TW200528688A - Direction judgment system - Google Patents
Direction judgment system Download PDFInfo
- Publication number
- TW200528688A TW200528688A TW93105020A TW93105020A TW200528688A TW 200528688 A TW200528688 A TW 200528688A TW 93105020 A TW93105020 A TW 93105020A TW 93105020 A TW93105020 A TW 93105020A TW 200528688 A TW200528688 A TW 200528688A
- Authority
- TW
- Taiwan
- Prior art keywords
- light source
- light
- source group
- patent application
- scope
- Prior art date
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Image Input (AREA)
Abstract
Description
200528688 五、發明說明α) 【發明所屬之技術領域】 本發明係關於一種方向判斷系統，特別是關於一種 運用影像感測器之方向判斷系統。 【先前技術】 目前，影像感測器多用在數位相機、數位攝影機、 掃描器、影印機、光學滑鼠等影像處理的產品領域。對 於方向判斷的應用，僅有應用於光學滑鼠等極短距離 者。其利用比對前後兩張不同影像的特徵值，來達到判 斷光學滑鼠與反射面的相對運動。 對於長距離的方向判斷，目前則未見有運用影像感 測器來處理的相關應用。所以，此為一個未來可發展的 應用方向。 【發明内容】 鑑於以上習知技術的問題，本發明提供一種方向判 斷系統，可判斷遠距離光源之二維方位。 本發明之另一目的在於，提供一種方向判斷系統， 可判斷遠距離光源之一維方位。 本發明尚有一目的在於，提供一種方向判斷系統， 可判斷遠距離光源之方位、移動方向、身份與控制訊 號。 為達上述目的，本發明提供一種方向判斷系統，包 含有：一光源組；以及一影像感測組件，其由一鏡頭、 一面型影像感測器，以及一處理單元所組成。 其中，光源組與影像感測組件係相距一長距離，使200528688 V. Description of the invention α) [Technical field to which the invention belongs] The present invention relates to a direction judgment system, and more particularly to a direction judgment system using an image sensor. [Previous Technology] Currently, image sensors are mostly used in image processing products such as digital cameras, digital cameras, scanners, photocopiers, and optical mice. As for the application of direction judgment, it is only applied to extremely short distances such as an optical mouse. It uses the comparison of the characteristic values of two different images before and after to determine the relative movement of the optical mouse and the reflective surface. For long-distance direction judgment, there are currently no related applications using image sensors for processing. Therefore, this is an application direction that can be developed in the future. [Summary of the Invention] In view of the problems of the above conventional technologies, the present invention provides a direction judgment system that can judge the two-dimensional orientation of a long-distance light source. Another object of the present invention is to provide a direction determination system that can determine a one-dimensional orientation of a distant light source. Another object of the present invention is to provide a direction determination system that can determine the orientation, moving direction, identity and control signals of a long-distance light source. To achieve the above object, the present invention provides a direction determination system including: a light source group; and an image sensing component, which is composed of a lens, a planar image sensor, and a processing unit. Among them, the light source group and the image sensing component are separated by a long distance, so that
第7頁 200528688 五、發明說明（2) 光源組所發射之光由影像感測組件感測為一映射平面所 映射之一點光源，並由該面型影像感測器之像素組感測 該光源組所發射之光，該處理單元於接收該面型影像感 測器所傳送之感測訊號後判斷該光源組所位於該映射平 面之位置，以判斷該光源組相對於該影像感測組件之二 維方向。Page 7 200528688 V. Description of the invention (2) The light emitted by the light source group is sensed by the image sensing component as a point light source mapped by a mapping plane, and the light source is sensed by the pixel group of the area image sensor After the light emitted from the group is received, the processing unit determines the position of the light source group in the mapping plane after receiving the sensing signal transmitted by the surface image sensor, so as to determine the position of the light source group relative to the image sensing component. Two-dimensional orientation.
此外，本發明更提供一種方向判斷系統，包含有： 一光源組，由一編碼單元與一光源所組成，該編碼單元 可依據設定編輯該光源發光之明暗時間，以使該光源組 具身份（I D )識別之功能；以及一影像感測組件，由一鏡 頭、一面型影像感測器，以及一處理單元所組成。 其中，該光源組與該影像感測組件係相距一長距 離，使該光源組所發射之光由該影像感測組件感測為一 映射平面所映射之一點光源，並由該面型影像感測器之 像素組感測該光源組所發射經編碼之光，該處理單元於 接收該面型影像感測器所傳送之感測訊號後判斷該光源 組所位於該映射平面之位置，以判斷該光源組相對於該 影像感測組件之二維方向，並依據該明暗時間判斷該光 源組之身份。In addition, the present invention further provides a direction judgment system, including: a light source group, which is composed of a coding unit and a light source, and the coding unit can edit the light and shade time of the light source according to the setting to make the light source group have an identity ID) identification function; and an image sensing component, which is composed of a lens, a planar image sensor, and a processing unit. The light source group is at a long distance from the image sensing component, so that the light emitted by the light source group is sensed by the image sensing component as a point light source mapped by a mapping plane, and is sensed by the surface image. The pixel group of the detector senses the encoded light emitted by the light source group, and the processing unit determines the position of the light source group on the mapping plane after receiving the sensing signal transmitted by the area image sensor, so as to determine The two-dimensional direction of the light source group relative to the image sensing component, and the identity of the light source group is determined according to the light and dark time.
此外，本發明更提供一種方向判斷系統，包含有： 複數個光源組，每個光源組各由一編碼單元與一光源所 組成，該編碼單元可依據設定編輯該光源發光之明暗時 間，以使該複數個光源組個別具不同之身份（I D );以及 一影像感測組件，由一鏡頭、一面型影像感測器，以及In addition, the present invention further provides a direction judgment system, including: a plurality of light source groups, each of which is composed of a coding unit and a light source, and the coding unit can edit the light and dark time of the light source according to the setting so that The plurality of light source groups each have different identities (IDs); and an image sensing component, which includes a lens, a planar image sensor, and
第8頁 200528688 五、發明說明（3) 一處理單元所組成。 其中，該複數個光源組與該影像感測組件係各相距 一段長距離，使該複數個光源組所發射之光由該影像感 測組件感測為多個或同一個映射平面所映射之複數個點 光源，並由該面型影像感測器之像素組感測該複數個光 源組所發射經編碼之光，該處理單元於接收該面型影像 感測器所傳送之感測訊號後判斷該複數個光源組所位於 該多個或同一個映射平面之位置，以判斷該複數個光源 組相對於該影像感測組件之二維方向，並依據該經編碼 之光所產生之明暗時間判斷該複數個光源組之身份。 更進一步者，本發明亦可運用線型影像感測器進行 一維方位、移動、身份或控制訊號的判斷。 為讓本發明之上述和其他目的、特徵、和優點能更 明顯易懂，下文特舉數個較佳實施例，並配合所附圖 式，作詳細說明如下： 【實施方式】 首先，請參考「第1圖」，其為本發明之第一具體實 施例。光源1 0與影像感測組件2 0相距一段長距離，因 此，光源1 0對於影像感測組件2 0來講可視為一點光源， 因而，無發射角度的問題。影像感測組件2 0則包含有： 鏡頭2 2、影像感測器2 4與處理單元2 6。鏡頭2 2與影像感 測器2 4的組合，可以接收入射光，並由影像感測器2 4感 應為電壓訊號。並且，影像感測器2 4為一面型影像感測 器，如此，即可辨識二維的空間方向。Page 8 200528688 V. Description of the invention (3) It consists of a processing unit. Wherein, the plurality of light source groups and the image sensing component are separated by a long distance, so that the light emitted by the plurality of light source groups is sensed by the image sensing component as a plurality of or a plurality of the same mapping plane. Point light sources, and the encoded light emitted by the plurality of light source groups is sensed by the pixel group of the area image sensor, and the processing unit judges after receiving the sensing signals transmitted by the area image sensor The plurality of light source groups are located at the positions of the multiple or the same mapping plane to determine the two-dimensional direction of the plurality of light source groups with respect to the image sensing component, and according to the light and dark time generated by the coded light The identity of the plurality of light source groups. Furthermore, the present invention can also use a linear image sensor to judge one-dimensional orientation, movement, identity, or control signals. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following exemplifies several preferred embodiments and the accompanying drawings for detailed description as follows: [Embodiment] First, please refer to "Figure 1" is a first specific embodiment of the present invention. The light source 10 and the image sensing component 20 are separated by a long distance. Therefore, the light source 10 can be regarded as a point light source for the image sensing component 20, so there is no problem of the emission angle. The image sensing component 20 includes: a lens 2 2, an image sensor 24, and a processing unit 26. The combination of the lens 22 and the image sensor 24 can receive incident light, and the image sensor 24 can sense a voltage signal. In addition, the image sensor 24 is a planar image sensor, so that it can recognize a two-dimensional spatial direction.
200528688 五、發明說明（4) 當光源1 0可視為一點光源時，由影像感測器2 4端看 出去，光源1 0的位置當位於空間中的某個點。而對面型 影像感測器來講，光源1 0所構成的點映射為與面型影像 感測器平行的一個映射平面的一點。200528688 V. Description of the invention (4) When the light source 10 can be regarded as a point light source, the end of the image sensor 24 can be seen, and the position of the light source 10 should be at a certain point in space. As for the area image sensor, the point formed by the light source 10 is mapped to a point on a mapping plane parallel to the area image sensor.
實際運作時，光源1 0所發出的光為影像感測器2 4所 接收時，影像感測器2 4僅會有部分的像素感應到光源1 0 所發出的光訊號，亦即，其為對應到映射平面的該點光 源。只要我們知道哪個像素（或像素群）接收到光源1 0所 發出的光訊號，我們即可知道光源1 0所處的的方位。更 進一步地，比較多次接收到的光源1 0所發出的訊號，我 們即可知道光源1 0的移動方向。 本發明的第二具體實施例，請參考「第2圖」。本發 明在第一光源組1 0 a增加了一編碼單元1 4，其可控制光源 1 2的發光為脈波形式，也就是，在不同的時間區間中個 別為明暗。進一步地，透過編碼單元1 4的不同編碼，本 發明即可由第一光源組1 0 a輸出不同的控制訊號。當影像 感測組件2 0接收到第一光源組1 0 a所發出的脈波光訊號 時，只要經由處理單元2 4加以解碼即可輸出控制訊號， 進而控制連接的設備。In actual operation, when the light emitted by the light source 10 is received by the image sensor 24, only a part of the pixels of the image sensor 24 will sense the light signal emitted by the light source 10, that is, it is The point light source corresponding to the mapping plane. As long as we know which pixel (or group of pixels) receives the light signal from light source 10, we can know where the light source 10 is located. Furthermore, by comparing the signals received by the light source 10 received multiple times, we can know the moving direction of the light source 10. For a second specific embodiment of the present invention, please refer to "Fig. 2". The present invention adds a coding unit 14 to the first light source group 10a, which can control the light emission of the light source 12 to be in the form of a pulse wave, that is, the light and darkness are different in different time intervals. Further, through different codes of the coding unit 14, the present invention can output different control signals from the first light source group 10a. When the image sensing component 20 receives the pulse light signal from the first light source group 10a, it only needs to decode it through the processing unit 24 to output a control signal, thereby controlling the connected equipment.
此外，可增加一控制光源明暗的機制，也就是編碼 機制，好讓光源發光時可個別代表不同的身份 (Identity)。也就是，將編碼單元1 4的編碼方式改變， 例如，脈寬（P u 1 s e W i d t h )不同，或者，同一控制訊號的 明暗時間間隔不同等等，即可讓不同的光源組有不同的In addition, a mechanism for controlling the brightness of the light source, that is, a coding mechanism, can be added so that the light source can individually represent different identities when it emits light. That is, changing the encoding method of the encoding unit 14, for example, the pulse width (P u 1 s e W i d t h) is different, or the light and dark time intervals of the same control signal are different, etc., so that different light source groups have different
第10頁 200528688 可 後 碼 解 4 2 元 單 8一一 ίι 處 由 亦 識 辨 份 身 的 同 不 } 此 5 彳而 明 說。 ㈣份 、身 五 考定 參判 請的 ，向 。著方 識接中 辨 間 資 空 厂 圖 器 測 感 ;像 第影 到 達 何 如 明 發 本 了 明 說 其 為 身 本 第 於 面 平 測 rc 感10 像組 影源 與光 一 一 出第 切當 可， 亦是 置就 位也 的。 ao ο ο IX IX 組面 源平 光射 一映 器 的 行 平 組 測 感 像 影 與 頭 10鏡 組由 源度 光廣 £ ο 一的 1X 組第00 源的 光到 一看：；& 第所— 得 4 使器 ，測 遠感 夠像ί 離影10( 距由面 的，平 件時射 映 源該 光於 點位 一即 為oa 視 被 可 映 此 而 〇 上 面 平 決 所 面 平 射 映 於 位 到 測 感 會 只 就 4 2 器 測 rc 感10 像組 影源 ，光 是一 於第 。中 定當 點 光 的 置 位 器 測 感 像 影 到 應 對 會 其 4於 2位 器i a 測ο r — I 感組 像源 影光 斷一 判第 要為 只算 。換 者可 示即 Ntr aj 中我S1一 ， 如置 ，位 置的 位點 對光 s 的收 4接 置 位 的 中 當 ο ο 11 面 平 射 映 器 測 感 像 影 時 移 也 4可。 即度 ，il 變與 改向 的方 後動 前移 動的 移00 •‘算 10C計 組要 光。d 在 一動a 第移10 當的組 ，點源 地光光 樣到一 同測第 感道 會知 面 平 訊 光 的 暗 明 暗 明 是 會 也 10光 組的 源到 光測 一感 第4 2 於器 由測 ，感 外像 此影 光 光 的 射 發 所 的 石‘ 經 為 件ί 組Ξ 測組 感源 像光 影一 由第 經出 要解 只時。 。同訊 號可資 即 碼 解 以 加 元 單 ίι 處 的 中 種 三 號 訊 制 控 與 份 身 Λ 向 方 的 位 方 的 源 光 個 多 別 辨 以 4 可第 明厂 發考 本參 ，請 ίι， 原號 的訊 同制 相控 用與 份 身 圖 第 將 明 發 本 源 光Page 10 200528688 Can be postcoded 4 2 yuan single 8 1 11 You You also identify your identity} This 5 said clearly. If you want to participate in the competition, please refer to. I learned about the sensor detection in the middle of the air-to-air factory; like the first film arrived, He Ruming made a copy of it and said it was the first person to measure the rc sense on the surface. 10 The photo source and the light can be cut out one by one. It is also in place. ao ο ο IX group IX plane source flat light projector projector line flat group sensor image and head 10 mirror group from the source of the wide light £ ο one of the 1X group of the 00th source of light to a look:; & — There are 4 envoys, the telemetry is enough like ί Li Ying 10 (distance from the surface, the projection source when the piece is flat, the light is at the point one is oa, it can be reflected, and the top flat surface is flat. When the sensor is in place, it will only measure the rc sensor 10 on the 4 2 device. The light source is the first one. The positioner of the medium spot light will measure the sensor image to the 4 sensor 2 ia. r — I sense group image source shadow light is judged to be only counted. Alternatively, it can be shown that Ntr aj I S1 a, if set, the position of the position of the light s received 4 set the position of the appropriate ο ο 11 plane-level projectors can also measure the time-shift of the image. 4. That is, the degree of il changes and redirects the movement of the movement before the movement 00 • 'Calculate the 10C meter group to light. d in a movement a the first 10 Group, point source ground light and light samples to measure the first sensory channel will know the darkness of the flat level light will be The source of light from the 10-light group is also measured by the sensor. The 2 2 sensor is measured by the device, and the outside is like the stone of the light-emitting station. The group is a piece of light. When it ’s time to solve the problem, the same signal can be decoded in the Canadian dollar bill at the middle of the three kinds of signal control and the identity of the source of the ^ side of the source of light to identify the number of 4 can be issued Examination of the text, please, please, the original number of the same system and the use of personal control map will be the source of light
第11頁 200528688 五、發明說明（6) 組1 0 a、第二光源組1 0 b與第三光源組1 0 c採用「第2圖」 的架構，只要調整其中的編碼單元的編碼方式，也就 是，第一光源組1 0 a、第二光源組1 0 b與第三光源組1 0 c三 者的編碼方式不同，三者即具有不同的身份。不過，影 像感測組件當中的處理單元必須設定好三個光源組的解 碼方式。同時，可以辨認三個光源組的方向以及個別的 控制指令等等。 此外，由於從影像感測器2 4看出去為一個平面的影 像，並非立體的影像，因此，三個光源組可以視為在相 同的映射平面上。換句話說，三個光源組只要在足夠形 成點光源的距離以外，面型影像感測器即會將三者視為 在同一平面上。而三個點光源就有各自的方位、各自的 身份以及可以輸出各自的控制指令。 此種可辨認身份的方式，可運用於許多產品上。例 如，多人同時參與的互動式遊戲。 上述的各種實施例，係運用面型影像感測器來作二 維方向的判斷。事實上，運用相同的原理，本發明可延 伸至一維方向的判斷。請參考「第5圖」，本發明之第三 具體實施例。本發明將影像感測組件當中的面型影像感 測器換為線型影像感測器，構成線型影像感測組件3 0。 同樣地，由線型影像感測組件3 0當中的線型影像感測器 所看出去的所有光點，線型影像感測器均會將其視為一 維的映射線當中的一點。亦即，只要線型影像感測器感 測到光源1 0所發出的光，其即可於感測器當中的像素感Page 11 200528688 V. Description of the invention (6) Group 1 0 a, second light source group 1 0 b and third light source group 1 0 c adopt the structure of "Figure 2", as long as the coding unit coding method is adjusted, That is, the encoding methods of the first light source group 10 a, the second light source group 10 b, and the third light source group 10 c are different, and the three have different identities. However, the processing unit in the image sensing component must set the decoding method of the three light source groups. At the same time, the directions of the three light source groups and individual control instructions can be identified. In addition, as seen from the image sensor 24, it is a plane image, not a three-dimensional image. Therefore, the three light source groups can be regarded as being on the same mapping plane. In other words, as long as the three light source groups are far enough away from forming a point light source, the area image sensor will treat them as being on the same plane. The three point light sources have their own orientation, their respective identities, and can output their own control instructions. This identifiable method can be applied to many products. For example, an interactive game in which multiple people participate simultaneously. The various embodiments described above use a planar image sensor to make a two-dimensional determination. In fact, using the same principle, the present invention can be extended to one-dimensional judgment. Please refer to "Figure 5", a third embodiment of the present invention. In the present invention, the surface image sensor in the image sensing module is replaced with a linear image sensor to form a linear image sensing module 30. Similarly, for all light spots seen by the linear image sensor in the linear image sensor 30, the linear image sensor will treat it as a point in a one-dimensional mapping line. That is, as long as the linear image sensor senses the light emitted by the light source 10, it can be sensed by the pixels in the sensor.
200528688 五、發明說明（7) 測為電壓訊號，並輸出至處理單元進行處理，然後判斷 出其位於映射線的方位以及一維移動方向。 同樣地，將光源1 0換為如第一光源組1 0 a的組件，線 型影像感測組件3 0即可辨識第一光源組1 0 a的身份、控制 訊號。 此外，若同時採用多個光源組，例如「第4圖」的三 個光源組，同樣可辨識一維的三個光源組的身份、方 向、與控制訊號。惟其限制在於線型影像感測器的感測 角度，必須藉由鏡頭加以擴張其視角。200528688 V. Description of the invention (7) The voltage signal is measured and output to the processing unit for processing, and then it is determined that it is located on the mapping line and its one-dimensional moving direction. Similarly, by replacing the light source 10 with a component such as the first light source group 10a, the linear image sensing component 30 can recognize the identity and control signal of the first light source group 10a. In addition, if multiple light source groups are used at the same time, for example, the three light source groups in "Figure 4", the identity, direction, and control signals of the three light source groups in one dimension can also be identified. However, the limitation is that the sensing angle of the linear image sensor must be expanded by the lens.
以上所有的實施例，光源均可採用發光二極體（LED ) 與電源的組合。並且，可裝設開關或者控制面板來進行 對光源或光源組的輸出控制。 或者，光源可採用一反射裝置，藉以反射週邊的光 至影像感測組件。 雖然本發明之較佳實施例揭露如上所述，然其並非 用以限定本發明，任何熟習相關技藝者，在不脫離本發 明之精神和範圍内，當可作些許之更動與潤飾，因此本 發明之專利保護範圍須視本說明書所附之申請專利範圍 所界定者為準。In all the above embodiments, a combination of a light emitting diode (LED) and a power source can be used as the light source. In addition, a switch or a control panel can be installed to control the output of a light source or a light source group. Alternatively, the light source may use a reflecting device to reflect the surrounding light to the image sensing component. Although the preferred embodiment of the present invention is disclosed as described above, it is not intended to limit the present invention. Any person skilled in the related art can make some changes and retouching without departing from the spirit and scope of the present invention. The patent protection scope of the invention shall be determined by the scope of the patent application scope attached to this specification.
第13頁 200528688 圖式簡單說明 第1圖係為本發明之第一具體實施例； 第2圖係為本發明之第二具體實施例； 第3圖係為本發明之第一、二具體實施例之3 D示意 圖； 第4圖係為本發明之第二具體實施例之一應用例；以 及 第5圖係為本發明之第三具體實施例。 【圖 示符 號 說 明 ] 10 光源 10a 光源組 10b 第二 -夕 匕源組 10c 第J 光源組 12 光 源 14 編 碼 單 元 20 影 像 感 測 組 件 22 鏡 頭 24 面 型 影 像 感 測 器 26 處 理 單 元 30 線 性 影 像 感 測 組件 100 映 射 平 面 200 映 射 線Page 13 200528688 Brief Description of Drawings Figure 1 is the first specific embodiment of the present invention; Figure 2 is the second specific embodiment of the present invention; Figure 3 is the first and second specific implementations of the present invention Example 3D is a schematic diagram; FIG. 4 is an application example of a second specific embodiment of the present invention; and FIG. 5 is a third specific embodiment of the present invention. [Illustration of Symbols] 10 light source 10a light source group 10b second-night light source group 10c J light source group 12 light source 14 coding unit 20 image sensing component 22 lens 24 area image sensor 26 processing unit 30 linear image sensing Test component 100 mapping plane 200 mapping line
第14頁Page 14
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW93105020A TWI294960B (en) | 2004-02-27 | 2004-02-27 | Direction judgment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW93105020A TWI294960B (en) | 2004-02-27 | 2004-02-27 | Direction judgment system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200528688A true TW200528688A (en) | 2005-09-01 |
| TWI294960B TWI294960B (en) | 2008-03-21 |
Family
ID=45068296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW93105020A TWI294960B (en) | 2004-02-27 | 2004-02-27 | Direction judgment system |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI294960B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI420132B (en) | 2009-10-02 | 2013-12-21 | Generalplus Technology Inc | Infrared positioning apparatus and system thereof |
-
2004
- 2004-02-27 TW TW93105020A patent/TWI294960B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TWI294960B (en) | 2008-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8847882B2 (en) | Apparatus for recognizing the position of an indicating object | |
| TW511038B (en) | High contrast, low distortion optical acquisition systems for image capturing | |
| US20090103853A1 (en) | Interactive Surface Optical System | |
| RU2010101272A (en) | TOUCH SCREEN BASED ON COMPLETE INTERNAL DISPLAY VIOLATION | |
| TWI412838B (en) | Touch display apparatus and backlight module | |
| TW201001258A (en) | Determining the location of one or more objects on a touch surface | |
| TW200813462A (en) | Mobile device tracking | |
| WO2004001332A1 (en) | System and method for determining 3-d coordinates of a surface using a coded array | |
| TW201112091A (en) | Optical touch device and locating method thereof, and liner light source module | |
| US6907672B2 (en) | System and method for measuring three-dimensional objects using displacements of elongate measuring members | |
| JP2007310382A (en) | Apparatus for projecting optical pattern | |
| JP2007052025A (en) | System and method for optical navigation device having sliding function constituted so as to generate navigation information through optically transparent layer | |
| CN109086694A (en) | A kind of face identification system and method | |
| CN102985786A (en) | A light projector and vision system for distance determination | |
| US20140240228A1 (en) | User interface display device | |
| JP2018186381A (en) | Image reader and document size detection method | |
| US20240019715A1 (en) | Air floating video display apparatus | |
| TW200528688A (en) | Direction judgment system | |
| TWI362604B (en) | Point device | |
| TW200900663A (en) | Optical motion identification device utilizes partial total internal reflection light source and/or partial non-total internal reflection light source | |
| TW593971B (en) | Optics method for detecting object | |
| CN102063228B (en) | Optical sensing system and touch screen applying same | |
| US11209294B2 (en) | Thin proximity sensing device | |
| JP2009520249A (en) | Scanning engine with guide light | |
| CN209783873U (en) | stray light detection device of TOF camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |