JPH08110231A - Navigation system - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to easily obtain the latest information in the surrounding area in the city and to use the information terminal and its terminal which are excellent in portability and do not require a large capacity memory such as CD-ROM. The navigation system that was used. [Structure] An information terminal is provided with two input means, a TV or FM multiplex broadcast and a mobile phone, and separately inputs map information and guide information including position information for specifying a position on a map, and further position detecting means. In preparation for this, the terminal position information is measured, and the guide information and the terminal position information are superimposed and displayed according to the position information on the map output from the display unit. A guidance system for providing information includes an information storage unit and a search unit, and is connected to an information terminal by TV or FM broadcasting for map information and a mobile phone line for guidance information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a guidance system suitable for obtaining the latest guidance information around the current position, and it provides map information and guidance obtained by using TV broadcasting or FM multiplex broadcasting and a mobile phone line. The present invention relates to a navigation system including a portable information terminal that displays information on a display.

[0002]

2. Description of the Related Art When traveling to a strange land, it is common to carry a map of the land and a guidebook. Recently, vehicle-mounted navigation systems have become widespread due to the development of position detecting devices using satellites and the like. The navigation system reads out map information stored in a large-capacity storage medium such as a CD-ROM and displays it on a screen, and also detects the current position of the vehicle with a position detection device and displays it on the map screen. Since this navigation system displays a map of the surrounding area centering on the current position, it is very convenient because it is easy to check the route even while driving. Recently, it is also possible to display guide information on famous tourist spots, which can be used as a substitute for a guidebook.

However, the guide information that is stored is limited, and it is difficult to quickly obtain unstored stores and the latest information, as well as events and events that are currently taking place, and so on. You will have to go up to or contact us by phone. As a technique for adding such unrecorded information on a display map, "Japanese Patent Application Laid-Open No. 04-088391" is disclosed. This is to write the latest information on the map screen using a mouse or the like and to store the added information in an externally connected device such as an IC card, an electronic notebook, a personal computer or the like. Also telephone and FA
As a technique for obtaining a map of a destination using X
5-011693 gazette "is shown. This is a map transmission system that sends out a map around a destination inquired by telephone by FAX.

In addition, portable information terminals are becoming popular due to the development of LSI devices. This information terminal stores information in a card-shaped memory element or an optical storage element and can be carried easily. Of course, if guide information or map information is selected as the information to be carried, it is possible to provide a guidebook function. The information terminal can be used as a navigation system by providing the information terminal with a function of displaying a position detection device and a detected position on a map by a program.

[0005]

[Patent Document 1] Japanese Unexamined Patent Application Publication No.
In "-0888391 publication," it is not possible to obtain the latest information, that is, the information that the user does not know, from the system, not to mention the trouble of rewriting by yourself. Therefore, there is a possibility that the event or event of the day or the latest map information cannot be obtained. It was

As a countermeasure against this, Japanese Patent Laid-Open No. 05-
However, there is a case where information cannot be obtained in a place where there is no FAX such as in a car. So F
There is a method to display the AX data on the display of the navigation system, but the amount of information that you want to obtain is smaller than the amount of data that transmits images over the telephone line (very heavy as a system), and it is said that this is an efficient information acquisition means. hard.

Image data such as map information can be transmitted relatively easily if a wide band line such as TV broadcasting is used. However, the combination of map information and guidance information required by the user of the navigation system is As the number increases, the number becomes innumerable, so I think that it is difficult to realize such a system no matter how many multiplexing and compression techniques are used.

Further, even if the capacity of the CD-ROM, the card memory device and the optical storage device becomes large, the size of the map and the guide information is inevitably determined from the size that the navigation system can be easily carried, and the map and the guide information. There is a problem that it becomes old and completely useless.

The present invention makes it possible to easily obtain the latest information around the destination even while traveling, and to carry it easily without using a large-capacity memory such as a CD-ROM. It is to provide a portable information terminal that can be displayed over a map on a display screen and a navigation system using the same.

[0010]

In order to achieve the above object, the information terminal has an input means for inputting guidance information including position information from an external or communication line, and a second inputting map information from an external or communication line. The guide system identifies the position on the map by providing the input means, the recording means for storing the guide information and the map information, and the display means for displaying the guide information on the map information in accordance with the position information included in the guide information. Storage means for storing guide information including at least position information, second storage means for storing map information, and search means for reading and outputting specified guide information and map information. It is a feature.

Further, the information terminal and the guidance system are characterized in that the guidance information is connected by a mobile telephone line, the map information is connected by TV broadcasting or FM multiplex broadcasting, and two pieces of information are superposed on each other by the information terminal.

[0012] Furthermore, the search designation method for the search means is provided with input means for inputting inquiry information including position information for designating the position from the information terminal, and the information terminal is provided with position detecting means for measuring the current position. , The current position information obtained here is included in the inquiry information and is output. Further, the information terminal is characterized in that the position information is generated by pointing on the displayed map instead of the position detecting means, and is output by including it in the inquiry information.

[0013]

With the above structure, the position information stored together with the storage means of the guide system is added to the guide information sent from the guide system to the information terminal through the communication line. This guide information is input from the input means of the information terminal and sent to the display means. Further, the map information is sent to the information terminal through another communication line, inputted from the second input means and similarly sent to the display means. The display means can display the inputted guidance information at a position designated by the position information added thereto, in a manner of being superimposed on the map information. As a result, by connecting the output of the guidance system and the input means of the information terminal with the guidance information using a mobile telephone line or the like, and receiving the map information using TV broadcasting or FM multiplex broadcasting, the CD-
By not requiring a large-capacity memory such as a ROM, it is easy to carry around, and if the information is updated by the guidance system, the user can easily get the latest information on the destination even while traveling, and It is possible to obtain the effect that the map information and the guide information can be displayed in an overlapping manner on the display screen.

Further, when making a guide inquiry to the guide system, the present position measured by the position detecting means is added and sent, and in the search means of the guide system, the present position information added to the inquiry information and recorded in the storage means. Based on the position information, based on the result, guidance information corresponding to the position information is read out from the storage means and output together with the position information to an information terminal connected by a communication line. As a result, the guidance information near the current position can be automatically extracted and received by the guidance system.

Further, the position specifying means for specifying the position on the map displayed on the information terminal can send the inquiry information including the position information to the guide system to obtain the guide information for the specified place and its surroundings. As a result, there is an effect that it is possible to easily obtain the guidance information about the place and its surroundings by only pointing one point on the map displayed on the information terminal.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the navigation system of the present invention. Reference numeral 1 denotes an information terminal used in the navigation system of the present invention, which has at least two types of input means for wireless communication and has a function of displaying input information in an overlapping manner. Reference numeral 4 is one of the information inputting means, for example, a connecting means of a bidirectional communication line such as a mobile phone or a cordless phone. 2 is the antenna. A second information input unit 5 is a wireless communication unit having a relatively wide band such as a TV broadcast receiver or an FM multiplex broadcast receiver.
Although communication in 5 may be performed in a single direction as compared with 4, communication bandwidth is wide, and it is desirable that the data transmission amount is sufficient to send image data of map information. 3 is the antenna. A control unit 8 inputs the map information and the guidance information output from the input unit 4, the second input unit 5, and the storage unit 7, and outputs the processed result to the display unit 9 for display. It also outputs to the storage unit 7 as necessary. For example, when the input means 4 is an analog type mobile phone / cordless phone, the control unit 8 demodulates the signal phase-modulated in the voice band and converts it into a digital signal. The digital data output from 4 is subjected to error correction, transfer rate conversion, and the like. The control unit 8 also converts the second input unit 5 into a digital signal when the second input unit 5 is a TV broadcasting receiver. The converted digital data is output to the storage unit 7, conversely the same digital data is input from the storage unit 7, at least two or more digital data are processed, and the result is output to the display unit 9. Reference numeral 7 denotes a storage unit, which inputs and writes the information data converted by the receiving control unit 8 by the input unit 4 and the second input unit 5, or reads out the information data as necessary and outputs it to the control unit 8. It is for temporarily storing information and the like. This is a CD-RO generally used in navigation systems.
It does not have to have a large capacity like M, and a capacity that can store at least one piece of map information and guide information to be superimposed on it and that does not impair the portability of the information terminal 1 is sufficient. Further, 6 is a position detecting means, which measures the current position of the information terminal and outputs the terminal position information to the control unit 8. 10
Is an input unit such as a keyboard, a touch sensor, a mouse, etc., which selects guide information, searches a map, inputs characters, and specifies a position on the map. The position detecting means 6 and the input unit 10 can be provided as needed. Reference numeral 12 is a mobile telephone exchange, which connects and exchanges with a mobile telephone via a wireless line, converts the voice signal into a voice signal, and connects the voice signal to a general public telephone line. 11 is the antenna. A general public telephone line exchange 13 is connected to the mobile telephone exchange 12. Reference numeral 20 is a telephone line, 16 is map information indicating major roads, highways, trains, urban areas, etc., and government agencies,
This is a guidance system that provides guidance information that describes stations, banks, restaurants, tourist information, etc. Reference numeral 18 is a map information storage unit that stores map information, and 19 is a guide information storage unit that stores guide information. Further, 17 is a search unit for searching and outputting necessary information from the map information storage unit 18 and the guidance information storage unit 19. Reference numeral 15 is a TV or FM broadcasting station (hereinafter, TV or FM is abbreviated as “TV / FM”), and 14 is an antenna thereof, which transmits information output from the guidance system 16.

The operation of the first embodiment will be described below. First, the mobile phone 4 calls the guidance system 16. After the call is connected, the search unit 17 is designated by dialing the desired map and guidance, such as requesting the guidance of the French restaurant on the map of the West exit of Shibuya station. The search unit 17 transmits to the information terminal 1 via the mobile phone line the map code corresponding to the frequency of the broadcasting station that broadcasts a lot of map information including the designated map in a time division manner and the requested map. As the map information, after the map information request from the information terminal or in advance, the map information that is in charge of several broadcast stations is transmitted. One T
The V / FM broadcasting station 15 is in charge of 100 maps of Tokyo, for example, and each map has a corresponding map code, which is time-division multiplexed and transmitted from the antenna 14 of the TV / FM broadcasting station 15. The information terminal 1 sets the reception frequency of the TV / FM receiver 5 according to the frequency of the broadcasting station sent from the guidance system and the map code corresponding to the requested map, and the time-division multiplexed map information is sent. The one that matches the map code, for example the Shibuya Station west exit city map, is received and input to the control unit 8. For guidance information, search section 17
The guidance information of the French restaurant around the west exit of Shibuya station is read from the guidance information storage unit 19, received by the mobile phone 4 through the mobile phone line, and input to the control unit 8. This guidance information includes at least position information. The guide information including the map information and the position information input to the control unit 8 is first checked for the position information, and a mark is displayed at the corresponding position on the map. After that, the guide information is displayed on the screen. At this time, since the point marked previously is clear in advance, it is possible to display the guide information in a range that does not hide this point. In addition, image data such as map information, which has a relatively large amount of information from the guidance system and has a common request, is TV or FM multiplex broadcasting, and there is a small amount of information and various types of information are requested for each user. We think that the utilization efficiency of information transmission is good by having it sent and displaying it on the information terminal. Further, the current position measured by the position detecting means 6 is added to the inquiry information and transmitted from the control unit 8 to the search unit 17 of the guidance system 16 via the mobile phone 4. Guidance information including a TV / FM broadcasting station frequency, a map code, and position information required to obtain a map around the designated current position and the current position is output to the control unit 8 via the mobile phone 4. The control unit 8 sets the reception frequency of the TV / FM receiver 5 to the transmitted frequency, receives and demodulates only the map code in the transmitted time division multiplex map group, and the control unit 8 Output to. The guide information including the map information and the position information input to the control unit 8 is first checked for the position information, and a mark is displayed at the corresponding position on the map. After that, the guide information is displayed on the screen. Since the current position is automatically displayed on the information terminal 1 by automatically performing the work so far, a simple navigation system can be configured. Further, the position displayed on the display unit 9 can be designated using the input unit 10, and the guidance information can be read from the designated position information on the map.

Next, FIG. 2 is a functional block diagram showing an example of the configuration of the information terminal 1 shown in FIG. In FIG. 2, reference numeral 2 is an antenna of the mobile phone 4, 401 to 410 are constituent elements of the mobile phone 4, 401 is a receiving unit that amplifies radio waves received from the antenna and performs frequency conversion, and 402 is input from the receiving unit. A modulation / demodulation unit that demodulates the received signal or performs phase modulation with data to be transmitted, and a transmission unit 404 that amplifies and transmits the signal modulated by the modulation / demodulation unit 402 after frequency conversion. Reference numeral 403 denotes a voice processing unit that processes telephone voice. In a digital mobile phone, the voice from the microphone 406 is compressed and output to the modulation / demodulation unit 402, or the modulation / demodulation unit 402.
The demodulated data from the
Output to 5. A mobile phone control unit 408 controls the operation of the mobile phone 4, and controls the whole in accordance with an operation from the key input unit 407. A data output unit 410 outputs the digital data demodulated by the modulation / demodulation unit to the outside.
Reference numeral 409 is a data input unit for modulating digital data from the outside with a modulator / demodulator and transmitting it. Also 3 is TV
/ FM receiver 5 antenna, 501 to 502 is TV /
Reference numeral 501 is a constituent element of the FM receiver 5, 501 is a TV / FM receiving unit that amplifies and frequency converts a radio wave received from an antenna, and 502 is a demodulating unit that demodulates a received signal input from the TV / FM receiving unit 501. Output a signal to the outside.
Reference numerals 601 to 602 are constituent elements of the position detecting means 6,
A position sensor 601 is a position sensor that measures the current position using radio waves from the satellite of the information terminal 1, and a small GPS antenna that can be carried at present is also being developed. A position sensor output 602 inputs and reads data such as the number of north latitudes and the number of east longitudes read and converted into position information provided by the map information of the present navigation system, and outputs the position information. 801 to 806
Are components of the control unit 8. A decoding unit 802 is composed of a data decoding unit 804 and an error correction unit 805.
The data decoding unit 804 is the data output unit 410 of the mobile phone 4.
The information part is extracted from the digital data output from the device in accordance with a method previously determined by the mobile phone standard, and the error correction unit 805 outputs the result of correcting the data error generated during wireless transmission to the control circuit 801. Reference numeral 803 denotes an encoding unit, and the control circuit 801 converts digital data to be sent to the mobile phone 4 into a format determined by the mobile phone standard and outputs the data to the data input unit 409 of the mobile phone 4. 80
Reference numeral 6 is a conversion circuit for converting the signal of the TV / FM receiver 5 into digital data, which is output to the control circuit 801. 7
Is a storage unit that stores at least guidance information, and uses a readable and writable semiconductor memory. The storage unit 7 is connected to the control circuit 801 to read / write information data. Further, 9 is a display unit for displaying map information, guidance information and the like, and 10 is an input unit such as a keyboard, a touch sensor and a mouse.

Although the digital portable telephone is used in the above-mentioned embodiments, the present invention can be applied if the digital data can be sent through the telephone line.

FIG. 3 is a functional block diagram showing a configuration example showing an example in which an analog type mobile phone is used in place of the digital type mobile phone. The difference between the configuration example shown in FIG. 3 and the configuration example shown in FIG.
Is that the mobile phone 4b is an analog type, and that the storage medium 701 can be detached from the storage unit 7 for storing maps and guidance information. As the modulation system of the mobile phone 4b is replaced by the FM modulation system, the reception unit 401b, the modulation / demodulation unit 402b, and the transmission unit 404b are changed to support FM modulation.
Further, the output from the external voice input / output unit 411 is configured to be output to the control unit 8b. This is because current analog mobile phones can use only the voice band required for a call for data communication. The voice band signal output from the mobile phone 4b is phase-modulated with a digital signal as in the case of a general telephone line. This signal is demodulated by the modem 806 to obtain a digital signal, and the error correction unit 805 corrects a data error generated during wireless transmission and outputs it to the control circuit 801. The operation thereafter is the same as that of the embodiment shown in FIG. 2, and after the mobile phone 4b is operated and the telephone line is connected, the guidance information is designated from the input unit 10. The designation information is converted into a predetermined data format by the encoding unit 803 via the control circuit 801, and then converted into a voice phase modulation signal by the modem 806. This signal is input from the external voice input unit 411 of the mobile phone 4b and input to the search unit 17 of the guidance system 16 through the telephone line. The search information is read from the guidance information storage unit 19 by the search unit 17, received by the mobile phone 4b via the mobile phone line, and input to the control unit 8b. This guidance information includes at least position information. The guide information including the map information and the position information input to the control unit 8b is first checked for the position information, and a mark is displayed at the corresponding position on the map. After that, the guide information is displayed on the screen. At this time, since the point marked previously is clear in advance, it is possible to display the guide information in a range that does not hide this point. Further, in this embodiment, the storage unit 7b is a disk drive, and the storage medium 70
The recording medium 701 is a magnetic storage disk, and the recording medium 701 is removable from the navigation system. As a result, it is easy to transfer the received position information to another navigation system or information terminal via the storage medium 701.

Further, although the cellular phone has been used in the above embodiments, the same applies to a car phone and a cordless phone.

The operation of the present invention will be described below with reference to FIGS. 1, 2 and 4.
Will be described in detail together with. FIG. 4 is a flow chart showing the flow of operation of the embodiment shown in FIGS. In FIG. 4, 1
Is a mobile terminal (operation thereof), 12 and 13 are mobile phone exchange stations (operation thereof), 15 is a TV / FM broadcasting station (operation thereof), 16
Is a guidance system (operation). First, in order to start the navigation system on the mobile phone 4 of the information terminal 1, an operation command is given to the control circuit 801 from the input unit 10 such as a keyboard. This digital data is encoded by the encoding unit 80.
3, the data is converted into a format defined by the mobile phone standard, passes through the data input unit 409, is modulated by the modulator / demodulator 402, is frequency-converted and amplified by the transmitting unit 404, and is transmitted from the antenna 2. The mobile phone exchange 12 receives this transmission signal using the antenna 11, and the mobile phone line is connected. "Navigation system start request 30"
The information terminal 1 is connected to the mobile phone exchange 12 and then to the guidance system 16. General public telephone line 20 from mobile phone exchange 12 to exchange 13 and guidance system
To use. Next, the information terminal 1 analyzes the output of the position sensor 601 such as a GPS antenna using radio waves from the satellite by the position detection unit 602 to measure the current position of the information terminal, and obtains the terminal position information from the mobile phone line. "Position information transmission 31" which is similarly sent to the guidance system 16. Timely, the terminal position information data is stored in the storage unit 7 via the control circuit 801. In the guidance system 16, from the received terminal position information, a large number of map information (for example, all 500 sheets in Tokyo) including the map where the information terminal 1 itself exists is provided to the TV / FM broadcasting station 1.
Come to 5. This map information may be stored and stored in a predetermined TV / FM broadcasting station. TV / FM broadcasting station 15
Attaches a lot of map information, map code for each map,
Broadcast using time division multiplexing or code division multiplexing. The guidance system 16 provides the frequency of TV / FM broadcasting that broadcasts a lot of map information including the map corresponding to the terminal position information sent from the information terminal 1 and the map code added to the map corresponding to the terminal position information. , Send data to the information terminal 1 using the mobile phone line. The transmitted broadcasting station frequency and map code are received by the receiving unit 401 of the mobile phone 4, amplified and then frequency-converted, demodulated by the modulator / demodulator 402, and output from the data output unit 410 to the control unit 8. It The data decoding unit 804 extracts the information part from the digital data output from the data output unit 410 of the mobile phone 4 according to a method previously determined by the mobile phone standard, and the error correction unit 805 detects a data error generated during wireless transmission. The corrected result is output to the control circuit 801. The control circuit 801 controls the TV / FM receiver 5 based on the inputted broadcasting station frequency data.
Set the reception frequency of the TV / FM receiver 501 of "TV / FM
FM frequency setting 32 ”is received, and only a large number of pieces of map information received from the antenna 3 that match the input map code (eg, one Kanda Surugadai, Chiyoda-ku, Tokyo: blank map) is received, and the demodulation unit 502 The signal is demodulated by, and converted into a digital signal by the conversion circuit and input to the control circuit 801. Timely, the map information data is stored in the storage unit 7. Next, the control circuit 801 is provided with designation information for selecting guidance information (eg, bank, post office) desired by the user from the input unit 10 such as a keyboard. This data is also sent to the guidance system 16 using the mobile phone line in the same manner as “guidance selection request 33”. In the guidance system 16, the search unit 17 reads the guidance information requested by the user from the designation information from the guidance information storage unit 19, passes through the mobile phone 4 and the decryption unit 802 using the mobile phone line, and the control circuit 801. Entered in. Here again, the guidance information data is stored in the storage unit 7 at appropriate times. The control circuit 801 superimposes the input map information, guide information, and terminal position information on the map according to the position information. The result of superposition is output to the display unit 9. When the guidance request is changed or guidance information is added, the "guidance change / addition request 34" (eg, restaurant) is retrieved from the guidance system again using the mobile phone line. At this time, the map information and the terminal position information are read from the storage unit 7, and the guide information and the terminal position information are superimposed on the map according to the position information. The result of superposition is output to the display unit 9. Here, if there is no command from the information terminal 1 for a certain period of time, a request for disconnecting the mobile phone line is automatically issued “End guidance request 3
5 ”and disconnect the line. At this time, the display unit 9 holds the last screen displayed by the terminal or the storage unit 7
The guidance information is displayed within the range of the information amount stored by. At this time, if further new guidance information (eg, tourist attraction) is desired, the "guidance selection request 36" is performed again to reconnect the mobile phone line. Further, the information terminal 1 detects the position by the position detecting means 6 at regular time intervals and updates it with new terminal position information. Finally, when the operation command "navigation system end request 37" is given by the input unit 10 for the operation to end the navigation system, the line with the mobile phone exchange and the guidance system is disconnected and the operation is ended.

[0024]

As described above, according to the present invention, the guide information sent from the guide system to the information terminal through the communication line is added with the position information stored together in the storage means of the guide system. This guide information is input from the input means of the information terminal and sent to the display means. Further, the map information is sent to the information terminal through another communication line, input from the second input means, and similarly sent to the display means. The display means can display the inputted guidance information at a position designated by the position information added thereto, in a manner of being superimposed on the map information. As a result, by connecting the output of the guidance system and the input means of the information terminal with the guidance information using a mobile phone line or the like, and receiving the map information using TV / FM broadcasting, a large information such as a CD-ROM can be obtained. Since it does not require a capacity memory, it is easy to carry around, and if the information is updated by the guidance system, the user can easily get the latest information of the destination even while traveling, and the obtained information is displayed on the display screen. It is possible to obtain the effect that the map information and the guide information can be displayed on top of each other.

When inquiring guidance to the guidance system, the current location measured by the position detecting means is added and sent, and in the searching means of the guidance system, the current position information added to the inquiry information and recorded in the storage means. Based on the position information, based on the result, guidance information corresponding to the position information is read out from the storage means and output together with the position information to an information terminal connected by a communication line. As a result, the guidance information near the current position can be automatically extracted and received by the guidance system.

Further, the position specifying means for specifying the position on the map displayed on the information terminal can send the inquiry information including the position information to the guide system to obtain the guide information about the specified place and the surroundings. As a result, there is an effect that it is possible to easily obtain the guidance information about the place and its surroundings by only pointing one point on the map displayed on the information terminal.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of an information terminal used in the present invention.

FIG. 3 is a configuration diagram of an information terminal used in the present invention.

FIG. 4 is a flowchart showing an example of the operation of the exemplary embodiment of the present invention.

[Explanation of symbols]

1 ... Information terminal, 2 ... Mobile phone antenna, 3 ... TV / F
Antenna of M receiver, 4 ... Mobile phone, 5 ... TV / FM receiver, 6 ... Position detecting means, 7 ... Storage unit, 8 ... Control unit, 9
... Display unit, 10 ... Input unit, 11 ... Mobile phone exchange station antenna, 12 ... Mobile phone exchange station, 13 ... Exchange station, 14 ... T
V / FM broadcasting station antenna, 15 ... TV / FM broadcasting station,
16 ... Guidance system, 17 ... Search unit, 18 ... Map information storage unit, 19 ... Guidance information storage unit, 20 ... Telephone line, 401
... reception unit, 402 ... modulation / demodulation unit, 403 ... audio processing unit, 4
04 ... Transmission unit, 405 ... Speaker, 406 ... Microphone, 4
07 ... key input unit, 408 ... mobile phone control unit, 409 ...
Data input unit, 410 ... Data output unit, 501 ... TV /
FM receiver, 502 ... Demodulator, 601 ... Position sensor, 6
02 ... Position detecting unit, 801, ... Control circuit, 802 ... Decoding unit, 803 ... Encoding unit, 804 ... Data decoding unit, 805
... error correction unit, 807 ... conversion circuit, 4b ... mobile phone (analog system), 401b ... reception unit, 402b ... modulation / demodulation unit, 404b ... transmission unit, 7b ... storage unit, 701 ... recording medium, 8b ... decoding unit, 806 ... Modem, 30 ... Navigation system start request, 31 ... Position detection / position information transmission, 32 ... TV / FM frequency setting, 33 ... Guidance selection request, 34 ... Guidance change / addition request, 35 ... Guidance request end,
36 ... Guidance re-request, 37 ... Navigation system end request.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location G09B 29/00 A 29/10 A H04Q 7/34 7/38 H04M 11/00 302 H04N 5/445 Z 7/08 7/081 H04B 7/26 109 MH04N 7/08 B

Claims (9)

[Claims] 1. At least a first communication means (4) and a second communication means (4).
Communication means (5), storage unit (7), and control unit (8)
In the information terminal (1) including a display unit (9), the storage unit (7) includes guide information including position information input from the first communication unit (4), and the second information. The map information input from the communication unit (5) is stored, and the control unit (8) adds the first map to the map information input from the second communication unit (5) or the storage unit (7). An information terminal characterized in that guide information input from a communication means (4) or a storage unit (7) is displayed on a display unit (9) in an overlapping manner according to position information. 2. The information terminal according to claim 1, further comprising a position detection means (6), and the map information and the guidance information according to the detected position detection information are input to the control unit (8). An information terminal characterized by: 3. A guide information storage unit (19) for storing guide information including at least position information for specifying a position on a map.
And a map information storage unit (18) and a search unit (17) for designating and searching for information, and the search unit (17) outputs the searched map information or guidance information including position information. A guide system featuring. 4. The guide system according to claim 3, wherein the guide information including the map information or the position information output from the search unit is input to the information terminal according to claim 1 or 2 through a communication line to display the information. A navigation system characterized by being displayed by a section (9). 5. The navigation system according to claim 3, wherein the map information is communicated through TV broadcasting, and the guidance information including the position information is communicated through a mobile phone line. 6. The navigation system according to claim 3, wherein the map information is communicated through FM multiplex broadcasting, and the guidance information including the position information is communicated through a mobile phone line. 7. A position detecting means (6) for measuring the current position of the information terminal (1) is provided, and the map information input from the second communication means (5) or the storage section (7) is added to the first information. In the information terminal (1) for displaying the guide information input from the communication unit (4) or the storage unit (7) on the display unit (9) in accordance with the position information included therein, the position detecting unit (6) An information terminal, which outputs inquiry information including the measured current position, and displays guide information according to the inquiry information on the display unit (9) so as to be superimposed on the map information. 8. An information terminal according to claim 1, 2 or 7, characterized in that the storage unit (7) for the map and guide information is removable and replaceable. 9. The navigation system according to claim 5, wherein the guide information including the position information is communicated through a digital cordless telephone line.