TWI786682B

TWI786682B - Optical mouse and its control method

Info

Publication number: TWI786682B
Application number: TW110121768A
Authority: TW
Inventors: 洪澤倫; 卓志宏; 黃榮壽
Original assignee: 義隆電子股份有限公司
Priority date: 2021-04-22
Filing date: 2021-06-15
Publication date: 2022-12-11
Also published as: TW202242617A

Abstract

The present invention relates to an optical mouse and its control method. When the optical mouse operates on the working surface, the optical mouse controls the transmission and reception of the optical signals at a first frame rate. When the optical mouse is lifted away from the work surface, the optical mouse controls the transmission and reception of the optical signals at a second frame rate. The second frame rate is larger than the first frame rate. Then the optical mouse is switched to the higher frame rate to control the transmission and reception of optical signals when the optical mouse is lifted. Thus, more reflection images are obtained relatively, the optical mouse has more information to quickly determine abnormal reflection images. Then the reporting of the abnormal reflection images are prevented to avoid reflecting the abnormal movement track.

Description

光學滑鼠及其控制方法Optical mouse and its control method

本發明係關於一種光學滑鼠，尤指與控制光學滑鼠之發光頻率有關之技術。 The invention relates to an optical mouse, especially the technology related to controlling the light-emitting frequency of the optical mouse.

光學滑鼠為常見搭配電子裝置使用之輸入裝置，當光學滑鼠使用時，係置於工作表面上移動，光學滑鼠之內部光源所發射的光線照射到工作表面之對應位置，光線相對於該對應位置所產生之反射光係反射進入光學滑鼠，再由光學滑鼠內部之感測單元擷取對應位置的影像，透過分析影像來判斷光學滑鼠的移動路徑，以對應控制電子裝置所顯示之游標位置。 The optical mouse is a common input device used with electronic devices. When the optical mouse is used, it is placed on the work surface and moved. The light emitted by the internal light source of the optical mouse hits the corresponding position on the work surface. The reflected light generated by the corresponding position is reflected into the optical mouse, and then the sensing unit inside the optical mouse captures the image of the corresponding position, and the moving path of the optical mouse is judged by analyzing the image, so as to control the display of the electronic device accordingly The cursor position.

當使用者在移動過程中抬起光學滑鼠而使其底面未貼附於工作表面時(例如使用時略為抬起離開工作表面或移動至工作表面之邊緣外)，光源所發射的光線將隨著光學滑鼠被抬起的角度發散無法聚焦於一處，而非聚焦照射到工作表面上對應於光學滑鼠之處，此時感測單元受限於其角度及對應位置限制，所擷取到的影像模糊或亮度下降，容易導致電子裝置瞬間誤判該光學滑鼠的移動路徑，因此，如何在光學滑鼠改變與工作表面之間的關係時，有效反應而提高判斷移動路徑的準確度，成為現有技術所需解決的問題。 When the user lifts the optical mouse while moving so that the bottom surface is not attached to the work surface (for example, slightly lifted away from the work surface or moved outside the edge of the work surface during use), the light emitted by the light source will follow When the optical mouse is raised, the angle diverges and cannot be focused on one place, and the unfocused light is irradiated on the work surface corresponding to the optical mouse. At this time, the sensing unit is limited by its angle and corresponding position, and the captured The blurred or decreased brightness of the image may easily cause the electronic device to misjudge the movement path of the optical mouse in an instant. Therefore, how to respond effectively to improve the accuracy of judging the movement path when the relationship between the optical mouse and the work surface changes, Become the problem that prior art needs to solve.

有鑑於此，本發明係針對光學滑鼠在抬起狀態改變時，改變控制方式以提高判斷光學滑鼠之移動路徑的準確度。 In view of this, the present invention aims at changing the control mode when the lifting state of the optical mouse changes, so as to improve the accuracy of judging the moving path of the optical mouse.

為達到上述之發明目的，本發明係提供一種光學滑鼠的控制方法，其包括以下步驟：當該光學滑鼠於一工作表面上操作時，以一第一幀率控制光訊號的發射及接收；當該光學滑鼠離開該工作表面時，以一第二幀率控制光訊號的發射及接收，其中該第二幀率大於該第一幀率；當該光學滑鼠以該第二幀率控制光訊號的發射及接收時，判斷該光學滑鼠是否回到該工作表面，若是，則該光學滑鼠延遲一特定時間後再將切換回該第一幀率控制光訊號的發射及接收，在該段延遲的特定時間內，仍維持以該第二幀率控制光訊號的發射及接收。 In order to achieve the above-mentioned purpose of the invention, the present invention provides a control method of an optical mouse, which includes the following steps: when the optical mouse is operated on a work surface, controlling the emission and reception of optical signals at a first frame rate ; when the optical mouse leaves the work surface, control the emission and reception of light signals at a second frame rate, wherein the second frame rate is greater than the first frame rate; when the optical mouse is at the second frame rate When controlling the emission and reception of optical signals, it is judged whether the optical mouse returns to the work surface, and if so, the optical mouse will switch back to the first frame rate to control the emission and reception of optical signals after a certain time delay. During the specific delay period, the second frame rate is still used to control the transmission and reception of the optical signal.

本發明亦提供執行前述控制方法之一種光學滑鼠，其包括：一殼體；一光源，其設置於該殼體中並朝該殼體外提供光訊號；一感測單元，其設置於該殼體中並接收所述光訊號之反射光訊號；一控制單元，其設置於該殼體中，該控制單元控制該光源提供該光訊號，其中該控制單元控制該光源執行前述之控制方法。 The present invention also provides an optical mouse for implementing the aforementioned control method, which includes: a casing; a light source, which is arranged in the casing and provides light signals to the outside of the casing; a sensing unit, which is arranged in the casing A reflected light signal in the body and receiving the light signal; a control unit, which is arranged in the casing, and the control unit controls the light source to provide the light signal, wherein the control unit controls the light source to execute the aforementioned control method.

本發明的優點在於，藉由提高光學滑鼠離開工作表面時所控制光訊號的幀率，使得光學滑鼠在離開工作表面時，能增加所擷取的影像張數，而使得控制單元能快速判斷出不正常影像，而能迅速阻擋回報出非使用者所預期之位移，以改善使用者體驗。 The advantage of the present invention is that by increasing the frame rate of the optical signal controlled when the optical mouse leaves the work surface, the number of captured images can be increased when the optical mouse leaves the work surface, so that the control unit can quickly By judging abnormal images, it is possible to quickly block and report displacements that are not expected by the user, so as to improve user experience.

1:光學滑鼠 1: Optical mouse

10:殼體 10: Shell

20:光源 20: light source

21:光線 21: light

30:控制單元 30: Control unit

40:感測單元 40: Sensing unit

50:工作表面 50: work surface

T:發光週期 T: light cycle

S₁₁、S₁₂:第一光訊號 S ₁₁ , S ₁₂ : the first light signal

S₂₁、S₂₂:第二光訊號 S ₂₁ , S ₂₂ : the second light signal

t₁₁、t₁₂:第一時間 t ₁₁ , t ₁₂ : the first time

t₂₁、t₂₂:第二時間 t ₂₁ , t ₂₂ : second time

Φ₁₁、Φ₁₂:第一光通量 Φ ₁₁ , Φ ₁₂ : the first luminous flux

Φ₂₁、Φ₂₂:第二光通量 Φ ₂₁ , Φ ₂₂ : Second luminous flux

I₁₁、I₁₂:第一反射圖像 I ₁₁ , I ₁₂ : first reflection image

I₂₁、I₂₂:第二反射圖像 I ₂₁ , I ₂₂ : second reflected image

圖1為本發明之光學滑鼠在未抬起狀態的側視剖面示意圖；圖2為本發明之光學滑鼠的部份元件方塊圖；圖3為本發明之光學滑鼠操作時的實施狀態示意圖；圖4為本發明之光學滑鼠在工作表面時之發光時序圖；圖5為本發明之光學滑鼠在抬起時之發光時序圖；圖6為本發明之判斷光學滑鼠是否抬起之第一實施例的發光時序圖；圖7為本發明之判斷光學滑鼠是否抬起之第二實施例的發光時序圖；圖8為本發明之判斷光學滑鼠是否抬起之第三實施例的發光時序圖；圖9為本發明之判斷光學滑鼠是否抬起之第四實施例的發光時序圖；圖10為本發明之光學滑鼠在未抬起狀態下之其中一實施態樣的發光時序及反射圖像對照示意圖；圖11為本發明之光學滑鼠在抬起狀態的側視剖面示意圖；圖12為本發明之光學滑鼠在抬起狀態下之其中一實施態樣的發光時序及反射圖像對照示意圖；圖13至圖16為本發明所擷取之反射圖像的各像素照度示意圖。 Fig. 1 is a schematic side view sectional view of the optical mouse of the present invention in a non-lifted state; Fig. 2 is a block diagram of some components of the optical mouse of the present invention; Fig. 3 is an implementation state of the optical mouse of the present invention during operation Schematic diagram; Fig. 4 is the timing diagram of light emission when the optical mouse of the present invention is on the working surface; Fig. 5 is the timing diagram of light emission when the optical mouse of the present invention is lifted; Fig. 6 is the judging whether the optical mouse is lifted of the present invention The luminescence timing diagram of the first embodiment; Fig. 7 is the luminescence timing diagram of the second embodiment of judging whether the optical mouse is lifted; Fig. 8 is the third judging whether the optical mouse is lifted of the present invention The light-emitting sequence diagram of the embodiment; FIG. 9 is the light-emitting sequence diagram of the fourth embodiment of judging whether the optical mouse is lifted; FIG. 10 is one of the implementation states of the optical mouse in the non-lifted state of the present invention Figure 11 is a schematic diagram of a side view of the optical mouse of the present invention in a lifted state; Figure 12 is an implementation of the optical mouse of the present invention in a lifted state Figure 13 to Figure 16 are schematic diagrams of the illuminance of each pixel of the reflected image captured by the present invention.

以下配合圖式及本發明之實施例，進一步闡述本發明為達成預定發明目的所採取的技術手段，其中圖式僅為了說明目的而已被簡化，並通過描述本發明的元件和組件之間的關係來說明本發明的結構或方法發明，因此，圖中所示的元件不以實際數量、實際形狀、實際尺寸以及實際比例呈現，尺寸或尺寸比例已被放大或簡化，藉此提供更好的說明，已選擇性地設計和配置實際數量、實際形狀或實際尺寸比例，而詳細的元件佈局可能更複雜。 The technical means adopted by the present invention to achieve the intended purpose of the invention are further elaborated below in conjunction with the drawings and embodiments of the present invention, wherein the drawings are simplified for illustrative purposes only, and by describing the relationship between elements and components of the present invention To illustrate the structure or method invention of the present invention, therefore, the elements shown in the drawings are not presented in actual number, actual shape, actual size and actual ratio, and the size Or the size ratio has been enlarged or simplified to provide better illustration, the actual number, actual shape or actual size ratio has been selectively designed and configured, and the detailed component layout may be more complicated.

請參閱圖1及圖2所示，本發明之光學滑鼠1包含有一殼體10、一光源20、一控制單元30及一感測單元40。該光源20、該控制單元30及該感測單元40均設置於該殼體10中，該光源20及該感測單元40電連接於該控制單元30，該光源20所發射之光線21朝向該殼體10外，亦即該光源20朝該殼體10外提供光訊號，當光線21照射到該殼體10之底面所置放的工作表面50後，反射光由該感測單元40接收，進而產生對應的反射圖像，藉由該反射圖像判斷該光學滑鼠1之移動行程。 Please refer to FIG. 1 and FIG. 2 , the optical mouse 1 of the present invention includes a casing 10 , a light source 20 , a control unit 30 and a sensing unit 40 . The light source 20, the control unit 30 and the sensing unit 40 are all arranged in the housing 10, the light source 20 and the sensing unit 40 are electrically connected to the control unit 30, and the light 21 emitted by the light source 20 is directed toward the Outside the casing 10, that is, the light source 20 provides light signals to the outside of the casing 10. When the light 21 hits the working surface 50 placed on the bottom surface of the casing 10, the reflected light is received by the sensing unit 40, And then generate a corresponding reflection image, and judge the moving distance of the optical mouse 1 by the reflection image.

請參閱圖3所示，當該光學滑鼠1操作時，將因為使用者的動作而使得該光學滑鼠1在一工作表面50操作或離開該工作表面50。請配合參閱圖2、圖4及圖5所示，當該光學滑鼠1於該工作表面50上操作時，該控制單元30以一第一幀率來控制光訊號的發射及接收(如圖4所示)；同時該控制單元30依據該感測單元40所接收之前述反射圖像持續判斷該光學滑鼠1是否離開該工作表面50，若判斷該光學滑鼠1離開該工作表面50，則該控制單元30改以一第二幀率來控制光訊號的發射及接收(如圖5所示)，其中該第二幀率大於該第一幀率，意即該光學滑鼠1在離開該工作表面50時，以較高的幀率來控制光訊號，則相對來說該感測單元40也會接收到較多的前述反射圖像。以圖4及圖5來比較，在相同的時間長度A中，以該第一幀率(圖4)發射光訊號來說僅發射一次光訊號而僅獲得一張前述反射圖像，但以該第二幀率(圖5)發射光訊號來說，則發射三次光訊號而可獲得三張前述反射圖像。如此一來，將使得該控制單元30有更多的資訊，能在較短的時間內判斷出所接收到的前述反射圖像為不正常圖像，而阻擋回報，以避免該光學滑鼠1所對應呈現的軌跡包含抬起時所接收到的前述反射圖像。 Please refer to FIG. 3 , when the optical mouse 1 is in operation, the optical mouse 1 will operate on or leave the work surface 50 due to the actions of the user. Please refer to FIG. 2, FIG. 4 and FIG. 5. When the optical mouse 1 is operated on the work surface 50, the control unit 30 controls the transmission and reception of optical signals at a first frame rate (as shown in FIG. 4); at the same time, the control unit 30 continues to judge whether the optical mouse 1 leaves the work surface 50 according to the aforementioned reflected image received by the sensing unit 40, if it is judged that the optical mouse 1 leaves the work surface 50, Then the control unit 30 changes to a second frame rate to control the transmission and reception of optical signals (as shown in FIG. 5 ), wherein the second frame rate is greater than the first frame rate, which means that the optical mouse 1 is leaving When the working surface 50 is used to control the light signal at a higher frame rate, relatively speaking, the sensing unit 40 will also receive more of the aforementioned reflected images. Comparing with Fig. 4 and Fig. 5, in the same time length A, the light signal is emitted only once with the first frame rate (Fig. 4) and only one reflection image is obtained, but the For the second frame rate (FIG. 5) for emitting light signals, the light signals are emitted three times to obtain the three reflection images mentioned above. In this way, the control unit 30 will have more information, and can judge that the received reflection image is incorrect in a short period of time. The normal image is blocked, so as to avoid that the trajectory corresponding to the optical mouse 1 includes the aforementioned reflected image received when the optical mouse 1 is lifted.

在一實施例中，當該光學滑鼠1離開該工作表面50時，進一步判斷該光學滑鼠是否回到該工作表面50，若是，則該控制單元30延遲一特定時間後再切換回該第一幀率控制光訊號的發射及接收，在該段延遲的特定時間內，仍維持以該第二幀率控制光訊號的發射及接收。如前所述，在該光學滑鼠1抬起狀態下以較高的幀率來獲得較多反射圖像，有助於阻擋不正常使用狀況的回報，因此在該光學滑鼠1剛由抬起狀態而回到該工作表面50時，仍維持一小段時間的高幀率也有助於在狀態切換下所獲取的反射圖像數量，以便該控制單元30在抬起和回到該工作表面50的狀態轉換下，能夠有較多的前述反射圖像來輔助判斷。 In one embodiment, when the optical mouse 1 leaves the work surface 50, it is further judged whether the optical mouse returns to the work surface 50, and if so, the control unit 30 delays a certain time before switching back to the first work surface. A frame rate is used to control the emission and reception of the optical signal, and the second frame rate is still used to control the emission and reception of the optical signal within the specified delay time. As mentioned above, when the optical mouse 1 is lifted, more reflection images can be obtained with a higher frame rate, which helps to prevent the return of abnormal use conditions, so when the optical mouse 1 is just lifted When returning to the work surface 50 from the state, the high frame rate still maintained for a short period of time also contributes to the number of reflection images acquired under the state switching, so that the control unit 30 is lifted and returned to the work surface 50 Under the state transition of , there can be more aforementioned reflected images to assist the judgment.

在一實施例中，當該光學滑鼠1在該工作表面50上操作時，該控制單元30進一步判斷該光學滑鼠1是否具有位移，若判斷該光學滑鼠1在該工作表面50上具有位移或在一預設時間內位移大於一門檻植，則該控制單元30維持以該第一幀率控制光訊號的發射及接收，若判斷該光學滑鼠1係靜止在該工作表面50上或在該預設時間內位移小於一門檻值，則該控制單元30改以一第三幀率控制光訊號的發射及接收，其中該第三幀率小於該第一幀率，使得該光學滑鼠1在靜止或趨近於靜止的狀態下，基於判斷移動軌跡的需求量較低，故以較小的幀率來控制光訊號的發射及接收，來節省該光學滑鼠1在此狀態下的能耗。 In one embodiment, when the optical mouse 1 is operated on the work surface 50, the control unit 30 further determines whether the optical mouse 1 has a displacement, if it is determined that the optical mouse 1 has a displacement on the work surface 50 Displacement or displacement within a preset time is greater than a threshold, then the control unit 30 maintains the first frame rate to control the transmission and reception of optical signals, if it is judged that the optical mouse 1 is still on the work surface 50 or If the displacement is less than a threshold within the preset time, the control unit 30 controls the transmission and reception of optical signals at a third frame rate, wherein the third frame rate is lower than the first frame rate, so that the optical mouse 1. In a static or near-static state, based on the low demand for judging the movement track, a smaller frame rate is used to control the emission and reception of optical signals to save the optical mouse 1 in this state. energy consumption.

在一實施例中，該第一幀率係選自一第一範圍，該第二幀率係選自一第二範圍，該第三幀率係選自一第三範圍。在一實施例中，該第一範圍為9600Hz~15000Hz，該第二範圍係為14000Hz~25000Hz，該第三範圍為0~9600Hz。 In one embodiment, the first frame rate is selected from a first range, the second frame rate is selected from a second range, and the third frame rate is selected from a third range. In one embodiment, the first range is 9600Hz~15000Hz, the second range is 14000Hz~25000Hz, and the third range is 0~9600Hz.

在一實施例中，可藉由控制所發射之光訊號的大小來加以判斷該光學滑鼠是否抬起。請參閱圖2及圖6所示，該控制單元30係控制該光源20執行至少一發光週期T，在各所述發光週期T中，該光源20發射多個第一光訊號S₁₁及至少一第二光訊號S₂₁，其中發射該第一光訊號S₁₁的時間長度為一第一時間t₁₁，且該第一光訊號S₁₁具有一第一光通量Φ₁₁，發射該第二光訊號S₂₁的時間長度為一第二時間t₂₁，且該第二光訊號S₂₁具有一第二光通量Φ₂₁。又，該第一光訊號S₁₁的大小與該第二光訊號S₂₁的大小不同，在一實施例中，該大小係指光訊號的光能，亦即光訊號的光通量與發射時間的乘積，該第一光訊號S₁₁的光能等於該第一時間t₁₁與該第一光通量Φ₁₁的乘積，該第二光訊號S₂₁的光能等於該第二時間t₂₁與該第二光通量Φ₂₁的乘積。請參閱如圖6所示之實施例，該第一光通量Φ₁₁等於該第二光通量Φ₂₁，但由於該第一時間t₁₁大於該第二時間t₂₁，故該第一時間t₁₁與該第一光通量Φ₁₁的乘積大於該第二時間t₂₁與第二光通量Φ₂₁的乘積，因此該第一光訊號S₁₁的大小與該第二光訊號S₂₁的大小不同。請參閱如圖7所示之實施例，該第一時間t₁₂等於該第二時間t₂₂，但該第一光通量Φ₁₂大於該第二光通量Φ₂₂，故該第一時間t₁₂與該第一光通量Φ₁₂的乘積大於該第二時間t₂₂與第二光通量Φ₂₂的乘積，因此該第一光訊號S₁₂的大小與該第二光訊號S₂₂的大小不同。在其餘實施例中，亦可使該第一時間不同於該第二時間、該第一光通量不同於該第二光通量，但使該第一時間與該第一光通量的乘積大於或小於該第二時間與該第二光通量的乘積，即可符合該第一光訊號的大小與該第二光訊號的大小不同。 In one embodiment, whether the optical mouse is lifted can be determined by controlling the magnitude of the emitted light signal. Please refer to FIG. 2 and FIG. 6, the control unit 30 controls the light source 20 to perform at least one lighting period T, and in each lighting period T, the light source 20 emits a plurality of first light signals _S11 and at least one The second optical signal S ₂₁ , wherein the time length for emitting the first optical signal S ₁₁ is a first time t ₁₁ , and the first optical signal S ₁₁ has a first luminous flux Φ ₁₁ , and the second optical signal S is emitted The time length of ₂₁ is a second time t ₂₁ , and the second optical signal S ₂₁ has a second luminous flux Φ ₂₁ . Moreover, the magnitude of the first optical signal _S11 is different from that of the second optical signal _S21 . In one embodiment, the magnitude refers to the optical energy of the optical signal, that is, the product of the luminous flux of the optical signal and the emission time , the luminous energy of the first optical signal S ₁₁ is equal to the product of the first time t ₁₁ and the first luminous flux Φ ₁₁ , and the luminous energy of the second optical signal S ₂₁ is equal to the second time t ₂₁ and the second luminous flux The product of Φ ₂₁ . Please refer to the embodiment shown in Fig. 6, the first luminous flux Φ ₁₁ is equal to the second luminous flux Φ ₂₁ , but since the first time t ₁₁ is greater than the second time t ₂₁ , the first time t ₁₁ and the The product of the first light flux _Φ11 is greater than the product of the second time _t21 and the second light flux _Φ21 , so the magnitude of the first light signal _S11 is different from that of the second light signal _S21 . Please refer to the embodiment shown in Figure 7, the first time t ₁₂ is equal to the second time t ₂₂ , but the first luminous flux Φ ₁₂ is greater than the second luminous flux Φ ₂₂ , so the first time t ₁₂ and the second luminous flux Φ 22 The product of a luminous flux _Φ12 is larger than the product of the second time _t22 and the second luminous flux _Φ22 , so the magnitude of the first light signal _S12 is different from that of the second light signal _S22 . In other embodiments, the first time can also be different from the second time, the first luminous flux can be different from the second luminous flux, but the product of the first time and the first luminous flux can be greater or smaller than the second The product of time and the second luminous flux can correspond to the difference between the magnitude of the first light signal and the magnitude of the second light signal.

進一步而言，在各所述發光週期T中，發射該第一光訊號及第二光訊號的次數及方式可有不同實施態樣。請參閱如圖6所示之實施例，係發射多次第一光訊號S₁₁及多次第二光訊號S₂₁(如圖6所示為兩次第一光訊號S₁₁及兩次第二光訊號S₂₁)，且所述第一光訊號S₁₁與所述第二光訊號S₁₂係交替發射。請參閱如圖8所示之實施例，係發射多次第一光訊號S₁₁及一次第二光訊號S₂₁(如圖8所示為三次第一光訊號S₁₁及一次第二光訊號S₂₁)。請參閱如圖9所示之實施例，係發射多次第二光訊號S₂₁及一次第一光訊號S₁₁(如圖9所示為一次第一光訊號S₁₁及三次第二光訊號S₂₁)。 Furthermore, in each of the light-emitting periods T, the times and ways of emitting the first light signal and the second light signal may have different implementations. Please refer to the embodiment shown in Figure 6, which is to emit multiple first optical signals _S11 and multiple second optical signals S21 (as shown in Figure ₆ , two first optical signals _S11 and two second optical signals light signal S ₂₁ ), and the first light signal S ₁₁ and the second light signal S ₁₂ are alternately emitted. Please refer to the embodiment shown in Figure 8, which is to emit multiple first light signals _S11 and one second light signal S21 (as shown in Figure ₈ , three first light signals _S11 and one second light signal S ₂₁ ). Please refer to the embodiment shown in Figure 9, which is to emit multiple second light signals S ₂₁ and one first light signal S ₁₁ (as shown in Figure 9, one first light signal S ₁₁ and three second light signals S ₂₁ ).

請參閱圖1及圖10所示，當該光學滑鼠1正常放置於該工作表面50使用，且該光源20發射該第一光訊號S₁₁時，對應的反射光由該感測單元40接收並產生一第一反射圖像I₁₁；當該光源20發射該第二光訊號S₂₁時，對應的反射光由該感測單元40接收並產生一第二反射圖像I₂₁。由於該第一光訊號S₁₁與該第二光訊號S₂₁具有不同大小，故當照射到該工作表面50時，該第一光訊號S₁₁與該第二光訊號S₂₁所對應的反射光也會有不同大小，則所產生之該第一反射圖像I₁₁與該第二反射圖像I₂₁將具有不同的照度參考值。以圖10為例，由於該第一光訊號S₁₁之大小大於該第二光訊號S₂₁之大小，故預設所對應產生之第一反射圖像I₁₁之第一照度參考值將大於第二反射圖像I₂₁之第二照度參考值。此時，將該第一反射圖像I₁₁之第一照度參考值與該第二反射圖像I₂₁之第二照度參考值加以運算後獲得一比對結果，該比對結果倘若符合第一反射圖像I₁₁之第一照度參考值大於第二反射圖像I₂₁之第二照度參考值的結果，則可判斷該光學滑鼠1係置放於該工作表面50上，而非抬起狀態。縱使該工作表面50的對比度較大或該工作表面50的紋理特徵不明顯，但由於該第一光訊號S₁₁與該第二光訊號S₂₁的大小已有所不同，故該光學滑鼠1所擷取到的反射圖像之照度參考值仍會受到該第一光訊號S₁₁與該第二光訊號S₂₁的大小影響，來產生符合於預設結果的差異。 Please refer to FIG. 1 and FIG. 10 , when the optical mouse 1 is normally placed on the work surface 50 for use, and the light source 20 emits the first light signal _S11 , the corresponding reflected light is received by the sensing unit 40 And generate a first reflected image I ₁₁ ; when the light source 20 emits the second light signal S ₂₁ , the corresponding reflected light is received by the sensing unit 40 to generate a second reflected image I ₂₁ . Since the first light signal _S11 and the second light signal _S21 have different magnitudes, when irradiating the working surface 50, the reflected light corresponding to the first light signal _S11 and the second light signal _S21 There are also different sizes, and the generated first reflected image _I11 and the second reflected image _I21 will have different illumination reference values. Taking Fig. ₁₀ as an example, since the magnitude of the first light signal _S11 is greater than the magnitude of the second light signal S21, the first illuminance reference value of the corresponding first reflection image _I11 generated by default will be greater than the first The second illuminance reference value of the reflection image _I21 . At this time, after calculating the first illuminance reference value of the first reflection image _I11 and the second illuminance reference value of the second reflection image _I21 , a comparison result is obtained. If the comparison result meets the first If the first illuminance reference value of the reflected image I11 is greater than the second illuminance reference value of the second reflected image _I21 , it can be judged that the optical mouse ₁ is placed on the work surface 50 instead of being lifted. state. Even though the contrast of the work surface 50 is relatively high or the texture features of the work surface 50 are not obvious, the optical mouse 1 has different magnitudes from the first light signal _S11 and the second light signal _S21 . The illuminance reference value of the captured reflection image will still be affected by the magnitudes of the first light signal _S11 and the second light signal _S21 , so as to produce a difference in line with the preset result.

請參閱圖11及圖12所示，當該光學滑鼠1被抬起而並非貼附於該工作表面50時，因為該第一光訊號S₁₁與該第二光訊號S₂₁已發散且未形成反射光，使得該第一光訊號S₁₁與該第二光訊號S₂₁的大小不影響該第一反射圖像I₁₂及該第二反射圖像I₂₂的照度參考值，故無論是對應該第一光訊號S₁₁所產生的該第一反射圖像I₁₂、或對應該第二光訊號S₂₁所產生該第二反射圖像I₂₂，照度參考值僅對應當下該工作表面50上或空中對應位置的亮度。因此，此時將該第一反射圖像I₁₁之第一照度參考值該第二反射圖像I₂₁之第二照度參考值加以運算後所獲得之比對結果，其二者會得到相近之照度參考值，無法符合該第一反射圖像I₁₁之第一照度參考值大於第二反射圖像I₂₁之第二照度參考值的結果，故可判斷該光學滑鼠1當下係離開該工作表面50，呈抬起狀態。 Please refer to FIG. 11 and FIG. 12 , when the optical mouse 1 is lifted and not attached to the work surface 50, because the first light signal S ₁₁ and the second light signal S ₂₁ have diverged and have not Reflected light is formed so that the magnitudes of the first light signal _S11 and the second light signal S21 do not affect the illuminance reference values _of the first reflected image _I12 and the second reflected image _I22 , so no matter for In response to the first reflected image I ₁₂ generated by the first light signal S ₁₁ , or the second reflected image I ₂₂ generated in response to the second light signal S ₂₁ , the illuminance reference value only corresponds to the current working surface 50 Or the brightness of the corresponding position in the sky. Therefore, at this time, the comparison result obtained after calculating the first illuminance reference value of the first reflection image _I11 and the second illuminance reference value of the second reflection image _I21 will be similar to each other. The illuminance reference value cannot meet the result that the first illuminance reference value of the first reflected image _I11 is greater than the second illuminance reference value of the second reflected image _I21 , so it can be judged that the optical mouse 1 is currently leaving the work The surface 50 is in a raised state.

所述照度參考值係可指與所述反射圖像中所有或部份像素之照度有關的運算數值，舉例而言，若圖10中所示之第一反射圖像I₁₁中各像素的照度如圖13所示、若圖10中所示之第二反射圖像I₁₁中各像素的照度如圖14所示、若圖12中所示之第一反射圖像I₁₂中各像素的照度如圖15所示、若圖12中所示之第二反射圖像I₂₂中各像素的照度如圖16所示，圖13至圖16中所示之照度僅為例示說明用，而非用以限制本發明。 The illuminance reference value may refer to an operational value related to the illuminance of all or some pixels in the reflected image, for example, if the illuminance of each pixel in the first reflected image I11 shown in FIG. ₁₀ As shown in Figure 13, if the illuminance of each pixel in the second reflected image I11 shown in Figure ₁₀ is shown in Figure 14, if the illuminance of each pixel in the first reflected image I12 shown in Figure ₁₂ As shown in FIG. 15, if the illuminance of each pixel in the second reflection image _I22 shown in FIG. 12 is as shown in FIG. 16, the illuminance shown in FIGS. to limit the invention.

在一實施例中，所述照度參考值為該反射圖像之所有像素的照度總和，該比對結果可為所述第一反射圖像之所有像素的照度總和與所述第二反射圖像之所有像素的照度總和的差值或比值，若判斷該比對結果小於一門檻值，則判斷該光學滑鼠為抬起狀態。假設差值的門檻值為5000、比值的門檻值為5，以光學滑鼠1於圖1及圖10狀態下所獲得反射圖像來看，該第一反射圖像I₁₁之所有像素的的照度總和為60649(如圖13所示)、該第二反射圖像I₂₁之所有像素的的照度總和為6164(如圖14所示)，則其差值為54485，其比值為9.84，顯示兩者的照度總和差異相當大，其比對結果大於所預設的門檻值，則判斷光學滑鼠1並非抬起狀態；以光學滑鼠1於圖11及圖12狀態下所獲得反射圖像來看，該第一反射圖像I₁₂之所有像素的的照度總和為17844(如圖15所示)、該第二反射圖像I₂₂之所有像素的的照度總和為16942(如圖16所示)，則其差值為902，其比值為1.05，顯示兩者的照度總和差異極微，其比對結果小於所預設的門檻值，則判斷光學滑鼠1為抬起狀態。 In one embodiment, the illuminance reference value is the sum of the illuminances of all the pixels of the reflected image, and the comparison result can be the sum of the illuminances of all the pixels of the first reflected image and the sum of the illuminances of all the pixels of the second reflected image. If the difference or ratio of the sum of the illuminances of all pixels is judged to be less than a threshold value, it is judged that the optical mouse is in a raised state. Assuming that the threshold value of the difference is 5000 and the threshold value of the ratio is 5, from the reflection images obtained by the optical mouse 1 in the state of Fig. 1 and Fig. ₁₀ , the values of all pixels of the first reflection image I11 are The sum of the illuminance is 60649 (as shown in Figure 13), and the sum of the illuminance of all pixels of the second reflected image _I21 is 6164 (as shown in Figure 14), then the difference is 54485, and the ratio is 9.84, showing The difference between the total illuminance of the two is quite large, and the comparison result is greater than the preset threshold value, then it is judged that the optical mouse 1 is not in the lifted state; the reflection image obtained by the optical mouse 1 in the state shown in Figure 11 and Figure 12 From the point of view, the sum of the illuminance of all the pixels of the first reflected image I12 is ₁₇₈₄₄ (as shown in FIG. 15 ), and the sum of the illuminance of all the pixels of the second reflected image I22 is 16942 (as shown in FIG. ₁₆ As shown), the difference is 902, and the ratio is 1.05, which shows that the difference between the total illuminance of the two is very small, and the comparison result is less than the preset threshold value, and the optical mouse 1 is judged to be in the raised state.

在一實施例中，所述照度參考值為該反射圖像之所有像素的照度平均值，該比對結果可為所述第一反射圖像之所有像素的照度總和與所述第二反射圖像之所有像素的照度平均值的差值或比值，若判斷該比對結果小於一門檻值，則判斷該光學滑鼠為抬起狀態。假設差值的門檻值為500、比值的門檻值為2，以光學滑鼠1於圖1及圖10狀態下所獲得反射圖像來看，該第一反射圖像I₁₁之所有像素的照度平均值為6738.78(如圖13所示)、該第二反射圖像I₂₁之所有像素的照度平均值為684.89(如圖14所示)，則其差值為6053.89，其比值為9.84，顯示兩者的照度平均值差異相當大，其比對結果大於所預設的門檻值，則判斷光學滑鼠1並非抬起狀態；以光學滑鼠1於圖11及圖12狀態下所獲得反射圖像來看，該第一反射圖像I₁₂之所有像素的照度平均值為1982.67(如圖15所示)、該第二反射圖像I₂₂之所有像素的照度平均值為1882.44(如圖16所示)，則其差值為100.23，其比值為1.05，顯示兩者的照度平均值差異極微，其比對結果小於所預設的門檻值，則判斷光學滑鼠1為抬起狀態。 In one embodiment, the illuminance reference value is the average illuminance value of all pixels in the reflected image, and the comparison result can be the sum of the illuminances of all pixels in the first reflected image and the second reflected image If the difference or ratio of the average illuminance values of all pixels in the image is judged to be less than a threshold value, the optical mouse is judged to be in a raised state. Assuming that the threshold value of the difference is 500 and the threshold value of the ratio is 2, the illuminance of all pixels of the first reflected image I ₁₁ can be seen from the reflection images obtained by the optical mouse 1 in the state shown in Figure 1 and Figure 10 The average value is 6738.78 (as shown in Figure 13), the illuminance average value of all pixels of the second reflection image _I21 is 684.89 (as shown in Figure 14), then its difference is 6053.89, and its ratio is 9.84, showing The difference between the average illuminance of the two is quite large, and the comparison result is greater than the preset threshold value, then it is judged that the optical mouse 1 is not in the lifted state; the reflection diagram obtained by the optical mouse 1 in the state shown in Figure 11 and Figure 12 From the perspective of the image, the average illuminance of all pixels in the first reflected image I12 is _1982.67 (as shown in Figure 15), and the average illuminance of all pixels in the second reflected image I22 is _1882.44 (as shown in Figure 16 As shown), the difference is 100.23, and the ratio is 1.05, which shows that the difference between the average illuminance values of the two is very small, and the comparison result is smaller than the preset threshold value, and the optical mouse 1 is judged to be in the raised state.

在一實施例中，所述照度參考值可為該反射圖像之部份像素的照度總和或照度平均值，而該比對結果亦可隨之調整。 In one embodiment, the illuminance reference value may be the sum or average illuminance of some pixels of the reflection image, and the comparison result may be adjusted accordingly.

在一實施例中，所述比對結果可比對相鄰時序所發射之第一光訊號及第二光訊號、或比對同一週期中的任一第一光訊號與任一第二光訊號、或比對不同週期中的第一光訊號與第二光訊號。 In one embodiment, the comparison result can be compared with the first optical signal and the second optical signal emitted in adjacent time sequences, or compared with any first optical signal and any second optical signal in the same period, Or compare the first light signal and the second light signal in different periods.

以上所述僅是本發明的實施例而已，並非對本發明做任何形式上的限制，雖然本發明已以實施例揭露如上，然而並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明技術方案的範圍內，當可利用上述揭示的技術內容作出些許更動或修飾為等同變化的等效實施例，但凡是未脫離本發明技術方案的內容，依據本發明的技術實質對以上實施例所作的任何簡單修改、等同變化與修飾，均仍屬於本發明技術方案的範圍內。 The above description is only an embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with the embodiment, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field, Within the scope of not departing from the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

1:光學滑鼠 50:工作表面 1: Optical mouse 50: work surface

Claims

一種光學滑鼠的控制方法，其包括以下步驟：當該光學滑鼠於一工作表面上操作時，以一第一幀率控制光訊號的發射及接收；及當該光學滑鼠離開該工作表面時，以一第二幀率控制光訊號的發射及接收，其中該第二幀率大於該第一幀率；當該光學滑鼠以該第二幀率控制光訊號的發射及接收時，判斷該光學滑鼠是否回到該工作表面，若是，則該光學滑鼠延遲一特定時間後再將切換回該第一幀率控制光訊號的發射及接收，在該段延遲的特定時間內，仍維持以該第二幀率控制光訊號的發射及接收。 A method for controlling an optical mouse, comprising the following steps: when the optical mouse is operated on a work surface, controlling the transmission and reception of light signals at a first frame rate; and when the optical mouse leaves the work surface When the optical mouse controls the transmission and reception of optical signals at a second frame rate, wherein the second frame rate is greater than the first frame rate; when the optical mouse controls the transmission and reception of optical signals at the second frame rate, it is judged Whether the optical mouse returns to the work surface, if so, the optical mouse will switch back to the first frame rate to control the emission and reception of the light signal after a certain time delay. The transmission and reception of optical signals are controlled at the second frame rate.

如請求項1所述之光學滑鼠的控制方法，其中當該光學滑鼠於該工作表面上操作時，進一步判斷該光學滑鼠是否具有位移，若是，則以該第一幀率控制光訊號的發射及接收；若否，則以一第三幀率控制光訊號的發射及接收；其中該第三幀率小於該第一幀率。 The method for controlling an optical mouse as described in Claim 1, wherein when the optical mouse is operated on the work surface, it is further judged whether the optical mouse has a displacement, and if so, the optical signal is controlled at the first frame rate if not, then control the transmission and reception of optical signals at a third frame rate; wherein the third frame rate is less than the first frame rate.

如請求項1所述之光學滑鼠的控制方法，其中該第一幀率選自一第一範圍，該第二幀率選自一第二範圍。 The control method of an optical mouse according to claim 1, wherein the first frame rate is selected from a first range, and the second frame rate is selected from a second range.

如請求項2所述之光學滑鼠的控制方法，其中該第一幀率選自一第一範圍，該第二幀率選自一第二範圍，該第三幀率選自一第三範圍。 The control method of an optical mouse as described in Claim 2, wherein the first frame rate is selected from a first range, the second frame rate is selected from a second range, and the third frame rate is selected from a third range .

如請求項1所述之光學滑鼠的控制方法，其中包含至少一發光週期，當判斷該光學滑鼠是否離開該工作表面時，包含以下步驟：在各所述發光週期中，發射一第一光訊號以獲得一第一反射圖像，以及一第二光訊號以獲得一第二反射圖像，所述第一光訊號的大小與所述第二光訊號的大小不同；計算所述第一反射圖像的一第一照度參考值以及所述第二反射圖像的一第二照度參考值且獲得一比對結果；及依據該比對結果判斷該光學滑鼠是否為離開該工作表面。 The control method of the optical mouse as described in claim 1, which includes at least one light-emitting period, and when judging whether the optical mouse leaves the work surface, includes the following steps: In each of the light-emitting periods, a first light signal is emitted to obtain a first reflected image, and a second light signal is emitted to obtain a second reflected image, and the magnitude of the first light signal is the same as that of the second light signal. The magnitudes of the two light signals are different; calculating a first illuminance reference value of the first reflected image and a second illuminance reference value of the second reflected image and obtaining a comparison result; and according to the comparison result It is judged whether the optical mouse is away from the work surface.

如請求項5所述之光學滑鼠的控制方法，其中該第一照度參考值與該第二照度參考值係分別於不同的發光週期中取得。 The control method for an optical mouse as claimed in item 5, wherein the first reference value of illumination and the second reference value of illumination are respectively obtained in different lighting periods.

如請求項5或6所述之光學滑鼠的控制方法，其中該第二反射圖像與該第一反射圖像係在時序上為相鄰關係。 The control method of an optical mouse as claimed in claim 5 or 6, wherein the second reflection image and the first reflection image are adjacent in time sequence.

如請求項5所述之光學滑鼠的控制方法，其中在各發光週期中，係分別發射多次該第一光訊號以及該第二光訊號，且所述第一光訊號與所述第二光訊號係交替發射。 The control method of an optical mouse as described in Claim 5, wherein in each light-emitting period, the first light signal and the second light signal are respectively emitted multiple times, and the first light signal and the second light signal Light signals are emitted alternately.

如請求項55所述之光學滑鼠的控制方法，其中所述第一照度參考值係指該第一反射圖像之所有或部份像素的照度總和或平均值，所述第二照度參考值係指該第二反射圖像之所有或部份像素的照度總和或平均值。 The method for controlling an optical mouse as described in Claim 55, wherein the first reference value of illumination refers to the sum or average value of the illumination of all or some pixels of the first reflected image, and the second reference value of illumination Refers to the sum or average of the illuminance of all or some pixels of the second reflection image.

如請求項9所述之光學滑鼠的控制方法，其中該比對結果為所述第一照度參考值與所述第二照度參考值的差值或比值，若判斷該比對結果小於一門檻值，則判斷該光學滑鼠為離開該工作表面。 The method for controlling an optical mouse as described in Claim 9, wherein the comparison result is the difference or ratio between the first illuminance reference value and the second illuminance reference value, if the comparison result is judged to be less than a threshold value, it is judged that the optical mouse is away from the work surface.

一種光學滑鼠，其包括：一殼體；一光源，其設置於該殼體中，並朝該殼體外提供一光訊號；一感測單元，其設置於該殼體中，並接收所述光訊號之一反射光訊號；及一控制單元，其設置於該殼體中，該控制單元控制該光源提供該光訊號，其中該控制單元控制該光源提供該光訊號包含以下模式：當該光學滑鼠於一工作表面上操作時，以一第一幀率控制光訊號的發射及接收；當該光學滑鼠離開該工作表面時，以一第二幀率控制光訊號的發射及接收，其中該第二幀率大於該第一幀率；當該光學滑鼠以該第二幀率控制光訊號的發射及接收時，判斷該光學滑鼠是否回到該工作表面，若是，則該光學滑鼠延遲一特定時間後再將切換回該第一幀率控制光訊號的發射及接收，在該段延遲的特定時間內，仍維持以該第二幀率控制光訊號的發射及接收。 An optical mouse, which includes: a housing; a light source, which is arranged in the housing and provides a light signal to the outside of the housing; A sensing unit, which is arranged in the casing, and receives a reflected light signal of the light signal; and a control unit, which is arranged in the casing, and the control unit controls the light source to provide the light signal, wherein The control unit controlling the light source to provide the light signal includes the following modes: when the optical mouse is operated on a work surface, control the transmission and reception of the light signal at a first frame rate; when the optical mouse leaves the work surface When the optical mouse controls the transmission and reception of optical signals at a second frame rate, wherein the second frame rate is greater than the first frame rate; when the optical mouse controls the transmission and reception of optical signals at the second frame rate, it is judged Whether the optical mouse returns to the work surface, if so, the optical mouse will switch back to the first frame rate to control the emission and reception of the light signal after a certain time delay. The transmission and reception of optical signals are controlled at the second frame rate.

如請求項11所述之光學滑鼠，其中當該光學滑鼠於該工作表面上操作時，該控制單元進一步判斷該光學滑鼠是否具有位移，若是，則以該第一幀率控制光訊號的發射及接收；若否，則以一第三幀率控制光訊號的發射及接收；其中該第三幀率小於該第一幀率。 The optical mouse as described in claim 11, wherein when the optical mouse is operated on the work surface, the control unit further judges whether the optical mouse has a displacement, and if so, controls the optical signal at the first frame rate if not, then control the transmission and reception of optical signals at a third frame rate; wherein the third frame rate is less than the first frame rate.

如請求項11所述之光學滑鼠，其中該第一幀率選自一第一範圍，該第二幀率選自一第二範圍。 The optical mouse as claimed in claim 11, wherein the first frame rate is selected from a first range, and the second frame rate is selected from a second range.

如請求項12所述之光學滑鼠，其中該第一幀率選自一第一範圍，該第二幀率選自一第二範圍，該第三幀率選自一第三範圍。 The optical mouse according to claim 12, wherein the first frame rate is selected from a first range, the second frame rate is selected from a second range, and the third frame rate is selected from a third range.

如請求項11所述之光學滑鼠，其中該控制單元控制該光源提供該光訊號時，包含至少一發光週期，當該控制單元判斷該光學滑鼠是否離開該工作表面時，包含以下步驟：在各所述發光週期中，發射一第一光訊號以獲得一第一反射圖像，以及一第二光訊號以獲得一第二反射圖像，所述第一光訊號的大小與所述第二光訊號的大小不同；計算所述第一反射圖像的一第一照度參考值以及所述第二反射圖像的一第二照度參考值且獲得一比對結果；及依據該比對結果判斷該光學滑鼠是否為離開該工作表面。 The optical mouse as described in claim item 11, wherein when the control unit controls the light source to provide the light signal, at least one light-emitting period is included, and when the control unit judges whether the optical mouse leaves the work surface, the following steps are included: In each of the light-emitting periods, a first light signal is emitted to obtain a first reflected image, and a second light signal is emitted to obtain a second reflected image, and the magnitude of the first light signal is the same as that of the second light signal. The magnitudes of the two light signals are different; calculating a first illuminance reference value of the first reflected image and a second illuminance reference value of the second reflected image and obtaining a comparison result; and according to the comparison result It is judged whether the optical mouse is away from the work surface.

如請求項15所述之光學滑鼠，其中該第一照度參考值與該第二照度參考值係分別於不同的發光週期中取得。 The optical mouse according to claim 15, wherein the first illuminance reference value and the second illuminance reference value are respectively obtained in different lighting cycles.

如請求項15或16所述之光學滑鼠，其中該第二反射圖像與該第一反射圖像係在時序上為相鄰關係。 The optical mouse as claimed in claim 15 or 16, wherein the second reflection image and the first reflection image are adjacent in time sequence.

如請求項15所述之光學滑鼠，其中在各發光週期中，係分別發射多次該第一光訊號以及該第二光訊號，且所述第一光訊號與所述第二光訊號係交替發射。 The optical mouse as described in claim 15, wherein in each light-emitting cycle, the first light signal and the second light signal are respectively emitted multiple times, and the first light signal and the second light signal are Alternate firing.

如請求項15所述之光學滑鼠，其中所述第一照度參考值係指該第一反射圖像之所有或部份像素的照度總和或平均值，所述第二照度參考值係指該第二反射圖像之所有或部份像素的照度總和或平均值。 The optical mouse as described in claim 15, wherein the first illuminance reference value refers to the sum or average of the illuminance of all or some pixels of the first reflection image, and the second illuminance reference value refers to the The sum or average of the illuminance of all or some pixels of the second reflection image.

如請求項19所述之光學滑鼠，其中該比對結果為所述第一照度參考值與所述第二照度參考值的差值或比值，若判斷該比對結果小於一門檻值，則判斷該光學滑鼠為離開該工作表面。The optical mouse as described in claim 19, wherein the comparison result is the difference or ratio between the first illuminance reference value and the second illuminance reference value, if it is judged that the comparison result is less than a threshold value, then It is determined that the optical mouse is off the work surface.