1295441 14513twf.doc/y 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種輸入裝置，且特別是有關於一種 藉由外部光線或感應脈波來辨識影像位置的輸入裝置與影 像輸入的控制方法。 & ’、心 【先前技術】 在現今多元化之科技產品中，擁有快速的傳輪效率以 及人性化的操作界面，已成為未來市場之主流。在電腦周 邊設備中，常見的輸入裝置例如是鍵盤、滑鼠、軌跡球、 手寫辨識、語音辨識以及觸控板等等，以作為使用者與機 器之間溝通的橋樑或人機界面。以滑鼠為例，其依照資料 傳輸/控制方式的不同又可區分為有線滑鼠、無線滑^、'滚 輪滑鼠、光學滑鼠等等。其中，光學滑鼠利用内部一光源 所產生的光學訊號來讀取動態影像，並對應產生一游標於 螢幕上。因此，當使用者移動光學滑鼠時，游標的位置也 會隨之改變，並可按下光學滑鼠之控制鍵，以輸入一訊號 或指令。 上述之輸入裝置除了用在電腦周邊設備之外，亦可運 用在隨身攜帶的手持電子裝置上，例如是行動電話、個人 數位化助理（PDA)以及全球定位系統（gpS)接收器等。 常見配置於手持電子裝置上之輸入裝置例如以觸控筆點選 螢幕上之圖案化使用者界面（Graphical User Interface， GUI)，或是以按鍵直接進行選單的操作。此外，美國專利 公告第·6,677,929號揭露一種利用光學辨識指紋的影像輸入 1295441 14513twf.doc/y '主^者圖H用於行動電話的操作型態上。 〇月'考圖其1 會示美國專利公告第6 677929號之- = =入裝置8具有-，光源9，其位於 光後至旦/傻於入F於Κ象轉換器1〇。此光源9投射一 透鏡2〇,最後聚焦於影像 影像轉換器10藉由辨識指紋之變化 動 勞!之一游標位置，進而顯示 來辨識:;ί ，t述利用一光源9所產生的光學訊號 來辨U象的方法，其功效如同光學滑鼠，但由於光 ==置的狀態下也必須處在開啟的狀態，因此耗電 相對增加’並使電池的待機時間相對縮小。此外， =於殼體7 N，將使原本如利用有限的殼 更 = 原9組裝於電路板上之高度也使得強調輕3 冋日守增加生產的成本。 、且衣 【發明内容】 本發_目的就是在提供—種輸人 不需是提供—種影像輸人的控制方法， 耗電^ / 件來辨識影像，以節省電池之 本發明提出-種輸入裝置，適用於一手持電子農置， 1295441 14513twf.doc/y 包括一殼體、一影像輸入單元、一訊 ίΠΐ單元。殼體具有一透光視窗，其位‘:體之 -表面’ W使—外部光、㈣過透光視窗而 此外，影像輸人單元配置於殼體中且位於透光視 用以f收外部光線’當—影像遮蔽透光視窗之-部分表面 時，影像輸入單元對應產生一影像訊號 = 轉，-第-訊號以及一第二訊號，其中第一訊：來= 識該衫像的位置。另外，訊號控制單元配置於殼體中且電 入ί元’用以接收第一與第二訊號，當影像 ΐίϋ二:標位置（Χ1，Υ1)移動時，訊號控制 早讀應於W像之移動路徑而產生—第—座標位移量 二)與-第二座標位移量（Δγ)。再者，顯示單元配置於 Λ又體上且電性耦接訊號控制單元，用以接收第一座桿位置 (χι，γι)、第一座標位移量（λχ)與第二座標位移^ (△ Υ)，並顯示一游標由第一座標位置（Χ1，Υ1)移動至— 二座標位置（Χ1+ΔΧ，Υ1+ΔΥ)上。 依照本發明的較佳實施例所述，上述之透光視窗之材 貝例如為玻璃、塑膠、壓克力或其他透明材質、軟性材質， 而透光視窗之形狀例如為一矩形、圓形、或其他多邊形。 此外，透光視窗例如位在殼體之正面或侧邊，而一使^者 之手指適於握住殼體並遮住透光視窗，以形成該影像。 依照本發明的較佳實施例所述，上述之影像輸入單元 包括一g像感測器以及一控制電路，影像感測器具有多數 i 1295441 14513twf.doc/y 個u己憶胞’而影像遮敝透光視窗所產生的對比訊號對應纪 錄於這些記憶胞上，並傳輸至控制電路，以產生第一訊號 與第二訊號。其中，記憶胞例如呈一線性排列或一面陣列 排列’而影像感測器例如包括CMOS影像感測器，並且更 可包括一透鏡，其配置於CMOS影像感測器上方。 依知本發明的較佳實施例所述，上述之輸入裝置例如 更包括一感應開關或一按壓開關，配置於透光視窗之下， 而一使用者之手指適於按壓透光視窗而對應啟用感應開 關以產生輸入成號，或是按壓透光視窗而對應接觸按 壓開關，以產生一輸入訊號。 本考X明另k出一種輸入裝置，適用於一行動通訊裝置，該 輸入裝置包括一殼體、一輸入單元、一訊號控制單元、顯示單 元以及一按壓開關。輸入單元配置於殼體上，而輸入單元具有 多數個感應元件，當一使用者之手指放置於一部分這些感應元 件之亡時，輸入單元對應產生一感應訊號，並將感應訊號轉換 成-第-訊號以及-第二訊號，其中第一訊號用來辨識手指的 位置。此外，訊號控制單元係配置於殼體中且電性耦接輸入單 元，用以接收第一與第二訊號，當使用者之手指由一第一座桿 位置（xyi)移動時，訊號控制單元對應於手指之移動路徑^ 產生一第一座標位移量（ΔΧ)與一第二座標位移量（△¥)。 另外，顯示單元係配置於殼體上且電性耦接訊號控制單元，用 以接收第-座標位置（Χ1，Υ1)、第一座標位移量（ΔΧ)與第 二座標位移量（ΔΥ)，並顯示一游標由第一座標位置（χ/η) 移動至一第二座標位置（Χ1+ΔΧ，γι+Δγ)上。再者，按壓 1295441 14513twf.doc/y1295441 14513twf.doc/y IX. Description of the Invention: [Technical Field] The present invention relates to an input device, and more particularly to an input device and an image for recognizing an image position by external light or induced pulse wave The control method of the input. & ', heart [previous technology] In today's diversified technology products, with rapid transfer efficiency and user-friendly operation interface, has become the mainstream of the future market. In computer peripheral devices, common input devices such as a keyboard, a mouse, a trackball, handwriting recognition, voice recognition, and a touchpad are used as a bridge or human-machine interface for communication between the user and the machine. Take the mouse as an example, it can be divided into wired mouse, wireless slide, 'roller mouse, optical mouse, etc. according to different data transmission/control methods. The optical mouse uses the optical signal generated by an internal light source to read the motion image, and correspondingly generates a cursor on the screen. Therefore, when the user moves the optical mouse, the position of the cursor changes, and the optical mouse's control button can be pressed to input a signal or command. The above input devices can be used in portable electronic devices, such as mobile phones, personal digital assistants (PDAs), and global positioning system (gpS) receivers, in addition to computer peripherals. An input device that is commonly configured on a handheld electronic device, for example, uses a stylus to select a graphical user interface (GUI) on the screen, or directly performs a menu operation by pressing a button. In addition, U.S. Patent No. 6,677,929 discloses an image input using optical fingerprint recognition. 1295441 14513 twf.doc/y 'The main figure H is used for the operational type of the mobile phone. 〇月' 考图其1 will show US Patent Publication No. 6 677929 - = = the incoming device 8 has -, the light source 9, which is located after the light, or stupid into the image converter 1〇. The light source 9 projects a lens 2〇, and finally focuses on the image image converter 10 by recognizing the change of the fingerprint; one cursor position is displayed to identify: ί , t describe the optical signal generated by using a light source 9 The method of distinguishing U-images is as effective as an optical mouse, but it must be in an open state in the state of light==, so the power consumption is relatively increased' and the standby time of the battery is relatively reduced. In addition, = in the housing 7 N, will make the original assembly such as the use of a limited shell = original 9 also on the height of the board also makes the emphasis on light 3 冋 day to increase the cost of production. And clothing [invention] The purpose of this is to provide a kind of control method that does not need to provide a kind of image input, and consumes electricity to identify the image to save the battery. The device is suitable for a handheld electronic farm. 1295441 14513twf.doc/y includes a casing, an image input unit, and a signal unit. The housing has a light-transmissive window, and its position is: 'body-surface' W--external light, (4) over-transmission window, and in addition, the image input unit is disposed in the housing and is located in the transparent view When the light-image obscures part of the surface of the light-transmissive window, the image input unit generates an image signal = turn, - the first signal and a second signal, wherein the first message: to = the position of the shirt image. In addition, the signal control unit is disposed in the housing and is configured to receive the first and second signals. When the image is moved to the target position (Χ1, Υ1), the signal control early reading should be performed on the W image. Moving the path produces - the first coordinate displacement amount 2) and the - second coordinate displacement amount (Δγ). Furthermore, the display unit is disposed on the body and electrically coupled to the signal control unit for receiving the first seat position (χι, γι), the first coordinate displacement (λχ), and the second coordinate displacement ^ (△ Υ), and display a cursor moved from the first coordinate position (Χ1, Υ1) to the two coordinate position (Χ1+ΔΧ, Υ1+ΔΥ). According to a preferred embodiment of the present invention, the material of the light-transmissive window is, for example, glass, plastic, acrylic or other transparent material, soft material, and the shape of the light-transmissive window is, for example, a rectangle or a circle. Or other polygons. In addition, the light transmissive window is located, for example, on the front or side of the housing, and a finger is adapted to hold the housing and obscure the light transmissive window to form the image. According to a preferred embodiment of the present invention, the image input unit includes a g image sensor and a control circuit, and the image sensor has a plurality of i 1295441 14513 twf.doc/y The contrast signal generated by the light transmission window is recorded on the memory cells and transmitted to the control circuit to generate the first signal and the second signal. The memory cells are arranged, for example, in a linear arrangement or in an array, and the image sensor includes, for example, a CMOS image sensor, and further includes a lens disposed above the CMOS image sensor. According to a preferred embodiment of the present invention, the input device further includes an inductive switch or a push switch disposed under the light transmissive window, and a user's finger is adapted to press the light transmissive window to be enabled. The sensor switch generates an input signal or presses the light transmission window to contact the push switch to generate an input signal. The present invention is applicable to a mobile communication device, and the input device includes a casing, an input unit, a signal control unit, a display unit, and a push switch. The input unit is disposed on the housing, and the input unit has a plurality of sensing elements. When a user's finger is placed on a part of the sensing elements, the input unit generates an inductive signal and converts the sensing signal into a -first- The signal and the second signal, wherein the first signal is used to identify the position of the finger. In addition, the signal control unit is disposed in the housing and electrically coupled to the input unit for receiving the first and second signals. When the user's finger is moved by a first seatpost position (xyi), the signal control unit A first coordinate displacement amount (ΔΧ) and a second coordinate displacement amount (Δ¥) are generated corresponding to the moving path of the finger. In addition, the display unit is disposed on the housing and electrically coupled to the signal control unit for receiving the first coordinate position (Χ1, Υ1), the first coordinate displacement (ΔΧ), and the second coordinate displacement (ΔΥ). And a cursor is displayed moving from the first coordinate position (χ/η) to a second coordinate position (Χ1+ΔΧ, γι+Δγ). Furthermore, press 1295441 14513twf.doc/y
Pj關配=於輸人單元之下，而使用者之手指適於按壓輸入 早兀而對應接觸按壓開關’以產生-輸入訊號。 ^發明提出—種影像輸人的控财法，適用於—手持電子 ΐ置中手持電子裝置具有—影像輪人單Μ及-訊號控制 二’，此光學影像㈣方法包括下列步驟：開啟電源，並藉 -二ίΐ*線入?至影像輸入單元中，以使影像輸入單元處於 給丄一 t接著’遮蔽部分外部光線，以形成-影像於影像 旦^早J^Z/彡像輸人單元姆產生—影像喊，並將該 一第二訊號，其中第-訊號用來 之ί ’機時，訊驗制單元對應於影像 而產生一第一座標位移量（Δχ)與一第二座標位 座=置==位置，·一游標由 △Χ，Υ1+ΔΥ): ，）移動至―第二座標位置（Χ1+ 3„種輸入訊號的控制方法，適用於一手持 持電子裝置具有—輸入單元以及一訊號控 制早π ’而輪人單元具有多數個感應元件。此 :制=:=電源，放置—手指於-部份感二牛 手指之指紋產生-感應訊號，並將 α應λ唬轉換成一第一訊號以及一 號用來辨識手指的位置；之後，-中弟一訊 由-第-座標位置（Χ1，Υ1)開始移動日=置’虽手& 應於手指之移動路徑而產生―第― 1295441Pj is assigned to be under the input unit, and the user's finger is adapted to press the input early and correspondingly contact the push switch ' to generate an input signal. ^Inventive Proposed - A kind of image control method for controlling the input of human beings, the handheld electronic device has a - image wheel person and a signal control 2', and the optical image (4) method comprises the following steps: turning on the power, And borrowing - two ΐ ΐ * line into the image input unit, so that the image input unit is given a t t then 'shadow part of the external light to form - image in the image dan ^ early J ^ Z / 彡 image input unit When the second signal is generated, and the first signal is used, the authentication unit generates a first coordinate displacement (Δχ) and a second coordinate position corresponding to the image. Block = set == position, · a cursor from △ Χ, Υ 1 + Δ Υ): ,) moved to the "second coordinate position (Χ 1 + 3 „ kinds of input signal control method, suitable for a handheld electronic device with - input unit And a signal control early π 'and the wheel unit has a plurality of sensing elements. This: system =: = power, placement - finger in - part of the fingerprint of the second cow finger - induction signal, and α should be λ 唬 conversion Into a first signal and the number one is used to identify Position of the finger; then, - in a hearing by the brother - of - the coordinate position (Χ1, Υ1) begins to move counter date = "Although hand & corresponding to the movement path of the finger to generate - first --1295441
A 14513twf.doc/y 第一座標位移量（ΔΥ);最後，重新計算手指的位置，以 使一螢幕上之一游標由第一座標位置（X1，Y1)移動至一第 二座標位置（Χ1+ΔΧ，Υ1+ΔΥ)。 依照本發明的較佳實施例所述，上述在重新計算該影 像的位置的步驟中，當ΔΧ不等於〇，而等於^了 = Xl+Σ AX^Xmax時，可保持游標的座標位置在 Υ1)上。此外，當ΔΧ不等於〇，而△ Υ等於〇，且 Σ ΔΧ^Χιηίη時，可保持該游標的座標位置在（χι^η，γ 上。 ，^ 依照本發明的較佳實施例所述，上述在重新 像的位置的步驟中，當等於〇,而Δγ不等於：了： ΔΥ，Ymax時’保持游標的座標位置在（χι: Υ 上或移動游標的座標位置至（XI γΐ $ 外，♦八X 笼於 η 1 Λ、， J λΔΥ_γη^χ)上。此 卜田ΔΧ專於〇,而Δγ不等於〇，且γι + 時，保持游標的座標位置在（χι，γηώ) ^ = 座標位置至（χι，Υΐ+ΣΔΥ+Υηιίη)上 Α移動相_ 應產生一第一訊號於景;透而光;見窗上:位置對 影像的位置。料，#f彡像麵 ，猎以辨識 顯示單元對應於影像之移動路徑 位移量時， 池的耗電量，且不二外部光線可節省電 先原70件於電路板上，進而節省 1295441 14513 twf.doc/y 組裝的成本。 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，並配合所附圖式，作詳細說 明如下。 【實施方式】 請參考圖2A，其繪示本發明一較佳實施例一種輪入裝 置的剖面示意圖。此輸入裝置可適用於一電子裝置中，且 特別是一種可攜帶式電子裝置，例如是行動電話、個人數 位化助理（PDA)或全球定位系統（GPS)接收器。此輸入 裝置200主要包括一殼體21〇、一影像輸入單元22〇、一訊 號控制單元230以及一顯示單元240。殼體210具有一透光 視=212,其例如位於殼體21〇之上表面，以使一外部光線 22穿過透光視窗212而入射至殼體21〇中。此外，影像輸 入單元220配置於殼體210中且位於透光視窗212之下^ 用以接收外部光線22，並且可得知一影像的位置。其中， 此影像例如是由-使用者之手指3G遮蔽—部分人射至殼體 210中之外部光線24所產生的。因此，當此影像遮蔽透光 視窗212之一部分表面時，影像遮蔽於透光視窗212上的 位置對應產生-光訊號於影像輸人單元22()中，而未被影 像遮=之其餘透光視窗212上的位置也相對產生另一光訊 號，藉以辨識影像的位置。也就是說，藉由影像輸入單元 220所接收之外部光線22 $人光量不$，以使影像輸入單 元220對應產生―影像訊號，並可將影像訊號轉換成一第 -訊號芦-第二訊號，且第—訊號用來辨識影像的位置， 11 1295441 14513twf.doc/y 並可將第一與第二訊號記錄在記憶體（未繪示）中。 在本實施例中，外部光線22、24可以是周圍環境之光 源（例如是日光燈或太陽）所產生的光線，不同於習知技 術所使用的内部燈源，本發明不需加裝光源元件於殼體 中，且不需組裝光源元件於電路板上，因此相對減少電池 的耗電篁，且卽省組裝的成本。此外，為使光線能由外部 入射至殼體210中，透光視窗212的材質可以是透明玻璃、 塑膠、壓克力或其他透明材質、軟性材質，而透光視窗212 之形狀例如為矩形、圓形、長方形等類似形狀，其配置於 殼體210之一開口中，以使光線僅能由透光視窗212進來， 並經由透鏡226之聚光而投射在影像輸入單元220，以避免 雜光的干擾而造成誤判。當然，透光視窗212不限定為平 面形體，亦可是局部凸起或凹陷之形體，如圖2中所示之 附圖A及附圖B。 此外’影像輸入單元220例如具有一影像感測器222、 一控制電路224以及一透鏡226。此影像感測器222例如為 CMOS影像感測器，其具有多數個記憶胞（未繪示）或感 光二極體（photo-diode)，而影像遮蔽透光視窗212所產生 的對比訊號對應記錄於這些記憶胞上，並傳輸至控制電路 224，以產生第一訊號與該第二訊號。其中，第一與第二訊 號例如為“〇，，或“Γ位元訊號，或是由2位元、4位元或 8位元所表示之多個位元訊號，例如是，08HV10H，···等數位 訊號，並可藉由控制電路224所設定之臨界值（threshold)， 將每一記憶胞所接收的訊號轉化為“〇，，或“Γ位元訊 12 1295441 14513twf.doc/y 號’以利於判讀。此外，這些記憶胞例如排列成單一直線 或是排列成一面陣列。當影像遮蔽於部分記憶胞的上方 時，被遮蔽的記憶胞所接收的光量較少，因而產生一第一 訊號L例如是“〇，，位元訊號，而未被遮蔽的記憶胞所接收 的光量較多，因而產生一第二訊號，例如是“丨，，位元訊 號，並將所得到的訊號傳輸至訊號控制單元230。當然，上 述之第一訊號可設定為“i”位元訊號，而第二訊號可設定 為“〇”位元訊號。 另外，訊號控制單元230配置於殼體210中且電性耦 接影像輸入單元220,用以接收記憶胞所感應之第一與第二 訊號。在本實施例中，除了使用CM0S影像感測器來接收 外部光線的變化之外，還可利用感應元件所產生的感應訊 號來辨識手指的位置。請參考圖2B，其繪示本發明另一較 佳^施例之-種輸人裝置的剖面示意圖。其中，感應式輸 入單元320具有多個感應元件（未繪示），例如是電容式 感應器。在本實施例中，感應元件藉由感應手指30之指紋 上脈波通過時，波峰與波谷的電壓差來辨識手指3〇的位 置，、因此即使無外部/内部光源的情況下，輸入單元32〇仍 能感應手指30的位置而轉換成“〇”或“丨，，位元訊號，其 功效如同上述實施例所述。 接著，上述二實施例中，訊號控制單元23〇例如具有 一微處理器或數位訊號處理器之類的控制晶片，以得知影 像的動態位置，並可將輸入的數位化位元訊號記錄在一記 憶體42G (如圖4C所示）巾。此外，齡單元·位於殼 13 1295441 14513twf.doc/y 體210上且電性耦接訊號控制單元23〇，用以接收影像之移 動所產生的動態訊號，並可顯示一游標於相對的位置上。 請參考圖3A與圖3B，其分別繪示本發明一較佳實施 例之一種裝配在行動通訊裝置上之輸入裝置的示意圖。如 圖3A所示，當使用者以一手指3〇放置在殼體21〇上表面 之一透光視窗212上時，外部光線22被手指遮蔽的位置對 應產生一影像於透光視窗212上，且當手指30在透光視窗 212上移動一位移量時，顯示單元24〇對應於影像之移動路 徑相對產生一游標242,並可顯示游標242於相對位置上。 其中，顯示單元240例如是由一液晶驅動晶片所控制之液 晶顯不螢幕。此外，在圖3B中，透光視窗212亦可位於殼 體210之側邊而非上表面，且外部光線22被手指遮蔽 的位置對應產生一影像，並可顯示游標242於顯示單元 之相對位置上。 也就是說，當手指3〇之影像由透光視窗212之一第一 ，軚位置（Χ1，Υ1)開始移動時，訊號控制單元23〇對應於 心像之移動路徑而產生一第一座標位移量（ΑΧ)與一第二 座標位移量（ΔΥ)，並鱗計算影像驗置，喊顯示^ =^40上之一游標242由第一座標位置（χι，γι)移動至一 標位置（Χ1+ΛΧ,Υ1+ΔΥ)。詳細之操作流程請參 考圖4Α之說明。 請同時參考圖3Α及圖4Α，而圖4Α繪示本發明一較佳 、知例之種影像輸入的控制方法的流程圖。首先，在步 驟一 sl〇中，開啟電源，並接收外部光線22之訊號，以使 14 1295441 14513twf.doc/y 殼體210内之-影像輸入單元處於一閒置狀態，此時 ^ Υ=0，Σ ΔΧ=0，Σ ΔΥ^ (如步驟二S2G)。接著在步驟 二S30巾’當手指30遮蔽一部份外部光線24日夺，取 影像，並藉以判斷影像的位i，例如是第一隸位 (X1，Y1)。當影像開始由第一座標位置（Χ1，Υ1始 動時’藉由判斷第-座標位移量Δχ (如步驟四_) ^第 二座標位移量（如步驟五S50)來重新計算影像的位置了在 步驟四S40巾，當ΔΧ不等於〇時，更可進一步判斷若幻+ Σ ΔΧ-Xmax (如步驟六S60)，則保持游標的座標位置在 (Xmax，Υ1)上，若 χΐ+Σ △XgXmin (如步驟七 S7〇)， 則保持游標的座標位置在（Xmin，Υ1)上。此外，在步驟 五S50中，當ΔΥ不等於〇時，更可進一步判斷若 △ Y^Ymax(如步驟八S80)，則保持游標的座標位置在（χι， Ymax)上或移動游標的座標位置至（χι，γι+Σ 上，若Υ1+ΣΔΥ$Υιηίη (如步驟九S9〇)，則保持游標的 座標位置在（Xl，Ymin)上或移動游標的座標位置至（χι， Υ1+Σ ΔΥ+Ymin)上。 ^另外，在步驟十sl〇〇中，更可對應於游標所在的位置， 按壓或感應-開關，以產生—輸人訊號至訊號控制單元（如 步驟十一 S110)。如圖2Α及圖2Β所示，按壓開關或感應 開關25〇例如配置於透光視窗212或感應式輸入單元320 之而一使用者之手才旨30按壓透光視窗212或感應式輸 ^單το 320而對應接觸或感應此開關25〇,以產生輸入訊 旎，並-可啟用一顯示單元240上之圖案化使用者界面 15 1295441 14513twf.doc/y (GUI)。在本實施例中’透光視窗212可藉由彈簧或彈片 所支樓’並可產生類似按鍵或觸控板之功能，來接觸或感 ， 應此開關250之訊號，使用上更為方便且實用。 請參考圖4B，其繪示本發明另一較佳實施例之一種影 ’ 像輸入的控制方法的流程圖。與上述實施例不同的是，在 取得一影像之前，更包括一校正步驟S22，例如校正外部光 線入射至殼體中的明暗度’以使本發明之輸入裝置即使在 微光下仍能辨識手指的影像，以避免誤判。此外，在校正 步驟S22之後，更可包括設定一臨界值之步驟S24。也就是 馨 說，當影像感應器之記憶胞所接收的光訊號小於臨界值 時，則以第一訊號表示“暗”，反之，所接收的光訊號高 於一臨界值時’則以第二訊號表示“亮”。因此，在後續 取得一影像（步驟S30)之後，即可將影像訊號轉換成一第 一訊號以及一第二訊號（步驟S32)，而第一訊號用來辨識 影像的位置。 請參考圖4C，其繪示本發明之影像訊號藉由類比/數位 轉換器轉換成數位訊號的示意圖。其中，影像感測器4〇〇 φ 取得一影像之後，經由一類比/數位轉換器410將類比訊號 轉換成數位訊號，並對應記錄於每一記憶體420中，例 如，〇811，，，1〇11，...等，接著再由控制電路（未繪示）所設定 之臨界值（threshold)，將每一記憶胞42()所接收的訊號轉 化為“0”或“1”位元訊號，以利於判讀。 · 請參考圖5A〜圖5E，其繪示本發明之輸入裝置所輸出 · 之影像感測訊號的示意圖。如圖5A所示，在閒置狀態下， 16 1295441 14513twf.doc/y 衫像感測gf 222所感應的訊號均相同，例如以‘‘ 1，，位元％ 號表示。接著，如圖5B所示，當手指遮蔽部分外部光線時， 影像感測器222對應產生不同訊號，例如以“〇，，位元訊號 表示，並可辨識手指之影像的位置。接著，如圖5〇：所°示〜 當影像往上機-⑽量（λυμ)時，重新計抑像的 位置’並相對移動游標顯示於一螢幕上。同樣，如圓5 D所 不，當影像再往上移動一位移量（△γ=+2)時，重新 影像的位置’並相對移麟標於—歸上，直到影 : (△χ=ο)，如圖5Ε戶斤示。同樣地，當影像往下“二 其順序恰好相反，由圖5D回到圖5Α，在此不再重述。 請參考圖6Α〜圖6Ε，其繪示本發明之輪 张 之影像感測訊號的示意圖。如圖从所 3所輸出 影像感測器222所感應的訊號均相同，例如以月 怨下’ 接著’如_所示，#手指遮蔽部分外部光t訊 衫像感測态222對應產生不同訊號，例如以:寸 表示，並可辨識手指之影像的位置。 =疋訊號 當影像往左移動-位移量（Δχ=+2)時 所示， 位置，並相對移動游標顯示於一螢幕上。样叶异影像的 不，當影像再往左移動一位移量（Δχ=+3σ '如圖6D所 影像的位置，並相對移動游標於一螢 J重新计异 (△_，如圖6Ε所示。同樣地 像停止 其順序恰好相反，由圖6D回到圖6A，j在右移動時， 然本發明以單—軸向的位移（ 不再重述。雖 可知，向之位移但同理 17 1295441 14513twf.doc/y ^上所述，本發明之輸入裝置及影像輸入之控 電子裝置上，且特別是一種可攜帶式電子梦 例如疋行動電話、個人數位化助理（PDA)或全球定^ 接收器。由於本發明之輸入裝置丄= 件於，：節省電池的耗電量’且不需組裝光源元 加裝光源元件更可㈣财度薄純，岐好 輕巧、美觀。 罝更為 π定已以較佳實施例揭露如上，然其並非用以 限=本㈣’任何熟習此技㈣，在不麟本發明之 1口靶圍内當可作些許之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 # 會示美國專利公告第6,677,929號之一種輸入裝置 的不思圖。 圖2A及圖2B分麟示本發明二 裝置的剖面示意圖。 貝關裡翰入 圖3A與@ 3B分別㈣本發明_較佳實關之 配在行動通訊裝置上之輸入裝置的示意圖。、 衣 圖4A及圖4B分別缘示本發明二較 像輸入的控制方法的流程圖。 貝犯裡〜 圖4C繪示本發明之影像訊號蕤山 換成數位訊號的示意圖。7虎错由頰比/數位轉換器轉 圖5A〜圖贿示本發明之輪入裳置所輪出之影像感測訊 18 1295441 14513twf.doc/y 號的示意圖。 圖6A〜圖6E繪示本發明之輸入裝置所輸出之影像感測訊 號的示意圖。 【主要元件符號說明】 3 :手指 7 :殼體 8 :輸入裝置 9 :光源 10 :影像轉換器 20 :透鏡 22、24 :外部光線 30 :手指 200 :輸入裝置 210 :殼體 212 :透光視窗 220 :影像輸入單元 222 :影像感測器 224 :控制電路 226 :透鏡 230 :訊號控制單元 240 :顯示單元 242 ··游標 250 :開關 320 :輸入單元 1295441 14513twf.doc/y 400 :影像感測器 410 :類比/數位轉換器 420 :記憶體 20A 14513twf.doc/y The first standard displacement (ΔΥ); Finally, recalculate the position of the finger so that one of the cursors on the screen moves from the first coordinate position (X1, Y1) to a second coordinate position (Χ1 +ΔΧ, Υ1+ΔΥ). According to a preferred embodiment of the present invention, in the step of recalculating the position of the image, when ΔΧ is not equal to 〇, and equal to ^=Xl+Σ AX^Xmax, the coordinate position of the cursor can be maintained at Υ1. )on. In addition, when ΔΧ is not equal to 〇, and Δ Υ is equal to 〇, and Σ ΔΧ^Χιηίη, the coordinate position of the cursor can be maintained at (χι^η, γ. , ^ according to the preferred embodiment of the present invention, In the above step of re-image position, when it is equal to 〇, and Δγ is not equal to: ΔΥ, Ymax, 'keep the coordinates of the cursor at (χι: 或 or move the coordinates of the cursor to (XI γΐ $, ♦ Eight X cages are on η 1 Λ, J λΔΥ_γη^χ). This 田田Χ is specialized for 〇, and Δγ is not equal to 〇, and γι + keeps the coordinates of the cursor at (χι, γηώ) ^ = coordinates Position to (χι,Υΐ+ΣΔΥ+Υηιίη) on the mobile phase _ should produce a first signal in the scene; through the light; see the window: position to the position of the image. Material, #f彡 image surface, hunting to identify When the display unit corresponds to the displacement of the movement path of the image, the power consumption of the pool, and the external light can save 70 pieces of electricity on the circuit board, thereby saving the cost of assembly of 1295441 14513 twf.doc/y. The above and other objects, features and advantages of the present invention will become more apparent. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] Referring now to Figure 2A, a cross-sectional view of a wheel entry device in accordance with a preferred embodiment of the present invention is shown. It can be applied to an electronic device, and in particular to a portable electronic device, such as a mobile phone, a personal digital assistant (PDA) or a global positioning system (GPS) receiver. The input device 200 mainly includes a housing 21 The image input unit 22, a signal control unit 230, and a display unit 240. The housing 210 has a light transmission view = 212, which is located, for example, on the upper surface of the housing 21 to allow an external light 22 to pass through. The light transmissive window 212 is incident on the housing 21 . In addition, the image input unit 220 is disposed in the housing 210 and located below the light transmission window 212 for receiving external light 22 and can know the position of an image. The image is generated, for example, by the user's finger 3G, and the portion of the person is incident on the external light 24 in the housing 210. Therefore, when the image obscures a part of the surface of the light-transmitting window 212, the image is imaged. The position of the light-shielding window 212 corresponding to the light-generating signal is generated in the image input unit 22(), and the position on the remaining light-transmissive window 212 is also opposite to the other light signal, thereby identifying the image. That is, the external light 22 received by the image input unit 220 is not the amount of human light, so that the image input unit 220 generates an image signal correspondingly, and can convert the image signal into a first signal-re The second signal, and the first signal is used to identify the position of the image, 11 1295441 14513twf.doc/y and the first and second signals can be recorded in a memory (not shown). In this embodiment, the external light rays 22, 24 may be light generated by a light source of the surrounding environment (for example, a fluorescent lamp or the sun). Unlike the internal light source used in the prior art, the present invention does not need to install a light source component. In the housing, and without assembling the light source component on the circuit board, the power consumption of the battery is relatively reduced, and the cost of assembly is saved. In addition, in order to allow light to be incident on the housing 210 from the outside, the material of the transparent window 212 may be transparent glass, plastic, acrylic or other transparent material, soft material, and the shape of the transparent window 212 is, for example, a rectangle. A circular, rectangular, or the like is disposed in one of the openings of the housing 210 such that the light can only enter through the light transmission window 212 and is projected by the lens 226 to the image input unit 220 to avoid stray light. The interference caused a misjudgment. Of course, the light transmission window 212 is not limited to a flat shape, and may be a partially convex or concave shape, as shown in FIG. 2 and FIG. Further, the image input unit 220 has, for example, an image sensor 222, a control circuit 224, and a lens 226. The image sensor 222 is, for example, a CMOS image sensor having a plurality of memory cells (not shown) or a photo-diode, and the image masking the contrast signal generated by the light-transmissive window 212 The memory cells are transmitted to the control circuit 224 to generate a first signal and the second signal. The first and second signals are, for example, “〇,, or “Γ bit signals, or a plurality of bit signals represented by 2-bit, 4-bit or 8-bit, for example, 08HV10H, ··Equivalent digital signal, and the signal received by each memory cell can be converted into “〇,, or “Γ元讯12 1295441 14513twf.doc/y by the threshold set by the control circuit 224. No. ' to facilitate interpretation. Further, these memory cells are arranged, for example, in a single straight line or in an array of one side. When the image is shielded above a portion of the memory cell, the shaded memory cell receives less light, thereby generating a first signal L such as a "〇, a bit signal, which is received by the unmasked memory cell. The amount of light is large, thereby generating a second signal, such as "丨," bit signal, and transmitting the obtained signal to the signal control unit 230. Of course, the first signal can be set to the "i" bit signal, and the second signal can be set to the "〇" bit signal. In addition, the signal control unit 230 is disposed in the housing 210 and electrically coupled to the image input unit 220 for receiving the first and second signals sensed by the memory cells. In this embodiment, in addition to using the CMOS image sensor to receive changes in external light, the sensing signal generated by the sensing element can be used to identify the position of the finger. Referring to Figure 2B, a cross-sectional view of another preferred embodiment of the present invention is shown. The inductive input unit 320 has a plurality of sensing elements (not shown), such as a capacitive sensor. In the present embodiment, the sensing element recognizes the position of the finger 3〇 by sensing the voltage difference between the peak and the valley when the pulse wave on the fingerprint of the finger 30 is passed, so even if there is no external/internal light source, the input unit 32 The 〇 can still sense the position of the finger 30 and convert it into a “〇” or “丨,” bit signal, the function of which is as described in the above embodiment. Next, in the above two embodiments, the signal control unit 23 has, for example, a micro processing. A control chip such as a digital signal processor or the like, to know the dynamic position of the image, and to record the input digitized bit signal in a memory 42G (as shown in FIG. 4C). It is located on the shell 13 1295441 14513twf.doc/y body 210 and is electrically coupled to the signal control unit 23A for receiving the dynamic signal generated by the movement of the image and displaying a cursor at the opposite position. Please refer to FIG. 3A. FIG. 3B is a schematic diagram of an input device mounted on a mobile communication device according to a preferred embodiment of the present invention. As shown in FIG. 3A, when a user places a finger in a housing 21〇. When one of the surfaces is transmitted through the window 212, the position where the external light 22 is blocked by the finger corresponds to an image on the light transmission window 212, and when the finger 30 moves by a displacement amount on the light transmission window 212, the display unit 24 corresponds to A cursor 242 is generated relative to the moving path of the image, and the cursor 242 is displayed at a relative position. The display unit 240 is, for example, a liquid crystal display screen controlled by a liquid crystal driving chip. Further, in FIG. 3B, the light is transmitted. The window 212 can also be located on the side of the housing 210 instead of the upper surface, and the position where the external light 22 is blocked by the finger corresponds to generate an image, and the cursor 242 can be displayed at the relative position of the display unit. When the image of the cymbal is moved by the first position of the light-transmitting window 212 and the 軚 position (Χ1, Υ1) starts, the signal control unit 23 generates a first coordinate displacement amount (ΑΧ) and a second corresponding to the moving path of the heart image. The coordinate displacement (ΔΥ), and the scale calculation image verification, shouts that one of the cursors 242 on the ^^^40 is moved from the first coordinate position (χι, γι) to a target position (Χ1+ΛΧ, Υ1+ΔΥ). Detailed Please refer to FIG. 4A and FIG. 4B together, and FIG. 4B is a flow chart showing a method for controlling image input according to a preferred embodiment of the present invention. First, in step 1 sls Turning on the power and receiving the signal of the external light 22, so that the image input unit in the casing 12 is in an idle state, at this time ^ Υ = 0, Χ Δ Χ = 0, Σ Δ Υ ^ (Step 2: S2G) Then, in step 2, S30, when the finger 30 shields a portion of the external light for 24 days, the image is taken, and the bit i of the image is judged, for example, the first position (X1, Y1). When the image begins to be moved from the first coordinate position (Χ1,Υ1), the position of the image is recalculated by judging the first coordinate displacement Δχ (as in step _) ^ the second coordinate displacement (as in step S50). Step 4 S40 towel, when ΔΧ is not equal to 〇, it can be further judged if illusion + Σ ΔΧ-Xmax (as in step 6 S60), then the coordinate position of the cursor is kept at (Xmax, Υ1), if χΐ+Σ △XgXmin (If step 7 S7〇), keep the coordinate position of the cursor on (Xmin, Υ1). In addition, in step S50, when ΔΥ is not equal to 〇, it can be further judged if △ Y^Ymax (such as step eight) S80), keep the coordinate position of the cursor on (χι, Ymax) or move the coordinates of the cursor to (χι, γι+Σ, if Υ1+ΣΔΥ$Υιηίη (as in step 9 S9〇), keep the coordinates of the cursor Position on (Xl, Ymin) or move the coordinate position of the cursor to (χι, Υ1+Σ ΔΥ+Ymin). ^ In addition, in step ten sl〇〇, it can correspond to the position of the cursor, press or sense - switch to generate - input signal to signal control unit (eg step 11 S 110) As shown in FIG. 2A and FIG. 2B, the push switch or the inductive switch 25 is disposed, for example, in the light transmission window 212 or the inductive input unit 320, and a user's hand is 30 to press the light transmission window 212 or inductive The input unit το 320 correspondingly contacts or senses the switch 25 〇 to generate an input signal, and can enable a patterned user interface 15 1295441 14513 twf.doc/y (GUI) on a display unit 240. In this implementation In the example, the light-transmitting window 212 can be touched or sensed by a function of a button or a touchpad by a spring or a shrapnel. The signal of the switch 250 is more convenient and practical to use. Referring to FIG. 4B, a flow chart of a method for controlling image input is shown in another preferred embodiment of the present invention. In addition to the above embodiment, before an image is acquired, a correction step S22 is further included, for example. Correcting the brightness of the external light incident into the housing to enable the input device of the present invention to recognize the image of the finger even under low light to avoid false positives. Further, after the correcting step S22, a threshold may be further set. Step S24. That is to say, when the optical signal received by the image sensor's memory cell is less than the critical value, the first signal indicates "dark", and vice versa, when the received optical signal is higher than a critical value, The second signal indicates “bright.” Therefore, after acquiring an image (step S30), the image signal can be converted into a first signal and a second signal (step S32), and the first signal is used to identify the image. Please refer to FIG. 4C, which is a schematic diagram of the image signal of the present invention converted into a digital signal by an analog/digital converter. After the image sensor 4〇〇φ obtains an image, the analog signal is converted into a digital signal by an analog/digital converter 410, and correspondingly recorded in each memory 420, for example, 〇811,,,1 〇11,...etc., and then the threshold value (threshold) set by the control circuit (not shown) converts the signal received by each memory cell 42() into a "0" or "1" bit. Signal to facilitate interpretation. Please refer to FIG. 5A to FIG. 5E, which are schematic diagrams showing image sensing signals output by the input device of the present invention. As shown in FIG. 5A, in the idle state, the signal sensed by the 16 1295441 14513 twf.doc/y shirt sensing gf 222 is the same, for example, represented by ‘‘ 1, the bit %. Then, as shown in FIG. 5B, when the finger shields part of the external light, the image sensor 222 generates different signals, for example, “〇,, the bit signal, and can recognize the position of the image of the finger. Then, as shown in the figure. 5〇:°°～ When the image goes up to the machine-(10) quantity (λυμ), the position of the image is re-stated and the cursor is displayed on a screen. Similarly, if the circle 5 D does not, when the image goes further When moving a displacement amount (△γ=+2), the position of the image is re-imaged and moved to the same position, until the shadow: (△χ=ο), as shown in Figure 5. The image goes down "two orders are exactly the opposite, from Figure 5D back to Figure 5, and will not be repeated here. Please refer to FIG. 6A to FIG. 6A, which are schematic diagrams showing image sensing signals of the wheel of the present invention. As shown in the figure, the signals sensed by the output image sensor 222 are the same, for example, the monthly slaps are followed by 'next' as indicated by _, and the # finger-shielded portion of the external light t-shirt image sensing state 222 correspondingly generates different signals. , for example, in inches, and can identify the position of the image of the finger. =疋 signal When the image moves to the left - the amount of displacement (Δχ = +2) is shown, the position, and the relative movement of the cursor is displayed on a screen. If the image is different from the image, the image is moved to the left by a displacement amount (Δχ=+3σ' as shown in Fig. 6D, and the cursor is re-counted relative to the moving cursor (△_, as shown in Fig. 6Ε) Similarly, the order of stopping is exactly the opposite, from FIG. 6D back to FIG. 6A, when j is moving to the right, the present invention has a single-axial displacement (not repeated again. Although it can be seen that it is displaced but the same 17 1295441 14513twf.doc/y ^, the input device and the image input control device of the present invention, and particularly a portable electronic dream such as a mobile phone, a personal digital assistant (PDA) or a global setting ^ Receiver. Because the input device of the present invention is:, saves the power consumption of the battery, and does not need to assemble the light source element to install the light source component. (4) The financial property is thin and pure, and the light weight is beautiful and beautiful. The above has been disclosed in the preferred embodiment, but it is not limited to the use of this technique. (4) It is not familiar with this technique (4), and some modifications and retouchings can be made in the target range of the invention. The scope of protection shall be subject to the definition of the scope of the patent application attached. [Simplified illustration of the drawing] # Intuition of an input device of US Patent Publication No. 6,677,929. Figure 2A and Figure 2B show a schematic cross-sectional view of the second device of the present invention. 3B respectively (d) a schematic diagram of the input device of the present invention _ preferably implemented in a mobile communication device. Fig. 4A and Fig. 4B respectively show a flow chart of a control method for the second image input of the present invention. 4C is a schematic diagram of the image signal of the present invention replaced by a digital signal. 7 Tiger's error is changed from the cheek ratio/digital converter to FIG. 5A to the bribe showing the image sensing signal of the wheel of the present invention. 18 1295441 14513 twf.doc / y. Figure 6A ~ 6E is a schematic diagram of the image sensing signal output by the input device of the present invention. [Main component symbol description] 3: Finger 7: Housing 8: Input device 9: light source 10: image converter 20: lens 22, 24: external light 30: finger 200: input device 210: housing 212: light transmission window 220: image input unit 222: image sensor 224: control circuit 226: Lens 230: signal control unit 240 : Display unit 242 · · Cursor 250 : Switch 320 : Input unit 1295441 14513twf.doc / y 400 : Image sensor 410 : Analog / digital converter 420 : Memory 20