JP2010145220A - In-vehicle unit, display method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow provision of dynamic information about only an incidental parking lot to a freeway when a vehicle with an in-vehicle unit mounted therein is traveling on the freeway. <P>SOLUTION: The in-vehicle unit includes: a display part 1e; a DSRC part 3 or IP communication part 5 transmitting and receiving data to/from a center apparatus; a current position detection part 1b detecting the current position information; a map storage part 1c storing a map DB including road information and facility information; and a control part 4 which extracts dynamic information about a parking lot of incidental facilities to the freeway existing in the forward traveling direction from parking lot dynamic information and causes the display part 1e to display the extracted dynamic information when it is determined that the vehicle travels on the freeway on the basis of the current position information and the map DB and when the parking lot dynamic information including dynamic information indicating the congestion state of the plurality of parking lots is received by the center apparatus. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted device, a display method, and a program.

  Conventionally, in-vehicle devices such as navigation devices have a function to display the guidance route to the destination, a parking lot around the road to the destination and a search function for the designated parking lot, parking hours, and parking Some of them have a function of displaying static information related to parking lots such as vehicle restriction information, parking fees, and the like, a function of displaying information (dynamic information) of congestion status of designated parking lots, and the like.

  In such a vehicle-mounted device, when a vehicle equipped with the vehicle-mounted device is traveling on a highway (such as a highway or a motorway), a parking lot (service area (SA) or parking area) attached to the highway. Some have a function of a highway mode for displaying facility information such as (PA)).

For example, in the case of highway mode, when the vehicle position approaches a predetermined range to a facility such as SA / PA, the layout of the facility of the facility is displayed from the storage means, and the congestion status of each block of the parking lot of the facility is displayed. A navigation device that displays images in different modes depending on the degree of congestion is disclosed (see Patent Document 1).
JP 2004-108937 A

  However, in patent document 1, acquisition of the dynamic information which shows the congestion condition of a parking lot is not described in detail. For example, when the on-board device designates a parking lot of a facility whose layout is displayed and acquires dynamic information for the designated parking lot, the center device that distributes the dynamic information of the parking lot Only dynamic information needs to be sent. In this case, if the latitude / longitude indicating the location of the parking lot is used as the designation of the parking lot, a parking lot along a general road other than SA or PA parallel to the expressway is searched, and the parking lot Dynamic information may be sent.

  In view of the above problems, an object of the present invention is to enable provision of dynamic information only for a parking lot attached to an expressway when a vehicle equipped with a vehicle-mounted device is traveling on the expressway. It is.

  According to the first aspect of the present invention, there is provided display means, communication means for transmitting / receiving data to / from the center apparatus, current position detecting means for acquiring current position information, map information including road information and facility information along the road. When it is determined that the vehicle is traveling on a highway based on storage means for storing, current position information acquired by the current position detection means, and map information stored in the storage means, When the communication means receives the search result information including the dynamic information indicating the congestion status of the parking lot, the dynamic information of the parking lot of the facility incidental to the expressway is extracted from the search result information, The vehicle-mounted device includes control means for displaying the extracted dynamic information on the display means.

  According to a second aspect of the present invention, in the in-vehicle device according to the first aspect, the control means is based on current position information acquired by the current position detection means and map information stored in the storage means. When it is determined that the vehicle is traveling on an expressway, search information including information on the facility existing ahead in the traveling direction of the expressway is transmitted to the center device by the communication means.

  The invention described in claim 3 is the vehicle-mounted device according to claim 2, characterized in that the facility information is position information of a parking lot provided in the facility.

  The invention according to claim 4 is the vehicle-mounted device according to claim 2 or 3, characterized in that the facility information is identification information for individually identifying a parking lot provided in the facility. .

  The present invention described in claim 5 is a current location detection step for acquiring current location information, current location information acquired by the current location detection step, road information stored in storage means, and facility information along the road. A determination step for determining whether or not the vehicle is traveling on a highway based on map information including the information, and when the determination step determines that the vehicle is traveling on the highway, A transmitting step for transmitting search information including information on the existing facility to a center device by communication means, and search result information including dynamic information indicating congestion status of a plurality of parking lots by the center device. Receiving step, extracting step of extracting the dynamic information of the parking lot of the facility incidental to the expressway from the search result information received by the receiving step, and the extracting step Ri is characterized in that the display step of displaying on the display unit dynamic information the extracted, a display method comprising.

  According to the sixth aspect of the present invention, the computer stores communication information for transmitting / receiving data to / from the center device, current position detection means for acquiring current position information, and memory for storing map information including road information and facility information along the road. Means, when it is determined that the vehicle is traveling on a highway based on the current position information acquired by the current location detection means and the map information stored in the storage means, When the communication means receives the search result information including the dynamic information indicating the congestion state, the dynamic information of the parking lot of the facility attached to the expressway is extracted from the search result information, and the extracted dynamic It is a program for functioning as control means for displaying information on display means.

  According to the present invention, when a vehicle equipped with a vehicle-mounted device is traveling on an expressway, it is possible to provide dynamic information only for a parking lot attached to the expressway.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the configuration will be described.
FIG. 1 shows a configuration diagram of a distribution system 100 in the present embodiment.
As shown in FIG. 1, the distribution system 100 includes an in-vehicle device 10 mounted on a vehicle C, roadside wireless devices 20A and 20B, a wireless communication access point 20C, and a center device 30. The distribution system 100 distributes various information from the center device 30 to the vehicle-mounted device 10.

  As shown in FIG. 1, the center apparatus 30 is connected to roadside apparatuses 20 </ b> A and 20 </ b> B installed on a road, a parking lot, a roadside station, and the like via a DSRC dedicated network N <b> 1. Each of the roadside apparatuses 20A and 20B is configured to be able to wirelessly communicate with the vehicle-mounted device 10 having the DSRC communication function. When communication with the vehicle-mounted device 10 is established, the roadside device 20A and 20B notifies the center device 30 to that effect. Information is received and transmitted to the vehicle-mounted device 10. The roadside apparatus 20A performs communication (referred to as DSRC non-IP communication) with the vehicle-mounted device 10 and the center apparatus 30 using a unique protocol dedicated to DSRC. The roadside apparatus 20B communicates with the vehicle-mounted device 10 and the center apparatus 30 (referred to as DSRCIP communication) using the Internet protocol (IP).

  The center device 30 is connected to the external networks N2 and N3, and can perform mutual communication by IP (Internet Protocol) communication with the vehicle-mounted device 10 via the wireless communication access point 20C. The center apparatus 30 will transmit the requested | required information to the onboard equipment 10, if the acquisition request of the various information from the onboard equipment 10 is received via external network N2, N3.

  IP communication methods include PDC (Personal Digital Cellular), CDMA (Code Division Multiple Access), PHS (Personal Handyphone System) using wireless communication devices such as mobile phones, IEEE802.11a / b / g / h, etc. Any method such as a wireless local area network (LAN) of IEEE, WiMAX (Worldwide Interoperability for Microwave Access) of IEEE 802.16a / e / h may be used. The wireless communication access point 20C is a mobile phone base station that can be connected to the networks N2 and N3 according to the applied communication method, a host server, a wireless LAN router equipped with an antenna, etc., and the networks N2 and N3 are dedicated networks and the Internet. It is.

  As an example in the case of performing IP communication, a roadside wireless device 20B capable of supporting not only dedicated communication by DSRC communication but also general IP communication is provided, and the center device 30 and the vehicle-mounted device are provided via this roadside wireless device 20B. There is a method of performing IP communication with 10. Further, as shown in FIG. 1, the vehicle-mounted device 10 is connected to a wireless communication access point 20C provided in various places, and performs IP communication with the center apparatus 30 from the wireless communication access point 20C via the networks N2 and N3. There is also a method.

Hereinafter, each component device will be described.
FIG. 2 is a diagram for explaining a roadside wireless device and a roadside area.
The roadside radio apparatuses 20A and 20B are composed of a main body apparatus 21 and an antenna 22 as shown in FIG. The roadside apparatuses 20A and 20B radiate DSRC radio waves with a limited reach distance from an antenna 22 installed on the side of the road or above the road to form a mutual communication area Z in the vicinity of the roadside apparatuses 20A and 20B. . Bidirectional narrowband wireless communication is possible only with the vehicle-mounted device 10 of the vehicle C in the mutual communication area Z.

  DSRC is a communication method using radio waves in the 5.8 GHz band, and its communication range is, for example, several meters to several tens of meters. Since the DSRC transmission outputs from the roadside apparatus 20A and 20B are all set to the same level, the mutual communication area Z formed by each of the roadside apparatuses 20A and 20B is almost constant regardless of the installation location. is there.

  The main body device 21 performs a process for mediating exchange of information between the vehicle-mounted device 10 and the center device 30. That is, the information received from the vehicle-mounted device 10 via the antenna 22 is transferred to the center device 30, and the various information transmitted from the center device 30 is transferred to the vehicle-mounted device 10. As the main body device 21, a computer including a control unit that performs information processing and communication control, a storage unit, and the like can be applied. Note that the roadside apparatus 20B can perform not only dedicated communication by DSRC communication as described above but also general IP communication through DSRC communication.

  The vehicle-mounted device 10 is mounted on the vehicle C, and has a function of performing a process for using an ETC (Electric Toll Collection System) by DSRC in addition to a navigation function of performing a process for guiding to a guide route. Yes.

In FIG. 3, the structure of the onboard equipment 10 in this embodiment is shown.
As shown in FIG. 3, the vehicle-mounted device 10 includes a car navigation (hereinafter abbreviated as “car navigation”) unit 1, a VICS (Vehicle Information and Communication System) module 2, a DSRC unit 3, a control unit 4, and an IP communication unit 5. It is configured.

  The car navigation unit 1 includes a car navigation control unit 1a, a current location detection unit 1b, a map storage unit 1c, an input unit 1d, a display unit 1e, a storage unit 1f, a voice output unit 1g, and the like, and a route from the current location of the vehicle C to the destination And the navigation processing such as guiding the vehicle C to the destination according to the route is performed.

  The car navigation control unit 1a is based on the current location (current location information) detected from the current location detection unit 1b and the map DB (database) stored in the map storage unit 1c and the like from the current location of the vehicle C via the input unit 1d. Calculate the route to the set destination. And the map screen for guide | inducing to the path | route calculated using map DB memorize | stored in the map memory | storage part 1c is produced | generated, and it displays on the display part 1e.

  The current location detection unit 1b uses detection results of various sensors such as a GPS antenna, an angle sensor, a direction sensor, and a distance sensor, and detection signals of various sensors such as a speed sensor, a travel distance sensor, and a brake sensor provided in the vehicle. Based on this, it functions as current location detection means for acquiring current location information (latitude, longitude, etc.) of the vehicle C, and outputs the current location information to the car navigation control unit 1a. The GPS antenna receives GPS signals transmitted from GPS satellites. The angle sensor detects the acceleration of the vehicle C indicating the amount of change in the moving direction. The direction sensor detects the absolute direction of the vehicle C by detecting geomagnetism.

  The map storage unit 1c is composed of a recording medium such as a memory or a DVD, and receives map information necessary for car navigation, a parking lot DB, guide information (traffic regulation information, traffic jam information, etc.) received via the VICS module 2, etc. Is remembered. The map DB includes a map screen for display, information for route search, information on points such as facilities and parks, and the like. The point information includes, for example, a point name, latitude / longitude, address, telephone number, and the like. If this point is a facility such as a service area (SA) or parking area (PA) attached to the expressway, it is attached in addition to the name, latitude / longitude, address, etc. of the facility such as SA or PA. The information on the facilities (toilet, gas station, restaurant, etc.) is the location information. That is, the map storage unit 1c functions as a storage unit that stores a map DB as map information including road information and facility information (location information).

The parking lot DB includes parking lot static information regarding each parking lot registered in advance.
FIG. 4 shows an example of parking lot static information.
As shown in FIG. 4, the parking lot static information includes parking lot ID, parking lot center coordinates, entrance information, parking lot name, parking lot capacity, parking lot type, vehicle restrictions, business hours, parking lot information. Includes affiliated stores, equipment status, parking fee payment methods, extended data, etc.

The parking lot ID is an ID unique to each parking lot. The parking center coordinates indicate position information (latitude and longitude) that is a representative position of the parking lot. In addition, when the parking lot is provided in SA or PA, the position of SA or PA becomes a parking lot center coordinate.
This parking lot ID and parking lot parking center coordinates are identification information for individually identifying parking lots.

  The entrance information includes the coordinates of each entrance provided in the parking lot, and in this embodiment, has information on a maximum of 15 entrances. A vehicle restriction | limiting shows restrictions, such as the vehicle width of the vehicle which can be parked in a parking lot, a vehicle height, a weight, a vehicle type. The business hours include a warehousing time that can be entered into the parking lot, a detachable time that can be taken out from the parking lot, a staying permission flag, and the like. The facility status indicates the presence or number of disabled spaces, barrier-free, women-only spaces, toilets, motorcycles, etc. provided in the parking lot.

  The input unit 1d includes a touch panel configured integrally with the operation keys and the monitor of the display unit 1e. The input unit 1d generates operation signals corresponding to these operations and outputs them to the car navigation control unit 1a.

  The display unit 1e includes a monitor, and displays various types of information on the monitor according to display control of the control unit 4 and the car navigation control unit 1a. For example, a setting screen, a map screen, a content information screen received from the center device 30, and the like are displayed.

The storage unit 1f includes a memory, and stores a control program executed by the control unit 4 and the car navigation control unit 1a, parameters and data necessary for executing the program, and the like.
The storage unit 1 f stores various information received from the center device 30.

  The audio output unit 1g includes an audio processing unit, a D / A converter, an amplifier, a speaker, and the like. The audio output unit 1g converts audio data instructed from the control unit 4 or the car navigation control unit 1a into an analog signal by a D / A converter and outputs the audio through a speaker. The voice output unit 1g generates a synthesized voice signal by the voice processing unit based on the phonogram character string data instructed from the control unit 4 or the car navigation control unit 1a, and outputs the voice through the speaker.

  The VICS module 2 includes antennas for optical communication, FM communication, and 2.4 GHz radio wave communication, and performs optical communication, FM communication, and radio wave communication with the VICS center. The VICS module 2 receives traffic jam information and traffic regulation information from the VICS center and outputs them to the control unit 4.

  The DSRC unit 3 includes a DSRC control unit 3a, a DSRC communication unit 3b, a storage unit 3c, an ETC processing unit 3d, and an IC card I / F unit 3e. It performs communication processing for receiving various information from the device 30 and functions as a communication means for performing data transmission / reception with the center device.

The DSRC control unit 3a includes a CPU, a RAM, and the like, and controls the operation of each unit of the DSRC unit 3 in cooperation with a control program stored in the storage unit 3c.
For example, when performing payment by ETC, the communication operation of the DSRC communication unit 3b is controlled to transmit / receive payment information to / from the ETC base station (a radio base station provided near the ETC gate for performing ETC payment). Make it. In addition, the ETC processing unit 3d causes payment information to be written.

  When the DSRC control unit 3a receives various types of information from the center device 30, the DSRC communication unit 3b sends the information stored in the uplink information storage area 3c1 of the storage unit 3c according to the instruction of the control unit 4 On the other hand, when the DSRC communication unit 3b receives various information via the roadside radio devices 20A and 20B, the roadside radio devices 20A and 20B transmit the information to the control unit 4.

  The DSRC communication unit 3b includes an antenna fixed in the vicinity of the windshield on the dashboard of the vehicle C, and transmits / receives DSRC radio waves to / from the roadside apparatus 20A, 20B, the ETC base station, and the like via the antenna. .

  The storage unit 3c stores a control program executed by the DSRC control unit 3a. In addition, an uplink information storage area 3c1 is provided in the storage unit 3c. The uplink information storage area 3c1 is a storage area provided exclusively for providing information to the center device 30, and stores the characteristic information of the vehicle-mounted device 10 in addition to the uplink information.

  The characteristic information refers to information related to device characteristics of the vehicle-mounted device 10. In the characteristic information, an ID (hereinafter referred to as “vehicle equipment ID”) allocated to each vehicle-mounted device 10, a language that the vehicle-mounted device 10 can support, a map geodetic system, a copyright management technology, a monitor resolution of the display unit 1 e, Information such as the compatibility of SVG (Scalable Vector Graphics) and the storage capacity capable of storing various information is included.

Uplink information is information used to select various types of information distributed in the center device 30. The uplink information transmission method in the present embodiment includes a method in which the vehicle-mounted device 10 transmits to the center device 30 via the road-side radio device 20A, and a vehicle-mounted device 10 via the external networks N2, N3, or a road-side radio device. There is a method of transmitting to the center apparatus 30 via 20B.
Note that the uplink information is generated for each service provider by the control unit 4 with the content corresponding to the service provider, and is constantly updated by the control unit 4 so as to be the latest content.

FIG. 5 shows an example of uplink information in the present embodiment.
As shown in FIG. 5, the uplink information includes member information, search position information, mesh code information, information update request, latest information form flag, search condition items, and the like.

  The member information is member information in a service provider with which the user has contracted for distribution of various types of information. The search position information includes latitude / longitude indicating position information (search place) of a place to be searched. The mesh code information includes a tertiary mesh code including a search location, a tertiary mesh code version, and the like.

  The information update request is information indicating whether or not the latest parking lot static information in mesh units is requested. The latest information form flag is the update unit of the parking lot static information of the parking lot to be updated, or batch update to replace all the parking lot static information in mesh units, or the change of the parking lot static information based on the version information This is information indicating whether to perform differential update.

  The search condition item indicates the condition of the parking lot to be searched. This search condition item includes various items such as a search condition presence / absence flag, an ID designation search for designating the parking lot ID of the parking lot to be searched, start time / end time, parked vehicle information, and other search conditions.

  The ETC processing unit 3d reads / writes settlement information and the like from / to a credit card with IC or an ETC card inserted into and removed from the IC card I / F unit 3e.

  The IC card I / F unit 3e includes a slot for the credit card or the like, and mediates the exchange of information between the IC such as a credit card inserted into the slot and the ETC processing unit 3d.

  The control unit 4 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and the like. The control unit 4 performs various calculations in cooperation with a control program stored in the storage unit 1f and performs centralized control of each unit. For example, the DSRC communication operation of the DSRC unit 3 and the IP communication operation of the IP communication unit 5 are controlled. The DSRC unit 3 is controlled in cooperation with the DSRC control unit 3a of the DSRC unit 3. In addition, various information received from the center apparatus 30 and traffic information received via the VICS module 2 are stored and reproduced.

  Further, in the case of the highway mode, the control unit 4 executes a highway mode display process for causing the display unit 1e to display a highway mode screen indicating dynamic information of a parking lot of a facility incidental to the highway ahead in the traveling direction. The highway mode is a route guidance mode performed by the car navigation unit 1 when a vehicle on which the vehicle-mounted device 10 is mounted is traveling on a highway (such as a highway or a motorway).

  In this highway mode display process, a vehicle equipped with the vehicle-mounted device 10 is traveling on a highway based on the current position information acquired by the current location detection unit 1b and the map DB stored in the map storage unit 1c. It is determined whether or not there is a highway mode. When the vehicle is traveling on a highway, uplink information as search information including information on a facility existing ahead in the traveling direction of the highway is transmitted to the center device by the DSRC unit 3 or the IP communication unit 5. When the parking lot dynamic information as the search result information including the dynamic information indicating the congestion situation of the plurality of parking lots is received by the DSRC unit 3 or the IP communication unit 5 by the center device, the received parking lot movement is received. The dynamic information of the parking lot of the facility incidental to the expressway existing ahead in the traveling direction is extracted from the target information, and a highway screen showing the extracted dynamic information is displayed on the display unit 1e.

  The IP communication unit 5 is configured to be connectable to a wireless communication device 40 such as a mobile phone, a PHS, and a LAN card, and performs IP communication with the center apparatus 30 via the wireless communication device 40 and the wireless communication access point 20C.

FIG. 6 shows a functional configuration of the center device 30.
The center device 30 includes a control unit 31, an input unit 32, a display unit 33, a storage unit 34, a communication unit 35, and the like. The center device 30 receives the parking lot information such as the parking lot dynamic information stored in the storage unit 34 according to the characteristic information and the uplink information received from the vehicle-mounted device 10 via the roadside radio device. Read out, and distribute to the vehicle-mounted device 10.

The control unit 31 includes a CPU, a RAM, and the like, performs various calculations in cooperation with a control program stored in the storage unit 34, and centrally controls each unit.
For example, the control unit 31 searches for a parking lot based on the uplink information received by the communication unit 35, reads the searched dynamic information of the parking lot from the storage unit 34, and distributes the parking lot to the vehicle-mounted device 10 Process.

  The parking lot search process searches for up to 15 nearest parking lots within a preset range of parking lots centered on the search position information (latitude, longitude) included in the uplink information, and search condition items. Search for parking lots with the same parking lot ID as the parking lot IDs of up to seven parking lots included in the ID designation search, and search results for parking lot dynamic information including the dynamic information of the searched parking lots This information is distributed to the vehicle-mounted device 10 as information.

  The input unit 32 includes a keyboard or the like, receives an operation input, and outputs an operation signal corresponding to the operation input to the control unit 31.

  The display unit 33 includes a display, and displays various screens on the display according to display control of the control unit 31.

  The storage unit 34 stores various data necessary for executing the program in addition to the program executed by the control unit 31. Since the user performs membership registration when making a contract to subscribe to the parking lot information distribution service, the storage unit 34 stores specific information such as the name and address of the user registered as a member and is also owned by the user. Information such as the vehicle-mounted device ID of the vehicle-mounted device 10 to be stored is stored in a database for each user.

Moreover, the memory | storage part 34 has memorize | stored the parking lot information which should be delivered.
The parking lot information is composed of parking lot static information, parking lot dynamic information, and the like.
The parking lot static information is parking lot static information of a parking lot managed by the center device 30. This parking lot static information is managed in units of tertiary meshes. Each tertiary mesh information includes a tertiary mesh code, version information of the tertiary mesh, the number of parking lots included in the tertiary mesh, The parking lot static information of each parking lot is included. This parking lot static information has the same format as the static information of each parking lot in the parking lot DB shown in FIG.

FIG. 7 shows an example of the format of parking lot dynamic information.
The parking lot dynamic information shown in FIG. 7 is the dynamic information of each parking lot from the search position information (latitude and longitude) of the uplink information to the nearest 15 locations, or the parking lot ID included in the ID designation search. It is the dynamic information of each parking lot of the maximum seven places corresponding to.
The parking lot dynamic information includes the latest parking lot information presence / absence flag, the parking lot full / empty information count, other information presence / absence flags, the dynamic information of each parking lot, other information, and extended data. .

  As dynamic information (parking lot 1 to parking lot 15) of each parking lot, parking lot ID, opening information, setting information, total number of vacancy information by entrance, vacancy information by entrance (entrance 1 vacancy information to entrance) 15 full information), information update time, and the like.

  The setting information includes business hours, initial fee, additional fee, text information, and the like. The business hours include a warehousing time and a leaving time. The text information includes the name of the parking lot and the name of the facility where the parking lot is provided.

The full availability information for each entrance includes the congestion status (the state of full, congested, empty, etc. (full availability information)) and the number of available spaces according to the number of parked vehicles in the parking area for each entrance.
Full parking is the situation where the number of parked cars has reached the maximum number of cars that can be parked, congestion is the situation where the number of parked cars is less than the number of cars that can be parked and is greater than or equal to the preset number, and empty cars are the number of parked cars This classification is based on the ratio of the number of cars parked in the parking lot and the number of cars parked in the parking lot.

  The communication unit 35 includes a first communication unit and a second communication unit. The first communication unit performs communication control for the center apparatus 30 to perform data transmission / reception with the roadside apparatuses 20A and 20B connected to the network N1. The second communication unit performs communication control for the center device 30 to perform data transmission and reception with external devices such as the vehicle-mounted device 10 connected to the external networks N2 and N3.

Next, the operation will be described.
FIG. 8 shows a flowchart of the highway mode display process.
The processing shown in FIG. 8 is executed by the control unit 4 in cooperation with each unit such as the car navigation unit 1.

  The control unit 4 acquires the current position information from the current location detection unit 1b (step S1). Based on the acquired current position information and map DB, the control unit 4 determines whether or not the vehicle on which the vehicle-mounted device 10 is mounted is traveling on an expressway (step S2).

  When the vehicle is not traveling on the highway (step S2; NO), the control unit 4 ends the highway mode display process. When traveling on a highway (step S2; YES), the control unit 4 is provided in a facility (for example, SA, PA, etc.) attached to the highway ahead of the vehicle in which the vehicle-mounted device 10 is mounted. It is discriminate | determined whether the parking lot ID of the given parking lot exists in parking lot DB (step S3).

  When there is a parking lot ID of the facility (step S3; YES), the control unit 4 acquires the parking lot ID of the facility ahead in the traveling direction (step S4). Step S3: The case of YES is, for example, a case where there is parking lot static information of a parking lot provided in a facility such as SA or PS in the parking lot DB.

  The control unit 4 sets the acquired parking lot ID in the ID designation search for uplink information (step S5), and causes the DSRC unit 3 or the IP communication unit 5 to transmit the uplink information to the center device 30 (step S6).

  When the control unit 4 receives the parking lot dynamic information from the center device 30 by the DSRC unit 3 or the IP communication unit 5 (step S7), the storage unit stores the dynamic information of each parking lot included in the parking lot dynamic information. Save to 1f (step S8).

  When there is no parking lot ID of the facility (step S3; NO), the control unit 4 designates a predetermined range centering on the latitude and longitude of the facility ahead of the traveling direction (step S9). The control unit 4 sets the designated range as the search position information of the uplink information (Step S10), and causes the DSRC unit 3 or the IP communication unit 5 to transmit the uplink information to the center device 30 (Step S11).

  When the controller 4 receives the parking lot dynamic information from the center device 30 by the DSRC unit 3 or the IP communication unit 5 (step S12), the name of the facility ahead in the traveling direction is set as setting information from the received parking lot dynamic information. The included dynamic information of the parking lot is extracted, and the extracted dynamic information of the parking lot is stored in the storage unit 1f (step S13).

  The timing for acquiring the dynamic information of the extracted parking lot is not limited here, but the dynamic information is acquired when the dynamic information is acquired at regular time intervals while driving on the expressway or when the expressway starts running. Various timings such as acquisition are possible.

  After step S8 or step S13, the control unit 4 causes the display unit 1e to display a highway mode screen on the basis of the parking lot dynamic information stored in the storage unit 1f and the facility information included in the map DB. (Step S14), the highway mode display process is terminated.

FIG. 9 shows an example of the highway mode screen.
As shown in FIG. 9, the highway mode screen G1 is a screen displayed together with the guidance route screen G0. The highway mode screen G1 shown in FIG. 9 is displayed on the upper surface of the guidance route screen G0, but is not limited thereto, and may be displayed in two on the display screen of the display unit 1e side by side with the guidance route screen G0. .

On the guidance route screen G0, a map showing the current traveling position and the traveling direction is displayed.
The highway mode screen G1 is provided with facility guidance display areas E1 to E3 in which information on facilities on the guidance route of the expressway is displayed while the vehicle equipped with the vehicle-mounted device 10 is traveling on the expressway. .

  In the facility guidance display areas E1 to E3, the name of the facility, the equipment provided in the facility, the full display M1, M2, the distance to each facility, the predicted passage time, and the like are displayed. The full display M1 and M2 indicate the congestion status of the parking lot based on the dynamic information of the parking lot provided in each facility. The full display M1 and M2 are displayed in different modes depending on the congestion situation.

  As described above, according to the present embodiment, in the case of the highway mode when the vehicle equipped with the vehicle-mounted device is traveling on the highway, only the dynamic information of the parking lot provided in the facility along the highway. Therefore, it is possible to prevent the provision of dynamic information for parking lots along general roads and to provide dynamic information only for parking lots of facilities attached to highways (SA, PA, etc.) can do.

  Of course, the present invention is not limited to the above-described embodiment, but can be modified as appropriate.

It is a block diagram of a delivery system. It is a figure for explaining a roadside radio apparatus and a roadside area. It is a figure which shows the structure of onboard equipment. It is a figure which shows the example of parking lot static information. It is a figure which shows the example of uplink information. It is a figure which shows the functional structure of a center apparatus. It is a figure which shows an example of the format of parking lot dynamic information. It is a flowchart of a highway mode display process. It is a figure which shows the example of a highway mode screen.

Explanation of symbols

1 Car navigation unit 1a Car navigation control unit 1b Current location detection unit 1c Map storage unit 1d Input unit 1e Display unit 1f Storage unit 1g Audio output unit 2 VICS module 3 DSRC unit 3a DSRC control unit 3b DSRC communication unit 3c Storage unit 3c1 Uplink information storage Area 3d ETC processing unit 3e IC card I / F unit 4 Control unit 5 IP communication unit 40 Wireless communication device 10 On-board unit 20A, 20B Roadside wireless device 20C Wireless communication access point 21 Main unit 22 Antenna 30 Center device 31 Control unit 32 Input Unit 33 Display unit 34 Storage unit 35 Communication unit 100 Distribution system C Vehicles E1 to E3 Facility guidance display area G0 Guidance route screen G1 Highway mode screen M1, M2 Full display N1, N2, N3 Network

Claims (6)

Display means;
A communication means for transmitting and receiving data to and from the center device;
Current location detection means for acquiring current location information;
Storage means for storing map information including road information and facility information along the road;
When it is determined that the vehicle is traveling on a highway based on the current position information acquired by the current location detection unit and the map information stored in the storage unit, the center device may congest the plurality of parking lots. When the communication means receives the search result information including the dynamic information indicating, the dynamic information of the parking lot of the facility incidental to the expressway is extracted from the search result information, and the extracted dynamic information is Control means for displaying on the display means;
Providing
In-vehicle device characterized by. The control means includes
When it is determined that the vehicle is traveling on a highway based on the current position information acquired by the current location detection unit and the map information stored in the storage unit, the vehicle is present in the forward direction of the highway. Search information including facility information is transmitted to the center device by the communication means;
The in-vehicle device according to claim 1. The facility information is:
The location information of the parking lot provided in the facility;
The vehicle-mounted device according to claim 2, wherein: The facility information is:
It is identification information for individually identifying the parking lot provided in the facility,
The vehicle-mounted device according to claim 2 or 3, wherein A current location detection process for acquiring current location information;
It is determined whether or not the vehicle is traveling on a highway based on the current position information acquired by the current location detection step, road information stored in the storage means, and map information including information on facilities along the road. A discrimination process;
When it is determined that the determination step is traveling on the expressway, a transmission step of transmitting search information including information on the facility existing ahead in the traveling direction of the expressway to the center device by communication means;
A receiving step of receiving, by the communication means, search result information including dynamic information indicating a congestion situation of a plurality of parking lots by the center device;
An extraction step of extracting dynamic information of a parking lot of a facility incidental to the expressway from the search result information received by the reception step;
A display step of displaying on the display means the dynamic information extracted by the extraction step;
Including,
A display method characterized by. Computer
A communication means for transmitting and receiving data to and from the center device,
Current location detection means for acquiring current location information;
Storage means for storing map information including road information and facility information along the road;
When it is determined that the vehicle is traveling on a highway based on the current position information acquired by the current location detection unit and the map information stored in the storage unit, the center device may congest the plurality of parking lots. When the communication means receives the search result information including the dynamic information indicating, the dynamic information of the parking lot of the facility incidental to the expressway is extracted from the search result information, and the extracted dynamic information is Control means for displaying on the display means;
Program to function as.

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