JP2011058899A - Navigation device, control method, program, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device restricting presentation of a new guiding route in a certain case when a user runs in an area where the user knows the road conditions well. <P>SOLUTION: A determination means determines whether the vehicle is running on a road known to the user. A mode setting means sets an output mode at a known-road-driving mode when the determination means determines that the vehicle is running on the known road. A reroute presentation means re-searches a guiding route based on congestion information, and represents information of the new guiding route when the new guiding route obtained by the re-searching satisfies a first condition. A reroute presentation limit means restricts presentation of information of the new guiding route which does not satisfies a second condition whose reference is higher than that of the first condition, when the determination means determines that the vehicle is running on the known road. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technology for controlling information presentation to a user by a navigation device.

  Conventionally, there is a technology for re-searching and presenting a new route to avoid a traffic jam when it is detected that a route is scheduled during route guidance. For example, Patent Document 1 describes a navigation device that performs a route search again in order to avoid a traffic jam when a traffic jam is detected based on VICS (Vehicle Information Communication System) information. In addition, the navigation device of Patent Literature 1 displays the re-searched guidance route on the display screen and displays a pop-up screen indicating the reason for the re-search.

JP 2008-139081 A

  On the other hand, when driving in an area such as the vicinity of a home where the road condition is well known, the presentation of a new guidance route may be unnecessary for the user. In addition, when the user wants to prioritize the AV (Audio Visual) function, or when the user knows a way to avoid traffic congestion even if the new guidance route is not presented, the user will be presented with an unnecessary guidance route. Will be annoying. The above problem is not studied at all in Patent Document 1.

  The present invention has been made to solve the above problems, and restricts the presentation of a new guidance route to a certain case when the user travels in an area where the user knows the road conditions well. An object is to provide a navigation device.

  The invention according to claim 1 is a navigation device installed in a vehicle, wherein a determination means for determining whether or not the vehicle is traveling on a known road of a user, and traveling on the known road A mode setting unit that sets the output mode to a known road driving mode when the determination unit determines that the vehicle is in the middle, and a route search is performed again based on the traffic jam information during route guidance, and the re-search is obtained. When the new guide route satisfies the first condition, the reroute presenting means for presenting information on the new guide route and the new condition that does not satisfy the second condition that is higher than the first condition in the known road driving mode. Reroute presentation restriction means for restricting the presentation of information on various guidance routes.

  The invention according to claim 7 is a control method executed by a navigation device installed in a vehicle, wherein a determination step of determining whether or not the vehicle is traveling on a known road of a user; A mode setting means for setting the output mode to a known road driving mode when the determining means determines that the vehicle is traveling on the known road; and re-searching the guidance route based on traffic jam information during route guidance; When the new guidance route obtained by re-searching satisfies the first condition, the re-route presenting step for presenting information on the new guidance route and the second that has a higher standard than the first condition in the known road driving mode. A reroute presentation restriction step of restricting presentation of information on the new guidance route that does not satisfy the condition.

  The invention according to claim 8 is a program that is mounted on and executed by a navigation device installed in a vehicle, and a determination unit that determines whether or not the vehicle is traveling on a known road of a user. A mode setting means for setting the output mode to a known road driving mode when the determination means determines that the vehicle is traveling on the known road; and re-searching the guidance route based on traffic jam information during route guidance; When the new guidance route obtained by the re-searching satisfies the first condition, the re-route presenting means for presenting information on the new guidance route and the known road travel mode have a higher standard than the first condition. The navigation apparatus is caused to function as a reroute presentation restriction unit that restricts presentation of information on the new guidance route that does not satisfy two conditions.

It is an example of schematic structure of the navigation apparatus concerning a present Example. It is an example of the functional block of the navigation apparatus which concerns on a present Example. It is an example of a display of the navigation apparatus concerning a present Example. It is an example of the flowchart which shows the process sequence of a present Example.

  In one aspect of the present invention, the navigation device is installed in a vehicle, and includes determination means for determining whether the vehicle is traveling on a known road of a user, and traveling on the known road. A mode setting unit that sets the output mode to a known road travel mode when the determination unit determines that the route is a new route obtained by re-searching the guidance route based on traffic jam information during route guidance. When a new guide route satisfies the first condition, the reroute presenting means for presenting information on the new guide route and the new condition that does not satisfy the second condition that is higher than the first condition in the known road driving mode. Reroute presentation restriction means for restricting the presentation of information on the guidance route.

  The navigation apparatus is installed in a vehicle and includes a determination unit, a mode setting unit, a reroute presentation unit, and a reroute presentation restriction unit. Here, the navigation device includes a portable navigation device such as a PND (Personal Navigation Device) in addition to a stationary navigation device. The determination means determines whether or not the vehicle is traveling on a known road of the user. Here, for example, the determination means may determine whether the road is a known road based on an explicit input from the user, or the surrounding road automatically based on a registration point set in advance by the user. May be determined as a known road. In addition, the “known road” means that the user points to a desired point regardless of a navigation function such as voice guidance or route guidance on the screen, or regardless of a map display around the current location presented by the navigation device. A road (route) that can be driven. The “user” includes a vehicle occupant as well as a vehicle driver. The mode setting means sets the output mode to the known road traveling mode when the determination means determines that the vehicle is traveling on a known road. The reroute presenting means obtains traffic jam information based on, for example, VICS information distributed from the VICS center. Then, the reroute presentation means performs a re-search for the guidance route based on the traffic jam information, and presents information on the new guidance route when the new guidance route obtained by the re-search satisfies the first condition. Here, the “first condition” refers to a condition set based on a determination factor when selecting a guide route, such as a required time, a fee, and a distance to a set destination. For example, the reroute presenting means determines that the first condition is satisfied when either the fee or the required time is improved over the guidance route during route guidance. Further, the reroute presentation means may present information such as the required time and fee of a new guidance route in comparison with the guidance route during route guidance. The reroute presentation restriction unit restricts presentation of information on the new guidance route that does not satisfy the second condition, which is higher than the first condition, in the known road travel mode. Here, the “second condition” is a condition set based on the determination factors when selecting a guidance route, such as a required time, a fee, a distance to the set destination, and the like. Also refers to severe conditions. In this way, the navigation device presents a new guidance route only when there is a merit to the user or when the merit is great while traveling on a known road. Thereby, the navigation apparatus can output more suitable for the user's intention, and can improve the convenience for the user.

  In one aspect of the above navigation device, the reroute presenting means has the first condition, when the time required for the new guidance route is shorter than the guidance route during route guidance, and the fee required for traveling If it is one of the cheaper cases, information on the new guidance route is presented, and the reroute presentation restricting means is the second condition in the known road driving mode, than the guidance route during route guidance. However, when the time required for the new guide route is shorter than a predetermined time difference and when the charge required for traveling is lower than the predetermined fee difference, presentation of information on the new guide route is restricted. That is, in this case, the first condition is that the time required for the new guidance route is shorter than the guidance route that is being route-guided, or that the fee required for traveling is low, and the second condition is that the route guidance is being conducted. The time required for the new guidance route is shorter than the predetermined time difference by a predetermined time difference or less than the predetermined fee difference. The predetermined time difference and the predetermined charge difference are set based on an input from a user or an experiment in advance. By doing in this way, the navigation apparatus can present a new guidance route only when there is a merit to the user or when the merit is large while traveling on a known road.

  In another aspect of the navigation device, the second condition is set based on an external input. Here, “external input” refers to input based on the operation of the user of the navigation device. By doing in this way, the navigation apparatus can limit presentation of information on a new guidance route while traveling on a known road based on the user's intention.

  In another aspect of the above navigation device, the determination unit determines that a road in an area designated based on an external input is the known road. In this way, the navigation device can accurately determine whether or not the road is known to the user.

  In another aspect of the navigation device, the determination unit determines that a road that is within a predetermined distance from a preset registration point based on an external input is the known road. “Registered spot” is not limited to a spot registered for determining whether the road is a known road, but also includes a spot registered for easily setting a destination in route guidance, for example. . Further, the above-mentioned predetermined distance is set to an appropriate value in advance based on, for example, an experiment and stored in the memory of the navigation device. By doing in this way, the navigation device can accurately determine whether or not the road is a known road without a setting or operation by the user for determining whether or not the road is a known road. it can.

  In another aspect of the navigation device, the determination unit determines whether the road is a known road based on a travel history of the vehicle. Also by this, the navigation apparatus can accurately determine whether the road is a known road without causing the user to perform setting or operation for determining whether the road is a known road.

  In another aspect of the present invention, there is provided a control method executed by a navigation device installed in a vehicle, the determination step for determining whether or not the vehicle is traveling on a known road of a user, A mode setting step for setting the output mode to a known road traveling mode when the determination step determines that the vehicle is traveling on a known road, and a re-search for a guidance route based on traffic jam information during route guidance, When the new guide route obtained by the search satisfies the first condition, the re-route presenting step for presenting information on the new guide route and the second condition having a higher standard than the first condition in the known road driving mode A reroute presentation restriction step of restricting presentation of information on the new guidance route that does not satisfy By using this control method, the navigation device presents a new guidance route only when there is a merit to the user or when the merit is great while traveling on a known road. Thereby, the navigation apparatus can output more suitable for the user's intention, and can improve the convenience for the user.

  In still another aspect of the present invention, there is provided a program that is installed and executed in a navigation device installed in a vehicle, and a determination unit that determines whether or not the vehicle is traveling on a known road of a user. A mode setting means for setting the output mode to a known road driving mode when the determination means determines that the vehicle is traveling on the known road; and re-searching the guidance route based on traffic jam information during route guidance; When the new guidance route obtained by the re-searching satisfies the first condition, the re-route presenting means for presenting information on the new guidance route and the known road travel mode have a higher standard than the first condition. The navigation device is caused to function as reroute presentation restriction means for restricting presentation of information on the new guidance route that does not satisfy the two conditions. By executing this program, the navigation device presents a new guidance route only when there is a merit to the user or when the merit is great while traveling on a known road. Thereby, the navigation apparatus can output more suitable for the user's intention, and can improve the convenience for the user. Preferably, the above program is stored in a storage medium.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Hereinafter, after describing a schematic configuration of the navigation device according to the present invention, a control method executed by the navigation device, a display example associated therewith, and a processing flow will be described in order. Furthermore, each modification related to the present embodiment will be described later.

[Schematic configuration]
FIG. 1 shows a schematic configuration of the navigation apparatus 1. As shown in FIG. 1, the navigation device 1 includes a self-supporting positioning device 10, a GPS receiver 18, a system controller 20, a disk drive 31, a data storage unit 36, a communication interface 37, a communication device 38, a display unit 40, an audio output. A unit 50 and an input device 60 are provided.

  The autonomous positioning device 10 includes an acceleration sensor 11, an angular velocity sensor 12, and a distance sensor 13. The acceleration sensor 11 is made of, for example, a piezoelectric element, detects vehicle acceleration, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle when the direction of the vehicle is changed, and outputs angular velocity data and relative azimuth data. The distance sensor 13 measures a vehicle speed pulse composed of a pulse signal generated with the rotation of the vehicle wheel.

  The GPS receiver 18 receives radio waves 19 carrying downlink data including positioning data from a plurality of GPS satellites. The positioning data is used to detect the absolute position of the vehicle (hereinafter also referred to as “current location”) from latitude and longitude information.

  The system controller 20 includes an interface 21, a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23, and a RAM (Random Access Memory) 24, and controls the entire navigation apparatus 1.

  The interface 21 performs an interface operation with the acceleration sensor 11, the angular velocity sensor 12, the distance sensor 13, and the GPS receiver 18. From these, vehicle speed pulses, acceleration data, relative azimuth data, angular velocity data, GPS positioning data, absolute azimuth data, and the like are input to the system controller 20. The CPU 22 controls the entire system controller 20. The ROM 23 includes a nonvolatile memory (not shown) in which a control program for controlling the system controller 20 is stored. The RAM 24 stores various data such as route data preset by the user via the input device 60 so as to be readable, and provides a working area to the CPU 22. The specific processing executed by each element of the system controller 20 will be described in detail in the section [Control Method] described later.

  A system controller 20, a disk drive 31 such as a CD-ROM drive or a DVD-ROM drive, a data storage unit 36, a communication interface 37, a display unit 40, an audio output unit 50, and an input device 60 are mutually connected via a bus line 30. It is connected to the.

  The disk drive 31 reads and outputs content data such as music data and video data from a disk 33 such as a CD or DVD under the control of the system controller 20. The disk drive 31 may be either a CD-ROM drive or a DVD-ROM drive, or may be a CD and DVD compatible drive. The data storage unit 36 is configured by, for example, an HDD and stores various data used for navigation processing such as map data. The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and is distributed from a VICS center or a server that accumulates and manages the travel history of each vehicle and provides traffic information. Congestion information (hereinafter referred to as “congestion information Id”) and other traffic information are acquired from the radio wave 39. The interface 37 performs the interface operation of the communication device 38 and inputs the traffic jam information Id to the system controller 20 or the like.

  The display unit 40 displays various display data on a display device such as a display under the control of the system controller 20. Specifically, the system controller 20 reads map data from the data storage unit 36. The display unit 40 displays the map data read from the data storage unit 36 by the system controller 20 on the display screen. The display unit 40 includes a graphic controller 41 that controls the entire display unit 40 based on control data sent from the CPU 22 via the bus line 30 and a memory such as a VRAM (Video RAM), and can display image information that can be displayed immediately. A buffer memory 42 that temporarily stores, a display control unit 43 that controls display of a display 44 such as a liquid crystal display or a CRT (Cathode Ray Tube) based on image data output from the graphic controller 41, and a display 44 are provided. . The display 44 functions as an image display unit, and includes, for example, a liquid crystal display device having a diagonal size of about 5 to 10 inches and is mounted near the front panel in the vehicle.

  The audio output unit 50 performs D / A (Digital to Analog) conversion of audio digital data sent from the CD-ROM drive 31, DVD-ROM 32, RAM 24, or the like via the bus line 30 under the control of the system controller 20. A D / A converter 51 to perform, an amplifier (AMP) 52 that amplifies the audio analog signal output from the D / A converter 51, and a speaker 53 that converts the amplified audio analog signal into sound and outputs the sound into the vehicle. It is prepared for.

  The input device 60 includes keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is disposed around the front panel and the display 44 of the main body of the in-vehicle electronic system mounted in the vehicle. When the display 44 is a touch panel system, the touch panel provided on the display screen of the display 44 also functions as the input device 60.

  Note that the system controller 20 in FIG. 1 corresponds to determination means, mode setting means, reroute presentation means, and reroute presentation restriction means in the present invention.

  In the following description, the vehicle on which the navigation device 1 is mounted is referred to as “mounted vehicle”. Further, the “user” includes not only the driver of the mounted vehicle but also an occupant of the mounted vehicle. Further, the “destination” refers to a destination set by the user in the navigation device 1, and the “stop-by” refers to a point set as a point where the user stops in the middle of the destination. If the destination and the stopover are not particularly distinguished, they are called “destination etc.”. Further, the “guidance route” refers to a route that the navigation apparatus 1 guides (guides) the user to the destination or the like when the destination or the like is set. The “original route” refers to a guidance route that has already been set when a route re-search (reroute search) based on the traffic jam information Id is executed, and a “new route” is newly added by the reroute search. Refers to the guidance route presented to the user.

[Control method]
Next, processing executed by the system controller 20 will be described. Schematically, the system controller 20 determines the information about the new route (hereinafter referred to as “reroute search”) when the on-vehicle vehicle travels on a road already known by the user (hereinafter also referred to simply as “known road”). , Called “reroute information”). In this way, the system controller 20 presents only reroute information useful for the user when traveling on a known road, and improves convenience.

  This process will be specifically described with reference to FIG. FIG. 2 is an example of a diagram illustrating functional blocks of the system controller 20. As illustrated in FIG. 2, the system controller 20 includes a mode determination unit 20x, a reroute presentation restriction unit 20y, and a reroute presentation unit 20z. Hereinafter, processing executed by each of these elements will be described. In the following description, it is assumed that the navigation apparatus 1 has already received a setting of a predetermined destination or the like by the user and has started route guidance.

  First, the process performed by the mode determination unit 20x will be described. Based on a user input from the input device 60, the mode determination unit 20x determines whether or not the mounted vehicle is traveling on a known road, and the audio output and screen output performed by the navigation device 1 according to the determination result. A method (hereinafter simply referred to as “output mode”) is determined. Hereinafter, the output mode applied when the mounted vehicle is traveling on a known road is referred to as “known road travel mode”, and the output method in other cases is referred to as “normal mode”. The known road travel mode is an output mode in which a function executed by a reroute presentation restriction unit 20y described later is added to the function of the normal mode. Then, the mode determination unit 20x supplies information (hereinafter, simply referred to as “mode information”) indicating whether the output mode is the known road traveling mode or the normal mode to the reroute presentation restriction unit 20y.

  Here, a supplementary explanation will be given using a specific example for a method of determining whether or not the vehicle is traveling on a known road based on the user's input. For example, the mode determination unit 20x receives an instruction from the user via the input device 60 that instructs the output mode to be the known road traveling mode or the normal mode. In another example, the mode determination unit 20x causes the input device 60 to specify a known road or an area including a known road in advance from the user. For example, the mode determination unit 20x displays a map around the user's home or a registered location so that the user can specify a known road or an area including a known road, and the input information is stored in the data storage unit 36. Remember it. Thereafter, the mode determination unit 20x includes a known road designated by the user or an area including the known road (hereinafter collectively referred to as “designated area”), and current location information supplied from the GPS receiver 18. Based on the above, it is determined whether or not the mounted vehicle is traveling on a known road. When the mode determination unit 20x determines that the mounted vehicle is in the designated area, the mode determination unit 20x sets the output mode to the known road travel mode. On the other hand, when the mode determination unit 20x determines that the mounted vehicle is not in the designated area, the mode is set to the normal mode.

  Next, for convenience of explanation, a process executed by the reroute presentation unit 20z prior to the reroute presentation restriction unit 20y will be described. Based on the traffic jam information Id supplied from the interface 37, the reroute presentation unit 20z determines whether there is traffic on the guidance route. When it is determined that there is a traffic jam, the reroute presentation restriction unit 20y determines one or more new routes that can avoid the traffic jam based on the traffic jam information Id by a reroute search. The reroute presentation restriction unit 20y is used when the new route obtained by the reroute search satisfies a predetermined condition (hereinafter referred to as "first condition") and there is no restriction by the reroute presentation restriction unit 20y. Presents the new route information to the user and selects the old route and the new route. Here, the “first condition” is a condition for determining whether or not to present information on a new route, and should be satisfied in both the normal mode and the known road driving mode. Refers to a condition. The first condition is set in advance to an appropriate value based on, for example, an experiment, and is stored in a memory such as the data storage unit 36.

  Specifically, the first condition is a distance to a destination or the like (hereinafter referred to as “arrival distance D”), a required time width to the destination or the like (hereinafter referred to as “required time T”), The new route and the old route in the determination element (hereinafter simply referred to as “route determination element”) such as a fee required to reach the destination (hereinafter referred to as “charge F”) It is determined based on the comparison result. As an example, in the following description, the reroute presentation unit 20z determines that the required time T for the new route is shorter than the required time T for the old route, or the fee F for the new route is lower than the fee F for the old route. It is determined that the first condition is satisfied.

  And when the 1st condition is satisfy | filled, the reroute presentation part 20z shows the comparison result of a new route and an old route to a user by the display unit 40 and the audio | voice output unit 50. FIG. Then, the reroute presentation unit 20z causes the user to select either a new route or an old route as a guide route to be set thereafter. This process will be described in detail in the [Display Example] section described later.

  Next, processing executed by the reroute presentation restriction unit 20y will be described. The reroute presentation restriction unit 20y restricts the presentation of reroute information by the reroute presentation unit 20z in a fixed case when the output mode is the known road travel mode. Specifically, when the output mode is the known road travel mode, the reroute presentation restriction unit 20y presents reroute information that does not satisfy a predetermined condition (hereinafter referred to as “second condition”) that is stricter than the first condition. Suppress. In other words, when the output mode is the known road travel mode, the reroute presentation restriction unit 20y causes the reroute presentation unit 20z to present to the user only the reroute information related to the new route that satisfies the second condition. The second condition is set in advance as an appropriate condition based on, for example, an experiment, and is stored in a memory such as the data storage unit 36.

  Here, the second condition will be described in more detail. As described above, the second condition is set to a higher reference than the first condition. Specifically, the second condition is higher than the first condition by increasing the conditions of each route determination element used for the first condition and / or setting more route determination elements to be satisfied. Set to Here, as an example, the second condition is that the required time T of the new route is shorter than the required time T of the old route by a predetermined threshold (hereinafter referred to as “threshold value Tth”) or the fee for the new route It is assumed that F is set to a condition that requires that either the price F of the old route is cheaper than a predetermined threshold (hereinafter referred to as “threshold Fth”). That is, in the second condition, the threshold value Tth and the threshold value Fth which are higher standards than the respective criteria of the first condition are set. The threshold value Tth and the threshold value Fth described above are set to appropriate values in advance based on, for example, experiments, and are held in a memory such as the data storage unit 36.

  By doing as described above, the reroute presentation restriction unit 20y suppresses the presentation of unnecessary reroute information in an area already known by the user while traveling on a known road, and the user's merit is great The reroute information can be presented to the user only in the above case.

  This will be supplementarily described. In an area where the road conditions are well understood, it is estimated that the user knows the road without presenting a road that avoids traffic. Also, by presenting reroute information, there is a possibility that the information screen (AV screen) related to the AV being played is switched or the music being played is muted or the volume is reduced against the intention of the user. On the other hand, if the reroute presentation restriction unit 20y suppresses the presentation of the reroute information uniformly in an area where the road information is well understood instead of the description of the above-described embodiment, the reroute presentation restriction unit 20y may be closed due to an accident or a large traffic jam. When it occurs, there is no way to tell the user to that effect. In consideration of the above, the reroute presentation restriction unit 20y raises the reroute information presentation condition when the output mode is the known road travel mode. Thereby, the reroute presentation restriction unit 20y suppresses the presentation of unnecessary reroute information, and the presentation of the reroute information has a merit for the user, such as when a heavy traffic jam occurs due to a sudden traffic jam based on an accident or the like. Can present reroute information.

[Display example]
Next, a display screen output by the display unit 40 in this embodiment will be described with reference to FIG. In the following description, it is assumed that the navigation device 1 receives an input by a touch panel method as an example.

  FIG. 3A shows a display example output during route guidance. The display example in FIG. 3A includes a screen display unit 70 and a button 71. Further, the screen display unit 70 includes a button 72, an information display unit 73, a current location display 90, and a guidance route 91.

  The button 71 is a button provided on the frame of the navigation device 1 and accepts various inputs when pressed by the user. The button 72 is a button provided on the screen display unit 70, and accepts various inputs based on a user's pressing by a touch panel method. The information display unit 73 is a display area that presents various information necessary or useful for driving by the user. In FIG. 3A, the information display unit 73 displays information on the current time, the distance to the destination, the estimated arrival time, the intersection to be bent next, or the intersection to be bent next. The current location display 90 is an icon indicating the current location of the mounted vehicle on the displayed map. A guide route 91 indicates a route that the navigation apparatus 1 guides (guides) before reaching a destination or the like. Even during the route guidance, the screen display unit 70 may display an AV screen or the like instead of the screen display shown in FIG.

  FIG. 3B shows a display example when reroute information is presented. In FIG. 3B, the screen display unit 70 displays the old route 91 x as a guidance route 91 with a solid line and the new route 91 y with a broken line. Furthermore, the screen display unit 70 includes a branch information display unit 74, a distance display unit 75, a required time display unit 76, and a fee display unit 77 on the right side. The branch information display unit 74 is a display area that indicates a travel distance to a point where the old route 91x and the new route 91y branch. The distance display section 75 is a display area that shows a comparison result of the old route 91x and the new route 91y (hereinafter also simply referred to as “new and old route”) related to the arrival distance D. Here, the distance display unit 75 displays that the new route 91y is 1.2 km shorter than the old route 91x. The required time display section 76 is a display area that shows a comparison result of the new and old routes with respect to the required time T. Here, the required time display unit 76 displays that the new route 91y has the required time T shortened by 35 minutes compared to the old route 91x. The charge display portion 77 is a display area that shows a comparison result of the old and new routes related to the charge F. Here, the charge display unit 77 displays that the new route 91y is increased by 200 yen over the old route 91x.

  The screen display unit 70 displays the title of the display screen on the upper side and includes a window 92 on the lower side. The window 92 includes a new route selection button 93 for selecting a new route 91y and an old route selection button 94 for selecting an old route 91x. Furthermore, the window 92 is displayed when either the new route selection button 93 or the old route selection button 94 is not pressed until a certain condition (here, traveling for 500 m) is satisfied (here, the original route selection button 94). Is displayed as having been selected.

  When the screen display shown in FIG. 3B is executed, the system controller 20 synchronizes with this, indicating that there is a traffic jam, the content displayed by the screen display unit 70, and / or the user. The voice output unit 50 may execute voice output indicating that either the route selection button 93 or the old route selection button 94 should be pressed arbitrarily.

  Next, when the system controller 20 performs a reroute search during the display of FIG. 3A, and the comparison result of the required time T and the charge F of the old and new routes shown in FIG. Display control executed by the system controller 20 will be described.

  First, the case where the output mode is the normal mode will be described. In the example of FIG. 3B, since the required time T is shortened in the new and old routes, the required time T of the new route 91y is shortened from the required time T of the old route 91x or the fee F of the new route 91y. Satisfying the first condition on the condition that the price is reduced from the charge F of the old route 91x. Therefore, when the output mode is the normal mode, the system controller 20 switches from the display in FIG. 3A to the display in FIG. That is, the system controller 20 presents reroute information.

  Next, the case where the output mode is the known road traveling mode will be described. First, when the threshold value Tth is set to 35 minutes or less, in the example of FIG. 3B, the required time T is shorter than the threshold value Tth (35 minutes). Accordingly, in this case, the required time T of the new route 91y is shorter than the required time T of the old route 91x by a threshold value Tth or the fee F of the new route 91y is cheaper than the threshold value Fth of the old route 91x. The second condition that satisfies any one of the conditions is satisfied. Therefore, in this case, the system controller 20 switches from the display of FIG. 3A to the display of FIG. 3B even when the output mode is the known road travel mode. That is, the system controller 20 presents reroute information. Thereby, the system controller 20 can present reroute information having a great merit to the user to the user.

  On the other hand, when the threshold value Tth is set to a value larger than 35 minutes, in the example of FIG. 3B, the required time T of the new route 91y is not shorter than the threshold value Tth and shorter than the old route 91x, The fee F of the new route 91y is not cheaper than the old route 91x over the threshold Fth. Therefore, the second condition is not satisfied in the example of FIG. Therefore, the system controller 20 continues the display of FIG. 3A and does not present reroute information. Thereby, the system controller 20 can suppress the presentation of unnecessary reroute information in an area already known by the user while traveling on a known road.

[Processing flow]
Next, a processing procedure executed by the system controller 20 in this embodiment will be described with reference to FIG. FIG. 4 is an example of a flowchart showing a processing procedure executed by the system controller 20 in this embodiment. The system controller 20 repeatedly executes the processing of the flowchart shown in FIG. 4 according to a predetermined cycle.

  First, the system controller 20 determines whether or not a traffic jam has occurred in the guidance route (step S101). Specifically, the system controller 20 determines whether or not a traffic jam has occurred in the guidance route based on the traffic jam information Id supplied from the interface 37.

  When traffic jam occurs in the guidance route (step S101; Yes), the system controller 20 searches for a route to avoid the traffic jam (step S102). As a result, the system controller 20 searches for a new route that can avoid traffic congestion on routes other than the old route. Here, it is assumed that the system controller 20 has searched for a new route that satisfies the first condition.

  On the other hand, when there is no traffic jam in the guidance route (step S101; No), the system controller 20 ends the process of the flowchart.

  Next, the system controller 20 determines whether or not the output mode is a known road travel mode (step S103). Thereby, the system controller 20 determines whether or not the mounted vehicle is traveling on a known road.

  If the output mode is the known road travel mode (step S103; Yes), the system controller 20 further determines in step S104 and / or step S105 whether the new route satisfies the second condition.

  Specifically, first, the system controller 20 determines whether or not the new route has a required time T shorter than the old route by a threshold value Tth (step S104). When the required time T is shorter than the old route by the threshold Tth or more (step S104; Yes), the system controller 20 determines that the new route satisfies the second condition, and displays the comparison result of the new and old routes on the screen. It is displayed (step S106). Thereby, the system controller 20 can present useful reroute information to the user.

  On the other hand, when the required time T does not become shorter than the old route for the new route by the threshold Tth (step S104; No), the system controller 20 next determines whether the fee F is lower than the old route by the threshold Fth or less. (Step S105). If the new route is lower than the old route by the threshold Fth and the charge F is lower (step S105; Yes), the system controller 20 determines that the new route satisfies the second condition, and displays the comparison result of the new and old routes on the screen. (Step S106). Thereby, the system controller 20 can present useful reroute information to the user. On the other hand, when the fee F is not lower than the old route by the threshold Fth or more than the old route (step S105; No), the system controller 20 ends the process of the flowchart. That is, in this case, since the system controller 20 is traveling on a known road and there are few merits by presenting reroute information, it is better to maintain the current screen output and audio output in accordance with the user's intention. Judge that Thereby, the system controller 20 can present only reroute information useful for the user and can suppress the presentation of unnecessary reroute information.

  On the other hand, when the output mode is not the known road traveling mode (step S103; No), the system controller 20 determines that the vehicle is not traveling on the known road and displays it on the screen regardless of whether or not the second condition is satisfied. The comparison result of the new and old routes is displayed (step S106). As described above, when the system controller 20 is not traveling on a known road, the system controller 20 can present a new route that can actively avoid a traffic jam to the user, and can support driving.

  After execution of step S106, the system controller 20 determines whether a new route has been selected (step S107). When the new route is selected (step S107; Yes), the system controller 20 switches the guidance route to the new route (step S108). On the other hand, when the new route is not selected (step S107; No), the system controller 20 ends the process of the flowchart and continues to perform route guidance using the currently set guidance route (old route).

  As described above, the navigation device according to the present embodiment is installed in a vehicle and includes a determination unit, a mode setting unit, a reroute presentation unit, and a reroute presentation restriction unit. The determination means determines whether or not the vehicle is traveling on a known road of the user. The mode setting means sets the output mode to the known road traveling mode when the determining means determines that the vehicle is traveling on the known road. The reroute presenting means obtains traffic jam information based on, for example, VICS information distributed from the VICS center. Then, the reroute presentation means performs a re-search for the guidance route based on the traffic jam information, and presents information on the new guidance route when the new guidance route obtained by the re-search satisfies the first condition. In the known road travel mode, the reroute presentation restriction unit restricts presentation of information on a new guidance route that does not satisfy the second condition that is higher than the first condition. In this way, the navigation device presents a new guidance route only when there is a merit to the user or when the merit is great while traveling on a known road. Thereby, the navigation apparatus can output more suitable for the user's intention, and can improve the convenience for the user.

[Modification]
Hereafter, each modification of a present Example is demonstrated. Each of these modified examples can be applied to the above-described embodiments in any combination.

(Modification 1)
In addition to the description of FIG. 2, the system controller 20 may allow the user to set the first condition or / and the second condition via the input device 60. Specifically, the user can arbitrarily select the route determination element used for the first condition and / or the second condition, and can arbitrarily set each threshold of the route determination element such as the threshold Tth and the threshold Fth. Good. Even in this case, the system controller 20 sets the second condition criterion higher than the first condition.

  By doing in this way, the system controller 20 can present the route information more suitable for the user's intention depending on whether or not the output mode is the known road traveling mode.

(Modification 2)
In the description of FIGS. 2 and 3, the required time T and the fee F are used as route determination elements of the first condition and the second condition. However, route determination elements to which the present invention can be applied are not limited to these.

  Instead of this, or in addition to this, the system controller 20 may use, as a route determination element, various pieces of information that can be acquired, such as fuel efficiency, carbon dioxide emission, and risk level.

  When the fuel consumption or carbon dioxide emission is used as a route determination element, the system controller 20 refers to a predetermined formula or map based on the arrival distance D or / and the required time T, for example, and the fuel consumption or carbon dioxide emission of the old and new routes. Predict. Further, when the degree of risk is used as a route determination element, the system controller 20 holds, for example, a map in which the data storage unit 36 holds information such as the number of past traffic accidents, the number of lanes, and the presence / absence of a curve with a large curvature in the old and new routes. Obtained from data or distribution information received from a predetermined server via the communication device 38, and based on these information, the degree of risk is digitized or classified by referring to a predetermined map or expression. These maps or formulas are created in advance based on experiments or the like, and are stored in a memory such as the data storage unit 36.

  Then, the system controller 20 sets a predetermined threshold for each of these route determination elements as necessary, and sets the second condition more strictly than the first condition. Here, the above-described threshold value may be set in advance to an appropriate value based on an experiment or the like, or may be set by the user based on an external input as described in (Modification 1).

  As described above, the present invention can be suitably applied even when the first condition and the second condition are set using various route determination elements.

(Modification 3)
In the description of FIG. 2, the mode determination unit 20x determines the output mode based on the input from the user, that is, based on the selection of the output mode by the user or / and the designated area input by the user. However, the method to which the present invention is applicable is not limited to this. Instead of this or in addition to this, the mode determination unit 20x may automatically determine the output mode regardless of the input from these users.

  This will be specifically described. For example, the mode determination unit 20x may regard a registered point set in advance by the user for the purpose of simple setting of a destination or the like and a road existing in the vicinity thereof as a known road. In this case, for example, the mode determination unit 20x automatically sets the output mode to the known road traveling mode within a predetermined distance from the registered point, and sets the output mode to the normal mode at a place away from the registered point by a predetermined distance. The predetermined distance is set to an appropriate value based on experiments or the like.

  In another example, the mode determination unit 20x determines whether or not the mounted vehicle is traveling on a known road based on a travel history stored in the data storage unit 36 or the like. Specifically, the mode determination unit 20x regards a road having a travel history of a predetermined number of times or more as a known road, and sets the output mode to the known road travel mode while traveling on the road. On the other hand, the mode determination unit 20x regards a road having a travel history less than the predetermined number of times as a known road, and sets the output mode to the normal mode while traveling on the road. In this case, the predetermined number of times is appropriately set to a value of 1 or more based on experiments or the like.

  As described above, the mode determination unit 20x can further improve convenience by automatically determining the output mode regardless of the input from the user.

(Modification 4)
In the description of FIG. 2 and the like, the reroute presentation restriction unit 20y determines that the new route satisfies the second condition when the output mode is the known road traveling mode, regardless of whether the traffic jam occurs on the known road. Only allowed the presentation of reroute information. In addition to this, the reroute presentation restriction unit 20y may restrict the presentation of the reroute information only when the output mode is the known road travel mode and traffic congestion occurs on the known road. In this case, for example, the reroute presentation restriction unit 20y determines whether or not a traffic jam has occurred on a known road based on the designated area or the travel history or registered point described in (Modification 3) and the traffic jam information Id. To do. Also by this, the navigation apparatus 1 can present required reroute information to the user while appropriately suppressing unnecessary reroute information.

  The present invention can be suitably applied to a vehicle navigation device, a PND (Personal Navigation Device), and other terminals having a navigation function.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 10 Self-supporting positioning apparatus 12 GPS receiver 20 System controller 22 CPU
36 Data storage unit 38 Communication device 40 Display unit 44 Display

Claims (9)

A navigation device installed in a vehicle,
Determining means for determining whether the vehicle is traveling on a known road of a user;
Mode setting means for setting the output mode to a known road traveling mode when the determination means determines that the known road is traveling;
Re-route presentation means for re-searching the guidance route based on traffic jam information during route guidance and presenting information on the new guidance route when the new guidance route obtained by the re-search satisfies the first condition;
In the known road driving mode, reroute presentation restriction means for restricting the presentation of information on the new guidance route that does not satisfy the second condition, which is higher than the first condition,
A navigation device comprising: The reroute presenting means corresponds to either the first condition, when the time required for the new guidance route is shorter than the guidance route during route guidance, and when the fee required for traveling is low , Present the new route information,
In the known road driving mode, the reroute presentation restricting means is required for traveling when the time required for the new guidance route is shorter than the guidance route during route guidance by a predetermined time difference or more, which is the second condition. 2. The navigation device according to claim 1, wherein presentation of information on the new guidance route is restricted when the charge is not any of cases where the charge is cheaper than a predetermined charge difference.   The navigation device according to claim 1, wherein the second condition is set based on an external input.   The navigation device according to any one of claims 1 to 3, wherein the determination unit determines that a road in a specified area based on an external input is the known road.   5. The determination unit according to claim 1, wherein the determination unit determines that a road that is within a predetermined distance from a preset registration point based on an external input is the known road. 6. Navigation device.   The navigation device according to claim 1, wherein the determination unit determines whether the road is the known road based on a travel history of the vehicle. A control method executed by a navigation device installed in a vehicle,
A determination step of determining whether the vehicle is traveling on a known road of the user;
A mode setting step for setting the output mode to a known road travel mode when the determination step determines that the vehicle is traveling on the known road;
A re-route presentation step of re-searching the guidance route based on traffic jam information during route guidance and presenting information on the new guidance route when the new guidance route obtained by the re-search satisfies the first condition;
In the known road travel mode, a reroute presentation restriction step for restricting the presentation of information on the new guidance route that does not satisfy the second condition, which is higher than the first condition,
A control method comprising: A program installed and executed in a navigation device installed in a vehicle,
Determining means for determining whether the vehicle is traveling on a known road of a user;
Mode setting means for setting the output mode to a known road traveling mode when the determination means determines that the known road is traveling;
Re-route presentation means for re-searching the guidance route based on traffic jam information during route guidance and presenting information on the new guidance route when the new guidance route obtained by the re-search satisfies the first condition;
In the known road travel mode, reroute presentation restriction means for restricting the presentation of information on the new guide route that does not satisfy the second condition, which is higher than the first condition,
A program for causing the navigation device to function as:   A storage medium storing the program according to claim 8.

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