JP2002148052A - Car navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a car navigation system which can be removed easily from a vehicle, such as the automobile, etc., and with which the user can obtain guide information at walking time by carrying the system with it without difficulty. SOLUTION: The central processing unit 4 of this car navigation system is provided with a discriminating means 41 which discriminates whether or not the vehicle reaches its destination, a down-loading means 44 which down- loads the map of the destination from a map information supplying medium section 19 when the means 41 discriminates that the vehicle reaches the destination, and a mode switching means 42 which switches the mode from a car navigation mode to a portable mode when the means 42 discriminates that the main body device and operating device of the system are separated from each other. The unit 4 is also provided with a displaying means 43 which displays the present location on the down-loaded map.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a main unit including a map information supply unit and an operation unit including a central processing unit, an operation unit, and a display unit, and displays a destination and a current position on the display unit. The present invention relates to a car navigation device.

[0002]

2. Description of the Related Art A car navigation device is mounted on a car and displays a destination (destination) and a current position of the car. In this manner, a car navigation device for displaying the destination and the current position is provided. It is convenient if it can be used for applications other than automobiles, for example, while walking.

FIG. 8 is a block diagram showing a conventional car navigation device.

In FIG. 8, A is an operation device, B is a main unit, and C is a broadcasting unit. In the operation device A, 1 is an operation input unit having keys for performing each operation, 2 is a display unit for displaying image data processed by the central processing unit 4 as needed, and 4 is a central unit for controlling the overall operation. Arithmetic unit (C
PU), 5 is a GPS unit for the operating device A for inputting position information indicating the current position from the antenna at any time, 6 is a menu screen or a program that summarizes communication-related operation commands, various set values, screen display characters, etc. ROM to do, 7
Stores data such as a list of telephone numbers of communication partners input from the operation input unit 1, various user setting values, and input information from outside (for example, an Internet site), and deletes the stored data as necessary. RAM 8, a secondary battery unit having a built-in rechargeable battery / charger, 9 a portable telephone such as a PHS, a digital portable telephone, and 10 a communication interface unit (communication interface unit as a connection interface unit of the portable telephone 9). (I / F unit). In the broadcasting unit C, reference numeral 12 denotes a television tuner unit (TV unit), and reference numeral 13 denotes an FM receiving unit (FM unit) having a receiver function of FM multiplex broadcasting and FM radio broadcasting. Further, in the main device B,
Reference numeral 16 denotes an audio output unit that amplifies an input audio signal and outputs the amplified signal to a speaker 16a, 17 denotes a GPS unit for a main unit B that inputs position information indicating a current position from an antenna at any time, 18
Is a power supply unit that supplies power to the operation device A and the broadcasting unit C together with the main unit B, and 19 is a map information supply media unit that has a DVD, a CD-ROM, etc., and stores nationwide map information and various drive information ( A map information supply unit), 20 is a gyro as an acceleration sensor, and 25 is a parking brake sensor unit that detects a parking brake signal a from an automobile. In response to an instruction from the central processing unit 4, the mobile phone 9 connects to a communication connection destination stored in the RAM 7, performs data communication, and transmits and receives position information, character information, images, sounds, and the like. The communication interface unit 10 determines whether or not the mobile phone 9 is connected and the connected mobile phone 9.
And the communication result of the transmitted / received data is monitored, and the communication result is notified to the central processing unit 4. The parking brake signal a is "L" in the locked state and "H" in the released state.

[0005] When the car navigation device thus configured is used for walking, it is necessary to carry all of the operation device A, the main device B, and the broadcasting unit C. Thus, even when walking, a map of the current position and a predetermined range thereof can be displayed, and can be used as guidance information during walking.

[0006]

However, in the conventional car navigation system, it is necessary to carry the vehicle with the main unit B and the broadcasting unit C connected while walking.
In particular, the main unit B has a problem that it is heavy because it includes the power supply unit 18 and the gyro 20, and it is difficult to carry the main unit B at a slightly long distance. In addition, it is necessary to remove the main unit B from a vehicle such as an automobile. However, there is a problem that removal is complicated.

[0007] In this car navigation device, it is required to be able to easily remove the vehicle from a vehicle such as an automobile and to obtain guide information without causing difficulty in carrying the device even when walking.

[0008] The present invention provides a car navigation device which satisfies this demand and which can be easily removed from a vehicle such as an automobile and can obtain guidance information without causing difficulty in carrying even when walking. Aim.

[0009]

In order to solve this problem, a car navigation apparatus according to the present invention comprises a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery. A car navigation device having an operation device including a unit and connectable to the main device via a connection connector, wherein the central processing unit determines whether or not the vehicle has reached the destination; Download means for downloading the map of the destination from the map information supply unit to the storage media unit when it is determined that the operation has been performed, and mode switching for switching from the car navigation mode to the portable mode when the main apparatus and the operation apparatus are determined to be separated. And a display means for displaying the current position on the downloaded map.

Thus, it is possible to obtain a car navigation device which can be easily removed from a vehicle such as an automobile and can obtain guidance information without difficulty in carrying even when walking.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A car navigation device according to a first aspect of the present invention includes a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, and a secondary battery unit. A car navigation device having an operation device connectable to a main body device via a connection connector, wherein the central processing unit determines whether or not the destination has been reached, and determines that the destination has been reached. Download means for downloading a map of the destination from the map information supply unit to the storage medium unit when the operation is performed, and mode switching means for switching from the car navigation mode to the portable mode when it is determined that the main device and the operation device are separated, Display means for displaying the current position on the downloaded map.

With this configuration, the main unit and the operating device can be easily separated electrically and mechanically by the connecting connector, so that they can be easily removed from a vehicle such as an automobile. Before the separation of the main unit and the operating device after reaching the destination, the map information stored in the main unit is downloaded to the storage media unit,
Since the mode can be changed to the portable mode, it is possible to display only the destination and the current position by carrying only the operation device when walking.

According to a second aspect of the present invention, in the car navigation device according to the first aspect, the operation device includes a communication interface unit that is an interface with a portable telephone, and the download unit includes:
The map information is downloaded from a predetermined site via a communication interface unit to a storage media unit.

With this configuration, it is possible to download map information from the server via the communication interface unit, and it is possible to obtain map information without a map information supply unit.

According to a third aspect of the present invention, the car navigation device includes a main unit including a map information supply unit and a power supply unit, and includes a central processing unit, an operation unit, a storage media unit, a secondary battery unit, and a GPS unit, and is connected to the main unit. A car navigation device having an operation device connectable via a connector, comprising a GPS antenna fixedly connected to the operation device.

With this configuration, the antenna has a function of not being obstructed since the antenna is fixedly connected to the operation device when the portable device is carried.

According to a fourth aspect of the present invention, there is provided a car navigation apparatus including a map information supply unit, a power supply unit, a main unit including a GPS antenna, a central processing unit, an operation unit, a storage medium unit, a secondary battery unit, a GPS unit, a GPS antenna. And a control device that can be connected to the main device via a connection connector, wherein the GPS antenna of the main device is detachably connected to the main device,
The antenna is fixedly connected to the operation device.

With this configuration, the antenna is fixedly connected to the operation device when carrying the antenna, so that the antenna is not in the way. When the vehicle is mounted on the vehicle, the antenna is detachably connected to the main body device. Since the antenna can be installed on the roof, there is an effect that high-sensitivity reception becomes possible.

A car navigation device according to a fifth aspect is an interface between a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery unit, and a portable telephone. A car navigation device having an operation device including a communication interface unit and connectable to a main body device via a connection connector, wherein the central processing unit determines whether or not the vehicle has reached a destination, Download means for downloading a map of the destination from a predetermined site on the Internet via the map information supply unit or the communication interface unit to the storage medium unit when it is determined that the destination has been reached, and switching from the car navigation mode to the portable mode after the download The mode switching means and the operation device are separated from the main unit in the portable mode. Second determining means for determining whether or not the operating device has not been disconnected from the main body device, and second determining means for determining whether or not a predetermined time has elapsed since the transition to the portable mode. The mode switching means switches the mode from the portable mode to the car navigation mode when the second determining means determines that the time is equal to or longer than a predetermined time.

According to this configuration, the main unit and the operating device can be easily separated electrically and mechanically by the connecting connector, so that the main unit and the operating device can be easily detached from a vehicle such as an automobile. When the operating device is not disconnected from the main device even after shifting to the portable mode, and the time during which the operating device has not been disconnected has exceeded a predetermined time,
Since the mode is switched from the mobile mode to the car navigation mode, even if the vehicle reaches the destination, before the main device and the operation device are separated from each other, the mobile mode is temporarily shifted to the car navigation mode after a predetermined time elapses. It has the effect of returning.

According to a sixth aspect of the present invention, the car navigation apparatus includes a main unit including a map information supply unit and a power supply unit, and a central processing unit, an operation unit, a storage medium unit, and a secondary battery unit. A central processing unit comprising: a first determination unit for determining whether or not a destination has been reached; and a destination when determining that the destination has been reached. Download means for downloading the map from the map information supply unit to the storage medium unit, second determination means for determining whether or not the operating device has been disconnected from the main unit during the download, and disconnection in the second determination means. Display means for displaying a message prompting the user to download map information of the destination when it is determined that the destination has been reached.

According to this configuration, the main unit and the operating device can be easily separated electrically and mechanically by the connecting connector, so that the main unit and the operating device can be easily removed from a vehicle such as an automobile. When the map information stored in the main unit cannot be completely downloaded to the storage media unit before the main unit and the operation device are separated after reaching the destination, the user is prompted to download the map information. Since the display can be displayed, the user recognizes that the download is incomplete, and has an effect that the download can be completed by combining the main device and the operation device.

The car navigation device according to the present invention is an interface between a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery unit, and a portable telephone. A car navigation device having an operation device including a communication interface unit and connectable to a main unit via a connection connector, wherein the central processing unit includes a parking brake determination unit that determines whether the parking brake is in a locked state or a released state. A first mode switching unit that switches the car navigation mode to the portable mode when it is determined that the vehicle is in the locked state; a first determination unit that determines whether the current position can be recognized; and a determination that the current position can be recognized. The map of the current position is displayed on a predetermined site on the Internet via the map information supply unit or the communication interface unit. Means for downloading from the car navigation mode to the portable mode after downloading, and second determining means for determining whether or not the map of the current position has been downloaded in the portable mode. And a display means for displaying the current position on the downloaded map when it is determined that the map at the current position is downloaded.

With this configuration, the main unit and the operating device can be easily separated electrically and mechanically by the connecting connector, so that the main unit and the operating device can be easily removed from a vehicle such as an automobile. At the current position where the parking brake is locked, the map information of the current position from the map information supply unit or a predetermined site on the Internet can be downloaded to the storage media unit, so that when the parking brake is locked, In addition, there is an effect that guidance information at the time of walking can be obtained based on the map information of the current position displayed on the separated operation device.

The car navigation device according to the present invention is an interface between a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery unit, and a portable telephone. A car navigation device having an operation device including a communication interface unit and connectable to a main unit via a connection connector, wherein the central processing unit includes a parking brake determination unit that determines whether the parking brake is in a locked state or a released state. A first mode switching unit that switches the car navigation mode to the portable mode when it is determined that the vehicle is in the locked state; a first determination unit that determines whether the current position can be recognized; and a determination that the current position can be recognized. The map of the current position is displayed on a predetermined site on the Internet via the map information supply unit or the communication interface unit. From the car navigation mode to the portable mode after the download, and the parking brake determining means when the parking brake is determined to be in the locked state after shifting to the portable mode. Second determining means for determining whether or not the operating device has been disconnected from the main device; and determining whether or not the time during which the operating device has not been disconnected from the main device has exceeded a predetermined time after shifting to the portable mode. And third mode switching means for switching from the portable mode to the car navigation mode when the third determining means determines that the time is equal to or longer than a predetermined time.

According to this configuration, the main unit and the operating unit can be easily separated electrically and mechanically by the connecting connector, so that the main unit and the operating unit can be easily removed from a vehicle such as an automobile. When the operating device is not disconnected from the main device even after shifting to the portable mode, and the time during which the operating device has not been disconnected has exceeded a predetermined time,
Since the mode is switched from the mobile mode to the car navigation mode, even if the vehicle reaches the destination, before the main device and the operation device are separated from each other, the mobile mode is temporarily shifted to the car navigation mode after a predetermined time elapses. It has the effect of returning.

According to a ninth aspect of the present invention, the car navigation device includes a main unit including a map information supply unit and a power supply unit, and a central processing unit, an operation unit, a storage medium unit, and a secondary battery unit. A central processing unit comprising: a download unit configured to download map information from a map information supply unit to a storage medium unit by an input from an operation unit; And a mode switching means for switching from the car navigation mode to the portable mode when it is determined that the two are separated from each other, and a display means for displaying the current position on a map downloaded in the portable mode.

According to this structure, the present position can be displayed on a map when the operating device is separated from the main device.

According to a tenth aspect of the present invention, in the car navigation device according to the ninth aspect, the operating device includes a communication interface unit that is an interface with a portable telephone, and the download unit includes:
The map information is downloaded from the server via the communication interface unit to the storage media unit.

With this configuration, it is possible to download map information from a predetermined site via the communication interface unit, and it is possible to obtain map information without a map information supply unit.

The car navigation device according to the eleventh aspect includes a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a display unit, a storage medium unit, a secondary battery unit, and a position positioning unit. An operating device connectable to the main unit via a connection connector is provided.

With this configuration, there is an effect that the current position can be displayed on the map using only the operation device.

A car navigation device according to a twelfth aspect includes a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a display unit, a storage media unit, a secondary battery unit, and a position positioning unit. An operation device connectable to the main device via a connection connector, and when the main device and the operation device are connected, map information from the map information supply unit is displayed on the display unit. When the main unit and the operation device are not connected, the central processing unit controls the map information from the storage medium unit to be displayed on the display unit.

With this configuration, when the main unit and the operation device are connected, a wide range of maps can be displayed by using the map information from the map information supply unit. It has the effect of using map information from a small and lightweight storage media unit.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS.

(Embodiment 1) FIG. 1 is a block diagram showing a car navigation system according to Embodiment 1 of the present invention.

In FIG. 1, an operation input unit 1, a display unit 2,
Central processing unit 4, GPS unit 5, ROM 6, RAM 7, secondary battery unit 8, portable telephone 9, communication interface unit 1
0, TV unit 12, FM unit 13, audio output unit 16, speaker 16a, GPS unit 17, power supply unit 18, map information supply media unit 19, gyro 20, parking brake sensor unit 25 are the same as those in FIG. With the same reference numerals,
Description is omitted. A1 is an operation device, B1 is a main device, C
1 is a broadcast unit, 3 is a screen operation unit mounted on the surface of the screen of the display unit 2, and also operates as an input device by touching a predetermined place on the displayed screen, 11 stores various data,
An external storage media unit 14 that can read and exchange data with other similar devices; 14 amplifies an input audio signal and outputs a speaker 15a or a handset 15b
Are output connectors 21 to 24 are connection connectors. The GPS unit 5 inputs the position information indicating the current position to the central processing unit 4 when walking or the like, and the central processing unit 4
The input position information is collated with the map information of the external storage media unit 11, and the current position is displayed as an icon or the like on the map screen on the corresponding latitude / longitude. The GPS unit 17 inputs position information indicating the current position in the car navigation mode to the central processing unit 4, and the central processing unit 4 converts the input position information into the map information supply media unit 1 as in the case of the GPS unit 5.
The current position is displayed as an icon or the like on the map screen on the corresponding latitude / longitude by collating with the map information of No. 9. The map information supply media section 19 stores map information of the whole country, various drive information, and the like. When the operation device A1 is separated, the map information of the current position (the current position and its surroundings) is recognized in advance by recognizing that the destination has been reached from the map information or by specifying the area by the user. Map information of a predetermined place (for example, a destination) is automatically or manually loaded into the RAM 7 or the external storage medium unit 11. In FIG. 1, the broadcasting unit C1 is electrically connected to the operation device A1 via the connection connectors 23 and 24. However, a CCD camera may be connected to the operation device A1. In addition, a GPS antenna is connected to each of the operation device A1 and the main device B1, or a connector is provided for connecting each of them. The antenna of the main device B1 is detachably connected to the main device B1. Is fixedly connected to the operating device A1.

FIG. 2 is a functional block diagram showing the central processing unit (CPU) 4 of the operating device A1 of the car navigation device shown in FIG.

In FIG. 2, reference numeral 41 denotes determination means for performing various determinations; 42, mode switching means for switching between the car navigation mode and the portable mode; 43, display means for controlling display contents on the display unit 2; A download unit 45 for downloading map information from a predetermined site on the Internet via the information supply media unit 19 or the communication interface unit 10 to the external storage media unit 11, and a parking brake determination unit 45 for determining whether the parking brake is locked or unlocked It is. Speaking of correspondence with the claims, the judging means 41 includes first to third judging means.

The operation of the car navigation apparatus thus configured will be described with reference to FIGS. FIG. 3 is a flowchart showing basic processing in the central processing unit 4, and FIG. 4 is a flowchart showing portable transfer processing (1) in the central processing unit 4. Note that the car navigation device in FIG. 1 has a configuration common to each embodiment, and the basic process in FIG. 3 is a process common to each embodiment.

In FIG. 3, first, the judging means 41 judges whether or not the operating device A1 is separated from the main device B1 (S1). If it is determined that they are not separated, the backlight brightness of the LCD of the display unit 2 is set to the standard state (S
2), the GPS unit 17 is enabled (S3), and the mode is automatically switched to the car navigation mode (S4). If it is determined in step S1 that the display is separated, the backlight brightness of the LCD of the display unit 2 is set to be lower than the standard brightness (S5), the GPS unit 5 is enabled (S6), and the mode is automatically switched to the portable mode (S7). Next, the judging means 41 judges whether or not the map information of the destination or the current position has been downloaded (S8).
The display means 43 displays the destination and the current position on the downloaded map (S9). If it is determined that the map information has not been downloaded, a message prompting the user to download the map information is displayed, and the display disappears after a predetermined time (S1).
0).

Referring to FIG. 4, first, a destination of a car is set, a route is automatically set (S11), and route guidance is performed so as to travel along the set route (S1).
2). Next, the determination unit 41 determines whether or not the vehicle has reached the destination by measuring the current position by the GPS unit 17 (S13). When it is determined that the user has arrived at the destination, the download unit 44 transmits the city map information of a predetermined range around the destination including the destination from the map information supply media unit 19 or a predetermined site on the Internet to the external storage media unit 11. Is started (S14). Next, the determining means 41 determines whether or not the download has been completed (S15), and when it is determined that the download has been completed, the display means 43 displays a message indicating that the download has been completed on the display unit 2 (S16). ). Before the download is completed, the operation device A1 is switched to the main device B1.
If it is separated from (S17), the process proceeds to step S5 in FIG. In the separated state of the operating device A1, regardless of the separated state of the broadcasting unit C1, the broadcasting unit C1 is
It may be separated from and combined with 1.

As described above, according to the present embodiment, the judging means 41 for judging whether or not the destination has been reached, and the map of the destination when it is judged that the destination has been reached, are displayed on the map information supply media unit. A download unit 44 for downloading from the device 19 to the external storage medium unit 11; a mode switching unit 42 for switching from the car navigation mode to the portable mode when it is determined that the main unit B1 and the operation device A1 are separated; And the display means 43 for displaying the current position, the main unit B1 and the operating device A1 can be easily electrically and mechanically separated from each other by the connectors 21 and 22. And the like, and the central processing unit 4 includes the main unit B1 and the operating unit A1 after reaching the destination. In front of the separation, the main unit B1
Can be downloaded to the external storage media unit 11 and changed to the portable mode.
At the time of walking, the destination and the current position can be displayed by carrying only the light-weight operation device A1.

The operation device A1 includes a communication interface unit 10 which is an interface with the portable telephone 9, and the download unit 44 includes the communication interface unit 1
By downloading the map information from a predetermined site via the external storage media unit 11 to the external storage media unit 11, it is possible to download the map information from the server via the communication interface unit 10 even without the map information supply media unit 19. is there. Further, by providing the GPS antenna fixedly connected to the operation device, the antenna is fixedly connected to the operation device A1 when being carried, so that the antenna does not interfere. Further, G of the main unit B1
The PS antenna is detachably connected to the main unit, and the GPS antenna of the operation device is fixedly connected to the operation device.
1, the antenna is not obstructed, and the antenna is detachably connected to the main unit B1 when mounted on a vehicle, so that the antenna can be installed outside the vehicle (for example, on the roof of a car). The sensitivity can be received.

The main unit including the map information supply media unit 19 and the power supply unit 18 and the central processing unit 4, the screen operation unit 3, the display unit 2, the external storage media unit 11, the secondary battery unit 8, and the GPS unit 5 By having an operating device that can be connected to the main unit via a connection connector, the current position can be displayed on a map with only the operating device, so that it can be easily removed from a vehicle such as an automobile, and when walking. Also, guidance information can be obtained without causing difficulty in carrying.

The main unit including the map information supply media unit 19 and the power supply unit 18 and the central processing unit 4, the screen operation unit 3, the display unit 2, the external storage media unit 11, the secondary battery unit 8, and the GPS unit 5 An operation device connectable to the main device via a connection connector, and when the main device and the operation device are connected, the map information from the map information supply media unit 19 is displayed on the display unit 2; When the main unit and the operating device are not connected, the central processing unit 4 controls the map information from the external storage medium unit 11 to be displayed on the display unit 2, thereby connecting the main unit and the operating device. In this case, a wide map is displayed using the map information from the map information supply media unit 19, and when no connection is established, the map is displayed using the map information from the small and lightweight external storage media unit 11. In order to, at the time of vehicle travel distance is large, can use a wide variety of map, also at the time of walking it is possible to obtain the guide information without causing difficulties in carrying.

(Embodiment 2) The configuration of a car navigation system according to Embodiment 2 of the present invention is the same as that of FIG. 1 as described above. The difference between the present embodiment and the first embodiment is the operation of the central processing unit 4.

The operation of the thus configured car navigation device will be described with reference to FIG. FIG.
5 is a flowchart showing a portable transfer process (2) in the central processing unit 4.

In FIG. 5, first, the destination of the car is set, a route is automatically set (S21), and route guidance is performed so as to travel along the set route (S2).
2). Next, the determination unit 41 determines whether or not the vehicle has reached the destination by measuring the current position by the GPS unit 17 (S23). When it is determined that the user has arrived at the destination, the download unit 44 transmits the city map information of a predetermined range around the destination including the destination from the map information supply media unit 19 or a predetermined site on the Internet to the external storage media unit 11. Is started (S24). Next, the determination means 41 determines whether or not the download has been completed (S25), and when it is determined that the download has been completed, the display means 43 displays a message indicating that the download has been completed on the display unit 2 (S26). ). Before the download is completed, the operation device A1 is switched to the main device B1.
If it is separated from (S27), the display means 43 displays a message prompting download on the display unit 2 and
The process moves to step S5. Next, the mode switching means 42
Automatically switches the car navigation mode to the mobile mode (S
28), the determining means 41 determines whether or not the operating device A1 has been disconnected (S29). When it is determined that the operating device A1 has been disconnected, the process proceeds to step S5 in FIG. Next, the determination means 41 determines whether or not the elapsed time from the shift to the portable mode in step S28 is equal to or longer than a predetermined time (for example, 3 minutes) while the determination that the connection is not disconnected continues (S30). When it is determined that the predetermined time has elapsed, the mode switching means 42 switches the mobile mode to the car navigation mode (S31), and returns to step S21.

As described above, according to the present embodiment, the first judging means 41 for judging whether or not the destination has been reached,
When it is determined that the vehicle has reached the destination, the map of the destination is displayed on the map information supply media unit 19 or the communication interface unit 1.
Download means 4 for downloading from a predetermined site on the Internet via the Internet 0 to the external storage media unit 11
4, a mode switching unit 42 for switching from the car navigation mode to the portable mode after downloading, a second determining unit 41 for determining whether the operating device A1 is disconnected from the main device B1 in the portable mode, and an operating device A1. A second determination unit 41 that determines whether or not a time period during which the device has not been disconnected from the main device B1 is longer than a predetermined time period after shifting to the portable mode;
When the second determination means 41 determines that the time is equal to or longer than the predetermined time, the mode is switched from the portable mode to the car navigation mode, so that the main device B1 and the operation device A1 are electrically and mechanically connected by the connectors 21 and 22. Can be easily separated from a vehicle such as an automobile, and the central processing unit 4 does not disconnect the operation device A1 from the main device B1 even after shifting to the portable mode. When the time during which the main unit B1 has not been disconnected is longer than a predetermined time, the mode is switched from the portable mode to the car navigation mode. Even if the mode is once shifted to the mobile mode, the mode is returned to the car navigation mode after a lapse of a predetermined time, so that the mode can be set to match the current state.

Further, a first judging means 41 for judging whether or not the destination has been reached, and, when judging that the destination has been reached, a map of the destination is transmitted from the map information supply media 19 to the external storage media 11. Download means 44 for downloading to the operating device A during the download.
A second judging means 41 for judging whether or not the device 1 has been detached from the main device B1; and a display for displaying a message prompting the user to download map information of the destination when the second judging means 41 judges that the device 1 has been detached. By having the means 43, the main device B1 and the operating device A1
Can be easily separated electrically and mechanically by the connection connectors 21 and 22, so that it can be easily removed from a vehicle such as an automobile. Before the main device B1 and the operating device A1 are separated from each other, the map information stored in the main device B1 or the map information from the Internet is stored in the external storage medium unit 11.
If the download is not complete, a message prompting the user to download the map information can be displayed. Therefore, the user recognizes that the download is incomplete, and connects the main unit B1 with the operation device A1. Combination allows complete download.

(Embodiment 3) As described above, the configuration of the car navigation system according to Embodiment 3 of the present invention is the same as that of FIG. The difference between the present embodiment and the first embodiment is the operation of the central processing unit 4.

The operation of the thus configured car navigation device will be described with reference to FIG. FIG.
9 is a flowchart showing a portable transfer process (3) in the central processing unit 4.

In FIG. 6, first, the parking brake determining means 45 determines whether the parking brake is in a locked state or a released state (S41). The parking brake determination means 45 determines the locked state when the parking brake signal a is “L”, and determines the released state when the parking brake signal a is “H”. When it is determined that the lock state is established, the mode switching means 42
Automatically switches the car navigation mode to the portable mode (S42). Next, the determining means 41 determines whether the current position has been recognized (measured) (S4).
3) If it cannot be recognized, it means that the map information has not been downloaded, and an error message indicating that the download of the map information has not been completed is displayed (this display disappears after a certain time) ( S4
4) Return to step S43. If it is determined that the recognition has been successful, the download means 44 downloads the city map information in a predetermined range around the area including the destination from the map information supply media unit 19 or a predetermined site on the Internet to the external storage media unit 11. To start (S45). Next, the determination means 41 determines whether or not the download has been completed (S46), and when it is determined that the download has been completed, the display means 43 displays a message indicating that the download has been completed on the display unit 2 (S47). ). Before the download is completed, the operating device A1 becomes the main device B
1 (S48), step S5 in FIG.
Move to. Next, the determining means 41 determines whether the parking brake has been released (S49). If it is determined in step S49 that the operating device A1 is in the locked state, the determining unit 41 determines whether the operating device A1 has been disconnected (S50). When it is determined that the operating device A1 has been disconnected, the process proceeds to step S5 in FIG. Next, the determination unit 41 determines whether or not the elapsed time from the determination in step S49 is equal to or longer than a predetermined time (for example, 3 minutes) while the determination that the connection is not disconnected continues (S5).
1) If it is determined that the predetermined time has elapsed, the mode switching means 42 switches the mobile mode to the car navigation mode (S52), and returns to step S49. If it is determined in step S49 that the vehicle is in the released state, the mode switching unit 42 automatically switches the mobile mode to the car navigation mode (S53), and returns to step S41.

As described above, according to the present embodiment, the parking brake determining means 45 for determining whether the parking brake is locked or released, and when it is determined that the parking brake is locked, the car navigation mode is switched to the portable mode. A first mode switching unit 42, a first determining unit 41 for determining whether or not the current position can be recognized, and a map for the current position when determining that the current position can be recognized, Download means 44 for downloading from a predetermined site on the Internet via the interface unit 10 to the external storage medium unit 11;
A second mode switching unit 42 for switching from the car navigation mode to the mobile mode after downloading, a second determining unit 41 for determining whether a map of the current position is downloaded in the mobile mode, and a map of the current position being downloaded. The display device 43 for displaying the current position on the downloaded map when it is determined that the main device B1 and the operation device A1 are easily and electrically and mechanically connected by the connectors 21 and 22. Since it can be separated, it is easy to remove it from a vehicle such as an automobile. In addition, the central processing unit 4 provides the map information supply media unit 19 or a predetermined site on the Internet at the current position where the parking brake is locked. The current location map information from the external storage media unit 11
Therefore, when the parking brake is locked, it is possible to obtain guidance information for walking based on the map information of the current position displayed on the separated operation device A1.

A parking brake determining means 45 for determining whether the parking brake is locked or released.
The first mode switching means 42 for switching the car navigation mode to the portable mode when it is determined that the vehicle is in the locked state.
First determining means 41 for determining whether or not the current position can be recognized; and, when determining that the current position can be recognized, a map of the current position is displayed on the Internet via the map information supply media unit 19 or the communication interface unit 10. Downloading means 44 for downloading from the predetermined site to the external storage media unit 11, second mode switching means 42 for switching from the car navigation mode to the portable mode after downloading, and parking brake locking after the parking brake determining means 45 shifts to the portable mode. A second determining means 41 for determining whether or not the operating device A1 is disconnected from the main device B1 when it is determined to be in the state; and a time period during which the operating device A1 is not disconnected from the main device B1 to the portable mode. A third method for determining whether or not a predetermined time has elapsed after the shift And a constant unit 41, the third mode switching unit 42, when it is determined that at least a predetermined time in the third judging means 41 by which to switch from the cellular mode to the car navigation mode, the main unit B1
And the operating device A1 can be easily separated electrically and mechanically by the connecting connectors 21 and 22. Therefore, it is easy to remove from the vehicle such as an automobile, and the central processing unit 4 is set to the portable mode. When the operation device A1 is not disconnected from the main device B1 even after the shift and the time during which the operation device A1 has not been disconnected is longer than a predetermined time, switching from the portable mode to the car navigation mode is performed, so that the destination is reached. However, before the main unit B1 and the operation device A1 are separated from each other, the mode returns to the car navigation mode after a lapse of a predetermined time even if the mode temporarily shifts to the portable mode.

(Embodiment 4) The configuration of a car navigation system according to Embodiment 4 of the present invention is the same as in FIGS. The difference between the present embodiment and the first embodiment is the operation of the central processing unit 4.

The operation of the thus configured car navigation device will be described with reference to FIG. FIG.
5 is a flowchart showing a portable transfer process (4) in the central processing unit 4.

In FIG. 7, first, when the judging means 41 judges that "map download" is selected in the menu (S61), the downloading means 44 judges that the current position has been recognized. Is downloaded to the RAM 7 from the map information supply media unit 19 of the main unit B, or the communication interface unit 10 is downloaded from a predetermined site on the Internet.
(S62). Next, it is determined whether the download has been completed (S63). If it is determined that the download has been completed, a message indicating that the download has been completed is displayed (S64). If it is determined that the operation device is separated before the download is completed (S65), an error message indicating that the map information has not been downloaded is displayed,
Proceed to S5 in FIG. When the download is completed normally and the operating device is disconnected, the current position is displayed on the downloaded map.

As described above, according to the present embodiment, a map of the current position and a predetermined range thereof can be displayed even when walking, so that it can be used as guidance information during walking.

[0061]

As described above, according to the car navigation device of the first aspect of the present invention, the main unit including the map information supply unit and the power supply unit, the central processing unit, the operation unit, the storage media unit, A car navigation device having an operating device including a secondary battery unit and connectable to a main unit via a connection connector, wherein the central processing unit determines whether or not the vehicle has reached the destination, When it is determined that the vehicle has reached the destination, a download means for downloading the map of the destination from the map information supply unit to the storage medium unit, and when it is determined that the main unit and the operation device are separated, the mode is switched from the car navigation mode to the portable mode. By having a mode switching means and a display means for displaying the current position on the downloaded map, the main unit and the operating device can be connected to the connector. Since it can be easily separated electrically and mechanically, it can be easily removed from vehicles such as automobiles, and the central processing unit separates the main unit from the operating device after reaching the destination. Before, the map information stored in the main unit can be downloaded to the storage media unit and the mode can be changed to the portable mode. Therefore, when walking, only the operation device is carried and the destination and the current position are displayed. This has the advantageous effect of being able to perform.

According to the car navigation device of the second aspect, in the car navigation device of the first aspect, the operation device includes a communication interface unit that is an interface with a portable telephone, and the download unit performs communication. By downloading map information from a predetermined site via the interface unit to the storage media unit,
It is possible to download the map information from the server via the communication interface unit, and the advantageous effect that the map information can be obtained without the map information supply unit is obtained.

According to the car navigation device of the third aspect, the main unit including the map information supply unit and the power supply unit, the central processing unit, the operation unit, the storage media unit, the secondary battery unit, the G
What is claimed is: 1. A car navigation device having an operation device including a PS unit and connectable to a main body device via a connection connector, comprising: a GPS antenna fixedly connected to the operation device, so that the antenna can be operated when carried. Has an advantageous effect that the antenna does not interfere.

According to the car navigation device of the fourth aspect, the main unit including the map information supply unit, the power supply unit, the GPS antenna and the central processing unit, the operation unit, the storage media unit, the secondary battery unit, the GPS unit, A navigation device including a GPS antenna and being connectable to the main unit via a connection connector, wherein
The S antenna is detachably connected to the main unit, and the GPS antenna of the operation device is fixedly connected to the operation device. In addition, since the antenna is detachably connected to the main unit when mounted on the vehicle,
You can install the antenna outside the car (for example, on the roof of the car)
An advantageous effect that high-sensitivity reception becomes possible is obtained.

According to the car navigation device of the fifth aspect, the interface between the main unit including the map information supply unit and the power supply unit and the central processing unit, the operation unit, the storage media unit, the secondary battery unit, and the portable telephone. A navigation device including a communication interface unit that can be connected to the main body device via a connection connector,
The central processing unit includes a first determination unit that determines whether or not the destination has been reached, and a map of the destination on the Internet via the map information supply unit or the communication interface unit when it is determined that the destination has been reached. Download means for downloading from a predetermined site to the storage media unit, mode switching means for switching from the car navigation mode to the portable mode after downloading, and second determining means for determining whether or not the operating device is disconnected from the main unit in the portable mode And a second determining means for determining whether or not a time during which the operating device has not been disconnected from the main body device is longer than a predetermined time after shifting to the portable mode. When the determination means determines that the time is equal to or longer than the predetermined time, the mode is switched from the portable mode to the car navigation mode, thereby It is possible to the device and the operating device for electrically and mechanically easily separated by the connector, it is easy to remove from a vehicle such as an automobile, also,
The central processing unit switches from the portable mode to the car navigation mode when the operating device is not disconnected from the main unit even after shifting to the portable mode and the time during which the operation device has not been disconnected is longer than a predetermined time. Therefore, even when the vehicle arrives at the destination and before the main unit and the operation device are separated from each other, an advantageous effect of returning to the car navigation mode after a lapse of a predetermined time even if the mobile device temporarily shifts to the mobile mode is obtained.

According to the car navigation device of the present invention, a main unit including a map information supply unit and a power supply unit and a central processing unit, an operation unit, a storage medium unit, a secondary battery unit and a connector connected to the main unit. A navigation device having an operation device connectable via the first processing unit, wherein the central processing unit determines whether or not the vehicle has reached the destination; Download means for downloading a map of the destination from the map information supply unit to the storage medium unit, second determination means for determining whether or not the operating device has been disconnected from the main unit during the download, and second determination means Display means for displaying a message prompting the user to download the map information of the destination when it is determined that the main apparatus has been disconnected. The operation device can be easily separated electrically and mechanically by a connection connector, so that it can be easily removed from a vehicle such as an automobile, and the central processing unit is a main unit after reaching a destination. If the map information stored in the main unit cannot be completely downloaded to the storage medium before the separation of the map information from the operation device, a message prompting the user to download the map information can be displayed. This has the advantageous effect of recognizing that the download is incomplete and integrating the main unit and the operating device to complete the download.

According to the car navigation device of the present invention, the interface between the main unit including the map information supply unit and the power supply unit and the central processing unit, the operation unit, the storage media unit, the secondary battery unit, and the portable telephone is provided. A navigation device including a communication interface unit that can be connected to the main body device via a connection connector,
The central processing unit includes a parking brake determining unit that determines whether the parking brake is in a locked state or a released state, a first mode switching unit that switches a car navigation mode to a portable mode when the parking brake is determined to be in a locked state, First determining means for determining whether or not the current position can be recognized; and, when determining that the current position can be recognized, downloading a map of the current position from a predetermined site on the Internet via a map information supply unit or a communication interface unit to a storage medium unit. Downloading means, a second mode switching means for switching from the car navigation mode to the mobile mode after downloading, a second determining means for determining whether or not a map of the current position has been downloaded in the mobile mode,
Display means for displaying the current position on the downloaded map when it is determined that the map of the current position is downloaded allows the main unit and the operating device to be easily separated electrically and mechanically by a connection connector. Therefore, it is easy to remove the vehicle from a vehicle such as an automobile, and the central processing unit detects the current position from the map information supply unit or a predetermined site on the Internet at the current position where the parking brake is locked. Since the map information can be downloaded to the storage media unit, when the parking brake is locked, it is possible to obtain guidance information for walking based on the map information of the current position displayed on the separated operation device. The advantageous effect that it can be obtained is obtained.

According to the car navigation device of the eighth aspect, the interface between the main unit including the map information supply unit and the power supply unit, the central processing unit, the operation unit, the storage media unit, the secondary battery unit, and the portable telephone. A navigation device including a communication interface unit that can be connected to the main body device via a connection connector,
The central processing unit includes a parking brake determining unit that determines whether the parking brake is in a locked state or a released state, a first mode switching unit that switches a car navigation mode to a portable mode when the parking brake is determined to be in a locked state, First determining means for determining whether or not the current position can be recognized; and, when determining that the current position can be recognized, downloading a map of the current position from a predetermined site on the Internet via a map information supply unit or a communication interface unit to a storage medium unit. A second mode switching means for switching from the car navigation mode to the portable mode after the download, and an operation device which, when the parking brake determining means determines that the parking brake is in the locked state after the transition to the portable mode, switches the operating device from the main unit. The first to determine whether or not the And a third determining means for determining whether or not a time during which the operating device has not been disconnected from the main body device is longer than a predetermined time after shifting to the portable mode. Means for switching easily from the portable mode to the car navigation mode when the third determining means determines that the predetermined time or more has elapsed, so that the main device and the operating device can be easily separated electrically and mechanically by the connection connector. Can be easily removed from a vehicle such as an automobile.In addition, the central processing unit does not disconnect the operating device from the main unit even after shifting to the portable mode. When it becomes, switching from the mobile mode to the car navigation mode is performed, so even if you reach the destination, before the main unit and the operating device are separated , Advantageous effect to return to the car navigation mode can be obtained even if once the transition to mobile mode after a predetermined period of time has elapsed.

According to the car navigation device of the ninth aspect, a main unit including a map information supply unit and a power supply unit and a central processing unit, an operation unit, a storage medium unit, a secondary battery unit, and a connector connected to the main unit. A car navigation device having an operation device connectable via a control unit, wherein the central processing unit downloads map information from the map information supply unit to the storage media unit by input from the operation unit, and a main unit. When it is determined that the operation device is separated from the operation mode, the operation device includes a mode switching unit that switches from the car navigation mode to the portable mode, and a display unit that displays a current position on a map downloaded in the portable mode. The advantageous effect that the current position can be displayed on a map in a state separated from the device is obtained. .

According to a tenth aspect of the present invention, in the car navigation device according to the ninth aspect, the operation device includes a communication interface unit that is an interface with a portable telephone, and the download unit performs communication. By downloading map information from the server via the interface unit to the storage media unit,
The map information can be downloaded from a predetermined site via the communication interface unit, and the advantageous effect that the map information can be obtained without the map information supply unit is obtained.

According to the car navigation device of the eleventh aspect, the main unit including the map information supply unit and the power supply unit, the central processing unit, the operation unit, the display unit, the storage media unit, the secondary battery unit, the position positioning unit And an operating device that can be connected to the main unit via a connection connector, so that the current position can be displayed on a map even with only the operating device, so that it can be easily removed from a vehicle such as an automobile, and when walking. In this case, there is an advantageous effect that guidance information can be obtained without causing difficulty in carrying.

The car navigation device according to the twelfth aspect includes a main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a display unit, a storage medium unit, a secondary battery unit, and a position positioning unit. An operation device connectable to the main device via a connection connector, and when the main device and the operation device are connected, map information from the map information supply unit is displayed on the display unit. When the main device and the operating device are not connected, the central processing unit controls the map information from the storage media unit to be displayed on the display unit, thereby connecting the main device and the operating device. In this case, a wide map is displayed using the map information from the map information supply unit, and when not connected, display is performed using the map information from the small and lightweight storage media unit. To, at the time of vehicle travel distance is larger available extensive maps and advantageous effect is obtained that it is possible to obtain the guide information without causing difficulties in carrying during walking.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a car navigation device according to Embodiments 1, 2, and 3 of the present invention.

FIG. 2 is a functional block diagram showing a central processing unit of an operating device of the car navigation device of FIG. 1;

FIG. 3 is a flowchart showing basic processing in the central processing unit.

FIG. 4 is a flowchart showing a portable transfer process (1) in the central processing unit.

FIG. 5 is a flowchart showing a portable transfer process (2) in the central processing unit.

FIG. 6 is a flowchart showing a portable transfer process (3) in the central processing unit.

FIG. 7 is a flowchart showing a portable transfer process (4) in the central processing unit.

FIG. 8 is a block diagram showing a conventional car navigation device.

[Explanation of symbols]

 Reference Signs List 1 operation input unit 2 display unit 3 screen operation unit 4 central processing unit 5, 17 GPS unit 6 ROM 7 RAM 8 secondary battery unit 9 portable telephone 10 communication interface unit 11 external storage media unit 12 TV unit 13 FM unit 14, Reference Signs List 16 audio output unit 15a, 16a speaker 15b handset 18 power supply unit 19 map information supply media unit 20 gyro 21, 22, 23, 24 connector 25 parking brake sensor unit A1 operation device B1 main unit C1 broadcast unit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04Q 7/34 H04B 7/26 109M 7/38 H04Q 7/04 Z (72) Inventor Kazuma Banjo, Kadoma, Osaka 1006 Oaza Kadoma Matsushita Electric Industrial Co., Ltd. AA01 BB05 BB15 FF05 FF22 FF27 5K067 AA34 BB04 DD20 EE02 FF02 FF03 HH23 JJ52 JJ56

Claims (12)

[Claims] 1. A main unit including a map information supply unit and a power supply unit, and an operation unit including a central processing unit, an operation unit, a storage medium unit, and a secondary battery unit and connectable to the main unit via a connection connector. A central processing unit, wherein the central processing unit determines whether or not the destination has been reached, and a map of the destination when it is determined that the destination has been reached, from the map information supply unit. A download unit for downloading to the storage media unit; a mode switching unit for switching from the car navigation mode to the portable mode when it is determined that the main unit and the operation device are separated; and displaying the current position on the downloaded map. A car navigation device comprising a display unit. 2. The operating device includes a communication interface unit which is an interface with a portable telephone, and the download unit downloads map information from a predetermined site via the communication interface unit to the storage media unit. The car navigation device according to claim 1, wherein: 3. A main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery unit,
A car navigation device having an operation device including a GPS unit and connectable to the main device via a connection connector, comprising: a GPS antenna fixedly connected to the operation device. apparatus. 4. A main unit including a map information supply unit, a power supply unit, and a GPS antenna, and a central processing unit, an operation unit, a storage media unit, a secondary battery unit, a GPS unit, a GPS antenna, and a connector connected to the main unit. A car navigation device having an operation device connectable via the main body device, wherein the GPS antenna of the main device is detachably connected to the main device, and the GPS antenna of the operation device is fixed to the operation device. A car navigation device, which is connected. 5. A main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery unit,
An operation device including a communication interface unit serving as an interface with a mobile phone and having an operation device connectable to the main unit via a connection connector, wherein the central processing unit determines whether or not a destination has been reached. A first judging means for judging whether or not a destination has been reached, and a map of the destination is downloaded from a predetermined site on the Internet via the map information supply section or the communication interface section to the storage media section when it is judged that the destination has been reached. Download means, mode switching means for switching from the car navigation mode to the portable mode after the download, second determining means for determining whether or not the operating device is disconnected from the main unit in the portable mode, and the operating device Is not disconnected from the main unit when the portable mode is set A second determining means for determining whether or not a predetermined time has elapsed after the shift, and wherein the mode switching means has a portable mode when the second determining means determines that the predetermined time has been exceeded. A car navigation device characterized by switching from a navigation mode to a car navigation mode. 6. A main unit including a map information supply unit and a power supply unit and an operation unit including a central processing unit, an operation unit, a storage medium unit, and a secondary battery unit and connectable to the main unit via a connection connector. A central processing unit comprising: a first determination unit for determining whether or not a destination has been reached; and a map of the destination when determining that the destination has been reached. A download unit for downloading from the unit to the storage medium unit, a second determination unit for determining whether or not the operation device is disconnected from the main unit in the middle of the download, and a disconnection unit for the second determination unit. Display means for displaying a message prompting download of map information of the destination when it is determined that . 7. A main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery unit,
An operation device including a communication interface unit serving as an interface with a mobile phone and having an operation device connectable to the main unit via a connection connector, wherein the central processing unit is configured to lock or release a parking brake. Parking brake determining means for determining whether the vehicle is in the locked state, first mode switching means for switching the car navigation mode to the portable mode when the locked state is determined, and first mode for determining whether the current position can be recognized. Determining means, when it is determined that the current position can be recognized, download means for downloading a map of the current position from a predetermined site on the Internet via the map information supply unit or the communication interface unit to the storage media unit, and after the download, Switch from car navigation mode to mobile mode Second mode switching means, second determination means for determining whether or not the map of the current position has been downloaded in the portable mode, and when it is determined that the map of the current position has been downloaded, the map is displayed on the downloaded map. Display means for displaying a current position. 8. A main unit including a map information supply unit and a power supply unit, a central processing unit, an operation unit, a storage media unit, a secondary battery unit,
An operation device including a communication interface unit that is an interface with a mobile phone and having an operation device connectable to the main device via a connection connector, wherein the central processing unit is configured to lock or release a parking brake. Parking brake determining means for determining whether the vehicle is in the locked state, first mode switching means for switching the car navigation mode to the portable mode when the locked state is determined, and first mode for determining whether the current position can be recognized. Determining means, when it is determined that the current position can be recognized, download means for downloading a map of the current position from a predetermined site on the Internet via the map information supply unit or the communication interface unit to the storage media unit, and after the download, Switch from car navigation mode to mobile mode When the second mode switching means and the parking brake determination means determine that the parking brake is in a locked state after shifting to the portable mode, determine whether the operating device is disconnected from the main device. A second determination unit, and a third determination unit that determines whether a time during which the operation device has not been disconnected from the main device has reached a predetermined time or more after shifting to the portable mode, The third mode switching means switches the mode from the portable mode to the car navigation mode when the third determining means determines that the time is equal to or longer than a predetermined time. 9. A main unit including a map information supply unit and a power supply unit, and an operation unit including a central processing unit, an operation unit, a storage medium unit, and a secondary battery unit and connectable to the main unit via a connection connector. A central processing unit, wherein the central processing unit includes: a download unit that downloads map information from the map information supply unit to the storage media unit based on an input from the operation unit; and the main unit and the operation device A car navigation device comprising: a mode switching unit that switches from a car navigation mode to a mobile mode when it is determined that the mobile device is separated from the vehicle; and a display unit that displays a current position on a map downloaded in the mobile mode. 10. The operating device includes a communication interface unit that is an interface with a portable telephone, and the download unit downloads map information from a predetermined site to the storage media unit via the communication interface unit. The car navigation device according to claim 9, wherein: 11. A main unit including a map information supply unit and a power supply unit and a central processing unit, an operation unit, a display unit, a storage medium unit, a secondary battery unit, and a position positioning unit via a connection connector to the main unit. A car navigation device comprising a connectable operation device. 12. A main unit including a map information supply unit and a power supply unit, and a central processing unit, an operation unit, a display unit, a storage medium unit, a secondary battery unit, and a position positioning unit. Having a connectable operating device, when the main device and the operating device are connected, the map information from the map information supply unit is displayed on the display unit, and the main device and the operating device are The car navigation device controls the central processing unit to display the map information from the storage media unit on the display unit when not connected.