JPH06350733A - Portable telephone navigation system - Google Patents

Abstract

PURPOSE:To display a map near a locating position with a required operation by providing a display part at a portable telephone. CONSTITUTION:Map information is requested by operating a 'map' button or the like at a portable telephone equipment. This signal is inputted from an input part 15 to generate a required map request signal by a control part 18, inputted through a telephone set part 11 to a modulation/transmission part 12, modulated into a required high-frequency signal and transmitted from an antenna 13. This signal is received by an antenna 19 of a base station equipment and demodulated by a reception/demodulation part 20, and the map request signal is discriminated by a discrimination part 23. Based on this discrimination, the map information is read from a map information storage part 24 to generate a required image signal by an image data generation part 25 and transmitted from the antenna 19 to the portable telephone after required signal processing is performed at a modulation/transmission part 21. This signal is inputted through the antenna 13 to a reception/demodulation part 14, demodulated, recorded in a memory part 16, read out, inputted to a display part 17 to generate a required display signal and displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system, and more particularly to a navigation system for transmitting and displaying map information from a transmitting / receiving base station of a portable radio telephone to the portable radio telephone.

[0002]

2. Description of the Related Art A navigation system for knowing the position where one is, for example, receives radio waves sent from a plurality of artificial satellites launched for navigation and measures the time difference between the radio waves of the plurality of satellites. There is "GPS" (Global Positioning System), etc., which is designed to find out where you are. Then, the determined position, for example, east longitude XX degree △△ hour XX minute □□ second, north latitude XX
It is designed to display a map centered around degrees △△ hours XX minutes □□ seconds. Since this artificial satellite emits radio waves based on an extremely precise atomic clock, position error is a few It is accurate within 10 meters. However, since this system receives satellite radio waves, it is necessary to carry a parabolic antenna for receiving satellite radio waves, which cannot be used in a town with many tall buildings or in an underground mall, and to determine the position. Since it is necessary to store the arithmetic unit of (1) or a map of a wide range, there is a problem that the receiving device becomes expensive.

[0003]

Since the map displayed on the mobile phone is used as a navigator, it is sufficient for the mobile phone to display a map of the area where the owner is currently located. Since it communicates with the radio base station by a weak radio wave, this object can be achieved by transmitting the map information in the vicinity of the base station with which the mobile phone communicates to the mobile phone. In view of such a point, the present invention registers map information of the communication range of its own base station in each wireless base station, sends this map information to a mobile phone in response to a map request, and displays the mobile phone display. It is to provide what is displayed in the department.

[0004]

In order to solve the above problems, the present invention transmits / receives a call signal or the like between a mobile telephone device and a base station device via a wireless line, and a public telephone line is sent from a base station to a general station. An input unit for inputting a map information request, and a first modulation / transmission unit for modulating a map request signal or the like from the input unit into a high-frequency signal and transmitting the high-frequency signal through a required wireless line in a device connected to a network or the like. A mobile phone device including a first reception / demodulation unit that receives and demodulates high-frequency signals such as map information from the base station device, and a display unit that displays based on the map information from the first reception / demodulation unit; Secondly, a high frequency signal from the mobile phone device is received through a wireless line and demodulated.
A receiving / demodulating section, a discriminating section for discriminating a map request signal from signals from the second receiving / demodulating section, a map information storing section for storing map information, and a map information storing section based on the signal from the discriminating section. An image data generation unit that generates the required image data based on the read data, and a second modulation / transmission unit that modulates a signal or the like from the image data generation unit into a required high frequency signal and sends it out via a required wireless line. The present invention provides a mobile phone navigation system including the base station device.

[0005]

With the above configuration, in the portable telephone navigation system according to the present invention, when the map information is obtained, the request for the map information is input by the portable telephone device. This map information request signal is modulated into a required high frequency signal and sent out via a wireless line. This high frequency signal
It is received and demodulated by a base station device whose communication area is the location of the mobile phone device. Then, the map request signal is determined from the demodulated signal, the map information stored in advance is read out based on this determination, the required image data is generated, the high frequency signal is modulated, and the signal is transmitted via the wireless line. To do. The mobile phone device receives and demodulates this high-frequency signal and displays a map on the display unit based on the demodulated map information.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a mobile phone navigation system according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a conceptual diagram of a mobile phone navigation system according to the present invention, and FIG. 2 is a block diagram of essential parts of an embodiment of a mobile phone navigation system according to the present invention.

In FIG. 1, reference numeral 1 is a mobile telephone device (one or more), 2 is a base station device (plural), and a required radio line is connected between the mobile telephone device 1 and the base station device 2 by a required high frequency signal. Send and receive call signals and so on. The base station devices 2 are arranged at intervals of about 100 m (meter) in a town, for example. Reference numeral 3 is a control station, and a plurality of base station devices 2
Are connected to each other via a public telephone line network 4 or the like, and are connected to other central offices or ordinary telephones, and call signals with the mobile telephone device 1 input / output via each base station device 2 are transmitted through the public telephone network. I / O to 4 etc.

In FIG. 2, (a) is a portable telephone device,
Corresponding to the mobile phone device 1, (b) is a base station device,
It corresponds to the base station 2. In the mobile phone device a, 11 is a telephone section, 12 is a modulation / transmission section, and the transmission / sending signal from the telephone section 11 is modulated into a required high-frequency signal by the modulation / transmission section 12, and a weak radio wave is transmitted through the antenna 13. Send out. A reception / demodulation unit 14 demodulates the high frequency signal received from the base station device B via the antenna 13, and the demodulated call signal is the telephone unit 11
To enter. Reference numeral 15 is an input unit for inputting a map information request or the like. A memory unit 16 records the map information from the receiving / demodulating unit 14. A display unit 17 generates the map information read from the memory unit 16 into a required display signal and displays it on the screen.
A control unit 18 controls each unit of the mobile phone unit a.

Reference numeral 20 of the base station apparatus (b) is a receiving / demodulating section which receives a high frequency signal from the portable telephone apparatus (b) through the antenna 19 and demodulates it. Reference numeral 21 is a modulation / transmission unit, which modulates a voice signal or map information, which will be described later, into a required high-frequency signal, and sends it out to the mobile phone unit B through the antenna 19. An input / output unit 22 inputs / outputs a signal from the receiving / demodulating unit 21 or a signal to the modulating / transmitting unit 22 to / from the central station 3. A discriminating unit 23 discriminates the map information request signal from the signal from the receiving / demodulating unit 20. A map information storage unit 24 stores map data of the area where the base station device B is installed.
An image data generation unit 25 generates the map information read from the map information storage unit 24 into required image data based on the signal from the discrimination unit 23. A control unit 16 controls each unit of the base station device B.

Next, the operation of the mobile phone navigation system according to the present invention will be described. A call using the mobile phone device (i) is performed by inputting and outputting a voice with a transmitter and a receiver by a required operation of the telephone unit 11. The transmitted voice is, for example, 32 Kbps (kilobits / second) by an A / D converter (not shown).
Alternatively, it is converted into a digital signal of 16 Kbps or the like, and the modulation / transmission unit 12 performs phase modulation by the GMSK system or the QPSK system, and generates a time division multiple access signal by the TDMA system or TDMA / TDD system, for example, 2.6. A high-frequency signal in the GHz (Gigahertz) band or the like is transmitted via the antenna 13.

The high frequency signal transmitted from the mobile phone unit a is caught by the antenna 19 of the base station unit (b) whose communication area is the zone where the mobile phone unit (a) is located. The high-frequency signal from the antenna 19 is input to the reception / demodulation unit 20, and is subjected to reception processing by, for example, the TDMA system or TDMA / TDD system, and phase demodulation by the GMSK system or QPSK system. If the demodulated signal is voice, this voice
22 is transmitted to the central station 3 through a required line, and is sent to a telephone exchange station or the like via a public telephone line network 4 or the like,
The data is input to another mobile telephone device, a general telephone or the like through another control station connected by exchange. Then, the voice of the telephone input through the input / output unit 22 is converted into a digital signal of 32 Kbps or 16 Kbps by an A / D converter (not shown), and the GMSK system or QPSK system by the modulator / transmitter 21. Phase modulation by TDMA method or TDMA / TDD
Generated in time-division multiple access signal such as system, for example, 2.
A high-frequency signal of 6 GHz band or the like is transmitted through the antenna 19.

The radio wave transmitted from the base station device (b) is caught by the antenna 13 of the mobile phone device (a), and the reception / demodulation unit 14
Then, reception processing is performed by the TDMA system or the TDMA / TDD system, and phase demodulation is performed by the GMSK system or the QPSK system to obtain a low-frequency audio signal, which is input to the telephone unit 11 and output as a sound from a receiver or the like.

When the carrier of the mobile phone unit a requests map information for navigation or the like, he pushes a "map" button or the like (not shown) of the mobile phone unit a. Based on this operation, a required map request signal is generated via the control unit 18 in response to a signal from the input unit 15, and is input to the modulation / transmission unit 12 via the telephone unit 11 and is similar to the call voice. Signal processing is performed and the signal is transmitted from the antenna 13.

The radio wave from the mobile phone unit (i) is caught by the antenna 19 of the base station unit (b) and the receiving / demodulating unit 20 performs the same signal processing as in the case of the call signal. The signal from the reception / demodulation unit 22 is also input to the determination unit 23 via the control unit 26, and the determination unit 23 outputs a signal when the input signal is the required map request signal. On the other hand, map information of the communication area of the base station device B is registered in the map information storage unit 24. For example, the communication area of the base special device B is the radius
In the case of about 100m, the radius is 100m + in the map information storage unit 24
The map in the range of α is registered in advance. Then, based on the signal from the discrimination unit 23, the map information data is read from the map information storage unit 24 via the control unit 26 and input to the image data generation unit 25 to generate a required image signal. Then, this signal is input to the modulation / transmission unit 21 via the control unit 26, the same signal processing as in the case of call voice is performed, and the antenna is processed.
Call from 19

The high-frequency signal of the map information is input to the receiving / demodulating section 14 via the antenna 13 of the mobile phone unit a, and after required signal processing, is input to the memory section 16 and recorded. The writing of data to the memory unit 16 is completed, or simultaneously with writing, the data is input to the display unit 17 to perform required signal processing for display, and display is performed by, for example, a liquid crystal display panel.
In addition, if the user wants to display again after turning off the display on the display unit 17, he / she can operate the required “display” button or the like, and the memory unit 16
It is also possible to read out the data recorded in and display it on the display unit 17. The record of the memory unit 16 may be automatically rewritten when new data of map information is input.

[0016]

As described above, according to the portable telephone navigation system of the present invention, when the "map" button or the like of the portable telephone device is pressed, the map transmitted from the base station device closest to the liquid crystal screen or the like is displayed. Is displayed. The mobile phone base stations are, for example, arranged at intervals of about 100 m, and a map of the communication area + α is registered in each base station, which is a relatively small device called a mobile phone device. Therefore, even a screen with a small display area can be sufficiently useful for route guidance, and it is necessary to incorporate a calculation circuit for position determination, a map data storage circuit, etc. like a system that uses radio waves of artificial satellites. Therefore, the mobile phone device can be manufactured relatively inexpensively.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a mobile phone navigation system according to the present invention.

FIG. 2 is a block diagram of a main part of an embodiment of a mobile phone navigation system according to the present invention.

[Explanation of symbols]

 1 Mobile phone device 2 Base station device 3 General office 11 Telephone unit 12 Modulation / transmission unit 14 Reception / demodulation unit 15 Input unit 16 Memory unit 17 Display unit 18 Control unit 20 Reception / demodulation unit 21 Modulation / transmission unit 22 Input / output unit 23 Discrimination unit 24 Map information storage unit 25 Image data generation unit 26 Control unit

Claims (3)

[Claims] 1. A mobile telephone device comprising map requesting means for requesting map information from a base station via a wireless line, map display means for displaying map information from the base station, and a map recording necessary map information. A base station device comprising information recording means and map information transmitting means for reading out map information from the map information recording means based on a map information request from the mobile phone device and transmitting the map information to the mobile phone device via a wireless line. Mobile phone navigation system. 2. A map information request is made when a call signal or the like is transmitted / received between a mobile phone device and a base station device via a wireless line, and the base station is connected to a public telephone line network or the like via a control station. An input unit for inputting, a first modulation / transmission unit for modulating a map request signal or the like from the input unit into a high frequency signal and transmitting the high frequency signal through a required wireless line, and receiving a high frequency signal such as map information from the base station device. A mobile phone device including a first reception / demodulation unit for demodulation and a display unit for displaying based on map information from the first reception / demodulation unit, and receives a high-frequency signal from the mobile phone device via a wireless line. Second to demodulate
A receiving / demodulating section, a discriminating section for discriminating a map request signal from signals from the second receiving / demodulating section, a map information storing section for storing map information, and a map information storing section based on the signal from the discriminating section. An image data generation unit that generates the required image data based on the read data, and a second modulation / transmission unit that modulates a signal or the like from the image data generation unit into a required high frequency signal and sends it out via a required wireless line. Mobile phone navigation system consisting of the following base station devices. 3. A map information request is made when a call signal or the like is transmitted and received between a mobile phone device and a base station device via a wireless line, and the base station is connected to a public telephone line network or the like via a control station. An input section for inputting, a first A / D conversion section for converting a map request signal or a call voice from the input section into a digital signal, and a required radio signal for modulating the digital signal from the first A / D conversion section into a high frequency signal. A first modulation / transmission unit for sending out via a line, a first reception / demodulation unit for receiving and demodulating a high frequency signal such as a call voice or map information from a base station device, and a digital signal from the first reception / demodulation unit Mobile phone device including a first D / A conversion unit for converting the data into an analog signal and a display unit for displaying the map information based on the map information from the first D / A conversion unit, and a high-frequency signal from the mobile phone device for wireless communication. Second reception for receiving and demodulating via
A demodulation section, a second D / A conversion section for converting a digital signal from the second reception / demodulation section into an analog signal, and a second D / A
A discriminating unit that discriminates a map request signal by a signal from the converting unit, a map information storage unit that stores map information, and data that is read from the map information storage unit based on the signal from the discriminating unit to obtain required image data. An image data generation unit for generating, a second A / D conversion unit for converting a signal from the image data generation unit, a call signal, or the like into a digital signal;
A mobile phone navigation system comprising a base station device comprising a second modulation / transmission unit that modulates a signal from a D / D conversion unit into a high frequency signal and sends the high frequency signal through a required wireless line.