JP2007322228A - Information-providing system and navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information-providing system that provides information to a vehicle, correspondent to a change in a user's taste, and to provide a navigation system. <P>SOLUTION: In this information-providing system that provides information to the vehicle 4 from a server 2 connected thereto via a network 1, the vehicle 4 comprises a destination input means 130 for thereinto inputting a destination, a destination history storage means 141 therein storing taste value, showing the degree of taste of the user, in association with an installation existing in the destination, and a taste value setting means 12 for detecting the user's taste in the installation to adjust the taste value; and the server 2 comprises an installation information storage means 241 therein for storing installation information on the installation and a transmission part 22 transmitting the installation information extracted from the information storage means. The vehicle 4 is characterized comprising a determination part 16 for deciding whether the installation information transmitted from the server 2 is updated to cause information on an installation to be displayed on a display means 150, with the installation having a high taste value among installations with installation information thereof that are updated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an information providing system and a navigation system that provide information to a user, and more particularly to an information providing system and a navigation system that acquire information from a server connected via a network and provide the information to the user.

  An information provision system is proposed in which a navigation system installed in a vehicle automatically provides nearby restaurants and sightseeing information according to the current position of the vehicle while the user is moving toward the destination by the vehicle (For example, refer to Patent Document 1).

Moreover, even if it is drive | working the same position, since the preference for every user differs, the information provision apparatus which registers a user's favorite event information for every user is proposed (for example, refer patent document 2). Since event information is registered in advance, it is possible to display the route to the event location simply by selecting the desired event. For example, the location of events that are held regularly but the location is undefined Etc. can be obtained from the server and provided to the user.
JP 2004-199283 A JP 2003-337850 A

  However, in the information providing apparatus described in Patent Document 2, the number of events that can be provided with information does not increase unless the user registers. Therefore, when the user's preference changes or the number of desired events increases, the user's preference can be quickly increased. There is a problem that it cannot be reflected.

  That is, in such an information providing system, providing information based only on the current position of the vehicle does not conform to the user's preference, and providing information based only on past settings provides the user's preference. It becomes difficult to respond to changes in preferences.

  In view of the above problems, an object of the present invention is to provide an information providing system and a navigation system that can provide information from a vehicle in response to a change in user's preference.

  In order to solve the above-mentioned problems, the present invention provides an information providing system for providing information to a vehicle from a server connected via a network, wherein the vehicle has a destination input means for inputting a destination, and a facility at the destination. And a destination history storage unit that stores a preference value indicating the degree of preference of the user, and a preference value setting unit that detects the user's preference for the facility and increases or decreases the preference value (for example, the preference value calculation unit 12 ), And destination history storage means that stores preference values in association with facilities, and the server has facility information storage means for storing facility information of the facilities, and facility information storage means The vehicle has a transmission unit that transmits the facility information extracted from the vehicle, and the vehicle has a determination unit that determines whether or not the facility information transmitted from the server is updated, and the facility information is updated. Taste among facilities Is displayed on the display means is higher facility information, characterized in that.

  It is possible to provide an information providing system and a navigation system that can provide information from a vehicle in response to a change in user preference.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows an overall configuration diagram of an information providing system according to the present embodiment. The information providing system transmits a list of facilities preferred by the user from the vehicle 4 to the server 2, and transmits facility information of the facilities on the list from the server 2 to the vehicle 4. Whether or not the facility is preferred by the user is increased or decreased each time the destination is set, thereby providing information on the facility preferred by the user in response to a change in the preference of the user.

  The server 2 is connected to a network 1 such as the Internet. A navigation system (hereinafter simply referred to as a navigation system) 10 of the vehicle 4 is configured to be able to communicate with a base station 3 connected to the network 1 by wireless or wired communication. For example, the base station 3 to the server 2 are connected by a public telephone switching network (PSTN), a digital communication network (ISDN), or an optical fiber cable, and the base station 3 to the vehicle 4 are mobile phones. Wireless connection such as network, PHS (Personal Handy-phone System) network, wireless LAN, WiMAX (Worldwide Interoperability for Microwave Access), satellite phone, beacon, etc. For data transmission / reception, for example, HTTP (Hyper Text Transfer Protocol), FTP (File Transfer Protocol), MIME (Multipurpose Internet Mail Extension), etc. that are upwardly compatible with protocols such as TCP (Transmission Control Protocol) / IP (Internet Protocol). Protocol is used.

  FIG. 2A shows a block diagram of the navigation system 10. The navigation system 10 includes a navigation ECU (Electronic Control Unit) 100 that controls the navigation system, a GPS receiver 120 that receives radio waves from a GPS (Global Positioning System) satellite, an input device 130 for inputting operations from a user, It has a storage device 140 for storing a destination history 141, a road map 142, user authentication information, etc., which will be described later, and a display device 150 for displaying an electronic map and facility information.

  The navigation ECU 100 stores a CPU (Central Processing Unit) that executes a program, a ROM (Read Only Memory) that stores a program, a RAM (Random Access Memory) that temporarily stores data and a program, and holds even when the power is turned off. An NV-RAM (Non-Volatile RAM) that stores information to be stored, a communication unit that communicates with other ECUs, an input / output interface that inputs and outputs data, and the like are configured as a microcomputer.

  The GPS receiver 120 preferably selects four or more GPS satellites that enter a predetermined elevation angle from the current vehicle position among a plurality of GPS satellites orbiting a predetermined orbit, and transmits radio waves transmitted from these GPS satellites. Receive. Note that a radio wave for positioning the position may be received not by the satellite but by a ground base station whose position is known.

  Since the radio wave transmitted by the GPS satellite is modulated with a pseudo-random code whose carrier wave is fixed for each satellite, the GPS receiver 120 generates a pseudo-random code of the selected GPS satellite and demodulates the received radio wave. At the same time, a code replica of the pseudo random code is generated, and the arrival time of the radio wave is calculated based on the phase difference. Multiplying the arrival time by the speed of light c gives the distance to the captured GPS satellite, so the position where the distance to the four satellites intersects one point (ideally) on the ground is the current position of the vehicle (latitude, longitude, altitude). Is output to the navigation ECU 100. The navigation ECU 100 estimates the position of the host vehicle with high accuracy by autonomous navigation using a vehicle speed sensor and a gyro sensor, and maps it on the map by a map matching method that associates the estimated position of the host vehicle with the road map. The position of the host vehicle to be displayed is determined with high accuracy.

  The communication unit 110 is connected to a cellular phone network or a wireless LAN, modulates and demodulates radio waves carrying data, and transmits / receives data to / from the server 2.

  The input device 130 includes a push-down keyboard, buttons, a remote controller, a cross key, a touch panel, and the like, and accepts operations from the driver and passengers. Further, an operation may be input by providing a microphone and recognizing a voice emitted by the driver by a voice recognition circuit. For example, the destination can be set by an address, a postal code, a telephone number, a landmark name, or the like.

  The display device 150 is a liquid crystal, organic EL, HUD (Head Up Display), or the like, and displays facility information, operation menus, traffic information, a road map, a route to a destination, and the like. Further, the display device 28 can be provided with a touch panel and used as a part of the input device 130. Facility information and route guidance may be output from a speaker such as a voice. The display device 150 and the speaker are also used for output from other media such as televisions and radios, music players, and DVD (Digital Versatile Disk) players.

  The storage device 140 is configured by a recording medium such as a hard disk, a rewritable DVD, or a flash memory. The recording device 140 stores a road map 142, and road map information such as a road network and intersections is stored in association with latitude and longitude. The road map is configured as a table-like database by associating an actual road network with nodes (points where roads and roads intersect, ie, intersections) and links (roads connecting nodes and nodes). Further, the storage device 140 stores a destination history 141 described later in which destinations set in the navigation system 10 are stored.

  FIG. 2B shows a block diagram of the server 2. The server 2 includes a CPU 210. The CPU 210 stores a ROM 220, which is a read-only memory storing a BIOS, a RAM 230 that functions as a work area for the CPU 210, stores various data in a rewritable manner, and stores parameters and the like. The NV-RAM is connected to the bus 290 to constitute a computer. Further, on the bus 290, for example, an HDD storage device 240 storing an OS (Operating System), programs, and files, a drive device 250 that reads the storage medium 280, and a NIC (Network Interface Card) for connecting to the network 1. 260 is connected. As the storage medium 280, various types of media such as various optical disks such as CD-ROM and DVD, various magneto-optical disks, and semiconductor memories can be used.

  The storage device 240 stores facility information 241 to be described later as information on various facilities. Facilities include parks, amusement facilities, sights, natural terrain, hot springs, aquariums, amusement parks, theme parks, museums, historic buildings, department stores, restaurants, leisure lands, tourist spots, baseball fields, soccer fields, concerts, It refers to all objects that may be used as destinations by vehicles, such as a flea market, and may simply pass through regardless of whether the vehicle is parked or not. In addition, the facility is a feature existing at the position of the destination, but the destination and the facility may coincide.

  FIG. 3 is a functional diagram of the navigation ECU 100 and the server 2. The navigation ECU 100 includes an activation processing unit 11, a preference value calculation unit 12, a facility list creation unit 13, a data transmission unit 14, a data reception unit 15, and a determination unit 16.

  When the CPU of the navigation ECU 100 executes a program stored in the ROM or the storage device 140, the activation processing unit 11, the preference value calculation unit 12, the facility list creation unit 13, the data transmission unit 14, the data reception unit 15, and the determination unit 16 Realized.

  The activation processing unit 11 monitors activation of the navigation system 10 when the power is turned on. When the power-on is detected, the activation processing unit 11 notifies the preference value calculation unit 12 of the start of processing in order to propose a recommended facility to the user.

  The preference value calculation unit 12 calculates the preference value of each facility set as the destination from the destination history 141, and notifies the facility list creation unit 13 of the top number of facilities having a high preference value. The preference value indicates that the user likes the facility, and the larger the preference value, the higher the possibility that the user will like the facility.

The preference value calculation unit 12 calculates a preference value based on the following increase / decrease factors of the preference value.
(A) Increase the preference value when set as the destination (b) Increase the preference value when guidance is provided to the end of the destination (c) When the destination is deleted during the guidance The preference value is decreased. (D) The facility information in the destination history is decreased (decreased in descending order) for each fixed period of time. (E) When the user selects “go to proposed facility” at the time of proposal (F) The preference value is decreased when the user selects “Don't go to the proposed facility” at the time of proposal. (G) The preference value when the user selects “Go next time” at the time of proposal. (H) ・ When a facility of a predetermined genre (amusement park, movie theater, etc.) is selected, a preference value is also given to a facility of the same genre in the destination history 141 (Increase the amount of increase smaller than (a) .).
-When a parking lot that is affiliated with a facility is set as the destination, the preference value is increased for the facility (the amount of increase is made smaller than (a)).

  Based on such factors, the preference value calculation unit 12 changes the preference value in a range from “−AAA to + ZZZ”, and determines that the user is highly likely to prefer a facility having a certain preference value or more. Then, the facility list creation unit 13 is notified.

The increase / decrease value of each preference value of a) to h) is a design matter. For example, when each increase / decrease value is A to H (both positive values), the increase amount when increasing is as follows:
Increase: A>E>B> H
The amount of decrease is as follows.
Reduction amount: | -F |> | -D |> | -C |> | -G |
The facility list creation unit 13 creates the top several facility lists of facilities with high preference values passed from the preference value calculation unit 12. The created facility list is sent to the data transmission unit 14.

  The data transmission unit 14 transmits the facility list created by the facility list creation unit 13 to the server 2 using the communication unit 110.

  The data receiving unit 15 receives the facility information extracted by the server 2 based on the facility list transmitted to the server 2 using the communication unit 110. The received facility information is sent to the determination unit 16.

  The determination unit 16 determines whether there is a change (updated one) in the facility information transmitted from the server 2, and if there is a change in the facility information, the determination is made from the changed facility information. The facility information of the facility having the highest preference value is transmitted to the display device 150. Note that the facility list may be sent to the display device 150 so as to display the facility list of the top several preference values as they are.

  Whether or not it has been updated is determined, for example, based on whether or not a predetermined event (movie, attraction, etc.) has been held for the facility after the last set date as the destination. The facility whose holding period is set after the last date set as the destination is highly likely to be liked by the user, and the event is updated. Displaying the facility information of such a facility is beneficial for users who have forgotten to go to the event. Whether the information has been updated may be determined by storing the transmitted facility information for a predetermined period and comparing the pieces of update information.

  The display device 150 displays the notified facility information and proposes a recommended facility to the user. When making a proposal, an evaluation input button is displayed on the screen of the touch panel so that the user can input the evaluation of the facility displayed together with the facility information, or the user is prompted to input the evaluation.

  FIG. 4A shows an example of facility information and an evaluation input button displayed on the display device 150. In FIG. 4A, three evaluation input buttons of “go to the proposed facility”, “not go to the proposed facility”, and “go next” are displayed together with the facility information of the movie theater. The user's evaluation is input when the user selects one of the three evaluation input buttons using the input device 130.

  FIG. 4C is a diagram illustrating an example of the destination history 141 stored in the storage device 140. The destination history 141 stores information such as the position information of the destination set as the destination, the set date set as the destination, and the preference value calculated by the preference value calculation unit 12. In FIG. 4C, “Movie Theater A” and “Movie Theater B” are stored as examples of destinations. The registered destination refers to a place that “has been”, “has been set as a destination”, or “has been proposed as a destination”, that is, it has not necessarily been to the destination. That is not required.

  No destination is stored in the destination history in the initial state, and the destination and the preference value may be registered as the user uses the navigation system 10, for example, by inputting a questionnaire result to the user The initial destination according to the user's preference may be registered.

  Next, a functional diagram of the server 2 will be described with reference to FIG. The receiving unit 21 receives the facility list transmitted from the navigation system 10 using a communication device such as the NIC 260.

  The acquisition unit 23 extracts information on each facility described in the facility list from the facility information 241. FIG. 4B shows an example of facility information 241 stored in the storage device 240. The facility information 241 stores information for using the facility, such as the facility opening (opening) time, the event content, and the venue, in association with the facility. For example, when the facility is a movie theater, the name of the movie to be screened, the screening period, etc., and when the facility is an amusement park, the name of the attraction, available time, etc.

  In addition, the facility information 241 keeps the latest information by repeating the update of the information of each facility periodically or in response to an update notification like RSS (Rich Site Summery). The server 2 may not be one, and the server 2 may have a search engine that searches for facility information.

  The transmission unit 22 transmits facility information to the navigation system 10 using a communication device such as the NIC 260.

  A procedure in which the navigation ECU 100 proposes a facility that matches the user's preference based on the preference value using the above configuration will be described with reference to the flowchart of FIG.

  In addition, since one vehicle may be used by a plurality of users, it is preferable to perform user authentication when boarding. User authentication can be performed by biometric information such as veins and fingerprints, password input, and the like.

  When the navigation system 10 is powered on, the activation processing unit 11 performs predetermined initial settings such as initialization of the navigation ECU 100, acquisition of the current position, reading of map data, and the like. And the starting process part 11 starts the destination proposal process based on a preference value (S101).

  When the destination proposal process is started, the preference value calculation unit 12 acquires the destination history of the user stored in the destination history 141 (S102). The last set date of each facility and the calculated preference value are already added to the destination history.

  Next, the preference value calculation unit 12 calculates the preference value of each facility (S103). Specifically, the preference value is decremented every time a certain period elapses from the last purpose setting date of each facility from the preference value already added. Therefore, the preference value decreases as the last purpose setting date becomes in the past.

  After the preference value is subtracted according to the final destination setting date, the preference value calculation unit 12 determines whether or not there is a destination having a preference value equal to or higher than the reference value in the stored destination setting history (S104). . The reference value is, for example, an average of preference values, a positive preference value, or a number of higher preference values.

  If the destination setting history equal to or greater than the reference value is not stored (No in S103), the process is terminated assuming that there is no facility that can be proposed to the user.

  When the destination setting history equal to or greater than the reference value is stored (Yes in S103), the facility list creation unit 13 creates a facility list for the facility having the destination setting history whose preference value is equal to or greater than the reference value (S105). In the facility list, the facility name, genre, preference value, and the last set date of the destination are described.

  Next, the data transmission unit 14 transmits the facility list to the server 2, and the data reception unit 15 acquires the latest facility information of each facility (S106). The information to be acquired is, for example, the presence / absence of an event of the facility, the holding period, and the event content for the facility in the facility list.

  The data receiving unit 15 confirms whether the facility information has been successfully acquired from the server 2 (S107). If it has not been acquired normally (No in S107), the process ends. Note that facility information may be requested from the server 2 again.

  When it is normally acquired (Yes in S107), the determination unit 16 checks whether there is a change in the facility information in descending order of the preference value of the facility list created in Step S105 (S108). The reason for determining whether or not the facility information has changed is to determine whether or not any new event is being held. For example, if the last set date of the facility is not within the event holding period, it is determined that the facility information has changed. When there is no change in all the facility information (No in S108), the determination unit 16 ends the process as it is.

  When there is a change in the facility information (Yes in S108), the determination unit 16 causes the display device 150 to display the facility information of the facility in which the facility information has changed (S109). The facility information to be displayed is displayed, for example, in order from the highest preference value. As shown in FIG. 4A, an evaluation input button is displayed together with facility information.

  The user views the facility information and inputs an evaluation such as “go to the proposed facility” from the evaluation input button or the like.

  Next, the preference value calculation unit 12 determines whether or not an evaluation of “go to the proposed facility” has been input (S110). When “go to the proposed facility” is selected (Yes in S110), the preference value calculation unit 12 increases the preference value of the selected facility (for example, an increase amount E), and updates the destination history 141 To do.

Further, the preference value calculation unit 12 determines whether or not there is an input of “next time” evaluation (S112). When an evaluation “go next time” is input from the user, the preference value calculation unit 12 decrements the preference value of the selected facility (for example, a decrease amount G), and the destination history 141
Is updated (S114).

If the evaluation “go next time” is not input from the user (No in S112), the preference value calculation unit 12 greatly decreases the preference value of the selected facility (for example, a decrease amount F), and the destination history 141
Is updated (S113).

  As described above, a facility according to the user's preference can be proposed to the user. The user's preference is determined according to the preference value, and the preference value is increased or decreased each time based on the evaluation from the user, so that the change in the user's preference can be reflected quickly. Moreover, since the facility in which the facility information has changed among the facilities having a high preference value is proposed, information on the facility that the user likes can be proposed at an appropriate timing.

  Next, a procedure for increasing or decreasing the preference value according to the destination set by the preference value calculation unit 12 will be described with reference to the flowchart of FIG. FIG. 5B illustrates calculation of a preference value when the user sets a desired destination in the navigation system 10.

  When the user inputs a destination to the navigation system 10, the preference value calculation unit 12 starts calculating the preference value (S201).

  The preference value calculation unit 12 determines whether or not the parking lot is affiliated with a facility having a set destination (S202). Whether or not it is an affiliated parking lot can be determined by whether or not there is a facility (hereinafter referred to as an affiliated facility) associated with the destination parking lot on the road map 142 of the storage device 140. If it is not a parking lot affiliated with an affiliated facility (No in S202), the process proceeds to step S205.

  If the parking lot is affiliated with the affiliated facility (Yes in S202), it is determined whether the affiliated facility is stored in the destination history 141 (S203). If the partner facility is not stored in the destination history 141 (No in S203), the process proceeds to step S205.

  When the partner facility is stored in the destination history 141, the preference value calculation unit 12 increases the preference value of the partner facility in the destination history 141 because it is substantially equivalent to setting the partner facility as the destination. (S204). That is, the preference value calculation unit 12 increases the preference value of the affiliated facility and updates the destination history 141. The increase amount is, for example, H.

  With such a process, when using a large facility where the parking lot and the facility are separated from each other, even if the user directly sets the parking lot as the destination, the preference value of the partner facility can be increased. The preference value can be increased reflecting the preference.

  Next, the preference value calculation unit 12 determines whether a facility of the same genre as the facility set as the destination or the partner facility is stored in the destination history 141 (S205). Since it can be determined that the facility of the same genre (for example, movie theater) as the set destination has a strong tendency to be preferred by the user, if there is a facility of the same genre in the destination history 141 (No in S205), the preference value calculation unit 12 increases and updates the preference value of facilities of the same genre in the destination history 141 (S206). The increase amount in this case is H, for example.

  Next, the preference value calculation unit 12 also increases the preference value for the destination facility set in step S201 (S207). The increase amount in this case is A, for example. If the set destination is not yet stored in the destination history 141, it is registered as a new destination facility and an initial preference value (for example, zero) is set.

  Next, the navigation ECU 100 searches for a route to the set destination and starts route guidance (S208).

  Then, it is determined whether route guidance has been carried out to the destination (S209). When the route guidance to the destination is made (Yes in S209), it can be determined that the user's preference for the facility is strong, so the preference value of the destination facility is increased and the destination history 141 is updated (S210). The increase amount in this case is B, for example.

  If the guidance is not completed until the destination is completed (No in S209), it can be determined that the user's preference for the facility is low, so the preference value of the facility at the set destination is subtracted. The destination history 141 is updated (S211). In this case, the amount of decrease is C, for example.

  As described above, according to the portable information provision system of the present embodiment, the user preference value can be increased or decreased each time the destination is set, so that the facility can be provided based on the latest user preference. it can. Since the increase / decrease amount of the preference value is determined by an index indicating the degree of preference (whether or not the destination is reached or the like), it can be set to a preference value that accurately reflects the user's preference. In addition, even when the user sets the parking lot as the destination, the preference value of the affiliated facility can be increased. Therefore, the preference value of the facility can be accurately increased even when the user normally uses the navigation system 10. Can do. Furthermore, since the preference value of facilities of the same genre as the set facility can be increased uniformly, it is possible to easily provide facilities that are highly likely to be preferred by the user.

1 is an overall configuration diagram of an information providing system. It is a block diagram of a navigation system and a server. It is a functional diagram of a navigation ECU and a server. It is a figure which shows an example of the displayed facility information and destination history. It is a flowchart figure which proposes the facility which suits a user's taste based on a taste value, and a flow chart figure which increases / decreases a taste value according to a set destination.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Network 2 Server 3 Relay device 4 Vehicle 10 Navigation system 11 Startup processing part 12 Preference value calculation part 13 Facility list preparation part 14 Data transmission part 15 Data reception part 16 Judgment part
21 Receiver
22 transmission unit 23 acquisition unit 100 navigation ECU
110 Communication Unit 120 GPS Receiver 130 Input Device 140 Storage Device 150 Display Device

Claims (7)

In an information providing system for providing information to a vehicle from a server connected via a network,
The vehicle includes destination input means for inputting a destination,
A destination history storage means for storing a preference value indicating the degree of preference of the user in association with the facility at the destination;
A preference value setting means for detecting the user's preference for the facility and increasing or decreasing the preference value;
The server
Facility information storage means for storing facility information of the facility;
A transmission unit that transmits the facility information extracted from the facility information storage means to the vehicle;
The vehicle includes a determination unit that determines whether or not the facility information transmitted from the server has been updated.
The information providing system, wherein the facility information having a high preference value among the facilities in which the facility information is updated is displayed on a display unit. The preference value setting means increases the preference value of the facility as the number of times of input of the destination increases, and decreases the preference value as the facility has entered in the past.
The information providing system according to claim 1. The preference value setting means increases or decreases the preference value of the facility according to whether or not the facility of the facility information displayed on the display means is input as a destination from the destination input means.
The information providing system according to claim 1. The determination unit determines whether the facility information has been updated based on a date when the facility is set as a destination and a holding period of an event held at the facility.
The information providing system according to claim 1. The destination history storage means stores the genre information of the facility for each facility,
The preference value setting means links and increases or decreases the preference value of the facility of the same genre.
The information providing system according to claim 1. The preference value setting means, when a parking lot is set as the destination by the destination input means, extracts the facility associated with the set parking lot from map data, and calculates the preference value of the facility. Increase,
The information providing system according to claim 1. In a vehicle navigation system that displays facility information provided from a server connected via a network,
A destination input means for inputting a destination;
A destination history storage means for storing a preference value indicating the degree of preference of the user in association with the facility at the destination;
A preference value setting means for detecting a user preference for the facility and increasing or decreasing the preference value;
A determination unit that determines whether or not the facility information transmitted from the server has been updated,
The navigation system characterized in that the facility information having a high preference value among the facilities in which the facility information has been updated is displayed on a display means.

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