WO2007043398A1

WO2007043398A1 - Route guiding device, time modification reporting device, route guiding method, time modification reporting method, route guiding program, time modification reporting program, and recording medium

Info

Publication number: WO2007043398A1
Application number: PCT/JP2006/319793
Authority: WO
Inventors: Munetaka Kojima; Osamu Ueno; Tetsuya Natori
Original assignee: Pioneer Corporation
Priority date: 2005-10-07
Filing date: 2006-10-03
Publication date: 2007-04-19

Abstract

A route guiding device (100) is formed by a moving body information acquisition unit (101), a judgment unit (102), a report unit (103), and a standard time acquisition unit (104). The moving body information acquisition unit (101) acquires information on the current position and the moving direction of a moving body. The judgment unit (102) judges whether a boundary of a local time band is passed according to the information acquired by the moving body information acquisition unit (101). The report unit (103) reports the modification of the current time to a passenger of the moving body according to the result judged by the judgment unit (102). The standard time acquisition unit (104) acquires information on the standard time.

Description

Specification

Route guidance device, time change notification device, route guidance method, time change notification method, route guidance program, time change notification program, and recording medium

Technical field

The present invention relates to a route guidance device, a time change notification device, a route guidance method, a time change notification method, a route guidance program, a time change notification program, and a recording medium that guide a route to a destination point. However, the use of the present invention is not limited to the above-described route guidance device, time change notification device, route guidance method, time change notification method, route guidance program, time change notification program, and recording medium.

Background art

[0002] Conventionally, a communication device has been devised that can display the local time according to the time difference without requiring a user's correction operation using the position information of the own device measured by a GPS (Global Positioning System) receiver. ing. In such a communication device, for example, a broadcast wave in which date / time information indicating a predetermined standard time is multiplexed is received and date / time information is obtained.

[0003] In a GPS receiver, the position of a moving body such as a vehicle is obtained in accordance with the received GPS radio wave and given to a communication device as position data. In the microcomputer provided in the communication device, the time difference data of the region corresponding to the position data is specified as the specific time difference data from the time difference data indicating the time difference between the standard time and the current time of the region for each region. Then, the date / time information is corrected based on the specific time difference data, and the corrected date / time information is displayed on the display unit (for example, see Patent Document 1 below).

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2004-364176

Disclosure of the invention

Problems to be solved by the invention

However, according to the above-described prior art, the result of the change of the current time is displayed on the display unit and is not output. For this reason, the problem that the user cannot recognize changes in the current time other than by visual observation is an example. For example, while driving a moving object Etc. do not always look at the time display section frequently. In such a case, the user cannot determine whether or not the current time has been changed, and knows whether the current time displayed and displayed is the time before or after the change. I can't!

[0006] Further, when the mobile body is in operation, for example, there is a problem in that safe driving is hindered by gazing at the display on the display unit. In general, the change of the current time occurs when the user or the device main body exceeds the time change line, and it is assumed that the device main body is mounted on a moving body. In such a case, the user's attention may be directed toward the display unit, leading to inadvertent forward attention or driving mistakes.

[0007] Further, in the above-described conventional technology, a problem is that the user cannot know that a change in the force current time has occurred when the time display is switched. For example, when moving to a destination that has a time difference from the current location, it is necessary to make a plan taking into account that the current time will change. In such a case, the user should be aware in advance that a change in the current time will occur.

Means for solving the problem

[0008] In order to solve the above-described problems and achieve the object, a route guidance device according to the invention of claim 1 includes a moving body information acquisition unit that acquires information on a current position and a moving direction of the moving body, Based on the information acquired by the mobile body information acquisition means, a determination means for determining whether or not to pass the boundary of the time zone by region, and the movement based on the result determined by the determination means And a notifying means for notifying a passenger of the body of the change of the current time.

[0009] In addition, the time change notification device according to the invention of claim 5 is acquired by an information acquisition unit that acquires information on a current position and a movement direction of the device itself to be moved, and the information acquisition unit. Based on the information, a determination means for determining whether or not the moved device passes the boundary of the time zone according to the region, and based on the determination result of the determination means, the user of the own device is notified of the current time And an informing means for informing of the change.

[0010] Further, the route guidance method according to the invention of claim 6 includes a moving body information acquiring step for acquiring information on the current position and moving direction of the moving body, and the moving body information acquiring step. A determination step for determining whether or not to pass the boundary of the time zone according to the region based on the acquired information, and based on the result determined by the determination step, A notification step of notifying of a change in time.

[0011] Further, the route guidance method according to the invention of claim 7 is based on the information acquisition step of acquiring information on the current position and the movement direction of the device itself to be moved, and the information acquired by the information acquisition step. A determination step for determining whether or not the device to be moved passes through the boundary of the time zone according to the region, and a change of the current time to the user of the own device based on the determination result of the determination step. And a notification step for notifying the user.

[0012] A route guidance program according to the invention of claim 8 causes a computer to execute the route guidance method according to claim 6.

[0013] A time change notification program according to the invention of claim 9 causes a computer to execute the time change notification method according to claim 7.

[0014] Further, a recording medium according to the invention of claim 10 is readable by a computer in which the route guidance program according to claim 8 is recorded.

[0015] Further, a recording medium according to the invention of claim 11 is readable by a computer that records the time change notification program according to claim 9.

Brief Description of Drawings

[0016] FIG. 1 is a block diagram showing a functional configuration of a route guidance device according to an embodiment.

[FIG. 2] FIG. 2 is a flowchart showing a procedure of a time change process performed by a route guidance device that is helpful in the embodiment.

FIG. 3 is a block diagram showing a hardware configuration of the navigation device.

[FIG. 4] FIG. 4 is an explanatory diagram for explaining the domestic time difference in the North American continent.

FIG. 5 is an enlarged view around area D in FIG.

FIG. 6 is a flowchart showing a procedure of time correction processing by the navigation device.

Explanation of symbols

[0017] 100 route guidance device 101 Mobile body information acquisition unit

102 Judgment part

103 Notification unit

104 Standard time acquisition unit

BEST MODE FOR CARRYING OUT THE INVENTION

[0018] Referring to the accompanying drawings, a route guidance device, a time change notification device, a route guidance method, a time change notification method, a route guidance program, a time change notification program, and a recording medium according to the present invention are described below. Will be described in detail.

[0019] (Embodiment)

First, the functional configuration of the route guidance device 100 that is relevant to the embodiment will be described. FIG. 1 is a block diagram showing a functional configuration of a route guidance apparatus according to an embodiment. In FIG. 1, the route guidance device 100 includes a moving body information acquisition unit 101, a determination unit 102, a notification unit 103, and a standard time acquisition unit 104.

[0020] The moving body information acquisition unit 101 acquires information on the current position and moving direction of the moving body. The moving body is, for example, a vehicle that moves by a user's operation or control of a control program, or a person who moves by his / her own will. The current position of the moving object is calculated using, for example, GPS satellite power received by a GPS receiver. In addition, the moving direction of the moving body is calculated using, for example, acceleration or angular velocity measured by an acceleration sensor or angular velocity sensor.

[0021] Based on the information acquired by the mobile object information acquisition unit 101, the determination unit 102 determines whether or not it passes through the boundary of the regional time zone. For example, the determination unit 102 determines whether or not there is a boundary between time zones according to regions in front of the traveling direction of the road on which the moving body moves. In addition, when a destination point of movement is set for the mobile body, it is determined whether or not there is a boundary of the time zone according to the region on the route to the destination point.

[0022] Based on the result determined by the determination unit 102, the notification unit 103 notifies the passenger of the moving body of the change of the current time. The notification unit 103 outputs, for example, an alarm sound or synthesized sound indicating that the current time has changed, or turns on other devices (for example, a television or audio device) connected to the route guidance device 100. Control off. Also control You may change the time display by sending a control signal to possible peripheral devices with a clock function.

[0023] The notification unit 103 may notify that the current time is changed before passing the boundary of the regional time zone, or the current time is changed after passing the boundary of the regional time zone. You may be notified that this has happened. In addition, when the standard time is acquired by the standard time acquisition unit 104, which will be described later, at least the time before the mobile object passes the boundary of the regional time zone and the time after the mobile object passes the boundary of the regional time zone. Either one of them is notified. That is, not only the change of the current time but also the time before and after the change may be notified.

[0024] The standard time acquisition unit 104 acquires information related to the standard time. The information on the standard time is, for example, information indicating the current time for each time zone by region. Further, for example, it may be a difference value between the standard time at the current point and the standard time after passing through the boundary of the time zone according to region. With this information, it is possible to know the time before the mobile body passes the boundary of the regional time zone and the time after passing the boundary of the regional time zone.

Next, a description will be given of the time change process performed by the route guidance device 100 that is effective in the embodiment. FIG. 2 is a flowchart showing a procedure of time change processing performed by the route guidance device according to the embodiment. In the flowchart of FIG. 2, the route guidance apparatus 100 first acquires information on the current position and the moving direction of the moving body by the moving body information acquiring unit 101 (step S201).

Next, the determination unit 102 determines whether or not the moving body has passed through the boundary of the time zone for each region (step S 202). When the time zone boundary by region is passed (step S202: Yes), the standard time acquisition unit 104 acquires information about the standard time before and after the time zone boundary by region (step S203).

[0027] Then, the notification unit 103 notifies the change of the current time and the time before and after the change (step S204), and the processing according to this flowchart ends. Note that the notification in step S204 may be a notification of only the change of the current time, or may be a time of deviation before or after the change.

[0028] On the other hand, in step S202, if it does not pass the boundary of the regional time zone, Step S202: No), the process returns to Step S201, and the acquisition of information on the current position and moving direction of the moving object is continued. If the moving path of a moving object has been determined, for example, if there is a strong force to pass through the boundary of the regional time zone, the judgment in step S202 is up to the boundary of the regional time zone. It may be judged whether or not the force approaches within a predetermined required time or distance.

[0029] As described above, according to the route guidance device 100 that is effective in the embodiment, it is determined whether or not the vehicle passes the boundary of the regional time zone based on the current position and the moving direction of the moving body. And notify the judgment result. As a result, the user can recognize that the current time has changed or has changed without confirming the time display or the like.

[0030] In addition, by notifying in advance that the current time is to be changed, it is possible to cause the user to take measures for changing the current time. For example, by notifying the change of the current time in advance, the arrival time at the destination can be grasped by the local time, and the inconvenience due to the time difference can be reduced.

[0031] Further, by notifying that the current time has been changed, it is possible to grasp at what timing the current time has been changed. In addition, when the current time is changed, if the moving object is approaching the intersection, etc., the user will be notified more clearly that the current time has been changed by giving a subsequent notification. Can be grasped.

[0032] Further, by notifying at least one of the times before and after passing through the boundary of the time zone according to the region, the user can grasp a specific change in the current time. For example, it is possible to know whether the current time has advanced by one hour or just one hour by simply changing the current time.

[0033] In the above-described embodiment, the route guidance device 100 is notified of the time change, but the same notification may be performed using a time change notification device that notifies the time change. In this case, the time change notification device determines the boundary of the time zone according to the region based on the information acquisition unit that acquires information on the current position and movement direction of the own device to be moved, and the information acquired by the information acquisition unit. Based on the result of the decision made by the decision unit and whether or not the device to be moved passes, the current time is changed to the user of the device. It is comprised by the alerting | reporting part which alert | reports. Then, the change of time is notified by the same processing as the route guidance device 100 described above.

Example

[0034] Next, an example of the route guidance device 100 that works on the above-described embodiment will be described. In the following embodiment, a case where the route guidance device 100 is applied to a navigation device 300 mounted on a vehicle will be described.

[0035] (Hardware configuration of navigation device 300)

First, the hardware configuration of the navigation device 300 will be described. FIG. 3 is a block diagram showing a hardware configuration of the navigation device. In FIG. 3, the navigation device 300 includes a CPU 301, a ROM 302, a RAM 303, a magnetic disk drive 304, a magnetic disk 305, an optical disk drive 306, an optical disk 307, an audio iZF (interface) 308, and a microphone 309. A speaker 310, an input device 311, a video I / F 312, a display 313, a communication I / F 314, and a unit 315. Each component 301 to 315 is connected by a bus 320.

First, the CPU 301 governs overall control of the navigation device 300. The ROM 302 records programs such as a boot program, a communication program, a database creation program, and a data analysis program. The RAM 303 is used as a work area for the CPU 301.

[0037] The magnetic disk drive 304 controls reading and writing of data to the magnetic disk 305 according to the control of the CPU 301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, HD (node disk) or FD (flexible disk) can be used.

In addition, the optical disk drive 306 controls reading and writing of data to the optical disk 307 according to the control of the CPU 301. The optical disc 307 is a detachable recording medium from which data is read according to the control of the optical disc drive 306. The optical disk 307 can use a writable recording medium. Further, the removable recording medium may be a power MO of the optical disc 307, a memory card, or the like.

[0039] The audio IZF 308 includes an audio input microphone 309 and an audio output speaker 31. Connected to 0. The sound received by the microphone 309 is AZD converted in the sound IZF308. In addition, sound is output from the speaker 310. Note that the voice input from the microphone 309 can be recorded on the magnetic disk 305 or the optical disk 307 as voice data.

[0040] The input device 311 includes a remote controller, a keyboard, a mouse, a touch panel, and the like, each having a plurality of keys for inputting characters, numerical values, various instructions, and the like. Furthermore, the input device 311 can connect other information processing terminals (hereinafter simply referred to as devices) such as a digital camera to input / output data.

The video IZF 312 is connected to the display 313. Specifically, the video I / F 312 includes, for example, a graphic controller that controls the entire display 313, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. It is configured by a control IC that controls display of the display 313 based on the output image data.

The display 313 displays icons, cursors, menus, windows, or various data such as characters and images. As this display 313, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

Here, the display 313 displays the current time at the current position of the navigation device 300. The display 313 is mainly used to display the map information of the route that is currently running, and the power to display TV broadcasts and DVD images when the vehicle is stopped. The display 313 is a space for displaying the current time. Is secured. In addition, a separate display dedicated to time display may be provided to display the current time all the time.

In addition, the communication IZF 314 is connected to a network via radio and functions as an interface between the navigation device 300 and the CPU 301. The communication I / F 314 is further connected to a communication network such as the Internet via radio, and functions as an interface between the communication network and the CPU 301.

[0045] Communication networks include LANs, WANs, public line networks, mobile phone networks, and the like. Specifically, the communication IZF314 is composed of, for example, FM tuner, VICS (Vehicle Information and Communication System) Z beacon Resino, wireless navigation device, and other navigation devices, and traffic congestion that VICS center power is also distributed. Road traffic information such as traffic regulations. VICS is a registered trademark.

[0046] In addition, the GPS unit 315 uses a received wave from a GPS satellite and an output value from various sensors (for example, an angular velocity sensor, an acceleration sensor, a tire rotation speed, etc.) to position the vehicle at the current position. Information indicating the current position of the apparatus 300 is calculated. The information indicating the current position is information that identifies one point on the map information, such as latitude and longitude.

Here, a method for identifying the current position using the GPS unit 315 will be described. First, in GPS, a total of 24 GPS satellites are arranged, 4 each in 6 orbital planes around the earth. These satellites are always orbited so that the same satellites are located at the same time every day, and are always 5 from any point on the earth (but need to have a good view)! I can see the satellite.

[0048] GPS satellites are equipped with cesium (Cs) atomic clocks (oscillators) that keep accurate time in sync with the time of each satellite. In addition, each satellite is equipped with two cesium oscillator power units and two rubidium (Rb) oscillators. This is because accurate time is indispensable for GPS position measurement.

[0049] GPS satellite force and others are transmitting radio waves with two frequencies of 1575.42MHz (Ll) and 1227.60MHz (L2) (hereinafter referred to as GPS signals). This radio wave is modulated by a random number code called pseudo random code (Pseudo Random Noise Code), and when it is received by GPS 315, etc., the signal content is decoded by referring to the code corresponding to the random number table. To do.

[0050] The GPS unit 315 measures the time difference between the time when the GPS satellite force GPS signal was emitted and the time when the device received the GPS signal from the decoded code and the clock inside the device. . Then, multiply the time difference by the propagation speed of the radio wave to calculate the distance from the GPS satellite to your device (distance = speed X time).

[0051] Since accurate information on the orbit is sent from the GPS satellite, the current position of the GPS satellite can be accurately known. Therefore, if the distance of the GPS satellite force is known, the position of its own device is any position on the sphere centered on the GPS satellite and having the calculated distance as the radius. The GPS signal code string is repeatedly sent at intervals of about lms. The propagation speed of the GPS signal is 300, OOOkmZs, so the maximum measurement distance is 300, 000 X 0. 001 = 300k m. Therefore, it is necessary to know the position of the device in advance with an accuracy of about 100 km.

[0052] As described above, when the distances from three of the GPS satellites are calculated, the position of the own device is one of the two points where the three spherical surfaces intersect. In addition, one of the two points is also far away from the position force that can be predicted, so in principle one point is determined. However, in reality, the candidate points for the calculated position (the intersection of the three faces) are not two points. This is mainly because the accuracy of the clock mounted on the GPS unit 315 is lower than the atomic clock mounted on the GPS satellite, resulting in an error in the calculation results.

[0053] For this reason, the GPS unit 315 receives GPS signals from a total of four GPS satellites.

This can be considered to be obtained by introducing new information (formula) with the error of the clock on the GPS unit 315 side as another unknown. In this manner, the GPS unit 315 can obtain a substantially accurate position that converges to one point by receiving GPS signals from four GPS satellites.

The above-described clock error on the GPS unit 315 side may be corrected by a GPS signal.

In addition, the position where the GPS signal force is calculated may be further corrected by an angular velocity sensor, a calorie velocity sensor, a tire rotation speed, or the like mounted on the device itself.

[0055] Of the functional configuration of the route guidance device 100 according to the above-described embodiment, the mobile body information acquisition unit 101 is the GPS unit 315, the determination unit 102 is the CPU 301, and the notification unit 103 is the voice IZF 308. The functions of the speaker 310, the display 313, the standard time acquisition unit 104, the magnetic disk 305, and the optical disk 307 are realized.

[0056] (Time correction processing by the navigation device 300)

Next, time correction processing by the navigation device 300 will be described. The navigation device 300 uses the current position calculated by the GPS unit 315 to correct the current time displayed on the device itself. The current time is corrected when the standard time zone of the current location changes, in addition to the slight error of the clock provided on the device itself.

FIG. 4 is an explanatory diagram for explaining the domestic time difference in the North American continent. In this embodiment, a vehicle equipped with the navigation device 300 moves east and west on the North American continent. Here, in the North American continent, a plurality of standard time zones are mixed. Ie one

There is a domestic time difference.

[0058] Here, the time difference is determined to occur every 15 degrees for 1 hour with the British Greenwich, which is the world standard time, at 0 degrees longitude, as the earth makes one revolution in 24 hours. In Japan, the 135 degree east longitude Akashi Pass is in the center of the Japanese archipelago and is now the standard time capital. The time difference within one country (domestic time difference) cannot be established if it is within the range of 7.5 degrees longitude (30 minutes). It has been.

[0059] In Fig. 4, the North America continent has different time zones depending on the region. Each time zone is Pacific Standard Time / PST A1, Mountain Standard Time / MST A2, Central Standard TimeZCST A3, Eastern Standard Time ( Eastern St andard TimeZEST) A4.

[0060] The time difference with Japan is minus 17 hours of Japan time in Pacific Standard Time Zone A1, minus 16 hours of Japan time in Mountain Range Standard Time Zone A2, minus 15 hours of Japan Time in Central Standard Time Zone A3, Eastern Standard Time It is minus 14 hours in Japan time in obi A4. The standard time is set earlier because the sun rises earlier in the eastern time zone and the sun sets. For example, Pacific Standard Time Zone A1 is 10:00 am and Eastern Standard Time Zone A4 is 1 pm (13:00). The daylight saving time is the daylight saving time from the first Sunday in April to the last Saturday in October, and it is minus one hour each in comparison with Japan.

[0061] Each time zone is divided into states in principle, and the time zone boundaries bl to b3 face the state border in most parts. However, there are areas where the time zone boundaries bl to b3 do not match the state boundaries. For example, in Tennessee (TN), Kentucky (KY), South Dakota (SD), and Idaho (ID), time zone boundaries bl to b3 are located so as to bisect the state. There are also states, such as Texas (TX), Kansas (KS), and Michigan (Ml), where only a small part of the western end of the state is in a different time zone.

[0062] Here, as an example of moving beyond the time zone boundary lines bl to b3, area D in FIG. The case of moving around the time zone boundary line bl passing through the state boundary of California (CA) and Arizona (AZ) shown in FIG. Fig. 5 is an enlarged view of area D around Fig. 4.

[0063] In Figure 5, the Colorado River, shown by diagonal lines, flows near the border between California (CA) and Arizona (AZ). The time-zone boundary bl shown by a dashed line is along the j11 bank of the Arizona side of the Colorado River and coincides with the state boundaries of California and Arizona. California is west of time zone boundary bl, and Arizona is east. Near the center of Figure 5, there is a road R in the east and west, and vehicles traveling on this road R will pass the time zone boundary bl.

[0064] For example, the intersection P between the center of the road R and the time zone boundary bl is 33 degrees 36 minutes 16 seconds north latitude and 114 degrees 35 minutes 51 seconds west. If this position is calculated by the GPS unit 315 as the current position of its own device, the time zone boundary line bl is passed. At this time, if you move in the direction of arrow E in Fig. 5, that is, in the direction of west force east and enter California State Arizona, the current time is incremented by one hour. On the other hand, if the vehicle moves in the direction of arrow W in Fig. 5, that is, from east to west, and enters Arizona State California, the current time is negative for one hour.

Here, the navigation apparatus 300 can predict that the vehicle will pass through the time zone boundary lines bl to b3 in advance in order to search for a route to the destination point. Even if you travel without searching for a route to the destination, you will pass through the time zone boundaries bl to b3 from the map data (regional time zone data) and the direction of travel of the vehicle. Can be predicted. Furthermore, the estimated required time to the destination point is also calculated during the route search, and the estimated time passing through the time zone boundaries bl to b3 can be calculated. Therefore, it is possible to detect that the standard time changes before actually passing through the time zone boundaries bl to b3.

[0066] Next, a description will be given of the time correction processing of the navigation device 300 when moving beyond the time zone boundary lines bl to b3. In the following, the force that is explained as performing the notification before passing the time zone boundary lines bl to b3 The timing of the notification is when the time zone boundary lines bl to b3 are passed or the time zone boundary lines bl to b3 are passed. It may be after. FIG. 6 is a flowchart showing a procedure of time correction processing by the navigation device. In the flowchart of FIG. 6, the navigation device 300 first receives a GPS signal oscillated by a GPS satellite by the GPS unit 315 (step S601), and calculates the standard time of the current location of the own device (vehicle) ( Step S602). Next, the output force of the angular velocity sensor, acceleration sensor, etc. is also measured in the moving direction of the vehicle (step S603).

[0068] Then, it is determined whether or not the time zone boundaries bl to b3 are within a predetermined distance in the moving direction from the current position and the moving direction calculated and measured in steps S602 and S603 (step S604). At this time, if a route to the destination point is set, it is determined whether the time zone boundaries bl to b3 are within a predetermined distance on the route. Alternatively, it may be determined by the time required to reach the time zone boundary lines bl to b3, not the distance.

[0069] If the time zone boundary lines bl to b3 are within the predetermined distance (step S604: Yes), the standard time after passing the time zone boundary lines bl to b3 is calculated (step S605). For example, when moving in the direction of arrow E in Fig. 5 and passing the time zone boundary line bl, the standard time after passing is the time displayed by adding 1 hour to the current time currently displayed. When moving in the direction of arrow W in Fig. 5 and passing the time zone boundary bl, the standard time after passing is the time minus one hour from the current time displayed.

Then, the change of the standard time is notified to the user of navigation device 300 (step S606). The notification includes, for example, voice output of a standard time change message or alarm sound output from the speaker 310, display of a change message on the display 313, and the like. At this time, the standard time after passing the time zone boundary bl to b3 calculated in step S605 may be notified together! /.

[0071] When outputting a standard time change message, for example, a message such as “Time zone (standard time zone) will change in one kilometer.” Is output. In addition, when notification is made after passing the time zone boundary line bl to b3, a message such as “Time zone (standard time zone) has changed” or “Time after change is 11:30” is output. Or, for example, you can output different alarm sounds such as “Peep” when the standard time is incremented by 1 hour and “Beep” when the standard time is decremented by 1 hour!

[0072] On the other hand, when there is no time zone boundary line bl to b3 within the predetermined distance (step S604: No), Return to step S601 to continue the subsequent processing.

In step S606, after notifying the change of the standard time, the navigation apparatus 300 waits until it passes through the time zone boundary lines bl to b3 (step S607: loop of No). Then, when the time zone boundary lines bl to b3 are passed (step S607: Yes), the standard time in the navigation device 300 is changed (step S608), and the processing according to this flowchart ends.

[0074] Changing the standard time in the navigation device 300 is, for example, changing the current time displayed on the display 313 or changing the set time of an internal timer. At this time, the time display of the in-vehicle device that can be controlled by Bluetooth (registered trademark), such as a mobile phone, may be changed.

[0075] Also, for example, when navigation device 300 is capable of receiving a television broadcast wave and can view and view the television broadcast on display 313, the time of the program guide changes due to the different standard time. Therefore, the program guide may be automatically reacquired. At this time, if timer recording is set, the timer setting time may be changed according to the program.

[0076] Also, for example, in the case where the destination point is set in the navigation device 300, when the destination point is set in a facility that belongs to a standard time zone different from the current position and has limited business hours. It is also possible to display the business hours according to the time display of the current position and to confirm the arrival time setting.

[0077] For example, taking Fig. 5 as an example, if a supermarket in Arizona heads from Calif., It will be 20 in California, even if the supermarket is open until 21:00 local time. When it is time, it is already closed. In this case, for example, if this supermarket is selected as the destination point, a confirmation message such as "Are you sure you want to close this supermarket at 20:00 at the current time?" .

[0078] For example, the same applies to services that vary in tolls depending on the time of day (such as tolls on toll roads and mobile phone calls) and places where traffic restrictions are imposed by time of day (such as school zones). Notification can be made. [0079] Further, by passing the time zone boundaries bl to b3, it may be notified that a particular attention is paid when the dates are different. For example, when searching for a route by setting a destination point, if the desired arrival time is set, “Do you want to search the route using the standard time at the current location? Are you sure?” The desired arrival time is 0:30 on the 30th at the standard time of the destination point.

[0080] In the above-described embodiment, the standard time zone to which the current position of the power device that determines whether or not the force passes through the time zone boundaries bl to b3 may be monitored sequentially. For example, the navigation device 300 is provided with a table indicating to which standard time zone each point in the North American continent belongs, and the GPS unit 315 is used to calculate the current position of the device itself and at the same time Refer to the standard time zone to which the current position belongs. And if the standard time zone changes due to movement, you can change the standard time and report it! /.

[0081] As described above, according to navigation device 300, whether or not the force passes through time zone boundaries bl to b3 using the hardware configuration used for route search and route guidance of navigation device 300 is determined. And the determination result is notified by voice or the like. This allows the user to recognize that the current time will change or has already been changed without confirming the time display or the like.

[0082] In addition, by notifying in advance that the current time is to be changed, it is possible to cause the user to take measures for changing the current time. For example, by notifying the change of the current time in advance, the arrival time at the destination can be grasped by the local time, and the inconvenience due to the time difference can be reduced.

[0083] Further, by notifying that the current time has been changed, it is possible to determine at which timing the current time has been changed. In addition, when the current time is changed, if the vehicle is approaching the intersection, etc., the user will be notified more clearly that the current time has been changed by making a subsequent notification. Can be grasped

[0084] Further, by notifying the time before and after passing through the time zone boundaries bl to b3, The user can be made aware of the amount of change in the physical current time. For example, you can know not only that the current time has changed, but also whether the current time has advanced by one hour, or that it has returned by one hour.

In the above-described embodiment, the navigation device 300 is notified of the change of the time! /, But the time change notification device that only notifies the change of the time is used. Notification may be performed. In this case, the time change notification device moves the boundary of the time zone according to the region based on the GPS unit 315 that acquires information on the current position and the moving direction of the own device to be moved, and the information acquired by the GPS unit 315. CPU301 that determines whether or not its own device will pass, and voice IZF308, speaker 310, and display 313 that notify the user of the current device of the current time change based on the determination result of CPU301 . Then, the notification is made by changing the time by the same processing as that of the navigation device 300 described above.

Note that the route guidance method described in the present embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed when the recording medium force is also read by the computer. The program may be a transmission medium that can be distributed through a network such as the Internet.

Claims

The scope of the claims

[1] A mobile object information acquisition means for acquiring information on the current position and the movement direction of the mobile object;

Determination means for determining whether or not to pass through the boundary of the time zone according to region based on the information acquired by the mobile body information acquisition means;

Informing means for informing a passenger of the moving body of a change in the current time based on a result determined by the determining means;

A route guidance device comprising:

[2] The route guidance device according to claim 1, wherein the notifying unit notifies that the current time is changed before passing through the boundary of the regional time zone.

[3] The route guidance device according to claim 1, wherein the notifying unit notifies that the current time has changed after passing through the boundary of the time zone according to the region.

[4] Furthermore, a standard time acquisition means for acquiring information on the standard time is provided,

The notification means is based on the standard time acquired by the standard time acquisition means, the time before the mobile body passes the boundary of the regional time zone and after the boundary of the regional time zone. The route guidance device according to any one of claims 1 to 3, wherein at least one of the times is notified together.

[5] An information acquisition means for acquiring information related to the current position and moving direction of the device to be moved;

A determination unit that determines whether or not the device to be moved passes through a boundary of a time zone according to a region based on the information acquired by the information acquisition unit;

Based on the determination result of the determination unit, a notification unit that notifies the user of the device of the change of the current time;

A time change notification device comprising:

[6] A moving body information acquisition step for acquiring information on the current position and moving direction of the moving body;

A determination step of determining whether or not the vehicle passes through the boundary of the time zone according to the area based on the information acquired by the mobile body information acquisition step; Based on a result determined by the determination step, a notification step of notifying a passenger of the moving body of a change in the current time;

A route guidance method comprising:

[7] An information acquisition process for acquiring information related to the current position and moving direction of the device to be moved;

Based on the information acquired by the information acquisition step, a determination step of determining whether or not the device to be moved passes through a boundary of a time zone by region;

Based on the determination result of the determination step, a notification step of notifying the user of the device of the change of the current time;

A time change notification method comprising:

[8] A route guidance program that causes a computer to execute the route guidance method according to claim 6.

[9] A time change notification program which causes a computer to execute the time change notification method according to claim 7.

[10] A computer-readable recording medium on which the route guidance program according to claim 8 is recorded.

[11] A computer-readable recording medium in which the time change notification program according to claim 9 is recorded.