Patent Publication Number: US-2021165496-A1

Title: Apparatus having gesture sensor

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a divisional application of U.S. application Ser. No. 15/627,824 filed on Jun. 20, 2017, which is a divisional application of U.S. application Ser. No. 14/287,164 filed on May 26, 2014, and entitled “APPARATUS HAVING GESTURE SENSOR”, now pending, the entire disclosures of which are incorporated herein by reference. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an apparatus having gesture sensor; in particular, to the water supply with a gesture sensor, in which the water supply in the present invention can be a toilet or a water tap. 
     2. Description of Related Art 
     Nowadays, infrared sensor toilets and infrared sensor water taps are widely utilized in the bathroom of many public places such as hospital, department store, station or restaurant. People can activate the water tap and the flush device of the toilet without touching the switch by utilizing the infrared sensor toilet and the infrared sensor water tap. Thus, the chance of contact between the hands and the bacteria can be reduced, so as to prevent the infection of some diseases. 
     The conventional infrared sensor water tap and the conventional infrared sensor toilet each have the simple function of stopping and releasing flow. Taking the recent infrared sensor water tap as example, the infrared sensor water tap can provide and stop the flow, but cannot control the discharge, which described here and in the following means the amount of flow passing through the water outlet during a period of time, of the flow as the traditional water tap, so that the conventional infrared sensor water tap can&#39;t provide the various discharge of flow. 
     SUMMARY OF THE INVENTION 
     The present invention provides an apparatus having gesture sensor. The apparatus may be a water supply which utilizes a gesture sensor and a control valve to control the discharge of the flow. 
     The present invention provides an apparatus having gesture sensor. The apparatus may be a water tap which utilizes the gesture sensor to provide various discharge of the flow. 
     The present invention provides an apparatus having gesture sensor. The apparatus may be a toilet which utilizes the gesture sensor to provide output amount of the flow. 
     One embodiment in the present invention provides an apparatus having gesture sensor. The apparatus may be a water supply including a body, a control valve and a gesture sensor. The body includes a water outlet to provide flow. The control valve is configured on the body to control the flow. The gesture sensor includes an image sensing unit and a processing unit. The image sensing unit captures the gesture image performed by the user. The processing unit is electrically connected to the image sensing unit. The processing unit sends at least a control command to the control valve according to the gesture image. The control command includes a first-discharge command or a second-discharge command. The control valve can change the discharge of the flow as a first discharge or a second discharge according to the first-discharge command or the second-discharge command. The first discharge is larger than the second discharge. 
     Another embodiment in the present invention provides another apparatus having gesture sensor. The apparatus is a water supply. The water supply comprises a body, a control valve and a gesture sensor. The body includes a water outlet to provide a flow. The control valve is configured on the body to control the flow. The gesture sensor includes an image sensing unit and a processing unit. The image sensing unit captures the gesture image performed by the user. The processing unit is electrically connected to the image sensing unit. The processing unit sends at least a control command to the control valve according to the gesture image. The control command includes a first water-output command or second water-output command. The control valve can change the output amount of the flow as a first output amount or a second output amount according to the first water-output command or the second water-output command. 
     Another embodiment in the present invention provides an apparatus having gesture sensor. The apparatus is a water tap. The water tap includes a tap body, a control valve and a gesture sensor. The tap body includes a water outlet to provide the flow. The control valve is configured on the tap body to control the flow. The gesture sensor includes an image sensing unit and a processing unit. The image sensing unit can capture the at least a gesture image performed by the user. The processing unit is electrically connected to the image sensing unit. The processing unit sends at least a control command to the control valve according to the gesture image. The control command includes an increment command or decrement command. The control valve can decrease the discharge of the flow according to the decrement command or increase the discharge of the flow according to the increment command. 
     The other embodiment in the present invention provides an apparatus having gesture sensor. The apparatus is a toilet. The toilet includes a toilet bowl, a toilet tank, a control valve and a gesture sensor. The toilet bowl includes a water inlet. The toilet tank connects to the toilet bowl and includes a water outlet connecting with the water outlet. The water outlet output the flow to the water inlet. The control valve is configured on the toilet tank to control the flow. The gesture sensor includes an image sensing unit and a processing unit. The image sensing unit captures at least a gesture image performed by the user. The processing unit is electrically connected to the image sensing unit. The processing unit sends at least a control command to the control valve according to the gesture image. The control command includes a first flush command or second flush command. The control valve can control the output amount of the flow as the first output amount according to the first flush command. On the other hand, the control valve can control the output amount of the flow as the second output amount according to the second flush command. The first output amount is larger than the second output amount. 
     The other embodiment in the present invention provides an apparatus having gesture sensor. The apparatus is a display apparatus which includes a display device and a gesture sensor. The gesture sensor includes an image sensing unit and a processing unit electrically connected thereto. The image sensing unit captures at least one gesture image performed by the user, and the processing unit sends at least one gesture control signal to the display device according to the gesture image so as to control the operation of the display device. 
     The other embodiment in the present invention provides an apparatus having gesture sensor. The apparatus is a satellite navigation apparatus which includes a display device, a controller and a gesture sensor. The controller establishes a signal link with the display device so as to allow map information and coordinate information to be transmitted to the display device. The processing unit is electrically connected to the image sensing unit and establishes a signal link with the controller. The processing unit may send at least one gesture control signal to the controller according to at least one gesture image, and the controller is used to control the display mode of map and coordinate information on the display device according to the gesture control signal. 
     The other embodiment in the present invention provides an apparatus having gesture sensor. The apparatus is a golf training apparatus which includes a practice device, an instructing device and a gesture sensor. The gesture sensor includes an image sensing unit and a processing unit. The image sensing unit is used to capture a user&#39;s side view when the user is practicing golf. The user&#39;s side view includes at least one hand image and at least one leg image. The hand and leg images form an angle. Both of the image sensing unit and the instructing device are electrically connected to the processing unit, and the processing unit is used to determine whether the angle falls within a predetermined range. When the angle falls out of the predetermined range, the processing unit sends an instructing signal to the instructing device to inform the user. 
     To sum up, the water supply, the water tap, and the toilet in the present invention control the flow by utilizing the gesture sensor and the control valve. Therefore, user can control the water supply, the water tap, and the toilet to provide the discharge or the output amount of the flow without touching the switch. 
     In order to further understand the instant disclosure, the following embodiments and illustrations are provided. However, the detailed description and drawings are merely illustrative of the disclosure, rather than limiting the scope being defined by the appended claims and equivalents thereof. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  is a schematic diagram of a water supply in accordance with one embodiment of the instant disclosure; 
         FIG. 1B  is a circuit block diagram of the water supply shown in  FIG. 1A ; 
         FIG. 1C  is a schematic diagram of the water supply shown in  FIG. 1A  in a shutoff condition; 
         FIG. 2A  is a cross-section view of a water tap in accordance with one embodiment of the instant disclosure; 
         FIG. 2B  is a schematic diagram of a display device in the view from the display panel shown in  FIG. 2A ; 
         FIG. 3  is a cross-section view of a water tap in accordance with the other embodiment of the instant disclosure; 
         FIG. 4A  is a perspective view of the toilet in accordance with one embodiment of the instant disclosure; 
         FIG. 4B  is a cross-section view of the toilet taken along the line I-I shown in  FIG. 4A ; 
         FIG. 4C  is a cross-section view of the display device taken along the line II-II shown in  FIG. 4B ; 
         FIG. 5A  is a cross-section view of the toilet in accordance with the other embodiment of the instant disclosure; 
         FIG. 5B  is a circuit block diagram of the toilet shown in  FIG. 5A ; 
         FIG. 6A  is a schematic diagram of a display apparatus in accordance with one embodiment of the instant disclosure; 
         FIG. 6B  is a circuit block diagram of the display apparatus shown in  FIG. 6A ; 
         FIG. 7A  is a schematic diagram of a satellite navigation apparatus in accordance with one embodiment of the instant disclosure; 
         FIG. 7B  is a circuit block diagram of the satellite navigation apparatus shown in  FIG. 7A ; 
         FIG. 8A  is a schematic diagram of a golf training apparatus in accordance with one embodiment of the instant disclosure; 
         FIG. 8B  shows a user&#39;s image captured by an image capturing unit shown in  FIG. 8A ; and 
         FIG. 8C  is a circuit block diagram of the satellite navigation apparatus shown in  FIG. 8A . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIG. 1A  is a schematic diagram of a water supply in accordance with one embodiment of the instant disclosure. Referring to  FIG. 1A , the water supply  100  can output a flow F 1 , and can be the water tap, the toilet, or the shower nozzle. The water supply  100  includes a body  110 , a gesture sensor  120 , and a control valve  130 . The control valve  130  is configured on the body  110  to control the flow F 1 . The control valve  130  can be the solenoid valve. The gesture sensor  120  can sense various gestures performed by the hand H 1  of the user and send the corresponding control commands to the control valve  130  according to the gestures. Thus, the control valve  130  can be controlled to release or stop the flow F 1 , or to change the discharge or output amount of the flow F 1 . 
     It worth noting that, the above mentioned output amount is the volume outputting from the water supply  100 . The calculating unit of the output amount can be the volume unit, such as liter, milliliter, or gallon, or weight unit, such as kilogram, gram, or pound. In addition, the amount of the output amount is determined by the period of the control valve  130  turned on to supply the flow F 1 . The longer the control valve  130  is turned on to supply the flow F 1 , the larger amount of the output amount is. On the contrary, the shorter the control valve  130  is turned on to supply the flow F 1 , the smaller amount of the output amount is. 
     The body  110  can store water and include a water outlet  112  and a space  114  to retain water. The water inside the space  114  can flow out from the water outlet  112 , so as to supply the flow F 1 . In addition, the body  110  shown in  FIG. 1A  includes a tank  118 , an output tube  116   a , and an input tube  116   b . The output tube  116   a  and the input tube  116   b  are configured on the tank  118 . The output tube  116   a  includes the water outlet  112 . The input tube  116   b  can guide the water into the space  114 . 
     The body  110  shown in  FIG. 1A  includes the tank  118 , the output tube  116   a  and the input tube  116   b . However, the body  110  can be just a tube without the tank  118  in other embodiment. The body  110  can have various types in different embodiments.  FIG. 1A  shows only one type of body  110  as example to illustrate. 
       FIG. 1B  is a circuit block diagram of the water supply shown in  FIG. 1A . Referring to  FIGS. 1A and 1B , the gesture sensor  120  includes a light source  121 , an image sensing unit  122 , and a processing unit  123 . The processing unit  123  is electrically connected to the light source  121  and the image sensing unit  122 . The light source  121  can emit the light E 1  to the hand H 1  of user. The light E 1  can be the visible light or the invisible light. The visible light can be the infrared ray. Moreover, the light source  121  can be the infrared light-emitting diode (Infrared LED). 
     The image sensing unit  122  is adjacent to the light source  121  and can capture the image, especially the dynamic image. The above mention dynamic image is formed by the reflection of the light E 1 . Thus, the image sensing unit  122  can capture the image formed by the invisible light, such as the image formed by the infrared ray. In addition, the image sensing unit  122  can be the complementary metal-oxide-semiconductor sensor (CMOS Sensor) or the charge-coupled device (CCD). 
     While the hand H 1  of the user perform several control gestures, such as making a fist, opening a palm, wave a hand, or turn the palm in the counterclockwise direction C 1  or the clockwise direction C 2  (as shown in  FIG. 1A ), the hand H 1  can reflect the light E 1  to be the light R 1 . The image sensing unit  122  can receive the light R 1 , and capture the image from the light R 1 . Thus, the image sensing unit  122  can capture various gesture images from the various control gestures performed by the hand H 1 . The gesture images are formed by reflecting the light E 1  (which is the light R 1 ). 
     It&#39;s worth noting that, in the present embodiment, the gesture sensor  120  includes the light source  121  to emit the light E 1 . However, in other embodiment, the gesture sensor  120  can be without the light source  121  and the image of the hand H 1  can be captured by the image sensing unit  122  directly. Specifically, the hand H 1  can reflect the external light, such as the light source from indoor or the sunlight from outdoor. The image sensing unit  122  can capture the image from the external light reflected by the hand H 1 . Similarly, the image sensing unit  122  can also capture various gesture images from the control gesture performed by the hand H 1 . Therefore, the above mentioned gesture image is not limited to be formed by the reflection of the light E 1  (which is light R 1 ). The above mentioned gesture image can also be formed by the external light source. 
     The processing unit  123  is electrically connected to the control valve  130  by the wire, or built up a signal link with the control valve  130  by the wireless technique, such as Bluetooth. The processing unit  123  sending several control command to the control valve  130  to command the control valve  130  release or stop the flow F 1  or change the discharge or the output amount of the flow F 1 . The processing unit  123 , such as the digital signal processor (DSP), can be able to judge whether there is the gesture image among various images captured by the image sensing unit  122  corresponding to the control command according to the algorithm, so as to recognize to these control gestures. 
     The processing unit  123  saves the recognition data. The algorithm utilized by the processing unit  123  to recognize the gestures can be the object recognition algorithm or the object tracking algorithm. While the processing unit  123  utilizes the object recognition algorithm, the processing unit  123  can judge whether there is the object among the images captured by the image sensing unit  122  shaped like the hand. The processing unit  123  can further judge whether the gesture of the object is one of the gesture image. While the processing unit  123  conforms that the gesture of the object is the same as one of the gesture images, the processing unit  123  can send the control command correspond to the gesture image to the control valve  130 , so as to control the control valve  130 . 
     While the processing unit  123  utilizes the object tracking algorithm, the processing unit  123  can judge whether the motion trace of the object among the successive images captured by the image sensing unit  122  is conform to one of the gesture images. The above-mentioned object can have a specific shape, such as the shape of the hand or the shape of the electronic device like mobile phone or the game console. While the processing unit  123  conform that the motion trace of the object is the same as one of the motion of the gesture images, the processing unit  123  can send a control command correspond to the gesture image to control the control valve  130 . 
     The control command sent by the processing unit  123  includes the first-discharge command or the second-discharge command. The control valve  130  changes the discharge of the flow F 1  as the first discharge according to the first-discharge command, and change the discharge of the flow F 1  as the second discharge according to the second-discharge command. The first discharge is larger than the second discharge. The processing unit  123  can command the control valve  130  to change the discharge of the flow F 1  according to the first-discharge command or the second-discharge command. 
     In the embodiment shown in  FIG. 1A , the gesture image correspond to the first-discharge command is the palm counterclockwise rotation (turn the hand H 1  in the counterclockwise direction C 1 ), and the gesture image correspond to the second-discharge command is the palm clockwise rotation (turn the hand H 1  in the clockwise direction C 2 ). Thus, while the user open the hand H 1  and perform the palm in the counterclockwise direction C 1 , the control valve  130  can adjust the discharge of the flow F 1  as the high discharge (first discharge). In contrast, while the user opens the hand H 1  and turns the palm in the clockwise direction C 2 , the control valve  130  can adjust the discharge of the flow F 1  as the low discharge (second discharge). Accordingly, the user can gain different discharge of the flow F 1  by turning the palm in the counterclockwise direction or clockwise direction. 
     In addition, in other embodiment, the control commands can includes the decrement command or the increment command. For instance, while the hand H 1  performs the gesture of the palm counterclockwise rotation, the processing unit  123  sends the increment command to command the control valve  130  to increase the discharge of the flow F 1 . In contrast, while the hand H 1  performs the gesture of the palm clockwise rotation, the processing unit  123  sends the decrement command to command the control valve  130  to decrease the discharge of the flow F 1 . Therefore, while the user want the large discharge of the flow F 1 , the hand H 1  of the user can perform one or successive gestures of the palm counterclockwise rotation. While the user want the small discharge of the flow F 1 , the hand H 1  of the user can perform one or successive gestures of the palm clockwise rotation. 
     The control commands can includes water supply command and the water outage command. The water supply command and the water outage command are corresponding to different kinds of gesture images. The water supply command is command the control valve  130  to supply the flow F 1 . The water outage command is command the control valve  130  to stop supply the flow F 1 . Specifically, while the control valve  130  starts up and the flow F 1  is not supplied, the hand H 1  can perform the control gesture corresponding to the water supply command in front of the gesture sensor  120 , so that the image sensing unit  122  can capture the gesture image. The processing unit  123  sends the water supply command to the control valve  130  according to the gesture image. At this moment, the control valve  130  open the water outlet  112  according to the water supply command to supply the flow F 1 . 
     While the flow F 1  is supplied and the user wants to stop the flow F 1 , the control gesture corresponding to the water outage command can be performed in front of the gesture sensor  120 , so that the image sensing unit  122  can capture the gesture image. The processing unit  123  can send a water outage command to the control valve  130  according to the gesture image. Meanwhile, the control valve  130  can shut off the water outlet  112  to stop supply the flow F 1  according to the water outage command. 
     The control commands can further includes a first water-output command or a second water-output command. The control valve  130  can change the output amount of the flow F 1  as the first output amount according to the first water-output command and as the second output amount according to the second water-output command. The first output amount is larger than the second output amount. Therefore, the processing unit  123  can command the control valve  130  to change the output amount of the flow according to the first water-output command or the second water-output command. Moreover, the processing unit  123  can setup the sustained time which the control valve supply the flow F 1  according to the first water-output command and the second water-output command, so as to change the output amount of the flow F 1 . 
     For instance, according to the first water-output command, the processing unit  123  can setup the control valve  130  to continuously supply the flow F 1  for 10 second. In addition, according to the second water-output command, the processing unit  123  can setup the control valve  130  to continuously supply the flow F 1  for 5 second. Thus, on the premise that the discharge of the flow F 1  doesn&#39;t change, the first output amount is larger than the second output amount, and the control valve  130  can supply different output amounts. 
     The water supply  100  further includes the display device  140 . The display device  140  is electrically connected to the processing unit  123 , or built up a signal link with the processing unit  123  by the wireless technique, such as Bluetooth. The display device  140  can display the condition of the water supply  100 , such as the open up condition or the shutdown condition of the water supply  100 . The open up condition means that the control valve  130  is switch on and be able to receive the command from the processing unit  123  to release or stop the flow F 1  or change the discharge or the output amount of the flow F 1 . Therefore, while the water supply  100  is in the open up condition, the control valve  130  can control the flow F 1  according to the control gesture performed by the user. 
     On the other hand, the shutdown condition means that the control valve  130  is switch off. While the water supply  100  is in the shutdown condition, the control valve  130  shut off the water outlet  112  and stop supplying the water until the control valve  130  receive the open up command from the processing unit  123 . The open up command corresponds to the gesture performed by the user. The image sensing unit  122  can capture the open up gesture image formed by the light R 1  or the external light among the open up gesture. The processing unit  123  can command the display device  140  to display the open up condition according to the open up gesture image and open up the control valve  130 . 
     While the water supply  100  is in the shutdown condition, the control valve  130  would not start up by the gesture of the user, unless the hand H 1  performs the open up gesture. Moreover, it&#39;s worth noting that, the open up command is different from the above-mentioned water supply command. The open up command is utilized to open up the control valve  130 , so that the control valve  130  can receive the command of the processing unit  123 . The water supply command is only utilized to command the control valve  130  to release the flow F 1 . Therefore, the open up command to start up the control valve  130  is different from the water supply command to release the flow F 1 . 
     In the embodiment shown in  FIG. 1A , the display device  140  can include the light-emitting components  142  and the indicator translucent panel  144 . The light-emitting components  142  can be such as the light-emitting diode (LED) or the cold cathode fluorescent lamp (CCFL). The indicator translucent panel  144  can be the light transmissive polymethylmethacrylate substrate (PMMA substrate) or the glass substrate. The indicator translucent panel  144  can display the corresponding gestures and the functions according to the various commands (such as the open up command, the first-discharge command, the second-discharge command, the water supply command, and the water outage command). 
     For instance, the surface of the indicator translucent panel  144  can show the letters or the patterns to represent the gesture of the counterclockwise rotation corresponding to the high discharge (first discharge) of the flow F 1 , and gesture of the clockwise rotation corresponding to the lower discharge (second discharge) of the flow F 1 . Therefore, the user can manipulate the water supply  100  according to the content shown in the display device  140 . Besides, in other embodiment, the display device  140  can be the liquid crystal display or the organic light-emitting diode display. Thus, the indicator translucent panel  144  can be omitted in the display device  140 . 
       FIG. 1C  is a schematic diagram of the water supply shown in  FIG. 1A  in a shutoff condition. Referring to  FIGS. 1A and 1C , in the present embodiment, while the water supply  100  is in the open up condition, the processing unit  123  can command the display device  140  to display the open up condition according to the open up gesture image. Meanwhile, the light-emitting components  142  emits light toward the indicator translucent panel  144 , so as to light up the indicator translucent panel  144 , as shown in  FIG. 1A . 
     In contrast, while the water supply  100  is in a shutdown condition, the processing unit  123  can command the display device  140  to display the shutdown condition according to the shutdown gesture image. The shutdown condition corresponds to the shutdown gesture image performed by the hand H 1 . The image sensing unit  122  can capture the shutdown gesture image formed by the light R 1  or external light from the shutdown gesture. The processing unit  123  can shut down the display device  140  according to the shutdown gesture image and send the shut down command to the control valve  130 . Thus, the display device  140  display the shutdown condition, and the light-emitting components  142  stop emitting light, as shown in  FIG. 1C . Then, the control valve  130  is in the shutdown condition. 
     In addition, in the present embodiment, the open up gesture image corresponding to the open up command can be opening the palm (as shown in  FIG. 1A ). The shutdown gesture image according to the shutdown command can be making a fist (as shown in  FIG. 1C ). Thus, the surface of the indicator translucent panel  144  can show the letters or the patterns to represent the gesture of opening the palm corresponding to the start up of the water supply  100  or the gesture of making a fist corresponding to the shutdown of the water supply  100 . 
     It&#39;s worth noting that, in the present embodiment, the control gesture of the first-discharge command and the second-discharge command are the palm counterclockwise rotation and the palm clockwise rotation respectively. The open up gesture corresponding to the open up command is opening the palm. The shutdown gesture corresponding to the shutdown command is making a fist. Nevertheless, in other embodiment, the first-discharge command and the second-discharge command can be corresponding to be other kinds of gesture rather than turning the palm in the counterclockwise direction and clockwise direction, such as wave the hand. In addition, the open up gesture and the shutdown gesture can be other gesture rather than opening the palm and making the fist. Therefore, the open up gesture, the shutdown gesture, and the control gestures mentioned above can be making the fist, opening the palm, waving the hand, turning the palm in the clockwise direction, turning the palm in the counterclockwise direction or the combination of other gestures at random. The present invention does not limit to the action of the open up gesture, the shutdown gesture, and the control gestures. 
     It&#39;s worth noting that, the water supply  100  can be the water tap or the toilet, and the gesture sensor  120  can apply on the water tap. Therefore, the following paragraph takes the  FIGS. 2A, 2B, and 3  as an illustration to detail description the embodiment which takes the water supply  100  as the water tap. In addition, the water tap in  FIGS. 2A, 2B, and 3  has the similar technique features as the water supply  100 . The same technique features of the water tap and the water supply  100  such as the method of gesture sensor recognizing the gesture is omitted thereof. 
       FIG. 2A  is a cross-section view of a water tap in accordance with one embodiment of the instant disclosure. Referring to  FIG. 2A , the water tap  200  includes the tap body  210 , the gesture sensor  120 , and the control valve  230 . The control valve  230  is configured on the tap body  210  to control the flow F 2  outputting from the tap body  210 . The gesture sensor  120  can control the control valve  230  according to the gesture performed by the hand H 1  of the user, so as to operate the water tap  200  according to the gesture performed by the hand H 1 . 
     The tap body  210  includes a water outlet  212  to provide the flow F 2 . The control valve  230  is configured on the tap body  210  to control the flow F 2 . The control valve  230  can be the solenoid valve. The gesture sensor  120  is atop of the water outlet  212 . The gesture sensor  120  includes the light source  121 , the image sensing unit  122 , and the processing unit  123 . In the present embodiment, the processing unit  123  can electrically connect to the control valve  230  by the wires W 1 . However, in other embodiment, the processing unit  123  can built up a signal link with the control valve  130  by the wireless technique, such as Bluetooth. The gesture sensor  120  can send the control command to control the control valve  230  by the wires W 1  or the wireless technique. 
     The light source  121  can send out the light E 1  to the hand H 1  of the user. After reflecting by the hand H 1 , the light E 1  can be the light R 1 . By utilizing the light E 1 , the image sensing unit  122  can capture various gesture images from the various control gestures performed by the hand H 1 . The control gestures includes making a fist, opening the palm, waving the hand, turning the palm in clockwise direction, turning the palm in the counterclockwise direction, or other kinds of gestures. The gesture image is formed by the reflection of the light E 1  (which is the light R 1 ). The processing unit  123  can send several control command to the control valve  230  according to the gesture images. Thus, the gesture sensor  120  can control the control valve  230  according to the gesture performed by the hand H 1 . Besides, the above-mentioned gesture images can also be formed by the external light reflected by the hand H 1 . 
     The control command can include the decrement command or the increment command. Specifically, the control valve  230  can decrease the discharge of the flow F 2  progressively according to the decrement command, and increase the discharge of the flow F 2  progressively according to the increment command. The decrement command and the increment command correspond to different control gestures respectively. For instance, in the embodiment shown in  FIG. 2A , the control gesture corresponding to the increment command can be turning the palm in the counterclockwise direction C 1 . The control gesture corresponding to the decrement command can be turning the palm in the clockwise direction C 2 . 
     As above mentioned, while the gesture sensor  120  senses the gesture of turning the palm in counterclockwise direction C 1  performed by the hand H 1 , the image sensing unit  122  can capture the gesture image (the palm counterclockwise rotation) by reflecting the light E 1  or the external light. The processing unit  123  can send the increment command to the control valve  230  according to the gesture image. After that, the control valve  230  can increase the discharge of the flow F 2  according to the increment command. 
     While the gesture sensor  120  sense the gesture of turning the palm in the clockwise direction C 2  performed by the hand H 1 , the image sensing unit  122  can capture gesture image (the palm clockwise rotation) by reflecting the light E 1  or the external light. The processing unit  123  can send the decrement command to the control valve  230  according to the gesture image. After that, the control valve  230  can decrease the discharge of the flow F 2  according to the decrement command. Thus it can be seen that the gesture sensor  120  can control the control valve  230  according to the palm counterclockwise rotation and the palm clockwise rotation, and further control the increasing or the decreasing discharge of the flow F 2 . 
     Moreover, similar to the above-mentioned water supply  100 , the control command can include the first-discharge command, the second-discharge command, the first water-output command, and the second water-output command. The first-discharge command, the second-discharge command, the first water-output command, and the second water-output command correspond to different control gestures respectively. The control gestures can be making the fist, opening the palm, waving the hand, and the combination of other gestures at random. The image sensing unit  122  can capture the gesture image from the gestures. The processing unit  123  can send the first-discharge command, the second-discharge command, the first water-output command and the second water-output command to the control valve  230  according to the gesture images. 
     The first-discharge command and the second-discharge command are utilized to change the discharge of the flow F 2  respectively. The first water-output command and the second water-output command are utilized to change the output amount of the flow F 2  respectively. Specifically, the control valve  230  can change the discharge of the flow F 1  as the first discharge according to the first-discharge command, and change the discharge of the flow F 1  as the second discharge according to the second-discharge command. The first discharge is larger than the second discharge. The control valve  230  can change the output amount of the flow F 1  as the first output according to the first water-output command, and change the output amount of the flow F 1  as the second output according to the second water-output command. The first output amount is larger than the second output amount. In addition, the control valve  230  can determined the first output amount and the second output amount by changing the duration of opening the flow F 2 . 
     In addition, similar to the above mentioned water supply  100 , the control command includes the water supply command or water outage command. The water supply command and the water outage command correspond to two of the gesture images respectively. The water supply command is utilized to command the control valve  230  to release the flow F 2 , and the water outage command is utilized to command the control valve  230  to stop the flow F 2 . The processing unit  123  can send the water supply command or the water outage command to the control valve  230  according to different gesture images. The control valve  230  can start up the water outlet  212  to release the flow F 2  according to the water supply command. In contrast, the control valve  230  can shut off the outlet  212  to stop releasing the flow F 2  according to the water outage command. 
     While the user wants the water tap  200  supplying the water to generate the flow F 2 , the user can perform the control gesture corresponding to the water supply command in front of the gesture sensor  120 . Then, the gesture sensor  120  can control the control valve  230  to release the flow F 2 . While the user wants to shut off the water tap  200  to stop the flow F 2 , the user can perform the control gesture corresponding to the water outage command in front of the gesture sensor  120 . Then, the gesture sensor  120  can control the control valve  230  to stop the flow F 2 . Therefore, the hand H 1  of the user can start up or shut off the water tap  200  by the gesture without touching the water tap  200 , so as to reduce the contact chance between the hand H 1  and the bacteria. Moreover, control gestures corresponding to the water supply command and the increment command can be the same, and the control gestures corresponding to the water outage command and the decrement command can be the same. 
     In the present embodiment, the gesture sensor  120  is configured on the tap body  210 , and atop of the water outlet  212 , as shown in  FIG. 2A . Referring to  FIG. 2A , the gesture sensor  120  on the top of the water outlet  212  is configured on the upper portion of the tap body  210  and uncovered by the tap body  210 . Thus, the user can find out the position of the gesture sensor  120  easily. In addition, the hand H 1  can perform several gestures in front of the tap body  210 , so as to operate the water tap  200  conveniently. 
     The water tap  200  can further include the display device  240 . The display device  240  can electrically connected to the processing unit  123 . In addition, the display device  240  can built up a signal link with the processing unit  123  by the wireless technique, such as Bluetooth. In the present embodiment, the structure of the display device  240  is similar to the structure of the above mentioned display device  140  essentially. That is to say, the display device  240  includes the light-emitting component (not shown in  FIG. 2A ) and the indicator translucent panel (not shown in  FIG. 2A ). Thus, the description about the structure of the display device  240  is omitted thereto. In addition, in other embodiment, the display device  240  can be the liquid crystal display or the organic light-emitting diode display, thus the display device  240  shown in  FIG. 2A  can be without the indicator translucent panel. 
     The display device  240  includes the display panel  242 . The display panel  242  can represent gestures and functions corresponding to various commands (such as the first-discharge command, the second-discharge command, the water supply command, and the water outage command) by showing the letters or the patterns. While the display device  240  includes the indicator translucent panel, and the indicator translucent panel includes the display panel  242 , the letters or the patterns can be shown on the display panel  242 . While the display device  240  is the liquid crystal display or the organic light-emitting diode display, the display panel  242  can show the scene containing the above mentioned letters or the patterns. 
       FIG. 2B  is a schematic diagram of a display device in the view from the display panel shown in  FIG. 2A . Referring to  FIGS. 2A and 2B , in the present embodiment, the display panel  242  can display the letters such as “waving the hand”, “making the fist”, “turning the palm in the clockwise direction”, and “turning the palm in the counterclockwise direction” to represent the gesture. In addition, the display panel  242  can also display the letter such as “start up”, “shut off”, “opening the water tap, increasing the discharge”, and “shutting off the water tap, decreasing the discharge” corresponding to the function of the gestures. 
     Thus, the user can figure out from the display panel  242  that the hand H 1  has to perform the gesture of waving hand when start up the water tap  200 . On the other hand, the hand H 1  has to perform the gesture of making a fist when shut off the water tap  200 . When open the water tap or increase the discharge of the flow F 2 , the hand H 1  has to perform the gesture of the counterclockwise rotation. When close the water tap or decrease the discharge of the flow F 2 , the hand H 1  has to perform the gesture of the palm clockwise rotation. 
     Moreover, the display device  240  can display the condition of the water tap  200 , such as displaying the water tap  200  is in the open up condition or in the shutdown condition. Similar to the above mention water supply  100 , the open up condition means that the control valve  230  is opening up, and is able to accept the control command (such as the first-discharge command, the first water-output command, and the water supply command) sent by the processing unit  123  to release or stop the flow F 2 , or to change the discharge or the output amount of the flow F 2 . 
     The shutdown condition means that the control valve  230  is shutting down. While the water tap  200  is in the shutdown condition, the control valve  230  can shut down the water outlet  212  and maintain the shutting down condition until the control valve  230  receive the open up command sent by the processing unit  123  to start up. The open up command corresponding to the open up gesture performed by the user, the image sensing unit  122  can capture the open up gesture image formed by the light R 1  or external light from the open up gesture. The processing unit  123  sends the open up command according to the open up gesture image to make the display device  140  to display the open up condition and start up the control valve  130 . 
     While the water tap  200  in the shutdown condition, the control valve  230  would not start up by gesture of the user, unless the hand H 1  performs the open up gesture. Moreover, the open up command is utilized to start up the control valve  230 , so that the control valve  230  can be controlled by the processing unit  123 . However, the water supply command is utilized to command the control valve  230  to release the flow F 2 . Thus, the above mentioned open up command is different from the water supply command. 
     Concerning about above mention shutdown condition, the image sensing unit  122  can capture the shutdown gesture image formed by reflecting the light E 1  or external light from the shutdown gesture performed by the hand H 1 . The processing unit  123  can shut off the display device  240 , such as making the light-emitting component of the display device  240  to stop emitting according to the shutdown gesture image. In addition, the processing unit  123  can send the shutdown command to the control valve  230  according to the shutdown gesture image, so as to make the control valve  230  in the shutdown condition. Moreover, the above mentioned open up gesture and the shutdown gesture can be making the fist, opening the palm, waving the hand, turning the palm in the clockwise direction, turning the palm in the counterclockwise direction, or the combination of other gestures at random. 
       FIG. 3  is a cross-section view of a water tap in accordance with the other embodiment of the instant disclosure. Referring to  FIG. 3 , the water tap  300  in the present embodiment is similar to the water tap  200  mentioned above. The description of the similar technique features of both the water tap  200  and  300  is omitted therefore. The difference between the water tap  200  and  300  is that the gesture sensor  120  of the water tap  300  is configured beneath the water outlet  212  and out of the flowing path of the flow F 2 , On the other hand, the tap body  210  covers the gesture sensor  120  as shown in  FIG. 3 . 
     Since the tap body  210  covers the gesture sensor  120 , the tap body  210  can shield off partial external light emit into the image sensing unit  122  of the gesture sensor  120 . The tap body  210  can decrease some of the background-light noise emitting into the image sensing unit  122 , so as to increase the sensing accuracy of the gesture sensor  120 . Therefore, the chance that the water tap  300  made the error owning to the influence of noise can be decreased. 
     In addition, in the present embodiment, the gesture sensor  120  can electrically connect to the control valve  230  and the display device  240  by wires W 2 , so that the processing unit  123  can send the command to the control valve  230  and the display device  240 . Nevertheless, in other embodiment, the processing unit  123  can built up a signal link with the control valve  230  and the display device  240  by the wireless technique, such as Bluetooth. Hence, the gesture sensor  120  can control the control valve  230  and the display device  240  by the wires W 2  or the wireless technique. 
     Expect for the water tap  200 , the water supply  100  can be the toilet. In other words, the gesture sensor  120  can be applied to the toilet.  FIG. 4A to 4C  and  FIGS. 5A and 5B  are taken as the example to detail illustrate the embodiment of taking the toilet as the water supply  100 . In addition, the toilet shown in  FIG. 4A to 4C  and  FIGS. 5A and 5B  are similar to the water supply  100 . The similar technique features of both the toilet and the water supply  100 , such as the method that the gesture sensor recognize the gesture is omitted thereof. 
       FIG. 4A  is a perspective view of the toilet in accordance with one embodiment of the instant disclosure.  FIG. 4B  is a cross-section view of the toilet taken along the line I-I shown in  FIG. 4A . Referring to  FIGS. 4A and 4B , the toilet  400  includes the toilet tank  410 , the gesture sensor  120 , the control valve  430  and the toilet bowl  450 . The toilet tank  410  provides the water to wash out the excrement and includes the water outlet  412 . The toilet bowl  450  connects to the toilet tank  410  and has the water inlet  452  and the opening  454 . The water inlet  452  connects to the water outlet  412 . The water outlet  412  can release the flow (not shown in  FIGS. 4A and 4B ) to the water inlet  452 . The water inside the toilet tank  410  can flow into the opening  454  through the water outlet  412  and the water inlet  452 . 
     The toilet tank  410  includes the front side  414   a  and the back side  414   b . The front side  414   a  is sited between the opening  454  and the back side  414   b . The gesture sensor  120  is configured on the top of the front side  414   a . Thus, while the user utilizes the toilet  400  to urinate, the user can perform the control gesture in front of the gesture sensor  120  to make the gesture sensor  120  sensing the control gesture. The control valve  430  is configured on the toilet tank  410  to control the flow. 
     The gesture sensor  120  can electrically connected to the control valve  430  by the wire, or built up a signal link with the control valve  430  by the wireless technique, such as Bluetooth. Thus, the gesture sensor  120  can send the command to the control valve  430  to control the control valve  430  to release or stop the flow. Moreover, in the present embodiment, the toilet tank  410  can be the water-storage tank. However, in other embodiment, the toilet  400  can be the toilet without the water-storage tank. The toilet tank  410  can thus be the water pipe. The toilet tank  410  is not limited to the water-storage tank. 
     The gesture sensor  120  includes the light source  121 , the image sensing unit  122  and the processing unit  123 . While the light source  121  emits the light E 1  to the hand H 1 , the image sensing unit  122  can capture various gesture images from various kinds of control gestures performed by the hand H 1 . The gesture images are formed by the light R 1  (the reflection light of the light E 1 ). The processing unit  123  can send the control command to the control valve  430  according to the gesture images. The control commands include the first flush command or the second flush command. In addition, the gesture sensor  120  can be without the light source  121 . The above mentioned gesture images can form by the external light reflected by the hand H 1 . 
     The control valve  430  can control the output amount of the flow as the first output amount according to the first flush command, and control the output amount of the flow as the second output amount according to the second flush command. The first output amount is larger than the second output amount. The control valve  430  can control the output amount of the flow by the duration of opening the flow. 
     Since the gesture sensor  120  is configured on the front side  414   a , the hand H 1  can perform the control gesture of the second flush command in front of the gesture sensor  120  while the user utilizes the toilet  400  to urinate. Therefore, the toilet  400  can release the flow with low output amount to save water. On the other hand, the hand H 1  can perform the control gesture of the first flush command in front of the gesture sensor  120  while the user utilizes the toilet  400  to empty the bowel, the hand H 1  can perform the control gesture according to the first flush command in front of the gesture sensor  120 . Thus, the toilet  400  can release the flow with high output amount to make sure that the excrement is wash out. In addition, the movement of the control gestures can be making the fist, opening the palm, waving the hand, turning the palm in the clockwise direction, turning the palm in the counterclockwise direction, or other gestures. 
     The toilet  400  can further includes the display device  440 . The display device  440  can indicate that the toilet  400  is in the open up condition or in the shutdown condition. The display device  440  can electrically connect to the processing unit  123 , or built up a signal link with the processing unit  123  by the wireless technique, such as Bluetooth. Thus, the processing unit  123  can send the command to the display device  440  to control the display device  440 . In addition, the processing unit  123  in the present embodiment can send the open up command or the shutdown command. The method to generate the open up command and the shutdown command is similar to the previous embodiment, and the description of the same is omitted thereto. 
       FIG. 4C  is a cross-section view of the display device taken along the line II-II shown in  FIG. 4B . Referring to  FIGS. 4B and 4C , the display device  440  includes the light-emitting components  442  and the indicator translucent panel  444 . The light-emitting components  442  can be the light emitting diode or the cold cathode fluorescent lamp. The indicator translucent panel  444  can be the light transmissive polymethylmethacrylate substrate or the glass substrate with the operation screen. The operation screen can display the gestures and functions correspond to various commands (such as the first flush command and the second flush command), and can show by the letters or the patterns. While the display device  440  show the operation screen, the light-emitting components  442  can emit the light toward the indicator translucent panel  444 , so as to light up the indicator translucent panel  444 . 
       FIG. 5A  is a cross-section view of the toilet in accordance with the other embodiment of the instant disclosure.  FIG. 5B  is a circuit block diagram of the toilet shown in  FIG. 5A . Referring to  FIGS. 5A and 5B , the toilet  500  in the present embodiment is similar to the toilet  400 , the similar technique features of both the toilet  400  and  500  is omitted therefore. However, there exist the different between the toilet  400  and  500 . The toilet  500  further includes the control unit  542 . 
     Specifically, the control unit  542  can be the processor and be electrically connected to the gesture sensor  120 . The control unit  542 , the display device  541  and the gesture sensor  120  can be integrated into the control panel  54  as shown in  FIG. 5A . Thus, the user can manipulate the control panel  54  by utilizing the gesture and control the control valve  430  to supply the flow with different output amounts. 
     In addition, the toilet  500  can include the heated seat  560 . The heat seat  560  is configured on the toilet bowl  450  and electrically connected to the control unit  542 . The image sensing unit  122  can capture temperature control gesture image from the temperature control gesture formed by the user. The processing unit  123  can send the command to the control unit  542  according to the temperature control gesture, so as to command the control unit  542  to control the temperature of the heated seat  560  according to the temperature control gesture image. The above mentioned temperature control gestures can be making the fist, opening the palm, waving the hand, turning the palm in the clockwise direction, turning the palm in the counterclockwise direction, and the combination of other gestures at random. 
     It&#39;s worth noting that, in other embodiment, the toilet  500  can further includes another gesture sensor  120 , the number of gesture sensor  120  included in the toilet  500  can be at least two. The extra gesture sensor  120  can be configured in the front side  414   a  of toilet tank  410  (referring to  FIG. 4B ). The seat cover of the toilet  500 , such as the heated seat  560 , can further configure the switch button (not shown in figure). 
     While the user utilizes the toilet  500  to urinate, the seat cover can be raised to trigger the switch button. Meanwhile, the switch button can switch on the gesture sensor  120  position on the toilet tank  410  and command the gesture sensor  120  of the control panel  54  to shut off or be in the idle condition. Thus, the user can perform the control gesture to the gesture sensor  120  in the front side correspond to the second flush command, so as to save the flush volume of the toilet  500 . 
     While the user utilizes the toilet  500  to empty the bowl, the seat cover can be putted on the toilet bowl  450  to trigger the switch button. Meanwhile, the switch button can start up the gesture sensor  120  of the control panel  54  and make the gesture sensor  120  of the toilet tank  410  to shut off or be in the idle condition. The user sitting on and utilizing the toilet  500  can perform the control gesture to the control panel  54  corresponding to the first flush command, so as to supply the flow with high output amount. Thus, the excrement can be flush out for sure. In addition, the gesture sensor  120  in  FIG. 5A  can be configured in the front side  414   a  of the toilet tank  410  (Referring to  FIG. 4B ). The toilet  400  and  500  shown in  FIG. 4A to 4C ,  FIGS. 5A and 5B  are only the example and not limited to the present invention. 
       FIG. 6A  is a schematic diagram of a display apparatus in accordance with one embodiment of the instant disclosure. Please refer to  FIG. 6A . The display apparatus  600  may be controlled without touching a switch or a remote control. That is, even if the user does not touch the switch or the remote control, the user still can control the display apparatus  600 . The display apparatus  600  may be used in the environment such as in kitchen, bathroom or hospital where it is not suitable or convenient for the user to control the display apparatus  600  by touching the switch or the remote control. For example, the display apparatus  600  may be a bathroom television, a kitchen television or a medical display apparatus. 
     The bathroom television is set in the bathroom and capable of operating in humid environment such as in bathroom. Compared to general television, the bathroom television has better waterproof and wet fastness properties. In one embodiment, the kitchen television for use in kitchen is capable of operating in higher temperature and high oil smoke environment. In addition, the medical display apparatus may be implemented in a treatment instrument or in a medical examination instrument for display information. For example, the medical display apparatus may be implemented in an endoscopy, a magnetic resonance imaging (MRI) instrument, a computed tomography (CT) or a helical tomotherapy treatment instrument for display. 
     In one embodiment, the bathroom television is taken as an example. In the kitchen, the user may be dealing with or cooking food ingredients so that the user inconveniently holds the remote control or touches the switch to control the kitchen television by hands stained with oil, water or food indigents (such as flour or raw meat). The display apparatus  600  in accordance with one embodiment of the instant disclosure may be controlled by the user without using any remote control or touching the switch. 
       FIG. 6B  is a circuit block diagram of the display apparatus shown in  FIG. 6A . Please refer to  FIG. 6A  and  FIG. 6B . The display apparatus  600  includes a display unit  610  and a gesture sensor  120 . The display unit  610  may receive channel signals and show corresponding images. The display unit  610  may be a television such as a liquid crystal television, a plasma television, an organic light emitting television or cathode ray tube television (CRT TV). In addition, the aforementioned channel signals include audio signals and video signals. 
     The gesture sensor  120  may control the display unit  610 . By using the gesture sensor  120 , the user can control the television, i.e., the display unit  610  without touching the television. Specifically, the display unit  610  may include a controller  620  and a display device  640  electrically connected thereto. The controller  620  may include a motherboard and electronic components disposed thereon. The display device  640  having a pixel array can show image. The display device  640  for example is a liquid crystal module (LCM), an organic light emitting diode panel or a plasma display panel. 
     A signal link is established between the gesture sensor  120  and the display unit  610 . For example, the processing unit  123  of the gesture sensor  120  may be electrically connected to the controller  620  of the display unit  610  through wires or a printed circuit board. Alternatively, both of the processing unit  123  and the controller  620  have a wireless receiving/transmitting module, and the communication between the processing unit  123  and the controller  620  can be established through their wireless receiving/transmitting modules. The wireless receiving/transmitting module may be for example an infrared signal receiving/transmitting module or a Bluetooth receiving/transmitting module. 
     Accordingly, the gesture sensor  120  is capable of detecting the various gestures performed by the user&#39;s hand H 1  and transmits the corresponding control commands to the controller  620  according to the gestures. Thus, the controller  620  can control the display device  640  according to the control commands. The methods performed by the gesture sensor  120  to reorganize the gestures are described comprehensively in the abovementioned embodiments and omitted herein. 
     While a control gesture such as fist, palm, hand wave, or palm motion along the counterclockwise direction C 1  or the clockwise direction C 2  is performed by the user with the hand H 1 , the hand H 1  can reflect the light E 1  to be the light R 1 . The image sensing unit  122  can receive the light R 1  and capture the image from the light R 1 . As such, the image sensing unit  122  can capture gesture images from the various control gestures performed by the user with the hand H 1 . The gesture images are formed due to the reflection of the light E 1 , i.e., the light R 1 . 
     It&#39;s worth noting that in the present embodiment, the gesture sensor  120  includes the light source  121  to emit the light E 1 . However, in other embodiment, it is not necessary for the gesture sensor  120  to include the light source  121 , and the image of the hand H 1  can be captured by the image sensing unit  122  directly. Specifically, the hand H 1  can reflect the external light, which, for example, comes from the indoor light or the outdoor sunlight. The image sensing unit  122  can capture the image from the external light reflected by the hand H 1 . Similarly, the image sensing unit  122  can also capture various gesture images from the control gestures performed by the user with the hand H 1 . Therefore, the above mentioned gesture image is not limited to be formed by the reflection of the light E 1  (which is light R 1 ). The above mentioned gesture image can also be formed by the external light source. 
     The processing unit  123  may send a gesture control signal including different commands. In one embodiment, the gesture control signal may include a turn-on command and a turn-off command which are respectively corresponding to different gesture images. The controller  620  decides to switch the display device  640  on according to the turn-on command, and to switch the display device  640  off according to the turn-off command. Specifically, the controller  620  has a switching module (not shown in  FIG. 6B ), and the controller  620  controls whether the power is supplied to the display device  640  through the switching module. 
     When the display unit  610  is in switch-off state (e.g. the display apparatus  600  may be supplied with power of an external power source, but the display device  640  may be not supplied with power), the user can perform a control gesture which is corresponding to the turn-on command ahead of the gesture sensor  120 . The image sensing unit  122  can capture the control gesture image, and transmit the control gesture image to the processing unit  123 . The processing unit  123  can transmit the turn-on command to the controller  620  according to the control gesture image so that the display device  640  can be supplied with power and be switched on. 
     When the display unit  610  is in switch-on state (e.g. the display apparatus  600  is displaying image), the user can perform the control gesture corresponding to the turn-off command with hand H 1 . Meanwhile, the processing unit  123  sends a turn-off command to the controller  620  according to the control gesture image captured by the image sensing unit  122  to turn off the display unit  610 . 
     In another embodiment, the gesture control signal sent by the processing unit  123  may include a channel switching command. The controller  620  can switch the channel received by the display unit  610  according to the channel switching command. The channel switching command is for example a channel scan up command, a channel scan down command or a channel selection command. These channel switching commands are respectively corresponding to different control gestures. For example, the hand H 1  gesture of the open palm facing to the image sensing unit  122  and moving up is corresponding to the channel scan up command, and the hand H 1  gestures of the open palm facing to the image sensing unit  122  and moving down is corresponding to the channel scan down command. If the user performs a finger gesture which indicates a set of numbers, the finger gesture is corresponding to the channel selection command and the set of numbers is corresponding to the channel number. 
     Namely, the controller  620  can scan the channel received by the display unit  610  up in sequence according to the channel scan up command, and scan the channel down in sequence according to the channel scan down command. Specifically, the controller  620  includes a receiving module (not shown in  FIG. 6B ). When the user performs the gesture corresponding to the channel switching command, the processing unit  123  transmits the channel switching command to the controller  620  so as to control the receiving module to switch current channel to other channel. 
     In another embodiment, the gesture control signal may include a volume command. The processing unit  123  transmits the volume command to the controller  620  so as to adjust the value of the volume displayed by the display unit  610 . The volume command is for example an increasing volume command or a decreasing volume command, which are respectively corresponding to different control gestures. For instance, the hand H 1  gesture of palm rotating in clockwise direction is corresponding to the increasing volume command, whereas the hand H 1  gesture of open palm rotating in counterclockwise direction is corresponding to the decreasing volume command. The processing unit  123  recognizes the user&#39;s gesture motion and controls the controller  620  to execute the corresponding volume commands displayed by the display unit  610 . Specifically, the display unit  610  includes a speaker  630  which is electrically connected to the controller  620 . When the controller  620  receives the volume command from the processing unit  123 , the controller  620  is capable of adjusting the volume through controlling the speaker  630 . 
     In the abovementioned embodiment, a link between the processing unit  123  and the controller  620  is always maintained. However, in another embodiment, the link between the processing unit  123  and the controller  620  is terminated until a startup gesture is captured by the image sensing unit  122 . When a termination gesture is captured by the image sensing unit  122 , the link between the processing unit  123  and the controller  620  would be interrupted. 
     That is to say, before the signal link between the processing unit  123  and controller  620  is established, the display apparatus  600  would not work even if the user performs the control gestures in front of the display apparatus  600 . However, the general methods, such as touching the display apparatus  600  or using the remote control, still can be performed by the user to operate the display apparatus  600 . Specifically, while the user wants to perform the operation of the display apparatus  600 , the user firstly has to perform the startup gesture. The image sensing unit  122  captures a startup gesture image, and the processing unit  123  transmits a startup command to the controller  620  according to the startup gesture image. As such, the link between the processing unit  123  and the controller  620  can be established. In addition, in one embodiment, the user can performs the termination gesture when the user wants to perform the operation of the display apparatus  600  by the general methods. The image sensing unit  122  captures a termination gesture image, and the processing unit  123  receives the termination gesture image and then, terminates the link between the processing unit  123  and the controller  620 . 
     The display apparatus  600  may further includes an indicating element  650 . The signal link between the indicating element  650  and the processing unit  123  is established through a wire or wireless communication network, such as through Bluetooth communication. The indicating element  650  may indicate the link state between the controller  620  and the processing unit  123 . That is, when the image sensing unit  122  captures the startup gesture image performed by the user, the processing unit  123  connects with the controller  620  according to the startup gesture image and controls the indicating element  650  to indicate the startup state. When the image sensing unit  122  captures the termination gesture image performed by the user, the processing unit  123  disconnects with the controller  620  and controls the indicating element  650  to indicate the disconnected state. 
     In the embodiment shown in  FIG. 6 , the indicating element  650  may include an indicating light, such as a light-emitting diode (LED) or a cold cathode fluorescent lamp (CCFL). For instance, when the link between the processing unit  123  and the controller  620  is established, the indicating light is turned on to indicate the startup state. When the link between the processing unit  123  and the controller  620  is terminated, the indicating light is turned off to indicate the disconnected state. 
     In addition, in another embodiment, the aforementioned commands, such as the startup command, the link termination command, the channel switching command, the volume command, the turn-on command and the turn-off command, and the gestures respectively corresponding thereto can be displayed on the display device  640  through the on-screen display techniques so as to instruct the user to operate the display apparatus  600  by performing the gesture. 
     For example, the display device  640  may display a text and/or pattern to indicate that the palm rotating in clockwise direction is corresponding to adjust the volume louder, and the palm rotating in counterclockwise is corresponding to adjust the volume lower. As such, the user can operate the display apparatus  600  according to the instruction shown on the display device  640 . 
     Furthermore, in the instant embodiment, the startup gesture image corresponding to the startup command may be opening the palm, and the termination gesture corresponding to the link termination command may be making a fist. The text and/or pattern may be illustrated on the housing of the display device  640  to instruct that opening the palm to start the gesture operation, and making a fist to terminate the gesture operation. It has to be explain that the abovementioned startup gesture, the termination gesture, turn-on gesture, turn-off gesture and channel switching gesture may be making a fist, opening a palm, wave a hand, rotating the palm in clockwise direction, rotating the palm in counterclockwise direction, or the other gestures. The aforementioned examples of the control gestures and the functions corresponding thereto do not intend to limit the instant embodiment. 
     Notably, the display apparatus may be a satellite navigation apparatus. The embodiment of the satellite navigation apparatus would be explained in detail in the following descriptions with an assistance of  FIG. 7A  and  FIG. 7B . In addition, the features in the satellite navigation apparatus as shown in  FIG. 7A  and  FIG. 7B  similar to the aforementioned embodiment are not described below in principle. For example, the method for recognizing the gesture by gesture sensor would not be repeated hereinafter. 
       FIG. 7A  is a schematic diagram of a satellite navigation apparatus in accordance with one embodiment of the instant disclosure.  FIG. 7B  is a circuit block diagram of the satellite navigation apparatus shown in  FIG. 7A . In the instant embodiment, the satellite navigation apparatus  700  includes a display device  710 , a controller  720  and a gesture sensor  120 . 
     The display device  710  has a pixel structure including a plurality of pixels for displaying images. The display device  710  is for example a liquid crystal module (LCM), an OLED display panel or a plasma display panel. 
     The controller  720  may be configured in the inside or outside of the display device  710 , and a signal link between the controller  720  and the display device  710  is established so that map information and coordinate information can be transmitted to and displayed on the display device  710 . Please refer to  FIG. 7B , the controller  720  includes a position receiving module  721 , a database  722  and a signal processing unit  723 . The database  722  is used to store at least one map information, and the position receiving module  721  may be a global positioning system (GPS) receiver for receiving at least one satellite signal. 
     The signal processing unit  723  electrically connects with the position receiving module  721 , the database  722  and the display device  710 . Furthermore, the signal processing unit  723  is used to receive and process the satellite signal transmitted by the position receiving module  721 . The satellite signal is converted to coordinate information, which usually indicates the position where the satellite navigation apparatus  700  is located. As the satellite navigation apparatus  700  is being moved with a car driven by the user, the satellite signal is continuously received by the position receiving module  721  and transmitted to the signal processing unit  723  to renew the coordinate information. In addition, the signal processing unit  723  retrieves the map information and transmits the map information to the display device  710  in conjunction with the coordinate information for displaying. 
     After the user input a target address, the signal processing unit  723  receives an input data and calculates target coordinate information associated with the target address. Furthermore, the signal processing unit  723  is capable of calculating at least one path information according the target coordinate information, the coordinate information and the map information. The path information includes a plurality of the coordinate points, the connecting line of which is a path extending form the user&#39;s position to the target address. 
     The signal processing unit  723  is capable of controlling the display device  710  to display the map information, the coordinate information and path information. In one embodiment, the display device  710  may be controlled by the signal processing unit  723  to display the map information, the coordinate information and path information in different modes for example 2D, 3D or mixed display mode. The switching between different modes (2D, 3D or mixed display mode) can be performed according to the user&#39;s instruction. 
     That is to say, the map information, the coordinate information and the path information can be displayed in different modes on the display device  710 . In the embodiment of the instant disclosure, the gesture sensor  120  controls the controller  720  according to the user&#39;s hand gesture so that the display device  710  can control the display mode of the map information, the coordinate information and the path information according to the gesture performed by the user&#39;s hand H 1 . The detail descriptions are explained as below. 
     Please refer to  FIG. 7A  and  FIG. 7B . In the instant embodiment, the gesture sensor  120  includes a light source  121 , an image sensing unit  122  and a processing unit  123 . The processing unit  123  can be electrically connected to the signal processing unit  723  of the controller  720  through wire communication technique. In another embodiment, the processing unit  123  may establish a signal link with the controller  720  through wireless communication technique, such as Bluetooth. By using wire or wireless communication technique, the gesture sensor  120  is capable of sending the gesture control signal to command the controller  720 . 
     The light source  121  can emit the light E 1  to the hand H 1  of the user. The hand H 1  can reflect the light E 1  to be the light R 1 . By utilizing the light E 1 , the image sensing unit  122  can capture various gesture images from the various control gestures performed by the hand H 1 . The control gestures includes making a fist, opening the palm, waving the hand, rotating the palm in clockwise direction, rotating the palm in the counterclockwise direction, or other kinds of gestures. The gesture image is formed due to the reflection of the light E 1 , i.e., the light R 1 . 
     The processing unit  123  can send several gesture control signals to the signal processing unit  723  of the controller  720  according to the gesture images. The signal processing unit  723  of the controller  720  may switch the display mode of the map information and coordinate information on the display device  710  according to the gesture control signal. 
     Specifically, the gesture control signal may include a first switching command for switching the 2D display mode to 3D display mode and a second switching command for switching a stereoscopic map (the 3D display mode) to a planimetric map (the 2D display mode). The first switching command and the second switching command are respectively corresponding to different gestures. For example, the first switching command is corresponding to a two-fingered gesture, and the second switching command is corresponding to a three-fingered gesture. When the processing unit  123  recognizes the gesture corresponding to the first switching command, the processing unit  123  transmits the first switching command to the controller  720  so as to switch the display mode to 2D display mode for displaying the planimetric map. When the processing unit  123  recognizes the gestures corresponding to the second switching command, the processing unit  123  transmits the second switching command to the controller  720  so as to switch the display mode to 3D display mode for display the stereoscopic map. 
     In addition, the gesture control signal may include a zoom-in command, a zoom-out command, a panning command and a scrolling command, which are respectively corresponding to different control gestures. For example, the zoom-in command is corresponding to the gesture of moving the finger away from the thumb, and the zoom-out command is corresponding to the gesture of moving the finger toward the thumb. The image sensing unit  122  captures the gesture image of the user, and the processing unit  123  transmits the gesture control signal to the controller  720  so as to control the scale of map information displayed on the display device  710  to be enlarged or diminished. 
     Furthermore, the user may control the satellite navigation apparatus  700  to be switched on or off through the gestures. Specifically, the user can perform a switch-on gesture and a switch-off gesture so as to control the satellite navigation apparatus  700 . The switch-on gesture is for example opening and closing palm repeated three times and maintained in open-palm state at the last time for three seconds. The switch-off gesture is for example closing and opening palm repeated three times and maintained in closed fist state for three seconds. When the image sensing unit  122  captures the switch-on gesture, the processing unit  123  sends a switch-on command to the controller  720  so that the controller  720  control the display device  710  to be turned on according to the switch-on command. When the image sensing unit  122  captures the switch-off gesture, the processing unit  123  sends a switch-off command to the controller  720  so that the controller  720  control the display device  710  to be turned off according to the switch-off command. 
     The satellite navigation apparatus  700  of the instant embodiment may include a microphone  701  electrically connected to the controller  720 . When the microphone  701  is turned on, the user can input the target address through the microphone  701 . The controller  720  receives the data inputted by the user and calculates target coordinate information associated with the target address. In the instant embodiment of the present disclosure, the user can perform a gesture to turn on the microphone  701  so that the target address can be inputted by the user&#39; voice. 
     Specifically, the image sensing unit  122  captures the control gesture image, and the processing unit  123  transmits a voice input command or an end command to the controller  720 . That is to say, the gesture control signal sent out from the processing unit  123  may include the voice input command or the end command. In the instant embodiment, the voice input command and end command are respectively corresponding to different control gestures. When the controller  720  receives the voice input command transmitted by the processing unit  123 , the controller  720  controls the microphone  701  to be turned on for receiving the user&#39;s voice message according to the voice input command. When the controller  720  receives the end command transmitted by the processing unit  123 , the controller  720  controls the microphone  701  to be turned off according to the end command. It is worth nothing that, in the instant embodiment, the user inputs the target address through the microphone  701 , which does not intend to limit the instant disclosure, and the other means for inputting the target address can be taken by the user, such as through a touch panel. 
     In another embodiment, the satellite navigation apparatus  700  may include a speaker  702  for playing sound. The speaker  702  is electrically connected to the controller  720 . In addition, the speaker  702  and the microphone  701  may be two independent devices or be incorporated into one voice receiving/playing module. In the instant embodiment, the user can controls the execution or termination of the voice guiding function by performing the gestures. 
     Specifically, when the image sensing unit  122  captures a voice guide executing gesture performed by the user, the processing unit  123  transmits a voice guide executing command to the controller  720 . The controller  720  converts the path information into sound signal, and controls the speaker  720  to play the voice according to the sound signal. As such, the user can be guided by the voice and drive according to the path information. When the image sensing unit  122  captures a voice guide terminating gesture performed by the user, the processing unit  123  transmits a voice guide terminating command to the controller  720 . The controller  720  terminates the transmission of the sound signal and the speaker  702  stop to play. That is to say, the gesture control signal transmitted by the processing unit  123  may include the voice guide executing and terminating commands, which are respectively corresponding to different gestures. 
     The satellite navigation apparatus  700  of the instant embodiment also includes an indicating element  740 . The indicating element  740  may be an indicating light electrically connected to the processing unit  123  or established a signal link with the processing unit  123  by the wireless technique, such as Bluetooth. The indicating element  740  may be used to indicate the link state between the controller  720  and the processing unit  123 . That is, when the image sensing unit  122  captures the startup gesture performed by the user, the processing unit  123  establishes a signal link with the controller  720  according to the startup gesture image, and controls the indicating element  720  to indicate the startup state. 
     In one embodiment, when the image sensing unit  122  captures a startup gesture image performed by the user, the processing unit  123  establishes the signal link with the controller  720 . That is, before the signal link between the processing unit  123  and the controller  720  is established, the satellite navigation apparatus  700  does not work even if the user performs the control gestures in front of the display apparatus  600 . However, the user can operate the satellite navigation apparatus through the other means. 
     When the user wants to terminate the gesture operation of the satellite navigation apparatus  700 , the user can performs a termination gesture. When the image sensing unit  122  captures a termination gesture image, the processing unit  123  terminates the signal link between the processing unit  123  and the controller  720 , and controls the indicating member  740  to be turned off. 
     In the instant embodiment, the aforementioned commands, such as the startup command, the zoom-in command, the zoom-out command, the voice input command, the link termination command and so on, and the gestures respectively corresponding thereto can be displayed on the display device  710  through the on-screen display techniques so as to instruct the user to operate the satellite navigation apparatus  700  by performing the gesture. Accordingly, while the user is driving the car, the user can control some operations of the satellite navigation apparatus, such as inputting address, enlarging or reducing the map, executing the voice guide and so on. 
     The apparatus having gesture sensor in one embodiment of the instant disclosure may be a golf training apparatus. In the instant embodiment, the golf training apparatus would be described in connection with  FIG. 8A ,  FIG. 8B  and  FIG. 8C  in detail below.  FIG. 8A  is a schematic diagram of a golf training apparatus in accordance with one embodiment of the instant disclosure.  FIG. 8B  shows a user&#39;s image captured by an image capturing unit shown in  FIG. 8A , and  FIG. 8C  is a circuit block diagram of the satellite navigation apparatus shown in  FIG. 8A . The golf training apparatus may be used to detect the user&#39;s pose through the gesture sensor so that the user&#39;s pose can be corrected. 
     The golf training apparatus  800  includes a practice device  810 , the gesture sensor  820  and the instructing device  830 . The gesture sensor  820  establishes a signal link with the instructing device  830 . 
     The practice device  810  may include a fairway  811  and a ball  812 . The fairway  811  is designed according to the simulation of the golf course. The user can practice swing or putting to hit the ball  812  placed on the fairway  811 . The fairway  811  may be a swing practice mat or a putting practice mat.  FIG. 8A  shows the user standing on the fairway  811  holds the golf club with a hand H 2  and aims the ball  812  to make a swing practice. During swing, the hand H 2  may move along a trace T. As the ball  812  is impacted by the golf club, the user&#39;s hand H 2  is located just at the lowest position of the trace T. For the user who is practicing swing or putting, whether the posture of the user at moment of impact is correct would significantly affect the result of the impact. 
     Please refer to  FIG. 8B , the gesture sensor  820  includes an image sensing unit  821  and a processing unit  823 . Both of the processing unit  823  and the processing unit  823  establish a signal link with the instructing device  830 . As the user starts to practice, the image sensing unit  821  captures at least one user&#39;s image. The user&#39;s image captured when the user&#39;s hand is located at the lowest position of the trace T. The user&#39;s image may show the side view of the user which includes at least one hand image and at least one leg image. The hand image may include a fist image and an arm image, and the leg image may include a thigh image and a calf image. 
     The gesture sensor  820  may further include a light source  825  which is utilized to emit a light toward the user and electrically connected to the processing unit  823 . The image sensing unit  821  is located adjacent to the light source  825 , and the user&#39;s image is formed due to the reflection of the light. In one embodiment, the light is invisible light, however, in another embodiment, the light may be sunlight or emitted from an indoor lamp. 
     The processing unit  823  receives the user&#39;s image and recognizes the hand image and leg image to proceed with the analysis. Specifically, the processing unit  823  defines a fist axial line L 1  form the hand image, and defines a second axial line L 2  form the leg image. The first axial line L 1  and the second axial line L 2  form an angle θ. The angle θ is corresponding to the angle formed by user&#39;s arm and user&#39;s leg as the ball  812  is impacted. 
     The processing unit  823  may store at least one reference angle which is associated with a correct swing posture, and the reference angle has a predetermined range. In another embodiment, the processing unit  823  may store many different reference angles which have different ranges and respectively corresponding to different conditions. For example, the reference angle has the predetermined range from 10 to 170 degree corresponding to the swing practice, and another reference angle has another predetermined range from 2 to 85 degree corresponding to the putting practice. In addition, the predetermined range may be set according to the user&#39;s height or the types of the golf club used by the user during practice. 
     In one embodiment, the gesture sensor  820  may further include a display module  824 , which may be a liquid crystal display module or a touch panel display module. The processing unit  823  may control the display module  824  to show the conditions, such as height, the type of the golf club, the type of practice and so on, so that the user can select the appropriate conditions. In one embodiment, before the user starts to practice, the user can perform the gesture to select the conditions. For example, the display module  824  shows two practice options, such as swing practice and putting practice, which are respectively corresponding to different gestures. For instance, selecting the swing practice is corresponding to a one-figure gesture, and selecting the putting practice is corresponding to a two-finger gesture. The image sensing unit  821  captures the gesture performed by the user, and transmits to the processing unit  823 . The processing unit  823  recognizes the gesture image to determine the conditions selected by the user, and calculates the predetermined range of the reference angle which satisfies the requirements of the conditions. After the predetermined range of the reference angle is calculated, the processing unit  823  determines whether the measured angle θ falls within the predetermined range. When the measured angle θ falls out of the predetermined range, the processing unit  823  sends an instructing signal to the instructing device  830  to remind the user to correct his posture. 
     The instructing device  830  may be one or more indicating lamps and/or a speaker. The indicating lamps may be LED lamps having one or more different colors to indicate the measured results. In another example, the indicating lamps are used to display the reminding message with the instruction for correcting the user&#39;s posture. Specifically, if the measured angle θ falls within the predetermined range, which represents the user&#39;s posture is correct during impacting the ball  812 , the indicating lamps would emit green light. If the measured angle θ falls out of the predetermined range, which indicates the user&#39;s posture is wrong during impacting ball  812 , the indicating lamps would emit red light. In addition, the speaker may play many kinds of indicating sounds associated with the measured results. For example, the indicating sounds may be vocal sounds so as to instruct the user on how to adjust the posture by vocal, or may be a part of music for reminding the user. 
     In another embodiment, the golf training apparatus  800  may be used to measure the swing velocity as the golf club impacts the ball  812 . Specifically, the image sensing unit  821  may capture a plurality of the sequential user&#39;s images at different times and transmit to the processing unit  823 . Each of the sequential user&#39;s images may shows the side view of the user and include at least one hand image. At least one of the sequential user&#39;s images is captured when the user&#39;s hand H 2  is located at the lowest position of the trace T. 
     The processing unit  823  receives the sequential user&#39;s images and recognizes the hand image. The processing unit  823  is capable of calculating the relative distance between the user&#39;s hand H 2  and the gesture sensor  820  according to an occupied area of the hand image in the user&#39;s image. Specifically, the processing unit  823  may further include a database for storing a reference table. The relationship between the occupied area of the hand image and the relative distance would be listed in the reference table. Accordingly, after the processing unit  823  recognizes the hand image and calculates the occupied area of the hand image in the user&#39;s image, the relative distances between the user&#39;s hand H 2  and the gesture sensor  820  at different times can be acquired according to the reference table. The processing unit  823  is capable of calculating the swing velocity of the user according to the variation of the occupied area of the hand image with the time change. Especially when the user&#39;s hand H 2  moves along the trace T to the lowest position of the trace, the instantaneous velocity of the user&#39;s hand H 2  can be calculated. 
     The database of the processing unit  823  may store a velocity range. The processing unit  823  analyzes the swing velocity according to the sequential user&#39;s image and determines whether the swing velocity falls within the velocity range. When the swing velocity falls out of the velocity range, the processing unit  823  transmits the instructing signal to the instructing device  830  to inform the user. 
     In addition, because the swing velocity in swing practice is different from that in putting practice, the database of the processing unit  823  may store several sets of the velocity ranges which are respectively corresponding to different conditions. Before starting to the golf practice, the user can set the types of practice, and the processing unit  823  would select the appropriate velocity range according to the user&#39;s selection. 
     To sum up, the above mention water supply, water tap and the toilet of the embodiment in the present invention utilize the gesture sensor and the control valve to control flow. The user can perform various gestures to the gesture sensor to control the control valve. Hence, the user can control the water supply, the water tap, and the toilet to supply different discharges or output amount of flow by utilizing the gesture sensor without touching the switch button. In addition, the display apparatus of the embodiments in the instant disclosure utilize the gesture sensor and the controller to control the operation. As such, even if in the kitchen or in the bathroom, the user can control the display apparatus without directly touching the display apparatus. The golf training apparatus of the embodiment in the instant disclosure utilize the gesture sensor so that the swing posture of the user can be adjusted. 
     The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.