JP2011149778A - Navigation system, navigation method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To notify a guide suited to a navigation mode. <P>SOLUTION: The navigation system 10 includes an acquisition section acquiring position information; a discrimination section 116 discriminating a navigation mode; a detection section 140 detecting a guidance point; and a performance section performing a navigation to the guidance point in the navigation mode discriminated by the discrimination section. The performance section make a notice, depending on the navigation mode, when it passes through the guidance point. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a navigation device, a navigation method, and a program.

  2. Description of the Related Art Conventionally, a navigation device is mounted on a moving car or the like, and a user's current position, a route to a destination, and the like are presented to the user. In addition to text information and voice information, notification information is also notified to the user using a vibration that vibrates the housing. For example, in Patent Literature 1, ringing tone on / off and vibration on / off are changed according to the location of the user. In addition, it is determined whether the vehicle is walking or walking from the moving speed, and the guidance notification method is changed depending on whether the vehicle mode or the walking mode.

JP 2008-206017 A

However, the navigation device is not only used in the car or when walking, but also used when riding a bicycle or motorcycle. It is desired to provide guidance suitable for each navigation mode. Furthermore, it has been desired to provide notifications suitable for the navigation mode for notifications such as intersections that pass to the destination.
Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a new and improved navigation apparatus and navigation method capable of providing guidance notification suitable for the navigation mode. And to provide a program.

  In order to solve the above problems, according to an aspect of the present invention, an acquisition unit that acquires position information, a determination unit that determines a navigation mode, a detection unit that detects a guide point, and the position information are used. An execution unit that executes navigation to the guide point in the navigation mode determined by the determination unit, and the execution unit notifies the navigation mode when passing through the guide point. A navigation device is provided.

  The detection unit may detect an intersection on a route to a destination as the guide point, and the execution unit may make a notification according to the navigation mode before passing through the guide point.

  In addition, the execution unit may change the notification method of the guide point for each navigation mode.

  Moreover, you may provide the memory | storage part which linked | related and memorize | stored the said navigation mode and the notification information which shows the notification method of the said guidance point.

  The execution unit may change a notification time point at which the guide point is notified according to the navigation mode.

  The navigation mode may include a car mode, a motorcycle mode, a bicycle mode, and a walking mode.

  Further, when the determination unit determines that the navigation mode is the walking mode, the execution unit may notify the user by vibrating the housing before passing through the guide point.

  In addition, when the determination unit determines that the navigation mode is the vehicle mode, the execution unit may output and notify the user before passing the guide point.

  Further, when the determination unit determines that the navigation mode is the bicycle mode, the execution unit may output and notify the light source before passing through the guide point.

  In order to solve the above problem, according to another aspect of the present invention, a computer includes an acquisition unit that acquires position information, a determination unit that determines a navigation mode, a detection unit that detects a guide point, An execution unit that executes navigation to the guide point in the navigation mode determined by the determination unit using the position information, and the execution unit passes the guide point when the navigation mode is used. A program for functioning as a navigation device is provided.

  In order to solve the above problem, according to another aspect of the present invention, using the position information, a step of acquiring position information, a step of determining a navigation mode, a step of detecting a guide point, and Performing navigation to the guidance point in the navigation mode determined by the determination unit, and notifying according to the navigation mode when passing through the guidance point. The

  As described above, according to the present invention, guidance notification suitable for the navigation mode can be performed.

It is explanatory drawing explaining the outline | summary of embodiment of this invention. 1 is an external view of a PND according to a first embodiment. It is a block diagram which shows the function structure of PND concerning the embodiment. It is explanatory drawing explaining the selection operation of the navigation mode concerning the embodiment. It is explanatory drawing explaining the selection operation of the navigation mode concerning the embodiment. It is explanatory drawing explaining the guidance notification corresponding to each navigation concerning the embodiment. It is explanatory drawing which showed the coordinate system around PND concerning the embodiment. It is a flowchart which shows the detail of operation | movement of PND concerning the embodiment. It is an external view of the mobile phone concerning 2nd Embodiment. FIG. 3 is a block diagram showing a functional configuration of the mobile phone according to the embodiment.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

Further, the “best mode for carrying out the invention” will be described in the following order.
<1. Purpose of this embodiment>
<2. Overview of this embodiment>
<3. First Embodiment>
<3-1. PND hardware configuration>
<3-2. Functional configuration of PND>
<3-3. Details of PND operation>
<4. Second Embodiment>

<1. Purpose of this embodiment>
First, the purpose of this embodiment will be described. 2. Description of the Related Art Conventionally, a navigation device is mounted on a moving car or the like, and a user's current position, a route to a destination, and the like are presented to the user. In addition to text information and voice information, notification information is also notified to the user using a vibration that vibrates the housing. For example, a technique for changing on / off of a ring tone and on / off of vibration according to a location where a user is located is disclosed. Also disclosed is a technique for determining whether the vehicle is walking or walking from the moving speed, and changing the guidance notification method depending on whether the vehicle mode or walking mode.

  However, the navigation device is not only used in the car or when walking, but also used when riding a bicycle or motorcycle. It is desired to provide guidance suitable for each navigation mode. Furthermore, it has been desired to provide notifications suitable for the navigation mode for notifications such as intersections that pass to the destination. Accordingly, the navigation apparatus according to the embodiment of the present invention has been created with the above circumstances as a focus. According to the navigation device of the present embodiment, guidance notification suitable for the navigation mode can be performed.

<2. Overview of this embodiment>
The purpose of this embodiment has been described above. Next, an outline of the present embodiment will be described with reference to FIG. FIG. 1 is an explanatory diagram for explaining the outline of the present embodiment. As described above, the navigation device according to the present embodiment performs navigation in each mode such as the car mode, the bicycle mode, and the walking mode. These modes are also referred to as navigation modes below. The navigation executed by the navigation device according to the present embodiment means presenting the user's current position and the route to the destination to the user. Specifically, the current position is calculated based on a GPS signal transmitted from a GPS (Global Positioning System) satellite, and the position and traveling direction of the user are indicated on the map screen.

  As shown in FIG. 1, the navigation apparatus according to the present embodiment changes the map display or changes the mark of the current position according to each navigation mode. For example, a display example 361 is a display example when navigating in the car mode, and navigation is performed by displaying a wide range map. A display example 362 is a display example when navigating in the bicycle mode, and navigation is performed by displaying a map in a narrower range than in the car mode. Furthermore, the display example 363 is a display example when navigation is performed in the walking mode, and navigation is performed by displaying a map in a narrower range than the walking mode.

  In the car mode, the current position is displayed with a triangle. In the bicycle mode, the current position is displayed with a bicycle mark. In the walking mode, the current position is displayed with a person mark. Although FIG. 1 shows a display example when navigation is executed in the car mode, the bicycle mode, and the walking mode, the present invention is not limited to such an example, and is applied to other navigation modes such as a motorcycle mode and a jogging mode. It is possible. The user can select a desired navigation mode from a plurality of navigation modes by pressing a navigation mode switching button or the like of the navigation device.

  In the navigation device according to the present embodiment, guidance notification suitable for navigation can be performed. The guidance notification is notification of a guidance point such as an intersection passing through to the destination. In addition, guidance notification suitable for the navigation mode is notification by changing the guidance method according to each navigation mode such as the bicycle mode or the walking mode.

  For example, when guiding an intersection or the like in the bicycle mode, it is preferable to notify by an alarm instead of a voice guide. This is because it is dangerous and often difficult to drive while viewing the display screen of the navigation device when riding a bicycle. When notifying an intersection or the like with an alarm, the right or left turn or the degree of approach to the intersection may be indicated by the type and number of alarm sounds (beep sounds). Further, after notifying the approach of the intersection by an alarm sound, the user may be allowed to confirm the display screen of the navigation device.

  In addition, when the navigation device is mounted on a bicycle, notification by vibration is not preferable because the user often does not notice.

  Further, when notifying that an intersection is approaching, notification is made at a position relatively close to the intersection. Moreover, you may make it notify that it approached the intersection according to the speed of a bicycle, or the approach degree to an intersection.

  Further, for example, when guiding an intersection or the like in the walking mode, it is preferable to notify by vibration or the like instead of voice guidance. This is because in the case of walking or jogging, since the navigation device is often stored in a pocket or the like, it is considered that it is not likely to walk while viewing the display screen of the navigation device.

  Further, when notifying that an intersection is approaching, notification is made at a position relatively close to the intersection. Moreover, after notifying the approach of an intersection by vibration etc., you may make it make a user confirm the display screen of a navigation apparatus.

  In addition, when guiding an intersection or the like in the car mode, notification is given by voice guidance. For example, when an intersection approaches, the direction of a left or right turn or the distance to the intersection is specifically notified by voice.

  Further, when notifying the approach of the intersection, the guidance notification is performed according to the distance between the user's position and the intersection. In the case of the car mode, the guidance notification is performed at a distance assuming the speed of the car. As described above, in the bicycle mode or the walking mode, the guidance is notified at a distance assuming the speed of each mode. For example, since the moving speed of a bicycle is slower than that of a car, the bicycle mode is notified at a timing later than the timing of notifying guidance in the vehicle mode. Further, in the walking mode, the notification is made at a timing later than the timing of notifying the guidance in the bicycle mode. By storing the setting of these notification methods in association with each navigation mode in advance, it is possible to realize a guidance notification according to each navigation mode.

<3. First Embodiment>
The overview of the navigation device has been described above. Next, a navigation device according to the first embodiment will be described with reference to FIGS. In the present embodiment, the navigation apparatus will be described as applied to a PND (Personal Navigation Device) 10 shown in FIG.

<3-1. PND hardware configuration>
As shown in FIG. 2, the PND 10 is provided with a display unit 12 on the front surface of the apparatus. The PND 10 displays a real image or the like corresponding to map data stored in a built-in nonvolatile memory (not shown) on the display unit 12 and performs navigation. The PND 10 may include a cradle 14 and a suction cup 16. The cradle 14 and the suction cup 16 are necessary for mounting on the dashboard of the vehicle when the PND 10 is used in the vehicle. The PND 10 is mounted on the dashboard of the vehicle via the suction cup 16 and is mechanically and electrically connected to the PND 10. The PND 10 can operate based on electric power supplied from the vehicle via the cradle 14.

  When the user uses the PND 10 when walking, the configuration of the cradle 14 and the suction cup 16 may not be provided. When the user uses the PND 10 when walking, the user moves only with the PND 10 main body. Further, when the user uses the PND 10 when traveling on a bicycle, the user may move by holding only the main body of the PND 10 as in the case of walking, or by attaching the cradle 14 and the suction cup 16 to a bicycle handle or the like. You may move.

  As described above, a desired navigation mode is selected from a plurality of navigation modes by pressing a navigation mode switching button (not shown) of the PND 10. For example, when the PND 10 is used by a car, the car mode is selected, the bicycle mode is selected when the PND 10 is used by a bike, and the walking mode is selected and operated when the PND 10 is used by foot.

  When a navigation mode desired by the user is selected by a user operation, the PND 10 performs navigation in the selected navigation mode. Since the PND 10 has a function of acquiring the current position, the PND 10 displays a map including the current position on the display unit 12 and performs navigation by superimposing the user's current position and traveling direction on the displayed map. .

  Further, the PND 10 has a function of performing guidance notification suitable for each navigation mode. That is, the PND 10 can change the notification method such as voice guidance or vibration according to each navigation mode and can guide that the vehicle has approached an intersection or the like.

<3-2. Functional configuration of PND>
The hardware configuration of the PND 10 has been described above. Next, the functional configuration of the PND 10 will be described with reference to FIG. As shown in FIG. 3, the PND 10 includes a display unit 12, an operation unit 104, a storage unit 108, a navigation function unit 110, and the like.

  The operation unit 104 detects a user operation and outputs the detected operation content to the navigation function unit 110. Examples of user operations include navigation mode selection, destination setting, map enlargement / reduction, current location display, voice guidance setting, and screen display setting.

  The operation unit 104 may be a touch panel or a touch screen provided integrally with the display unit 12. The operation unit 104 may have a physical configuration provided separately from the display unit 12 such as a button, a switch, a lever, and a dial. The operation unit 104 may be a signal receiving unit that detects a signal indicating a user operation transmitted from the remote controller.

  Here, the navigation mode selection operation by the user will be described with reference to FIGS. 4 and 5 are explanatory diagrams for explaining the navigation mode selection operation. 4 and 5, a case where the operation unit 104 is a touch panel provided integrally with the display unit 12 will be described.

  As shown in FIG. 4, a “setting” tab is selected by a user operation from the display items on the menu screen 341 displayed on the touch panel. When the “setting” tab is displayed, an editing / setting display screen 342 is displayed. When the “mode switching” button is touched by the user, a navigation mode switching screen 343 capable of switching the navigation mode is displayed. The user touches any mode button from “car navigation” (vehicle mode), “bicycle navigation” (bicycle mode), and “walking navigation” (walking mode) displayed on the navigation mode switching screen 343. Select the desired navigation mode.

  Further, as shown in FIG. 5, when navigation is being performed, an operation of switching the navigation mode being performed to another navigation mode may be performed. As shown in FIG. 5, when navigation is being executed in the car mode, the “navigation” toolbar displayed on the map screen 331 in the car mode is selected. When the “navi” toolbar is selected, a guide / point screen 332 is displayed.

  The user touches the “mode switching” button displayed on the guide / point screen 332. When the “mode switching” button on the guide / point screen 332 is touched, a navigation mode switching screen 333 is displayed. The user touches any mode button from “car navigation” (vehicle mode), “bicycle navigation” (bicycle mode), and “walking navigation” (walking mode) displayed on the navigation mode switching screen 343. Select the desired navigation mode.

  Returning to FIG. 3, the description of the functional configuration of the PND 10 will be continued. The storage unit 108 stores a program for operating the PND 10, setting information for each navigation mode, and the like. Examples of the setting information for each navigation mode include various setting information such as a guidance notification method corresponding to the navigation mode, map data, volume data, and screen brightness data.

  The storage unit 108 may be a storage medium such as a non-volatile memory, a magnetic disk, an optical disk, and an MO (Magneto Optical) disk. Examples of the nonvolatile memory include an EEPROM (Electrically Erasable Programmable Read-Only Memory) and an EPROM (Erasable Programmable ROM). Examples of the magnetic disk include a hard disk and a disk type magnetic disk. Examples of the optical disk include a CD (Compact Disc), a DVD-R (Digital Versatile Disc Recordable), and a BD (Blu-Ray Disc (registered trademark)).

  The navigation function unit 110 is a configuration for realizing a navigation function, and includes a GPS antenna 112, a GPS processing unit 114, a determination unit 116, a navigation unit 118, a triaxial acceleration sensor 120, and a Y axis gyro sensor 122. A velocity calculation unit 124, a Z-axis gyro sensor 130, an angle calculation unit 132, a detection unit 140, a position acquisition unit 142, an atmospheric pressure sensor 150, and an altitude calculation unit 152.

  Among these, the GPS processing unit 114, the determination unit 116, the navigation unit 118, the angle calculation unit 132, the position acquisition unit 142, the detection unit 140, the altitude calculation unit 152, and the like are configured by, for example, a CPU (Central Processing Unit).

  The GPS antenna 112 receives a GPS signal transmitted from an artificial satellite turning around the earth, and supplies the received GPS signal to the GPS processing unit 114. The GPS signal includes information such as orbit information indicating the orbit of the artificial satellite and signal transmission time.

  The GPS processing unit 114 calculates the position of each artificial satellite from the orbit information included in each GPS signal. Then, the GPS processing unit 114 calculates the current three-dimensional position by simultaneous equations based on the position of each artificial satellite and the difference between the transmission time and the reception time of the GPS signal.

  The determination unit 116 has a function of determining the navigation mode. As described above, the navigation mode is selected by the user via the operation unit 104. The determination unit 116 determines which navigation mode has been selected by the user via the operation unit 104. The determination unit 116 provides the navigation unit 118 with information on the determined navigation mode.

  In the above, the navigation mode is selected according to the user operation. However, the navigation mode is not limited to this example, and the navigation mode is switched by detecting vibration, or the electrical contact with the attached cradle is detected. Then, an appropriate navigation mode may be automatically selected.

  The navigation unit 118 performs navigation in the navigation mode determined by the determination unit 116 based on the current position acquired by the position acquisition unit 142 described later. The navigation unit 118 is an example of the execution unit of the present invention. For example, the navigation unit 118 reads the map data corresponding to the navigation mode from the storage unit 108 and superimposes the current position mark on the map image including the current position. As described above, the storage unit 108 stores setting information corresponding to the navigation mode. The navigation unit 118 acquires setting information corresponding to the navigation mode determined by the determination unit 116 from the storage unit 108, and executes navigation using the setting information.

  Examples of the setting information for each navigation mode include various setting information such as a guidance notification method corresponding to the navigation mode, map data, volume data, and screen brightness data. Here, with reference to FIG. 6, the guidance notification corresponding to each navigation included in the setting information will be described. FIG. 6 is an explanatory diagram for explaining the guidance notification corresponding to each navigation.

  As shown in FIG. 6, in the setting information 400, guidance notification methods corresponding to navigation in the car mode, the bicycle mode, and the walking mode are set. When the navigation mode is the car mode, the navigation unit 118 performs guidance notification by voice guidance. In the case of the vehicle mode, the approach notification is a specific notification of a direction such as a right or left turn or a distance to the intersection by voice when approaching a guide point such as an intersection.

  When notifying the approach of the intersection, the guidance notification is performed according to the distance between the user's position and the intersection. When the navigation mode is the car mode, the intersection guidance is notified at a distance assuming the speed of the car. In the case of the car mode, since navigation is performed by voice guidance, it is set so that navigation by alarm or vibration notification is not performed.

  When the navigation mode is the bicycle mode, a guidance notification is given by an alarm or light. When riding a bicycle, it is dangerous and difficult to drive while viewing the display screen of the navigation device, so an alarm sound (beep sound) is notified. Further, guidance notification may be performed by turning on light with high illuminance. Even if the display screen cannot be viewed while driving the bicycle, the user can notice that there is some notification because light enters the field of view. Thereby, even if it is set not to perform voice notification or alarm notification, the same effect as the alarm notification can be obtained by lighting the light.

  As for the approach notification, an intersection guide notification is performed at a distance assuming the speed of the bicycle. In other words, since the moving speed of the bicycle is slower than that of the car, in the bicycle mode, notification is made at a timing later than the timing of notifying the guidance in the car mode.

  As for power saving, when no operation is performed for a certain period of time, the display screen is darkened to enter the power saving mode. Then, the screen is displayed when a display screen or a button is touched. Further, the screen may be displayed when approaching a guide point such as an intersection. Then, after the guidance notification is completed, the screen may be darkened to reenter the power saving mode. In the bicycle mode, since it is rare to drive while visually recognizing the display screen, it is possible to suppress power consumption by setting the power saving mode.

  When the navigation mode is the walking mode, a guidance notification is performed by vibration. In the case of walking or jogging, the navigation device 10 is often stored in a pocket or the like, and it is difficult to think of walking while always checking the display screen by holding it in hand, so notification by vibration is performed. In the walking mode, guidance by voice guidance is inconvenient because it can be heard by people around the user, so guidance by voice guidance is not performed.

  As for the approach notification, the intersection guide notification is performed at a distance assuming the speed of walking or jogging. That is, since walking and jogging have a slower moving speed than a bicycle, in the walking mode, notification is made at a timing later than the timing of notifying guidance in the bicycle mode. As a result, guidance notifications such as intersections are performed when there is a distance from the intersection, and the guidance notification is not made after the intersection is missed. The guidance notification is performed at an appropriate timing according to the navigation mode.

  As for power saving, as in the bicycle mode, the display screen is darkened to enter the power saving mode when no operation is performed for a certain period of time. Then, the screen is displayed when a display screen or a button is touched. Further, the screen may be displayed when approaching a guide point such as an intersection. Then, after the guidance notification is completed, the screen may be darkened to reenter the power saving mode. In the walking mode, since it is rare to walk while always viewing the display screen, it is possible to suppress power consumption by setting the power saving mode.

  The navigation unit 118 may end the guidance notification suitable for each navigation mode in response to a user operation. For example, the notification of approach to an intersection or destination is notified several times until the vehicle passes through the intersection. When the user confirms the direction of the intersection and the turn by the guidance notification, it is desirable to end the guidance notification and minimize the change of the screen. Therefore, the navigation unit 118 does not perform the guidance notification after the cancellation operation is performed when the guidance notification cancellation operation is performed by a user operation.

  The operation for canceling the guidance notification by the user operation is performed by, for example, displaying the “notification end” button together with the guidance notification on the display screen, and pressing the “notification end” button by the user operation. Execute.

  Returning to FIG. 3, the description of the navigation unit 118 is continued. When map scale information is stored as setting information, the navigation unit 118 can change the map scale according to the navigation mode based on the setting information. For example, in the car mode, the scale of the map is reduced to display a wide range of maps. In the bicycle mode, the scale of the map is made larger than the scale of the car mode to display an enlarged map. Then, a map with a larger scale than the bicycle mode may be displayed. This makes it possible to display a map in an appropriate range for each navigation mode.

  When volume information is stored as the setting information, the navigation unit 118 can change the volume according to the navigation mode based on the setting information. For example, in the case of the car mode, the sound volume can be set to an appropriate level when listening to the guidance voice in a car with almost no noise, and in the case of the bicycle mode, the sound volume can be set to a level that does not disturb the outdoors. In the case of walking, the volume is set to an appropriate level when listening to the guidance voice with the earphone. As a result, it is possible to provide a guidance voice or the like with an appropriate volume for each navigation mode.

  When screen brightness information is stored as the setting information, the navigation unit 118 can change the screen brightness according to the navigation mode based on the setting information. For example, in the case of a navigation mode that is used outdoors, such as a bicycle mode or a walking mode, the illuminance of the display is increased and set to an illuminance that is easy to see outdoors. This makes it possible to display a map or the like with an appropriate screen brightness for each navigation mode.

  Further, the number of divided screens may be set for each navigation mode as setting information. For example, in the case of the car mode, it may be set so that a wide range map and a detailed map showing a corner are displayed simultaneously. Further, a power saving mode may be set for each navigation mode as setting information. For example, in the case of the bicycle mode, the display screen may be darkened to enter the power saving mode when there is no user operation for a predetermined time. Further, a navigation search method may be set as the setting information. For example, in the case of the car mode, route information to the destination is presented except for a bicycle road. In the case of the walking mode, a road where a vehicle cannot pass, such as a narrow alley, may be presented as a shortcut.

  When the GPS antenna 112 cannot receive a GPS signal from the artificial satellite, the GPS processing unit 114 cannot calculate the current position based on the GPS signal. In such a case, the navigation unit 118 performs navigation using the current position acquired by another method. For example, the navigation unit 118 can perform navigation using the current position obtained by each sensor and each calculation unit described below.

  The triaxial acceleration sensor 120 detects the acceleration αx in the X-axis direction, the acceleration αy in the Y-axis direction, and the acceleration αz in the Z-axis direction shown in FIG. 6 at a sampling frequency of 50 Hz, for example. 6, the X axis corresponds to the traveling direction of the PND 10 or the vehicle, the Y axis corresponds to the horizontal direction orthogonal to the X axis, and the Z axis corresponds to the vertical direction.

  The Y-axis gyro sensor 122 detects a pitch rate ωy that is an angular velocity around the Y-axis at a sampling frequency of 50 Hz, for example.

  Based on the acceleration αz in the Z-axis direction detected by the three-axis acceleration sensor 120 and the pitch rate ωy detected by the Y-axis gyro sensor 122, the speed calculation unit 124 calculates the speed V in the traveling direction according to the following formula 1, for example: Calculate 50 times per second.

  The Z-axis gyro sensor 130 detects a yaw rate ωz, which is an angular velocity around the Z-axis when the PND 10 or the vehicle is turning left, at a sampling frequency of 50 Hz, for example.

  The angle calculation unit 132 calculates the turning angle θ of the PND 10 or the vehicle by integrating a sampling period (for example, 0.02 s) with the yaw rate ωz detected by the Z-axis gyro sensor 130.

  The detection unit 140 has a function of detecting a guide point. The guide point is information such as an intersection passing through to the destination. The navigation unit 118 performs route guidance using the information on the guidance point detected by the detection unit 140. For example, the navigation unit 118 notifies the right or left turn of an intersection that is a guide point detected by the detection unit 140, the degree of approach to the intersection, and the like.

  The position acquisition unit 142 obtains the amount of change from the position at the previous calculation to the current position based on the speed V with respect to the traveling direction calculated by the speed calculation unit 124 and the turning angle θ calculated by the angle calculation unit 132. And the position calculation part 140 acquires a present position by adding the said variation | change_quantity to the position at the time of last calculation. Further, when the current position information is calculated by the GPS processing unit 114, the position information is acquired. The position acquisition unit 142 is an example of an acquisition unit of the present invention.

  The atmospheric pressure sensor 150 detects the ambient atmospheric pressure with a sampling frequency of 50 Hz, for example. The altitude calculation unit 152 calculates the current altitude based on the atmospheric pressure detected by the atmospheric pressure sensor 150.

  The navigation unit 118 can perform navigation based on the current position calculated by the position calculation unit 140 and the current altitude calculated by the altitude calculation unit 152 as described above.

  In addition, the acquisition methods, such as a present position, are not restricted to the said method using GPS positioning or a sensor. For example, it is possible to acquire the current position using the signal strength of a WiFi radio wave transmitted by a wireless LAN base station. More specifically, the PND 10 estimates the distance to each base station from the received intensity of the WiFi radio wave from each base station, uses the distance to each base station and the position of each base station, and the principle of triangulation The current position may be acquired based on

<3-3. Details of PND operation>
The functional configuration of the PND 10 has been described above. Next, the details of the operation of the PND 10 according to the present embodiment will be described with reference to FIG. FIG. 8 is a flowchart showing details of the operation of the PND 10 according to the present embodiment. As shown in FIG. 8, first, navigation and route guidance are started in response to a user operation (S102). The start of navigation in step S102 means that the navigation start button is pressed by a user operation. For example, navigation may be started simply by pressing the power button of the PND 10. Further, navigation and route guidance may be started by selecting a destination according to a user operation.

  Then, it is determined whether or not the navigation mode has been changed by a user operation via the operation unit 104 (S104). In step S104, it is determined whether or not a navigation mode is switched by a user operation during navigation execution, and a navigation mode different from the navigation mode currently being executed is selected.

  If it is determined in step S104 that the navigation mode has been changed, navigation mode change processing is performed (S106). The navigation mode changing process in step S106 is, for example, obtaining setting information including a guidance notification method corresponding to the navigation mode from the storage unit 108 and changing the setting. If it is determined in step S104 that the navigation mode has not been changed, the processes in and after step S108 are executed.

  After the position information is calculated by the position acquisition unit 142, the navigation unit 118 determines whether a guide point such as an intersection is approaching (S108). In step S108, it may be determined whether or not the guide point is approaching, and the distance and speed to the guide point may be detected.

  If it is determined in step S108 that the guide point is approaching, the fact that the guide point is approaching is notified (S110). In step S110, a guidance notification according to the navigation mode determined in step S104 is performed. For example, in the case of the car mode, navigation is performed by voice guidance, and notification by alarm or vibration is not performed. Further, when the navigation mode is the bicycle mode, notification by voice guidance is not performed, but guidance notification is performed by alarm or light. Further, when the navigation mode is the walking mode, notification by voice guidance is not performed, and guidance notification is performed by vibration.

  In step S108, when the distance or speed to the guidance point is detected, the guidance notification is performed according to the user's position and the distance and speed of the intersection. For example, since the moving speed of a bicycle is slower than that of a car, in the case of the bicycle mode, notification is made at a timing later than the timing of notifying guidance in the car mode. In the case of the walking mode, the notification is made at a later timing than in the bicycle mode. As a result, guidance notifications such as intersections are given when there is a distance from the intersection, and it is not possible to bend the intersection or to be notified after passing the intersection. Depending on the situation, guidance is notified at an appropriate timing.

  Then, it is determined whether or not to end the navigation according to the user operation (S112). If it is determined in step S112 that the navigation is to be terminated, the process is terminated. If it is determined in step S112 that the navigation is not to be ended, the processes in and after step S104 are repeated. In step S112, it is determined whether or not to end navigation depending on whether or not the navigation end button displayed on the display screen has been pressed or the power button of the PND 10 has been turned OFF by a user operation.

  With the above processing, the PND 10 can perform guidance notification suitable for the navigation mode.

<4. Second Embodiment>
PND10 demonstrated in 1st Embodiment is only an example of a navigation apparatus, and a navigation apparatus is not limited to this example. For example, the navigation device may be a mobile phone 20 described below as a second embodiment. Although not described in detail, the navigation device may be a PHS, a portable music playback device, a portable video processing device, a portable game device, a portable imaging device, or the like.

  FIG. 9 is an external view of the mobile phone 20 according to the second embodiment. As shown in FIG. 9, the mobile phone 20 according to the second embodiment includes a display unit 202, a cradle 203, an operation unit 204, a suction cup 206, a microphone 214, and a speaker 224.

  Like the PND 10 according to the first embodiment, the cradle 203 is mounted on the dashboard of the vehicle via the suction cup 206 and is mechanically and electrically connected to the mobile phone 20. For this reason, the mobile phone 20 can operate based on the electric power supplied from the vehicle via the cradle 203. Note that the mobile phone 20 has a built-in battery, and can operate based on electric power supplied from the battery when the mobile phone 20 is detached from the cradle 203.

  FIG. 10 is a functional block diagram showing the configuration of the mobile phone 20 according to the second embodiment. As shown in FIG. 10, the mobile phone 20 according to the second embodiment includes a navigation function unit 110, a display unit 202, an operation unit 204, a storage unit 208, a mobile phone function unit 210, and a general control unit. 234.

  The mobile phone function unit 210 is a configuration for realizing a call function, an e-mail function, and the like, and includes a communication antenna 212, a microphone 214, an encoder 216, a transmission / reception unit 220, a speaker 224, a decoder 226, and the like. A mobile phone control unit 230. Since the navigation function unit 110 has been described in the first embodiment, a detailed description thereof will be omitted.

  The microphone 214 collects sound and outputs it as a sound signal. The encoder 216 performs digital conversion and encoding of an audio signal input from the microphone 214 according to control by the mobile phone control unit 230, and outputs audio data to the transmission / reception unit 220.

  The transmission / reception unit 220 modulates the audio data input from the encoder 216 according to a predetermined method, and transmits the modulated data from the communication antenna 212 to the base station of the mobile phone 20 wirelessly. In addition, the transmission / reception unit 220 demodulates the radio signal by the communication antenna 212 to acquire audio data, and outputs the audio data to the decoder 226.

  The decoder 226 performs decoding, analog conversion, and the like of audio data input from the transmission / reception unit 220 under the control of the mobile phone control unit 230, and outputs an audio signal to the speaker 224. The speaker 224 outputs audio based on the audio signal supplied from the decoder 226.

  Further, when receiving the electronic mail, the mobile phone control unit 230 supplies the reception data from the transmission / reception unit 220 to the decoder 226 and causes the decoder 226 to decode the reception data. Then, the mobile phone control unit 230 outputs the e-mail data obtained by the decoding to the display unit 202 for display on the display unit 202 and records the e-mail data in the storage unit 208.

  In addition, when transmitting an e-mail, the cellular phone control unit 230 causes the encoder 216 to encode e-mail data input via the operation unit 204 and wirelessly transmits the encoded data via the transmission / reception unit 220 and the communication antenna 212.

  The overall control unit 234 controls the mobile phone function unit 210 and the navigation function unit 110 described above. For example, when a call is received while the navigation function unit 110 is executing the navigation function, the general control unit 234 temporarily switches the navigation function to the call function by the mobile phone unit 310, and after the call ends, The functional unit 110 may resume the navigation function.

  As described above, according to the embodiment of the present invention, it is possible to perform guidance notification suitable for the navigation mode by detecting the guidance point after determining the navigation mode. For example, notification is performed by voice guidance according to the navigation mode, or notification is performed by vibration or light without notification by voice guidance. In addition, according to the navigation mode, it is possible to change the point where the guidance notification is performed and to perform the guidance notification at an appropriate timing.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, each step in the processing of a navigation device such as the PND 10 or the mobile phone 20 in this specification does not necessarily have to be processed in time series in the order described as a flowchart. For example, each step in the processing of the navigation device such as the PND 10 or the mobile phone 20 may be processed in an order different from the order described as the flowchart, or may be processed in parallel.

  In addition, it is possible to create a computer program for causing hardware such as a CPU, a ROM, and a RAM built in a navigation device such as the PND 10 and the mobile phone 20 to perform the same functions as the components of the navigation device described above. A storage medium storing the computer program is also provided.

10 PND
12, 202 Display unit 20 Mobile phone 104, 204 Operation unit 108, 208 Storage unit 14, 203 Cradle 110 Navigation function unit 112 GPS antenna 114 GPS processing unit 116 Discrimination unit 118 Navigation unit 120 3-axis acceleration sensor 122 Y-axis gyro sensor 124 Speed calculation unit 130 Z-axis gyro sensor 132 Angle calculation unit 140 Detection unit 142 Position acquisition unit 150 Atmospheric pressure sensor 152 Altitude calculation unit 210 Mobile phone functional unit 212 Communication antenna 214 Microphone 216 Encoder 220 Transmission / reception unit 226 Decoder 224 Speaker 230 Mobile phone control unit 234 General Control Department

Claims (10)

An acquisition unit for acquiring position information;
A discriminator for discriminating the navigation mode;
A detection unit for detecting a guide point;
An execution unit that executes navigation to the guide point in the navigation mode determined by the determination unit using the position information;
With
The execution unit changes a notification time point for notifying the guide point according to the navigation mode, and notifies the navigation point when passing through the guide point. The detection unit detects an intersection on a route to a destination as the guide point,
The navigation device according to claim 1, wherein the execution unit makes a notification according to the navigation mode before passing through the guide point.   The navigation device according to claim 1, wherein the execution unit performs notification by changing a notification method of the guide point for each navigation mode.   The navigation apparatus in any one of Claims 1-3 provided with the memory | storage part which linked | related and memorize | stored the said navigation mode and the notification information which shows the notification method of the said guidance point.   The navigation device according to claim 1, wherein the navigation mode includes a car mode, a motorcycle mode, a bicycle mode, and a walking mode.   The navigation device according to claim 5, wherein when the determination unit determines that the navigation mode is a walking mode, the execution unit vibrates and notifies a case before passing through the guide point. .   The navigation device according to claim 5, wherein when the determination unit determines that the navigation mode is a vehicle mode, the execution unit outputs and notifies a voice before passing through the guide point.   6. The navigation device according to claim 5, wherein when the determination unit determines that the navigation mode is a bicycle mode, the execution unit outputs and notifies a light source before passing through the guide point. Computer
An acquisition unit for acquiring position information;
A discriminator for discriminating the navigation mode;
A detection unit for detecting a guide point;
An execution unit that executes navigation to the guide point in the navigation mode determined by the determination unit using the position information;
With
A program for causing the execution unit to function as a navigation device that performs notification according to the navigation mode when passing through the guide point. Obtaining location information;
Determining the navigation mode;
Detecting a guide point;
Performing navigation to the guidance point in the navigation mode determined by the determination unit using the position information, and notifying according to the navigation mode when passing through the guidance point;
Including a navigation method.

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