Abstract:
Provided is a network global positioning system (GPS) terminal. The network GPS terminal includes: a GPS receiver receiving GPS data; a GPS processor processing the received GPS data to a predetermined form; a network communication part communicating with an external apparatus through a network in order to receive a request for the GPS data from the external apparatus, and transmit the processed GPS data to the external apparatus in response to the request; a security access controller authenticating the external apparatus; and a network management part managing connection information and security information of the external apparatus, the network communication part simultaneously communicating with at least one external apparatus using a TCP/IP protocol. A method of providing GPS data using a network is also provided.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims priority to and the benefit of Korean Patent Application No. 2006-0101940, filed Oct. 19, 2006, the disclosure of which is incorporated herein by reference in its entirety. 
       BACKGROUND 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to a method and apparatus for providing global positioning system (GPS) data using a network. 
         [0004]    2. Discussion of Related Art 
         [0005]    A global positioning system (GPS) apparatus uses a technique capable of accurately determining a terrestrial position using a number of satellites orbiting the earth. 
         [0006]    Currently, drivers and passengers are provided with various convenient services through a variety of application programs using a GPS. 
         [0007]    However, since the application programs applied to the GPS apparatus are closely related to the GPS, it is difficult to separate a GPS receiver from the program. Therefore, a GPS apparatus with a GPS receiver attached thereto has been developed to be used by a requested application program. 
         [0008]    Consequently, a typical GPS receiving apparatus is manufactured to meet requirements of the application program, and has a close relationship with an apparatus in which the application program operates. Specifically, the GPS receiver is in communication with connection equipment through serial communication, and received data is processed by a program of an application apparatus using a GPS reception process, a GPS processing engine, etc. in a number of application apparatuses. 
         [0009]    In this case, when there are several apparatuses requesting GPS data, each of the apparatuses is equipped with a GPS receiver to thereby receive the GPS data, and this results in inefficiency. 
         [0010]    In particular, in the case of a vehicle for which the GPS apparatus is often used, each apparatus separately receives and processes a GPS signal. This results in the vehicle possibly being disorganized and messy inside, and a waste of resources. 
       SUMMARY OF THE INVENTION 
       [0011]    The present invention is directed to a method and apparatus for providing global positioning system (GPS) data using a network. 
         [0012]    Also, the present invention is directed to a method and apparatus for providing GPS data capable of simultaneously providing the GPS data to various kinds of external apparatuses requesting the GPS data using a Transmission Control Protocol/Internet Protocol (TCP/IP) protocol. 
         [0013]    Further, the present invention is directed to a method and apparatus for providing GPS data capable of simultaneously providing the GPS data using an internal network to devices that use GPS data in a vehicle having the internal network. 
         [0014]    One aspect of the present invention provides a network GPS terminal including: a GPS receiver receiving GPS data; a GPS processor processing the received GPS data to a predetermined form; a network communication part communicating with an external apparatus through a network in order to receive a request for the GPS data from the external apparatus, and transmit the processed GPS data to the external apparatus in response to the request; a security access controller authenticating the external apparatus; and a network management part managing connection information and security information of the external apparatus, the network communication part simultaneously communicating with at least one external apparatus using a TCP/IP protocol. 
         [0015]    The GPS receiver may include a GPS antenna receiving a satellite GPS signal. Also, the GPS receiver may include a mobile communication antenna receiving a signal of a mobile communication network including GPS data. The GPS processor may process the GPS data into a form usable by the external apparatus requesting the GPS data. The GPS processor may further include a memory including GPS data, and connection information and security information of the external apparatus. 
         [0016]    The GPS data included in the memory may include information on current time, velocity, longitude, latitude, and azimuth angle. Also, the connection information of the external apparatus included in the memory may include information on an apparatus recognition number, an authentication key, an authentication method, authentication key registration time, and a validity term of the authentication key. In addition, the security information of the apparatus included in the memory may include information on an apparatus recognition number, a machine access code (MAC), an authentication method, and registration time. The security access controller may restrict or allow access of the external apparatus. 
         [0017]    Another aspect of the present invention provides a method of providing GPS data using a network including the steps of: (a) receiving GPS data; (b) processing the received GPS data into a predetermined form; (c) coupling with an external apparatus through a network; (d) receiving a request for the GPS data from the external apparatus coupled through the network; (e) authenticating the external apparatus; and (f) transmitting the processed GPS data to the authenticated external apparatus through the network, communication with the external apparatus being performed using a TCP/IP protocol. 
         [0018]    Step (a) may include the steps of: initializing a GPS receiver; periodically confirming whether the initialized GPS receiver receives a signal including GPS data or not; extracting GPS data from the signal including the GPS data; and storing the extracted GPS data in a memory. However, when the extracted GPS data is unnecessary, the received data may be discarded. In step (b), the received GPS data may be converted into a packet form usable by a TCP/IP protocol. Also, step (b) may further include the step of storing connection information of the external apparatus coupled through the network in an external apparatus connection information database. Further, step (e) may include the steps of: confirming whether an authentication key of the external apparatus exists in a memory or not; confirming whether response key information corresponding to the authentication key of the memory is received from the external apparatus or not; and confirming whether a validity term of the authentication key is expired or not. 
         [0019]    Moreover, step (e) may further include the steps of: receiving a request for changing management information from the authenticated external apparatus; and analyzing the change request to thereby change at least one of external apparatus information, an external apparatus connection management program, and an external apparatus connection setup. Furthermore, step (e) may further include the steps of: receiving a request for changing connection information from the authenticated external apparatus; and analyzing the change request to thereby change at least one of external apparatus security information, an external apparatus connection status, and external apparatus connection information. 
     
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0020]    The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: 
           [0021]      FIG. 1  illustrates a configuration of a global positioning system (GPS) apparatus using a network according to an exemplary embodiment of the present invention; 
           [0022]      FIG. 2  is a flowchart illustrating a method of receiving a GPS signal according to an exemplary embodiment of the present invention; 
           [0023]      FIG. 3  is a flowchart illustrating a connection to an external apparatus for transmission of GPS data according to an exemplary embodiment of the present invention; 
           [0024]      FIG. 4  is a flowchart illustrating connection management of an external apparatus in a network management part according to an exemplary embodiment of the present invention; and 
           [0025]      FIG. 5  illustrates data stored in a memory according to an exemplary embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
       [0026]    The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to the exemplary embodiments set forth herein. 
         [0027]      FIG. 1  illustrates a configuration of a global positioning system (GPS) apparatus using a network according to an exemplary embodiment of the present invention. 
         [0028]    Referring to  FIG. 1 , the GPS apparatus according to the present invention includes a GPS receiver  101 , a GPS processor  103 , a controller  105 , a memory  111 , a network management part  113 , a network communication part  107 , and a security access controller  109 . 
         [0029]    The GPS receiver  101  serves to receive GPS data in the GPS apparatus according to the present invention. Since a GPS generally receives distance information from a GPS satellite orbiting the earth, the GPS receiver  101  should be able to receive the GPS data transmitted from the GPS satellite. Therefore, in this case, an antenna capable of receiving a GPS signal should be included. Meanwhile, when a position detecting system based on a base station of a mobile communication system is applied, using a mobile communication antenna capable of receiving only a mobile communication signal is sufficient without directly receiving location information from the GPS satellite. As a result, the receiver may have a simpler structure. 
         [0030]    The GPS processor  103  serves to process the GPS data received by the GPS receiver  101  to a form usable by other apparatuses and the GPS apparatus of the present invention. Since the GPS apparatus transmits the received GPS data to other apparatuses connected to the GPS apparatus as well, the GPS data should be converted into a form usable by the apparatuses connected to the GPS apparatus. 
         [0031]    The controller  105  controls overall operations of the GPS apparatus, and in particular, the controller  105  transmits the GPS data processed by the GPS processor  103  to the other apparatuses coupled with the GPS apparatus. Also, the controller  105  determines whether other apparatuses requesting the GPS apparatus to provide information may be coupled with the GPS apparatus or not. 
         [0032]    The memory  111  stores the GPS data processed by the GPS processor  103 , and is capable of storing information on other apparatuses that can be coupled with the GPS apparatus and information on apparatuses currently maintaining connections. 
         [0033]    The network communication part  107  transmits the GPS data to an external apparatus coupled with the GPS apparatus through a network according to an order of the controller  105 , and receives a GPS data request signal from the external apparatus. 
         [0034]    In particular, the network communication part  107  may use an open type protocol, a Transmission Control Protocol/Internet Protocol (TCP/IP) protocol, which is irrespective of connection type. Therefore, whichever type of network, i.e., a wired or wireless network is used, a connection to an external apparatus can be easily established. 
         [0035]    The security access controller  109  controls access authentication of external apparatuses connected by the network communication part  107 . The security access controller  109  allows or prevents access of the external apparatuses requesting access with reference to information on accessible apparatus and apparatus maintaining a connection stored in the memory  111 . In particular, when the GPS apparatus is wirelessly connected to the external apparatus, since a connection environment may vary depending on an external environment, it is increasingly becoming necessary to process interruption of other connection signals or an incorrect connection request signal. 
         [0036]    The network management part  113  manages connections and releases of the external apparatuses connected to the GPS apparatus. The network management part  113  may be connected using a path different from a general data access path of an external apparatus. Particularly, when the TCP/IP protocol is used, the network management part  113  may use a port different from a data access port. 
         [0037]    Also, the network management part  113  may be connected to an operator external apparatus capable of changing access data of the apparatus according to the present invention using a dedicated connection port, so that it changes access data of an external apparatus. 
         [0038]      FIG. 2  is a flowchart illustrating a method of receiving a GPS signal according to an exemplary embodiment of the present invention. 
         [0039]    Referring to  FIG. 2 , first, to receive the GPS signal, a GPS receiver is initialized (Step  201 ). Then, reception of data is periodically confirmed as to whether GPS data is received or not (Step  203 ). When the GPS data is received, it is determined whether the received GPS data is valid or not (Step  205 ). When the received GPS data is valid data, the data is stored in a memory (Step  207 ), and reception of GPS data is confirmed again. 
         [0040]    Meanwhile, if the received GPS data is not valid, the received data is discarded (Step  209 ). 
         [0041]    Since the reception of the GPS signal is continuously performed and renewed, a position of the GPS apparatus is continuously renewed even when the GPS apparatus is on the move. 
         [0042]      FIG. 3  is a flowchart illustrating a connection to an external apparatus to transmit GPS data according to an exemplary embodiment of the present invention. 
         [0043]    Referring to  FIG. 3 , a network communication part is initialized in order to be connected to an external apparatus (Step  301 ). A TCP/IP socket for a connection to the external apparatus is generated (Step  303 ). The generated socket is a server socket, and waits for a connection request from the external apparatus (Step  305 ). When the connection request from the external apparatus is received (Step  307 ), it is determined whether the external apparatus from which the connection request is transmitted is an authenticated external apparatus or not (Step  309 ) in order to connect to the external apparatus. 
         [0044]    The authentication of the external apparatus is performed by a security access controller by confirming information on the external apparatus stored in a memory to thereby authenticate the external apparatus. 
         [0045]    As a result of the authentication, when the external apparatus is an authenticated external apparatus, the connection to the external apparatus is maintained (Step  313 ). Subsequently, it is determined whether the external apparatus requests data (Step  317 ). When the apparatus requests data, the data corresponding to the request is transmitted (Step  321 ). Otherwise, connection maintenance time is calculated (Step  319 ). 
         [0046]    After it is determined whether previously set connection maintenance time is terminated or not (Step  315 ), the connection is released when any request is not received during the connection maintenance time, and the socket waits for a connection request from an external apparatus (Step  311 ). 
         [0047]    Meanwhile, when the external apparatus requesting the connection is not an authenticated external apparatus, the connection is released and the socket waits for a connection request from an external apparatus again (Step  311 ). 
         [0048]      FIG. 4  is a flowchart illustrating connection management of an external apparatus performed by a network management part according to an exemplary embodiment of the present invention. 
         [0049]    The network management part may be connected to an operator external apparatus to thereby change data of an external apparatus connected through a network or may be connected to a typical external apparatus to thereby change a connection status of the apparatus. 
         [0050]    The network management part is connected to the external apparatus using a connection method different from a connection method for data communication. In particular, when the TCP/IP protocol is used, a connection port for data transmission is different from that for communication of the network management part. 
         [0051]    Referring to  FIG. 4 , the network communication part is initialized to be connected to an external apparatus (Step  401 ). Afterwards, a TCP/IP socket for a connection to an external apparatus is generated (Step  404 ). Connection port information of the generated TCP/IP socket uses a port different from the socket connection port of  FIG. 3 . 
         [0052]    The generated socket is a server socket, and waits for a connection request from an external apparatus (Step  405 ). When the connection request from an external apparatus is received (Step  407 ), it is determined whether the external apparatus from which the connection request is transmitted is an authenticated external apparatus or not (Step  409 ) to establish a connection to the apparatus. 
         [0053]    The authentication of the external apparatus is performed by a security access controller by confirming information on external apparatuses stored in a memory to thereby authenticate the external apparatus. In particular, when a connection for network management is established, a connection of the operator external apparatus may be subjected to authentication as well. 
         [0054]    As a result of the authentication, when the apparatus is an authenticated external apparatus, the connection to the external apparatus is maintained (Step  413 ). Then, a type of the connected external apparatus is determined (Step  417 ). When the connected external apparatus is the operator external apparatus, the request is analyzed (Step  419 ) to thereby change an external apparatus information database according to the request from the external apparatus (Step  421 ), to thereby execute a connection management program (Step  423 ) or to thereby change a connection setup (Step  425 ). Here, the external apparatus information database includes information on a connectable external apparatus. Also, the external apparatus information database may include a current connection status of an external apparatus as well. 
         [0055]    Meanwhile, when the connected external apparatus is a typical external apparatus, the request is analyzed (Step  427 ) to thereby release or maintain the connection to the external apparatus (Step  429 ), or to thereby remove or confirm an external apparatus connection database (Step  431 ), otherwise security information is changed (Step  433 ). The external apparatus connection database includes information on a currently connected external apparatus. The external apparatus connection information database may include information on a connectable external apparatus as well. 
         [0056]    Meanwhile, when the external apparatus is neither the operator external apparatus nor the typical external apparatus (Step  417 ), it is determined whether a previously setup connection maintenance time has been terminated or not (Step  415 ), so that the connection is released when there is no request during the connection maintenance time, and the socket waits for a connection request from an external apparatus (Step  411 ). 
         [0057]    When the external apparatus that requests a connection is not an authenticated external apparatus (Step  409 ), the connection is removed and the socket waits for a connection request from an external apparatus again (Step  411 ). 
         [0058]    Here, the operator external apparatus is an apparatus used when an operator is directly connected to the GPS apparatus to thereby change a setup or data of the apparatus. Also, the typical apparatus is an apparatus that is connected to the GPS apparatus and uses GPS data. 
         [0059]      FIG. 5  illustrates data stored in a memory according to an exemplary embodiment of the present invention. 
         [0060]    Referring to  FIG. 5 , Table  500  represents a database in which a received GPS signal is stored. Reference numeral  501  represents a sequence of data. Reference numeral  503  represents a type of data. In other words, it denotes a type of location-related information that can be obtained from a GPS, such as location, time, direction, velocity, etc. Reference  505  represents a format applied to each data. Reference numeral  507  represents what each data indicates. 
         [0061]    For example, a direction that is a fifth item is represented in a unit of radian and has an angle of 1 to 360 degrees (0 to 2π). 
         [0062]    Table  510  represents a database for managing an external apparatus. 
         [0063]    Reference numeral  511  represents a sequence of an external apparatus connected to the GPS apparatus. Reference numeral  512  represents a connection recognition name of the external apparatus, and reference numeral  513  represents a machine address code (MAC) of the connected external apparatus. Reference numeral  514  represents a method of authentication when the external apparatus is connected to the GPS apparatus. Reference  515  represents whether a current connection status is an authenticated connection or not, and reference numeral  516  represents access time when the external apparatus accesses an apparatus management database. Reference numeral  517  represents requirements that the external apparatus currently requests. 
         [0064]    For example, a first external apparatus is a local area network (LAN) connected through a USB apparatus and has a MAC address of 112233445566. The apparatus is authenticated by inputting a password, and its authentication status is valid. Also, database access time is 1 Aug. 2006, 13:42:20. Furthermore, the external apparatus requests registration of the apparatus. 
         [0065]    Table  520  represents a database for connection security of an external apparatus. 
         [0066]    Reference numeral  521  represents a sequence of an external apparatus connected to the GPS apparatus. Also, reference numeral  522  represents a connection recognition name of the external apparatus, and reference numeral  523  represents an authentication method when the external apparatus is connected to the GPS apparatus. Reference numeral  524  represents existence of an authentication key according to the authentication method. Reference numeral  525  represents registration time of the authentication key. Reference numeral  526  represents a validity term of the authentication key. Reference numeral  527  represents requirements that the current external apparatus requests. 
         [0067]    For example, a first external apparatus is a LAN connected through a USB apparatus, and is authenticated by inputting a password, which is also an authentication key for the external apparatus, i.e., a connection password is Xx22yy. The registration time of the authentication key is 2 Aug. 2006, 09:30:14, and the validity term of the password extends until 1 Sep. 2006, 09:30:14. That is, the apparatus may be effectively connected using the password within 30 days. 
         [0068]    These databases are stored in a memory of the GPS apparatus, and as shown in  FIG. 4 , and the data may be changed or removed depending on the circumstances. 
         [0069]    According to the present invention, a method and apparatus for providing GPS data using a network can be provided. 
         [0070]    Also, according to the present invention, a method and apparatus for providing GPS data capable of simultaneously providing GPS data to various types of external apparatuses requesting the GPS data using a TCP/IP protocol can be provided. 
         [0071]    In addition, according to the present invention, a method and apparatus for providing GPS data capable of simultaneously providing GPS data to devices that use GPS data in a vehicle having an internal network by means of the internal network of the vehicle can be provided. 
         [0072]    In the drawings and specification, there have been disclosed typically preferred embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation. As for the scope of the invention, it is to be set forth in the following claims. Therefore, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.