201205426 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種電子看板，特別涉及一種可與觀看者進 行互動的用於展示資訊的電子看板。 【先前技術】 [0002] 現今，通過廣告的方式贏得客戶已成為推銷產品的重要 手段。目前，戶外或者公共場合應用最多的廣告裝置是 可顯示動態或視頻廣告内容的電子看板，該種電子看板 可聲色並茂地將產品和促銷資訊呈現給觀看者。因為要 適應不同的場所，所以電子看板的尺寸大小不一，所展 示的廣告内容的畫面尺寸往往受到局限，無論觀看者距 離看板很遠或者很近，電子看板始終以固定的比例顯示 廣告内容。另外，現有的電子看板大多僅能顯示預先設 定的媒體資訊，無法與觀看者進行互動。 [0003] 有鑒於此，有必要提供一種可改變顯示比例，並且可與 觀看者進行互動的電子看板，以解決上述問題。 【發明内容】 [0004] 本發明提供一種可改變顯示比例，並且可與觀看者進行 人機交互的電子看板。 [0005] 一種電子看板，包括一顯示單元、一存儲單元，該存儲 單元存儲有供電子看板播放的數位内容。存儲單元中還 存儲有一觀者距離與顯示比例對應關係表，該觀者距離 與顯示比例對應關係表定義了不同的觀者距離與顯示比 例的對應關係，該電子看板還包括：一距離感測單元， 用於偵測觀看者與電子看板的距離，即觀者距離；及一 099124095 表單編號A0101 第4頁/共18頁 0992042392-0 201205426 處理單元，其勺^ 組，所述模式選S〜模式選擇模、師—顯料例控制模 的比較結果組用於根據觀者距離與-預定距離 於在一特定的楹4目應的顯示模式。顯示比例控制模組用 示比例對應關係^下根據觀者距離以及該觀者距離與 示。 ’、检制顯示單元根據該顯示比例進行 顯 Si [0006] 本發明的電子看 行互動。 披可改變顯不比例’並且可與觀看者進 Ο [0007] [0008] [0009] 099124095 【實施方式】 下面將結合附圏， ’對本發明作進一步的詳細說明。 請一併參閱圖】 為一長方體，圖3。在本實施方式中，該電子看板1〇〇 其包括顯示單元10、距離感測單元20、存 儲早兀30、虛„„ 甘 處理事元40、操作單元50。 距離感測單元2 〇 ω 用於偵測觀看者與電子看板1〇〇的距離， 即觀者距離。其φ 、肀，該.距蜂感”外單先2〇可s债測的範圍或 距離可根據需 礙行設定，或遷擇相應的距離感測單元 20。在本實施太4 ^ ^ ^ 々式中，該鉅離感測單元20為超聲波感測 器，設置於電子丢l " 有板100的前表面的一或多個特定位置， J 邊忙的中央位置。眾所周知，超聲波感測器包括 超聲波發射器、扣& 超聲波接收器、運算單元、計時器。超 聲波發射器每陪__ α + ~~#又時間t發射一次超聲波，該時間七大 ; /最大距離時回波被接收到的時間與發射時間 的間隔。該騎㈣達觀看者後形成回波，而後被超聲 波接》計時^記錄超聲波發射的時間以及回波 時間°運算單元根據發射出超聲波與接收到 货 C nr，·· 一 第5頁/共18頁 0992042392-0 201205426 回波的時間間隔，計算出電子看板100與觀看者的距離。 [0010] 存儲單元30中除存儲有供電子看板播放的數位内容以及 其他相關資訊外，還存儲有一觀者距離與顯示比例對應 關係表31，請參閱圖2，該觀者距離與顯示比例對應關係 表定義了不同的觀者距離與顯示比例的對應關係，在一 實施方式中，觀者距離與顯示比例對應關係表中的每一 觀者距離為一距離段，例如觀看者離電子看板100的距離 :小於3米為一觀者距離、3米至小於7米為另一觀者距離 ，以此類推，每一觀者距離對應一縮放比利。在另一實 施方式中，觀者距離越大，縮放比例越大，也就是說， 觀者距離與縮放比例呈線性正比關係6 [0011] 該處理單元40包括模式選擇模組41以及顯示比例控制模 組42。 [0012] 模式選擇模組41根據觀者距離與一預定距離的比較結果 選擇相應的顯示模式。 [0013] 顯示比例控制模組42根據觀者距離以及該觀者距離與顯 示比例對應關係表控制顯示單元1 0以相應的顯示比例進 行顯示。 [0014] 其中，當距離感測單元20感測到的觀者距離有多個時， 即有多個觀看者在不同位置觀看電子看板1〇〇時，顯示比 例控制模組42計算出所有觀者距離的平均值，根據該平 均值確定最終的平均觀者距離，然後根據該平均觀者距 離以及觀者距離與顯示比例對應關係表以相應的顯示比 例進行顯示。 099124095 表單編號A0101 第6頁/共18頁 0992042392-0 201205426 [0015] 在本實施方式中，顯示模式包括一縮放模式和一交互模 式。 [0016] 田該距離感測單元2G感測到的觀者距離大於—預設距離 LA時’模式選擇模組41選擇縮放模式，並產生_縮放模 式顯不指令至顯示比例控制模組42，該顯示比例控制模 組4 2根據該觀者距離以及觀者距離與顯示比例對應關係 表，確定該觀者距離對應的顯示比例，並控制顯示單元 10根據該顯示比例來顯示預設的顯示内容。 Ο [0017] 當5亥距離感測單元2〇感測到的觀者距離至少有一個小於 預設距離LA時’模式選擇模組41選擇交互模式，控制該 顯不單元10處於該交互模式，控制顯示單元10顯示一操 作介面’並控制操作單元50開啟，該操作單元5〇開啟後 ，可回應用戶在操作介面的操作產生輸入控制命令。 [0018] 當偵測區域内沒有觀看者時，顯示單元1〇以最大比例顯 示預設的顯示内容。 q [0019] 請一併參閱圖3和圖4，圖3為觀看者處於第一距離L1時顯 示單元10以第一顯示比例顯示的畫面，圖4為觀看者處於 第二距離L2時顯示單元1〇以第二顯示比例顯示的畫面。 其中’第一距離L1和第二距離L2均大於預設距離LA，並 且第一距離L1大於第二距離L2。因此，當觀看者處於第 一距離L1時’顯示比例控制模組42控制該顯示單元10以 第一顯示比例顯示畫面，當觀看者處於第二距離L2時， 顯示比例控制模組4 2控制該顯示單元10以第二顯示比例 顯示畫面。由於第一距離L1大於第二距離L2，因此，如 099124095 表單编號A0101 第7頁/共18頁 0992042392-0 201205426 圖3及圖4所示，觀看者處於較大的第一距離L1下時顯示 單元10顯示的第一顯示晝面1 2大於觀看者處於較小的第 二距離L2時顯示單元10顯示的第二顯示晝面13，即觀看 者處於較遠距離内時顯示單元1 0以較大比例顯示畫面、 而在觀看者處於較近距離内時顯示單元10以較小比例顯 示晝面。 [0020] 請參閱圖5，若有觀看者處於第三距離L3，L3小於預設距 離LA，模式選擇模組41控制該顯示單元10處於該交互模 式，並控制顯示單元10顯示一操作介面14，例如，圖形 用戶介面（Graphical User Interface，GUI)，並 控制操作單元50開啟，供觀看者對電子看板100進行操作 ，實現人機交互。在本實施方式中，該操作單元50為一 觸摸面板，在其他實施方式中，該操作單元50可以是滑 鼠、五向按鍵、鍵盤、手勢控制模組，或者這些輸入裝 置的組合。 [0021] 請參閱圖6，在圖6所示實施方式中，電子看板100是大型 電子看板，電子看板100同時以縮放模式和交互模式進行 顯示，顯示單元顯示一分屏介面，該分屏介面包括一第 一顯示介面151以及一第二顯示介面152。第一顯示介面 151以該縮放模式顯示畫面，第二顯示介面152以該交互 模式顯示一操作介面供用戶選擇操作。如前所述，第一 顯示介面1 51顯示的畫面的顯示比例根據大於預設距離LA 的觀者距離來確定。如此，大型電子看板100既可以通過 第一顯示介面1 51採用縮放模式顯示廣告内容吸引顧客， 又可以在第二顯示介面152呈現操作介面供距離較近的觀 099124095 表單編號A0101 第8頁/共18頁 0992042392-0 201205426 看者更進一步地流覽企業資訊或者產品資訊等。 [0022] 該電子看板100還包括供電模組（圖中未示），為該顯示 單元10、距離感測單元20、存儲單元30、處理單元40、 操作單元50提供電源。 [0023] 應該指出，上述實施方式僅為本發明的較佳實施方式， 本領域技術人員還可在本發明精神内做其他變化。這些 依據本發明精神所做的變化，都應包含在本發明所要求 保護的範圍之内。 【圖式簡單說明】 [0024] 圖1為本發明第一實施方式中的電子看的系統模組圖。 [0025] 圖2為圖1中的電子看板的存儲單元中存儲的觀者距離與 顯示比例對應關係表的示意圖。 [0026] 圖3為當觀看者處於第一距離時，圖1中的電子看板的顯 示狀態示意圖。 [0027] 圖4為當觀看者處於第二距離時，圖1中的電子看板的顯 示狀態示意圖。 [0028] 圖5為當觀看者處於第三距離時，圖1中的電子看板的顯 不狀fe不意圖。 [0029] 圖6為本發明另一實施方式中電子看板的顯示狀態示意圖 〇 【主要元件符號說明】 [0030] 電子看板：100 [0031] 顯示單元：10 099124095 表單編號A0101 第9頁/共18頁 0992042392-0 201205426 [0032] 距離感測單元：20 [0033] 存儲單元：30 [0034] 觀者距離與顯示比例對應關係表：31 [0035] 處理單元：40 [0036] 模式選擇模組：41 [0037] 顯示比例控制模組：42 [0038] 操作單元：50 [0039] 第一顯示晝面：12 [0040] 第二顯示畫面：13 [0041] 操作介面：14 [0042] 第一顯示介面：151 [0043] 第二顯示介面：152 099124095 表單編號A0101 第10頁/共18頁 0992042392-0201205426 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to an electronic signage, and more particularly to an electronic signage for displaying information that can interact with a viewer. [Prior Art] [0002] Nowadays, winning customers through advertising has become an important means of selling products. Currently, the most widely used advertising device for outdoor or public use is an electronic signboard that can display dynamic or video advertising content, which can present products and promotional information to viewers with great brilliance. Because of the size of the electronic kanban, the size of the electronic kanban is often limited. The size of the displayed advertising content is often limited. The electronic kanban always displays the advertising content at a fixed scale regardless of whether the viewer is far away or close to the kanban. In addition, most of the existing electronic billboards can only display pre-set media information and cannot interact with viewers. In view of the above, it is necessary to provide an electronic signage that can change the display ratio and interact with the viewer to solve the above problem. SUMMARY OF THE INVENTION [0004] The present invention provides an electronic signage that can change the display ratio and can interact with a viewer. [0005] An electronic signboard includes a display unit and a storage unit, the storage unit storing digital content for playing by an electronic billboard. The storage unit further stores a table of relationship between the viewer distance and the display ratio. The viewer distance and the display ratio correspondence table define different correspondence between the viewer distance and the display ratio, and the electronic signboard further includes: a distance sensing The unit is configured to detect the distance between the viewer and the electronic kanban, that is, the viewer distance; and a 099124095 form number A0101 page 4/total 18 page 0992042392-0 201205426 processing unit, the spoon group, the mode selects S~ The comparison result group of the mode selection mode, the teacher-display example control mode is used for the display mode according to the viewer distance and the predetermined distance in a particular frame. The display proportional control module uses the proportional correspondence relationship ^ according to the viewer distance and the viewer distance. The inspection display unit performs the electronic viewing interaction according to the display ratio according to the display ratio. The present invention will be further described in detail below with reference to the accompanying drawings, which are incorporated herein by reference. Please refer to the figure together for a rectangular box, Figure 3. In the present embodiment, the electronic signboard 1 includes a display unit 10, a distance sensing unit 20, a storage device 30, a virtual device 40, and an operation unit 50. The distance sensing unit 2 〇 ω is used to detect the distance between the viewer and the electronic kanban, that is, the viewer distance. Its φ, 肀, the distance from the bee sense "outside single 2 〇 s s debt measurement range or distance can be set according to the need, or move the corresponding distance sensing unit 20. In this implementation too 4 ^ ^ ^ In the formula, the macro-sensing unit 20 is an ultrasonic sensor disposed at one or more specific positions of the front surface of the board 100, and the central position of the side of the J. It is known that the ultrasonic sensing is performed. The device includes an ultrasonic transmitter, a buckle & an ultrasonic receiver, an arithmetic unit, and a timer. The ultrasonic transmitter transmits an ultrasonic wave every time __α + ~~#, and the time is seven; the maximum distance is echoed The interval between the received time and the transmission time. The ride (four) reaches the viewer and forms an echo, and then is ultrasonically connected. The time is recorded and the echo time is recorded. The arithmetic unit transmits the ultrasonic wave according to the received signal and receives the C nr. , a page 5 of 18 pages 0992042392-0 201205426 The time interval of the echo, the distance between the electronic kanban 100 and the viewer is calculated. [0010] The storage unit 30 stores digital content for electronic kanban playback and Other phase In addition to the information, a table 31 corresponding to the viewer distance and the display ratio is stored. Referring to FIG. 2, the relationship between the viewer distance and the display ratio defines different correspondence between the viewer distance and the display ratio. In the mode, each viewer distance in the viewer distance and display ratio correspondence table is a distance segment, for example, the distance of the viewer from the electronic kanban 100: less than 3 meters is a viewer distance, and 3 meters to less than 7 meters is Another viewer distance, and so on, each viewer distance corresponds to a zoom ratio. In another embodiment, the larger the viewer distance, the larger the zoom ratio, that is, the viewer distance and the zoom ratio are Linear proportional relationship 6 [0011] The processing unit 40 includes a mode selection module 41 and a display scale control module 42. [0012] The mode selection module 41 selects a corresponding display mode based on a comparison result of the viewer distance and a predetermined distance. [0013] The display scale control module 42 controls the display unit 10 to display at a corresponding display ratio according to the viewer distance and the viewer distance and display scale correspondence table. When there are a plurality of viewer distances sensed by the distance sensing unit 20, that is, when a plurality of viewers view the electronic billboard 1 at different positions, the display scale control module 42 calculates an average value of all viewer distances. The final average viewer distance is determined according to the average value, and then displayed according to the average viewer distance and the viewer distance and display ratio correspondence table at a corresponding display ratio. 099124095 Form No. A0101 Page 6 of 18 0992042392 -0 201205426 [0015] In the present embodiment, the display mode includes a zoom mode and an interactive mode. [0016] When the distance of the viewer sensed by the distance sensing unit 2G is greater than the preset distance LA, the mode selection module 41 selects the zoom mode, and generates a zoom mode display command to the display scale control module 42. The display ratio control module 42 determines the display ratio corresponding to the viewer distance according to the viewer distance and the viewer distance and the display ratio correspondence table, and controls the display unit 10 to display the preset display content according to the display ratio. . [0017] When the perceived distance of the 5 HAI distance sensing unit 2 至少 is at least one less than the preset distance LA, the mode selection module 41 selects the interaction mode, and controls the display unit 10 to be in the interaction mode. The control display unit 10 displays an operation interface 'and controls the operation unit 50 to be turned on. After the operation unit 5 is turned on, an input control command can be generated in response to the user's operation at the operation interface. [0018] When there is no viewer in the detection area, the display unit 1 displays the preset display content at the maximum scale. [0019] Please refer to FIG. 3 and FIG. 4 together. FIG. 3 is a screen of the display unit 10 displayed at a first display scale when the viewer is at the first distance L1, and FIG. 4 is a display unit when the viewer is at the second distance L2. 1〇 The screen displayed in the second display scale. Wherein the first distance L1 and the second distance L2 are both greater than the preset distance LA, and the first distance L1 is greater than the second distance L2. Therefore, when the viewer is at the first distance L1, the display scale control module 42 controls the display unit 10 to display the screen at the first display scale, and when the viewer is at the second distance L2, the display scale control module 42 controls the The display unit 10 displays the screen at the second display scale. Since the first distance L1 is greater than the second distance L2, for example, 099124095 Form No. A0101 Page 7 / Total 18 Page 0992042392-0 201205426 As shown in Figures 3 and 4, when the viewer is at a larger first distance L1 The first display surface 12 displayed by the display unit 10 is larger than the second display surface 13 displayed by the display unit 10 when the viewer is at the second second distance L2, that is, the display unit 10 is displayed when the viewer is in a relatively long distance. The display is displayed in a larger scale, and the display unit 10 displays the face at a smaller scale when the viewer is in a closer distance. Referring to FIG. 5, if the viewer is at the third distance L3 and L3 is less than the preset distance LA, the mode selection module 41 controls the display unit 10 to be in the interactive mode, and controls the display unit 10 to display an operation interface 14. For example, a graphical user interface (GUI), and the control operation unit 50 is turned on for the viewer to operate the electronic kanban 100 to realize human-computer interaction. In this embodiment, the operating unit 50 is a touch panel. In other embodiments, the operating unit 50 can be a mouse, a five-way button, a keyboard, a gesture control module, or a combination of these input devices. [0021] Referring to FIG. 6, in the embodiment shown in FIG. 6, the electronic kanban 100 is a large electronic kanban, and the electronic kanban 100 is simultaneously displayed in a zoom mode and an interactive mode, and the display unit displays a split screen interface, and the split screen interface A first display interface 151 and a second display interface 152 are included. The first display interface 151 displays the picture in the zoom mode, and the second display interface 152 displays an operation interface in the interactive mode for the user to select. As previously mentioned, the display scale of the picture displayed by the first display interface 151 is determined based on the viewer distance greater than the preset distance LA. In this way, the large electronic signage 100 can display the advertisement content in the zoom mode through the first display interface 151 to attract the customer, and the second display interface 152 can present the operation interface for the closer distance. 099124095 Form No. A0101 Page 8 / Total 18 pages 0992042392-0 201205426 The viewer goes further to the company information or product information. [0022] The electronic signage 100 further includes a power supply module (not shown) for supplying power to the display unit 10, the distance sensing unit 20, the storage unit 30, the processing unit 40, and the operating unit 50. [0023] It should be noted that the above-described embodiments are merely preferred embodiments of the present invention, and those skilled in the art may make other changes within the spirit of the present invention. All changes made in accordance with the spirit of the invention are intended to be included within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [0024] FIG. 1 is a block diagram of an electronic viewing system in a first embodiment of the present invention. 2 is a schematic diagram of a table of correspondence between viewer distance and display ratio stored in a storage unit of the electronic signage of FIG. 1. 3 is a schematic diagram showing a display state of the electronic signage of FIG. 1 when the viewer is at the first distance. 4 is a schematic diagram showing a display state of the electronic signboard of FIG. 1 when the viewer is at the second distance. [0028] FIG. 5 is a view showing the appearance of the electronic signboard of FIG. 1 when the viewer is at the third distance. 6 is a schematic diagram showing a display state of an electronic signboard according to another embodiment of the present invention. [Description of Main Component Symbols] [0030] Electronic Kanban: 100 [0031] Display Unit: 10 099124095 Form No. A0101 Page 9 of 18 Page 0992042392-0 201205426 [0032] Distance sensing unit: 20 [0033] Storage unit: 30 [0034] Viewer distance and display ratio correspondence table: 31 [0035] Processing unit: 40 [0036] Mode selection module: [0037] Display Proportional Control Module: 42 [0038] Operating Unit: 50 [0039] First Display Face: 12 [0040] Second Display Screen: 13 [0041] Operation Interface: 14 [0042] First Display Interface: 151 [0043] Second display interface: 152 099124095 Form number A0101 Page 10 / Total 18 pages 0992042392-0