JPH09280878A - Route guiding system, and portable communication terminal and guide indication device used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to acquire route guiding information to a destination specified beforehand only by carrying a small portable communication terminal by providing a guide indication device with a function to calculate route guiding information up to the user's destination. SOLUTION: When a user desires to reach a destination through a certain route, he requests to be connected with a guide indication device 50 from his portable communication terminal. The device 50 connects the portable communication terminal. The user requests the device 50 for setting a destination and routes. An operator inputs the destination and routes to a input/output terminal consisting of a keyboard 57 and a display 56 to store them in RAM 60, and starts guiding routes. The portable communication terminal transmits current position information to the device 50 at regular intervals. The device 50 compares the current position information with the information on the destination and routes stored in RAM 60 and map information stored in an external storage device 55, and generates route guiding information to transmit. The portable communication terminal receives the route guide information and outputs it as a speech.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a route guidance system by communication for sequentially instructing a user of a route to a destination using a portable communication terminal, and a portable communication terminal and a guidance instruction device used therein.

[0002]

2. Description of the Related Art Conventionally, a car navigation system has been known as a system for detecting a current position and guiding a route to a destination. The basic functions of the car navigation system include a current position detection function, a route search function, and a route guidance function.

As a current position detection technology, GPS (Glob
al Positioning System (satellite positioning system) is used. FIG. 9 is a block diagram showing the configuration of a general car navigation system. The antenna 100 receives signals from three or more GPS satellites in orbit around the earth, and the GPS signal processing unit 101 measures the time required for the signals to arrive from each satellite to calculate the distance to the satellites. , The current position is estimated from the position of those satellites and the distance to the satellites. The direction sensor 102 detects the direction of the vehicle. GPS
Current position and orientation sensor 102 estimated by the signal processing unit 101
The current position information including the azimuth detected at is sent to the navigation computer 103, and based on the current position information, the related map information is stored in the CD-ROM in the CD-ROM player 104.
, The map included in the map information is displayed on the display 105, and the current position is sequentially plotted on the displayed map.

The route search function calculates the recommended route from the current position to the destination set by the user in the navigation computer 103 based on the map information stored in the CD-ROM in the CD-ROM player 104. The recommended route is plotted on a map displayed on the display 105.

[0005] The route guidance function, when moving along the recommended route calculated by the route search function, at the intersection,
When approaching a turning point, the speaker 106 outputs guidance information such as an intersection, a distance to the turning point, and a turning direction by voice.
More output and easy-to-understand display on the display.

[0006]

However, in order to realize the route search function and route guidance function described in the prior art, a large amount of map information stored in a CD-ROM or the like is necessary, which is why CD-ROM player is essential.
In addition, more detailed map information (road types such as national roads and prefectural roads, road width information, one-way traffic, landmarks along the road,
It is necessary to hold multiple CD-ROMs due to an increase in map information data due to requests for information such as. For this reason, devices for car navigation systems tend to be large, and it is difficult to provide devices having functions equivalent to those of conventional car navigation systems to users who walk or cycle.

The present invention has been made to solve the above-mentioned problems, and a user can obtain route guidance information to a destination designated in advance by simply carrying a small portable communication terminal. The purpose is to provide a system.

[0008]

In order to achieve this object, a route guidance system according to claim 1 communicates between a mobile communication terminal carried by a user and a guidance instructing device, and the user is informed. In the route guidance system for performing route guidance to a destination, the mobile communication terminal is configured to detect the current position detecting means for detecting the current position of the user and the current position information detected by the current position detecting means. Portable communication terminal side transmission means for transmitting to the guidance instruction device, portable communication terminal side reception means for receiving the guidance information transmitted from the guidance instruction device, and guidance information received by the portable communication terminal side reception means And a guide instruction device side receiving means for receiving the current position information transmitted from the mobile communication terminal, and a map information storage means for storing map information. A guide information calculation unit that calculates guide information based on the current position information received by the guide instruction device-side receiving unit, the position information of a destination designated in advance, and the map information stored in the map information storage unit, and A guide instruction device-side transmitting unit that transmits the guide information calculated by the guide information calculating unit to the mobile communication terminal.

In the mobile communication terminal, the current position information of the user is detected by the current position detection means, and the detected current position information of the user is transmitted to the guidance instruction device through the mobile communication terminal side transmission means. In the guidance instruction device, the current position information transmitted by the mobile communication terminal side transmission means is received by the guidance instruction device side reception means, and the received current position information and the position information of the previously designated destination and the map information are received. The guide information is calculated by the guide information calculation means based on the map information stored in the storage means, and the calculated guide information is transmitted to the mobile communication terminal by the guide instruction device side transmission means. The mobile communication terminal side receiving means of the mobile communication terminal receives the guide information transmitted from the guide instruction device side transmitting means, and the output means outputs the received guide information.

In the route guidance system according to the second aspect, the guidance information calculation means of the guidance instruction device calculates voice data for route guidance as guidance information, and the output means of the portable communication terminal outputs the voice data as a voice signal. The audio signal conversion means for converting the audio signal into a sound and a speaker for outputting the converted audio signal as audio.

The voice data for route guidance calculated by the guide information calculating means of the guide instruction device is converted into a voice signal by the voice signal converting means and output as a voice from the speaker.

According to a third aspect of the present invention, there is provided a route guidance system, wherein the output means of the mobile communication terminal synthesizes voice for route guidance based on the guidance information calculated by the guidance information calculation means, and voice synthesis. And a speaker that outputs the generated sound.

The guidance information calculated by the guidance information calculation means of the guidance instruction device of the route guidance system is synthesized as voice for route guidance by the voice synthesis means of the portable communication terminal and output as voice from the speaker.

According to another aspect of the present invention, there is provided a mobile communication terminal, which comprises a current position detecting means for detecting the current position of the user, and a transmitting means for transmitting the current position information detected by the current position detecting means to the guidance indicating device. A receiving unit that receives the guide information calculated and transmitted based on the current position information received in the guide instruction device, the position information of the destination designated in advance, and the map information, and the guide information received by the receiving unit. And output means for outputting.

The current position detecting means detects the current position information of the user, and the transmitting means transmits the information to the guide instruction device. The guidance instructing device calculates guidance information based on the received current position information, target position information and map information, transmits the guidance information, the receiving means receives the guidance information, and outputs the guidance information received by the receiving means. Means to output.

In the portable communication terminal according to claim 5, the output means outputs the voice data of the guidance information received by the receiving means into a voice signal, and the converted voice signal as voice. And a speaker.

The voice data of the guide information received by the receiving means is converted into a voice signal by the voice signal converting means, and the voice signal is output from the speaker as voice.

In the portable communication terminal according to claim 6, the output means outputs the synthesized voice and the voice synthesizing means for synthesizing the voice for the route guidance based on the guidance information received by the receiving means. And a speaker.

The guidance information received by the receiving means is synthesized by the voice synthesizing means as a voice for route guidance, and is output from the speaker as a voice.

According to a seventh aspect of the present invention, there is provided a guidance instructing device, comprising receiving means for receiving current position information transmitted from a mobile communication terminal carried by a user, map information storage means for storing map information, and the receiving means. Guide information calculating means for calculating guide information based on the received current position information, position information of a previously designated destination, and map information stored in the map information storage means, and guide calculated by the guide information calculating means. Transmission means for transmitting information to the mobile communication terminal.

In the guidance instruction device, the current position information transmitted from the transmitting means of the portable communication terminal carried by the user is received by the receiving means, and the received current position information and the position information of the destination designated in advance are stored. The guide information calculation unit calculates guide information based on the map information stored in the map information storage unit, and the transmission unit transmits the calculated guide information to the mobile communication terminal carried by the user.

In the guidance instructing device according to the eighth aspect, the guidance information calculation means calculates voice data for route guidance as guidance information, and the transmission means transmits the voice data to the portable communication terminal.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

2 and 3 show examples in which the system of the present invention is implemented by using a public telephone line as a communication means.

In the route guidance system of the present invention, the user carries the mobile communication terminal 10. The mobile communication terminal 10 is composed of a mobile phone unit 30 corresponding to the function of a conventional mobile phone and a position / orientation detection unit 20 for detecting the position / orientation of the user.

The mobile phone unit 30 receives a mobile phone antenna 42 for transmitting / receiving radio waves with a base station on a public line, a transmission signal for transmission from the mobile phone antenna 42 and a reception signal received by the mobile phone antenna 42. A high-frequency signal processing unit 31 for processing, a multiplexed signal processing unit 32 for multiplexing signals and restoring the multiplexed signals, an audio processing unit 33 for modulating / demodulating an audio signal, and outputting audio. A speaker 34, a microphone 35 that converts voice into an electric signal, a ROM 39 that stores a program that controls the entire mobile communication terminal 10, a CPU 38 that executes a control program, a RAM 40 that stores various parameters for control, and a mobile communication terminal 10. It is composed of a display 36 for displaying the status and the like, and a keyboard 37 for inputting the telephone number of the other party, etc., which are connected by BUS 41.

The position / orientation detection unit 20 includes a GPS antenna 44 for receiving signals from GPS satellites, a GPS signal processing unit 21 for processing the received signals and calculating current position information, and an orientation sensor 22 for detecting the direction of the user. It is provided and connected to the mobile phone unit 30 via the BUS 41.

For example, assume that the mobile phone unit 30 is a PHS (Personal Handy Phone System) mobile phone. The voice of the user is converted into an electric signal by the microphone 35 and input to the voice processing unit 33. In the audio processing unit 33, the signal is converted into a digital signal by 32 kbit / s ADPCM (Adaptive Differential Pulse Code Modulation). The audio signal converted into a digital signal is converted into a TDMA (Time Division Multipl
e Access) and TDD (Timedivisoin Duplex) system, and the mobile phone antenna 42
Sent from. On the contrary, the radio signal received by the mobile phone antenna 42 is input to the multiplexed signal processing unit 32 through the high frequency signal processing unit 31. Input signal is multiplexed signal processing unit
The digital audio signal is restored at 32 and input to the audio processing unit 33. The audio processing unit 33 demodulates the digital audio signal into an analog audio signal, and outputs the demodulated audio signal from a speaker.

In the position / azimuth detecting section 20, the GPS antenna 44 receives signals from three or more GPS satellites on the orbit around the earth. The signal from the GPS satellite includes the position of the satellite and the transmission time of the signal, and the GPS signal processing unit 21 calculates the distance to each satellite from the transmission time from each satellite and the time received by the GPS antenna 44, From the calculated positions and distances of three or more satellites, the position of the GPS antenna 44, that is, the position information of the user carrying the mobile communication terminal 10 is calculated at time intervals of 1 second to several tens of seconds. Latitude and longitude are calculated as the current position information. The moving direction and moving speed of the user can be calculated by sequentially calculating the difference between the positions calculated at intervals of 1 second to several tens of seconds.

In the embodiment of the mobile communication terminal, the position / orientation detecting unit 20 including the GPS antenna 44, the GPS signal processing unit 22 and the orientation sensor 23 corresponds to the present position detecting means in the claims, and is multiplexed. The signal processing unit 32, the high frequency signal processing unit 31, and the mobile phone antenna 42 correspond to the transmitting means of the mobile communication terminal, and the voice processing unit 33 and the speaker 34 correspond to the outputting means of the mobile communication terminal. The mobile phone antenna 42, the high frequency signal processing unit 31, and the multiplexed signal processing unit 32 correspond to the receiving means of the mobile communication terminal.

On the other hand, the guidance instructing device 50 of the present embodiment outputs a voice signal by a public line connection interface 51 for connecting to the public telephone line 80, a voice processing unit 52 for modulating a voice signal and demodulating a voice signal, and outputs a voice. Speaker 53, a microphone 54 for converting voice into an electric signal, a ROM 59 storing a program for controlling the entire guidance instructing device 50, a CPU 58 for executing a control program, a RAM 60 for storing various parameters for control, and a route guidance. An external storage device 55 including a hard disk and a CD-ROM for storing map information for execution, a display for operation by an administrator who manages the guidance instruction device 50 or an operator who operates.
56, a keyboard 57, and a voice synthesizing unit 61 for synthesizing voices for route guidance, each of which is connected by a BUS 65.

The program is ROM59 for performing route guidance.
And the external storage device 55. User's destination,
The route information up to that point is stored in the RAM 60. The route information is calculated based on the current position information, the target position information, and the map information.

Information on the current position of the user is sent to the guidance / instruction device 50 through the public line 80. The current position information of the user sent, the destination of the user stored in the RAM 60, the position information of the destination, the map information stored in the external storage device 55 (the position of each road, national roads, prefectural roads, etc. ROM59 in CPU58 based on type, width of road, traffic regulation, mutual connection of roads, position of intersection, presence of traffic lights, parks, buildings, etc.
Also, the route guidance program stored in the external storage device 55 is executed to generate route guidance information. The generated route guidance information is sent to the voice processing unit 52, and the voice processing unit 52 generates voice for route guidance. For example, when the user reaches an intersection where he / she should make a right turn, a voice such as "turn right at this intersection." Is synthesized. The synthesized voice is
It is sent to the public line 80 through the public line connection interface 51.

The route guidance voice generated by the guidance instructing device 50 and sent to the public line 80 is multiplexed by the base station 90, and the base station antenna 91 is transmitted to the portable communication terminal 10 carried by the user.
Sent by. Mobile phone antenna 42 of mobile communication terminal 10
The signal received at is converted into an audio signal through the high-frequency signal processing unit 31, the multiplexed signal processing unit 32, and the audio processing unit 33, and is output as audio from the speaker 34.

The map information storage means in the embodiment of the guide instruction device corresponds to an external storage device 55 composed of a hard disk, a CD-ROM, etc., and a program stored in the ROM 59 or the external storage device 55. Also, the CPU 58 for executing these programs and the voice synthesizing unit 61 correspond to the guide information calculating means for calculating the guide information in the claims, and the public line connection interface 51, the public line 80, the base station 90, and the base station antenna 91 give guidance instructions. It corresponds to device-side transmitting means, and the voice processing unit 33 corresponds to voice signal converting means. The base station antenna 91, the base station 90, the public line 80, and the public line connection interface 51 correspond to the receiving means of the guidance / instruction device.

The flow of processing in the route guidance system is shown in FIG. When the user desires to reach the destination through a certain route, the user issues a connection request from the mobile communication terminal 10 to the guidance instructing device 50 (S10). In response to the connection request from the mobile communication terminal 10, the guidance instruction device 50 connects the mobile communication terminal 10 (S30). After connecting, the user
A request for setting the destination and route to the guidance instruction device 50 is issued (S
11). For example, a request is sent to the guidance instruction device 50 for the destination and route to the operator of the guidance instruction device.

The operator inputs the designated destination and route from the input / output terminal composed of the keyboard 57 and the display 56 of the guidance instruction device 50 and stores them in the RAM 60 (S3
1) Start route guidance (S32). The mobile communication terminal side also starts transmitting the current position information for route guidance (S
12). The mobile communication terminal 10 transmits the current position information to the guidance instructing device 50 at regular intervals, receives the route guidance information sent from the guidance instructing device 50, and outputs it as voice (S1).
3). The guidance instructing device 50 compares the current position information sent at regular intervals with the destination and route information stored in the RAM 60 and the map information stored in the external storage device 55, and determines that route guidance is required. In this case, the route guidance information is generated and the generated route guidance information is transmitted to the mobile communication terminal 10 (S33). After the user receives the route guidance and reaches the destination (S14), the transmission of the current position information ends. The guidance instruction device 50 also ends the route guidance after the user arrives at the destination.

FIG. 4 shows a processing flow of the mobile communication terminal 10 after the route guidance is started. G from GPS satellite signal
The PS antenna 44 receives the signal, processes the received signal, and calculates current position information (S60). The calculated current position information is transmitted through the multiplexed signal processing unit 32, the high frequency signal processing unit 31, and the mobile phone antenna 42 (S61). The signal transmitted from the guidance instructing device 50 is processed, and it is judged whether or not the route guidance information is included therein (S62). If not included, the process returns to S60. If it is determined that the information is included in S62, the route guidance information is output as voice from the speaker (S63). It is determined from the route guidance information whether or not the destination has been reached (S64), and if it is determined that the destination has been reached, the process for route guidance of the mobile communication terminal 10 ends. If it is determined in S64 that the destination has not been reached, S60
Return to the processing of.

FIG. 5 shows a processing flow of the guidance designating device 50 after the start of the route guidance. The signal sent from the mobile communication terminal 10 is processed, and it is judged whether or not the current position information is included therein (S81).
The process of 81 is repeated. If included, the current position information is compared with the destination and route information stored in the RAM 60 and the map information stored in the external storage device 55 (S8).
2). As a result of the comparison, it is determined whether route guidance information needs to be generated (S83). If it is determined to be necessary, route guidance information is generated (S84), and a voice for route guidance corresponding to the generated route guidance information is synthesized (S85). The synthesized voice is transmitted to the mobile communication terminal 10 (S8
6). If it is determined that the user has arrived at the destination from the current position information (S87), the guidance instruction device
The route guidance process of 50 ends. If it is determined that it has not arrived yet, the process returns to S81. If it is determined in S83 that it is not necessary to generate the route guidance information, the process proceeds to S87.

A simple example will be described below. As shown in FIG. 8, it is assumed that a user wants to move from the A park to the B hotel via the C intersection and the D intersection.
The user goes through the above-mentioned route to the route guidance device side.
B Tell them that you will move to the hotel. The user connects the mobile communication terminal to the route guidance device by making a call from the mobile communication terminal to the route guidance device side that has a pre-assigned telephone number, and through the operator on the route guidance device side, the C intersection , Input destination and route information such as moving to B hotel via D intersection to the route guidance device. When the destination and route information is set in the route guidance device, the route guidance service can be used. The user activates the route guidance function of the portable communication terminal to be carried. While the user connects the mobile communication terminal to the route guidance device, the mobile communication terminal continues to send the user's current position information to the route guidance device at regular intervals (1 second to several tens of seconds).

When the user moves and approaches the intersection C in FIG. 8, route guidance is performed with reference to the destination, route information and map information stored based on the current position information of the user received by the route guidance device. Information is generated. in this case,
Information such as "need to turn left at intersection C" is generated. The generated route guidance information is converted into voice information such as "turn left at the next intersection" and sent to the public line network. The voice information sent to the mobile communication terminal carried by the user through the base station is sent as voice from the mobile communication terminal to the user, "Please turn left at the next intersection."
And output audio.

When the user turns left according to the guidance and moves toward the D intersection, there is no need to turn at the E intersection.
The route guidance device generates information such as "go straight at an intersection" and converts this to voice information such as "please go straight at the next intersection." Please go straight at the intersection of "." Similarly, when the user approaches the D intersection, the voice guides "Please turn right at the next intersection". When the user turns right at the D intersection, goes straight ahead and approaches the destination B hotel, in the same way, “about 200 m ahead B
The route guidance service is terminated as voice information. When the user reaches the destination, the route guidance service ends with the voice output "I'm at the destination".

FIGS. 6 and 7 show another embodiment. The function equivalent to the voice synthesizing unit 61 in the guidance instructing device 50 in FIG. 2 described so far is transferred to the mobile-side voice synthesizing unit 43 in the mobile communication terminal 10 in FIG. In this case, the route guidance information generated in the guidance instruction device 50 in FIG. 7 is transmitted to the mobile communication terminal 10 without being converted into voice unlike the above-described embodiment.
In the mobile communication terminal 10, the received route guidance information is processed in the CPU 38 based on the program stored in the ROM 39, and the processing result is input to the portable side voice synthesizer 43 to generate a route guidance voice. . The generated voice for route guidance is output as voice from the speaker through the voice processing unit 33.

In the embodiment of the mobile communication terminal and the guidance instructing device, the program stored in the ROM 39, the CPU 38 for executing the program, the portable voice synthesizer
43 corresponds to the voice synthesizing means in the mobile communication terminal in the claims, and the programs stored in the ROM 59 and the external storage device 55 and the CPU 58 for executing those programs calculate the guidance information. It corresponds to the means.

In the above embodiment, the destination and route of the user are set via the operator, but various destinations and intersections are coded in advance and those codes are used. It is possible to set the destination and the route by entering the code of the destination and the passing point on the route from the numeric keys of the keyboard 37 of the mobile communication terminal 10 without the operator's intervention. Becomes In addition, if the mobile communication terminal 10 is equipped with an advanced character input / output function (for example, a keyboard for inputting characters, a display capable of displaying figures / characters, etc.), the routing device 50
It is possible to realize the same functions as the keyboard 57 and the display 56 provided in the mobile communication terminal 10 on the mobile communication terminal 10, and it is possible to set the destination and route from the mobile communication terminal 10 carried without the operator. . If the mobile communication terminal 10 is equipped with a display capable of displaying figures / characters, not only voice-based path guidance but also figure / character information route guidance is possible.

Further, although the user previously designated the destination and the route and set the destination and the route through the operator, the user sets the use start position and the destination, and the guidance instruction device side It is also possible to automatically search the route with. In this case, the route search program is stored in the ROM 59 or the external storage device 55 in the route instruction device 50, and the route search program is executed in the CPU 58. The route is automatically searched by referring to the map information stored in 55, and the searched route is stored in the RAM 60. If the user sets conditions such as the use start position, the destination, the route with the shortest distance, and the minimum number of left / right turns, it is possible to search and set the optimal route according to the set conditions. is there.

[0047]

As is apparent from the above description, in the route guidance system according to claim 1, the current position information of the user is detected by the current position detecting means in the portable communication terminal carried by the user. The detected current position information of the user is transmitted to the guidance instructing device through the mobile communication terminal side transmitting means. In the guidance instructing device, the guidance instructing device side receiving means receives the current position information transmitted by the portable communication terminal side transmitting means, and the received current position information, the position information of the destination designated in advance, and the map information. The guidance information calculation means calculates guidance information based on the map information stored in the storage means, and the guidance instruction device side transmission means transmits the calculated guidance information to the mobile communication terminal. The mobile communication terminal side receiving means receives the guide information transmitted from the guide instruction device side transmitting means, and the output means outputs the received guide information.

Therefore, the user does not carry the function of calculating the route guidance information to the destination of the user, but the guidance indicating device is provided, and the user carries a small portable communication terminal to specify in advance. It will be possible to receive route guidance to the destination.

In the route guidance system according to the second aspect, the voice data for route guidance calculated by the guidance information calculation means of the guidance instruction device is converted into a voice signal by the voice signal conversion means of the output means of the portable communication terminal. Since it is converted and output as voice from the speaker, the user can obtain route guidance information as voice from the mobile communication terminal.

In the route guidance system according to the third aspect, the guidance information calculated by the guidance information calculation means of the guidance instruction device is synthesized as voice for route guidance by the voice synthesis means of the output means of the portable communication terminal. Since the speaker outputs as voice, the user can obtain the route guidance information as voice from the mobile communication terminal.

In the mobile communication terminal according to the present invention, the current position information of the user detected by the current position detecting means is transmitted to the guidance instructing device through the transmitting means of the mobile communication terminal, and is received by the guidance instructing device. Since the receiving means receives the guide information calculated and transmitted by the guide instruction device based on the position information, the target position information and the map information, and the output means outputs the guide information received by the receiving means, the user carries it. It becomes possible to obtain route guidance information from the mobile communication terminal.

According to a fifth aspect of the present invention, in the mobile communication terminal, the voice data of the guidance information calculated and transmitted by the guidance instructing device is converted into a voice signal by the voice signal conversion means of the output means of the mobile communication terminal, and the voice signal is output from the speaker. Since the information is output, the user can obtain the route guidance information as voice from the portable communication terminal carried by the user.

In the portable communication terminal according to claim 6, the guide information calculated and transmitted by the guide instruction device is received by the receiving means, and the voice synthesizing means of the output means of the mobile communication terminal is used for route guidance. Since it is synthesized as a voice and is output as a voice from a speaker, the user can obtain route guidance information as a voice from a portable communication terminal carried by the user.

In the guidance instructing device according to claim 7, the receiving means receives the current position information transmitted from the transmitting means of the portable communication terminal carried by the user, and the received current position information and the destination specified in advance are displayed. The guide information calculation means calculates the guide information based on the position information and the map information of the map information storage means, and the transmitting means transmits the calculated guide information to the mobile communication terminal, so that the mobile communication terminal carried by the user It is possible to obtain route guidance information without having a function of calculating route guidance information.

In the guidance instruction device according to the eighth aspect, the guidance information calculation means calculates voice data for route guidance as the guidance information, and the transmission means of the guidance instruction device transmits the voice data to the portable communication terminal. The mobile communication terminal carried by the user can obtain the route guidance information as voice data.

[Brief description of drawings]

FIG. 1 is a flowchart showing a flow of processing in a system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the mobile communication terminal.

FIG. 3 is a block diagram showing the guidance instructing device.

FIG. 4 is a flowchart showing a flow of processing in the mobile communication terminal.

FIG. 5 is a flowchart showing a flow of processing in the guidance instruction device.

FIG. 6 is a block diagram showing a mobile communication terminal according to another embodiment of the present invention.

FIG. 7 is a block diagram showing a guidance instructing device according to another embodiment thereof.

FIG. 8 is a schematic diagram showing an example of route guidance by the route guidance system.

FIG. 9 is a block diagram showing a configuration of a conventional car navigation system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Mobile communication terminal 20 Position and orientation detection unit 30 Mobile phone unit 42 Mobile phone side voice synthesis unit 50 Guidance instruction device 55 External storage device 58 CPU 59 ROM 61 Voice synthesis unit 80 Public line 90 Base station

Claims (8)

[Claims] 1. A communication between a mobile communication terminal carried by a user and a guidance instructing device that calculates guidance information on a route to a designated destination to communicate the route to the designated destination to the user. A route guidance system that provides guidance, wherein the mobile communication terminal transmits current position detection means for detecting the current position of the user and current position information detected by the current position detection means to the guidance instruction device. A mobile communication terminal side transmitting means, a mobile communication terminal side receiving means for receiving the guide information transmitted from the guide instruction device, and an output means for outputting the guide information received by the mobile communication terminal side receiving means. The guide instruction device includes a guide instruction device-side receiving unit that receives the current position information transmitted from the mobile communication terminal, a map information storage unit that stores map information, and the guide. Guide information calculating means for calculating guide information based on the current position information received by the indicating device side receiving means, the position information of the destination designated in advance, and the map information stored in the map information storing means, and the guide information. A route guidance system comprising: a guidance instruction device-side transmission means for transmitting the guidance information calculated by the calculation means to the mobile communication terminal. 2. The guidance information calculation means of the guidance instruction device calculates voice data for route guidance as guidance information, and the output means of the portable communication terminal converts the voice data into a voice signal. The route guidance system according to claim 1, further comprising: a conversion unit and a speaker that outputs the converted voice signal as a voice. 3. An output unit of the mobile communication terminal, a voice synthesizing unit for synthesizing a voice for guidance based on the guide information calculated by the guide information calculating unit of the guide instruction device, and the synthesized voice. The route guidance system according to claim 1, further comprising: a speaker for outputting. 4. The communication between a mobile communication terminal carried by a user and a guidance instruction device for calculating guidance information on a route to a designated destination, and the route of the route to the designated destination is communicated to the user. A mobile communication terminal used in a route guidance system for providing guidance, which transmits a current position detecting means for detecting the current position of a user and current position information detected by the current position detecting means to a guidance instructing device. Transmitting means, receiving means for receiving the guide information calculated and transmitted on the basis of the present position information received by the guide instruction device, the position information of the destination designated in advance, and the map information, and the receiving means for receiving the guide information. And a means for outputting the guidance information. 5. The guide information is voice data, and the output means includes a voice signal conversion means for converting the voice data into a voice signal and a speaker for outputting the converted voice signal as voice. The mobile communication terminal according to claim 4. 6. The output means of the mobile communication terminal comprises a voice synthesizing means for synthesizing a voice for guidance based on the guidance information, and a speaker for outputting the synthesized voice. The mobile communication terminal according to claim 4. 7. A communication between a mobile communication terminal carried by a user and a guidance instructing device that calculates guidance information on a route to a designated destination to communicate the route to the designated destination to the user. A guidance instructing device used in a route guidance system for guidance, comprising: a receiving unit that receives current position information transmitted from the portable communication terminal carried by a user; and a map information storage unit that stores map information. A guide information calculation unit that calculates guide information based on the current position information received by the receiving unit, the position information of a destination designated in advance, and the map information stored in the map information storage unit; A guide instructing device comprising: a transmitting unit that transmits the guide information calculated by the above to the mobile communication terminal. 8. The guide information calculating means calculates voice data for route guidance as guide information, and the transmitting means transmits the voice data to the mobile communication terminal. Guidance device for the route guidance system.