Patent Publication Number: US-2007113253-A1

Title: On-demand service system and method thereof by applying broadcasting

Description:
FIELD OF THE INVENTION  
      The present invention relates to an on-demand service system and the method thereof, and more particularly relates to an on-demand service system and method for providing an interactive and on-demand information service by applying unilateral broadcasting contents and messages incorporated with a satellite positioning system.  
     BACKGROUND OF THE INVENTION  
      The so-called digital broadcasting system indicates the digital audio broadcasting (DAB) or the digital video broadcasting (DVB).  
      The digital audio broadcasting technology was opened up and developed in Germany since 1980. The digital audio broadcasting system is a broadcasting system after the AM and FM systems. In regard to the voice quality of the digital audio broadcasting system, the signal-to-noise ratio is over 95 dB and the bit rate is over 192 Kbps, which are better than the tone qualities of the most MP3 (MPEG audio layer 3). In addition, with some advantages, the digital audio broadcasting system has been widely applied. For example, the advantages of the digital audio broadcasting system include the ability of broadcasting the stereo program capable of transmitting 6 CDs simultaneously, the ability of transmitting the data information widely, the practicability of accomplishing a network with a single frequency by eliminating the pathway interference, and the ability of changing or recombining the studio program anytime and anywhere by the normal broadcasting system or the direct broadcast satellite system.  
      The digital video broadcasting system includes the digital video broadcasting-satellite (DVB-S), the digital video broadcasting-cable (DVB-C), digital video broadcasting-terrestrial (DVB-T) and digital video broadcasting-handheld (DVB-H). All the mentioned digital video broadcasting systems apply the MPEG-2 transport streams as their main transmission contents. In addition, it is possible to eliminate the noise and compress the signal so as to increase the transmission capacity, increase the utility rate of the channel, and provide the video image and sound effect with relatively high qualities via a digital broadcasting system.  
      Nevertheless, in the conventional broadcasting systems, such as the digital audio broadcasting system or the digital video broadcasting system, the broadcasting is always unilateral, and the user could only receive the unilaterally broadcasting information. Moreover, for the conventional broadcasting systems, it is impossible to provide an on-demand information service based on the respective demands of the user.  
      In order to satisfy the more and more demands, an on-demand service system and the method thereof are accordingly provided.  
      In view of the mentioned above, it is an object to provide an on-demand service system and method for providing an interactive and on-demand information service by applying unilateral broadcasting contents and messages and a satellite positioning system.  
     SUMMARY OF THE INVENTION  
      In order to achieve the mentioned object, an on-demand service system is provided. The on-demand service system includes a positioning module for providing a position information, a receiving unit for receiving a digital broadcasting message provided by a digital broadcasting server, an input unit for inputting an on-demand service command, a processing unit for selecting a specific service information from the digital broadcasting message according to the position information and the on-demand service command, and an output unit for outputting the service information.  
      The above contents and advantages of the present invention will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed descriptions and accompanying drawings, in which: 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  shows a block diagram of the on-demand service system according to the present invention;  
       FIG. 2  shows a block diagram of the on-demand service system according to a preferred embodiment of the present invention;  
       FIG. 3  shows a flow chart of the method for performing an on-demand service according to a preferred embodiment of the present invention;  
       FIG. 4  shows a diagram of the on-demand service system according to a preferred embodiment of the present invention; and  
       FIG. 5  shows a diagram of inquiring the local parking information from the on-demand service system according to a preferred embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
      The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed. In addition, the same elements would be illustrated by the same reference numerals.  
      Please refer to  FIG. 1 , which shows a block diagram of the on-demand service system applying the broadcasting according to the present application. The on-demand service system  1  includes the positioning module  11 , the receiving unit  12 , the input unit  13 , the processing unit  14  and the output unit  15 . The positioning module  11  is used for providing a position information  111 , the receiving unit  12  is used for receiving a digital broadcasting message  161  provided from the digital broadcasting server  16 , and the input unit  13  is used to input an on-demand service command  131 . The processing unit  14  is used for selecting a service information  141  corresponding to the position information  111  and the on-demand service command  131  from the digital broadcasting message  161  according to the position information  111  and the on-demand service command  131 . The output unit  15  outputs the service information  141 .  
      The digital broadcasting server  16  unilaterally broadcasts the digital broadcasting message  161 . Preferably, the positioning module  11  is a satellite positioning system, the receiving unit  12  is ones of a digital audio broadcasting receiver and a digital video broadcasting receiver, and the output unit  15  could be a speaker.  
      Please refer to  FIG. 2 , which shows a block diagram of the on-demand service system applying a broadcasting according to a preferred embodiment of the present application. The on-demand service system  2  includes the global positioning system module  24 , the digital audio broadcasting receiver  22 , the microprocessor  23 , and the touch screen  25 . The global positioning system module  24  provides a position information  241 . The digital audio broadcasting receiver  22  is used for receiving a wireless signal  211  representing the digital broadcasting message provided by the digital broadcasting server  21 . The digital audio broadcasting receiver  22  includes an antenna  221  and a signal modulating device  222 . The antenna  221  is used to receive the wireless signal  211 , and the signal modulating device  222  is used to transform the wireless signal  211  into a digital message  223 . The touch screen  25  has an input function and an output function. The touch screen  25  includes a display screen  252  for outputting a service information  27  and a touch sensor  251  for user inputting an on-demand service command  26 . The microprocessor  23  is used for selecting a service information  27  corresponding to the position information  241  and the on-demand service command  26  from the digital message  223  according to the position information  241  and the on-demand service command  26 . In addition, the microprocessor  23  transmits the service information  27  to the display screen  252  for showing out.  
      Please refer to  FIG. 3 , which is a diagram showing the flow chart of the method for performing the on-demand service according to the present application. The method includes the following steps: S 31  receiving a position information, S 32  receiving a digital broadcasting message provided by a digital broadcasting server, S 33  inputting an on-demand service command, S 34  selecting a service information corresponding to the position information and the on-demand service command from the digital broadcasting message according to the position information and the on-demand service command; and S 35  outputting the service information.  
      Please refer to  FIG. 4 , which shows a diagram of the on-demand service system according to a preferred embodiment of the present invention. As shown in  FIG. 4 , the main menu  41  of the on-demand service system includes four items, i.e. Item  1  car navigation, Item  2  local traffic information  43 , Item  3  local parking information  44  and Item  4  other services. The user inputs an on-demand command from the input unit according to his desire. For example, when the user inputs an demand to select Item  3  local parking information  44 , the processing unit of the on-demand service system would perform a comparison process for the digital broadcasting message received by the receiving unit to find out the relative parking information and then select out the corresponding local parking information based on the position information provide by a global positioning system. Then, the local parking information is outputted by the output unit.  
      Please refer to  FIG. 5 , which shows a diagram of inquiring the local parking information from the on-demand service system according to a preferred embodiment of the present invention.  FIG. 5  shows a service information under a situation that the user has inputted a demand for Item  3  local parking information. As shown in  FIG. 5 , the provided service information includes the public indoor parking  51 , the public outdoor parking  52 , the private indoor parking  53  and the private outdoor parking  54 . As mentioned above, the on-demand service system and method according to the present application provide an interactive and on-demand information service by applying unilateral digital broadcasting messages and a satellite positioning system.  
      While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention needs not be limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.