Abstract:
A control system for a display includes a number of motion sensors and a processor. The sensors detect objects and movement thereto and issue signals accordingly, the processor controlling the display to turn off after a set period without movement, and turn on again according to the detection of further movement, to save unnecessary display power.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure relates to a control system for a display. 
         [0003]    2. Description of Related Art 
         [0004]    Display equipment, such as a television, has been popular for decades. Sometimes, a user may leave for a certain time, such as half an hour, and then come back to watch the television. During the time of absence, the display equipment is still operating all the time, which waste energy. 
         [0005]    Therefore, there is room for improvement in the art. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    Many aspects of the present disclosure can be better understood with reference to the following drawing(s). The components in the drawing(s) are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawing(s), like reference numerals designate corresponding parts throughout the several views. 
           [0007]      FIG. 1  is a block diagram of an embodiment of a control system for a display, of the present disclosure, wherein the control system includes a processor. 
           [0008]      FIG. 2  is a block diagram of the processor of  FIG. 1 . 
           [0009]      FIG. 3  is an isometric view of the control system of  FIG. 1 . 
           [0010]      FIG. 4  is a flow chart of an embodiment of a control method for a display, of the present disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0011]      FIG. 1  illustrates an embodiment of a control system for a display  10  (shown in  FIG. 3 ) of the present disclosure. The control system includes a plurality of motion sensors  30  arranged on the display  10 , a processor  20 , and a control circuit  40 . 
         [0012]    In the embodiment, the motion sensors  30  are ultrasonic probes  30 . The ultrasonic probes  30  detect objects in front of the display  10 , such as human beings, and output signals in relation to a movement of each object in front of the display  10 . 
         [0013]    The control circuit  40  controls the display  10  to turn on or turn off. When the display  10  is turned off, a part of electronic elements in the display  10  may stop operating, but the other parts of electronic elements, controlling the display  10  to turn on again, are still operating. 
         [0014]      FIG. 2  shows that the processor  20  includes a processing unit  200 , a determination unit  201 , an output unit  202 , and a storage unit  203 . 
         [0015]    The processing unit  200  receives the signals from the ultrasonic probes  30 , and transmits the signals to the determination unit  201 . 
         [0016]    The storage unit  203  stores a first and a second predetermined time. 
         [0017]    The determination unit  201  determines whether any movement in front of the display  10  is detected within the first predetermined time. If no movement is detected after the first predetermined time has elapsed, it indicates that there is no person in front of the display. The determination unit  201  then outputs a first control signal to the control circuit  40  through the output unit  202 , to control the display  10  to turn off, thereby saving energy. If any movement in front of the display  10  is detected within the first predetermined time, the determination unit  201  obtains status of the display, such as being turned off or in operating state. If the determination unit  201  determines information that the display  10  is operating, the determination unit  201  outputs a second control signal to the control circuit  40 , to maintain the display  10 . Alternatively, if the determination unit  201  determines information that the display  10  is turned off; the determination unit  201  determines whether any movement in front of the display  10  is detected after the second predetermined time has elapsed. The determination unit  201  outputs a third control signal to the control circuit  40  in response to the movement being detected after the second predetermined time has elapsed, to control the display  10  to operate. The determination unit  201  outputs a fourth control signal to the control circuit  40  in response to the movement taking place before the end of the second predetermined time, to keep the display  10  in the turned off state. 
         [0018]      FIG. 3  shows that four ultrasonic probes  30  are arranged on a bottom side of a front surface of the display  10 . 
         [0019]      FIG. 4  shows an embodiment of a control method for the display  10 , the control method includes the steps following. 
         [0020]    In step S 1 , the processor  20  obtains signals from each ultrasonic probe  30  on any object detected and about the movement of each detected object. 
         [0021]    In step S 2 , the processor  20  determines whether any movement in front of the display  10  is detected within a first predetermined time. If any movement in front of the display  10  is detected within the first predetermined time, step S 3  is implemented; if no movement is detected after the first predetermined time has elapsed, step S 4  is implemented. 
         [0022]    In step S 3 , the processor  20  determines whether the display  10  is operating. If the display  10  is operating, step S 5  is implemented; if the display  10  is turned off, step S 6  is implemented. 
         [0023]    In step S 4 , the processor  20  prompts the control circuit  40  to turn off the display  10 . 
         [0024]    In step S 5 , the processor  20  prompts the control circuit  40  to not turn off the display  10 . 
         [0025]    In step S 6 , the processor  20  determines whether the movement is detected after the second predetermined time has elapsed. If the movement is detected after the second predetermined time has elapsed, step S 7  is implemented; if the movement takes place before the end of the second predetermined time, step S 8  is implemented. 
         [0026]    In step S 7 , the processor  20  prompts the control circuit  40  to turn on the display  10 . 
         [0027]    In step S 8 , the processor  20  prompts the control circuit  40  to continue the turned-off state of the display  10 , to save energy. 
         [0028]    While the disclosure has been described by way of example and in terms of a preferred embodiment, it is to be understood that the disclosure is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements as would be apparent to those skilled in the art. Therefore, the range of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.