JP4962484B2 - OBE - Google Patents

Description

  The present invention relates to a vehicle-mounted device.

  Conventionally, in-vehicle devices incorporating a navigation device use DSRC (Dedicated Short Range Communication) to perform wireless communication with a roadside wireless device installed on the road or in a parking lot, and the like via the roadside wireless device. Thus, it is possible to receive information on facilities (for example, stores, medical institutions, etc.) around the vehicle from the center device.

  Such an in-vehicle device stores information received from the roadside wireless device in a memory, and therefore can reproduce information even in an environment where communication with the roadside wireless device is not possible. In addition, it is possible to connect to the Internet using a communication means that can be connected to a wide area communication network such as a cellular phone, receive traffic information, exchange e-mails, and refer to various Web pages with a Web browser. There is also an in-vehicle device.

For example, it provides static information composed of static information such as parking lot identification information and position information, and dynamic information composed of dynamic information such as fullness information that constantly changes state to the vehicle-mounted device. There is an information distribution system (see Patent Document 1).
JP 2006-17464 A

  When the static information is provided, the OBE updates all the static information stored in the OBE to the newly provided static information, or updates the static information for only a specific area. Can be. When updating only a specific area, there are two methods of batch update and differential update. The batch update method replaces all static information in a specific area with new static information and updates the information. The differential update method is to update by adding or deleting static information for each specific area based on the version information of the static information.

  The provision of static information may be performed by an information provider that manages all parking lots and provides information, or may be performed by a parking lot operator that manages a specific parking lot and provides information. When the parking lot operator performs a batch update of static information, all static information stored in the vehicle-mounted device becomes the parking lot static information provided by the parking lot operator, and the parking lot operator The static information of the parking lots that are not managed by will be deleted. For this reason, it becomes impossible to provide information on parking lots that are not managed by the parking lot operator, and the convenience of the navigation function is impaired.

  In view of the above problems, an object of the present invention is to prevent deletion of static information other than a parking lot managed by a company that performs batch updating when batch updating of static information of a parking lot is performed, and a navigation function Is to ensure convenience.

  The invention according to claim 1 is the parking lot information including the regional division information for identifying the regional division where the parking lot exists and the parking lot identification information for identifying the parking lot, and the revision information for each of the regional divisions, Storage means for storing the data, transmission / reception of data to / from the center device, and the area division information and revision information of the area division, and the parking lot information to be changed included in the area area, in units of the area division. Communication means for receiving the change information including, and when the change information received by the communication means is update information for updating the parking lot information stored in the storage means, It is determined whether or not the parking lot information stored in the storage means needs to be changed based on the revision information of the local division and the revision information of the regional division of the change information, and it is determined that the parking lot information needs to be changed. The parking lot identification information of the parking lot information included in the update information is only the parking lot information whose parking lot identification information is the same as the parking lot identification information of the parking lot information stored in the storage means. It is a vehicle-mounted device provided with the control means which memorize | stores parking lot information in the said memory | storage means, It is characterized by the above-mentioned.

  According to a second aspect of the present invention, in the vehicle-mounted device according to the first aspect, the control means stores the memory when the revision information of the regional section of the change information is newer than the revision information of the regional section of the storage means. It is characterized that it is determined that the parking lot information stored in the means needs to be changed.

  According to a third aspect of the present invention, in the vehicle-mounted device according to the first or second aspect, the control unit stores the parking lot identification information of the parking lot information included in the update information in the storage unit. When the parking lot identification information is not stored in the parking lot information, the storage unit stores the parking lot information included in the update information.

  The invention according to claim 4 is the vehicle-mounted device according to any one of claims 1 to 3, wherein the storage means stores history information of the parking lot information stored in the storage means, When the storage means has parking lot information including the same parking lot identification information as the parking lot identification information of the parking lot information included in the update information, the control means stores the storage information based on the history information. The parking lot information stored in the means is updated to the parking lot information included in the update information.

  The invention according to claim 5 is the vehicle-mounted device according to any one of claims 1 to 4, wherein the storage means stores history information of the parking lot information stored in the storage means, The control means, when the change information received by the communication means is deletion information for deleting the parking lot information stored in the storage means, the revision information of the regional section of the storage means for each regional section And determining whether or not it is necessary to change the parking lot information stored in the storage means based on the revision information of the area block of the change information, and determining that the parking lot information needs to be changed, the deletion information If the storage means has parking lot information including the same parking lot identification information as the parking lot identification information included in the parking lot information, the parking lot stored in the storage means based on the history information Delete information, It is characterized by a door.

  According to the present invention, when static information of a parking lot is collectively updated, it is possible to prevent deletion of static information other than the parking lot managed by the operator who performs the batch update, and to ensure the convenience of the navigation function. be able to.

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. The center device 30 in the present embodiment is provided for each business operator that manages a predetermined parking lot or an information provider that manages all parking lots.
In addition, the number of the onboard equipment 10, roadside radio | wireless apparatus 20A, 20B, the radio | wireless communication access point 20C, and the center apparatus 30 is not limited to the number shown by FIG.

  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 set from the current location of the vehicle C via the input unit 1d based on the current location information detected from the current location detection unit 1b and the map DB (database) stored in the map storage unit 1c. Calculate the route to the 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 includes various sensors such as a GPS antenna, an angle sensor, a direction sensor, and a distance sensor, and detects the current location of the vehicle C based on the detection results of these sensors. The GPS antenna receives GPS signals transmitted from GPS satellites. Further, the angle sensor detects the acceleration of the vehicle C indicating the amount of change in the moving direction, and the direction sensor detects the geomagnetism to detect the absolute direction of the vehicle C. The current location detection unit 1b generates position information (information such as longitude and latitude) indicating the current location of the vehicle C based on each detection result acquired from these sensors, and outputs the position information to the car navigation control unit 1a.

  The map storage unit 1c is composed of a recording medium such as a memory or a DVD, and receives guide information (road information, traffic jam information, etc.) received via the map DB, parking lot DB, and VICS module 2 necessary for guidance display. I remember it. 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.

The parking lot DB includes parking lot static information, version DB, history DB, and the like relating to each parking lot registered in advance, and functions as a storage unit.
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 parking lot identification information for identifying a parking lot unique to each parking lot.
The parking center coordinates include a tertiary mesh code of the parking lot and a representative position (latitude, longitude) of the parking lot. The tertiary mesh code is regional section information for identifying a preset regional section where a parking lot exists.

  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.

  When the parking lot static information is updated, there are a method for updating all the parking lot static information stored in the map storage unit 1c at once and a method for updating only a specific section (mesh unit). . When only a specific section is updated, the parking lot static information is updated in units of tertiary mesh. Here, the mesh unit will be described in detail with reference to FIG.

FIG. 5 is a diagram illustrating mesh units.
Here, the mesh is a regional division obtained by dividing a map of Japan into a predetermined size by meridians and parallels. The mesh used in the present embodiment is a standard area mesh established in 1973 by Administrative Administration Agency Notification No. 143.

As shown in FIG. 5, the primary mesh is an area divided by a longitude difference of 1 degree and a latitude difference of 40 minutes. The secondary mesh is an area (about 10 km square) obtained by dividing one section of the primary mesh by 8 × 8 = 64. The tertiary mesh is an area (about 1 km square) obtained by dividing one section of the secondary mesh by 10 × 10 = 100. Thus, the mesh has a plurality of partition levels (units) having different partition sizes.
In the present embodiment, the number of tertiary meshes that can be updated at a time is assumed to be a maximum of 4 meshes.

FIG. 6 shows an example of the version DB.
As shown in FIG. 6, the version DB stores version information for a tertiary mesh code (regional partition information) for identifying each tertiary mesh. This version information is the revision information of each tertiary mesh and the version information (revised information) of the parking lot static information of the parking lot existing in the tertiary mesh indicated by the tertiary mesh code. Therefore, version information of parking lot static information is managed by the version DB. In the present embodiment, the version information is set based on the date and time such as the year, month, and day, but is not limited thereto.
In the version DB, the version information for each tertiary mesh code is rewritten whenever the parking lot static information is changed (updated or deleted).

FIG. 7 shows an example of the history DB.
As illustrated in FIG. 7, the history DB indicates a history regarding changes (updates or deletions) of parking lot static information of each parking lot. The history DB is composed of information such as parking lot ID, version information, change, item 1, item 2, item 3,...

  The version information is version information of a tertiary mesh code included in the parking lot static information for the parking lot ID. When “Chg” is indicated, the change indicates that any item of the parking lot static information has been updated. When “Del” is indicated, the change indicates the parking lot static information. Indicates that has been deleted. Item 1, item 2, item 3,... Indicate the contents of updated items in the parking lot static information. The front shows information before the update of the parking lot static information item, and the rear shows the information after the update of the parking lot static information item.

  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.
In addition, the storage unit 1 f stores the parking lot information and 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, road traffic information, and the like 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. 8 shows an example of uplink information in the present embodiment.
As shown in FIG. 8, 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 a position (search place) where the user wants to find a place such as a parking lot. 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.

Moreover, the control part 4 functions as a control means which performs the batch update process which changes parking lot static information based on the version information of a tertiary mesh code, when performing batch update.
In this batch update process, the DSRC unit 3 changes information including the tertiary mesh mesh code and version information and the parking lot information to be changed (updated or deleted) included in the tertiary mesh in units of tertiary mesh. When (the parking lot static update information or parking lot static deletion information described later) is received, the map is based on the version information of the version DB of the map storage unit 1c and the version information of the change information for each tertiary mesh. The necessity of changing the parking lot static information stored in the storage unit 1c is determined, and the parking lot static information is changed according to the determination result.

  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. 9 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 reads the parking lot static information and the like of each parking lot stored in the storage unit 34 in accordance with the characteristic information and uplink information received from the vehicle-mounted device 10 via the roadside wireless device. 10 to be delivered.

  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.

  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 includes parking lot static update information, parking lot static deletion information, and the like. FIG. 10 shows an example of the format of the parking lot static update information, and FIG. 11 shows the format of the parking lot static deletion information. The parking lot static information and the parking lot deletion information are in units of a tertiary mesh, the tertiary mesh code and version information of the tertiary mesh, and the parking lot static to be changed (updated or deleted) included in the tertiary mesh. Change information including target information.

  The parking lot static update information shown in FIG. 10 is information for updating the parking lot static information stored in the vehicle-mounted device 10. The parking lot static update information includes the number of tertiary meshes, parking lot static information of parking lots that exist in each tertiary mesh and are updated.

The number of tertiary meshes includes the latest information form flag and the number of meshes.
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 number of meshes indicates the number of tertiary meshes included in the parking lot static update information.

  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, and parking lot static information of each parking lot. The parking lot static information of each parking lot has the same format as the parking lot static information of each parking lot in the parking lot DB shown in FIG.

  The parking lot static deletion information shown in FIG. 11 is information for deleting the parking lot static information stored in the vehicle-mounted device 10. The parking lot static deletion information includes the number of tertiary meshes, the parking lot ID of the parking lot that exists in each tertiary mesh and is to be deleted, and the like.

  The number of tertiary meshes includes the number of meshes indicating the number of tertiary meshes included in the parking lot static update information. Each tertiary mesh information includes a tertiary mesh code, version information of the tertiary mesh, a parking lot abolition flag, the number of parking lots to be deleted (the number of target parking lots) included in the tertiary mesh, and a deletion target. The parking lot ID of each parking lot is included.

  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. Therefore, the communication unit 35 functions as a second communication unit that performs data transmission / reception with the vehicle-mounted device 10.

Next, the operation will be described.
A batch update process executed in the vehicle-mounted device 10 will be described.
FIG. 12 shows a flowchart of batch update processing executed when parking static update information is received. The processing shown in FIG. 12 is executed by the control unit 4 in cooperation with the car navigation control unit 1a and each unit in the car navigation unit 1.

  After transmitting uplink information including the latest information form flag indicating batch update to the center apparatus 30, the control unit 4 has received the parking static update information including the latest information form flag indicating batch update from the center apparatus 30. Whether or not (step S1). When parking lot static update information is not received (step S1; NO), the control part 4 complete | finishes a batch update process.

  When the parking static update information is received (step S1; YES), the control unit 4 is information on any one of the tertiary meshes among the tertiary mesh information included in the received parking static update information. Select and browse. And the control part 4 reads the version information of the tertiary mesh code same as the tertiary mesh code of the information of the tertiary mesh to refer from version DB. The control unit 4 compares the version information of the tertiary mesh information referred to in the received parking lot static update information with the version information read from the version DB (step S2). By step S2, the version information of the parking lot static information of the parking lot existing in the tertiary mesh to be referred to the version information of the parking lot static information of the parking lot stored in the vehicle-mounted device 10 is compared. It will be.

  The control unit 4 determines whether or not the version information of the tertiary mesh information to be referred to in the received parking lot static update information is newer than the version information read from the version DB (step S3).

  When the version information of the tertiary mesh information to be referred to in the received parking lot static update information is not newer than the version information read from the version DB (step S3; NO), the control unit 4 performs batch update processing. Exit.

  When the version information of the reference tertiary mesh information in the received parking lot static update information is newer than the version information read from the version DB (step S3; YES), it is included in the reference tertiary mesh information. A reference number is assigned to the parking lot static information to be stored, and a reference number (reference reference number) to be referred to is n. And the control part 4 sets the reference reference number n to 1 (step S4).

  The control part 4 extracts parking lot ID from the parking lot static information to which the reference reference number n was attached | subjected (step S5). And the control part 4 discriminate | determines whether the parking lot static information corresponding to extracted parking lot ID exists in the map memory | storage part 1c (step S6).

  When there is no parking lot static information corresponding to the extracted parking lot ID in the map storage unit 1c (step S6; NO), the control unit 4 stores the parking lot static information of the reference reference number n in the map storage unit 1c. The information is additionally stored (step S7), and the process proceeds to step S12.

  When the parking lot static information corresponding to the extracted parking lot ID is in the map storage unit 1c (step S6; YES), the parking lot static information corresponding to the extracted parking lot ID (stored static information, both It is determined whether or not the parking lot static information with the reference reference number n is the same (step S8). In step S8, when all the information of each item of stored static information and the parking lot static information of the reference reference number n corresponds, it determines with it being the same.

  When the stored static information and the parking lot static information with the reference reference number n are the same (step S8; YES), the control unit 4 proceeds to the process of step S12.

  When the stored static information and the parking lot static information with the reference reference number n are not the same (step S8; NO), the control unit 4 reads the version information of the stored static information with reference to the history DB, It is determined whether or not the version information of the referring tertiary mesh code, that is, the version information of the parking lot static information with the reference reference number n is newer than the version information of the stored static information (step S9). .

  When the version information of the parking lot static information with the reference reference number n is not newer than the version information of the stored static information (step S9; NO), the control unit 4 proceeds to the process of step S12.

  When the version information of the parking lot static information of the reference reference number n is newer than the version information of the stored static information (step S9; YES), the control unit 4 uses the stored static information of the reference reference number n. It updates to parking lot static information (step S10). When the stored static information is updated to the parking lot static information having the reference reference number n in step S10, the control unit 4 adds a history of updated items and the like to the history DB as an update history (step S11).

  The control unit 4 determines whether or not the number of target parking lots included in the referenced tertiary mesh information is greater than the reference reference number n (step S12).

  When the number of target parking lots included in the information of the tertiary mesh being referred to is larger than the reference reference number n (step S12; YES), the control unit 4 adds 1 to the reference reference number n (step S13). The process returns to step S5.

  When the number of target parking lots included in the reference tertiary mesh information is equal to or less than the reference reference number n (step S12; NO), the control unit 4 includes the tertiary mesh included in the received parking static update information. It is determined whether or not there is an unreferenced tertiary mesh in the information (step S14).

  When there is an unreferenced tertiary mesh among the tertiary mesh information included in the received parking lot static update information (step S14; YES), the control unit 4 returns to the process of step S2. When there is no unreferenced tertiary mesh among the tertiary mesh information included in the received parking lot static update information (step S14; NO), the control unit 4 ends the batch update process.

FIG. 13 shows an image diagram of conventional batch update processing, and FIG. 14 shows an image diagram of batch update processing in the present embodiment.
With reference to FIGS. 13 and 14, the description will be given focusing on a certain tertiary mesh.
In the map storage unit 1c of the on-vehicle device, the version information of the focused third mesh is 072011, and as parking lot static information existing in the third mesh, the parking lot managed by the business operator A as the center device is used. It is assumed that the parking lot static information of the parking lots 1 to 3 and the parking lot static information of the parking lots 4 and 5 managed by the operator B as a center device. And in the parking lot static update information transmitted from the business operator A, the version information of the focused third mesh is 080101, and the parking lot static information of the parking lots 3 and 6 is included. And

  As shown in FIG. 13, in the conventional batch update process, the parking lot static information of the parking lot existing in the focused third mesh is changed to the parking lot static information of the parking lot transmitted from the operator A. It will be rewritten, and all the parking lot static information of the parking lot managed by the operator B will be deleted.

  As shown in FIG. 14, in the collective processing of the present embodiment, the parking lot static information of the parking lot existing in the focused third mesh is the parking lot static information of the parking lot managed by the operator B. It is not deleted, the parking lot static information of the parking lot 3 managed by the operator A is updated to the distributed parking lot static information, and the parking lot static information of the parking lot 6 is added. .

  FIG. 15 shows a flowchart of the batch update process executed when the parking lot static deletion information is received. The processing shown in FIG. 15 is executed by the control unit 4 in cooperation with the car navigation control unit 1a and each unit in the car navigation unit 1.

  The control unit 4 determines whether or not parking lot static deletion information has been received from the center device 30 after transmitting uplink information including the latest information form flag indicating batch update to the center device 30 (step S21). . When the parking lot static deletion information is not received (step S21; NO), the control unit 4 ends the batch update process.

  When parking lot static deletion information is received (Step S21; YES), control part 4 is information on any one tertiary mesh among the information on the tertiary mesh contained in received parking lot static deletion information. Select and browse. And the control part 4 reads the version information of the tertiary mesh code same as the tertiary mesh code of the information of the tertiary mesh to refer from version DB. The control unit 4 compares the version information of the tertiary mesh information to be referred to in the received parking lot static deletion information with the version information read from the version DB. By this comparison, the version information of the parking lot static information of the parking lot existing in the tertiary mesh to be referenced is compared with the version information of the parking lot static information of the parking lot stored in the vehicle-mounted device 10. It will be.

  The control unit 4 determines whether the version information of the tertiary mesh information to be referred to in the received parking lot static deletion information is newer than the version information read from the version DB (step S22).

  When the version information of the tertiary mesh information to be referred to in the received parking lot static deletion information is not newer than the version information read from the version DB (step S22; NO), the control unit 4 performs batch update processing. Exit.

  If the version information of the reference tertiary mesh information in the received parking lot static deletion information is newer than the version information read from the version DB (step S22; YES), it is included in the reference tertiary mesh information. A reference number is assigned to the parking lot static information to be stored, and a reference number (reference reference number) to be referred to is n. Then, the control unit 4 sets the reference reference number n to 1 (step S23).

  The control part 4 extracts parking lot ID from the parking lot static information to which the reference reference number n was attached | subjected (step S24). And the control part 4 discriminate | determines whether the parking lot static information corresponding to extracted parking lot ID exists in the map memory | storage part 1c (step S25).

  When there is no parking lot static information corresponding to the extracted parking lot ID in the map storage unit 1c (step S25; NO), the control unit 4 proceeds to the process of step S29.

When the parking lot static information corresponding to the extracted parking lot ID is in the map storage unit 1c (step S25; YES), the control unit 4 stores the parking lot static information (stored already) corresponding to the extracted parking lot ID. It is determined whether or not there is a deletion flag in (static information) (step S26).
The deletion flag is a flag added to the parking lot static information. The parking lot static information to which this deletion flag is added is considered to have been deleted.

  When the stored static information includes a deletion flag (step S26; YES), the control unit 4 proceeds to the process of step S29. When there is no deletion flag in the stored static information (step S26; NO), the control unit 4 adds a deletion flag to the stored static information (step S27).

  When the control unit 4 adds a deletion flag to the stored static information in step S27, the control unit 4 adds a deletion history to the history DB indicating that the parking lot static information to which the deletion flag is added has been deleted (step S27). S28).

  The control unit 4 determines whether or not the number of target parking lots included in the referenced tertiary mesh information is greater than the reference reference number n (step S29).

  When the number of target parking lots included in the information of the referring third mesh is larger than the reference reference number n (step S29; YES), the control unit 4 adds 1 to the reference reference number n (step S30). The process returns to step S24.

  When the number of target parking lots included in the reference tertiary mesh information is equal to or less than the reference reference number n (step S29; NO), the control unit 4 includes the tertiary mesh included in the received parking static deletion information. It is determined whether or not there is an unreferenced tertiary mesh in the information (step S31).

  If there is an unreferenced tertiary mesh among the tertiary mesh information included in the received parking lot static deletion information (step S31; YES), the control unit 4 returns to the process of step S22. When there is no unreferenced tertiary mesh among the tertiary mesh information included in the received parking lot static deletion information (step S31; NO), the control unit 4 ends the batch update process.

  As described above, according to the present embodiment, when the static information of the parking lot is collectively updated, the navigation function prevents the deletion of static information other than the parking lot managed by the operator performing the batch update. Can be ensured.

It is a block diagram of a delivery system. It is a figure for demonstrating a roadside radio | wireless 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 explaining a mesh unit. It is a figure which shows the example of version DB. It is a figure which shows the example of log | history DB. 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 static update information. It is a figure which shows an example of the format of parking lot static deletion information. It is a flowchart of the batch update process performed when parking lot static update information is received. It is an image figure of the conventional batch update process. It is an image figure of the batch update process in this embodiment. It is a flowchart of the batch update process performed when parking lot static deletion information is received.

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 10 On-board unit 20A, 20B Roadside radio 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 40 wireless communication device 100 distribution system C vehicle N1, N2, N3 network

Claims (5)

Storage means for storing area information for identifying an area area where a parking area exists and parking area information including parking area identification information for identifying the parking area, and revision information for each area area;
Communication means for transmitting / receiving data to / from a center device and receiving change information including area division information and revision information of the area division and the parking lot information to be changed included in the area area in units of the area division When,
When the change information received by the communication means is update information for updating the parking lot information stored in the storage means, the revision information of the regional section of the storage means and the change information The parking lot included in the update information when it is determined whether or not the parking lot information stored in the storage means needs to be changed based on the revision information of the local section and the parking lot information needs to be changed. Control for storing only the parking lot information whose parking lot identification information is the same as the parking lot identification information of the parking lot information stored in the storage means in the storage means. Means,
On-vehicle device equipped with. The control means includes
When the revision information of the regional section of the change information is newer than the revision information of the regional section of the storage means, it is determined that the parking lot information stored in the storage means needs to be changed.
The vehicle-mounted device according to claim 1. The control means includes
When the parking lot identification information of the parking lot information included in the update information is parking lot identification information not stored in the parking lot information stored in the storage means, the parking lot included in the update information is included. Storing the parking lot information in the storage means;
The in-vehicle device according to claim 1 or 2. The storage means
Storing history information of the parking lot information stored in the storage means;
The control means includes
When there is parking lot information including the same parking lot identification information as the parking lot identification information of the parking lot information included in the update information, the storage means stores the parking lot information based on the history information. Update the existing parking lot information to the parking lot information included in the update information,
The in-vehicle device according to any one of claims 1 to 3. The storage means
Storing history information of the parking lot information stored in the storage means;
The control means includes
When the change information received by the communication means is deletion information for deleting the parking lot information stored in the storage means, the revision information of the regional section of the storage means and the change information When it is determined whether or not the parking lot information stored in the storage means needs to be changed based on the revision information of the local section, and the parking lot information needs to be changed, the parking lot included in the deletion information When parking information including the same parking identification information as the parking identification information of the information is present in the storage means, the parking information stored in the storage means is deleted based on the history information.
The in-vehicle device according to any one of claims 1 to 4.

Images