JP2003014487A - Portable navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable navigation device capable of loading sufficient information and display capacity for performing navigation, and performing navigation during a walking time, concerning a portable information terminal. SOLUTION: This device is equipped with a body 2 and an extension 3. The extension 3 detects the present position on a map and transmits the position detection data to the body 2. The body 2 reads out map image data from a DVD recording medium mounted on a DVD drive 2E, and displays a map image on a display 2A, and displays the present position on the map image based on the position detection data transmitted from the extension 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for navigation by a portable information terminal.

[0002]

In recent years, various types of portable information terminals such as notebook personal computers, PDAs, and mobile phones have rapidly become widespread.
Various functions for information processing mounted on these portable information terminals have been rapidly expanded.

Under such circumstances, a laptop personal computer, a PDA, a mobile phone or the like is equipped with GPS so that the user can carry the vehicle not only while driving but also when walking while carrying a destination. It is becoming possible to navigate up to.

However, the notebook personal computer is unsuitable for navigation while walking, and when using a PDA, a mobile phone, or the like as a navigation device, the display equipped therein is small, and Since there is a limit to the amount of various data required for navigation such as map image data to be installed, there is a problem that a sufficient navigation function cannot be exhibited.

The present invention has been made in order to solve the conventional problems when the portable information terminal as described above is used as a navigation device.

[0006] That is, an object of the present invention is to provide a portable navigation device which can carry sufficient information and display capability for navigation and can be navigated while walking.

[0007]

In order to achieve the above object, a portable navigation device according to a first aspect of the present invention comprises a main body unit and a slave unit, and the slave unit detects the current position on a map. It has a current position detection member and a first communication member for transmitting the position detection data detected by this current position detection member to the main body unit, and the main body unit is displayed on the image display member and this image display unit. A map image data providing member that provides map image data, a map image display member that reads out map image data in a required range from the map image data providing member and displays a map image on the image display member, and the slave unit section. A second communication member that communicates with the first communication member, and a second communication member from the first communication member of the slave unit on the map image displayed on the image display member by the map image display member.
It is characterized by having a current position display member for displaying the current position based on the position detection data transmitted to the communication member.

In the portable navigation device according to the first aspect of the present invention, the main body portion and the slave portion which are paired with each other
Performs so-called handy navigation that can be used even while walking.

That is, in the slave unit that is operated separately from the main unit, the current position detecting member is a global positioning system (GPS) or a communication device such as a vending machine provided with position information located in a city area. The current position on the map, that is, the current position of the walking user is detected by communicating with the facility, and the detected position detection data is transmitted, for example, to the Bluetooth communication between the first communication member and the second communication member of the main body. It is transmitted to the main body by communication via.

The main body section has an image display member and a map image data providing member for providing map image data for displaying a map image on the image display section. Based on the position detection data transmitted to the second communication member, the map image data of the region of the required range including the position indicated by the position detection data is read from the map image data providing member, and based on this map image data A map image is displayed on the image display member.

Then, the main body has a current position display member,
Based on the position detection data transmitted from the slave unit,
The current position is displayed to the user by, for example, displaying a doll mark at a position corresponding to the map coordinates indicated by the position detection data in the map image displayed on the image display member.

As described above, according to the first invention,
For example, when a so-called handy navigation is performed using a multifunctional portable information terminal device such as a mobile phone, display of a map image for navigation and provision of data for displaying this navigation map image are provided by a child device. Since it is carried out in the main body unit which is separate from the portable information terminal device, which is a part of the portable information terminal device, it is possible to perform navigation at the time of walking based on a large screen and a sufficient amount of information, which is difficult for portable information terminal devices such as mobile phones.

In order to achieve the above-mentioned object, a portable navigation device according to a second aspect of the present invention is, in addition to the configuration of the first aspect, address data in which the main body section provides address data indicating an address on a map image. The providing member and the first of the slave unit
Based on the position detection data transmitted from the communication member to the second communication member, the address data corresponding to the position detection data is searched from the address data providing member, and the searched address data is transmitted to the child via the second communication member. The slave unit further includes an address data search member for transmitting to the first communication member of the machine unit, and the slave unit transmits the image display member and the second communication member of the main unit to the first communication member for the image display member. It is characterized by further comprising an address display member for displaying an address based on the received address data.

According to the portable navigation device in accordance with the second aspect of the present invention, the main body displays the map image based on the position detection data transmitted from the slave unit and the current position on the map image. At the same time, the address data search member searches the address data providing member for the address data indicating the address on the map image corresponding to the position detection data, and reads the read address data from the second communication member to the first communication member of the slave unit. Send to.

Then, in the slave unit, based on the address data transmitted from the main body unit, the address display member displays the position detection data detected by the current position detection member in the image display member of the slave unit unit. The address of the corresponding current position is displayed.

Thus, the user refers to the display showing the current position on the map displayed on the image display unit of the main body unit and the address display of the current position displayed on the image display unit of the child device unit, The current position can be grasped more reliably, and the destination can be easily reached.

In order to achieve the above-mentioned object, a portable navigation device according to a third aspect of the present invention has, in addition to the structure of the first aspect, between the first communication member of the slave unit and the second communication member of the main body. The communication is carried out by Bluetooth.

According to the portable navigation device in accordance with the third aspect of the present invention, since the data transmission / reception between the slave unit and the main body is performed by Bluetooth communication, the data transmission / reception is performed via the telephone line. It is possible to exchange accurate and economical information that is quick and responsive.

In order to achieve the above-mentioned object, a portable navigation device according to a fourth aspect of the present invention is, in addition to the configuration of the first aspect of the invention, communication in which the current position detecting member is provided with positional information about the location of the current location. It is characterized by detecting the current position on the map by communicating with facilities.

According to the portable navigation device in accordance with the fourth aspect of the present invention, the position detection by the current position detection member of the slave unit is carried out by the mobile communication function or the Bluetooth communication function of the slave unit. This is done by communicating with network relay stations and communication facilities equipped with location information such as sales management communication antennas attached to vending machines, which are located in various parts of the city, and respond to this. The position can be detected quickly and at a cost advantage.

In order to achieve the above object, the portable navigation device according to the fifth invention is characterized in that, in addition to the structure of the fourth invention, the communication between the current position detecting member and the communication facility is performed by Bluetooth. I am trying.

According to the portable navigation device in accordance with the fifth aspect of the present invention, since the communication with the communication facility by the current position detecting member for detecting the current position is performed by the Bluetooth communication, the current position which is economical and has a fast response is obtained. Can be detected.

In the portable navigation device according to the sixth invention, in order to achieve the above object, in addition to the structure of the fourth invention, the communication facility is an automatic vending machine having a communication function of sales information. Is characterized by.

In the portable navigation device according to the sixth aspect of the present invention, the current position detecting member of the slave unit has a communication function which has position information indicating its own position on the map and is arranged at various places in the city area. By detecting the current position by communicating with the vending machine, it is possible to perform a quick response and perform cost-effective navigation by using the existing facility.

In order to achieve the above-mentioned object, a portable navigation device according to a seventh invention is characterized in that, in addition to the configuration of the first invention, the current position detecting member detects a current position on a map by a global positioning system. Is performed, which makes it possible to perform highly accurate position detection.

In order to achieve the above-mentioned object, a portable navigation device according to an eighth aspect of the present invention is, in addition to the configuration of the first aspect of the present invention, a recording medium in which the map image data providing member is detachably attached to a main body. It is characterized by being.

According to the portable navigation device of the eighth aspect of the present invention, the map image data for displaying the map image on the image display member of the main body is detachably mounted on the drive of the main body, for example, a DVD. -R, DVD-R
DVD recording media such as W, DVD-ROM, DVD-RAM and CDs such as CD-ROM, CD-R, CD-RW
The map image is provided by a recording medium, whereby sufficient map image data for navigation can be provided, and required map image data can be arbitrarily provided by exchanging the recording medium.

In order to achieve the above object, a portable navigation device according to a ninth aspect of the present invention is, in addition to the configuration of the first aspect, the map image data providing member provides the map image data on a computer network. It is characterized by being downloaded from the map information providing site.

According to the portable navigation device of the ninth invention, the map information data for displaying the map image on the image display member of the main body is supplied by the map information providing site providing the map information providing service. Is downloaded from a computer via a computer network such as the Internet, thereby sufficiently supplying map image data for navigation.

In order to achieve the above-mentioned object, a portable navigation device according to a tenth aspect of the present invention has, in addition to the structure of the first aspect, a main body portion having a mounting portion for a slave unit, and the mounting portion has a slave portion. It is characterized in that the machine part is detachably mounted and united with the main body part.

According to the portable navigation device in accordance with the tenth aspect of the present invention, during navigation, the main unit and the slave unit can be separated and operated independently, and the slave unit can be attached to the main unit. By mounting the unit on the unit so that the unit can be handled integrally, it is possible to perform navigation according to the usage pattern according to the situation.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION The most preferred embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view showing an example of an embodiment of a portable navigation device according to the present invention, and FIG.
Is a perspective view showing a state in which the main body of the portable navigation device and the child device are combined, FIG. 3 is a front view showing the main body of the portable navigation device, FIG. 4 is a rear view of the main body, and FIG. 5 is a child of the portable navigation device. FIG. 6 is a front view showing one form of the child machine, and FIG. 6 is a rear view of the child machine.

In FIGS. 1 and 2, the portable navigation device 1 is composed of a main body 2 and two parts of a handset 3 which is detachably united with the main body 2.

As shown in FIG. 3, the main body 2 has a plate shape with a substantially rectangular outer shape, and a display 2A having a size occupying most of the central portion is arranged on the front surface portion thereof. Four operation keys 2B are arranged on a frame portion located on the left side of the display 2A.

A mounting portion is formed on the right side edge of the main body 2 by forming a concave shape that matches the shape of the left side edge of the slave 3 and fitting the slave 3 into the main body 2. 2C is formed, and a pair of coalescing detection sensors 2D for detecting that the slave unit 3 is mounted are mounted in the mounting portion 2C.

As shown in FIG. 4, a DVD drive 2E is attached to the back surface of the main body 2, and further,
A card interface (not shown), a speaker, and a headphone terminal are attached.

As shown in FIG. 5, the slave unit 3 has a substantially oblong plate-shaped slave unit operating portion 3A and a plate-shaped display unit having substantially the same external shape as the slave unit operating portion 3A. 3B, and a base end portion of the display portion 3B is rotatably connected to an upper end portion of the child device operating portion 3A by a rotation support portion 3C, whereby the display portion 3B is attached to the child device operating portion 3A. In contrast, it is designed to be opened and closed.

On the front surface of the slave unit operating portion 3A of the slave unit 3,
Various operation keys 3Aa including a numeric keypad are arranged over the entire surface, and a microphone 3Ab is attached to a lower portion (a portion opposite to the side supported by the rotation support portion 3C).

Then, on the rear surface of the slave unit operating section 3A,
As shown in FIG. 6, the card interface 3Ac is attached to the central portion, and is housed in the casing of the slave unit operating portion 3A at the lower portion (the portion opposite to the side supported by the rotation support portion 3C). The CCD camera 3Ad is slidably mounted between a position where it extends and a position where it projects outward from the inside of the casing of the slave unit operation portion 3A along its axis.

Furthermore, a headphone terminal 3Ae is attached to the right side portion on the back side of the handset operation portion 3A.

A display 3Ba having a size that occupies most of the central portion is attached to the front surface of the display portion 3B of the child device 3, and a speaker 3Bb is attached to the tip portion.

A jog dial 3Bc is arranged coaxially with the rotation support portion 3C at the base end portion of the display portion 3B (the portion on the side supported by the rotation support portion 3C), and the outer edge portion is the display portion 3B. It is attached rotatably in both directions in an exposed state from the base end of the rotation support part 3C.
The joystick 3Bd is attached at a position coaxial with.

Further, the rotation support portion 3C of the slave unit 3 has
A rotational position detection sensor, which will be described later, that detects opening / closing of the display unit 3B with respect to the slave unit operation unit 3A is attached.

FIG. 7 is a block diagram showing an example of the configuration of the control unit built in the main body 2 of the portable navigation device 1.

In FIG. 7, a display 2A is connected to the CPU 20 via a display driver 21, a speaker 2F and a headphone terminal 2G are connected to the CPU 20 via an audio driver 22, and the coalescence detection sensor 2 is connected.
D, DVD-R, DVD-RW, DVD-ROM, DV
DVD recording medium such as D-RAM (in this example,
8 cmDVD-R or 8 cmDVD-RW) is mounted on the DVD drive 2E, a card interface 2H on which a memory card such as smart media, compact flash (registered trademark), memory stick, or multimedia card is mounted, and the CPU 20 is connected. A ROM 23 in which driver software of each device is stored, a RAM 24 in which data is written, operation keys 2B, and a navigation ROM 25 in which an application program for navigation are stored are respectively connected.

Further, in the CPU 20, the antenna 26 built in the casing of the main body 2 is provided in the communication circuit 2
7 and a data processing circuit 28 which controls the clocks of various signals transmitted and received by the communication circuit 27 and functions as an interface of the CPU.

In the control unit of the main body 2 of the portable navigation device 1, the antenna 26 communicates with the slave unit 3 by communication using Bluetooth or the like, and transmits and receives data and programs to and from each other, as will be described later. The CPU 20 transmits and receives control signals to and from each other, and the CPU 20 transmits various data accumulated in the RAM 24 and various programs such as JAVA (registered trademark) applet from the antenna 26 to the child device 3, and R of data transmitted from the machine 3 via the antenna 26
Between the AM 24 and the DVD recording medium mounted in the DVD drive 2E, the storage in the memory card mounted in the card interface 2H, and between the slave unit 3 via the antenna 26 according to various programs installed in the slave unit 3. Controls various controls such as mutual remote control.

The CPU 20 further stores a RAM on the basis of an operation signal input by operating the operation key 2B.
Application stored on the DVD recording medium mounted on the DVD drive 2E or the memory card mounted on the card interface 2H.
Program startup, display of images and images based on data recorded on these recording media on the display 2A, audio output to headphones connected to the speaker 2F or headphone terminal 2G, navigation ROM
It controls operation of various functions installed in the main body 2 such as execution of the navigation application program recorded in 25.

Then, the CPU 20 will be described later when the slave 3 is mounted on the operation key 2B of the main body 2 and a detection signal indicating that the operation key 2B has been combined is input from the combination detection sensor 2D. It controls the control of the cooperative operation with the child device 3.

The main body 2 includes a ROM 23, a RAM 24,
The application programs stored in the navigation ROM 25 and the D loaded in the DVD drive 2E
The application program stored in the VD recording medium or the memory card mounted on the card interface 2H configures the function to be mounted, and RA
By rewriting the application program in M24 or replacing the DVD recording medium or the memory card, the user customizes the configuration of the functions installed in the portable information terminal 1 to a desired configuration.

FIG. 8 is a block diagram showing an example of the configuration of the control unit built in the child device 3 of the portable information terminal 1.

In FIG. 8, the display 3Ba is connected to the CPU 30 through the display driver 31,
Speaker 3Bb and headphone terminal 3Ae are audio
The driver is connected via the driver 32, the CCD camera 3Ad is connected via the signal processing circuit 33, and the display unit 3 is connected.
The rotation position detection sensor 34 of B, the card interface 3Ac in which a memory card such as a smart media, a compact flash, a memory stick, and a multimedia card is mounted, and the ROM 35 in which the driver software of each device connected to the CPU 30 is stored. , RAM3 where application programs and data are written
6, operation keys 3Aa, joystick 3Bd, and jog dial 3Bc are connected to each other.

Further, in the CPU 30, an antenna 37 built in the casing of the slave unit 3 is provided in the communication circuit 3
8 and a signal processing circuit 39 that functions as an interface of the CPU while controlling clocks of various signals transmitted and received by the communication circuit 38.

The microphone 3Ab and the ringer 41 are connected to the audio driver 32 via a voice codec 40.

In the control unit of the handset 3 of the portable navigation device 1, the antenna 37 communicates with the main body 2 by means of communication using Bluetooth or the like to mutually transmit and receive data and programs, as will be described later. The CPU 30 transmits / receives control signals to / from each other and connects to a computer network such as the Internet. The CPU 30 includes an antenna 37 for various data stored in the RAM 36 and various programs.
From the main body 2 to the main body 2 and the antenna 37 from the main body 2
RAM3 for data and programs sent via
6 or a memory card mounted on the card interface 3Ac, mutual remote control with the main body 2 via the antenna 37 according to various programs mounted on the slave 3, connection with a computer network It controls various controls such as.

The CPU 30 further operates the RAM 3 based on an operation signal input by operating the operation keys 3Aa, the jog dial 3Bc, or the joystick 3Bd.
6, execution of application programs stored in a memory card mounted on the card interface 3Ac, display of images and images based on data recorded in these recording media on the display 3Ba, and , Speaker 3Bb and headphone terminal 3A
voice output to the headphones connected to e, voice codec 40 and audio from microphone 3Ab
Audio input via driver 32, audio output to ringer 41 via audio driver 32 and audio codec 40, RAM 36 for image data captured by CCD camera 3Ad and captured image data and memory card mounted on card interface 3Ac It controls the operation control of various functions that the slave unit 3 has such as saving to.

Then, the CPU 30 controls the operation mode switching based on the rotational position detection signal detected by the rotational position detection sensor 34 with respect to the child device operating portion 3A of the display portion 3B of the child device 3. There is.

The functions of the slave unit 3 are configured by the application programs stored in the ROM 35 and the RAM 36 and the application programs stored in the memory card mounted on the card interface 3Ac. -By rewriting the program or replacing the memory card, the user customizes the configuration of the functions installed in the portable information terminal 1 to a desired configuration.

Next, the form of navigation by the portable navigation device 1 will be described.

The portable navigation device 1 is
Even when the main body 2 and the slave unit 3 are separated as shown in FIG. 1, the slave unit 3 is attached to the mounting portion 2C of the main body 2 as shown in FIG. The navigation function can be executed in any of the following states. However, in the following, as shown in FIG. 1, when the mobile device 3 performs navigation in a form separated from the main body 2. Will be described as an example.

When carrying out navigation by the portable navigation device 1, the main body 2 is loaded with a DVD recording medium on which a map image is recorded in the DVD drive 2E, and the navigation application program stored in the navigation ROM 25 is started. By doing so, the navigation map image is displayed on the display 2A.

In the child device 3, the CPU 30 also performs navigation and
After switching to the mode, the navigation application program stored in the ROM 35, the RAM 36, or the memory card mounted on the card interface 3Ac is activated, and is detected on the display 3Ba by a method described later. A display showing the current position is displayed.

As shown in, for example, FIG. 9, the portable navigation device 1 carries out the navigation during walking by carrying the slave unit 3 on the arm or the like and holding the main body 2 in the hand. .

The detection of the current position in the portable navigation device 1 is performed by the communication function of the slave unit 3 which will be described later, and the position detection data indicating the current position detected by the slave unit 3 is the slave position. Communication circuit 3 of machine 3
7 is transmitted to the main body 2 by Bluetooth communication performed via the antenna 37 and the antenna 26 between the communication circuit 27 and the communication circuit 27 of the main body 2.

Then, based on the position detection data indicating the current position transmitted from the handset 3, a position corresponding to the position detection data on the map image displayed on the display 2A of the main body 2 is displayed, for example, in the figure. As described above, by displaying the point mark m in the shape of a person, the user is guided to the destination.

Further, in the main body 2, the CPU 20 searches the address database recorded on the DVD recording medium mounted on the DVD drive 2E based on the position detection data transmitted from the slave unit 3, The address data corresponding to the position detection data is read from the DVD recording medium and transmitted to the child device 3.

In the handset 3, the CPU 30 displays the address indicating the detected current position on the display 3Ba based on the address data transmitted from the main body 2 (FIG. 1).
reference).

The detection of the current position by the handset 3 is performed, for example, by
It is possible to mount a memory card having a GPS function on the card interface 3Ac of the handset 3 to detect the position by the GPS, but as shown in FIG.
The PHS communication function and the Bluetooth communication function provided in the handset 3 are used to communicate with a PHS base station and a Bluetooth communication with an antenna for sales management communication attached to a vending machine.

When the portable navigation device 1 is used in a state where the main body 2 and the child device 3 are combined as shown in FIG. 2, the main body 2 has the child device 3 fitted in the mounting portion 2C. This is detected by the union detection sensor 2D attached to the mounting portion 2C, and the union detection sensor 2D
The CPU 20 recognizes that the slave unit 3 is united by inputting the united detection signal of the slave unit 3 to the CPU 20.

The main body 2 and the cordless handset 3 are combined with each other by the engaging relationship with the cordless handset 3 by the engaging portion provided on the mounting portion 2C and the attraction by the magnet.

Then, when the uniting with the slave unit 3 is detected, the CPU 20 switches to the uniting mode,
By Bluetooth communication performed between the antenna 26 of the main body 2 and the antenna 37 of the slave 3, remote control is performed between the CPU 20 and the CPU 30 of the slave 3, and the slave 3 using the operation keys 2B of the main body 2 is performed. Operation, the operation keys 3Aa of the child device 3, the jog dial 3Bc,
The main body 2 can be operated by the joystick 3Bd.

In the uniting mode of the main unit 2 and the slave unit 3, by utilizing the double window of the display 2A and the display 3Ba, the display unit 3B of the slave unit 3 is displayed as shown in FIG. By positioning it at a position opened 90 ° with respect to the machine operation unit 3A, the user can
It becomes possible to confirm the map image displayed on the display 2A of the main body 2 and the address of the current position displayed on the display 3Ba of the slave 3 at positions close to each other.

At this time, the slave unit operating section 3A of the slave unit 3
Since the operation keys 3Aa arranged on the remote controller 3 are exposed and can be used, the slave unit operating portion 3A is used as a keyboard, and the operation keys 2B of the main body 2 are used as cursor keys, and the jog dial 3Bc of the slave unit 3 and By using the joystick 3Bd instead of the mouse, various operation inputs such as setting a target position and setting conditions for route search can be easily performed.

Then, as described above, the display unit 3 of the slave unit 3
When the usage pattern of the child device 3 is changed by opening and closing B with respect to the child device operating unit 3A, the position of the display unit 3B of the child device 3 with respect to the child device operating unit 3A is the rotational position detection sensor 34. (See FIG. 8), the rotation position detection signal is input to the CPU 30, and further transmitted to the CPU 20 of the main body 2 by Bluetooth communication, so that the main body 2 and the slave unit 3 correspond to respective usage patterns. Automatically switched to the specified mode.

In the above example, the case where the map image data for displaying the navigation map image on the display 2A of the main body 2 is provided by the DVD recording medium mounted on the DVD drive 2E will be described. However, it may be provided by a CD-ROM instead of the DVD recording medium, or may be provided by a map information providing site on the Internet via the child device 3.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a portable navigation device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing another example of a usage pattern of the portable navigation device.

FIG. 3 is a rear view of the main body of the portable navigation device.

FIG. 4 is a rear view of the main body.

FIG. 5 is a front view of a child device of the portable navigation device.

FIG. 6 is a rear view of the child device.

FIG. 7 is a block diagram showing a circuit configuration of a main body of the portable navigation device.

FIG. 8 is a block diagram showing a circuit configuration of a child device of the portable navigation device.

FIG. 9 is an explanatory diagram for explaining a state of using the portable navigation device.

FIG. 10 is a front view showing still another example of the usage pattern of the child device of the same example.

[Explanation of symbols]

1 ... Portable navigation device 2… Main body (main body) 2A ... Display (image display member) 2B ... Operation key 2C ... Mounting part 2D ... coalescence detection sensor 2E… DVD drive 2F ... Speaker 2G ... headphone terminal 2H ... Card interface 3… Child machine (child machine section) 3A ... Remote unit operation part 3Aa ... Operation key 3Ab ... Microphone 3Ac ... Card interface 3Ad ... CCD camera 3 3Ae ... Headphones terminal 3B ... Display section 3Ba ... Display (image display member) 3Bb ... Speaker 3Bc ... Jog dial 3Bd ... joystick 3C ... Rotation support 20 ... CPU 21 ... Display driver 22 ... Audio driver 23 ... ROM 24 ... RAM 25 ... Navigation ROM 26 ... Antenna 27 ... Communication circuit 28 ... Data processing circuit 30 ... CPU 31 ... Display driver 32 ... Audio driver 33 ... Signal processing circuit 34 ... Rotational position detection sensor 35 ... ROM 36 ... RAM 37 ... Antenna 38 ... Communication circuit 39 ... Data processing circuit 40… Voice codec 41 ... Ringer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04Q 7/34 G06F 1/00 312G // G01S 5/14 H04B 7/26 106A (72) Inventor Daisuke Suma 1-4-1 Meguro, Meguro-ku, Tokyo Pioneer Design Co., Ltd. (72) Inventor Mizuki Tomono 1-4-1 Meguro, Meguro-ku, Tokyo Pioneer Design Co., Ltd. (72) Inventor Tatsushi Funayama 1-4-1 Meguro, Meguro-ku, Tokyo F-term in Pioneer Design Co., Ltd. (reference) 2F029 AA07 AB07 AC02 AC09 AC14 AC18 AC19 5H180 AA21 BB04 BB05 BB13 FF05 FF27 FF33 5J062 AA05 BB05 CC07 HH05 5K067 BB36 DD20EE02 KK16 LL12 MM04 MM06 NN18 NN40 TT02

Claims (10)

[Claims] 1. A main unit and a slave unit, wherein the slave unit detects a current position on a map and a current position detection member detects position detection data in the main unit. A first communication member for transmitting, wherein the main body unit is an image display member, a map image data providing member for providing map image data displayed on the image display unit, and a map image data providing member A map image display member that reads the map image data of the range and displays the map image on the image display member, a second communication member that communicates with the first communication member of the slave unit, and this map image display member A current position display member for displaying the current position based on the position detection data transmitted from the first communication member of the slave unit to the second communication member on the map image displayed on the image display member by ing, A portable navigation device characterized in that 2. An address data providing member for providing address data indicating an address on a map image, and position detection data transmitted from the first communication member of the slave unit to the second communication member by the main body unit. An address data search member that searches address data corresponding to the position detection data from the address data providing member based on the above, and transmits the searched address data to the first communication member of the slave unit via the second communication member. Further, the slave unit has an image display member and an address display for displaying an address on the image display member based on the address data transmitted from the second communication member of the main body to the first communication member. The portable navigation device according to claim 1, further comprising a member. 3. The portable navigation device according to claim 1, wherein communication between the first communication member of the slave unit and the second communication member of the main body is performed by Bluetooth. 4. The portable navigation device according to claim 1, wherein the current position detecting member detects the current position on the map by communicating with a communication facility equipped with position information located in an urban area. 5. The portable navigation device according to claim 4, wherein communication between the current position detection member and a communication facility is performed by Bluetooth. 6. The portable navigation device according to claim 4, wherein the communication facility is an automatic vending machine having a sales information communication function. 7. The current position detecting member detects a current position on a map by a global positioning system.
The portable navigation device according to. 8. The portable navigation device according to claim 1, wherein the map image data providing member is a recording medium that is detachably attached to the main body. 9. The portable navigation device according to claim 1, wherein the map image data providing member downloads the map image data from a map information providing site on a computer network. 10. The main body section has a mounting section for a slave unit,
The portable navigation device according to claim 1, wherein the slave unit is detachably mounted on the mounting unit and united with the main unit.