Abstract:
A displaying system and a displaying method are used for displaying surrounding image of the displaying system when the displaying system arrives at a place. There are first image file and first coordinates data correspondingly stored in a storage device in advance. A GPS device in the displaying system is detecting the location coordinates of the displaying system. When the location coordinates and the first coordinates data are very near, the displaying system displays the first image of the first image file.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention generally relates to a display system and a display method, more particular to a display system and a display method used for retrieving image file by comparing coordinate data. 
         [0003]    2. Description of the Prior Art 
         [0004]    A positioning system, such as a global positioning system (GPS), is well developed and very convenient for humankind. The global positioning system can generate coordinate data with a artificial satellite and position itself on Earth&#39;s surface, this has been widely adopted to the automobile industry. The global positioning systems predetermined stored map data can show the map and location of the car for the driver to know where he is. And the driver can get a clear understanding of which direction he should go. 
         [0005]    The above mentioned is a basic technology overview of GPS. The patent number 093203312 “traffic route tracing and manage system” from the Republic of China uses a management module to store the environment image data captured from a camera in a hard disc drive. The management module retrieves the environment image data from the hard disc drive when a far-end user calls the manager module via a communicator. Subsequently, the environment image data retrieved can also be transmitted via the communicator to the far-end user. So the user can monitor the environment image of the car at the far-end position. 
         [0006]    However, there are still many inconvenient things about the global positioning system. For instance, the driver knows that he must turn right into a lane by the global positioning system. But he actually sees two lanes on his right side. The reason maybe is that the map data is obsolete. The reason may also be that the environment is too complex for the driver to distinguish. 
         [0007]    Therefore, the main purpose of this invention is concerning a display system to retrieve image file by comparing coordinate data and a display method related to solve the above mentioned problem. 
       SUMMARY OF THE INVENTION 
       [0008]    The primary objective of this invention is to provide a display system and a display method using coordinate data to capture image files. The user can use the pre-stored image files to help distinguish his environment. For the user to compare the images displayed by image files with his actual surroundings in order to make a better judgment. 
         [0009]    To achieve the above objective, the present invention provides a display system comprising a storage, a positioning system, a processor, and a display device. 
         [0010]    The storage is used for storing a first image file and a first coordinate data corresponding, wherein the first image file is captured at the lotion with the first coordinate data. 
         [0011]    The positioning system is used for generating a position coordinate data. The processor retrieves the first image file when the position coordinate data is very near the first coordinate data. That means the distance between the position coordinate data and the first coordinate data lower than a first predetermined value. Then the display device therefore is used for displaying first image file. 
         [0012]    Furthermore, the storage stores an image database and a text file. The image database comprises the first image file and a plurality of image file. The text file records party image files of the image database and coordinate data corresponding with the image files. These party image files are chosen previously. These coordinate data corresponding to these records party image files links up a route. 
         [0013]    The display system moves along the route. The display device displays the first image file when the first image file existed in the text file and the distance between the position coordinate data and the first coordinate data is lower than a first predetermined value. 
         [0014]    The route includes a start point and an end point. The display system further comprises an image capture device. When the display system is in a predetermined situation. The image capture device starts to capture and record a real-time image file in the image database when the display system moves from the start point to the end point. At the same time, a coordinate data corresponding to the real-time image file is generated. The real-time image file and the coordinate data combine to form the text file. 
         [0015]    Whereas, the display system and display method of this invention stores the first coordinate data corresponding the image file captured at this location into the storage, and compares the position coordinate data generated from the positioning system with the first coordinate data. The user can clearly distinguish the environment depending on the image file displayed on the display system when the GPS is used. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS  
         [0016]    The objects, spirits, and advantages of the preferred embodiments of the present invention will be readily understood by the accompanying drawings and detailed descriptions, wherein: 
           [0017]      FIG. 1  illustrates a display system of the present invention; 
           [0018]      FIG. 2  illustrates a storage of the present invention; 
           [0019]      FIG. 3  illustrates an image capture device of the display system to capture and generate an image of the present invention; 
           [0020]      FIG. 4  illustrates these image files from a database of the display system; 
           [0021]      FIG. 5  illustrates another relation figure about these image files from an image database of the display system; and 
           [0022]      FIG. 6  illustrates a flowchart of display method of this invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0023]    With reference to  FIG. 1 , which illustrate a display system of the present invention. The display system  30  provided by the present invention is used in a transportation vehicles for positioning the location of the display system and letting the user distinguish the environment. The display system  30  comprises a storage  32 , a positioning system  34 , a processor  36 , and a display device  37 . 
         [0024]    The storage  32  is used for storing a first image file  4002  and a first coordinate data  4202  corresponding to the first image file  4002 . Wherein, the first image file  4002  is captured at the position of the first coordinate data  4202  previously. Then the first image file  4002  be stored in a storage  32  combined with the first coordinate data  4202 . 
         [0025]    The positioning system  34 , for example, such as a global positioning system (GPS), is positioning the location of the display system  30  with an artificial satellite. Then a position coordinate data  3402  generated shows the position of the display system  30 . The display system  30  is usually used in vehicles such as a car. Whereby, the position coordinate data  3402  also shows the position of the car. 
         [0026]    The processor  36  is used for comparing the position coordinate data  3402  and the first coordinate data  4202 . Then the processor  36  retrieves the first image file  4002  when the distance between the position coordinate data  3402  and the first coordinate data  4202  are lower than a first predetermined value  44 . The first predetermined value  44  set too large is easier to monitoring for the processor  36  but maybe find some image file useless. If the first predetermined value  44  set too small, the processor  36  will ignore some first image file  4002  important. 
         [0027]    Ordinarily, the display device  37  shows the map depending on a map data, and shows the location of the car on the map by the position coordinate data  3402 . Besides, the display device  37  of the present invention further displays the image of the first image file  4002  retrieved from the processor  36 . 
         [0028]    When the driver arrives the position of the first coordinate data  4202 , sometimes, the driver can&#39;t distinguish the environment depending on the GPS map because the map data is obsolete. At this time the driver can distinguish the environment assisted by the image generated from the first image file  4002  displayed on the display device  37 . 
         [0029]    With reference to  FIG. 2 , which illustrates storage of the present invention of the present invention. The storage  32  stores an image database  40  and a text file  42 . The image database  40  comprises the first image file  4002  and a plurality of other image files  4004 . Party of these image files  4004  within the image database  40  and these coordinate data  4202  corresponding to the image files  4002 ,  4004  are recorded in the text file  42 , Wherein, these multiple coordinate data  4202  of the text file  42  links to a route  46 . 
         [0030]    When the car with the display system  30  moves along the route  46 . The display device  37  displays the image of the first image file  4002  for the driver when the distance between the position coordinate data  3402  and the first coordinate data  4202  is lower than the first predetermined value  44 . That means that the driver arrives at the position of the first coordinate data  4202 . 
         [0031]    A word or a sentence also can be recorded in the text file  42  and link to the first coordinate data  4202  and the first image file  4002 . When the driver arrives at the position of the position coordinate data  3402 , the display system  30  either can display the first image file  4002  or can speak a voice about that word or that sentence such as “turn right please”. The voice is generated by the skill of “text-to-speech; TTS”. 
         [0032]    The text file  42  can show as following form: 
         [0000]    
       
         
               
               
             
           
               
                   
                   
               
             
             
               
                   
                 Image 1.jpg, E: 121° 31′, N: 25° 04′ 
               
               
                   
                 Image 2.jpg, E: 121° 31′, N: 25° 05′ 
               
               
                   
                 turn right please, E: 121° 31′, N: 25° 05′ 
               
               
                   
                 Image 3.jpg, E: 121° 31′, N: 25° 05′ 
               
               
                   
                 Image 4.jpg, E: 121° 32′, N: 25° 05′ 
               
               
                   
                 Image 5.jpg, E: 121° 33′, N: 25° 05′ 
               
               
                   
                   
               
             
          
         
       
     
         [0033]    With reference to  FIG. 3 , which illustrates an image capture device of the display system to capture and generate an image of the present invention, further describes about “the first image file  4002  is captured at the position of the first coordinate data  4202  previously”. The route  46  includes a start point and a end point. The display system  30  further comprises an image capture device  38  such as a camera. When the display system  30  in a predetermined situation, the image capture device  38  starting to capture and record a real-time image file in the image database  40  when the display system  30  moving from the start point to the end point. So the real-time image file means the first image file  4002  and said a plurality of image files  4004  in the image database  40  above mentioned. 
         [0034]    The display system  30  further recording the real-time image file and the coordinate data corresponding to the real-time image file in the text file  42 . The coordinate data is generated from the positioning system  34 . That is the image file  4002 ,  4202  and the coordinate data  4206  in the text file  42  above mentioned. 
         [0035]    There are many kinds of the predetermined situation. One is changing the direction. When the car turn right or left, the direction of the display system  30  moving and changing over a predetermined angle. That may means one kind of the predetermined situation. Usually when the car turn a corner, the driver needs to distinguish the environment. It is the timing for capturing the image to record as the real-time image file. In fact, the predetermined angle can be set previously, such as 30 or 45 or 90 degrees. 
         [0036]    The predetermined situation can mean every period. The image capture device  38  can captures the image to generate the image file in every period. That also can let the driver to make sure about that the environment is same as the image or not. Furthermore, the predetermined situation can mean every predetermined distance. The image capture device  38  captures the image every predetermined distance. This can avoid parking too long time to capture too many same images. 
         [0037]    The predetermined situation also can be a feature image. That means the image captured from the image capture device  38  matching the feature image. Generally, an advertisement board or a building is more worthy for image capture device  38  to capture, because the advertisement board and the building are more obviously. The advertisement board and the building have a same feature that is a long line. The edge of the advertisement board or the building is the long line. So the display system  30  can treat the long line as the feature image when the length of the long line is over a predetermined value. Even sometimes the display system  30  captures some images not really the advertisement board or the building, but it is still utility for sometimes capturing really the advertisement board or the building. 
         [0038]    Further describing, after the image capture device  38  captures the image, the image capture device  38  transfers the RGB color to the YUV color. Then the display system  30  detects the long line in the YUV image. If a line is long enough, the display system  30  determines the line is the feature image. 
         [0039]    With reference to  FIG. 4 , which illustrates these image files from a database of the display system. The image captured by the image capture device  38  can store in a far end database  25  that is couples the display system  30  by network  20 . When the driver needs these images, he can down loaded the image from a far end database  25  via the network  20  to the storage  32  of the display system  30 . Said network  20  could be internet or intranet. 
         [0040]    With reference to  FIG. 5 , which illustrates another relation figure about these image files from an image database of the display system. In one instance of the present invention, a route coordinate data  54  is predetermined stored in the storage  32 . There are multiple image files  4004  stored in a for end image database  52 . 
         [0041]    The display system  30  can compare the coordinate data of these image files  4004  with the route coordinate data  54  via the network  50  when the display system  30  moves along with the predetermined route. The display system  30  will treat the image file  4004  as the first image file  4002  above mentioned when the distance between the coordinate data of the image file  4004  and the route coordinate data  54  is lower than a second predetermined value  58 . Then the coordinate data of the image file  4004  is first coordinate data  4202 . These multiple first image files  4002  and first coordinate data  4202  corresponding are down loaded from the image database  52  to the display system  30 . Subsequently, the display system  30  will operate as above mentioned. Wherein, the second predetermined value  58  is maybe same to the first predetermined value  44  or not. 
         [0042]    With reference to  FIG. 6 , which illustrates a flowchart of display method of this invention. This invention also is a display method operated by the display system  30 . The display method comprises following steps: 
         [0043]    Step S 02 : A first image file  4002  is stored in the storage  32 . The first image file  4002  is captured at the position of the first coordinate data  4202  previously. 
         [0044]    Step S 04 : The first image file  4002  stored in the storage  32  combines with the first coordinate data  4202 . 
         [0045]    Step S 06 : Then a position coordinate data  3402  generated shows the position of the display system  30 . The position coordinate data  3402  also shows the position of the car. 
         [0046]    Step S 08 : The processor  36  compares the position coordinate data  3402  and the first coordinate data  4202 . 
         [0047]    Step S 10 : Then the processor  36  retrieves the first image file  4002  when the distance between the position coordinate data  3402  and the first coordinate data  4202  are lower than a first predetermined value  44 . 
         [0048]    Step S 12 : The display device  37  shows the map depending on a map data, and shows the location of the car on the map by the position coordinate data  3402 . Besides, the display device  37  of the present invention further displays the image of the first image file  4002  retrieved from the processor  36 . 
         [0049]    Point to the Step S 02  and S 04 , further comprises the step of storing an image database  40  and a text file  42 . The image database  40  comprises the first image file  4002  and another multiple image files. Party of these image files  4004  within the image database  40  and these coordinate data  4202  corresponding to the image files  4002 ,  4004  are recorded in the text file  42 . Wherein, these multiple coordinate data  4202  of the text file  42  links to a route  46 . 
         [0050]    When the car with the display system  30  moves along the route  46 . The display device  37  displays the image of the first image file  4002  for the driver when the distance between the position coordinate data  3402  and the first coordinate data  4202  is lower than the first predetermined value  44 . That means that the driver arrives at the position of the first coordinate data  4202 . 
         [0051]    The route  46  includes a start point and an end point. The display method further comprises a step of. When the display system  30  in a predetermined situation, the image capture device  38  starting to capture and record a real-time image file in the image database  40  when the display system  30  moving from the start point to the end point. The display system  30  further recording the real-time image file and the coordinate data corresponding to the real-time image file in the text file  42 . 
         [0052]    The predetermined situation may be the direction of the display system  30  moving and changing over a predetermined angle. The predetermined situation may be the display system  30  capturing the image to generate the image file in every period. The predetermined situation also can mean every predetermined distance. Otherwise, the predetermined situation also can be a feature image. 
         [0053]    As a conclusion, the present invention adopts the display system  30  and display method to store the first coordinate data  4202  corresponding the image file captured at this location into the storage  32 , and compares the position coordinate data  3402  generated from the positioning system  34  with the first coordinate data  4202 . The user can clearly distinguish the environment depending on the image file displayed on the display system  30  when the GPS is used. 
         [0054]    Although this invention has been disclosed and illustrated with reference to particular embodiments, the principles involved are susceptible for use in numerous other embodiments that will be apparent to persons skilled in the art. This invention is, therefore, to be limited only as indicated by the scope of the appended claims.