JP2012242174A - Route guidance system, mobile terminal, and server device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more surely guide a user to a destination.SOLUTION: A mobile terminal 1 includes a remaining battery charge amount acquiring part for acquiring the remaining battery charge amount of an own terminal. A center 2 is capable of searching both a route for a privately-owned vehicle which is a travel route in the case that only a privately-owned vehicle is used and a multimodal route which is a travel route in the case that a plurality of traveling means including at least public transportation means and walking are used. In accordance with the remaining battery charge amount of the mobile terminal 1, the center 2 selects a travel route which is either a route for a privately-owned vehicle or a multimodal route and transmits it to the mobile terminal 1, and the mobile terminal 1 performs route guidance of the selected travel route.

Description

  The present invention relates to a route guidance system, a portable terminal, and a server device.

  Devices (hereinafter referred to as navigation devices) having a navigation function for performing route guidance to a destination are known. In recent years, a technique for presenting information corresponding to the remaining battery level of a navigation device to a user is known.

  For example, in Patent Document 1, when it is determined that the travel time required to travel the route to the destination exceeds the operation time of the navigation device calculated from the remaining battery level of the navigation device, the navigation device A technique for notifying that there is a possibility of stopping during guidance is disclosed.

  In recent years, mobile terminals such as mobile phones having a navigation function have been used as navigation devices. When a mobile terminal is used as a navigation device, a search for a route to a destination is performed by a server device that can communicate with the mobile terminal in order to suppress the memory usage and processing load of the mobile terminal. Yes.

Japanese Patent Laid-Open No. 2009-42161 * Japanese Patent Laid-Open No. 2009-92428 discloses a technique for guiding a route until the remaining battery level of a music player has been reached, and is not appropriate as the background art at this time. I have omitted it.

  However, with the technique disclosed in Patent Document 1, the user can recognize that the navigation device may stop during route guidance, but the remaining battery level is insufficient before reaching the destination. In such a case, the navigation device stops before reaching the destination, and the route guidance cannot be performed. Therefore, there is a problem that it is difficult to reliably guide the user to the destination.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a route guidance system, a portable terminal, and a server device that can more reliably guide a user to a destination. There is.

  In the route guidance system according to the first aspect, the mobile terminal includes a remaining charge amount acquisition unit that acquires the remaining charge amount of the terminal itself. In addition, the server device has both a private vehicle route that is a travel route when only a private vehicle is used, and a multimodal route that is a travel route when a plurality of transportation means including at least public transportation and walking are used. It can be searched. Then, based on the remaining charge amount of the mobile terminal, the server device selects one of the private vehicle route and the multimodal route, and performs route guidance on the selected travel route with the mobile terminal. Become.

  Multimodal routes that use multiple means of transportation, including at least public transportation and walking, do not require route guidance while using public transportation, so the functions used for route guidance such as screen display, voice output, and current position detection are provided. It becomes possible to stop. If the function used for the route guidance is stopped, the power consumption of the mobile terminal can be reduced accordingly. Further, in public transportation included in the multimodal route, the user does not have to travel by driving or walking by himself / herself, and route guidance is not necessary. Therefore, it is also conceivable that the user does not use the screen display and audio output functions, and the power consumption of the mobile terminal can be reduced accordingly. Therefore, the multimodal route can be said to be a travel route that can keep the power consumption of the mobile terminal lower than the private vehicle route, and can keep the usable time of the mobile terminal longer.

  According to the configuration of claim 1, since the route guidance for any one of the private vehicle route and the multimodal route is performed based on the remaining charge amount of the portable terminal, the private vehicle route When it is estimated that there is no remaining charge amount of the mobile terminal until the destination is reached, it is possible to perform route guidance for a multimodal route. As described above, the multimodal route is a travel route that can keep the power consumption of the portable terminal lower than that of the private vehicle route. Therefore, the usable time of the portable terminal is kept longer than when the private vehicle route is used. It becomes possible to increase the possibility of route guidance to the destination. Therefore, according to the structure of Claim 1, it becomes possible to guide a user more reliably to the destination.

  In the case of making it like Claim 1, it is good also as an aspect made like Claim 2 or Claim 3. For example, as in claim 2, the portable terminal transmits the remaining charge amount acquired by the remaining charge amount acquisition unit to the server device, and the server device calculates a required time from the departure point to the destination by the private vehicle route. A first required time calculating unit, a first usable time estimating unit for estimating a usable time of the portable terminal when traveling along the private vehicle route based on the remaining charge amount received from the portable terminal, A reachability determination unit that determines whether the available time is less than the required time based on the available time estimated by the available time estimation unit and the required time calculated by the first required time calculation unit; It is good also as an aspect which selects a multimodal path | route, when the availability determination part determines with the said availability time being less than the said required time.

  According to this, based on the remaining charge amount received from the mobile terminal, the usable time of the mobile terminal at the time of traveling along the private vehicle route is estimated on the server device side, so the processing load on the mobile terminal side is reduced. It becomes possible to reduce. Further, by reducing the processing load on the mobile terminal side, it is possible to further reduce the power consumption of the mobile terminal.

  In addition, as described in claim 3, the mobile terminal is capable of estimating the usable time of the mobile terminal when moving along the private vehicle route based on the remaining charge acquired by the remaining charge acquisition unit. A first time for calculating a required time from the departure point to the destination according to the private vehicle route, further comprising a time estimation unit, and transmitting the usable time estimated by the first usable time estimation unit to the server device; Reachability determination that determines whether the available time is less than the required time based on the required time calculation unit, the available time received from the mobile terminal, and the required time calculated by the first required time calculation unit A multimodal route may be selected when the reachability determination unit determines that the available time is less than the required time.

  According to this, based on the remaining charge amount of the mobile terminal, the usable time of the mobile terminal at the time of movement along the private vehicle route is estimated on the mobile terminal side and transmitted to the server device. It is possible to reduce the processing load.

  In the configuration of claim 4, a plurality of candidate search units that search for a plurality of candidates for a multimodal route are provided, and when a multimodal route is selected, a plurality of candidate search units are selected according to the remaining charge amount of the mobile terminal. A multimodal route is selected from the plurality of candidates searched for in the above, and route guidance of the selected multimodal route is performed on the mobile terminal. According to this, it becomes possible to perform route guidance of a multimodal route according to the amount of remaining charge of the mobile terminal.

  For example, as the remaining charge amount of the mobile terminal is small, a candidate having a high proportion of time using public transportation is selected as a multimodal route from the candidates of the multimodal route, and the route guidance is performed by selecting the candidate of the mobile terminal. The power consumption can be further reduced. If the remaining charge amount of the mobile terminal is equal to or greater than the predetermined amount, the multimodal route that best matches the search conditions such as time priority and charge priority is selected, while the remaining charge amount of the mobile terminal is less than the predetermined amount. If there is, it is possible to select a multimodal route with the highest percentage of time to use public transportation to guide the route. According to this, when there is a margin in the remaining charge amount of the mobile terminal, priority is given to the convenience of the user, while when there is no margin in the remaining charge amount, priority is given to keeping the power consumption of the mobile terminal low. It becomes possible to make it. Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

  While the route guidance system according to claims 1 to 4 selects any one of a private vehicle route and a multimodal route, the route guidance system according to claim 5 uses a multimodal route. It is a premise to choose. In the route guidance system according to the fifth aspect, the mobile terminal includes a remaining charge amount acquisition unit that acquires the remaining charge amount of the mobile terminal. The server device also includes a plurality of candidate search units that search for a plurality of candidates for the multimodal route. And at the time of the search of the movement path | route in a server apparatus, according to the remaining charge amount of a portable terminal, a multimodal path | route is selected from the several candidates searched in the multiple candidate search part, and the said selected multimodal path | route Route guidance will be performed on the mobile terminal. Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

  According to this, since the multimodal route is a travel route that can suppress the power consumption of the portable terminal lower than the private vehicle route as described above, the use of the portable terminal is more than the case where the private vehicle route is used. It is possible to increase the possibility that route guidance can be performed to the destination while keeping the possible time long. According to the configuration of claim 5, route guidance can be performed by selecting a multimodal route according to the remaining charge amount of the mobile terminal. For example, the smaller the remaining charge amount of the mobile terminal, the more the power consumption of the mobile terminal can be further increased by selecting a candidate having a high proportion of time using public transportation as a multimodal path from the candidates for the multimodal path. It becomes possible to keep it low. In addition, when the remaining charge amount of the mobile terminal is more than a predetermined amount, a multimodal route that best matches the search conditions such as time priority and charge priority is selected, while the remaining charge amount of the mobile terminal is When the amount is less than the predetermined amount, the route guidance may be performed by selecting a multimodal route with the highest proportion of time for using public transportation. According to this, when there is a margin in the remaining charge amount of the mobile terminal, priority is given to the convenience of the user, while when there is no margin in the remaining charge amount, priority is given to keeping the power consumption of the mobile terminal low. It becomes possible to make it.

  In the configuration of claim 6, the remaining charge amount of the mobile terminal, the candidate for the multimodal route searched by the plurality of candidate search units, the power consumption when using public transportation, and the use of transportation means other than public transportation A second usable time estimating unit for estimating the usable time of the portable terminal for the candidate based on the power consumption in In addition, the second required time calculation unit that calculates the required time from the departure point to the destination for the candidate, and the usable time and the second required time of the mobile terminal for the candidate estimated by the second usable time estimation unit A reaching candidate determination unit that determines whether the available time is equal to or longer than the required time based on the required time for the candidate calculated by the time calculation unit. A candidate that has been most matched with a search condition set in advance other than the condition that the available time is equal to or longer than the required time is determined as a multimodal It will be selected as a route.

  According to this, according to the remaining charge amount of the mobile terminal, it becomes possible to select a multimodal route that allows the mobile terminal to be used up to the destination. It is also possible to select the multimodal route that best matches the search conditions other than the condition that the mobile terminal can be used up to the destination among the candidates for the multimodal route that can be used up to the destination. become. Therefore, it is possible to reliably guide the user to the destination by the multimodal route that matches the search condition. For example, when the search condition is time-first, it is possible to reliably guide the user to the destination through a multimodal route with a shorter arrival time to the destination. In addition, when the search condition is priority on the fee, it is possible to reliably guide the user to the destination through a multimodal route with a lower traffic fee to the destination. Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

  In the configuration of claim 7, based on the remaining charge amount of the mobile terminal, the risk determination unit determines during the route guidance that there is a high risk that the mobile terminal will become unusable before reaching the destination. In such a case, the mobile terminal presents that the mobile terminal is not used. Therefore, it is possible to prompt the user to refrain from using the mobile terminal before the remaining charge amount decreases so that the mobile terminal becomes unusable before reaching the destination. Therefore, the user can be more reliably guided to the destination.

  In the case of the seventh aspect, as in the eighth aspect, based on the remaining charge amount of the mobile terminal and the time required to reach the destination on the travel route that is guiding the route, A lower limit value determining unit that determines a lower limit value of a decrease amount of the remaining charge amount per unit time for enabling the mobile terminal to reach the mobile terminal, and a decrease amount per unit time of the remaining charge amount of the mobile terminal is If the lower limit value determined by the lower limit value determination unit is exceeded, the risk determination unit may determine that the risk that the mobile terminal becomes unusable becomes high before reaching the destination. According to this, the decrease amount per unit time of the remaining charge amount of the mobile terminal exceeds the lower limit value of the decrease amount of the remaining charge amount per unit time so that the mobile terminal can be used until it reaches the destination. In such a case, it can be determined that the risk of the mobile terminal becoming unusable before reaching the destination has increased.

  In the configuration of claim 9, when the risk determination unit determines that there is a high risk that the mobile terminal becomes unusable before reaching the destination, and the travel route during route guidance is When the route is a private vehicle route, a presentation for inquiring whether or not to switch to the multimodal route is made from the portable terminal. When an input to switch to the multimodal route is received from the user at the mobile terminal, the server device searches for the multimodal route based on the remaining charge amount of the mobile terminal, and the searched multimodal route Route guidance will be performed on the mobile terminal. According to this, when the remaining charge amount of the mobile terminal rapidly decreases during route guidance on the private vehicle route, and there is a high risk that the mobile terminal cannot be used before reaching the destination, the multimodal route By switching to the route guidance, it becomes possible to guide the user more reliably to the destination. Therefore, it becomes possible to always guide the user more reliably to the destination according to the change in the remaining charge amount of the mobile terminal.

  In the configuration of claim 10, when the remaining charge amount of the mobile terminal increases during the route guidance by a predetermined amount or more during the route guidance, the mobile terminal presents an inquiry as to whether or not it is necessary to re-search for the travel route. When an input requesting re-search is received from the user by the re-search request input unit, the server device re-searches the movement route based on the remaining charge amount of the mobile terminal, and re-search The route guidance of the travel route is performed by the mobile terminal. According to this, when the remaining charge amount of the mobile terminal increases by a predetermined amount or more in a predetermined time, it becomes possible to re-search for a more appropriate movement route according to the remaining charge amount and perform route guidance. .

  In the configuration of claim 11, the portable terminal suppresses power consumption during the route guidance of the multimodal route and while the user determines that the public transportation is being used by the public transportation use determination unit. The mode is switched to the first power saving mode. According to this, since it is possible to reduce the power consumption of the mobile terminal while using public transportation, the power consumption of the mobile terminal can be reduced more during the route guidance of the multimodal route than during the route guidance of the private vehicle route. It becomes possible to keep it low. Therefore, according to the structure of Claim 11, it becomes possible to guide a user more reliably to the destination.

  In the case of making it like Claim 11, it is good also as an aspect made into the 1st power saving mode the mode which suppresses power consumption at least by activating the present position detection function intermittently like Claim 12. According to a fourteenth aspect of the present invention, a mode that suppresses power consumption by stopping at least the current position detection function may be a first power saving mode.

  In the case of the twelfth aspect, as in the thirteenth aspect, the public transportation use determination unit is based on the current position detected by the current position detection function and the multimodal route in the route guidance. What is necessary is just to set it as the aspect which determines whether the user is using public transport according to whether the said present position is located in the public transport route on the said multimodal route. According to this, it is automatically determined whether or not the user is using public transportation according to the current position detected by the position detection function that starts intermittently, and whether or not the first power saving mode is executed is determined. Will be switched. Therefore, whether or not the first power saving mode is executed can be automatically switched without manual operation by the user, and convenience for the user can be improved.

  In addition, in the case of claim 14, the position detection function cannot be used after switching to the first power saving mode. Therefore, as described in claim 15, the public transportation use determination unit determines that the current position is on the multimodal route based on the current position detected by the current position detection function and the multimodal route being route-guided. When the user's public transportation is used, the user's public transportation use end input unit detects the user's public transportation use start input, and the user's public transportation What is necessary is just to set it as the aspect which determines whether a user is using public transport by detecting the completion | finish of use. According to this, since the end of the use of the public transport by the user is detected on the basis that the input from the user is accepted by the public transport use end input unit, the end of the use of the public transport is detected. The current position detection function can be stopped until detection. Therefore, it is possible to further reduce power consumption compared to a configuration in which the position detection function is intermittently activated.

  In the configuration of claim 16, the public transport use determination unit is using the public transport when the current position detected by the current position detection function is located on the passage connecting the public transports. It will be determined that it is not. According to this, since it determines with a user not using the public transport when it is located on the path which connects public transports, on the path which connects public transports, it is 1st power saving mode. The user can receive route guidance using the current position detected by the current position detection function. Therefore, it is possible to receive route guidance using the current position detected by the current position detection function when moving at the time of transfer of public transportation, and convenience for the user is improved.

  In the configuration of claim 17, the mobile terminal includes an interruption necessity input unit that allows the user to input whether or not the route guidance of the movement route is necessary, and does not require the route guidance of the movement route by the interruption necessity input unit. Until the input indicating that the route guidance of the moving route is necessary, the mode is switched to the second power saving mode which is a mode for suppressing the power consumption of the portable terminal.

  According to this, when the route guidance of the moving route is unnecessary for the user, it is possible to switch to the mode for suppressing the power consumption of the mobile terminal according to the user's intention. For example, when the function used for route guidance such as screen display, audio output, and current position detection is stopped when the second power saving mode is executed, the second saving is performed on a route that does not require route guidance for the user. By switching to the power mode, it is possible to further reduce power consumption while ensuring the effect of guiding the user more securely to the destination.

  According to the portable terminal of the eighteenth aspect, route guidance for any one of the private vehicle route and the multimodal route is performed based on the remaining charge amount of the portable terminal. Therefore, when the multi-modal route is selected when the server device estimates that the remaining charge amount of the mobile terminal does not have until the destination is reached by the private vehicle route, the route guidance of the multi-modal route can be performed. It becomes possible. As described above, the multimodal route is a travel route that can keep the power consumption of the portable terminal lower than that of the private vehicle route. Therefore, the usable time of the portable terminal is kept longer than when the private vehicle route is used. It becomes possible to increase the possibility of route guidance to the destination. Therefore, the user can be more reliably guided to the destination.

  According to the mobile terminal of claim 19, on the basis of the usable time of the mobile terminal estimated based on the remaining charge amount of the mobile terminal, the travel route of any one of the private vehicle route and the multimodal route Route guidance will be performed. Therefore, when the multi-modal route is selected when the server device estimates that the remaining charge amount of the mobile terminal does not have until the destination is reached by the private vehicle route, the route guidance of the multi-modal route can be performed. It becomes possible. As mentioned above, since it is a travel route that can keep the power consumption of the mobile terminal lower than the private vehicle route, keep the mobile device usable time longer than when using the private vehicle route, and route to the destination It becomes possible to increase the possibility that guidance can be performed. Therefore, the user can be more reliably guided to the destination.

  According to the mobile terminal of the twentieth aspect, it is possible to perform route guidance of the multimodal route selected by the server device in accordance with the remaining charge amount of the mobile terminal. Therefore, when the remaining charge of the mobile terminal is small, when a multimodal route with a high proportion of time using public transportation is selected from the candidates for the multimodal route, route guidance for the multimodal route is given. Will do. Therefore, as in the configurations of claims 4 and 5, priority is given to the convenience of the user when the remaining charge amount of the mobile terminal has a margin, while when the remaining charge amount has no margin, It is possible to prioritize keeping power consumption low. Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

  According to the structure of claim 21, when the risk determination unit determines during the route guidance that there is a high risk that the mobile terminal becomes unusable before reaching the destination, the use of the mobile terminal is refrained. Therefore, the user can be prompted to refrain from using the mobile terminal before the remaining charge amount decreases so that the mobile terminal becomes unusable before reaching the destination. As a result, the user can be more reliably guided to the destination.

  According to the structure of Claim 22, since it becomes possible to suppress the power consumption of a portable terminal during the use of public transportation, the portable terminal is more effective at the time of route guidance of a multimodal route than at the time of route guidance of a private vehicle route. It becomes possible to hold down power consumption more reliably. Therefore, the user can be more reliably guided to the destination.

  According to the configuration of claim 23, when route guidance for the moving route is unnecessary for the user, it is possible to switch to a mode for reducing the power consumption of the mobile terminal according to the user's intention. For example, when the function used for route guidance such as screen display, audio output, and current position detection is stopped when the second power saving mode is executed, the second saving is performed on a route that does not require route guidance for the user. By switching to the power mode, it is possible to further reduce power consumption while ensuring the effect of guiding the user more securely to the destination.

  According to the server device of claim 24, based on the remaining charge amount of the mobile terminal, a travel route of either a private vehicle route or a multimodal route is searched, and the searched travel route is transmitted to the mobile terminal. Will do. Therefore, when it is estimated that the remaining charge amount of the mobile terminal does not exist until the destination is reached by the private vehicle route, the multimodal route can be selected and transmitted to the mobile terminal. As described above, the multimodal route is a moving route that can suppress the power consumption of the portable terminal lower than the private vehicle route. Therefore, there is a possibility that the route guidance of the transmitted multimodal route is performed on the portable terminal, so that the usable time of the portable terminal can be kept longer than the case of using the private vehicle route and the route guidance can be performed to the destination. Can be increased. Therefore, the user can be more reliably guided to the destination.

  According to the server device of claim 25, based on the available time of the mobile terminal estimated by the mobile terminal based on the remaining charge amount of the mobile terminal, either of the private vehicle route or the multimodal route Such a movement route is searched, and the searched movement route is transmitted to the portable terminal. Therefore, when it is estimated that the remaining charge amount of the mobile terminal does not exist until the destination is reached by the private vehicle route, the multimodal route can be selected and transmitted to the mobile terminal. Therefore, even with the above configuration, the user can be more reliably guided to the destination.

  According to the configurations of claims 26 and 27, a multimodal route corresponding to the remaining charge amount of the mobile terminal is selected from a plurality of candidates and transmitted to the mobile terminal. Therefore, as the remaining charge amount of the mobile terminal is smaller, it is possible to select a candidate having a higher proportion of time using public transportation as a multimodal route from among candidates for the multimodal route. Among multimodal route candidates, a multimodal route having a higher proportion of time for using public transportation is a moving route that can reduce the power consumption of the mobile terminal. Therefore, as in the configurations of claims 4 and 5, priority is given to the convenience of the user when there is a margin in the remaining charge amount of the portable terminal, while when there is no margin in the remaining charge amount of the portable terminal. It is possible to prioritize keeping power consumption low. Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

  According to the configuration of claim 28, it is possible to select a multimodal route that allows the mobile terminal to be used up to the destination according to the remaining charge amount of the mobile terminal, and the mobile terminal is used up to the destination. Of the possible multimodal route candidates, it is possible to select a multimodal route that best matches a preset search condition other than the condition that the mobile terminal can be used up to the destination. Therefore, it is possible to reliably guide the user to the destination by the multimodal route that matches the search condition. Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

1 is a block diagram showing a schematic configuration of a route guidance system 100. FIG. 1 is a block diagram showing a schematic configuration of a mobile terminal 1. 2 is a block diagram showing a schematic configuration of a route search center 2. FIG. 6 is a flowchart illustrating a flow of processing related to route guidance according to the remaining charge amount of the mobile terminal 1 in the route guidance system 100 according to the first embodiment. 7 is a flowchart illustrating an example of a flow of multimodal route guidance processing in a mobile side control unit 16. (A) is a schematic diagram which shows an example of the display of the route guidance of a multimodal route, (b) is a schematic diagram which shows an example of the display of the route guidance of a private vehicle route. 6 is a flowchart illustrating a flow of processing related to route guidance according to the remaining charge amount of the mobile terminal 1 in the route guidance system 100 according to the first embodiment. (A) is a schematic diagram showing an example of a display of route guidance for a multimodal route that best matches the search conditions, and (b) is a route guidance for a multimodal route that uses a public common institution as close as possible to the destination. It is a schematic diagram which shows an example of a display. 12 is a flowchart illustrating an example of a process flow according to a rapid decrease in the remaining charge amount of the mobile terminal 1 according to the third embodiment. (A) is a schematic diagram which shows an example of the display of the message which refrains from use of the portable terminal 1, (b) is a schematic diagram which shows an example of the display which inquires whether to switch to a multimodal route, c) is a schematic diagram showing an example of a display for inquiring whether re-search is necessary. 12 is a flowchart illustrating an example of a process flow according to an increase in the remaining charge amount of the mobile terminal 1 according to the third embodiment. 10 is a flowchart illustrating a flow of processing related to manual switching of the power saving mode of the mobile terminal 1 in the fourth embodiment. It is a schematic diagram for demonstrating the switching of the presence or absence of route guidance according to the necessity of route guidance.

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

(Embodiment 1)
First, the route guidance system in Embodiment 1 will be described. FIG. 1 is a block diagram showing a schematic configuration of a route guidance system 100 to which the present invention is applied. A route guidance system 100 shown in FIG. 1 includes a mobile terminal 1 and a route search center 2. The route guidance system 100 performs route guidance from a departure point to a destination using one of a private vehicle route and a multimodal route according to the remaining charge amount of the mobile terminal 1. .

  The private vehicle route is a movement route that can reach the destination from the departure point when using only private vehicles. What is necessary is just to set it as the structure using the recommended path | route searched considering the preset search conditions, such as distance priority and time priority, as a private vehicle path | route. In addition, the term “private automobile” as used herein refers to an automobile other than a transportation-use automobile that carries passengers and cargo, receives charges, and performs commercial activities. Private cars are not limited to three or more cars but also include motorcycles. In addition, private cars include private cars owned by individuals, public vehicles of public offices, and commercial and company vehicles.

  On the other hand, the multimodal route is a moving route that can reach the destination from the starting point when using a plurality of moving means including at least public transportation. As a moving means in a multimodal route, there are, for example, a private car and a walk in addition to public transportation. In addition, examples of public transportation include railroads, buses, taxis, airplanes, and ships. In this embodiment, a case where taxis are excluded from public transportation will be described as an example. Note that the plurality of moving means include trains of different railway companies and trains traveling on a plurality of routes of the same railway company.

  The mobile terminal 1 is a multi-function mobile phone carried by a user, and, like a general multi-function mobile phone, a communication function with an external device, a mail function, a call function, an Internet connection function (Web connection function) It has various functions such as a music player function, a picture viewer function, a moving image playback function, a GPS function, and a game function.

  In the present embodiment, a case where a multi-function mobile phone is used as the mobile terminal 1 will be described as an example, but the present invention is not necessarily limited thereto. The portable terminal 1 may be configured to use another device as long as it has at least a communication function with an external device and a GPS function. For example, a configuration using a PDA (Personal Digital Assistants), a tablet computer, or the like may be used.

  Here, a schematic configuration of the mobile terminal 1 will be described with reference to FIG. For the sake of convenience, among the configurations related to the functions of a general multi-function mobile phone, those not necessary for the description of the present invention will not be described. FIG. 2 is a block diagram illustrating a schematic configuration of the mobile terminal 1. As shown in FIG. 2, the mobile terminal 1 includes a mobile side communication unit 11, a current position detection unit 12, a display unit 13, an audio output unit 14, an operation switch unit 15, and a mobile side control unit 16.

  The mobile communication unit 11 communicates with the route search center 2 via a communication network such as a mobile phone network or the Internet based on an instruction from the mobile control unit 16. For example, when the mobile communication unit 11 receives an instruction from the mobile control unit 16 based on the operation of the operation switch unit 15 by the user, the mobile side communication unit 11 searches for various data such as a departure point, a destination, a remaining charge amount, and a terminal type. Transmit to the center 2. Further, the mobile communication unit 11 receives data on a travel route such as a private vehicle route and a multimodal route transmitted from the route search center 2, and outputs these data to the mobile control unit 16.

  The remaining charge amount data here is assumed to be data of the remaining charge amount of the rechargeable battery of the mobile terminal 1. The terminal type data is data for specifying the model of the mobile terminal 1.

  The current position detection unit 12 includes a GPS receiver 121 for GPS (Global Positioning System) that detects the current position of the mobile terminal 1 based on radio waves from an artificial satellite, an acceleration sensor 122 that detects acceleration of the mobile terminal 1, A gyroscope 123 that detects an angular velocity around the vertical direction of the mobile terminal 1 is provided, and the current position of the mobile terminal 1 is periodically detected. In the GPS function of the mobile terminal 1, the current position detected by the current position detection unit 12 is specified as the current position of the mobile terminal 1. The GPS function corresponds to the current position detection function in the claims.

  The display unit 13 can be configured using, for example, a liquid crystal display or an organic EL display. The voice output unit 14 is configured by a speaker or the like, and outputs a guidance voice or the like at the time of route guidance based on an instruction from the portable control unit 16.

  For example, a touch switch or a mechanical switch integrated with the display unit 13 is used as the operation switch unit 15, and various operation instructions are given to the portable-side control unit 16 by a switch operation. The operation switch unit 15 includes a switch for setting a departure place and a destination. Then, by operating the switch, the user of the mobile terminal 1 can select a destination from a previously registered location, facility name, telephone number, address, or the like.

  The portable side control unit 16 is configured as a normal computer, and includes a well-known CPU, a memory such as a ROM, a RAM, and an EEPROM, an I / O, and a bus line for connecting these configurations (all not shown). Etc.). The mobile-side control unit 16 performs processing as a navigation function based on various information input from the mobile-side communication unit 11, the current position detection unit 12, and the operation switch unit 15 (for example, map scale change processing, departure place setting processing, Destination setting processing, route search request processing, route guidance processing, display screen change processing, volume adjustment processing, etc.) and processing related to switching to the power saving mode are executed.

  Returning to FIG. 1, the route search center 2 is composed of a server device, and the departure point, the destination, the remaining charge amount transmitted from the mobile terminal 1 via a communication network such as a mobile phone network or a network, Based on various data such as the terminal type, a travel route such as a private vehicle route or a multimodal route is searched, and the searched travel route is returned to the portable terminal 1. The route search center 2 may be composed of one server device or may be composed of a plurality of server devices. The route search center 2 corresponds to the server device in the claims.

  Here, a schematic configuration of the route search center 2 will be described with reference to FIG. FIG. 3 is a block diagram showing a schematic configuration of the route search center 2. As shown in FIG. 3, the route search center 2 includes a center side communication unit 21, a map database (DB) 22, a traffic information DB 23, a public transport information DB 24, a parking lot information DB 25, and a center side control unit 26. Yes.

  The center side communication unit 21 performs communication with the mobile terminal 1 via a communication network such as a mobile phone network or the Internet based on an instruction from the center side control unit 26. For example, the center side communication unit 21 receives various data such as a departure point, a destination, a remaining charge amount, and a terminal type transmitted from the mobile terminal 1 and outputs them to the center side control unit 26. Further, the center side communication unit 21 transmits to the portable terminal 1 data on a movement route such as a private vehicle route or a multimodal route searched by the center side control unit 26 based on an instruction from the center side control unit 26.

  The map DB 22 stores various data such as map data, facility POI (Points Of Interest) data such as various facilities and stores, and drawing data for drawing a road map. The map data includes link data indicating roads and node data. A link is a link between nodes when the roads on the map are divided by a plurality of nodes such as intersections, branches, and merge points, and roads are configured by connecting the links. .

  The link data includes a unique number (link ID) for identifying the link, a link length indicating the length of the link, link start and end node coordinates (latitude / longitude), link travel time, road name, road type, road width, It consists of data such as the number of lanes, the presence / absence of right / left turn lanes, the number of lanes, and speed limits. The link travel time may be configured to include both the link travel time when traveling by car and the link travel time when traveling by foot. The node data is composed of data such as a node ID with a unique number for each node on the map, node coordinates, a node name, a connection link ID describing a link ID of a link connected to the node, and an intersection type. Is done.

  In the traffic information DB 23, each road is stored in association with traffic information such as the degree of congestion of each road, traffic regulation, and link travel time. These traffic information is updated every predetermined time. Further, the traffic jam information can be obtained from, for example, a VICS (registered trademark) center or based on information obtained from a probe car (floating car).

  In the public transportation information DB 24, each transportation in public transportation and operation information of each transportation are stored in association with each other. This operation information includes time information (departure time information, arrival time information) in each transportation facility, information on operation delay, suspension of service, and the like. In addition, the time information of each transportation facility can be acquired at a timing when each transportation facility is updated (for example, schedule revision). In addition, information related to operation delays and suspensions of each transportation facility can be acquired from each transportation facility every predetermined time or at the timing when the operation delay or suspension occurs.

  The parking lot information DB 25 stores each parking lot and parking lot information (for example, whether the vehicle is full or empty) in association with each parking lot. In addition, the parking lot information of each parking lot can be acquired from each parking lot every predetermined time.

  The center-side control unit 26 is configured as a normal computer, and includes a well-known CPU, a memory such as a ROM, a RAM, and an EEPROM, an I / O, and a bus line for connecting these configurations (all not shown). Etc.). The center side control unit 26 executes processing related to route search based on various information input from the center side communication unit 21, the map DB 22, the traffic information DB 23, the public transport information DB 24, and the parking lot information DB 25.

  Next, processing related to route guidance according to the remaining charge amount of the mobile terminal 1 in the route guidance system 100 according to the first embodiment will be described with reference to FIG. FIG. 4 is a flowchart illustrating a flow of processing related to route guidance according to the remaining charge amount of the mobile terminal 1 in the route guidance system 100 according to the first embodiment. This flow is started when an operation input for setting a departure point and a destination is performed on the operation switch unit 15 of the mobile terminal 1 by the user.

  First, in step S1, the mobile-side control unit 16 performs destination setting processing, and proceeds to step S2. In the destination setting process, the destination selected by operating the operation switch unit 15 is set as the destination. The departure location may be configured to automatically set the current location of the mobile terminal 1 detected at the current location detection unit 12 when the destination is set as the departure location.

  In step S2, multimodal route guidance availability determination processing is performed. In the multimodal route guidance availability determination process, the mobile side control unit 16 determines whether or not the route guidance for the multimodal route may be performed (that is, whether or not the multimodal route is acceptable). Whether or not the multimodal route is acceptable may be determined according to an input from the user to select whether or not the multimodal route is accepted, which is accepted by the portable control unit 16 via the operation switch unit 15. The portable-side control unit 16 may be configured to prompt the user to select whether or not to allow a multimodal route by causing the display unit 13 to display whether or not the multimodal route is acceptable.

  If it is determined that the route guidance for the multimodal route may be performed (that is, the multimodal route is acceptable) (YES in step S2), the process proceeds to step S3. If it is determined that the route guidance for the multimodal route should not be performed (that is, the multimodal route is not possible) (NO in step S2), the process proceeds to step S13.

  In step S3, a remaining charge amount consideration route search request process is performed, and the process proceeds to step S4. In the remaining charge amount consideration route search request process, the route search request including the departure point and destination data set in step S1, the remaining charge amount data of the portable terminal 1, and the terminal type data of the portable terminal 1 is controlled on the mobile side. Created by the unit 16 and transmitted from the mobile communication unit 11 to the route search center 2. What is necessary is just to set it as the structure which the portable side control part 16 obtains the data of the remaining charge amount of the portable terminal 1 by monitoring SOC (state of charge) of the rechargeable battery of a portable terminal. Therefore, the portable side control part 16 is equivalent to the remaining charge amount acquisition part of a claim. The terminal type data of the portable terminal 1 may be obtained by reading out data stored in a nonvolatile memory such as a ROM of the portable control unit 16. Since it is necessary to identify the requesting mobile terminal 1 in the route search center 2, identification data for identifying the mobile terminal 1 such as a terminal ID and an e-mail address is added to the route search request and transmitted. Shall be.

  In step S4, the center side communication unit 21 of the route search center 2 receives the route search request transmitted in step S3, outputs it to the center side control unit 26, and proceeds to step S5. In step S5, the center side control unit 26 performs the first usable time estimation process, and proceeds to step S6. In the first usable time estimation process, the usable time of the portable terminal 1 when moving along the private vehicle route is estimated based on the remaining charge amount data and the terminal type data included in the route search request. . Therefore, the center side control part 26 is equivalent to the 1st usable time estimation part of a claim.

  An example of the first usable time estimation process will be described below. The electronically rewritable non-volatile memory such as EEPROM of the center side control unit 26 stores in advance a table in which power consumption during movement by a private car route is associated with each terminal type. . The power consumption during movement along the private vehicle route may be configured to store a value actually measured by an experiment, for example, or a value estimated in consideration of the function used in the portable terminal 1 while using the private vehicle. It is good also as a structure to store.

  The center side control unit 26 refers to the table based on the terminal type data included in the route search request, and obtains power consumption corresponding to the terminal type of the mobile terminal 1. Then, based on the power consumption data and the remaining charge amount data included in the route search request, by calculating the time to reach the remaining charge amount at which the mobile terminal 1 becomes unusable, The usable time of the mobile terminal 1 is estimated. Here, “unusable” refers to a situation in which the power of the mobile terminal 1 is turned off due to a shortage of the remaining charge amount of the mobile terminal 1.

  In step S6, the center side control part 26 performs a private vehicle route search process, and moves to step S7. In the private vehicle route search process, the private vehicle route from the departure point to the destination included in the route search request is searched using the data stored in the map DB 22. As described above, the private vehicle route may be configured to perform a search in consideration of preset private vehicle route search conditions (hereinafter, private vehicle search conditions) such as distance priority and time priority. By including the private vehicle search condition input from the user on the portable terminal 1 side via the operation switch unit 15 in the route search request and transmitting it to the route search center 2, the private vehicle search condition desired by the user is controlled by the center. What is necessary is just to set it as the structure preset by the part 26. FIG. In addition, the search for the private vehicle route may be performed in consideration of the data stored in the traffic information DB 23. Specifically, the link travel time stored in the traffic information DB 23 may be adopted as the link travel time, or a route may be searched to avoid roads with high traffic congestion or traffic restrictions. .

  In step S7, the center side control unit 26 performs a first required time calculation process, and proceeds to step S8. In the first required time calculation process, the required time from the departure place to the destination by the private car route searched in the private car route search process is calculated. Therefore, the center side control part 26 is equivalent to the 1st required time calculation part of a claim. For example, what is necessary is just to set it as the structure calculated by adding together the link travel time (link travel time at the time of moving with a motor vehicle) of each link in the private vehicle route searched by the private vehicle route search process.

  In this embodiment, although the structure which performs a private vehicle route search process after a 1st usable time estimation process was shown, it does not necessarily restrict to this. For example, the first usable time estimation process and the private vehicle route search process may be performed in parallel, or the first usable time estimation process may be performed after the private vehicle route search process.

  In step S <b> 8, the center-side control unit 26 determines whether or not the destination can be reached within the usable time of the mobile terminal 1 based on the private vehicle route searched in the private vehicle route search process. Whether or not the destination can be reached is determined according to whether or not the usable time estimated in the first usable time estimation process is less than the required time calculated by the first required time calculation unit. Therefore, the center side control part 26 is equivalent to the reachability determination part of a claim. If the available time is less than the required time, it is determined that the destination cannot be reached (NO in step S8), and the process proceeds to step S9. If the available time is equal to or longer than the required time, it is determined that the destination can be reached (YES in step S8), and the process proceeds to step S16.

  In step S9, the center side control part 26 performs the remaining charge amount consideration multimodal route search process, and moves to step S10. In the multi-modal route search process in consideration of the remaining charge amount, data stored in each of the map DB 22, the public transport information DB 24, and the parking lot information DB 25 is used to set time priority, charge priority, transfer priority, etc. in advance. The multimodal route from the starting point to the destination included in the route search request is searched in consideration of the search condition for the multimodal route (hereinafter referred to as multimodal search condition). The multimodal search condition input by the user on the portable terminal 1 side via the operation switch unit 15 is included in the route search request and transmitted to the route search center 2, so that the multimodal search condition desired by the user is controlled by the center. What is necessary is just to set it as the structure preset by the part 26. FIG.

  When the center-side control unit 26 searches for a multimodal route, in the same manner as the well-known multimodal route search, there is a transportation facility to be used, a parking lot near a boarding station (or a bus stop, an airport or a port), The route from the departure point to the parking lot, the route from the parking lot to the boarding station (or bus stop or airport or port), the route from the getting off station (or bus stop or airport or port) to the destination, etc. The route to the ground is comprehensively searched.

  When the center-side control unit 26 searches for a multimodal route, a predetermined number (for example, five) of multimodal route candidates are searched in order from the one that matches the multimodal search condition. Therefore, the center side control part 26 is equivalent to the multiple candidate search part of a claim. The predetermined number here is a number that can be arbitrarily set. In addition, the configuration may not be limited to a configuration in which a predetermined number of multimodal route candidates are searched in order from the one that matches the multimodal search condition. For example, a configuration may be adopted in which a predetermined number of candidates for a multimodal route are searched in order from those that match according to a fixed condition different from the multimodal search condition.

  In the remaining charge amount-considered multimodal route search processing, the following processing is performed in order from the candidate for the multimodal route that matches the multimodal search condition. First, the remaining charge amount data included in the route search request, multimodal route candidate data, the power consumption of the mobile terminal 1 when using public transportation, and the use of transportation means other than public transportation Based on the power consumption of the portable terminal 1, the second usable time estimation process for estimating the usable time of the portable terminal 1 when the candidate is used is performed. Therefore, the center side control part 26 is equivalent to the 2nd usable time estimation part of a claim.

  An example of the second usable time estimation process will be described below. An electronically rewritable nonvolatile memory such as an EEPROM of the center side control unit 26 includes power consumption when using public transportation (hereinafter, power consumption when using public transportation) and public transportation for each terminal type. It is assumed that a table in which power consumption when using any other means of transportation (hereinafter, power consumption when using non-public transportation) is associated is stored in advance. The power consumption when using public transportation and the power consumption when using non-public transportation may be configured to store values actually measured by experiments, for example, or when using public transportation or using transportation means other than public transportation It is good also as a structure which stores the value estimated in consideration of the function used with the portable terminal 1 sometimes.

  The center-side control unit 26 refers to the above table based on the terminal type data included in the route search request, and uses the power consumption when using public transportation and the non-public traffic according to the terminal type of the mobile terminal 1. These power consumptions are estimated by obtaining power consumption when using the engine. Therefore, the center side control part 26 is equivalent to the power consumption estimation part at the time of use of public transportation and the power consumption estimation part at the time of use of non-public transportation.

  For each terminal type, instead of the power consumption when using public transportation, the cut rate of power consumption when using transportation means other than public transportation when using public transportation is associated. Also good. In this case, the power consumption when using public transportation may be estimated from the power consumption when using non-public transportation and the cut rate.

  Based on the candidate data of the multimodal route, the center side control unit 26 obtains the use time of the public transportation on the candidate route and the link travel time of the moving means other than the public transportation. The use time of public transportation may be determined from the departure time and arrival time. Then, the center side control unit 26 uses the data of the power consumption when using public transport and the power consumption when using non-public transport, the use time of the public transport on the candidate route, and the travel means other than the public transport. Based on the link travel time and the remaining charge data included in the route search request, the candidate is used by calculating the time until the mobile terminal 1 reaches the remaining charge amount where it cannot be used. In this case, the usable time of the portable terminal 1 is estimated.

  The center-side control unit 26 performs a second required time calculation process for calculating the required time from the departure point to the destination for the candidate. For example, in the second required time calculation process, based on the departure time and arrival time of the public transportation on the candidate route, the use time of the public transportation, and the link travel time of the transportation means other than the public transportation, Calculate the time required from the starting point to the destination for the candidate. Therefore, the center side control part 26 is equivalent to the 2nd required time calculation part of a claim.

  Then, based on the available time estimated in the second available time estimation process and the required time calculated in the second required time calculation process, the center side control unit 26 determines whether the available time is equal to or longer than the required time. Determine whether or not. Therefore, the center side control part 26 is equivalent to the arrival candidate determination part of a claim. When it is determined that the available time is equal to or longer than the required time, the candidate is selected as a multimodal route that can reach the destination within the available time of the mobile terminal 1.

  If it is not determined that the available time is equal to or longer than the required time, the same processing as described above is repeated for a candidate that matches the candidate according to the multimodal search condition after the candidate. For this next candidate, if it is not determined that the available time is equal to or longer than the required time, the same process as described above is repeated for the next candidate. If it is determined that the usable time is not longer than the required time for all candidates, the candidate that best matches the multimodal search condition is selected as the multimodal route.

  In the present embodiment, a configuration is shown in which processing is performed in order from candidates that match according to the multimodal search condition, but this is not necessarily the case. For example, the available time and required time of the mobile terminal 1 are obtained for all candidates, a candidate whose available time is equal to or longer than the required time is determined, and when there are a plurality of candidates, multimodal among the candidates A candidate that matches according to the search condition may be selected as a multimodal route.

  In step S10, when a multimodal route that can reach the destination within the usable time of the mobile terminal 1 is selected in the remaining charge amount-considered multimodal route search process (YES in step S10), the process proceeds to step S11. . If a multimodal route that can reach the destination within the usable time of the mobile terminal 1 is not selected in the remaining charge amount-considered multimodal route search process (NO in step S10), the process proceeds to step S12.

  In step S11, the center side control unit 26 performs data transmission processing when reachable, and proceeds to step S17. In the reachable time data transmission process, the center-side control unit 26 causes the center-side communication unit 21 to transmit the data of the multimodal route searched in the remaining charge amount-considered multimodal route search process to the mobile terminal 1. Further, the center side control unit 26 adds voice guidance data, map data and drawing data around the multimodal route, and operation information of public transportation to the multimodal route data and transmits the data to the portable terminal 1.

  In step S12, the center side control unit 26 performs data transmission processing when unreachable, and proceeds to step S18. In the unreachable data transmission process, the center side control unit 26 uses the center side communication unit 21 to select candidate multimodal route data that best matches the multimodal search condition selected in the remaining charge amount-considered multimodal route search process. To the portable terminal 1. The center-side control unit 26 also has data indicating that a multimodal route that can reach the destination within the usable time of the mobile terminal 1 has not been searched (hereinafter referred to as unreachable data within the usable time). Transmit to the mobile terminal 1. Further, the center-side control unit 26 adds voice guidance data, map data around the multimodal route, and drawing data to the multimodal route data and transmits the data to the mobile terminal 1.

  In step S13, which is performed when it is determined in step S2 that route guidance for a multimodal route should not be performed, a normal route search request process is performed, and the process proceeds to step S14. In the normal route search request process, the mobile side control unit 16 creates a route search request including the departure point and destination data set in step S1 and transmits the route search request from the mobile side communication unit 11 to the route search center 2. Since it is necessary to identify the requesting mobile terminal 1 in the route search center 2, identification data for identifying the mobile terminal 1 such as a terminal ID and an e-mail address is added to the route search request and transmitted. Shall be.

  In step S14, the center side communication unit 21 of the route search center 2 receives the route search request transmitted in step S13, outputs it to the center side control unit 26, and proceeds to step S15. In step S15, as in step S6, the center-side control unit 26 performs a private vehicle route search process, and proceeds to step S16.

  In step S16, the center side control part 26 performs a private vehicle path | route transmission process, and moves to step S19. In the private vehicle route transmission process, the center side control unit 26 causes the center side communication unit 21 to transmit the data of the private vehicle route searched in the private vehicle route search process to the portable terminal 1. In addition, the center-side control unit 26 adds voice guidance data, map data around the private vehicle route, and drawing data to the private vehicle route data and transmits the data to the portable terminal 1.

  In step S <b> 17, the mobile side control unit 16 performs multimodal route guidance processing based on data such as a multimodal route transmitted from the route guidance center 2, and the flow ends. Here, the outline of the multimodal route guidance process will be described with reference to the flowchart of FIG. FIG. 5 is a flowchart illustrating an example of a flow of multimodal route guidance processing in the mobile side control unit 16.

  First, in step S171, route guidance for a multimodal route is started, and the process proceeds to step S172. In the route guidance of the multimodal route, the multimodal route searched by the route guidance center 2 on the map of a certain scale and a certain range including the current position of the mobile terminal 1 detected by the current position detection unit 12, and the current position The multi-modal route guidance is performed by superimposing marks indicating the current position of the mobile terminal 1 sequentially detected by the detection unit 12 and displaying them on the display unit 13.

  Here, an example of the display of the route guidance of the multimodal route is shown in FIG. FIG. 6A is a schematic diagram illustrating an example of display of route guidance for a multimodal route. In the figure, A indicates the current position, B indicates the movement route, and C indicates the destination. D indicates a parking lot for transfer, E indicates a use start position (for example, a transfer station) of public transport, and F indicates a use end position (for example, a disembarkation station) of public transport. ing. As shown in FIG. 6A, in the route guidance of the multimodal route, the travel route, the current position and the destination are displayed on the map, and the use start position and use end position of public transportation are also displayed. The In addition, since there is no need to guide the travel route during use of public transport, the travel route during use of public transport is not displayed. In addition, it is good also as a structure which displays the movement path | route in use of public transport.

  Further, when voice guidance data is also transmitted from the route guidance center 2, for example, a voice message for guiding a transfer place or the like is reproduced and output from the voice output unit 14, and route guidance for a multimodal route is performed. .

  In step S172, public transportation use start determination processing is performed. In the public transportation use start determination process, public data is displayed on the multimodal route based on the data of the multimodal route being route-guided and the data of the current location of the mobile terminal 1 sequentially detected by the current location detection unit 12. It is determined whether the user has started using public transportation (that is, use of public transportation) depending on whether or not the mobile terminal is located at a point where the transportation is a boarding place. If it is determined that the use of public transportation is started (YES in step S172), the process proceeds to step S173. If it is not determined that the use of public transportation has started (NO in step S172), the flow in step S172 is repeated.

  In step S173, a power saving mode switching process is performed, and the process proceeds to step S174. In the power saving mode switching process, the mobile terminal 1 is notified of switching to the power saving mode. In addition, a notification of a method of operation input of the operation switch unit 15 (input at the end of use of public transport) when the use of the public transport determined to have started in step S172 is ended is performed. Note that the notification may be configured to be performed by display on the display unit 13 or may be configured to be performed by audio output from the audio output unit 14.

  In step S174, a power saving mode execution process is performed, and the process proceeds to step S175. In the power saving mode execution process, the portable terminal 1 is switched to a power saving mode, which is a mode for suppressing the power consumption of the portable terminal 1. In power saving mode, communication function with external devices, mail function, call function, Web connection function, music player function, picture viewer function, moving image playback function, GPS function, navigation function, game function, screen display and audio output The power consumption of the mobile terminal 1 is suppressed by stopping all or some of the various functions of the mobile terminal 1 such as functions. In addition, it is good also as a structure which suppresses the power consumption of the portable terminal 1 by stopping the said function and making it return for every predetermined period. In addition, what is necessary is just to set it as the structure which returns (that is, starts intermittently) for every predetermined period by using the timer circuit etc. which are not illustrated. Moreover, it is good also as a structure which suppresses the power consumption of the portable terminal 1 by lowering | hanging the brightness | luminance of the screen of the portable terminal 1, or turning off the power supply of the portable terminal 1 itself.

  In the power saving mode, it is preferable to stop functions other than functions considered to be less likely to be used during operation of the private vehicle. For example, it is preferable to stop the music player function, the GPS function, the navigation function, the screen display function, and the voice output function. The power saving mode referred to here corresponds to the first power saving mode in the claims. In the present embodiment, for example, the GPS function, the navigation function, the screen display function, and the voice output function are stopped. Moreover, it is preferable that the above-mentioned power consumption when using public transportation is determined according to the power consumption cut rate in the power saving mode.

  In step S175, public transportation use termination determination processing is performed. In the public transport use end determination process, when the input to the operation switch unit 15 at the end of use of public transport is performed, it is determined that the user has ended the use of public transport (YES in step S175), and step S176 is performed. Move on. If no input is made to the operation switch unit 15 when the use of public transportation is completed, it is determined that the use of public transportation has not been completed (NO in step S175), and the flow returns to step S174. repeat. Therefore, the operation switch unit 15 corresponds to the public transportation use end input unit in the claims.

  In step S176, recovery from the power saving mode is performed, and the process proceeds to step S177. Therefore, the portable side control part 16 is equivalent to the public transportation use determination part of a claim. When the GPS function, the navigation function, the screen display function, and the voice output function are stopped and returned at predetermined intervals, the public transportation is based on the current position detected by the current position detection unit 12. It is good also as a structure which determines engine use completion. Specifically, based on the data of the multimodal route being routed and the data of the current position of the mobile terminal 1 that is sequentially detected by the current position detection unit 12, What is necessary is just to set it as the structure which determines whether it is completion | finish of use of public transport according to whether the portable terminal is located in the point which becomes.

  According to this, it is possible to automatically return from the power saving mode at the end of use of public transportation even if the user does not perform manual operation, so that convenience for the user can be improved. An effect is obtained. On the other hand, in the configuration in which the input at the end of the use of public transportation is performed, there is no need to periodically return the GPS function, so that an effect of further reducing power consumption can be obtained.

  Also, according to this, when the current position of the mobile terminal 1 is located on a passage that connects public transportation facilities, the mobile-side control unit 16 determines that the user is not using public transportation facilities. become. Therefore, when it is located on a passage that connects public transportation facilities, such as when walking on public transportation, it is not possible to switch to the power saving mode and the route guidance using the GPS function is provided to the user. Can receive. Therefore, it is possible to receive route guidance using the current position when moving at the time of transfer of public transportation, and convenience for the user is improved.

  In step S177, it is determined whether the user has arrived at the destination. Whether or not the user has arrived at the destination is determined based on the end point (that is, the destination) of the multimodal route in the route guidance and the current position data of the mobile terminal 1 sequentially detected by the current position detection unit 12. In addition, the determination may be made according to whether or not the mobile terminal is located at the destination. And when it determines with having arrived at the destination (it is YES at step S177), a flow is complete | finished. If it is not determined that the destination has been reached (NO in step S177), the flow returns to step S172 to repeat the flow.

  Returning to FIG. 4, in step S <b> 18 following step S <b> 12, the remaining charge amount until reaching the destination on the multimodal route is sufficient based on the unreachable time reachable data transmitted from the route guidance center 2. The mobile-side control unit 16 makes a notification indicating that there is no notification (that is, a notification of inability to reach within use time), and proceeds to step S17. The notification may be performed by display on the display unit 13 or may be performed by audio output from the audio output unit 14.

  In step S19 following step S16, the portable side control unit 16 performs private vehicle route guidance processing based on data such as the private vehicle route transmitted from the route guidance center 2, and the flow ends. In the private vehicle route guidance process, the private vehicle route searched by the route guidance center 2 on the map of a certain scale and a certain range including the current position of the mobile terminal 1 detected by the current position detection unit 12 and the current position detection. By displaying a mark indicating the current position of the mobile terminal 1 sequentially detected by the unit 12 on the display unit 13, route guidance for the private vehicle route is performed.

  Here, an example of the route guidance display of the private vehicle route is shown in FIG. FIG. 6B is a schematic diagram illustrating an example of display of route guidance for a private vehicle route. In the figure, A indicates the current position, and B indicates the movement route. As shown in FIG. 6B, in the route guidance of the private vehicle route, the moving route and the current position are displayed on the map, like the route guidance of a general vehicle-mounted navigation device.

  Further, when voice guidance data is also transmitted from the route guidance center 2, for example, a voice message for guiding the traveling direction at an intersection or a branch point is reproduced and output from the voice output unit 14, for example. Route guidance for

  According to the above configuration, it is possible to perform route guidance on a multimodal route when it is estimated that the remaining charge amount of the mobile terminal 1 does not exist until the destination is reached on the private vehicle route. In the multimodal route, while using public transportation, the portable terminal 1 is switched to the power saving mode to suppress the power consumption. Therefore, the power consumption of the portable terminal can be surely kept lower than the private vehicle route.

  In addition, according to the remaining charge amount of the mobile terminal, it is possible to select the multimodal route that best matches the search condition from among the candidates for the multimodal route that can be used by the mobile terminal 1 up to the destination. For example, when the search condition is time-first, it is possible to reliably guide the user to the destination through a multimodal route with a shorter arrival time to the destination. In addition, if the search condition is toll priority, it is possible to reliably guide the user to the destination through a multimodal route with a lower traffic fee to the destination. Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

  In this embodiment, when a multimodal route that can reach the destination within the usable time of the mobile terminal 1 cannot be selected, the multimodal route that best matches the search condition is selected and route guidance is performed. Although the structure which performs is shown, it does not necessarily restrict to this. For example, the route guidance of the private vehicle route may be performed when the selection of the multimodal route that can reach the destination within the usable time of the mobile terminal 1 cannot be performed.

  In this embodiment, although the structure which estimates the usable time of the portable terminal 1 by the route search center 2 side was shown, it does not necessarily restrict to this. For example, it is good also as a structure which estimates the usable time of the portable terminal 1 by the portable terminal 1 side, and transmits to the route search center 2. FIG. In this case, based on the remaining charge amount of the portable terminal 1, the portable side control unit 16 performs the same process as the first usable time estimation process described above, thereby estimating the usable time of the portable terminal 1. What is necessary is just to be the structure to do.

  According to this, since the usable time of the mobile terminal 1 is estimated on the mobile terminal 1 side and transmitted to the route search center 2, there is an advantage that the processing load on the route search center 2 side can be reduced. is there. On the other hand, according to the configuration of the present embodiment, the usable time of the mobile terminal 1 is estimated on the route search center 2 side, so that the processing load on the mobile terminal 1 side can be reduced. There is. Further, since the processing load on the mobile terminal 1 side is reduced, there is an advantage that the power consumption of the mobile terminal 1 can be further suppressed.

  In the present embodiment, the configuration in which the mobile terminal 1 is automatically switched to the power saving mode while using public transportation is shown, but the present invention is not necessarily limited thereto. For example, the mobile terminal 1 may be configured not to automatically switch to the power saving mode. Even in the case of the above configuration, when it is estimated that there is no remaining charge amount of the mobile terminal 1 until reaching the destination by the private vehicle route, by performing route guidance of the multimodal route, It becomes possible to guide the user more reliably to the destination.

  Specifically, multimodal routes that include at least public transportation as a means of transportation do not require route guidance while using public transportation, so the user does not use screen display or voice output functions during route guidance. In many cases, the power consumption of the mobile terminal can be reduced by that amount. Therefore, by performing route guidance of the multimodal route that can keep the power consumption of the mobile terminal lower than that of the private vehicle route, the usable time of the mobile terminal is kept longer, and the user is more surely brought to the destination. It becomes possible to guide.

(Embodiment 2)
Next, the route guidance system in Embodiment 2 will be described. For convenience of explanation, members having the same functions as those shown in the drawings used in the description of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted. The second embodiment differs from the first embodiment in that it is premised on searching for a multimodal route.

  Here, processing related to route guidance according to the remaining charge amount of the mobile terminal 1 in the route guidance system 100 according to the second embodiment will be described with reference to FIG. FIG. 7 is a flowchart illustrating a flow of processing related to route guidance according to the remaining charge amount of the mobile terminal 1 in the route guidance system 100 according to the second embodiment. This flow is started when an operation input for setting a departure point and a destination is performed on the operation switch unit 15 of the mobile terminal 1 by the user.

  First, in step S31, the portable side control part 16 performs the destination setting process similarly to step S1, and moves to step S32. In step S32, a remaining charge amount consideration availability determination process is performed. In the remaining charge amount consideration availability determination process, the mobile-side control unit 16 determines whether or not the multimodal route guidance according to the remaining charge amount of the mobile terminal 1 may be performed (that is, whether or not the remaining charge amount can be considered). judge. Whether or not the remaining charge amount can be considered may be determined according to an input from the user to select whether or not to consider the remaining charge amount received by the portable control unit 16 via the operation switch unit 15. The mobile-side control unit 16 may be configured to prompt the user to select whether or not to consider the remaining charge amount by causing the display unit 13 to display whether or not to consider the remaining charge amount.

  If it is determined that multi-modal route guidance according to the remaining charge amount may be performed (that is, the remaining charge amount can be considered) (YES in step S32), the process proceeds to step S33. If it is determined that multi-modal route guidance according to the remaining charge amount should not be performed (that is, the remaining charge amount cannot be considered) (NO in step S32), the process proceeds to step S39.

  In step S33, a remaining charge amount-considered multimodal route search request process is performed, and the process proceeds to step S34. In the remaining charge amount-considered multimodal route search request process, a route search request including the departure and destination data set in step S31, the remaining charge amount data of the portable terminal 1, and the terminal type data of the portable terminal 1 is carried. The side control unit 16 creates and transmits it from the portable side communication unit 11 to the route search center 2.

  In step S34, the center side communication unit 21 of the route search center 2 receives the route search request transmitted in step S33, outputs it to the center side control unit 26, and proceeds to step S35. In step S35, as in step S9, the center-side control unit 26 performs a remaining charge amount-considered multimodal route search process, and proceeds to step S36.

  In step S36, when a multimodal route that can reach the destination within the usable time of the mobile terminal 1 is selected in the remaining charge amount-considered multimodal route search processing (YES in step S36), the process proceeds to step S37. . If a multimodal route that can reach the destination within the usable time of the mobile terminal 1 is not selected in the remaining charge amount-considered multimodal route search process (NO in step S36), the process proceeds to step S38.

  In step S37, as in step S11, the center-side control unit 26 performs reachable data transmission processing, and proceeds to step S17. In step S38, in the same manner as in step S12, the center side control unit 26 performs unreachable data transmission processing, and proceeds to step S44.

  In step S39, which is performed when it is determined in step S32 that route guidance for the multimodal route according to the remaining charge amount is not to be performed, normal multimodal route search request processing is performed, and the process proceeds to step S40. In the normal multimodal route search request processing, the mobile side control unit 16 creates a route search request including the departure point and destination data set in step S31 and transmits the route search request from the mobile side communication unit 11 to the route search center 2. Since it is necessary to identify the requesting mobile terminal 1 in the route search center 2, identification data for identifying the mobile terminal 1 such as a terminal ID and an e-mail address is added to the route search request and transmitted. Shall be.

  In step S40, the center side communication unit 21 of the route search center 2 receives the route search request transmitted in step S39, outputs it to the center side control unit 26, and proceeds to step S41. In step S41, normal multimodal route search processing is performed, and the process proceeds to step S42. In the normal multimodal route search process, data stored in each of the map DB 22, the public transport information DB 24, and the parking lot information DB 25 is used, and is included in the route search request in consideration of the above-described multimodal search conditions. A multimodal route that best matches the search conditions from the starting point to the destination is searched.

  In step S42, the center-side control unit 26 performs normal multimodal route transmission processing, and proceeds to step S43. In the normal multimodal route transmission process, the center side control unit 26 causes the center side communication unit 21 to transmit the data of the multimodal route searched in the normal multimodal route search process to the mobile terminal 1. In addition, the center-side control unit 26 adds voice guidance data, map data around the multimodal route, and drawing data to the multimodal route data and transmits the data to the mobile terminal 1.

  In step S43, based on data such as a multimodal route transmitted from the route guidance center 2, the portable side control unit 16 performs a multimodal route guidance process in the same manner as in step S17, and the flow ends. In step S44 subsequent to step S38, the mobile side control unit 16 performs the above-mentioned in-use time non-reachability notification based on the in-use time non-reachable data transmitted from the route guidance center 2, and the process proceeds to step S43. .

  According to the above configuration, it is possible to perform route guidance for a multimodal route according to the remaining charge amount of the mobile terminal 1. In addition, according to the remaining charge amount of the mobile terminal 1, it is possible to select a multimodal route that best matches the search condition from among the candidates for the multimodal route that the mobile terminal 1 can use to the destination. . Therefore, it is possible to improve the convenience for the user while allowing the user to be more surely guided to the destination.

  In the first embodiment and the second embodiment, the multimodal route that best matches the search condition is selected from among the candidates for the multimodal route that the mobile terminal 1 can use up to the destination according to the remaining charge amount of the mobile terminal 1. Although the configuration to be selected is shown, it is not necessarily limited to this. For example, the following configuration may be used. First, when the destination can be reached within the usable time of the mobile terminal 1 by the multimodal route that best matches the search condition, the multimodal route that best matches the search condition is selected. On the other hand, if the destination cannot be reached within the available time, a multimodal route that uses public institutions as close as possible to the destination (in other words, a multimodal route with a higher percentage of time using public transportation) ). In this case, it is preferable that a search is made so as not to search for a multimodal route that is detoured more than necessary by setting a predetermined limit such as a limit on the number of transfers and a total time limit.

  Here, an example of the above configuration will be described with reference to FIGS. 8A and 8B. FIG. 8A is a schematic diagram illustrating an example of a display of route guidance for a multimodal route that best matches the search condition. FIG. 8B is a schematic diagram showing an example of display of route guidance for a multimodal route using a public common organization as close as possible to the destination. In the figure, A indicates the current position, B indicates the movement route, and C indicates the destination. Further, D indicates a parking lot for transfer, and E1 and E2 indicate use start positions of public transportation (for example, E1 is a transfer station and E2 is a transfer bus stop). F1 and F2 indicate the use end positions of public transportation (for example, F1 is an exit station and F2 is an exit bus stop).

  As shown in FIGS. 8 (a) and 8 (b), compared to the multimodal route that best matches the search conditions, the multimodal route that uses a public common institution as close as possible to the destination is closer to the current position. Use public transport from the location and use public transport to a location closer to the destination. In this way, by increasing the proportion of time for using public transportation, the power consumption of the mobile terminal 1 can be kept low, and the user can be more reliably guided to the destination.

(Embodiment 3)
Next, the route guidance system in Embodiment 3 is demonstrated. For convenience of explanation, members having the same functions as those shown in the drawings used in the description of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted. The third embodiment is different from the first and second embodiments in that processing according to a change in the remaining charge amount of the mobile terminal 1 during route guidance is performed.

  First, a process according to a rapid decrease in the remaining charge amount of the mobile terminal 1 during route guidance will be described with reference to FIG. FIG. 9 is a flowchart illustrating an example of a process flow corresponding to a rapid decrease in the remaining charge amount of the mobile terminal 1 according to the third embodiment. This flow is started when route guidance for the above-described private vehicle route or multimodal route is started.

  In step S51, the portable-side control unit 16 performs unreachable risk determination processing, and proceeds to step S52. In the unreachable risk determination process, it is determined based on the remaining charge amount of the mobile terminal 1 whether or not the risk of the mobile terminal 1 becoming unusable becomes high before reaching the destination. Therefore, the portable side control part 16 is equivalent to the danger determination part of a claim. Specifically, the determination may be made as follows.

  First, in the mobile side control unit 16, a lower limit value of the decrease amount of the remaining charge amount per unit time is set so that the mobile terminal 1 can be used until it reaches the destination on the travel route during route guidance. Shall. For this lower limit value, for example, a value determined by the mobile side control unit 16 based on the remaining charge amount of the mobile terminal 1 at the departure point and the required time of the travel route may be set. The travel time required for the travel route may be calculated by the mobile side control unit 16 from the link travel time in the map data transmitted from the route search center 2 or the operation information of the public transportation. Therefore, the portable control unit 16 corresponds to a lower limit value determination unit and a third required time calculation unit in the claims. Alternatively, the travel time data of the travel route may be transmitted from the route search center 2, and the mobile side control unit 16 may acquire and use the travel time data.

  Then, the mobile side control unit 16 sequentially monitors the remaining charge amount of the mobile terminal 1 and determines whether the decrease amount per unit time of the remaining charge amount has exceeded the lower limit before reaching the destination. It is determined whether or not there is a high risk that the portable terminal 1 will become unusable (that is, there is a risk of being unusable before arrival).

  In addition, in this embodiment, although the structure which sets a lower limit with the portable side control part 16 was shown, it does not necessarily restrict to this. For example, the lower limit value may be determined on the route search center 2 side and transmitted to the mobile terminal 1. In addition, regarding the lower limit value, the mobile terminal use self-notification process described later is performed before the remaining charge amount of the mobile terminal 1 falls below the remaining charge amount that allows the mobile terminal 1 to be used until it reaches the destination. In order to do this, a value with some margin is set.

  Moreover, in this embodiment, the structure which determines whether there exists a risk of being unusable before arrival according to whether the decreasing amount per unit time of the remaining charge amount of the portable terminal 1 exceeded the lower limit value was shown. However, this is not necessarily the case. For example, from the above lower limit value and the remaining travel time to the destination, a remaining charge amount required to reach the destination (hereinafter referred to as a destination required charge amount) is sequentially determined, and the remaining charge of the mobile terminal 1 is determined. It may be configured to determine whether or not there is a danger of being unusable before arrival depending on whether or not the amount has reached this destination arrival necessary charge amount. Furthermore, it is good also as a structure which determines whether there exists danger of being unusable before arrival by another structure.

  If it is determined in step S52 that there is a risk of being unusable before arrival (YES in step S52), the process proceeds to step S53. If it is not determined that there is a danger of being unusable before arrival (NO in step S52), the process proceeds to step S59.

  In step S53, the mobile-side control unit 16 performs mobile terminal use self-notification processing, and proceeds to step S54. In the portable terminal use self-notification process, for example, a message to refrain from using the portable terminal 1 such as “Please refrain from using the portable terminal” as shown in FIG. The message may be output from the voice output unit 14 as a voice.

  In step S54, when the moving route during route guidance is a private vehicle route (YES in step S54), the process proceeds to step S55. If the route is a multimodal route (NO in step S54), the flow ends. In addition, when it is a multimodal route, it is good also as a structure which displays on the display part 13 the inquiry which asks whether the multimodal route which can reach | attain the destination within the usable time of the portable terminal 1 is performed. Then, when an input from the user for requesting re-search is made to the operation switch unit 15, the re-search of the multimodal route that can reach the destination within the usable time of the mobile terminal 1 is performed. It is good also as a structure which carries out the route guidance of the obtained multi-modal route to request | require.

  In step S55, the mobile-side control unit 16 performs a route switching inquiry process, and proceeds to step S56. In the route switching inquiry process, for example, as shown in FIG. 10B, a display for inquiring whether to switch to the multimodal route, such as “Remaining charge amount is low. 13 to do. In the present embodiment, the display is a touch panel display.

  In step S56, when the operation switch unit 15 is input to switch to the multimodal route ("Yes" selection in FIG. 10B), switching to the multimodal route (YES in step S56) and carrying The side control unit 16 determines and proceeds to step S57. Further, when an input indicating that switching to the multimodal route is not made is made to the operation switch unit 15 ("No" selection in FIG. 10B) is selected, it is not switched to the multimodal route (NO in step S56). The side control unit 16 determines and ends the flow.

  In step S57, similarly to step S33, the remaining charge amount-considered multimodal route search request process is performed, and the process proceeds to step S58. In the multi-modal route search request process in consideration of the remaining charge amount here, the current position data detected by the current position detection unit 12 is transmitted as the departure point data. In step S58, a multimodal route guidance process is performed in the same manner as in step S17, and the flow ends.

  In step S59 when it is not determined in step S52 that there is a danger of being unusable before arrival, it is determined whether or not the user has arrived at the destination in the same manner as in step S177. And when it determines with having arrived at the destination (it is YES at step S59), a flow is complete | finished. If it is not determined that the destination has been reached (NO in step S59), the process returns to step S51 and the flow is repeated.

  According to the above configuration, it is possible to prompt the user to refrain from using the mobile terminal 1 before the remaining charge amount decreases so that the mobile terminal 1 becomes unusable before reaching the destination. Therefore, the user can be more reliably guided to the destination. In addition, according to the above configuration, the remaining charge amount of the mobile terminal 1 rapidly decreases during route guidance on the private vehicle route, and there is a high risk that the mobile terminal 1 cannot be used before reaching the destination. In this case, the user can be more surely guided to the destination by switching to the route guidance of the multimodal route. Therefore, according to the change in the remaining charge amount of the mobile terminal, it is possible to always guide the user more reliably to the destination.

  Next, a process according to an increase in the remaining charge amount of the mobile terminal 1 during route guidance will be described with reference to FIG. FIG. 11 is a flowchart illustrating an example of a process flow according to an increase in the remaining charge amount of the mobile terminal 1 according to the third embodiment. This flow is started when route guidance for the above-described private vehicle route or multimodal route is started.

  In step S71, the portable control unit 16 performs a remaining charge amount increase determination process, and proceeds to step S72. In the remaining charge amount increase determination process, the remaining charge amount of the mobile terminal 1 is sequentially monitored to determine whether or not the remaining charge amount of the mobile terminal 1 has increased by a predetermined amount or more in a predetermined time. Here, the predetermined time and the predetermined amount are values that can be arbitrarily set.

  In step S72, the mobile-side control unit 16 performs a re-search inquiry process, and proceeds to step S73. In the re-search inquiry process, for example, as shown in FIG. 10C, a display for inquiring whether or not re-search is necessary, such as “Do you want to re-search the route”, is displayed on the display unit 13. In the present embodiment, the display is a touch panel display.

  In step S73, if an input for requesting a re-search is made on the operation switch unit 15 ("Yes" selection in FIG. 10C), there is a re-search request (YES in step S73) and the portable side The control unit 16 determines and moves to step S74. Further, when an input indicating that no re-search is requested is made on the operation switch unit 15 ("No" selection in FIG. 10C), there is no re-search request (NO in step S73), and the portable side control unit 16 determines and ends the flow. Therefore, the operation switch unit 15 corresponds to a re-search request input unit in claims.

  In step S74, the mobile-side control unit 16 performs route type inquiry processing, and proceeds to step S75. In the route type inquiry process, the display unit 13 is caused to display an inquiry as to which of the private vehicle route and the multimodal route is to be searched, such as “Do you want to search for a multimodal route?”.

  In step S75, when an input to search for a multimodal route is made to the operation switch unit 15, the portable control unit 16 determines that there is a multimodal route search request (YES in step S75), and step S76. Move on. In addition, when the operation switch unit 15 is input to search for a private vehicle route, the mobile side control unit 16 determines that there is no multimodal route search request (NO in step S75), and the process proceeds to step S78. .

  In step S76, similarly to step S33, the remaining charge amount-considered multimodal route search request process is performed, and the process proceeds to step S77. In the multi-modal route search request process in consideration of the remaining charge amount here, the current position data detected by the current position detection unit 12 is transmitted as the departure point data. In step S77, a multimodal route guidance process is performed in the same manner as in step S17, and the flow ends.

  In step S78, a normal route search request process is performed as in step S13, and the process proceeds to step S79. In the normal route search request processing here, the current position data detected by the current position detection unit 12 is transmitted as the departure point data. In step S79, a private vehicle route guidance process is performed in the same manner as in step S19, and the flow ends. For example, even during multimodal route guidance, if it is before the first transfer to public transportation, the user inputs to the operation switch unit 15 an input to search for a private vehicle route. It becomes possible to receive route guidance for private car routes.

  According to the above configuration, when the remaining charge amount of the mobile terminal 1 increases by a predetermined amount or more in a predetermined time, a more appropriate travel route according to the remaining charge amount is re-searched and route guidance can be performed. It becomes possible.

(Embodiment 4)
Next, the route guidance system in Embodiment 4 is demonstrated. For convenience of explanation, members having the same functions as those shown in the drawings used in the description of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted. The fourth embodiment is different from the first to third embodiments in that the portable terminal 1 can be manually switched to the power saving mode and can be switched to the power saving mode other than when using public transportation. is there.

  Here, processing related to manual switching of the power saving mode of the mobile terminal 1 in the fourth embodiment will be described with reference to FIG. FIG. 12 is a flowchart illustrating a flow of processing related to manual switching of the power saving mode of the mobile terminal 1 according to the fourth embodiment. This flow is started when route guidance for the above-described private vehicle route or multimodal route is started.

  First, in step S91, it is determined whether the user has arrived at the destination in the same manner as in step S177. And when it determines with having arrived at the destination (it is YES at step S91), a flow is complete | finished. If it is not determined that the destination has been reached (NO in step S91), the process proceeds to step S92.

  In step S92, the mobile-side control unit 16 performs an interruptability determination process, and proceeds to step S93. In the interruptability determination process, it is determined whether to permit or disallow the route guidance depending on whether or not the operation switch unit 15 has been input to permit the suspension of the route guidance for the moving route. .

  In step S93, when it is determined in the suspension availability determination process that the suspension of route guidance is permitted (YES in step S93), the process proceeds to step S93. If it is determined that the interruption of the route guidance is not permitted (NO in step S93), the process proceeds to step S94. Therefore, the operation switch part 15 is equivalent to the interruption availability input part of a claim.

  In step S94, the power saving mode execution process is performed in the same manner as in step S174, and the process returns to step S91 to repeat the flow. In the power saving mode here, it is preferable to stop a function necessary for route guidance. For example, it is preferable to stop the GPS function, the navigation function, the screen display function, and the voice output function. The power saving mode referred to here corresponds to the second power saving mode in the claims.

  In the present embodiment, in the power saving mode, for example, the GPS function, the navigation function, the screen display function, and the voice output function are stopped. Therefore, as shown in FIG. 13, when the route guidance is necessary, the route guidance of the moving route is performed, and when the route guidance is unnecessary, the screen display is turned off and the route guidance of the moving route is not performed. .

  In step S95, the route guidance for the moving route is continued, and the flow returns to step S91 to repeat the flow.

  According to the above configuration, while the route guidance for the moving route is unnecessary for the user, it is possible to switch to the power saving mode that suppresses the power consumption of the mobile terminal 1 according to the user's intention. Specifically, on a route that does not require route guidance for a user such as a place or area with a land intuition, the user inputs to the operation switch unit 15 permission to interrupt the route guidance of the moving route, so that GPS Functions, screen display and audio output functions can be stopped. Therefore, it is possible to further suppress power consumption while ensuring the effect of guiding the user more reliably to the destination.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Such embodiments are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Mobile terminal, 2 route search center (server apparatus), 11 mobile-side communication part, 12 present position detection part, 13 display part, 14 audio | voice output part, 15 operation switch part (public transport use termination input part, re-search request (Input unit, interruption availability input unit), 16 mobile side control unit (remaining charge amount acquisition unit, risk determination unit, lower limit determination unit, third required time calculation unit), 21 center side communication unit, 22 map DB, 23 Traffic information DB, 24 Public transport information DB, 25 Parking lot information DB, 26 Center side control unit (first usable time estimation unit, first required time calculation unit, reachability determination unit, multiple candidate search unit, second Usable time estimation unit, power consumption estimation unit when using public transportation, power consumption estimation unit when using non-public transportation, second required time calculation unit, arrival candidate determination unit), 100 route guidance system

Claims (28)

A portable terminal carried by the user, and a server device capable of communicating with the portable terminal,
Based on the information of the departure point and the destination transmitted from the portable terminal, the server device searches for a movement route that allows the user to reach the destination from the departure point, and provides route guidance of the searched movement route to the portable terminal. The route guidance system performed in
The portable terminal is
A remaining charge amount acquisition unit for acquiring the remaining charge amount of the mobile terminal;
The server device
As the travel route, both a private vehicle route that is a travel route when using only a private automobile and a multimodal route that is a travel route when using a plurality of travel means including at least public transportation and walking are searched. Is possible,
Based on the remaining charge amount of the mobile terminal, the server device selects one of the private vehicle route and the multimodal route, and provides route guidance on the selected travel route with the mobile terminal. A route guidance system characterized by performing. In claim 1,
The portable terminal is
Transmitting the remaining charge amount acquired by the remaining charge amount acquisition unit to the server device;
The server device
A first required time calculation unit for calculating a required time from the departure point to the destination by the private vehicle route;
Based on the remaining charge received from the portable terminal, a first usable time estimation unit that estimates the usable time of the portable terminal when traveling along the private vehicle route;
Reachability for determining whether the available time is less than the required time based on the available time estimated by the first available time estimating unit and the required time calculated by the first required time calculating unit. A determination unit,
The route guidance system, wherein the multimodal route is selected when the reachability determination unit determines that the available time is less than the required time. In claim 1,
The portable terminal is
Based on the remaining charge amount acquired by the remaining charge amount acquisition unit, further comprising a first usable time estimation unit that estimates the usable time of the mobile terminal when traveling by the private vehicle route,
Transmitting the usable time estimated by the first usable time estimating unit to the server device;
The server device
A first required time calculation unit for calculating a required time from the departure point to the destination by the private vehicle route;
A reachability determination unit that determines whether the available time is less than the required time based on the available time received from the portable terminal and the required time calculated by the first required time calculation unit; ,
The route guidance system, wherein the multimodal route is selected when the reachability determination unit determines that the available time is less than the required time. In any one of Claims 1-3,
The server device
A plurality of candidate search units for searching for a plurality of candidates for the multimodal route;
When selecting the multimodal route, the multimodal route is selected from the plurality of candidates searched by the plurality of candidate search units according to the remaining charge amount of the mobile terminal, and the selected multimodal route The route guidance system is characterized in that the route guidance is performed by the portable terminal. A portable terminal carried by the user, and a server device capable of communicating with the portable terminal,
Based on the information of the departure point and the destination transmitted from the portable terminal, the server device searches for a movement route that allows the user to reach the destination from the departure point, and guides the searched movement route with the portable terminal. A route guidance system,
The portable terminal is
A remaining charge amount acquisition unit for acquiring the remaining charge amount of the mobile terminal;
The server device
As the travel route, it is possible to search for a multimodal route that is a travel route when using a plurality of travel means including at least public transport and walking,
A plurality of candidate search units for searching for a plurality of candidates for the multimodal route;
When searching for the travel route in the server device, a multimodal route is selected from a plurality of candidates searched by the plurality of candidate search units according to the remaining charge amount of the mobile terminal, and the selected multi A route guidance system that performs route guidance of a modal route with the portable terminal. In claim 4 or 5,
The server device
A power consumption estimation unit when using public transport, which estimates power consumption of the mobile terminal when using the public transport,
Non-public transportation use power consumption estimation unit that estimates the power consumption of the mobile terminal when using a means of transportation other than the public transportation,
Remaining charge amount of the mobile terminal, multimodal route candidates searched by the plurality of candidate search units, power consumption when using the public transportation, and power consumption when using moving means other than the public transportation A second usable time estimation unit for estimating the usable time of the mobile terminal for the candidate,
A second required time calculation unit for calculating the required time from the departure point to the destination for the candidate;
Based on the available time of the mobile terminal for the candidate estimated by the second available time estimation unit and the required time for the candidate calculated by the second required time calculation unit, the available time A reaching candidate determination unit that determines whether or not the required time is exceeded,
A candidate that has been most matched with a search condition set in advance other than the condition that the available time is equal to or longer than the required time and that has been determined by the arrival candidate determination unit to be equal to or longer than the required time is the multimodal A route guidance system characterized by selecting as a route. In any one of Claims 1-6,
The portable terminal is
A risk determination unit that sequentially determines whether or not the risk of the mobile terminal becoming unusable before reaching the destination is increased based on the remaining charge amount of the mobile terminal during route guidance Prepared,
When the risk determination unit determines that there is a high risk that the mobile terminal becomes unusable before reaching the destination, the mobile terminal makes a presentation to refrain from using the mobile terminal. Feature route guidance system. In claim 7,
The portable terminal is
A third required time calculation unit for calculating a required time to the destination on the moving route performing the route guidance during the route guidance;
Based on the remaining charge amount of the mobile terminal and the required time calculated by the third required time calculation unit, the remaining charge amount per unit time for making the mobile terminal usable until reaching the destination A lower limit determining unit that determines a lower limit of the amount of decrease in the
When the amount of decrease in the remaining charge amount of the portable terminal per unit time exceeds the lower limit value determined by the lower limit value determining unit, the risk determination unit determines whether the portable terminal is before reaching the destination. A route guidance system for determining that the risk of becoming unusable has increased. In claim 7 or 8,
The risk determination unit determines that the risk of the mobile terminal becoming unusable before reaching the destination is high, and the travel route during route guidance is the private vehicle route. The mobile terminal makes a presentation asking whether or not to switch to the multimodal route,
When an input for switching to the multimodal route is received from the user at the mobile terminal, the server device searches for the multimodal route based on the remaining charge amount of the mobile terminal, A route guidance system that performs route guidance of a modal route with the portable terminal. In any one of Claims 1-9,
The portable terminal is
A re-search request input unit for the user to input to request re-search of the movement route;
When the remaining charge amount of the mobile terminal has increased by a predetermined amount or more during a route guidance, the mobile terminal presents an inquiry as to whether or not it is necessary to re-search for the travel route,
When an input requesting a re-search is received from the user by the re-search request input unit, the server device re-searches the movement route based on the remaining charge amount of the mobile terminal, A route guidance system which performs route guidance of a searched movement route with the mobile terminal. In any one of Claims 1-10,
The portable terminal is
A public transportation usage determination unit that determines whether or not the user is using public transportation;
During the route guidance of the multimodal route, the user switches to the first power saving mode, which is a mode for suppressing power consumption, while the public transportation use determination unit determines that the user is using public transportation. A route guidance system characterized by that. In claim 11,
The portable terminal is
It has a current position detection function for sequentially detecting the current position,
The route guidance system according to claim 1, wherein the first power saving mode is a mode for suppressing power consumption by intermittently starting at least the current position detection function. In claim 12,
The public transportation use determination unit determines that the current position is a public transportation route on the multimodal route based on the current position detected by the current position detection function and the multimodal route that is being routed. A route guidance system for determining whether or not a user is using public transportation according to whether or not the user is located. In claim 11,
The portable terminal is
It has a current position detection function for sequentially detecting the current position,
The first power saving mode is a mode for suppressing power consumption by stopping at least the current position detection function. In claim 14,
The portable terminal is
A public transport use end input unit for inputting that the user has ended the use of public transport;
The public transportation use determination unit is configured to determine whether the current position is located in public transportation on the multimodal route based on the current position detected by the current position detection function and the multimodal route during route guidance. In the case of detecting the user's use of public transport, while detecting the user's use of public transport based on receiving the input at the public transport use end input unit, A route guidance system for determining whether or not a user is using public transportation. In claim 13 or 15,
The public transport use determination unit determines that the user is not using public transport when the current position detected by the current position detection function is located on a passage connecting the public transports. Feature route guidance system. In any one of Claims 1-16,
The portable terminal is
During the route guidance, further comprising an interruption availability input unit for the user to input to indicate whether or not to interrupt the route guidance of the moving route,
The portable terminal from when an input indicating that the interruption of route guidance for the moving route is permitted is performed at the input unit for necessity of interruption until an input indicating that the interruption of the route guidance for the moving route is not permitted is performed A route guidance system that switches to a second power saving mode that is a mode that suppresses the power consumption of the vehicle. Along with being carried by the user, the information on the departure point and the destination is transmitted to the server device, and a travel route obtained by searching the server device that allows the user to reach the destination from the departure point is received. A mobile terminal that provides route guidance,
It has a remaining charge amount acquisition unit that acquires the remaining charge amount of its own terminal,
As the travel route, both a private vehicle route that is a travel route when using only a private automobile and a multimodal route that is a travel route when using a plurality of travel means including at least public transportation and walking are searched. The remaining charge amount acquired by the remaining charge amount acquisition unit is transmitted to the server device that is possible,
Receiving one of the travel routes of the private vehicle route and the multimodal route selected by the server device based on the remaining charge amount, and performing route guidance for the received travel route. A featured mobile terminal. Along with being carried by the user, the information on the departure point and the destination is transmitted to the server device, and a travel route obtained by searching the server device that allows the user to reach the destination from the departure point is received. A mobile terminal that provides route guidance,
A remaining charge acquisition unit for acquiring the remaining charge of the terminal;
Based on the remaining charge amount acquired by the remaining charge amount acquisition unit, a first usable time estimation unit that estimates the usable time of the mobile terminal during movement by the private vehicle route,
As the travel route, both a private vehicle route that is a travel route when using only a private automobile and a multimodal route that is a travel route when using a plurality of travel means including at least public transportation and walking are searched. The available time estimated by the first available time estimation unit is transmitted to the possible server device,
Receiving a travel route selected from the private vehicle route and the multimodal route selected by the server device based on the available time, and performing route guidance for the received travel route; A featured mobile terminal. Along with being carried by the user, the information on the departure point and the destination is transmitted to the server device, and a travel route obtained by searching the server device that allows the user to reach the destination from the departure point is received. A mobile terminal that provides route guidance,
It has a remaining charge amount acquisition unit that acquires the remaining charge amount of its own terminal,
As the travel route, it is possible to search for a multimodal route, which is a travel route when using a plurality of travel means including at least public transport and walking, and when selecting a multimodal route, Depending on the amount of charge, the remaining charge amount acquired by the remaining charge amount acquisition unit is transmitted to the server device that selects a multimodal route from among a plurality of multimodal route candidates,
A mobile terminal that receives a multimodal route selected by the server device based on the remaining charge amount and performs route guidance on the received multimodal route by the mobile terminal. In any one of Claims 18-20,
Based on the remaining charge amount of the terminal itself, further comprising a risk determination unit that sequentially determines during the route guidance whether or not the risk of the terminal becoming unusable before reaching the destination is increased,
A portable terminal characterized in that, when the risk determination unit determines that there is a high risk that the terminal will become unusable before reaching the destination, the mobile terminal presents that the terminal is not used. In any one of Claims 18-21,
A public transportation usage determination unit that determines whether or not the user is using public transportation;
During the route guidance of the multimodal route, the user switches to the first power saving mode, which is a mode for suppressing power consumption, while the public transportation use determination unit determines that the user is using public transportation. A portable terminal characterized by that. In any one of Claims 18-22,
A suspension availability input unit for allowing the user to input to indicate whether or not the route guidance for the travel route is suspended;
Consumption of the terminal itself from the input indicating that the interruption of the route guidance of the moving route is permitted in the input unit for whether or not the interruption is permitted until the input indicating that the interruption of the route guidance of the moving route is not permitted is performed A portable terminal characterized by switching to a second power saving mode, which is a mode for suppressing power. Search for a travel route that allows the user to reach the destination from the departure location based on the information of the departure location and the destination transmitted from the mobile device, and is capable of communicating with the mobile device carried by the user. A server device that transmits the travel path that has been performed to the mobile terminal,
As the travel route, both a private vehicle route that is a travel route when using only a private automobile and a multimodal route that is a travel route when using a plurality of travel means including at least public transportation and walking are searched. Is possible,
Receiving the remaining charge amount of the mobile terminal transmitted from the mobile terminal;
A first required time calculation unit for calculating a required time from the departure point to the destination by the private vehicle route;
Based on the remaining charge received from the portable terminal, a first usable time estimation unit that estimates the usable time of the portable terminal when traveling along the private vehicle route;
Reachability for determining whether the available time is less than the required time based on the available time estimated by the first available time estimating unit and the required time calculated by the first required time calculating unit. A determination unit,
The server device, wherein the multimodal route is selected when the reachability determination unit determines that the available time is less than the required time. Search for a travel route that allows the user to reach the destination from the departure location based on the information of the departure location and the destination transmitted from the mobile device, and is capable of communicating with the mobile device carried by the user. A server device that transmits the travel path that has been performed to the mobile terminal,
As the travel route, both a private vehicle route that is a travel route when using only a private automobile and a multimodal route that is a travel route when using a plurality of travel means including at least public transportation and walking are searched. Is possible,
Received from the portable terminal, the usable time estimated from the remaining charge amount of the portable terminal when traveling by the private car route,
A first required time calculation unit for calculating a required time from the departure point to the destination by the private vehicle route;
A reachability determination unit that determines whether the available time is less than the required time based on the available time received from the portable terminal and the required time calculated by the first required time calculation unit; ,
The server device, wherein the multimodal route is selected when the reachability determination unit determines that the available time is less than the required time. In claim 23 or 24,
A plurality of candidate search units for searching for a plurality of candidates for the multimodal route;
When selecting the multimodal route, the multimodal route is selected from a plurality of candidates searched by the plurality of candidate search units according to the remaining charge amount of the mobile terminal. . Search for a travel route that allows the user to reach the destination from the departure location based on the information of the departure location and the destination transmitted from the mobile device, and is capable of communicating with the mobile device carried by the user. A server device that transmits the travel path that has been performed to the mobile terminal,
As the travel route, it is possible to search for a multimodal route that is a travel route when using a plurality of travel means including at least public transport and walking,
A plurality of candidate search units for searching for a plurality of candidates for the multimodal route;
The mobile terminal receives the remaining charge amount of the mobile terminal transmitted from the mobile terminal, and when searching for the movement route, according to the remaining charge amount of the mobile terminal, a plurality of candidates searched by the multiple candidate search unit The server apparatus characterized by selecting a multimodal route from the house. In claim 26 or 27,
A power consumption estimation unit when using public transport, which estimates power consumption of the mobile terminal when using the public transport,
Non-public transportation use power consumption estimation unit that estimates the power consumption of the mobile terminal when using a means of transportation other than the public transportation,
Remaining charge amount of the mobile terminal, multimodal route candidates searched by the plurality of candidate search units, power consumption when using the public transportation, and power consumption when using moving means other than the public transportation A second usable time estimation unit for estimating the usable time of the mobile terminal for the candidate,
A second required time calculation unit for calculating the required time from the departure point to the destination for the candidate;
Based on the available time of the mobile terminal for the candidate estimated by the second available time estimation unit and the required time for the candidate calculated by the second required time calculation unit, the available time A reaching candidate determination unit that determines whether or not the required time is exceeded,
A candidate that has been most matched with a search condition set in advance other than the condition that the available time is equal to or longer than the required time and that has been determined by the arrival candidate determination unit to be equal to or longer than the required time is the multimodal A server device that is selected as a route.

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