JPH1194923A - Mobile terminal and its positioning method - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a mobile terminal and a positioning method thereof, which improve the convenience of the mobile terminal and the user by measuring the position by a different positioning method. SOLUTION: A global positioning system (G)
PS) or a personal handy phone system (PH)
PHS radio section 1 for calculating position information data using S)
09 and the PHS wireless control unit 108, the position of the mobile terminal is measured, and the latitude and longitude are displayed on the display unit 106.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal capable of measuring its own position and a positioning method thereof.

[0002]

2. Description of the Related Art Conventionally, in a car navigation system, map data read from a storage medium is displayed, a current position is displayed on the map data by positioning of a global positioning system (GPS), and obtained by a storage medium or wireless communication. In addition, accompanying traffic regulation information, traffic congestion information, route information, parking lot information, sightseeing information, and other various information were displayed. In addition, portable types of such car navigation systems have been commercialized.

[0003]

SUMMARY OF THE INVENTION However, a portable GPS terminal has a built-in PHS radio unit for communicating by a radio communication system of a personal handy phone system (PHS) and a PHS radio control unit for controlling the PHS radio unit. An integrated mobile terminal has not been put to practical use. Therefore, in an integrated mobile terminal having a PHS wireless unit and a PHS wireless control unit incorporated in the GPS positioning function, the PHS
Positioning could not be performed by receiving the address of the base station.

In a portable terminal capable of positioning by GPS, a radio wave transmitted from a GPS satellite cannot be received in a basement, a tunnel, a building, a place surrounded by high-rise buildings, or a place surrounded by tall trees. In such a case, GPS positioning cannot be performed.

On the other hand, if a PHS base station does not exist in a portable terminal capable of positioning by PHS,
The address of the PHS base station cannot be received by the HS wireless communication system, and positioning cannot be performed.

[0006] Further, a GPS positioning function and a PHS
In a portable terminal having the function of positioning by
It was not possible to select whether to perform positioning using S or PHS.

Further, when performing positioning by PHS,
If a PHS base station address transmission request and a PHS base station address communication are performed by a communication method other than the S wireless communication,
Since the number of components of the mobile terminal increases, there is a problem in power consumption, size, and cost of the mobile terminal.

[0008] The present invention has been made to solve the above-mentioned problems, and provides a mobile terminal and a positioning method thereof, which improve the convenience of the mobile terminal and the user by measuring the position by a different positioning method. The purpose is to do.

[0009]

In order to achieve the above object, a mobile terminal according to the present invention comprises a first position calculating means for calculating position information data using a global positioning system (GPS), and a personal handy phone. Second position calculating means for calculating position information data using a system (PHS), and positioning means for positioning the position of the terminal based on the position information data calculated by the first or second position calculating means. And characterized in that:

In order to achieve the above object, a positioning method for a mobile terminal according to the present invention includes a first position calculating step of calculating position information data using a global positioning system (GPS), and a personal handy phone system. A second position calculation step of calculating position information data using (PHS); and a positioning step of positioning the position of the terminal based on the position information data calculated in the first or second position calculation step. It is characterized by having.

[0011]

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

In this embodiment, the position of a mobile terminal can be more reliably measured using a global positioning system (GPS) and a personal handy phone system (PHS).

First, the configuration of the mobile terminal (wireless mobile terminal) used in the present embodiment will be described.

[Configuration of Wireless Portable Terminal] FIG. 1 is a block diagram showing the internal configuration of the wireless portable terminal in the present embodiment. In the figure, reference numeral 101 denotes a wireless portable terminal, which will be described in detail later.
It has a wireless control unit. Reference numeral 102 denotes a CPU, which calculates the current time and the current location based on satellite time and orbit data input from a GPS receiving unit, which will be described later, and a display unit, a PHS wireless control unit, an input / operation unit, and an external interface, which will be described later. It controls the whole wireless portable terminal 101 including the unit. A GPS receiving unit 103 receives a GPS satellite wave. A ROM 104 stores a control program of the CPU 102, and stores an address of a PHS base station, which will be described in detail later, and position information data corresponding to the address.

Reference numeral 105 denotes a RAM, which is a time received from a satellite, position data, a positioning result, a time and position data of a captured image and an imaging point, and connection information between the two, and obtained by an external interface unit or wireless communication described later. The stored map data is stored. A display unit 106 displays positioning information data, map data, and the like. An input / operation unit 107 turns on the power of the mobile terminal. 108
Denotes a PHS radio control unit, which controls a PHS radio unit described later. Reference numeral 109 denotes a PHS radio unit, which transmits a request for transmitting position information data to the PHS base station, receives position information data from the PHS base station, and receives map data by PHS wireless communication. Reference numeral 110 denotes an external interface unit such as a PCMCIA interface.

As described above, as the wireless portable terminal 101,
It is possible to provide an integrated mobile terminal incorporating the GPS receiving unit 103, the PHS wireless unit 109, and the PHS wireless control unit 108.

[Configuration of GPS Receiving Unit] Next, the GPS for detecting the position of the terminal will be described. FIG. 2 is a block diagram showing an internal configuration of the GPS receiving unit 103 shown in FIG. In the figure, reference numeral 201 denotes an antenna,
Satellite wave transmitted from satellite (frequency: 1.57542G
Hz, frequency bandwidth: 2.046 MHz).
Reference numeral 202 denotes a down converter, which converts a satellite wave received from the antenna 201 into an IF (intermediate frequency) signal. 2
A voltage comparator 03 converts a signal output from the down converter 202 into digital data subjected to spectrum spreading. Reference numeral 204 denotes a C / A code generation circuit, which demodulates the spread spectrum signal output from the voltage comparator 203. An interface circuit 205 communicates the time obtained by demodulating the spread spectrum signal and the orbit data of the satellite with the CPU 102.

[Configuration of PSH Base Station] Next, a PHS base station that performs wireless communication with the wireless portable terminal 101 in the present embodiment will be described. FIG. 3 is a block diagram showing an internal configuration of the PHS base station. In the figure, 301 is P
It is an HS base station and has a PHS radio unit, a PHS radio control unit, and the like. Reference numeral 302 denotes a CPU that controls the entire PHS base station 301 including a PHS wireless control unit, a PHS wireless unit, an input / operation unit, and an external interface unit. 3
03 is a ROM, a control program of the CPU 302,
The address of the own PHS base station is stored. 304 is RAM
And stores the terminal address and the like of the mobile terminal. 30
Reference numeral 5 denotes a display unit for displaying the status of the operation and the like. An input / operation unit 306 turns on the power of the PHS base station.
A PHS radio control unit 307 controls the PHS radio unit. Reference numeral 308 denotes a PHS wireless unit, and the wireless portable terminal 10
1 receives a base station address transmission request, transmits the terminal address of the base station to the wireless portable terminal 101, and performs various data communications.

[Description of Detailed Operation] In the above configuration,
A method of positioning the mobile terminal (wireless mobile terminal 101) by GPS or PHS, and a method of positioning by PHS when positioning is not possible by GPS will be described.

First, a method in which the mobile terminal performs positioning by GPS will be described. FIG. 4 is a flowchart showing the positioning operation of the wireless portable terminal 101.

In step S401, when the power switch of the input / operation unit 107 of the wireless portable terminal 101 is turned on, the CPU 102 proceeds to step S402, and selects whether to perform positioning by GPS or PHS. As a result, it is possible to select whether to perform positioning by GPS or PHS.

If the GPS positioning is selected, the process proceeds to step S403, where the power of the GPS receiving unit 103 is turned on.
I do. As a result, positioning is started by the GPS receiving unit 103, and reception of a GPS satellite transmission wave is started. Next, in step S404, three satellite waves are transmitted from a plurality of GPS satellites.
It is determined whether or not three or more waves have been received. If three or more waves have not been received, the process proceeds to step S405, and it is determined whether or not the designated time has elapsed. If it has not elapsed, the process returns to step S404, and it is determined whether three or more waves have been received again.

In step S404 described above,
If three or more waves have been received, the process proceeds to step S406, where position positioning is enabled, and the position (latitude, longitude) of the own wireless portable terminal 101 is calculated. Then, in step S407, the result is stored in the location information data storage location of the RAM 105, and in step S408, the latitude and longitude are displayed on the display unit 106.

Next, a method of positioning by PHS will be described. First, the operation of the wireless portable terminal 101 will be described.

In the above step S402, the PHS
If positioning by GPS is selected, or if three or more GPS satellite waves cannot be received even after the designated time has elapsed in step S405, the process proceeds to step S409, and the method of positioning by PHS is started. .

When positioning is started by the PHS, first, in step S410, the P near the wireless portable terminal 101 is set.
It requests the HS base station to notify the address of its own PHS base station by the PHS wireless communication system. next,
In step S411, it is determined whether the address of the base station has been received by the PHS wireless communication method. Here, if the address of the base station has not been received, the process proceeds to step S412, and it is determined whether or not the designated time has elapsed. Here, if the time has not elapsed, the process returns to step S411, and it is determined whether the address of the base station has been received again.

Further, in the above-mentioned step S411,
If the address of the base station has been received, step S413
Then, the data in the ROM 104 in which the position information data of the base station is stored is searched from the address, and the position of the base station is measured in step S414. If the address of the base station is 0000000000000000, From the location information data shown in FIG.
It is 9 degrees 42 minutes 13.3 seconds and north latitude 35 degrees 39 minutes 23.6 seconds. In step S408, the latitude and longitude are displayed on the display unit 106. In this way, by the PHS wireless communication method, positioning can be performed by receiving the address of the PHS base station, and positioning can be performed by receiving the address of the PHS base station even when measurement cannot be performed by GPS. become.

Also, in step S412 described above,
If the address of the base station has not been received even after the specified time has elapsed, the process proceeds to step S415, and the fact that positioning is impossible is displayed on the display unit 106.

Next, the operation of the PHS base station will be described. FIG. 6 is a flowchart showing the operation of the PHS base station 301.

First, in step S601, the PHS
When the power switch is turned on by the input / operation unit 306 of the base station 301, the CPU 302 advances the processing to step S602, and the wireless portable terminal 10 uses the PHS wireless communication method.
1 to judge whether a terminal address notification request of the own PHS base station has been received. Here, if received, the process proceeds to step S603, where address data is read from the ROM 303 storing the address of the own PHS base station,
The PHS wireless control unit 307 and the PHS wireless unit 308 notify the wireless portable terminal 101 of the PHS wireless communication method.

As described above, according to the present embodiment, the GPS
In a mobile terminal that can perform positioning by using the PHS radio communication method, positioning can be performed by receiving the address of the PHS base station, and the GPS receiving unit receives and calculates three or more GPS satellite waves. Even when positioning cannot be performed, the position can be measured by receiving the address of the PHS base station near the own wireless portable terminal and recognizing the position of the base station from the address.

[Other Embodiments] Next, as another embodiment, a description will be given of a method of performing positioning by GPS when the mobile terminal (wireless mobile terminal 101) cannot perform positioning by PHS. FIG. 7 is a flowchart showing the positioning operation of the wireless portable terminal 101.

First, an operation of the wireless portable terminal 101 will be described with respect to a method of performing positioning by PHS. Step S
In 701, the input / production unit 1 of the wireless portable terminal 101
When the power switch 07 is turned on, step S702 is performed.
The process proceeds to and the user selects whether to perform positioning by GPS or PHS. Thus, it is possible to select whether to perform positioning by GPS or PHS. Here, if the positioning by PHS is selected, the process proceeds to step S703, and the method of positioning by PHS is started.

When positioning is started by the PHS, first, in step S704, the P near the wireless portable terminal 101 is determined.
It requests the HS base station to notify the address of its own PHS base station by the PHS wireless communication system. next,
In step S705, it is determined whether the address of the base station has been received by the PHS wireless communication method. If the address of the base station has not been received, the process proceeds to step S706, and it is determined whether or not the designated time has elapsed. Here, if the time has not elapsed, the process returns to step S705, and it is determined whether the address of the base station has been received again.

In the above step S705,
If the address of the base station has been received, step S707
To search the data in the ROM 104 in which the position information data of the base station is stored from the address. In step S708, the position of the base station is measured. If the address of the base station is 0000000000000000, From the location information data shown in FIG.
At 9 degrees 42 minutes 13.3 seconds and latitude 35 degrees 39 minutes 23.6 seconds north, the latitude and longitude are displayed on the display unit 106 in step S709. In this way, the PHS base station receives the address of the PHS base station in the vicinity of the mobile terminal 101 by the PHS wireless communication system, and recognizes the position of the base station from the address to determine the approximate location of the mobile terminal 101. Becomes possible.

The operation of the PHS base station is the same as in the above-described embodiment, and will not be described.

Next, a method in which the mobile terminal (wireless mobile terminal 101) performs positioning by GPS will be described.

First, in step S702, the GPS
If the positioning according to is selected, or if the address of the base station has not been received even after the designated time has elapsed in step S705, the process proceeds to step S710 and the GP
The method of positioning by S is started.

When positioning is started by the GPS, the GPS
The power of the receiving unit 103 is turned on, whereby positioning is started in the GPS receiving unit 103, and reception of the GPS satellite transmission wave is started. Next, in step S711, a plurality of G
It is determined whether three or more satellite waves have been received from the PS satellite.
If no wave or more has been received, the flow advances to step S712 to determine whether the designated time has elapsed. Here, if the time has not elapsed, the process returns to step S711,
It is determined again whether three or more waves have been received. Also,
In step S711, if three or more waves are received, the process proceeds to step S713, where position positioning is enabled, and the position (latitude, longitude) of the own wireless portable terminal 101 is calculated. In step S714, the result is stored in RA
It is stored in the location information data storage location of M105, and the latitude and longitude are displayed on the display unit 106 in step S709.

If it is determined in step S712 that three or more GPS satellite waves have not been received even after the designated time has elapsed, the flow advances to step S715 to display on the display unit 106 that positioning is impossible.

Thus, according to another embodiment, GP
Even when a mobile terminal capable of performing positioning by S and PHS receives a PHS base station address near its own wireless mobile terminal and cannot perform positioning by recognizing the position of the base station from the address, the GPS receiving unit can control the GPS. 3 satellite waves
Positioning becomes possible by receiving waves or more.

As described above, by performing positioning by GPS and PHS, it is possible to provide a mobile terminal with improved convenience. Further, the power consumption of the mobile terminal can be reduced, the size can be reduced, and the price can be reduced.

Even if the present invention is applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, a printer, etc.), an apparatus (for example, a copier, a facsimile, etc.) comprising one device Device).

Further, an object of the present invention is to supply a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or an apparatus, and to provide a computer (CPU or MP)
It goes without saying that U) can also be achieved by reading and executing the program code stored in the storage medium.

In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the readout program code, not only the functions of the above-described embodiment are realized, but also the OS (Operating System) running on the computer based on the instruction of the program code. ) May perform some or all of the actual processing, and the processing may realize the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instruction of the program code, It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

[0049]

As described above, according to the present invention,
By measuring the position using different positioning methods, it is possible to improve the convenience of the mobile terminal and the user.

[0050]

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an internal configuration of a wireless portable terminal according to an embodiment.

FIG. 2 is a block diagram showing an internal configuration of a GPS receiving unit 103 shown in FIG.

FIG. 3 is a block diagram illustrating an internal configuration of a PHS base station according to the present embodiment.

FIG. 4 is a flowchart showing a positioning operation of the wireless portable terminal 101.

FIG. 5 is a diagram showing a correspondence between an address of a base station and position information data.

FIG. 6 is a flowchart showing an operation of the PHS base station 301.

FIG. 7 is a flowchart illustrating a positioning operation of the wireless portable terminal 101 according to another embodiment.

[Explanation of symbols]

 101 wireless portable terminal 102 CPU 103 GPS receiving unit 104 ROM 105 RAM 106 display unit 108 PHS wireless control unit 109 PHS wireless unit

Claims (8)

[Claims] 1. A global positioning system (G)
A first position calculating means for calculating position information data using a personal handy phone system (PHS); a second position calculating means for calculating position information data using a personal handy phone system (PHS); A mobile terminal comprising: positioning means for positioning the position of the terminal based on the position information data calculated by the position calculation means. 2. The positioning means, when it is impossible to calculate position information data by the first position calculation means, measures the position of the terminal by the second position calculation means, and further comprises the second position calculation means. The mobile terminal according to claim 1, wherein when the position information data cannot be calculated by the calculation unit, the position of the terminal is measured by the first position calculation unit. 3. The apparatus according to claim 2, wherein said second position calculating means requests an address of said base station from a base station near said terminal, and calculates position information data based on said address. 1. The mobile terminal according to 1. 4. The mobile terminal according to claim 1, further comprising a selection unit that selects one of the first position calculation unit and the second position calculation unit. 5. A global positioning system (G
A first position calculating step of calculating position information data by using a personal handy phone system (PHS); a second position calculating step of calculating position information data by using a personal handy phone system (PHS); A positioning step of positioning the position of the terminal based on the position information data calculated in the position calculation step. 6. In the positioning step, when the position information data cannot be calculated in the first position calculating step, the position of the terminal is measured by the second position calculating step, and the second position is calculated. 6. The positioning method for a mobile terminal according to claim 5, wherein when the position information data cannot be calculated in the calculation step, the position of the terminal is measured in the first position calculation step. 7. The method according to claim 1, wherein the second position calculating step requests an address of the base station from a base station near the terminal, and calculates position information data based on the address. 6. The positioning method for a mobile terminal according to 5. 8. The mobile terminal positioning method according to claim 5, further comprising a selection step of selecting one of the first position calculation step and the second position calculation step.