JP4323379B2 - NAVIGATION DEVICE, INFORMATION PRESENTATION METHOD, AND NAVIGATION PROGRAM - Google Patents

Description

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

  The navigation device receives a signal transmitted from a GPS (Global Positioning Systems) satellite to detect the current position of the vehicle, and records information on the vehicle detected by various sensors and a recording device of the navigation device. Based on the map information, the current position of the own vehicle is matched with the road shape of the map data, and the current position of the own vehicle is displayed on the map displayed on the display unit. When a destination is set, guidance (navigation) to the destination is executed.

  By the way, in the case of commuting or attending school, although it is the same departure place and destination every day, it is necessary to input the departure place and the destination every time it is used, and the operation is complicated for the user. Therefore, in the technology disclosed in Patent Document 1, the starting point and the destination in the past route search are stored together with the route search frequency for each day of the week and the time zone, and the route in the past route search in the time zone of the day of the week to be used. By reading out the starting point and destination having the highest search frequency, setting the starting point and the destination as the starting point and the destination, and performing the route search, the trouble of inputting the starting point and the destination is omitted.

JP-A-8-271277 (Claims, Abstract)

  By the way, in the technique described in Patent Document 1, for example, since the route having the shortest distance or the shortest time is selected, there is a high possibility that the same route is selected every time. For this reason, the daily behavior becomes a pattern, and the behavior is easily grasped by a burglar, a kidnapper, or a terrorist. As a result, a problem in crime prevention occurs.

  The present invention has been made based on the above circumstances, and an object of the present invention is to provide a navigation device, an information presentation method, and a navigation program capable of route selection in consideration of crime prevention.

In order to achieve the above-described object, the navigation device of the present invention refers to storage means for storing information related to a route taken in the past, and information stored in the storage means . When the route is traveling in approximately the same time zone, the search means for searching for the route to the destination and the route obtained by the search means are presented so that a route different from the route is selected. Presenting means.

  In addition to the above-described invention, the navigation device of another invention excludes, from the search target, road links that the search means has passed a predetermined number of times within a certain past period.

  In addition to the above-described inventions, in the navigation device of another invention, the search means does not exclude road links near the destination from the search target.

  In addition to the above-described inventions, the navigation device according to another invention, when the search means excludes a predetermined road link and the arrival time at the destination is later than the predetermined time, The links are not excluded from the search target.

  In addition to the above-described invention, the navigation device according to another invention may include a road link that the search means has traveled a predetermined number of times within a predetermined past period from a plurality of route groups obtained as a result of the search. The route that includes it is not selected.

  In addition to the above-described invention, in the navigation device of another invention, the search means searches for a route passing through a predetermined area where the crime occurrence rate is high so that the route changes more frequently than in other areas. I am doing so.

  In addition to the above-mentioned invention, the navigation device of another invention further includes an input means for inputting a desired arrival time to the destination, and the search means is provided until the desired arrival time input via the input means. The route that can reach the destination is searched.

  In addition to the above-mentioned invention, the navigation device of another invention selects a predetermined route according to the timing of input from the user when there are a plurality of routes specified by the search means, or A predetermined route is selected according to the random number.

  In addition to the above-described invention, the navigation device of another invention enables the search means to search for a route including public transportation.

  In addition to the above-described inventions, the navigation device of another invention provides a route from the current location to the station or bus stop where the search means can access, and a route from the station or bus stop to the destination that can access the destination. Each of the routes from the station or bus stop accessible from the current location to the station or bus stop accessible to the destination can be searched.

  In addition to the above-described invention, in the navigation device of another invention, the search means searches for a route in consideration of the arrival time at the destination or the necessary transportation cost.

The information presenting method of the present invention is an information presenting method used in a navigation device having at least a storage means, a searching means, and a presenting means, and stores information related to a route taken by the storage means in the past. The search means refers to the stored information, and when the substantially same route is passed within the same fixed time period in the past fixed period, so as to select a route different from the route, The route to the destination is searched, and the presenting means presents the route obtained by the search.

In addition, the navigation program of the present invention refers to information stored in the storage means for storing information related to routes that have been taken in the past, and refers to the information stored in the storage means. When traveling in a time zone, the computer is used as a search means for searching for a route to the destination and a presentation means for presenting the route obtained by the search means so as to select a route different from the route. I try to make it work.

  The present invention can provide a navigation device capable of route selection in consideration of crime prevention, an information presentation method, and a navigation program.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration example of a navigation device according to the first embodiment of the present invention. As shown in this figure, the navigation apparatus 10 according to the first embodiment of the present invention includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, an HDD (Hard). (Disk Drive) 14, video circuit 15, I / F (Interface) 16, bus 17, LCD (Liquid Crystal Display) 18, input device 19, sensor 20, GPS device 21, and audio output device 22. .

  Here, the CPU 11 as search means is a central processing unit that executes various arithmetic processes according to a program stored in the HDD 14 and controls each part of the apparatus.

  The ROM 12 is a semiconductor storage device that stores a program executed by the CPU 11. The RAM 13 is a semiconductor storage device that temporarily stores a program executed by the CPU 11.

  The HDD 14 as a storage means stores a program and data executed by the CPU 11. Specifically, the HDD 14 has map information 14a and history information 14b. The video circuit 15 as a part of the presenting unit executes a drawing process according to a drawing command supplied from the CPU 11, converts an image obtained as a result of the drawing process into a video signal, and outputs the video signal to the LCD 18.

  The I / F 16 converts and inputs the expression format of signals output from the input device 19, the sensor 20, and the GPS device 21, and converts the expression format of signals output to the audio output device. The bus 17 is a signal line group for connecting the CPU 11, ROM 12, RAM 13, HDD 14, video circuit 15, and I / F 16 to each other and enabling information exchange between them.

  The LCD 18 as a part of the presenting means is a display device for displaying a video signal output from the video circuit 15. FIG. 2 is a diagram for explaining the details of the LCD 18. As shown in this figure, the LCD 18 has a display unit 18a disposed at the center, and hardware buttons 19b to 19g serving as an input device 19 are disposed around the display unit 18a. Further, since the touch panel 19a as the input device 19 is arranged so as to be superimposed on the display unit 18a, the desired information can be obtained by operating the touch panel 19a with reference to image information displayed on the display unit 18a. Information can be entered.

In this example, a map around the current location of the vehicle is displayed on the display unit 18a. The hardware button 19b is a button operated when adjusting the volume of the sound output from the sound output device 22, for example. Hardware buttons 19c, for example, a button that is operated to start playing the CD (Compact Dis c (R)). The hardware button 19d is a button operated when displaying the point menu. The hardware button 19e is a button operated when information displayed on the display unit 18a is selected from either navigation or TV (television video). Hardware button 19f is, CD, is operated to stop playing the DVD (Digital Versatile Dis c). The hardware button 19g is a button operated when starting playback of a DVD.

  Returning to FIG. 1, the input device 19 as an input unit includes the touch panel 19 a and the hardware buttons 19 b to 19 g arranged so as to be superimposed on the display unit of the LCD 18 as described above. Generate and output information according to the operation.

  The sensor 20 includes a vehicle speed sensor that indicates the speed of the vehicle, an angular speed sensor that indicates the angular speed of each control axis of the vehicle, and a side brake sensor that indicates the operation state of the side brake.

  The GPS device 21 is a device that obtains the current position (latitude, longitude, altitude) of the vehicle using information transmitted from a plurality of GPS artificial satellites. The audio output device 22 performs D / A (Digital to Analog) conversion on the data supplied from the CPU 11 and outputs it as audio.

  Next, the operation of the navigation device according to the first embodiment of the present invention will be described.

  FIG. 3 is a flowchart for explaining the operation of the first exemplary embodiment of the present invention. The processing of this flowchart is executed when an operation for searching for a destination is performed.

  Step S <b> 10: The CPU 11 acquires predetermined information from the HDD 14 and supplies it to the video circuit 15. As a result, a GUI (Graphical User Interface) image for inputting the destination is displayed on the LCD 18. FIG. 4 is a diagram illustrating a display example of a GUI image for inputting a destination. In this example, the GUI image 40 is displayed on the display unit 18 a of the LCD 18, and “Destination search” as the title 41 is displayed at the top of the frame constituting the GUI image 40. Below that, text boxes 42 and 43 are displayed. Below that, buttons 44 and 45 are displayed. Here, the destination is input in the text box 42. In this example, “work place” is entered. In addition to this, for example, a telephone number, an address, a latitude / longitude, and the like may be input. In the text box 43, a desired arrival time at the destination is input. In this example, “9:30” is input. The button 44 is operated when canceling the input content. The button 45 is operated when searching for a route with the input content.

  Step S11: The CPU 11 determines whether or not input of a predetermined item has been completed in the GUI image 40 shown in FIG. 4, that is, whether or not the button 45 has been operated. As a result, if the button 45 is operated, the process proceeds to step S12, and otherwise the same process is repeated.

  Step S12: The CPU 11 acquires information input in the GUI image 40 shown in FIG.

  Step S13: The CPU 11 acquires information indicating the destination input in the text box 42 (hereinafter referred to as “destination information”) from the information acquired in step S12.

  Step S <b> 14: The CPU 11 refers to the output of the GPS device 21 to identify the current position of the host vehicle, identifies the destination from the destination information acquired in step S <b> 13, and uses the map information 14 a stored in the HDD 14. The route from the present location to the destination is searched with reference to the reference. At this time, a route that cannot be reached by the time entered in the text box 43 is excluded from the target.

  Step S15: The CPU 11 acquires the history information 14b stored in the HDD 14. Here, the history information 14b is information indicating a route traveled within a certain past period (for example, the past 8 days).

  FIG. 5 is a diagram illustrating an example of the history information 14b. As shown in this figure, the history information 14b is composed of “No.”, “Date / time”, “Departure point”, “Destination”, “Passing link”, “Time”, and “Others”. . Here, “No.” is a serial number, and a new serial number is generated and given each time route guidance is performed. “Date and time” indicates the date and time when the route guidance was performed. “Departure” indicates the departure point of route guidance, and “Destination” indicates the destination of route guidance. The “passing link” indicates a road link that has passed in each route guidance, and is configured by a number indicating each road link. In addition, a road link means each link when a road is represented as a combination of a plurality of links. “Time” indicates the time required to actually pass through the road link. “Others” indicates information (for example, one-way streets, arterial roads, etc.) relating to roads corresponding to each road link.

  Step S16: The CPU 11 selects one predetermined route from the route group from the current location (departure location) to the destination identified in the processing of step S14.

  Step S17: The CPU 11 compares the route selected in step S16 with each of the history information 14b shown in FIG.

  Step S18: The CPU 11 refers to the comparison result in step S17, and determines whether or not the route selected in step S16 has pattern characteristics. Specifically, the route selected in step S16 is compared with the information of one day before, two days before, three days before stored in the history information 14b, and “day of the week”, “time zone”, “departure place”, “ It is determined whether or not the “destination” and “passing link” are the same or substantially the same, and if applicable, the process proceeds to step S19 assuming that there is a pattern, and otherwise returns to step S16. Similar processing is repeated.

  Step S19: The CPU 11 displays all the routes obtained in step S14 on the LCD 18 and displays the route determined to have no pattern in the processes of steps S16 to S18 as a route for guiding. If there are a plurality of routes having no pattern characteristics, for example, a predetermined route is selected by a random number.

  FIG. 6 is a display example of a GUI image displayed on the LCD 18 by the process of step S19. In this example, a GUI image 60 is displayed at the center of the display unit 18 a of the LCD 18. At the top of the frame constituting the GUI image 60, “Today I will guide you on R2” is displayed as a message 61. Below that, a plurality of routes R1 to R4 from the home to the office are displayed. In addition, at the bottom of the display unit 18, an icon 70 that displays an estimated arrival time at the destination, an icon 71 that indicates the time when the latest VICS (Vehicle Information and Communication System) information is received, and an arrival at the destination An icon 72 indicating a fee required until the time (highway toll, etc.) is displayed. In this example, a plurality of routes R1 to R4 are specified by the route search process shown in step S14, and R2 is selected as a route having no pattern property by the processes of steps S16 to S18.

  Step S20: The CPU 11 starts guidance on the target route. That is, the CPU 11 refers to the output of the GPS device 21 to identify the current position of the vehicle, acquires map information around the current position from the map information 14 a of the HDD 14, and displays it on the LCD 18. Then, route guidance by voice or the like is performed so that the vehicle moves along the target route. At this time, the CPU 11 generates history information related to the route being guided and stores it in the HDD 14.

  According to the above embodiment, since the route search is performed by referring to the history information indicating the route that has passed in the past, it is possible to prevent the commuting route or the commuting route from being patterned. It becomes possible to increase.

  Moreover, according to the above embodiment, even if the user intends to change the route consciously, it can be surely prevented from falling into a certain pattern unconsciously.

  In the above embodiment, in the process of step S18, it is determined whether or not there is a pattern by comparing with the history information up to 3 days ago, but compared with the history information of other days. It is also possible to judge. In determining whether or not there is a pattern, whether or not “day of the week”, “time zone”, “departure place”, “destination”, and “passing link” are the same or substantially the same. For example, one or both of “day of the week” and “time zone” may be ignored and determined.

  In the above embodiment, the process shown in FIG. 3 is executed when a route search is performed. However, when the navigation device is activated (engine is started) in the same time zone as usual. Can be assumed to have been started for commuting to school or commuting, in such a case, referring to the history information 14b, the current location, destination and desired arrival time are automatically set and processing is started. It is also possible.

  In the above processing, a route different from the route guided in the past is selected. For example, a road link that has passed during a certain period in the past is excluded from the target and obtained by searching. You may make it show the route which was. FIG. 7 is a flowchart for explaining processing based on such a method. When the processing of this flowchart is started, the following steps are executed.

  Step S30: The CPU 11 displays the same GUI image 40 as in FIG. 4 on the display unit 18a of the LCD 18.

  Step S31: The CPU 11 proceeds to step S32 when the button 45 of the GUI image 40 is operated, and repeats the same processing otherwise.

  Step S32: The CPU 11 acquires information input in the GUI image 40.

  Step S33: The CPU 11 acquires destination information from the information acquired in step S32.

  Step S34: The CPU 11 acquires the history information 14b (see FIG. 5) stored in the HDD 14. Specifically, for example, within the past 10 days (the period may be shorter or longer than this. However, 8 days or more are desirable. This is to prevent the same route from being taken on the same day). Get history information for.

  Step S35: Among the road links that are candidates for the route connecting the current location and the destination, the CPU 11 searches for the road links included in the “passing link” of the history information acquired in step S34. exclude. At this time, road links existing near the destination (for example, within 50 m from the destination) are not excluded. This is because the destination may not be reached unless the road link is passed.

  Step S36: The CPU 11 executes a process for searching for a route by using a road link (remaining road link) not excluded in the process of step S35 as a candidate. If the destination cannot be reached if there is no predetermined road link excluded in step S35, a route is searched by preferentially selecting a road link with a small number of past passes.

  Step S37: The CPU 11 displays the route group obtained by the process of step S36 on the display unit 18a of the LCD 18.

  Step S38: The CPU 11 determines whether or not a predetermined route has been selected from the route group displayed in step S37, and if selected, proceeds to step S39, and otherwise repeats the same processing. .

  Step S39: The CPU 11 starts route guidance based on the route selected in step S38.

  According to the above embodiment, since the road search is performed by excluding the road link that has been passed within a certain past period from the target, the road link that has been passed during the past certain period is not passed. It becomes possible to do so.

  In the above embodiment, it is determined whether or not to exclude based on whether or not the target road link is included in the history information 14b. For example, in a region where the crime occurrence rate is high You may make it exclude from the object also about the road link of the road to which it belongs. According to such a method, a safer path can be ensured. If the road link belonging to the area cannot be excluded, the search can be performed so that the route or the traveling time zone is frequently changed.

  Further, when a predetermined road link is excluded, if the estimated arrival time at the destination is later than a desired time, the road link may be excluded from the exclusion target.

  Next, a process of narrowing candidates by excluding a route including a road link included in history information from a route group obtained as a result of route search will be described. FIG. 8 is a flowchart showing an example of such processing. When the processing of this flowchart is executed, the following steps are executed.

  Step S50: The CPU 11 displays the same GUI image 40 as in FIG. 4 on the display unit 18a of the LCD 18.

  Step S51: The CPU 11 proceeds to step S52 when the button 45 of the GUI image 40 is operated, and repeats the same processing otherwise.

  Step S52: The CPU 11 acquires information input in the GUI image 40.

  Step S53: The CPU 11 acquires destination information from the information acquired in step S52.

  Step S54: The CPU 11 identifies the current location with reference to the output of the GPS device 21, identifies the destination corresponding to the destination information acquired in Step S53, and stores the route between these in the HDD 14. A search is made with reference to the map information 14a.

  Step S55: The CPU 11 acquires the history information 14b (see FIG. 5) from the HDD 14. Specifically, for example, within the past 10 days (as described above, the period may be shorter or longer. However, it is preferable that the period is 8 days or longer. To obtain the history information.

  Step S56: The CPU 11 selects one predetermined route from the route group obtained in step S54.

  Step S57: The CPU 11 compares the route selected in step S56 with the history information acquired in step S55.

  Step S58: The CPU 11 detects a road link included in the passage link of the history information a predetermined number of times or more among road links constituting the route. In other words, in the process of step S58, a road link that has passed a predetermined number of times in the past is detected from the target route.

  Step S59: In the process of step S58, the CPU 11 returns to step S56 when a link that has passed a predetermined number of times in the past is detected, repeats the same process, and otherwise proceeds to step S60.

  Step S60: The CPU 11 displays the route specified in Step S59 on the display unit 18a of the LCD 18.

  Step S61: The CPU 11 starts guidance for the route displayed in step S60.

  According to the above embodiment, since the route including the road link that has been passed a plurality of times in the past is excluded from the target, it is possible to prevent the same road from being repeatedly passed. In the above embodiment, routes including road links that have been passed multiple times in the past are uniformly excluded from the target. For example, road links belonging to areas with a high crime rate are excluded. It is also possible to set the number of times used as a reference as to whether or not to be lower than road links belonging to other regions. In addition, even if a road link has been passed several times in the past, if the time zone scheduled to pass is completely different from the time zone that has been passed in the past (for example, when it is different for more than one hour), the route including the road link May not be excluded.

  Next, a second embodiment of the present invention will be described.

  FIG. 9 is a diagram illustrating a configuration example of a navigation device according to the second embodiment of the present invention. In the example shown in this figure, a configuration example as a portable telephone or a PDA (Personal Digital Assistance) is shown.

  As shown in FIG. 9, the navigation device 90 according to the second embodiment of the present invention includes a CPU 91, ROM 92, RAM 93, EEPROM (Electronically Erasable and Programmable Read Only Memory) 94, video circuit 95, I / F 96, bus. 97, LCD 98, input device 99, communication device 100, GPS device 101, and voice input / output device 102.

  Here, the CPU 91 as a determination unit is a central processing unit that executes various arithmetic processes based on a program stored in the ROM 92 or the EEPROM 94 and controls each unit of the apparatus. The ROM 92 is a semiconductor storage device that stores programs executed by the CPU 91. The RAM 93 is a semiconductor memory device that temporarily stores a program executed by the CPU 91 or data being calculated. The EEPROM 94 as a storage means is a semiconductor storage device that stores map information 94a, history information 94b, and the like. The video circuit 95 as a part of the presenting means executes a drawing process according to a drawing command supplied from the CPU 91, converts the obtained image into a video signal, and outputs it to the LCD 98. The I / F 96 appropriately changes the data representation format when the CPU 91 exchanges data with the communication device 100, the GPS device 101, and the voice input / output device 102. The bus 97 is a signal line group for connecting the CPU 91, the ROM 92, the RAM 93, the EEPROM 94, the video circuit 95, and the I / F 96 to each other and enabling data exchange between them.

  The LCD 98 as a presenting means is a display device that displays the video signal output from the video circuit 95. The input device 99 is configured by, for example, a switch or a button, and generates and outputs data corresponding to a user operation. The communication device 100 exchanges information with the nearest base station 120 by radio waves. The GPS device 101 receives signals from a plurality of GPS satellites, calculates and outputs the current position (latitude, longitude, altitude) based on these signals. The voice input / output device 102 includes a microphone and an A / D converter that input voice, a D / A converter and a speaker that output voice, and the like.

  Next, the operation of the navigation device 90 according to the second embodiment of the present invention will be described.

  FIG. 10 is a flowchart for explaining the operation of the navigation device 90 according to the second embodiment of the present invention. When the processing of this flowchart is started, the following steps are executed.

  Step S80: The CPU 91 refers to the output of the GPS device 101 to determine whether or not the user carrying the navigation device 90 has started to move. If the user has started moving, the process proceeds to step S81. In this case, the same processing is repeated.

  Step S81: The CPU 91 refers to the time information included in the output from the GPS device 101 and the history information 94b stored in the EEPROM 94, and the history information 94b starts to move almost every day. It is determined whether or not the current time zone. As a result, if it is a predetermined time zone, the process proceeds to step S82, and otherwise, the process ends.

  Step S82: If the CPU 91 determines in step S81 that it is the predetermined time zone, it determines that it is commuting or school. Specifically, it is determined that the person is going to work if the movement is started from 9 am before 9 am, and is determined to be home if the movement is started from the office after 5 am. .

  Step S83: The CPU 91 acquires the current date and time information from the output of the GPS device 101.

  Step S84: The CPU 91 refers to the output of the GPS device 101, acquires the current position, and compares it with the map information 94a to identify the road link that is currently passing.

  Step S85: The CPU 91 acquires the history information 94b from the EEPROM 94.

  Step S86: The CPU 91 determines whether or not the route is patterned. Specifically, it is determined whether or not a road link that is currently being passed has passed a predetermined number of times within a predetermined period in the same time period, and if it is, a pattern is formed. The process proceeds to step S87 and otherwise proceeds to step S89.

  Step S87: The CPU 91 supplies predetermined information to the video circuit 95 and displays a warning screen on the LCD 98.

  Step S88: The CPU 91 searches for another route with reference to the map information, and displays the obtained route on the LCD 98. FIG. 11 is a diagram showing an example of an image displayed on the LCD 98 at this time. In this example, “Warning!” Is displayed as the title 130 on the display unit 98 a of the LCD 98. Below that, as a message 131, “commuting routes are patterned. It is not desirable for crime prevention, so it is recommended that you take the following routes today” is displayed. Below that, information 132 related to the other route searched in step S88 is displayed.

  Step S89: The CPU 91 refers to the output of the GPS device 101 and the history information 94b to determine whether or not the vehicle has arrived at the destination. If it has arrived, the CPU 91 ends the processing. Returning to step S83, the same processing is repeated. At this time, the CPU 91 generates history information and stores it in the EEPROM 94.

  According to the above-described embodiment, the check of the passage route is started as a result of the start of movement in a predetermined time zone, and the road that has been passed a predetermined number of times in a predetermined period in the past is passed. If so, a warning is issued, so a route that considers crime prevention can be selected.

  In the embodiment described above, a warning is issued when the user has traveled on a road that has traveled a predetermined number of times in a certain period in the past. An image indicating a warning may be displayed on the LCD 98 if it is previously registered in the map information 14a and it turns out that the road belonging to the area is passing.

  FIG. 12 is a diagram showing an example of an image displayed on the LCD 98 at this time. In this example, “WARNING!” Is displayed as the title 140 at the top of the display unit 98 a of the LCD 98. Below that is a message 141 “Currently passing in the danger area. Change the route or pass quickly. In the unlikely event, if you operate the button on the side of the main body, Will be contacted to the registered contact. "Is displayed. In order to deal with the latter half of the message 141, an emergency contact is registered in the EEPROM 14, and when a predetermined button of the input device 99 is operated, a call is made to the emergency contact and a voice input is made. A warning sound may be generated from the output device 102.

  In the above embodiment, the map information 94a and the history information 94b are stored in the EEPROM 94. However, for example, the map information 94a and the history information 94b are stored on the base station 120 side and downloaded via the communication device 100. It is also possible to do.

  In the above embodiment, an example in which the user commutes to work is shown on foot. However, the present invention can also be applied to a route search including public transportation. For example, as shown in FIG. 13, a route is set so as not to be patterned from the current location to the nearest station (or accessible station). In addition, a route is set from the nearest station to the nearest destination station (or accessible station) so that movement in the shortest time is possible without considering patterning. Then, a route is set so as not to be patterned from the nearest station to the destination.

  Here, “accessible station” refers to a station other than the nearest station that can be reached within a predetermined time from the current location. Thus, by adding other stations other than the nearest station (that is, accessible stations) to the options, it is possible to prevent the route from the current position to the station and the route from the station to the destination from being patterned. Specifically, for example, when “Shinjuku Station” is the nearest station, when it is possible to reach “Nishi Shinjuku Station” within a predetermined time, by adding Nishi Shinjuku Station to the options, Compared to the case where only Shinjuku Station is an option, it is possible to more reliably prevent route patterning.

  According to such an embodiment, since the current location to the station where the patterning needs to be prevented and the station to the destination are not patterned as compared with the history information, a safe route is ensured. For public transportation systems that do not need to consider patterning, it is possible to select a travel route in the shortest time.

  Note that when performing a search including public transportation, the user may input a desired arrival time at the destination, and the route may be searched so as to arrive at the destination by the time. In addition, the user may be allowed to input an upper limit of the cost (public transportation fare) until arrival at the destination, and the search may be performed so that the user can arrive within the range of the cost.

  Further, in the above embodiment, when a plurality of routes remain as candidates, the user is selected or a predetermined route is selected by random numbers. For example, as shown in FIG. May be displayed on the LCD 18 and a route corresponding to the number when the roulette stops according to the timing of the user's operation may be selected.

  In the display example of FIG. 14, an image 150 indicating roulette is displayed on the display unit 18 a of the LCD 18. When a route is selected by such a roulette, the rotation of the roulette is started by operating the button 99a, and the rotation of the roulette is stopped by operating the button 99b. Then, when the rotation of the roulette stops, the route corresponding to the number located at the portion indicated by the arrow is selected.

  Further, in the above embodiment, the description has been made with a focus on changing the route. However, shifting the time zone passing through the route can also be a security measure. For example, the same route is set in the same time zone. If the passage continues several times, an image as shown in FIG. 15 may be displayed on the LCD 98 to prompt the user to shift the time. In this display example, “Warning!” Is displayed as the title 160 on the display unit 18a of the LCD 18, and a message 161 is displayed underneath it “I am going through the same route at the same time as yesterday. There is a store nearby, so why not come home after a short break? " In addition, an advertisement 162 of a XX store that sells brand-name products is displayed at the bottom.

  When referring to such an image and stopping at the store of the advertisement, operating the button 99c displayed below the LCD 18 starts the route guidance to the store. When such an advertisement is referred to, a service provider that provides a mobile phone communication service may charge a fixed amount to the advertiser XX store.

  The above-described embodiment is a preferred example of the present invention, but the present invention is not limited to these, and various modifications and changes can be made without departing from the scope of the present invention. is there.

  For example, in each of the above-described embodiments, commuting or commuting has been described as an example. However, for example, the present invention may be applied to hospital visits or visits, pick-ups to nurseries, shopping, etc. Is possible.

  Further, in each of the above embodiments, whether or not the route is uniformly determined by the number of times of traffic regardless of the type of road, for example, one-way roads and side roads are trunk roads. Since the crime rate is considered to be higher than that, priority may be given according to the type of road, and road links may be selected according to the priority. In that case, a route search may be performed with reference to the “other” information shown in FIG.

  It is also possible to perform a route search in consideration of the weather of the day. That is, since a psychology of arriving at the destination as soon as possible works on a rainy day, the route may be selected so that the distance to the destination is shortened when searching for the route.

  In each of the above embodiments, the input device 19 has been described by taking a touch panel as an example. However, a remote controller may be used instead of the touch panel.

  The above processing functions are realized by a computer as shown in FIG. 1, for example. In that case, a program describing the processing contents of the functions that the navigation apparatus should have is provided. By executing the program on the computer, the processing function is realized on the computer. The program describing the processing contents can be recorded on a computer-readable recording medium. Examples of the computer-readable recording medium include a magnetic recording device, an optical disk, a magneto-optical recording medium, and a semiconductor memory. Examples of the magnetic recording device include a hard disk device (HDD), a flexible disk (FD), and a magnetic tape. Optical discs include DVD, DVD-RAM, CD-ROM, CD-R (Recordable) / RW (Rewritable), and the like. Magneto-optical recording media include MO (Magneto-Optical disk).

  When distributing the program, for example, portable recording media such as a DVD and a CD-ROM in which the program is recorded are sold. It is also possible to store the program in a storage device of a server computer and transfer the program from the server computer to another computer via a network.

  The computer that executes the program stores, for example, the program recorded on the portable recording medium or the program transferred from the server computer in its own storage device. Then, the computer reads the program from its own storage device and executes processing according to the program. The computer can also read the program directly from the portable recording medium and execute processing according to the program. In addition, each time the program is transferred from the server computer, the computer can sequentially execute processing according to the received program.

  The present invention can be used in a navigation device that performs destination search.

It is a block diagram which shows the structural example of the navigation apparatus which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating an example of the screen displayed on LCD of embodiment shown in FIG. It is a flowchart for demonstrating operation | movement of the navigation apparatus based on 1st Embodiment shown in FIG. It is a figure which shows an example of the image displayed when the process of the flowchart shown in FIG. 3 is started. It is a figure which shows an example of the log | history information shown in FIG. It is a figure which shows an example of the image displayed as a result of performing the process of the flowchart shown in FIG. It is another flowchart for demonstrating operation | movement of the navigation apparatus based on 1st Embodiment shown in FIG. It is another flowchart for demonstrating operation | movement of the navigation apparatus based on 1st Embodiment shown in FIG. It is a block diagram which shows the structural example of the navigation apparatus which concerns on the 2nd Embodiment of this invention. It is a flowchart for demonstrating operation | movement of the navigation apparatus based on the 2nd Embodiment of this invention. It is a figure which shows an example of the image displayed when the flowchart shown in FIG. 10 is performed. 10 is a display example of an image displayed on the navigation device according to the second embodiment shown in FIG. 9. It is a figure which shows an example of operation | movement of the navigation apparatus based on 2nd Embodiment shown in FIG. It is a figure which shows an example of operation | movement of the navigation apparatus based on 2nd Embodiment shown in FIG. It is a figure which shows an example of operation | movement of the navigation apparatus based on 2nd Embodiment shown in FIG.

Explanation of symbols

10 navigation device 11 CPU (search means)
14 HDD (storage means)
15 Video circuit (part of the presentation means)
18 LCD (part of presentation means)
19 Input device (input means)
90 navigation device 91 CPU (determination means)
94 EERPOM (memory means)
95 Video circuit (part of the presentation means)
98 LCD (part of presentation means)

Claims (13)

Storage means for storing information relating to routes traveled in the past;
With reference to the information stored in the storage means, when the substantially same route is passed within the same fixed time period in the past fixed period, so as to select a route different from the route , Search means for searching for a route to the destination;
Presenting means for presenting the route obtained by the search means;
A navigation device comprising: 2. The navigation apparatus according to claim 1, wherein the search means excludes a road link that has passed a predetermined number of times within a certain past period from search targets . The navigation device according to claim 2 , wherein the search means does not exclude road links near the destination from search targets . The search unit, when excluding the predetermined road link, if the arrival time at the destination is later than the predetermined time, according to claim 2, characterized in that not excluded from the search target for the link Navigation device. The search means, from a plurality of path group obtained as a result of the search, the route including a road link that is passing a predetermined number of times or more within the past predetermined period, according to claim 1, wherein a is not selected Navigation device. The navigation device according to claim 1, wherein the search means searches for a route passing through a predetermined area having a high crime occurrence rate so that the route changes more frequently than in other areas . It further has an input means for inputting a desired arrival time at the destination,
2. The navigation apparatus according to claim 1 , wherein the search means searches for a route that can reach the destination by a desired arrival time input via the input means . When there are a plurality of routes specified by the search means, a predetermined route is selected according to the timing of input from the user, or a predetermined route is selected according to a random number. The navigation device according to claim 1. The search means, the navigation apparatus according to claim 1, wherein the searching of routes including public transport and said enable der Rukoto. The search means can access the destination from the current location to the station or bus stop accessible from the current location, the route from the station or bus stop accessible to the destination to the destination, and the current location from the station or bus stop to the destination. The navigation device according to claim 9 , wherein each of the routes to the station or the bus stop can be searched . The search means, the navigation device according to claim 1, wherein that you search for a route in consideration of an arrival time or necessary transportation costs to the destination. An information presentation method used in a navigation device including at least a storage unit, a search unit, and a presentation unit,
Storing information about the route that the storage means has taken in the past,
In the case where the search means refers to the stored information and the substantially same route is passed within the same fixed time period in the past certain period, so as to select a route different from the route, Search the route to the destination,
The presenting means presents the route obtained by the search,
An information presentation method characterized by that. Storage means for storing information relating to routes taken in the past,
With reference to the information stored in the storage means, when the substantially same route is passed within the same fixed time period in the past fixed period, so as to select a route different from the route, Search means for searching for a route to the destination,
Presenting means for presenting the route obtained by the search means;
  A computer-readable navigation program that causes a computer to function as a computer.

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