WO2008050410A1

WO2008050410A1 - Data distribution device, data processor, data distribution method, data processing method, data distribution program, data processing program, and recording medium

Info

Publication number: WO2008050410A1
Application number: PCT/JP2006/321220
Authority: WO
Inventors: Hiroaki Shibasaki
Original assignee: Pioneer Corporation
Priority date: 2006-10-25
Filing date: 2006-10-25
Publication date: 2008-05-02

Abstract

When a reception section (101) receives new distribution data, a detection section (103) detects the communication speed at which a communication section (108) distributes the distribution data. A judgment section (104) then judges whether or not the communication speed is below a predetermined speed and, if the communication speed is below the predetermined speed, acquires the urgency of distribution of the newly received distribution data and distribution data already stored in a storage section (102). A determination section (107) then determines the order in such a way that the distribution data with a high urgency is distributed first according to the acquired urgency of the distribution. The communication section (108) then distributes the distribution data according to the determined order.

Description

Specification

Data distribution device, data processing device, data distribution method, data processing method, data distribution program, data processing program, and recording medium

Technical field

The present invention relates to a data distribution device, a data processing device, a data distribution method, a data processing method, a data distribution program, a data processing program, and a recording medium that determine the distribution order according to the urgency of distribution of distribution data About. However, the use of the present invention is not limited to the above-described data distribution device, data processing device, data distribution method, data processing method, data distribution program, data processing program, and recording medium.

Background art

[0002] Conventionally, road traffic information communication systems such as VICS (Vehicle Information and Communication System) are widely used. In such a road traffic information communication system, road traffic information is generated by an information distribution server using vehicle running state information detected by a roadside sensor installed on the road side, and the navigation system installed in the vehicle is used. Distribute road traffic information to Yeon equipment. In addition, a technology for delivering detailed road traffic information with higher real-time characteristics based on data transmitted (uplink) of the vehicle power actually traveling on the road has been proposed (for example, the following patents). See reference 1.)

[0003] Patent Document 1: Japanese Patent Laid-Open No. 2005-276209

Disclosure of the invention

Problems to be solved by the invention

[0004] However, in the conventional technology described above, if there is a portion where the data transfer speed is low in the communication path from the information distribution server to the navigation device, the information is transferred to the navigation device within a short time. It may not be possible to communicate. For example, if multiple pieces of information are delivered simultaneously or continuously in a short time, the initially delivered information is transmitted to the navigation device in a relatively short time, but the information delivered later is the data transfer rate. A slow part becomes a bottleneck and it takes a long time to be transmitted to the navigation device. [0005] Here, when the information to be distributed is highly urgent, such as disaster information, it is necessary to promptly transmit the information to the navigation device (user). However, when the information transmission delay as described above occurs, the information cannot be transmitted within a necessary time, and the user cannot use the information.

Means for solving the problem

[0006] In order to solve the above-mentioned problems and achieve the object, the data distribution device according to the invention of claim 1 stores the distribution data distributed to the terminal device in the storage means and distributes the data in the order received. In the data distribution apparatus, the acquisition means for acquiring the newly received distribution data and the urgency level of the distribution data already stored in the storage means, and the emergency of the distribution acquired by the acquisition means Based on the degree, determination means for determining the distribution order so that the distribution data is distributed first, the distribution data is distributed according to the order determined by the determination means And a communication means.

[0007] In addition, a data processing apparatus according to the invention of claim 8 is a data processing apparatus that receives distribution data, stores the distribution data in a storage device, and processes the distribution data in the order of reception. Based on the urgency level of the distribution data received and the distribution data already stored in the storage means, and the urgency level of the distribution acquired by the acquisition means, the distribution with the high urgency level It comprises a determining means for determining the order of data processing so that data is processed first, and a processing means for processing the distribution data according to the order determined by the determining means.

[0008] Further, the data distribution method according to the invention of claim 11 is a data distribution method in a data distribution apparatus that stores distribution data distributed to a terminal device in a storage unit and distributes the data in the order received. ! Based on the newly received distribution data and the urgency level of the distribution data already stored in the storage means, and the urgency level of the distribution acquired by the acquisition step A determination step for determining the distribution order so that the distribution data with high urgency is distributed first, and the determination step And a communication step of distributing the distribution data according to the determined order.

[0009] In addition, a data processing method according to the invention of claim 12 is a data processing method for receiving distribution data and storing it in a storage means, and processing the distribution data in the order of reception. Based on the received delivery data and the urgency level of delivery of the delivery data already stored in the storage means, and the delivery with the higher urgency level based on the urgency level of delivery acquired by the obtaining step A determining step for determining the order of data processing so that the data is processed first; and a processing step for processing the distribution data according to the order determined by the determining step. .

[0010] A data distribution program according to the invention of claim 13 causes a computer to execute the data distribution method according to claim 11.

[0011] Further, a data processing program according to the invention of claim 14 causes a computer to execute the data processing method according to claim 12.

[0012] A recording medium according to claim 15 is characterized in that the program according to claim 13 or 14 is recorded in a computer-readable state.

Brief Description of Drawings

[0013] FIG. 1 is a block diagram showing a functional configuration of a data distribution apparatus according to the present embodiment.

FIG. 2 is a flowchart showing a data distribution processing procedure of the data distribution apparatus according to the present embodiment.

FIG. 3 is an explanatory diagram showing an overview of a data distribution system according to the present embodiment.

FIG. 4 is a block diagram illustrating an example of a hardware configuration of a communication apparatus that is effective in the present embodiment.

FIG. 5 is a flowchart showing the contents of processing of the communication device.

FIG. 6 is an explanatory diagram showing data rearrangement.

Explanation of symbols

[0014] 100 data distribution device 101 reception

102 Memory unit

103 Detector

104 Judgment part

105 Timekeeping section

106 Acquisition Department

107 decision part

108 Communications Department

BEST MODE FOR CARRYING OUT THE INVENTION

[0015] A data distribution device and a data processing device according to the present invention will be described below with reference to the accompanying drawings.

The preferred embodiments of the data distribution method, data processing method, data distribution program, data processing program and recording medium will be described in detail.

[0016] (Embodiment)

(Functional configuration of data distribution device 100)

First, a functional configuration of the data distribution apparatus 100 according to the embodiment of the present invention will be described. FIG. 1 is a block diagram showing a functional configuration of a data distribution apparatus 100 according to the present embodiment. Further, in FIG. 1, the data distribution device 100 may fulfill the function as a data processing device.

In FIG. 1, a data distribution apparatus 100 includes a reception unit 101, a storage unit 102, a detection unit 103, a determination unit 104, a timing unit 105, an acquisition unit 106, a determination unit 107, and a communication unit. 108. Further, the data distribution device 100 may distribute distribution data directly to a terminal device (not shown), or may be configured to distribute distribution data to a terminal device via a plurality of data distribution devices 100. Further, the data distribution device 100 may be provided in the terminal device or may be a separate body. Furthermore, the data processing device and the terminal device may be the same body or separate bodies.

[0018] Reception unit 101 receives distribution data distributed to a terminal device (data processing device). The receiving unit 101 may simultaneously receive a plurality of distribution data distributed to the terminal device. Specifically, the receiving unit 101 is, for example, from another data distribution device 100. Receive delivery data. The receiving unit 101 may receive distribution data created by a creating unit (not shown) based on, for example, a roadside camera, a camera installed or mounted on a moving body, image data or sensor data of various sensor powers, and the like. Good. Here, the distribution data is data that can be distributed to the mobile body. Specifically, for example, it is necessary to convey information to the terminal device such as traffic information, information on roads such as curves, and information on dangers such as falling objects. Some information.

Storage unit 102 stores the distribution data received by receiving unit 101. Specifically, for example, a configuration may be adopted in which recording is sequentially performed on a rewritable storage medium and deleted after distribution. The storage unit 102 may store the information in the order received by the receiving unit 101, and store the information in the stored order in association with each distribution data.

[0020] The detection unit 103 detects a communication speed at which distribution data is distributed by the communication unit 108 described later. Specifically, for example, when distribution data is distributed to a terminal device via a plurality of data distribution devices 100, wired and Z or wireless communication speeds between them may be detected. The detection unit 103 may detect the processing speed of the application that processes the distribution data. Specifically, for example, when distribution data is distributed to a terminal device via a plurality of data distribution devices 100, the processing speed of each data distribution device 100 and the application of the terminal device may be detected. .

Determination unit 104 determines whether the communication speed is equal to or less than a predetermined speed. Specifically, for example, the determination is made based on the type of communication unit 108, the communication rate, and the processing capability. Further, when relaying a plurality of data distribution devices 100, the determination unit 104 determines that not only the communication speed of the own device but also the communication speed of one of the devices following the own device is a predetermined speed. You may decide whether or not: Further, the determination unit 104 may be configured to determine whether the processing speed of the application is equal to or lower than a predetermined speed.

[0022] Timekeeping section 105 measures the time taken to output distribution data to the terminal device.

Specifically, for example, a time when data is distributed from the data distribution device 100 to another data distribution device 100, a time when data is distributed from the data distribution device 100 to the terminal device, and distribution data is received at the terminal device. Then, the time taken to output to the output unit (not shown) is counted. Note that multiple data distribution devices or terminal devices It is also possible to measure the time until the processing of all or some of the applications of any device is completed.

The acquisition unit 106 acquires the urgency level of distribution of newly received distribution data and distribution data already stored in the storage unit 102. Specifically, for example, it is possible to obtain flag information indicating that it is an urgent requirement attached to the distribution data, and the emergency information associated with each distribution data. You may get the rank of the degree. Further, a flag or information indicating the content of the distribution data attached to the distribution data may be acquired, and a determination unit (not shown) may be provided to determine the urgency level by the determination unit. For example, an ID number indicating the content and type is attached to the distribution data, the ID number is acquired, and the determination unit determines the urgency. Alternatively, the determination may be made based on the content of the acquired distribution data itself. Further, the acquisition unit 106 may acquire the urgency level of distribution data distribution when the determination unit 104 determines that the communication speed is equal to or lower than a predetermined speed. On the other hand, if the determination unit 104 determines that the communication speed is not lower than the predetermined speed, the urgency level of distribution data distribution is not acquired.

[0024] In addition, the acquisition unit 106 may acquire an output time limit indicating the time limit for output of the newly received distribution data and the distribution data stored in the storage unit 102 in the terminal device. The output time limit is, for example, the time limit for when the distribution data must be output at the terminal device. Specifically, for example, when delivering information about a fallen object to a terminal device mounted on a mobile object, the information must be output before the mobile object arrives at a point where the fallen object exists. The time it takes to arrive at the point where the fallen object exists is the output deadline. Also, a predetermined output deadline may be determined in advance depending on the content of the distribution data and the urgency level. In addition, the acquisition unit 106 may acquire a processing time limit indicating the time limit for the end of processing in the terminal device of the newly received distribution data and the distribution data stored in the storage unit 102.

[0025] Based on the urgency level of distribution acquired by the acquisition unit 106, the determination unit 107 determines the distribution order so that distribution data with a high urgency level is distributed first. For example, when a flag indicating urgency is added to newly received distribution data, the next order of information with the flag indicating urgency in the distribution data already stored in the storage unit 102 Next, the order of distribution is determined. In addition, if there is no information with a flag indicating the degree of urgency in the distribution data already stored in the storage unit 102, the distribution order in the last order of the distribution data already stored in the storage unit 102 is set. decide. Further, when the urgency rank is associated with the distribution data, the distribution data is distributed in order of rank as compared with the urgency rank associated with the distribution data already stored in the storage unit 102. Determine the order. In addition, for example, when there are a plurality of distribution data with the same urgency level, the distribution order may be determined in consideration of the data amount of each distribution data. Specifically, the distribution order may be determined in ascending order of data amount among the distribution data. Further, the order may be determined so as to postpone the delivery data having a data amount exceeding a predetermined amount. By these, even if the urgency level is high, it is possible to prevent the delivery of other highly urgent delivery data from being delayed because the data amount is particularly large and the time-consuming data is delivered first.

[0026] When the determination unit 104 determines that the communication speed or the processing speed is equal to or higher than the predetermined speed, the determination unit 107 determines the distribution data distribution order in the order in which the distribution data is received. Specifically, for example, when the processing speed is equal to or higher than a predetermined speed, the distribution data is distributed because there is no distribution data waiting for the distribution order in the storage unit 102 or it can be considered that the distribution is performed with almost no waiting time. The order in which the distribution data is received is determined. In this case, the determination unit 107 determines the distribution data acquired by the acquisition unit 106 when the determination unit 104 determines that the communication speed or the processing speed has changed and is determined to be equal to or lower than the predetermined speed. Based on the urgency of delivery, the order of delivery of delivery data is determined so that the urgent is delivered in order.

[0027] In addition, when there is distribution data being distributed by the communication unit 108 described later, the determination unit 107 determines that the urgency level of newly received distribution data acquired by the acquisition unit 106 is the distribution data being distributed. If the degree of urgency is higher, the distribution of the distribution data being distributed may be interrupted, and the newly received distribution data may be determined in the order of distribution first. In this case, the distribution data that was being distributed is determined to be distributed according to the order of urgency or the order of distribution data without a flag indicating urgency. Further, the determination unit 107 outputs the output deadline acquired by the acquisition unit 106 and the distribution data timed by the time measuring unit 105. Depending on the time taken to output the data, the distribution data distribution order may be determined so that the distribution data is output to the terminal device within the output time limit. Further, the determination unit 107 distributes the terminal device within the processing time limit according to the processing time limit acquired by the acquiring unit 106 and the time taken to finish processing the distribution data timed by the time measuring unit 105. You can decide the order in which the distribution data is distributed to process the data.

[0028] The communication unit 108 distributes the distribution data in the order determined by the determination unit 107. In the communication unit 108, the method of distributing the distribution data may be wired or wireless. In addition, the communication unit 108 distributes the distribution data so as to output the distribution data to the terminal device within the output time limit according to the order determined by the determination unit 107. Further, the communication unit 108 may distribute the distribution data so that the terminal device processes the distribution data within the processing time limit according to the order determined by the determination unit 107.

In addition, the data processing apparatus may include a processing unit instead of the communication unit 108. The processing unit processes the distribution data according to the order determined by the determination unit 107. The processing unit processes the distribution data within the processing time limit according to the order determined by the determination unit 107. In this case, the determination unit 107 determines the order in which the data is processed so that the highly urgent distribution data is processed first.

[0030] (Data distribution processing procedure of data distribution apparatus 100)

Next, the data distribution processing procedure of the data distribution apparatus 100 will be described. FIG. 2 is a flowchart showing a data distribution processing procedure of the data distribution apparatus 100 according to the present embodiment. In the flowchart of FIG. 2, first, it waits until distribution data is received by the reception unit 101 (step S201: No loop). When distribution data is received (step S201: Yes), the detection unit 103 causes the communication unit 108 to To detect the communication speed for distributing the distribution data (step S202). In step S201, the distribution data may be one or plural.

Next, the determination unit 104 determines whether or not the communication speed detected in step S202 is equal to or lower than a predetermined speed (step S203). When the communication speed is equal to or lower than the predetermined speed in step S203 (step S203: No), the urgency level of the distribution data newly received in step S201 and the distribution data already stored in the storage unit 102 is determined. Obtain (step S204).

Next, based on the urgency level of the distribution acquired in step S204, the determination unit 107 determines the distribution order so that the high urgency level distribution data is distributed first. (Step S205). Then, the communication unit 108 distributes the distribution data according to the order determined in step S205 (step S206), and the series of processing ends. On the other hand, if the communication speed is not less than or equal to the predetermined speed in step S203 (step S2 03: No), the process proceeds to step S206, and distribution is performed following the end of the distribution data already stored in the storage unit 102. .

Note that in the flowchart of FIG. 2, the force for detecting the communication speed in step S202 is not limited to this. The communication speed may be detected before performing the process of step S201. Specifically, for example, when communication with a distribution destination apparatus that distributes distribution data becomes possible, the communication speed may be detected immediately. Further, for example, the data delivery process shown in FIG. 2 may be performed only when the communication speed is detected at regular intervals or at a predetermined interval and the communication speed is equal to or lower than the predetermined speed.

Further, in the flowchart of FIG. 2, the force for detecting the communication speed in step S202 is not limited to this. Specifically, for example, when distributing distribution data via a plurality of data distribution apparatuses 100, the communication speed of another data distribution apparatus 100 to which distribution data is distributed after the own apparatus may be detected.

In the flowchart of FIG. 2, the force for detecting the communication speed in step S202 is not limited to this. Specifically, for example, the processing speed of the application in the terminal device may be detected. In addition, the communication speed and processing speed need not be detected. In this case, it is possible to proceed to step S204 and obtain the urgency level regardless of the communication speed and processing speed.

In the flowchart of FIG. 2, the force for acquiring the urgency level in step S204 is not limited to this. Specifically, for example, an output time limit or a processing time limit output at the terminal device of the distribution destination may be acquired. In this case, in step S205, based on the time taken to output or process the distribution data to the terminal device timed by the time measuring unit 105, the terminal device is within the output time limit or the processing time limit. Determine the order in which the distribution data is distributed to output or process the distribution data

Further, in the flowchart of FIG. 2, the force that determines the distribution order so that distribution data with a high degree of urgency is distributed first in step S205 is not limited to this. For example, if there is distribution data being distributed, if the urgency level of the distribution data newly received in step S201 is higher than the urgency level of the distribution data being distributed, distribution of the distribution data being distributed is interrupted and a new The distribution data received in step 1 may be determined in the order of distribution first.

As described above, according to data distribution apparatus 100 of the present embodiment, the urgency level of distribution of distribution data newly received by acquisition unit 106 and distribution data already stored in storage unit 102 Based on the urgency level of the acquired distribution, the deciding unit 107 decides the order of delivery so that the urgent distribution data is delivered first, and is decided by the communication unit 108. The distribution data can be distributed in accordance with the order. Therefore, it is possible to deliver the data in order from the delivery data with the highest urgency that needs to be communicated to the user. Thus, for example, when a user is on a moving body, the user can distribute necessary information within a necessary time, and can perform safe and comfortable driving.

In addition, according to data distribution apparatus 100 of the present embodiment, detection unit 103 detects a communication speed for distributing distribution data, and determination unit 104 determines whether the communication speed is equal to or lower than a predetermined speed. To do. When the acquisition unit 106 determines that the communication speed is equal to or lower than the predetermined speed, the urgency level of distribution data distribution can be acquired. Therefore, for example, when sending delivery data to a delivery destination terminal device via a plurality of data delivery devices 100, it is necessary to inform the user of the delivery order when it is determined that the communication speed is below a predetermined speed. Therefore, the distribution data can be distributed without any extra processing. As a result, for example, when the user is on a moving body, the user can distribute the necessary information within the required time, thereby enabling safe and comfortable driving.

[0040] Furthermore, according to data distribution apparatus 100 of the present embodiment, when determining unit 104 determines that the communication speed is not less than or equal to a predetermined speed, acquisition unit 106 distributes distribution data. Without determining the urgency of the communication, the determining unit 107 can determine the order in which the distribution data is distributed in the order in which the distribution data is received. Therefore, when the communication speed is sufficiently high, the distribution order of distribution data can be distributed without changing the distribution order of distribution data. As a result, the user can distribute a lot of information and can drive comfortably, for example, when he / she is on a moving body.

[0041] Further, according to data distribution apparatus 100 of the present embodiment, distribution data acquired by acquisition unit 106 is distributed when determination unit 104 determines that the processing speed of the application is equal to or lower than a predetermined speed. Based on the urgent level, the determining unit 107 can determine the order in which the distribution data is distributed so that the urgent level is distributed in order. Therefore, for example, if the application processing takes time even if the communication speed is fast, it is necessary to tell the distribution order to the user in order of urgency, and it is possible to determine in order from the distribution data. . Thus, for example, when the user is on a moving body, the user can distribute necessary information within a necessary time, and can perform safe and comfortable driving.

Furthermore, according to data distribution apparatus 100 of the present embodiment, when there is distribution data being distributed by communication unit 108, the urgency of newly received distribution data acquired by acquisition unit 106 is increased. When the urgency level of the distribution data being distributed is higher, the determination unit 107 can interrupt the distribution of the distribution data being distributed and determine the newly received distribution data in the order of distribution first. Therefore, if there is highly urgent delivery data that must be communicated to the user immediately, it can be delivered immediately. As a result, for example, when a user is on a moving body, the user can distribute necessary information within a necessary time, and can perform safe and comfortable driving.

In addition, according to data distribution apparatus 100 of the present embodiment, the time limit for the output of the newly received distribution data acquired by acquisition section 106 and the distribution data stored in storage section 102 at the terminal apparatus Depending on the output deadline indicating the time limit and the time taken for the delivery data to be output to the terminal device by the timing unit 105, the decision unit 107 outputs the delivery data to the terminal device within the output deadline. The distribution order can be determined, and the distribution data can be distributed so that the distribution data is output to the terminal device within the output time limit according to the order determined by the communication unit 108. Therefore, the distribution data It can be output to the terminal device held by the user by the time required by the user. Thus, for example, when the user is on a moving body, the user can output necessary information within a necessary time, and can perform safe and comfortable driving.

Example

[0044] Examples of the present invention will be described below. The data distribution device 100 of the present invention acquires, for example, roadside camera force image data installed on the roadside, and is installed in a mobile body such as a vehicle (including a four-wheeled vehicle and a two-wheeled vehicle). It can be implemented by a data distribution sano that distributes various data to the device, a beacon that relays between the navigation device and the data distribution server, or a communication device connected to the navigation device. In the present embodiment, an example in which the data distribution apparatus 100 of the present invention is implemented by a communication apparatus will be described.

[0045] (Outline of data distribution system)

First, the outline of the data distribution system that works on the present embodiment will be described with reference to FIG. FIG. 3 is an explanatory diagram showing an outline of the data distribution system according to the present embodiment.

In FIG. 3, a data distribution system 300 includes a data distribution server 301, a roadside camera 3002, a navigation device 304 mounted on a vehicle, a communication device 305 connected to the navigation device, and data distribution. A beacon 303 (303a, 303b) that relays communication between the system 300 and the communication device 305 is also configured. Here, the communication device 305 may be a communication IZF provided in the navigation device 304 or may be a separate device. Data is distributed between the data distribution server 301 and the beacon 303 by communication 310, and data is distributed between the beacon 303 and the navigation device 304 by communication 311. Further, data is transmitted and received between the navigation device 304 and the communication device 305 by communication 312.

The data distribution server 301 acquires image data on the route from the roadside camera 302.

The image data includes, for example, a road condition captured by the roadside camera 302 as a moving image or a still image.

[0048] The data distribution server 301 determines whether or not the image data acquired from the roadside camera 302 includes data to be distributed to the navigation device 304 described later, and should be distributed. If data is included! / Read, perform image analysis on the image data.

[0049] Then, the data distribution server 301 determines the urgency of data to be distributed by image analysis on the image data. The determination of the degree of urgency may be performed based on, for example, the type of feature included in the image data. Specifically, for example, the determination is made based on the presence / absence of a vehicle included in the route, the collision of the vehicle, the person, the weather, the presence / absence of a falling object, and the like. More specifically, for example, a determination table in which urgency levels are ranked according to the types of features included in the image data may be used.

[0050] Next, the data distribution server 301 generates summary data that summarizes the image data according to the determined degree of urgency. The summary data corresponds to the emergency state in addition to the schematic map data of the feature included in the image data or the text data indicating the type of the feature, for example, the data indicating the emergency state of the image data. It may be alert data. Specifically, for example, the alert data may include text such as "Visibility attention" if the line-of-sight distance in the image data is less than a predetermined value, or "Cautions of falling objects" if the image data contains falling objects. Even data! /.

[0051] Also, image data and summary data may be associated with information on urgency.

Specifically, for example, a flag indicating an urgent requirement may be attached, or a rank of urgency may be associated. In addition, the output allowable time (maximum allowable time, approximate time) until data is output in the navigation device 304 is written in the header. In addition, information indicating the information output deadline time and information contents may be written in a header or the like.

[0052] Then, the data distribution server 301 distributes (downlinks) the image data or the summary data to the navigation device 304 via the beacon 303 (303a, 303b).

A plurality of roadside cameras 302 are installed on the road, capture road conditions at predetermined intervals, and transmit the captured image data to the data distribution server 301. Also, road conditions can be imaged in the case where an object is detected by a sensor (not shown) or an unnatural behavior of the vehicle is detected instead of a predetermined interval, and road traffic information is acquired. Thus, it is also possible to take an image of road conditions such as an accident or traffic jam.

In the description of FIG. 3, the image data captured by the roadside camera 302 is transmitted to the data distribution server 301. However, instead of the roadside camera 302, the image data is mounted on the vehicle. Probe information acquired by an in-vehicle device including a camera and various sensors may be transmitted to the data distribution server 301. The probe information is transmitted (uplink) to the data distribution server 301 via a beacon 303 (303a, 303b) by a plurality of in-vehicle devices, for example. The risk level is determined and summary data is generated.

The beacon 303 (303a, 303b) relays communication between the data distribution server 301 and the navigation device 304. This beacon 303 (303a, 303b) is a two-way short-range communication infrastructure such as DSRC (Dedicated Short Range Communications), etc., and administrative agencies collect vehicle probe information (running history information), etc., and use it as a traffic information service. It may be a relay device to be used. By using such infrastructure, the data distribution system 300 can be efficiently introduced.

[0056] The navigation device 304 is mounted on a vehicle and guides the vehicle to a destination point or displays the current point of the vehicle. In this embodiment, the navigation device 304 is connected to a communication device 305 having a function of communicating with the data distribution server 301 via the beacon 303 (303a, 303b) through which the vehicle passes, for example, and the data distribution server Summary data and image data from 301 are received by the communication device 305. Then, the received summary data and image data can be notified to the user by being transferred to the navigation device 304 and output by a display or a speaker (not shown) provided in the navigation device 304.

[0057] Further, the navigation device 304 captures a series of video information by a camera, acquires probe information including output values of various sensors such as a G sensor and a travel history, and transmits communication information to the beacon 303 (303a 303) , 303b) to the data distribution server 301.

[0058] (Hardware configuration of communication device 305)

Here, the hardware configuration of the communication apparatus 305 that is useful in the present embodiment will be described with reference to FIG. FIG. 4 is a block diagram illustrating an example of a hardware configuration of a communication apparatus that is effective in the present embodiment.

[0059] In FIG. 4, the communication device 305 includes a CPU 401, a ROM 402, a RAM 403, and a magnetic device. Disk drive 404, magnetic disk 405, optical disk drive 406, optical disk 407, audio IZF (interface) 408, speaker 409, input device 410, video iZ F411, display 412, and communication IZF 413 I have. Each component 401 to 413 is connected by a bus 420.

First, the CPU 401 governs overall control of the communication device 305. The ROM 402 stores various programs such as a boot program, a communication determination program, a data rearrangement program, an image analysis program, and a data generation program. The RAM 403 is used as a work area for the CPU 401.

The communication determination program controls, for example, a communication IZF 413, which will be described later, and detects the communication speed (data transfer speed) of the communications 310 and 311 shown in FIG. Specifically, the details of the processing are described with reference to FIGS. 5 and 6. For example, it is determined whether the data transfer rate is equal to or lower than a predetermined rate, and the data distribution server 301, beacon 303 shown in FIG. In the communication device 30 5!, It is decided whether to rearrange the data.

[0062] The data rearrangement program determines the order of distribution of the image data and summary data to be distributed to the navigation device 304. Specifically, when it is determined that the data is rearranged by the force communication determination program described with reference to FIGS. 5 and 6, it is stored in a magnetic disk 405 and an optical disk 407, which will be described later, and the navigation device 3 04 The data to be distributed is rearranged based on the urgent level so that the data with higher urgency is distributed first. In addition, in consideration of the amount of data, when there are multiple pieces of distribution data with the same urgency level, the distribution order may be rearranged in ascending order of the data amount. Furthermore, data whose data amount exceeds a predetermined amount may be rearranged in an order that will be postponed.

[0063] The image analysis program, for example, recognizes a feature included in the image data by analyzing the image data. Recognizing features includes, for example, recognition of falling objects on the road, visibility conditions such as smoke and fog, relative speed of approaching objects, weather such as snow, and wet surfaces of the road due to oil, etc. It is good. Further, the urgency level of the image data may be determined based on these.

[0064] The magnetic disk drive 404 is connected to the magnetic disk 405 according to the control of the CPU 401. Controls reading and writing of data to be written. The magnetic disk 405 records data written under the control of the magnetic disk drive 404. As the magnetic disk 405, for example, HD (node disk) or FD (flexible disk) can be used.

The optical disk drive 406 controls data reading Z writing on the optical disk 407 according to the control of the CPU 401. The optical disc 407 is a detachable recording medium from which data is read according to the control of the optical disc drive 406. As the optical disc 407, a writable recording medium can be used. Further, the removable recording medium may be a power MO of the optical disc 407, a memory card, or the like.

Examples of data stored in the magnetic disk 405 and the optical disk 407 include image data and summary data distributed to the navigation device 304. Specifically, for example, the navigation apparatus 304 stores the distribution schedule data in association with the distribution order.

The audio IZF 408 is connected to an audio output speaker 409, and audio is output from the speaker 409. Examples of the input device 410 include a remote controller having a plurality of keys for inputting characters, numerical values, and various instructions, a keyboard, a mouse, and a touch panel.

The video IZF 411 is connected to the display 412. Specifically, the video IZF411 is output from the graphic controller, for example, a graphic controller that controls the entire display 412, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and the like. It consists of a control IC that controls the display 412 based on the image data.

[0069] Display 412 displays an icon, a cursor, a menu, a window, or various data such as characters and images. As this display 412, for example, a CRT, a TFT liquid crystal display, a plasma display or the like can be adopted.

Communication IZF 413 is connected to a network via radio and functions as an interface between communication device 305 and CPU 401. The communication I / F 413 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 401.

[0071] Further, the communication IZF 413 may be configured to detect a communication speed. Specifically, for example The communication speed in any communication of the data distribution system 300 is detected. The communication speed is detected, for example, by detecting the type of communication IZF413 and the information power of the communication rate. The type of communication IZF413 is specifically USB or RC-232C (Recommend Standard 232 version C), for example.

[0072] Communication networks include LANs, WANs, public line networks and mobile phone networks. Specifically, the communication IZF 413 is configured by an FM tuner, for example.

[0073] The receiving unit 101, the storage unit 102, the detection unit 103, the determination unit 104, the timing unit 105, the acquisition unit 106, the determination unit 107, and the communication unit 108 included in the data distribution apparatus 100 illustrated in FIG. The CPU 401 executes a predetermined program using the programs and data recorded in the ROM 402, RAM 403, magnetic disk 405, optical disk 407, etc. in the communication device 305 shown in FIG. To realize.

That is, the communication device 305 of the present embodiment executes the program recorded in the ROM OM402 as a recording medium in the communication device 305, thereby providing the functions provided in the data distribution device 100 shown in FIG. The procedure shown in Fig. 2 can be executed.

Note that the hardware configuration of the data distribution server 301 and the beacon 303 is the same as that of the communication device 305. In the data distribution server 301, data generation programs are included in various programs recorded in the ROM 402. Different points are included.

[0076] The data generation program, for example, generates summary data that summarizes image data using image data. Summary data is generated according to the degree of risk determined by image recognition. Schematic data of features included in the image data or text indicating the type of the feature may be used as data indicating the emergency state of the image data. In addition to data, alert data corresponding to an emergency situation may be used.

Accordingly, the reception unit 101, the storage unit 102, the detection unit 103, the determination unit 104, the timing unit 105, the acquisition unit 106, the determination unit 107, and the communication unit 108 included in the data distribution apparatus 100 illustrated in FIG. The CPU 401 executes a predetermined program using the programs and data recorded in the ROM 402, RAM 403, magnetic disk 405, optical disk 407, etc. in the distribution server 301 or beacon 303, and each part in the data distribution server 301 or beacon 303 is changed. You can realize that function by controlling it. That is, the data distribution server 301 or the beacon 303 executes the program recorded in the ROM 402 as a recording medium in the data distribution server 301 or the beacon 303, whereby the data distribution apparatus 100 shown in FIG. The functions provided by can be executed according to the procedure shown in Fig. 2.

[0079] (Processing content of communication device)

Next, the processing contents of the communication device 305 will be described. FIG. 5 is a flowchart showing the contents of the processing of the communication device. In the flowchart of FIG. 5, first, it waits until the data to be transferred (distributed) to the navigation device 304 is received (step S501: No loop), and if the data is received (step S501: Yes), the communication IZF413 Then, the data transfer rate is detected (step S502).

In step S502, the data transfer rate is detected by detecting a discrimination result obtained by discriminating the type of communication IZF 413 such as USB or RS-232C or the type of terminal connected to communication IZF 413. In addition, for example, a determination result obtained by determining whether or not the communication IZF 413 is predetermined may be detected, the communication rate value on the specifications and effective of the communication IZF 413, and the communication IZF 413 of the device connected by the communication IZF 413 MIPS values and communication rate values may be detected.

Next, it is determined whether or not the data transfer speed detected in step S502 is below a predetermined speed (step S503). If the speed is not more than the predetermined speed in step S503 (step S503: Yes), it is determined whether or not the data waiting for transfer stored in the magnetic disk 405 and the optical disk 407 has a certain force (step S504). The data waiting to be transferred is, for example, data that has already been received as data to be transferred to the navigation device 304 but is not yet transferred, but is stored in the magnetic disk 405 and the optical disk 407.

[0082] If there is data waiting for transfer in step S504 (step S504: Yes), the urgency of the data accepted and data waiting for transfer is acquired in step S501 (step S505). Based on the urgency level acquired in step S505, the urgency level of the data received in step S501 is compared with the data waiting for transfer (step S506). The comparison of data urgency in step S506 will be described in detail in FIG. Next, based on the comparison result of the urgent level comparison performed in step S506, the transfer order to be transferred to the navigation device 304 is determined (step S507). Then, the data is transferred in accordance with the transfer order determined in step S507 (step S508), and the series of processing ends.

[0084] On the other hand, if the data transfer speed is not less than or equal to the predetermined speed in step S503 (step S503: No), the transfer order to be transferred to the navigation device 304 is determined at the end (step S509). Then, the data is transferred in order from the data waiting for transfer stored in the magnetic disk 405 and the optical disk 407. If there is no data waiting for transfer in step S504 (step S504: No), the process proceeds to step S508, and the received data is transferred as it is in step S501.

In the flowchart of FIG. 5, the data transfer rate is detected in step S502, but the present invention is not limited to this. Specifically, for example, when the processing of FIG. 5 is performed in the data distribution server 301 or the beacon 303, the data transfer rates in the data distribution server 301, the beacon 303, and the communication device 305 may be detected. For example, when the transfer speed of the data distribution server 301 or the beacon 303 is not lower than a predetermined speed and the transfer speed of the communication device 305 is lower than a predetermined speed, the process may proceed to step S504. In other words, when data is distributed by relaying some device between the own device and the delivery destination device (navigation device 304), the data in any device between the own device and the delivery destination device When it is determined that the transfer rate is equal to or lower than the predetermined rate, the process may proceed to step S504.

Further, in the flowchart of FIG. 5, the force for obtaining the urgency level in step S505 is not limited to this. Specifically, for example, an allowable output time or an output time limit output by a display or speaker included in the navigation device 304 may be acquired.

[0087] (Sort data)

Next, data rearrangement will be described with reference to FIG. FIG. 6 is an explanatory diagram showing data rearrangement. In FIG. 6, when the data transfer rate of the communication IZ F413 in the communication device 305 is equal to or lower than a predetermined rate, or the navigation device 304 The distribution of data 601 from the communication device 305 to the navigation device 304 when the data processing speed in FIG. Also, ◯ is data R with an urgency level lower than a predetermined value, and ◎ is data S with an urgency level higher than a predetermined value.

In (1), communication device 305 is transferring data R601a to navigation device 304. The communication device 305 stores data S601b, data R601c, and 601d waiting to be transferred. The order of data transfer is data R601a, data S60 lb, data R601c, and data R601d from the right. In (1), data S6 Ole is newly accepted.

Next, the urgency level of newly received data S601e is compared with the urgency level of each data 601 stored in the communication device 305. Since the urgency level of the data S601e is higher than the predetermined value, the next order of the data S601b having the urgency level higher than the predetermined value in the data 601 waiting for transfer stored in the communication device 305 is assigned. Therefore, the data transfer order is data R601a, data S601b, data S601e, data R601c, and data R601d as shown in (2).

As described above, when data S having an urgency level higher than a predetermined value is received, transfer is performed such that the other urgency levels in data 601 waiting for transfer are transferred next to data S having a higher level than the predetermined value. The order is assigned. Therefore, the communication device 305 can transfer the data S with the urgency level higher than the predetermined value before the data R with the urgency level lower than the predetermined value.

[0091] When the transfer of data R601a being transferred in (2) is completed, the transfer of data S601b is started as shown in (3). In (3), data R601f is newly accepted. Then, the urgency of newly received data R601f is compared with the urgency of each data 601 stored in communication device 305. Since the urgency level of the data R601 f is lower than a predetermined value, the last order of the data 6001 waiting for transfer stored in the communication device 305 is assigned. Therefore, the order of data transfer is data S601b, data S601e, data R601c, data R601d, and data R6 0 If as shown in (4).

In this way, when the urgency is lower than a predetermined value and data R is accepted, the order of the tail of the data waiting for transfer is assigned. Therefore, the communication device 305 has an urgency level of a predetermined value. Data R can be transferred in the order in which they were received.

In FIG. 6, when data R601a having an urgency level lower than a predetermined value is being transferred in (1), data S601b having an urgency level higher than a predetermined value is scheduled to be transferred next to the data R601a being transferred. Power that is not limited to this. For example, compare the urgency of data R6 Ola being transferred with data 601 waiting to be transferred, and if there is data S601b that is more urgent than data R601a being transferred, the transfer of data R601a is stopped, Data S601b with a high degree of urgency may be transferred first. Therefore, the data transfer order is data S601b, data R601a, data R601c, and data R601d. Further, in (2), the data transfer order is data S601b, data S601e, data R6 Ola, data R601c, and data R601d.

In FIG. 6, the data arrangement order is changed depending on whether or not the degree of urgency is higher than a predetermined value. However, the present invention is not limited to this. Specifically, for example, when ranks of urgency levels divided into a plurality of stages are associated, the data 601 is rearranged in descending order of rank urgency levels associated with the respective data 601. Also good. In addition, for example, when information on the output period or allowable time for outputting data on the display or speaker of the navigation device 304 is associated with each data, the data is output within the output period or allowable time. Rearrange the order of data 601 transfer as follows.

[0095] As described above, according to the data distribution system 300 of the present embodiment, the urgency of distribution of distribution data newly received by the acquisition unit 106 and distribution data already stored in the storage unit 102 is determined. Based on the urgency level of the acquired and acquired distribution, the deciding unit 107 decides the delivery order so that the high-grade urgent delivery data is delivered first, and is decided by the communication unit 108 Distribution data can be distributed according to the order. Therefore, it is possible to deliver the data in order from the delivery data with the highest urgency that needs to be communicated to the user. Thus, for example, when a user is on a moving body, the user can distribute necessary information within a necessary time, and can perform safe and comfortable driving.

Further, according to the data distribution system 300 of the present embodiment, the detection unit 103 detects the communication speed for distributing the distribution data, and the determination unit 104 determines whether the communication speed is equal to or lower than a predetermined speed. Judge whether or not. Then, when the acquisition unit 106 determines that the communication speed is equal to or lower than the predetermined speed, the urgency level of distribution data distribution can be acquired. Therefore, for example, when delivery data is sent to a delivery destination terminal device via a plurality of devices, it is necessary to inform the user of the delivery order when it is determined that the communication speed is equal to or lower than a predetermined speed. Since the distribution data can be determined in order of certain urgency, the distribution data can be distributed without extra processing. As a result, for example, when a user is on a moving body, the user can distribute necessary information within a required time, and can perform safe and comfortable driving.

Furthermore, according to the data distribution system 300 of the present embodiment, when the determination unit 104 determines that the communication speed is not less than or equal to the predetermined speed, the acquisition unit 106 can acquire the urgency level of distribution data distribution. Instead, the determining unit 107 can determine the order in which the distribution data is distributed in the order in which the distribution data is received. Therefore, when the communication speed is sufficiently high, the distribution order of distribution data can be distributed without changing the distribution order of distribution data. As a result, the user can distribute a lot of information and can drive comfortably, for example, when he / she is on a moving body.

[0098] Also, according to the data distribution system 300 of the present embodiment, when the determination unit 104 determines that the application processing speed is equal to or lower than the predetermined speed, the distribution of distribution data acquired by the acquisition unit 106 is performed. Based on the urgent level, the determining unit 107 can determine the order in which the distribution data is distributed so that the urgent level is distributed in order. Therefore, for example, if the application processing takes time even if the communication speed is fast, it is necessary to tell the distribution order to the user in order of urgency, and it is possible to determine in order from the distribution data. . Thus, for example, when the user is on a moving body, the user can distribute necessary information within a necessary time, and can perform safe and comfortable driving.

[0099] Also, according to the data distribution system 300 of the present embodiment, when there is distribution data being distributed by the communication unit 108, the urgency level of the newly received distribution data acquired by the acquisition unit 106 is distributed. If it is higher than the urgency level of the distribution data in the distribution, the determination unit 107 can interrupt the distribution of the distribution data being distributed and determine the distribution order of the newly received distribution data first. Therefore, it is necessary to inform users immediately. If there is highly urgent distribution data, it can be distributed immediately. As a result, for example, when the user is on a moving body, the user can distribute the necessary information within the required time, thereby enabling safe and comfortable driving.

[0100] In addition, according to the data distribution system 300 of the present embodiment, the deadline of output in the terminal device of the newly received distribution data acquired by the acquisition unit 106 and the distribution data stored in the storage unit 102 is shown. The order in which the distribution data is distributed so that the determination unit 107 outputs the distribution data to the terminal device within the output time limit according to the output time limit and the time taken until the distribution data is output to the terminal device by the time measuring unit 105 The distribution data can be distributed so that the distribution data is output to the terminal device within the output time limit in accordance with the order determined by the communication unit 108. Accordingly, the distribution data can be output to the terminal device held by the user by the time required by the user. As a result, for example, when the user is on a moving body, the user can output the necessary information within the required time, thereby enabling safe and comfortable driving.

[0101] As described above, according to the data distribution device, data processing device, data distribution method, data processing method, data distribution program, data processing program and recording medium of the present invention, the data distribution system 300 includes data The distribution order can be determined so that the data whose urgency level is higher than the predetermined value is distributed first in the apparatus upstream of the apparatus whose transfer speed or data processing speed is the predetermined speed or less. Accordingly, for example, when the data distribution server 301, the beacon 303, and the communication device 305 distribute data to the navigation device 304, if any of the data transfer rates is equal to or lower than a predetermined rate, or the navigation device When the data processing speed of 304 is lower than the predetermined speed, the data delivery order can be changed and data with high urgency can be delivered first. As a result, the user of the navigation device 304 mounted on the vehicle can distribute the necessary information within the required time, and can drive safely and comfortably.

[0102] The data distribution method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, flexible disk, CD-ROM, MO, or DVD. Then, the recording medium force is also read out by the computer. Further, this program may be a transmission medium that can be distributed via a network such as the Internet.

Claims

The scope of the claims

[1] In a data distribution apparatus that stores distribution data distributed to a terminal device in a storage means and distributes the data in the order received,

Acquisition means for acquiring newly received distribution data and the urgency level of distribution data already stored in the storage means;

Based on the urgency level of the distribution acquired by the acquisition unit, a determination unit that determines the distribution order so that the distribution data is distributed first is determined based on the urgency level of the distribution. Communication means for distributing the distribution data according to the order

A data distribution apparatus comprising:

[2] The apparatus includes a detecting unit that detects a communication speed for distributing the distribution data by the communication unit, and a determining unit that determines whether the communication speed is a predetermined speed or less. When it is determined that the communication speed is equal to or lower than a predetermined speed, the urgency level of distribution of the distribution data is acquired,

The determining means determines, based on the urgency level of distribution acquired by the acquiring means, the order of distribution so that the distribution data is distributed first when the urgency level is high. The data distribution device according to claim 1.

[3] When the determination unit determines that the communication speed is not equal to or lower than a predetermined speed, the acquisition unit does not acquire the urgency level of the distribution data,

2. The data distribution apparatus according to claim 1, wherein the determination unit determines an order of distributing the distribution data in an order of receiving the distribution data.

[4] The detection means detects a processing speed of the application of the terminal device that processes the delivery data,

The determining means determines whether the processing speed is equal to or lower than a predetermined speed;

When the determination means determines that the processing speed is equal to or lower than a predetermined speed, the determination means determines whether the urgency level is high based on the urgency level of the distribution data acquired by the acquisition means. , Deliver the delivery data to be delivered in order The data distribution device according to claim 1, wherein the order is determined.

[5] When there is distribution data being distributed by the communication unit, the determination unit determines that the urgency level of the newly received distribution data acquired by the acquisition unit is the urgency level of the distribution data being distributed. 2. The data distribution device according to claim 1, wherein if higher, the distribution of the distribution data being distributed is interrupted and the newly received distribution data is determined in the order of distribution first.

[6] A timing unit is provided for timing the time taken to output the distribution data to the terminal device,

The acquisition means obtains an output time limit indicating a time limit for output of the distribution data newly received and the distribution data stored in the storage means in the terminal device,

The determining means determines whether the terminal device within the output deadline corresponds to the output time limit acquired by the acquiring means and the time taken to output the distribution data timed by the time measuring means. Decide the distribution order of the distribution data so that the distribution data is output,

The said communication means delivers the said delivery data so that the said delivery data may be output to the said terminal device within the said output period according to the order determined by the said determination means. Data distribution device.

[7] The device includes time measuring means for measuring the time taken for the terminal device to output the distribution data and finish processing the terminal device,

The acquisition means acquires a processing time limit indicating a time limit for processing end in the terminal device of the distribution data newly received and the distribution data stored in the storage means,

The determining means determines whether the terminal device within the processing deadline is within the processing deadline according to the processing deadline acquired by the acquiring means and the time taken to finish processing the delivery data timed by the time measuring means. Decide the order of delivery of the delivery data so that the delivery data is processed,

The communication unit is configured to process the processing period according to the order determined by the determination unit. 7. The data distribution apparatus according to claim 1, wherein the distribution data is distributed so that the terminal device processes the distribution data within a limit.

[8] The distribution data is received and stored in a storage means, and the distribution data is processed in the order received, and the data processing apparatus is used to process the distribution data.

Based on the urgency level of the distribution acquired by the acquisition unit, a determination unit that determines the order of data processing so that the distribution data is processed first is determined based on the urgency level of the distribution. Processing means for processing the distribution data according to the order in which

A data processing apparatus comprising:

[9] When there is distribution data being processed by the processing means, the determining means determines that the urgency level of the newly received distribution data acquired by the acquiring means is the urgency level of the distribution data being processed. 9. The data processing device according to claim 8, wherein when the distribution data is higher, the processing of the distribution data being processed is interrupted and the newly received distribution data is determined in the order of processing first.

[10] The apparatus includes a time measuring unit that measures time taken to finish processing the distribution data, and the acquisition unit includes the newly received distribution data and a time limit for the end of processing of the distribution data stored in the storage unit Get the processing deadline showing

The determining means determines the distribution data within the processing time limit according to the processing time limit acquired by the acquiring means and the time taken to finish processing the distribution data timed by the time measuring means. Decide the order of processing the distribution data to process,

10. The data processing device according to claim 8, wherein the processing unit processes the distribution data to the terminal device within the processing period according to the order determined by the determination unit.

[11] Store the distribution data distributed to the terminal device in the storage means and distribute in the order received In the data distribution method in the data distribution apparatus,

An acquisition step of acquiring newly received distribution data and the urgency of distribution of distribution data already stored in the storage means;

Based on the urgency level of the distribution acquired by the acquisition step, a determination step for determining the distribution order so that the distribution data is distributed first is determined by the determination step. A communication process for distributing the distribution data in accordance with

A data distribution method comprising:

[12] A data processing method for receiving distribution data, storing it in a storage means, and processing the distribution data in the order received, and

Based on the urgency level of the distribution acquired by the acquisition step, the urgency level is determined by the determination step and the determination step for determining the order of data processing so that the distribution data is processed first. Processing steps for processing the distribution data in accordance with

A data processing method comprising:

[13] A data distribution program for causing a computer to execute the data distribution method according to claim 11.

[14] A data processing program causing a computer to execute the data processing method according to claim 12.

[15] A computer-readable recording medium in which the program according to claim 13 or 14 is recorded.