號，表示在顯示裝置2前沒有使用者存在， 則執行步驟S351。 ’ 由於種種原因，使用者不希望在離開顯示裝置2 一段時間（這 段時間即後面所述的蚊時間）之後，顯示裝置2就降低顯示晝面 焭度(例如使其亮度為20或0)’因此使用者可藉由使用者介面（圖 中未繪示)輸入調整設定時間的命令到控制器21，這個設定時間例 如是0分、1分、3分等以分為單位的時間。然後，在步驟咖 時，控制器21則判斷是否超過設定時間。若判斷超過設定時間， 表示在顯示裝置2前在設定時間内沒有使用者存在，則執行^驟 S352，降低顯示畫面亮度(例如使其亮度為2〇或〇)以降低耗 若判斷未超過設定時間，表不在顯示裝置2前在設定時間内曾經 有使用者存在，則回到步驟S32繼續偵測。當然，當設定時^為 201115322 顯示裝置2之後，_置2立刻就降低顯 不晝面冗度（例如使其亮度為2〇或〇)。 在步驟S36時(顯示裝置2的顯示晝 =rf:r線接收器23傳送過來二：= =號，表轉_裝置2前可能有使用者存 m$ U進—步靖第二紅外線健是否帶有編碼 …w賴編碼信制樣是指第— i ’耻顯示晝面，這時通常設計顯 在步驟S36時判斷未其亮度為8〇)。若控制器21 - 收到第—紅外線信號、或者在步驟S37時 前、、Λ有使縣；^紅外線域未帶搞碼錄，表示在顯示裝置2 度=)使用者存在，則執行步驟S39，繼續關閉顯示晝面(使其亮 円4 m 4 ^本發聰不裝置之第二實施例之電路方塊圖。請參昭 i與圖2所示顯示裝置2差異僅在於_ 2广节田卫祕。 進步輸出偵測距離控制信號，偵測距離杵 外線發射器42發射帶有編媽信號的第一紅外^ ϊίΓϊ 使用者可藉由使用者介面（®中未繪示)輸入調 整偵測距離的命令到控告丨哭調 偵測距離控制信勤 =4_命令_目應的 的發射距離。 發射益42，以調整紅外線發射器42 請參照圖5Α及圖5Β，其為圖4所示顯示裝置4紅外 帶二=離之f視不意圖。顯示裝置4的紅外線發射器42發射 的第一紅外線信號的發射角度為α(如120度)，： 離為DK如h 5公尺），最小發射距離為D2(如G. 5公尺)。 11 201115322 =中^^接收第二紅外線信號的發射角度 脸“以 又5十為固定長度，因此設計這個接收距 發射二的第—紅外線信號的最大 6寸、外線1射器42的發射距離不論如何調整，豆 馬信號的第—紅外線信號只要碰到使用者反射射 為紅外線接收器23所接收到。 交 圖fi I β ^本么明顯不裝置之第三實施例之電路方塊圖。請來昭 =66與圖4所示顯示裝置4差異僅在於顯^ 度權^ 進-擅織_#號，偵測靈敏 編二發射器62每隔發射時間發射-次帶有 ^號的第一紅外線信號，這個發射時間例如是0秒、i秒3 靈敏。當發射時間越短時，顯示震置6的價測 相對比較高。當發射時間為零時，顯示 裝：6的、，工外線發射器62將持續發射帶有 2。當這個發射時間不為零時，其顯然必須設計=前== 二用者可藉由使用者介面（圖中未繪示)輸入調㈣測靈 又、叩7到控制器61 ’使控制器61根據命令輸出相偵: =控制信號到紅外線發射㈣，以調整紅外線發射ιΓ_= 收二戶發明顯示裝瓣其上設置紅外線發射器及接 =、，^的反射式稍铜H，由紅祕魏器鶴帶有編碼何 广示畫面開啟時’當紅外線接收11在設定‘ 間内接收到帶有相同編碼信號的紅外線信號時 前在設Γ間内有使用者存在，當紅外線接收器在設定 接收到4相同編碼信號的紅外線信號時，表示在顯示襄置前在 設定時間内沒有制者存在，織根__朗者存在與否自 201115322 動調整顯示畫面亮度以降低功耗。本發明顯示裝置既不會發生如 先前技術所述的誤判情形，亦不需要使用者佩帶任何東西。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定本 發明，任何熟習此技藝者，在不脫離本發明之精神和範圍内，當 可作些許之更動與潤飾’因此本發明之保護麵當視後附 專利範圍所界定者為準。 ° 【圖式簡單說明】1A Infrared scorpion, and converts the second infrared signal into a corresponding two to controller 21, where the second infrared ray is like the infrared test L3' heart of Figure H. Since the infrared code (4) of each transposition shop is usually designed to be unique and unique, when the coded signal of the second infrared _ = is not the same as the first infrared signal emitted by the display device 2, the same number 2' The second infrared signal at this time is like the figure number L3, which is the reflection of the first-infrared signal emitted by the display device 2 from 201115322. Therefore, it can be judged that there is a user in front of the display device 2. Please refer to FIG. 3, which is a control flow of the controller 21 of the display device 2 shown in FIG. 2. First, at step S31, the controller 21 judges whether or not the display of the display device 2 is turned on. If the display screen of the display device 2 is turned on, the steps are performed. If the display screen of the display device 2 is closed, step S36 is performed. At the step S32 (the display screen of the display device 2 is turned on), the controller 21 first judges whether or not the second infrared ray signal transmitted from the infrared ray receiver 23 is received. If the second infrared signal is received, it indicates that there may be a user in front of the display device 2, and then step S33 is performed to determine whether the second infrared signal has a coded signal, where the coded signal refers to the first infrared signal. With the encoded signal. If it is determined that the second infrared signal has an encoded signal, indicating that there is a user present in the display device, step S34 is performed to adjust the brightness of the display surface to the brightness of the user (for example, the brightness is 80). If the controller 21 determines in step S32 that the second infrared signal is not received, or determines that the received second infrared signal does not carry the encoded signal in step S33, indicating that no user exists before the display device 2, the execution is performed. Step S351. 'For various reasons, the user does not want to display the device 2 to reduce the display pupil temperature (for example, to make the brightness 20 or 0) after leaving the display device 2 for a period of time (this time is the mosquito time described later). Therefore, the user can input a command for adjusting the set time to the controller 21 through a user interface (not shown). The set time is, for example, 0 minutes, 1 minute, 3 minutes, etc., divided into units of time. Then, at the time of the step, the controller 21 judges whether or not the set time is exceeded. If it is determined that the set time is exceeded, it means that there is no user in the set time before the display device 2, then step S352 is executed to reduce the brightness of the display screen (for example, the brightness is 2 or 〇) to reduce the consumption and not exceed the setting. When the time does not exist before the display device 2 for a set time, the process returns to step S32 to continue the detection. Of course, when setting ^ is 201115322 display device 2, _set 2 immediately reduces the display surface redundancy (for example, its brightness is 2 〇 or 〇). At the step S36 (display 昼=rf of the display device 2: the r line receiver 23 transmits the second:== number, the table _ device 2 may have a user save m$ U in advance - the second infrared health step With the code ... w y coded letter preparation refers to the first - i 'shame display face, then usually designed to show that the brightness is not 8 〇 when step S36). If the controller 21 - receives the first - infrared signal, or before the step S37, the 县 has the county; the infrared field does not carry the code record, indicating that the display device 2 degrees =) the user exists, then step S39 is performed , continue to close the circuit block diagram of the second embodiment of the display device (which makes it bright 4 m 4 ^ 本发聪不装置). Please refer to the display device 2 shown in Figure 2 differs only in the _ 2 Guangjietian Guardian. Improved output detection distance control signal, detection distance 杵 发射 发射 42 42 42 发射 发射 发射 发射 第一 第一 第一 第一 第一 第一 第一 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者 使用者The command of the distance to the accusation 丨 调 侦测 距离 = = = = = 4 4 4 4 4 = = = = = = = 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整The infrared ray of the display device 4 is not intended to be. The first infrared ray signal emitted by the infrared ray emitter 42 of the display device 4 has an emission angle of α (e.g., 120 degrees), and is separated from DK (e.g., 5 meters). The minimum emission distance is D2 (eg G. 5 meters). 11 201115322 = Medium ^^ Receive the second infrared signal's emission angle face "with a fixed length of 50 degrees, so the maximum distance of 6 inches of the infrared signal transmitted from the second transmission of the second transmission, the emission distance of the external line emitter 42 is designed regardless of How to adjust, the first-infrared signal of the bean horse signal is received by the infrared receiver 23 as long as it encounters the user's reflected radiation. The cross-sectional diagram of the circuit diagram of the third embodiment is obviously not installed. The display device 4 shown in FIG. 4 differs from the display device 4 shown in FIG. 4 only in that the display of the sensitive device 2 is transmitted, and the first sensitive infrared device 62 emits the first infrared light with the ^ number. Signal, this transmission time is, for example, 0 seconds, i seconds 3. Sensitive. When the transmission time is shorter, the price measurement of the display of the shock 6 is relatively high. When the transmission time is zero, the display: 6, the external line emission The device 62 will continue to transmit with 2. When this launch time is not zero, it obviously has to be designed = before == The second user can input the input through the user interface (not shown) (4) Detecting and 叩7 to the controller 61' causes the controller 61 to output according to the command Detect: = control signal to infrared emission (four), to adjust the infrared emission ιΓ_= Received two households to display the embossed on the set of infrared emitters and connected =,, ^ reflective red copper H, by the red secret Wei crane When the coded He Guang display is turned on, 'When the infrared receiving signal 11 receives the infrared signal with the same coded signal in the setting, there is a user in the setting room, and when the infrared receiver receives the same coded signal in the setting 4 In the case of the infrared signal, it means that there is no maker in the set time before the display device, and the presence or absence of the root__lang is adjusted to reduce the power consumption from 201115322 to reduce the power consumption. The display device of the present invention does not occur as before. In the case of the misjudgment described in the art, the user is not required to wear anything. Although the invention has been disclosed in the preferred embodiments as above, it is not intended to limit the invention, and anyone skilled in the art can And within the scope, when some changes and refinements can be made, the protective surface of the present invention is subject to the definition of the patent scope. ° [Simple diagram Bright】
圖1A及圖1B為本發明顯示裝置藉由摘測使用者存在與否自 動調整顯不畫面亮度以降低功耗之示意圖。 、 圖2為本發明顯示裝置之第一實施例之電路方塊圖。 圖3為圖2所稍示裝置的控制H之㈣流程圖。 圖4為本發錢置n侧之電路方塊圖。 所不顯示裴置紅外線發射距離及接收距 圖5A及圖5B為圖4 離之俯視示意圖。 圖6為本發明顯示裝置之笛_ 衣置<第二實施例之電路方塊圖。 【主要元件符號說明】 1 :顯示裝置 11 ·顯不晝面 12 :紅外線發射器 13 :紅外線接收器 2、4、6:顯示裝置 21、41、61 :控制器 201115322 22、42、62 :紅外線發射器 23 :紅外線接收器 24 :背光源驅動電珞 25 :背光源 26 .液晶面板 α:發射角度 D1 :最大發射距離 D2 :最小發射距離 LI、L2、L3、L4 :帶有編碼信號的紅外線信號 L2’ 、L3’ ：反射的帶有編碼信號的紅外線信號 L5 :未帶有編碼信號的紅外線信號 S31〜S39 :顯示裝置的控制器之控制流程步驟 531 :顯示晝面開啟？ 532 :接收到第二紅外線信號？ 533 :第二紅外線信號帶有編碼信號？ 534 :將顯示晝面亮度調整為使用者設定亮度 5351 :超過設定時間？ 5352 :降低顯示晝面亮度 536 :接收到第二紅外線信號？ 537 :第二紅外線信號帶有編碼信號？ 201115322 538 :開啟顯示晝面 539 :繼續關閉顯示晝面1A and FIG. 1B are schematic diagrams showing the display device of the present invention automatically adjusting the brightness of the display screen to reduce the power consumption by extracting the presence or absence of the user. 2 is a circuit block diagram of a first embodiment of a display device of the present invention. Figure 3 is a flow chart (4) of the control H of the device shown in Figure 2. Figure 4 is a block diagram of the circuit on which the money is placed on the n side. The infrared radiation emission distance and the reception distance are not shown. Fig. 5A and Fig. 5B are schematic plan views of Fig. 4 . Figure 6 is a block diagram of a second embodiment of a display device of the present invention. [Description of main component symbols] 1 : Display device 11 · Display surface 12 : Infrared transmitter 13 : Infrared receiver 2, 4, 6: Display devices 21, 41, 61: Controller 201115322 22, 42, 62: Infrared Transmitter 23: Infrared receiver 24: Backlight drive unit 25: Backlight 26. Liquid crystal panel α: Emission angle D1: Maximum emission distance D2: Minimum emission distance LI, L2, L3, L4: Infrared with coded signal Signals L2', L3': reflected infrared signal L5 with coded signal: infrared signal S31~S39 without coded signal: control flow of controller of display device Step 531: Display face open? 532: Received the second infrared signal? 533: The second infrared signal has an encoded signal? 534 : Adjust the display brightness to the user setting brightness 5351 : Exceeding the set time? 5352 : Reduce the brightness of the display surface 536 : Receive the second infrared signal? 537: Is the second infrared signal with an encoded signal? 201115322 538 : Turn on the display 539 : Continue to close the display
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