JP2005147946A - Car navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use a car navigation system for a use other than an automobile, for example, for walking of a person, as a device for supporting a moving condition, although the car navigation system is assumed to be used under a riding condition on the automobile. <P>SOLUTION: In this car navigation system, a cellular phone having a GPS function is connected to the car navigation system to acquire positional information and a map data about a destination into the cellular phone, and navigation is able to receive continuously based on the information from the cellular phone, even when moving by walk from a point getting off out of the automobile to the destination. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  By linking a car navigation device (hereinafter referred to as a car navigation device) and a mobile phone having a GPS function (hereinafter referred to as a mobile phone), the user is continuously guided to the destination after getting off the vehicle. It relates to a system that makes it possible to do.

A car navigation device is a device that is installed in an automobile and supports driving of a driver by displaying a destination and a current position together with map information while traveling, and is generally widely used. A user on the car inputs information such as various setting values and screen display characters on the attached screen from the operation input unit, and sets a moving destination. A list of telephone numbers of communication partners, various user setting values, external input that captures external input information such as Internet websites, etc., and a car navigation device generally amplifies an audio signal and outputs it to a speaker, It consists of an antenna that acquires position information indicating the current position, a large-capacity storage medium such as a DVD or CD-ROM that records and holds map information that has a large amount of information and is difficult to receive sequentially, and a reading device thereof. , Provide images, sounds, etc. to users according to driving conditions.
JP 2002-303528 A

  Conventionally, a car navigation device is assumed to be used in a car as described above. However, it is more convenient if it can be used for a purpose other than a car, for example, when a person is walking, as a device that supports the situation of movement. It is.

  In order to solve such a problem, there is already a car navigation device of a type in which a car navigation device main body is detachably provided from a car and removed from the inside of the car when getting off, and in such a device, the device main body is used as a car. There is a problem that it is difficult to carry for a long time from the viewpoint of weight, and that the removal of the apparatus is complicated and the usability is very poor.

  In addition, in such a car navigation device, the user usually inputs a destination to the car navigation device in advance, selects a route from the location information acquired by GPS to the destination, listens to the guidance during operation, and obtains the operation information. However, navigation is not considered at all when getting off the car and moving to the destination by walking or using other moving means such as bicycle, and it is not possible to continue using it after getting off the car. It was possible.

  In order to solve the above-described problems, the car navigation device of the present invention includes a main body device including a map information recording unit, a central processing unit, and a receiving unit that receives position information from outside the device, and displays the position information. In the car navigation device having the storage unit, the mobile phone having the storage unit has connection means to which the mobile phone can be connected, and the mobile phone having the storage unit has connection means to which the mobile phone can be connected. The data is transmitted to a mobile phone and stored in the storage unit. Thereby, even if it gets off from vehicles, such as a car, guidance information can be obtained continuously, and even if it goes to the destination on foot etc., navigation can be received without a sense of incongruity.

  According to the car navigation device of the present invention, the location information of the destination and the map data are inherited from the car navigation device to the mobile phone and can be displayed at any time, so that the map can be viewed even when getting off. Therefore, it is possible to arrive at the destination without hesitation after getting off. Further, since the mobile phone is used, it is not necessary to remove a large device from the vehicle and carry it, reducing the burden on the user and improving convenience.

  FIG. 1 shows a block diagram of the first embodiment of the present invention. The function of each part below is shown. A shows the car navigation device main body, and B shows the mobile phone main body. Among the configurations described below, reference numerals 1 to 11 are provided in the car navigation apparatus main body A. Reference numerals 12 to 18 are provided in the mobile phone main body B. Reference numeral 1 denotes a GPS receiver that receives position information acquired by a GPS antenna 9 described later. Reference numeral 2 denotes a display unit constituted by a small LCD or the like, which displays the map data acquired by the map information acquisition unit 4 described later on the screen. Reference numeral 3 denotes an operation unit, which is an interface through which the user performs operations such as input of destinations and settings. A map information acquisition unit 4 acquires digital map data. Reference numeral 5 denotes a CPU (central processing unit) that performs data calculation and selects a route.

  Reference numeral 6 denotes a RAM unit which stores data. Reference numeral 7 denotes a power supply unit that supplies power to each part of the car navigation system. A parking lot information receiving unit 8 receives the parking lot information acquired by the parking lot information acquisition antenna 11. Reference numeral 9 denotes a voice output unit, which is an output unit for guiding the route by voice. Reference numeral 10 denotes a GPS antenna. Reference numeral 11 denotes an antenna for acquiring parking lot information, which is an antenna for acquiring parking lot information. Reference numeral 12 denotes a mobile phone GPS receiver that receives position information acquired by the GPS antenna 17. A mobile phone display unit 13 is an interface for displaying a map or the like. Reference numeral 14 denotes a mobile phone operation unit, which is an interface for the user to perform operations such as input of destinations and settings. Reference numeral 15 denotes a mobile phone CPU (central processing unit) that performs data calculations. Reference numeral 16 denotes a mobile phone RAM unit which stores data. Reference numeral 17 denotes a mobile phone power supply, which supplies power to each part of the GPS mobile phone. A mobile phone GPS antenna 18 is an antenna for acquiring position information from the GPS. Reference numeral 19 denotes a car navigation connection terminal, which is an interface for exchanging data with a GPS mobile phone. Reference numeral 20 denotes a GPS mobile phone connection terminal, which is an interface for exchanging data with the car navigation apparatus. Reference numeral 21 denotes a connection cable, which is a dedicated cable for connecting the car navigation apparatus and the GPS mobile phone.

  Next, the operation of the car navigation apparatus having the above configuration will be described below. FIG. 2 is a flowchart showing each step of the operation. Hereinafter, description will be made with reference to FIG. In the following description, as an example of use of the present invention, after the user first moves to the nearest parking lot by car to the destination, the user gets off at the parking lot and walks the remaining distance to the destination on foot. The case is described.

  First, after the car navigation device is activated, the user who gets on the vehicle first inputs the position of the destination to the car navigation device A (S1). At this time, a map around the local point is displayed on the display unit 2. The operation unit 3 is operated while viewing the screen display of the user. In the present invention, a small LCD is used for the display screen, and a handheld operation terminal is used for the operation unit. This method is an input method generally used in the field of car navigation. Since this input method is not directly related to the claimed invention, its description is omitted.

  However, it is also possible to use other input methods, for example, an input method using a pen input, or an input method in which information input to a mobile phone is transferred to the car navigation device body and position information is displayed on the LCD. Needless to say.

  The data input in this way is readable and temporarily recorded in the RAM 6 (S2). The set destination is displayed again on the display unit 2 and it is confirmed whether or not the user has set the position correctly by visual observation.

  Next, the nearest parking lot information is acquired based on the coordinate information of the destination stored in the RAM 6 (S3). The location information of the parking lot emitted from the center is received by the parking lot information acquisition antenna 10 and the parking lot information receiving unit and sequentially written in the RAM 6. The route data is calculated by the CPU 5 by comparing the coordinate data of the destination already recorded with the coordinate data of the parking lot (S4). As a result of the route calculation, coordinate data of one or a plurality of parking lots is selected, and by this configuration, coordinate data of parking lots around the destination is extracted, and the coordinate data is assumed to be a parking lot suitable for parking. The data is written to the RAM 6 again.

  In this way, after the information on the destination and the parking lot in the vicinity thereof is recorded, the user starts driving the car, and after driving a predetermined distance, the car navigation device A message is output to inform the user that the destination is being reached by voice. At this time, the presence of a nearby parking lot may be notified. When the user arrives at the designated parking lot according to this guidance, the user gets off the vehicle. At that time, the cellular phone B possessed by the user is connected to the car navigation device by the connection cable 21 (S5), and the purpose stored in the RAM unit 6 is stored. The coordinate data of the ground and the map data of the position stored in advance in the map information acquisition unit 4 are called and stored in the RAM unit 16 of the mobile phone. (S6) At this time, as the data to be taken into the mobile phone, the destination location information, current location information, map data around the current location, map data around the destination, route data to the destination, store information and various types Information about the service can be considered.

  As a result, the map data stored in the RAM 16 can be read out as necessary and displayed on the screen of the mobile phone. Then, a map around the destination, a map around the current location, and a route to the destination stored in the RAM 16 are displayed on the display unit (S7). The map information displayed on the screen of the mobile phone is sufficient to display at least the map around the destination in order to satisfy the minimum function of the present application, but the storage capacity of the RAM portion of the mobile phone is sufficient. It is good also as a structure which expands as needed and can preserve | save the arbitrary maps which are not limited to the periphery of a destination. In this case, the user can continue to navigate by scrolling the display of the map on the mobile screen when moving to another destination after getting off the vehicle.

  After displaying an appropriate map on the display unit of the mobile phone, the current location information from the GPS antenna 18 of the mobile phone B and the GPS receiving unit 12 is acquired, and the current map is displayed on the surrounding map displayed on the display unit 13 Show. The position information is updated as needed and reflected on the display unit 13 (S8).

  The user looks at the display unit 13 of the mobile phone B and heads for the destination (S9). At this time, store information that is not directly related to navigation and information related to various services are also taken into the mobile phone and displayed on the screen, thereby further improving convenience. Also, the parking lot information from the information center is added to the parking lot availability information and transmitted, and when the transmission / reception means 45 receives and displays the display means 46, it immediately heads to the empty parking lot. Can do.

  In the above description, the case where a parking lot is used has been described. However, the place where the automobile is stopped is not limited to the parking lot, and may include various store names and various recreational facilities.

  The configuration of the second embodiment of the present invention is the same as the method of using the car navigation apparatus described in the first embodiment. When the user arrives at the destination by foot, finishes his private duties, and returns to the parking lot, he returns to the parking lot again. This is for the case of boarding. At this time, for the section moved on foot, the acquired store information and information on the travel route are uploaded to the car navigation device, and the recorded data on the car navigation device side is updated and reflected. The apparatus configuration of the second embodiment is the same as the configuration of the first embodiment already described, and therefore the description thereof is omitted here.

  Next, the operation of the car navigation system according to the second embodiment will be described below. FIG. 3 is a flowchart showing each step of the operation. Hereinafter, description will be made with reference to FIG. In the following description, as described in Example 1 as an example of use of the present invention, after the user first travels by car to the nearest parking lot at the destination, he gets off at the parking lot and reaches the destination. In the case of moving the rest of the journey on foot, the usage method when returning to the parking lot after a certain walk action is described.

  The user is guided to the destination set based on the instruction displayed on the screen of the mobile phone and continues walking (S21). Thereafter, when the user reaches the destination, the user is notified of the arrival at the destination by display on the screen of the mobile phone or by voice (S22).

  In general, when a user finishes his work at the destination, the user may be driven by a desire to do another job, or spend more time around the destination. In such a case, he immediately returns to the parking lot. That is not always the case. Therefore, in this embodiment, the user's movement data is continuously acquired even after arrival at the destination. (S23) The moved footprint is displayed continuously with the display when moving from the parking lot to the destination (S24).

A user walks freely and performs various actions (for example, shopping). Meanwhile, the mobile phone sequentially receives nearby store information and displays it on the screen (S25).
The user wants to finish the action on foot and get on the car at some point, but the point at that time is called the final point here. The position of the final point is separated from the destination position by the amount of movement on a predetermined walk and away from the parking lot. In addition, the position of the final point may be closer or farther to the parking lot than the distance between the destination and the parking lot. Therefore, in this embodiment, the route calculation is performed based on the position information of the parking lot already recorded in the ROM 6 and the position of the final point.

The coordinate data of the parking lot already recorded and the coordinate data of the final point are compared, and the route calculation is performed by the CPU 5 (S26). As a result of the route calculation, the shortest route data is selected and the route is displayed on the screen (S27).
Based on this display, the user can grasp the route to return from the final point to the parking lot, and can easily return to the parking lot. (S28)

  When the user arrives at the parking lot, after getting on, the user activates the main body of the car navigation system installed in the car. At this time, information on each route from the parking lot to the destination, from the destination to the final point, and from the final point to the parking lot is not reflected in the main body at all. Therefore, the user connects the mobile phone to the car navigation system again in the same manner as when getting off (S29). Then, associated information such as route data and store information while moving on foot is uploaded from the mobile phone to the car navigation device (S30). On the screen of the car navigation device main body, the uploaded travel route on foot is displayed so as to be continuous with the travel route already recorded.

  At this time. It is good also as a display which distinguishes clearly the color of the line of the movement path on foot from the movement path by car as a different color. In addition, when you move on foot, you can display the acquired store information again on the screen of the car navigation system, so that you can revisit the store you knew when you walked by car, improving convenience. The car navigation device can be made.

By implementing the configuration of the present application, the cooperation between the car navigation system and the mobile phone is facilitated. Therefore, various services using the mobile phone can be used in a system that provides advanced location information that links the location information.

It is a block diagram of the present invention. It is an operation | movement flow of Example 1 of this invention. It is an operation | movement flow of Example 2 of this invention.

Explanation of symbols

A Car navigation device B GPS mobile phone 1 GPS receiver
6 RAM unit 8 Map information acquisition unit
12 GPS receiver

Claims (3)

A main unit including a map information recording unit, a central processing unit, and a receiving unit that receives position information from outside the device,
In a car navigation device including a display unit that displays the position information,
The mobile phone having a storage unit has connection means to which the mobile phone can be connected, and transmits the location information stored in the main device to the mobile phone,
A car navigation device stored in the storage unit. The car navigation device according to claim 1, wherein the stop position and the coordinate information of the destination and the route data between the stop position and the destination input to the main body device are recorded in the storage unit. The car navigation device according to claim 1, wherein the stop position is determined based on position information of the destination.