KR20020071996A - Method of Map Information Service Using Mobile Telephone - Google Patents

Abstract

PURPOSE: A method for providing map information in a mobile communication terminal is provided to receive continuous moving picture information by expanding a PUF(Power Up Function), a position information system such as a GPS(Global Positioning System), and a video compression protocol, compressing map information, and transmitting compressed map information. CONSTITUTION: It is retrieved whether an input exists in a map information menu of a video mobile communication terminal through a user interface(401). In the case of retrieving the position of a terminal user(402), a position retrieval menu of a terminal is pushed for requesting a PUF to a base station and performing a position trace method using the PUF(403). Position information of the terminal user is composed as a control command data packet using the PUF and the composed control command data packet is transmitted to a video information server(404). Information in which position information of the terminal user and surrounding map information are combined is received from the video information server(405). The terminal receives video map information and displays received video map information(406). If an end key is inputted(407), the terminal stores received video map information(408).

Description

Method of providing map information of mobile communication terminal {Method of Map Information Service Using Mobile Telephone}

The present invention relates to a mobile communication terminal, and more particularly, to a method of providing map information of a video mobile communication terminal capable of receiving map information on a user's current location or a specific location to be searched when a terminal user is moving or stopped. .

The conventional method of providing map information is a text-oriented service. When a user inputs a location to be known as a text and transmits the text, the corresponding information is searched and transmitted as text.

However, representing two-dimensional positional information in letters has a problem that not only the transmission of meaning is insufficient but also distortion.

In addition, there is a method of transmitting two-dimensional position information graphically as a more advanced form.

However, this conventional technology has a problem that it is difficult to quickly and accurately transfer a large amount of information such as map information in wireless communication having a weak transmission rate compared to wired communication.

Accordingly, the present invention extends a location information system such as a power-up function and a global positioning system (GPS) and an image compression protocol to compress and transmit map information, thereby allowing continuous video information to be received. Its purpose is to provide a method for providing map information of a terminal.

1 is a conceptual diagram illustrating a location information service of a mobile station using a power up function (PUF) according to the present invention;

2 is a block diagram illustrating an H.324 multimedia system.

3 is a block diagram of a map information service of a video mobile communication terminal according to the present invention;

4 is a flowchart for implementing a map information service of a video mobile communication terminal according to the present invention.

5 is a block diagram showing the structure of a control command data packet according to the present invention;

6 is a table illustrating types of command codes input to a command field in the control command data packet of FIG. 5.

7 is a flowchart illustrating a control command transfer process between a video information server and a video mobile communication terminal according to the present invention.

The present invention relates to a video mobile communication terminal, and more particularly, to a method of providing map information of a video mobile communication terminal capable of receiving map information on a user's current location or a specific location to be searched when the terminal user is moving or stopped. will be.

The present invention includes the steps of searching for whether the map information is required in the terminal; If there is a map information search input for a specific location as a result of the search, constructing a control command data packet of an image compression protocol for the input item and transmitting it to an image information server; Retrieving map information of the specific location from the image information server and transmitting the searched map information to a terminal; And displaying the transmitted map information on a display unit of the terminal.

In addition, the present invention, if there is a search result of the map information is requested in the terminal, if there is a map information search input for the user's location, the control command data of the video compression protocol according to the base station requesting the power-up function for the user's location And further comprising constructing the packet.

In addition, the configuration of the control command data packet of the image compression protocol in the present invention comprises a command field for inputting a command code for searching the map information; Characterized in that the data field is input to the user's location information or search for a specific location.

That is, the present invention relates to a map information service using a video compression control protocol in a video mobile communication terminal, and to obtain or retrieve location information on a current position of a mobile station that is moving or stopped using a power-up function (PUF). The present invention relates to a method of receiving desired map information through map information search of a video information server by inputting a specific position to a terminal, constructing a data command packet of a video compression protocol for a corresponding search command, and transmitting the data command packet to a video information server. .

Here, the Power Up Function (PUF) can be described as follows according to the Systems Performance Evaluation Cooperative (SPEC) of the IS-95B.

The power-up function is a function for determining the position (latitude and longitude) of the mobile station. The power-up function is a series of processes for transmitting PUF probes to the base station through the reverse communication channel while increasing the output.

The mobile station performs the PUF by the PUF message (Power Up Function Message) sent from the base station through the talk channel and ends by the PUF completion message (Power Up Function Completion Message).

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a location information service of a mobile station using a power up function (PUF) according to the present invention, FIG. 2 is a block diagram illustrating an H.324 multimedia system, and FIG. 4 is a block diagram of a map information service of a video mobile communication terminal, and FIG. 4 is a flowchart for implementing a map information service of a video mobile communication terminal, and FIG. 5 shows a structure of a control command data packet according to the present invention. 6 is a table showing the types of command codes input to the command field in the control command data packet of FIG. 5, and FIG. 7 shows a control command transfer process between the video information server and the video mobile communication terminal according to the present invention. The procedure diagram is shown.

1 is a conceptual diagram illustrating a location information service of a mobile station using a power up function (PUF) according to the present invention.

Referring to the location tracking method using the power-up function shown as follows.

The primary base station transmits a PUF message to the mobile station (S1).

The switching station notifies the neighboring base station of the monitoring of the PUF probe of the mobile station (S2).

The mobile station transmits a PUF probe to a neighbor base station (S3).

Then, each base station calculates the distance after receiving the PUF probe from the mobile station, and calculates the position of the mobile station by triangulation based on the distance data from the base station from the base station.

The base station receives the location information of the mobile station from the switching center and transmits a PUF completion message (S4).

Among the various video compression protocols to be used in the present invention, for example, H.324, which is a type of video conferencing terminal through a subscribing telephone network, will be described.

2 is a block diagram illustrating an H.324 multimedia system.

As shown therein, recommendations for use in H.324 include: H.263 or H.261 of the image compression codec 201; G.723.1 of the voice codec 202; V.14 or LAPM (Link Access Procedure for Modems) of the data protocol 203; H.245 of control protocol 204, H.223 of multiplex / demultiplex 205; V.34 / V.8 of the modem; And the V.250 of the modem control 206, and the like.

The video compression codec (H.263, H.261) 201 executes coding and decoding of a video signal, and the voice codec (G.723.1) 202 encodes an audio signal input to a microphone and sends it to a speaker. Decodes the output audio signal.

The data protocol 203 supports still picture transfer, file exchange, database access, audio graphics conferencing, remote device control, network protocols, and the like.

Standard data applications include T.120 for real-time audiographics conferencing, T.84 for simple point-to-point still image file transfer, T.434 for simple point-to-point file transfer, and far-end cameras. Users using ISO / IEC TR 9577 network protocols, including H.224 / H.281 for control, Point-to-Point Protocol (PPP) and Internet Protocol (IP), and V.14 or LAPM / V.42. This includes data transfers.

The control protocol (H.245) 204 is a path for sending and receiving control commands for displaying image information, and provides end-to-end signaling for proper operation of the H.324 terminal. Send and receive all other end-to-end system functions, including switching analog voice-only telephony mode.

This protocol provides capacity exchange commands, directive signals, and messages to describe and open the contents of logical channels.

In addition, the multiplex / demultiplex protocol (H.223) 205 multiplexes the transmitted video, audio data, and control stream into a single bit stream, and demultiplexes the received bit stream into various multimedia streams.

Other features include logical framing, sequence numbering, error detection, and error correction through retransmission.

In addition, the modem (V.34) 207 synchronizes an H.223 multiplex transmission bit stream as an analog signal through a GSTN converter, and transmits and receives a received analog signal to a multiplex / demultiplex protocol device. Convert to a bit stream.

The modem control (V.250) 206 is used to control or sense the modem / network interface when the network signaling modem and the V.8 / V.8 bis functional elements are separated into physical items.

In addition to H.324, video protocols such as H.323, 3G324M, SIP, WAP Browser, and Internet Applications can be extended.

3 is a block diagram of a map information service of a video mobile communication terminal according to the present invention.

As shown therein, the video mobile communication terminal 10 includes a key input unit 301 serving as an interface with a user; An image compression unit 302 indicating an image signal compression protocol; A display unit 303 for displaying a result of processing an input command and map information transmitted from the image information server 30; A memory 304 for storing map information; A transmitting / receiving unit 305 for transmitting / receiving with the base station 20; The control unit 306 oversees the system of the terminal as described above.

Referring to the structure of the video mobile communication terminal 10 shown in more detail as follows.

The key input unit 301 is an input unit that receives a command for searching for map information of a user.

The image compressor 302 decodes the image compressed data received from the base station 20 or compresses the video signal from the video terminal and transmits the image signal to the base station 20.

In the present invention, an H.324 system supporting H.261 / H.263, which is a compression protocol, is used as a video protocol and used for a map information service.

The display unit 303 displays the processing result of the input command and the image map information from the image information server 30.

The memory 304 is generally divided into ROM and RAM. The basic real-time processing operating system, terminal call processing software, and software for controlling the hardware of the terminal are stored in the ROM, and the variables and states of these programs are stored in RAM. If necessary, bring up and operate.

The video data of the map information is received from the video information server 30 and stored in the memory 304.

The transmitter / receiver 306 requests a power-up function to the base station 20, transmits a data packet signal for map information, or receives a map information signal from the image information server 30 through the base station 20.

The controller 307 collectively controls the system of the video mobile communication terminal.

4 is a flowchart for implementing a map information service of a video mobile communication terminal according to the present invention.

First, it is searched whether there is an input through the user interface in the map information menu of the video mobile communication terminal (step 401).

That is, the terminal searches whether there is anything input by the user interface to request the map information service.

In order to search the location of the current terminal user, press the location search menu of the current terminal to request the power-up function to the base station to perform the location tracking method using the power-up function (steps 402 and 403).

The position information of the current terminal user determined using the power-up function is composed of a control command data packet (command packet of H.245, which is a kind of video control protocol), and transmitted to the video information server (step 404).

Thereafter, the image information server receives the information in the form of combining the current terminal user's location with the surrounding map information (step 405).

In this case, the current terminal user's location may be transmitted to the terminal by displaying an asterisk or circle at a corresponding point on the image of the surrounding map information.

When the user gets lost and wants to find out where he is or if he wants to know what buildings or roads are around the user's location, he uses the power-up function to determine the location of the current terminal user. By sending to the video map server can receive the map information indicating the location of the current terminal user.

The terminal receiving the image map information is displayed on the display unit (step 406).

When the end key is input, the received image map information is stored and finished. (Steps 407 and 408).

In addition, in the step 402, if you want to search the map information for a specific location, press the map search menu of the terminal to enter the name or business name of the location you want to search (step 409).

Then, a command code for searching the map and data of ASCII characters of 10 characters (10 bytes) are input to the command field and the data field, which are image map information control command data packets, respectively, and are transmitted to the image information server (step). 404)

The video information server receives map information of the corresponding location (step 405).

The terminal receiving the image map information is displayed on the display unit (step 406).

When the end key is input, the received image map information is stored and finished. (Steps 407 and 408).

5 is a block diagram showing the structure of a control command data packet according to the present invention.

As shown therein, the structure of the control command data packet is divided into a command field and a data field.

In this case, the command code inputted to the command field is 8 bits, and the data field is 16 bits. The map occupies 10 bytes because a place name must be entered in a map search for a specific location.

FIG. 6 is a table illustrating types of command codes input to a command field in the control command data packet of FIG. 5.

As shown in the figure, for example, 0x00 is used as a command indicating a user's location, 0x01 is used as a command representing a resolution of a map, 0x02 is written as a direction display command, and a command for searching a map of a desired location is searched. Use 0x03.

7 is a flowchart illustrating a control command transmission process between a video information server and a video mobile communication terminal according to the present invention.

As shown in the drawing, first, when a video map information is requested from a video mobile communication terminal (video information player), a H.245 command or one of a plurality of video control protocols (Wireless Application Protocol) is provided through a swap command. The video map information request to the video information server. (S1)

Then, the video information server sends an acknowledgment signal (ACK) to the video mobile communication terminal (S2), searches for the corresponding map information stored in the video information server, finds it, and sends it to the video mobile communication terminal (S3).

When the video mobile communication terminal receives the map information, it sends an acknowledgment signal to the video information server (S4) and displays the map information on the terminal display unit.

As described above, the present invention transmits the information on the current location of the user who is moving or stopped using the power-up function in the video mobile communication terminal to the video information server to receive map information indicating the current location of the user or Regarding the method of receiving map information by inputting place name or business name of specific location to search and sending to video information server, it is possible to provide map information faster by using video compression protocol in terms of service speed. It relates to a method of providing map information.

As described above, the present invention relates to a method of receiving map information on a current location of a user moving or being stopped or a location to be searched through a video information server using an image compression protocol. When you're lost and want to find out where you are, or if you want to know what buildings or roads are around your location, you can use the power-up function to find out where you are.

And by sending the location information of the user identified using the power-up function to the image map server can receive the map information indicating the current location of the terminal user, and also provides a map information search command for the specific location that the user wants to search By sending to the video information server, the map information for a specific location can be serviced. At this time, the map information is compressed and transmitted using the video compression protocol in terms of the speed of the video map service. Can be.

Claims (3)

Retrieving whether map information is requested from the terminal; If there is a map information search input for a specific location as a result of the search, constructing a control command data packet of an image compression protocol for the input item and transmitting it to an image information server; Retrieving map information of the specific location from the image information server and transmitting the searched map information to a terminal; And displaying the transmitted map information on a display unit of the terminal. According to claim 1, The search results whether the map information is requested from the terminal, When there is a map information search input for the user's location, the mobile communication further comprises the step of configuring a control command data packet of the video compression protocol in response to the base station requesting the power-up function for the user's location Map information providing method of the terminal. The method according to claim 1 or 2, The configuration of the control command data packet of the image compression protocol includes a command field to which a command code for retrieving map information is input; Method for providing map information of a mobile communication terminal, characterized in that consisting of a data field for inputting a user's location information or a search term for a specific location.