WO2008010408A1 - Navigation device, navigation method, navigation program and computer readable recording medium - Google Patents

Navigation device, navigation method, navigation program and computer readable recording medium Download PDF

Info

Publication number
WO2008010408A1
WO2008010408A1 PCT/JP2007/063265 JP2007063265W WO2008010408A1 WO 2008010408 A1 WO2008010408 A1 WO 2008010408A1 JP 2007063265 W JP2007063265 W JP 2007063265W WO 2008010408 A1 WO2008010408 A1 WO 2008010408A1
Authority
WO
WIPO (PCT)
Prior art keywords
traffic
traffic jam
information
navigation
increase
Prior art date
Application number
PCT/JP2007/063265
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroaki Shibasaki
Motohiko Takayanagi
Original Assignee
Pioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corporation filed Critical Pioneer Corporation
Publication of WO2008010408A1 publication Critical patent/WO2008010408A1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/0969—Systems involving transmission of navigation instructions to the vehicle having a display in the form of a map
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/096741—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/003—Maps
    • G09B29/006—Representation of non-cartographic information on maps, e.g. population distribution, wind direction, radiation levels, air and sea routes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/10—Map spot or coordinate position indicators; Map reading aids
    • G09B29/106—Map spot or coordinate position indicators; Map reading aids using electronic means

Definitions

  • the present invention relates to a navigation device that acquires and displays traffic jam information, a navigation method, a navigation program, and a computer-readable recording medium.
  • use of the present invention is not limited to the above-described navigation apparatus, navigation method, navigation program, and computer-readable recording medium. Background art
  • the navigation device scrolls a map around the vehicle position according to the travel of the vehicle, searches for a guidance route to the destination, and displays it on the map to show the driver the destination. I will guide you through.
  • VICS information road traffic information
  • vies road traffic information communication system
  • beacons such as optical beacons and radio wave beacons are used as means for communicating powerful VICS information (for example, see Patent Document 1 below).
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2006-3292
  • the VICS information provides the current traffic jam information, and there is an example of the problem that the traffic jam is increasing or the power is decreasing.
  • traffic congestion on the road tends to increase after it has been determined that the traffic jam is not long, the problem is that it will be involved in more traffic than expected when arriving on the road.
  • the traffic on the road tends to decrease, the road is selected even though it has been avoided. The problem is that it was better.
  • the navigation device includes an acquisition unit that acquires current traffic jam information and past traffic jam information about a predetermined location, current traffic jam information acquired by the acquisition unit, and Comparing means for comparing the past traffic jam information to obtain the increase / decrease tendency of the traffic jam, and a notifying means for notifying the increase / decrease tendency obtained by the comparison means.
  • the navigation method according to the invention of claim 5 is obtained by the acquisition step of acquiring the current traffic jam information and the past traffic jam information at a predetermined location, and the acquisition step. It includes a comparison step of comparing current traffic information and past traffic information to obtain the increase / decrease tendency of the traffic jam, and a notification step of notifying the increase / decrease trend obtained by the comparison step.
  • a navigation program according to the invention of claim 6 causes a computer to execute the navigation method according to claim 5.
  • the navigation program described in 6 is recorded.
  • FIG. 1 is a block diagram showing a functional configuration of a navigation device that is useful for an embodiment of the present invention.
  • FIG. 2 is a flowchart showing the processing of the navigation method which is effective in the embodiment of the present invention.
  • FIG. 3 is a block diagram showing a hardware configuration of the navigation device.
  • FIG. 4 is an explanatory diagram for explaining a display example when the increase / decrease in traffic congestion is displayed.
  • FIG. 5 is a flowchart for explaining the process of determining and presenting the increase / decrease tendency of the traffic jam information.
  • FIG. 1 is a block diagram showing a functional configuration of a navigation device that works according to an embodiment of the present invention.
  • the navigation apparatus according to this embodiment includes an acquisition unit 101, a comparison unit 102, and a notification unit 103.
  • the acquisition unit 101 acquires current traffic jam information and past traffic jam information for a predetermined location.
  • the past traffic information is not limited to one, but it is possible to obtain traffic information at many points in time in a time series, and to integrate the time series information into past traffic information.
  • the acquisition unit 101 can acquire the current traffic jam information via the beacon, and also holds the acquired current traffic jam information and collects the traffic jam information at the same point after the time has elapsed. When you get it, you can keep it! / And get the traffic information as past traffic information.
  • the comparison unit 102 compares the current traffic jam information acquired by the acquisition unit 101 and the past traffic jam information, and obtains an increase / decrease tendency of the traffic jam. Specifically, the comparison unit 102 can also obtain an increasing / decreasing tendency of the traffic jam length at the predetermined location by comparing the traffic jam lengths at the predetermined location. The comparison unit 102 can also obtain an increase / decrease tendency of the traffic congestion increase rate at the predetermined location by comparing the traffic congestion increase rate at the predetermined location.
  • the notification unit 103 notifies the increase / decrease tendency obtained by the comparison unit 102.
  • This increase / decrease trend can be notified via the display screen of the navigation device, and information such as increased traffic, decreased traffic, and no change in traffic conditions is reproduced by voice. That's right.
  • FIG. 2 is a flowchart showing the processing of the navigation method that is useful for the embodiment of the present invention.
  • the acquisition unit 101 acquires current traffic jam information for a predetermined location (step S201).
  • the acquiring unit 101 acquires past traffic jam information about a predetermined location (step S202). That is, the past traffic jam information is acquired.
  • the comparison unit 102 presents the current traffic jam information and the past traffic jam acquired by the acquisition unit 101.
  • the information is compared to obtain the increase / decrease tendency of the traffic jam (step S203).
  • the notification unit 103 notifies the increase / decrease tendency of the traffic jam (step S204).
  • FIG. 3 is a block diagram showing a hardware configuration of the navigation device.
  • the navigation apparatus to which the resource management apparatus of the embodiment is applied includes a CPU 301, a ROM 302, a RAM (memory) 303, a magnetic disk drive 304, a magnetic disk 305, and an optical disk drive 306.
  • Various sensors 317 and a beacon receiver 318 are provided.
  • Each component 301 to 318 is connected by a bus 320.
  • the CPU 301 governs overall control of the navigation device.
  • the ROM 302 records programs such as a boot program and a navigation program.
  • the RAM 303 is used as a work area for the CPU 301.
  • the magnetic disk drive 304 controls reading and writing of data with respect to the magnetic disk 305 according to the control of the CPU 301.
  • the magnetic disk 305 records data written under the control of the magnetic disk drive 304.
  • the magnetic disk 305 for example, HD (node disk) or FD (flexible disk) can be used.
  • the optical disk drive 306 controls reading and writing of data to the optical disk 307 according to the control of the CPU 301.
  • the optical disc 307 is a detachable recording medium from which data is read according to the control of the optical disc drive 306.
  • the optical disk 307 can also use a writable recording medium.
  • the removable recording medium may be a power MO of the optical disc 307, a memory card, or the like.
  • Map data used for route search and route guidance.
  • Map data includes buildings, rivers, and the ground It has background data that represents features (features) such as faces and road shape data that represents the shape of the road, and is drawn in two or three dimensions on the display screen of the display 314.
  • features features
  • road shape data that represents the shape of the road
  • the audio IZF 308 is connected to a microphone 309 for audio input and a speaker 310 for audio output.
  • the voice received by the microphone 309 is AZD converted in the voice IZF308.
  • sound is output from the speaker 310. Note that the sound input from the microphone 309 can be recorded on the magnetic disk 305 or the optical disk 307 as sound data.
  • Examples of the input device 311 include a remote controller, a keyboard, a mouse, and a touch panel that are provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like. Furthermore, the input device 311 can be connected to other information processing terminals such as a digital camera or a mobile phone terminal to input / output data.
  • the video IZF 312 is connected to a video input camera 313 and a video output display 314. Specifically, the video IZF312 is output from, for example, a graphic controller that controls the entire display 314, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the image data to be displayed, it is configured by a control IC or the like that controls display of the display 314.
  • VRAM Video RAM
  • the camera 313 captures images inside and outside the vehicle and outputs them as image data.
  • An image captured by the camera 313 can be recorded on the magnetic disk 305 or the optical disk 307 as image data.
  • the display 314 displays icons, cursors, menus, windows, or various data such as characters and images.
  • this display 314 for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.
  • Communication IZF 315 is connected to a network via radio and functions as an interface between the navigation device and CPU 301.
  • the communication I / F 315 is further connected to a communication network such as the Internet via wireless and functions as an interface between the communication network and the CPU 301.
  • Communication networks include LANs, WANs, public line networks, mobile phone networks, and the like.
  • the communication IZF 315 is composed of, for example, an FM tuner, a VICS / beacon receiver, a wireless navigation device, and other navigation devices, and acquires road traffic information such as traffic congestion and traffic regulations distributed from the VICS center.
  • VICS is a registered trademark.
  • the GPS unit 316 receives radio waves from GPS satellites and outputs information related to the position of the vehicle on which the navigation device is mounted.
  • the output information of the GPS unit 316 is used when the CPU 301 calculates the current position of the vehicle together with output values of various sensors 317 described later.
  • the information indicating the current location is information specifying one point on the map data, for example, latitude'longitude and altitude.
  • Various sensors 317 output information for determining the position and behavior of the vehicle, such as a vehicle speed sensor and an angular velocity sensor.
  • the output values of the various sensors 317 are used by the CPU 301 to calculate the current location of the vehicle and to measure the amount of change in speed and direction.
  • the beacon receiver 318 receives the beacon signal and takes it into the navigation device as VICS information.
  • This VICS information is provided by road traffic information communication system (VICS) such as traffic congestion, accidents, regulations, etc. It is displayed in real time on the navigation device.
  • Powerful VICS information is currently provided by beacons such as optical beacons and radio beacons.
  • the communication area of each communication means is 60 to 70 m per radio beacon and 3.5 m per optical beacon. .
  • FIG. 4 is an explanatory diagram for explaining a display example when the increase / decrease of the traffic jam is displayed.
  • This curve shows the road on which the vehicle travels, and the vehicle travels in this order in the order of point 401, point 402, and point 403. For example, if there is a traffic jam between the point 401 and the point 402, that is, in the section 410, this is displayed at that time, and the past traffic information is displayed.
  • FIG. 5 is a flowchart for explaining processing for discriminating and presenting an increase / decrease tendency of traffic jam information.
  • traffic jam information is acquired (step S501). Specifically, traffic jam information such as VICS is continuously acquired from radio waves and beacons, but the number of samples (or time) required for judgment is retained retroactively. Past data that exceeds the number of samples (or time) required for judgment may be deleted.
  • a point designation is acquired (step S502). In other words, it acquires the designation of the section or area for which traffic information is to be obtained. This point can be specified by the user. There are the following methods for selecting the designated point. (1) Select a specific location from the traffic congestion location displayed on the map using the touch panel or moving the cursor. (2) All traffic congestion points displayed on the screen are designated as designated points. (3) Designate a traffic jam spot on or near the set route as a designated point. (4) Designate all traffic congestion points with information as designated points.
  • step S503 data in which the current force at the designated point is also traced back a predetermined number of times is acquired.
  • the traffic information at the specified point is acquired.
  • step S504 it is determined whether or not the ratio of data in which the congestion length is greater than the previous data is greater than or equal to a predetermined value.
  • the following methods can be used to determine whether traffic congestion is increasing or clearing. In other words, regarding the congestion information at the designated point, the following is judged as an increasing trend, and the direction of resolution is judged as the opposite.
  • the ratio of the data whose required time has increased from the previous data is greater than or equal to a predetermined value.
  • (b-1) Compare the data going back a certain number of times (or hours) from the present, and the increase rate of congestion length has increased over time in all data, or the increase rate of congestion length has The ratio of data that is increasing from the data is more than a predetermined value.
  • (b 2) Compare the data retroactively for a predetermined number of times (or hours) from the present, and the increase rate of the average speed in all the data is negative and decreases with time, or the average speed increases The rate is minus and lower than the previous data!
  • (c) Determination by graph approximation.
  • C— 1) Plot the data of (a), find the quadratic function data approximated using the range of data that can be approximated by a suitable quadratic function, and if the quadratic coefficient is positive Judged as an increasing trend. If the coefficient is large, it is determined that the trend is increasing more rapidly.
  • (c-2) Plot the data of (b) and obtain approximate linear function data using data in a range that can be approximated by an appropriate linear function from the current point. If the linear coefficient is positive, Judgment that traffic congestion is increasing. Moreover, if there are many coefficients, it will determine with the more rapid traffic congestion increasing tendency.
  • (c 3) Apply other statistical judgment methods.
  • step S504 If it is determined that the ratio of increasing data is greater than or equal to a predetermined value (step S504: Yes), it is determined that the traffic congestion is increasing (step S505), and the process proceeds to step S509. If it is determined that the ratio of increasing data is not greater than or equal to the predetermined value (Step S504: No), it is determined whether the traffic length is less than the previous data and the data ratio is greater than or equal to the predetermined value (Step S506). . This determination is also performed in the same manner as the determination in step S504 whether the increased data is greater than or equal to the predetermined value.
  • step S506 If it is determined that the ratio of the reduced data is greater than or equal to a predetermined value (step S506: Yes), it is determined that the traffic congestion is decreasing (step S507), and the process proceeds to step S509. If it is determined that the ratio of the reduced data is not equal to or greater than the predetermined value (step S506: No), it is determined that the congestion tendency has changed!
  • the result is displayed (step S509). For example, when displaying on a navigation device, whether it is an increasing trend or a resolution direction beside the traffic jam display. An icon or the like indicating is displayed. It is acceptable to indicate the degree of increase or elimination as a numerical value. It can also be classified according to the color and shade of the traffic road. Then, a series of processing ends.
  • the accuracy of determination can also be improved by taking into account past traffic jam information.
  • Examples of the method include the following. First, unless there is a clear tendency to reduce traffic congestion (as described above) in the most recent data, traffic congestion will increase until it reaches the average maximum traffic jam length (average speed, required time between two locations) at the designated location. Judge as a trend. The average may be obtained by limiting the current time zone, day of the week, month, and season. In addition, the determination of “obvious” may be made by providing steps in the reduction amount, the increase rate change amount, and the coefficient in the above (a) to (c). Second, unless there is a clear tendency to reduce traffic congestion (as described above) in the latest data, the time that has passed since the current traffic congestion occurred Until it reaches “”.
  • the navigation 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, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by reading the recording medium force by the computer.
  • the program may be a transmission medium that can be distributed through a network such as the Internet.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Mathematical Physics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Ecology (AREA)
  • Navigation (AREA)

Abstract

An acquiring section (101) acquires current traffic jam information and past traffic jam information of a prescribed area. A comparing section (102) obtains increasing/reducing trend of the traffic jam by comparing the current traffic jam information with the past traffic jam information acquired by the acquiring section (101). A notifying section (103) notifies the increasing/reducing trend obtained from the comparing section (102). Thus, whether the traffic jam is to increase or to be eliminated can be judged from the time-series traffic jam information up to present. Accuracy of judgment is improved by using the past traffic jam information.

Description

明 細 書  Specification
ナビゲーシヨン装置、ナビゲーシヨン方法、ナビゲーシヨンプログラムおよ びコンピュータに読み取り可能な記録媒体  NAVIGATION DEVICE, NAVIGATION METHOD, NAVIGATION PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM
技術分野  Technical field
[0001] この発明は、渋滞情報を取得して表示するナビゲーシヨン装置、ナビゲーシヨン方 法、ナビゲーシヨンプログラムおよびコンピュータに読み取り可能な記録媒体に関す る。ただし、この発明の利用は、上述のナビゲーシヨン装置、ナビゲーシヨン方法、ナ ピゲーシヨンプログラムおよびコンピュータに読み取り可能な記録媒体に限らない。 背景技術  The present invention relates to a navigation device that acquires and displays traffic jam information, a navigation method, a navigation program, and a computer-readable recording medium. However, use of the present invention is not limited to the above-described navigation apparatus, navigation method, navigation program, and computer-readable recording medium. Background art
[0002] ナビゲーシヨン装置は、自車位置周辺の地図を車両の走行に応じてスクロール表 示するとともに、 目的地までの誘導経路を探索して該地図上に表示して運転者を目 的地まで案内する。力かるナビゲーシヨン装置のうち VICS対応ナビゲーシヨン装置 は、道路交通情報通信システム (vies)が提供する渋滞、事故、規制等の道路交通 情報 (VICS情報)を受信してリアルタイムに地図上に表示する機能を有している。  [0002] The navigation device scrolls a map around the vehicle position according to the travel of the vehicle, searches for a guidance route to the destination, and displays it on the map to show the driver the destination. I will guide you through. Among the powerful navigation devices, the VICS-compatible navigation device receives road traffic information (VICS information) such as traffic congestion, accidents, and regulations provided by the road traffic information communication system (vies) and displays it on the map in real time. It has a function.
[0003] VICS道路交通情報を利用することにより、運転者は渋滞道路、通行規制道路、事 故発生道路を回避して目的地に短時間で到達できるようになる。力かる VICS情報を 通信する手段としては、現在、光ビーコンや電波ビーコンなどのビーコンが利用され ている（たとえば、下記特許文献 1参照。 ) o  [0003] By using VICS road traffic information, a driver can reach a destination in a short time by avoiding a traffic jam road, a traffic regulation road, and a road where an accident occurred. Currently, beacons such as optical beacons and radio wave beacons are used as means for communicating powerful VICS information (for example, see Patent Document 1 below).
[0004] 特許文献 1 :特開 2006— 3292号公報  [0004] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2006-3292
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0005] し力しながら、 VICS情報により得られるのは、現在の渋滞情報であり、その渋滞が 増加傾向にあるの力減少傾向にあるのか分力もな 、と 、う問題が一例として挙げられ る。渋滞が長くないと判断して走行経路を決めた後に、その道路の渋滞が増加傾向 だった場合、その道路に到着したときには想定した以上の渋滞に巻き込まれてしまう という問題が挙げられる。また逆に、渋滞が長いと判断して走行経路を決めた後に、 その道路の渋滞が減少傾向だった場合、回避したにも関わらず、その道路を選択し たほうがよ力つたということになるという問題が挙げられる。 [0005] However, the VICS information provides the current traffic jam information, and there is an example of the problem that the traffic jam is increasing or the power is decreasing. The If traffic congestion on the road tends to increase after it has been determined that the traffic jam is not long, the problem is that it will be involved in more traffic than expected when arriving on the road. On the other hand, if it is determined that the traffic jam is long and the route is decided, then if the traffic on the road tends to decrease, the road is selected even though it has been avoided. The problem is that it was better.
課題を解決するための手段  Means for solving the problem
[0006] 請求項 1の発明に力かるナビゲーシヨン装置は、所定の場所についての現在の渋 滞情報と過去の渋滞情報を取得する取得手段と、前記取得手段によって取得された 現在の渋滞情報および過去の渋滞情報を比較して前記渋滞の増減傾向を得る比較 手段と、前記比較手段によって得られた増減傾向を通知する通知手段と、を備えるこ とを特徴とする。  [0006] The navigation device according to the invention of claim 1 includes an acquisition unit that acquires current traffic jam information and past traffic jam information about a predetermined location, current traffic jam information acquired by the acquisition unit, and Comparing means for comparing the past traffic jam information to obtain the increase / decrease tendency of the traffic jam, and a notifying means for notifying the increase / decrease tendency obtained by the comparison means.
[0007] また、請求項 5の発明にかかるナビゲーシヨン方法は、所定の場所につ!、ての現在 の渋滞情報と過去の渋滞情報を取得する取得工程と、前記取得工程によって取得さ れた現在の渋滞情報および過去の渋滞情報を比較して前記渋滞の増減傾向を得る 比較工程と、前記比較工程によって得られた増減傾向を通知する通知工程と、を含 むことを特徴とする。  [0007] Further, the navigation method according to the invention of claim 5 is obtained by the acquisition step of acquiring the current traffic jam information and the past traffic jam information at a predetermined location, and the acquisition step. It includes a comparison step of comparing current traffic information and past traffic information to obtain the increase / decrease tendency of the traffic jam, and a notification step of notifying the increase / decrease trend obtained by the comparison step.
[0008] また、請求項 6の発明に力かるナビゲーシヨンプログラムは、請求項 5に記載のナビ ゲーシヨン方法をコンピュータに実行させることを特徴とする。  [0008] A navigation program according to the invention of claim 6 causes a computer to execute the navigation method according to claim 5.
[0009] また、請求項 7の発明にかかるコンピュータに読み取り可能な記録媒体は、請求項[0009] The computer-readable recording medium according to the invention of claim 7 is
6に記載のナビゲーシヨンプログラムを記録したことを特徴とする。 The navigation program described in 6 is recorded.
図面の簡単な説明  Brief Description of Drawings
[0010] [図 1]図 1は、この発明の実施の形態に力かるナビゲーシヨン装置の機能的構成を示 すブロック図である。  [0010] FIG. 1 is a block diagram showing a functional configuration of a navigation device that is useful for an embodiment of the present invention.
[図 2]図 2は、この発明の実施の形態に力かるナビゲーシヨン方法の処理を示すフロ 一チャートである。  [FIG. 2] FIG. 2 is a flowchart showing the processing of the navigation method which is effective in the embodiment of the present invention.
[図 3]図 3は、ナビゲーシヨン装置のハードウェア構成を示すブロック図である。  FIG. 3 is a block diagram showing a hardware configuration of the navigation device.
[図 4]図 4は、渋滞の増減を表示した場合の表示例を説明する説明図である。  [FIG. 4] FIG. 4 is an explanatory diagram for explaining a display example when the increase / decrease in traffic congestion is displayed.
[図 5]図 5は、渋滞情報の増減傾向を判別して提示する処理を説明するフローチヤ一 トである。  [FIG. 5] FIG. 5 is a flowchart for explaining the process of determining and presenting the increase / decrease tendency of the traffic jam information.
符号の説明  Explanation of symbols
[0011] 101 取得部 [0011] 101 acquisition unit
102 比較部 103 通知部 102 Comparison part 103 Notification section
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0012] 以下に添付図面を参照して、この発明に力かるナビゲーシヨン装置、ナビゲーショ ン方法、ナビゲーシヨンプログラムおよびコンピュータに読み取り可能な記録媒体の 好適な実施の形態を詳細に説明する。  [0012] Exemplary embodiments of a navigation device, a navigation method, a navigation program, and a computer-readable recording medium according to the present invention will be described below in detail with reference to the accompanying drawings.
[0013] 図 1は、この発明の実施の形態に力かるナビゲーシヨン装置の機能的構成を示す ブロック図である。この実施の形態のナビゲーシヨン装置は、取得部 101、比較部 10 2、通知部 103により構成されている。  [0013] FIG. 1 is a block diagram showing a functional configuration of a navigation device that works according to an embodiment of the present invention. The navigation apparatus according to this embodiment includes an acquisition unit 101, a comparison unit 102, and a notification unit 103.
[0014] 取得部 101は、所定の場所についての現在の渋滞情報と過去の渋滞情報を取得 する。過去の渋滞情報は 1つとは限らず、時系列的に多くの時点の渋滞情報を取得 して、この時系列的な情報を総合して過去の渋滞情報とすることができる。取得部 10 1は、ビーコンを介して現在の渋滞情報を取得することができ、また、すでに取得した 現在の渋滞情報を保持しておいて、時間が経過した後に、同じ地点の渋滞情報を取 得したときに、保持して!/、た渋滞情報を過去の渋滞情報として取得することもできる。  [0014] The acquisition unit 101 acquires current traffic jam information and past traffic jam information for a predetermined location. The past traffic information is not limited to one, but it is possible to obtain traffic information at many points in time in a time series, and to integrate the time series information into past traffic information. The acquisition unit 101 can acquire the current traffic jam information via the beacon, and also holds the acquired current traffic jam information and collects the traffic jam information at the same point after the time has elapsed. When you get it, you can keep it! / And get the traffic information as past traffic information.
[0015] 比較部 102は、取得部 101によって取得された現在の渋滞情報および過去の渋滞 情報を比較して渋滞の増減傾向を得る。具体的には、比較部 102は、この所定の場 所の渋滞長を比較することにより、この所定の場所での渋滞長の増減傾向を得ること もできる。比較部 102は、この所定の場所の渋滞増加率を比較することにより、この所 定の場所での渋滞増加率の増減傾向を得ることもできる。  The comparison unit 102 compares the current traffic jam information acquired by the acquisition unit 101 and the past traffic jam information, and obtains an increase / decrease tendency of the traffic jam. Specifically, the comparison unit 102 can also obtain an increasing / decreasing tendency of the traffic jam length at the predetermined location by comparing the traffic jam lengths at the predetermined location. The comparison unit 102 can also obtain an increase / decrease tendency of the traffic congestion increase rate at the predetermined location by comparing the traffic congestion increase rate at the predetermined location.
[0016] 通知部 103は、比較部 102によって得られた増減傾向を通知する。この増減傾向 は、ナビゲーシヨン装置の表示画面を介して通知することができ、また、音声により渋 滞が増えている、渋滞が減少している、渋滞状況は変わらず、といった情報を再生す ることがでさる。  The notification unit 103 notifies the increase / decrease tendency obtained by the comparison unit 102. This increase / decrease trend can be notified via the display screen of the navigation device, and information such as increased traffic, decreased traffic, and no change in traffic conditions is reproduced by voice. That's right.
[0017] 図 2は、この発明の実施の形態に力かるナビゲーシヨン方法の処理を示すフローチ ヤートである。まず、取得部 101は、所定の場所についての現在の渋滞情報を取得 する（ステップ S201)。次に、取得部 101は、所定の場所についての過去の渋滞情 報を取得する (ステップ S202)。すなわち、過去の渋滞情報を取得する。  FIG. 2 is a flowchart showing the processing of the navigation method that is useful for the embodiment of the present invention. First, the acquisition unit 101 acquires current traffic jam information for a predetermined location (step S201). Next, the acquiring unit 101 acquires past traffic jam information about a predetermined location (step S202). That is, the past traffic jam information is acquired.
[0018] 比較部 102は、取得部 101によって取得された現在の渋滞情報および過去の渋滞 情報を比較して渋滞の増減傾向を得る (ステップ S203)。通知部 103は、渋滞の増 減傾向を通知する（ステップ S 204)。 [0018] The comparison unit 102 presents the current traffic jam information and the past traffic jam acquired by the acquisition unit 101. The information is compared to obtain the increase / decrease tendency of the traffic jam (step S203). The notification unit 103 notifies the increase / decrease tendency of the traffic jam (step S204).
[0019] 以上説明した実施の形態により、現在に連なる時系列の渋滞情報から、この渋滞が 増加傾向か解消の方向かを判断できるようになる。そして、過去の渋滞情報を利用 することにより判断の精度を上げることができる。 [0019] According to the embodiment described above, it is possible to determine whether the traffic jam is increasing or canceling based on the current time-series traffic jam information. The accuracy of judgment can be improved by using past traffic information.
実施例  Example
[0020] 図 3は、ナビゲーシヨン装置のハードウェア構成を示すブロック図である。図 3に示 すように、実施例のリソース管理装置が適用されるナビゲーシヨン装置は、 CPU301 と、 ROM302と、 RAM (メモリ） 303と、磁気ディスクドライブ 304と、磁気ディスク 305 と、光ディスクドライブ 306と、光ディスク 307と、音声 IZF (インターフェース） 308と、 マイク 309と、スピーカ 310と、人力デノイス 311と、映像 I/F312と、カメラ 313と、 ディスプレイ 314と、通信 IZF315と、 GPSユニット 316と、各種センサ 317と、ビーコ ン受信機 318と、を備えている。また、各構成部 301〜318は、バス 320によってそ れぞれ接続されている。  FIG. 3 is a block diagram showing a hardware configuration of the navigation device. As shown in FIG. 3, the navigation apparatus to which the resource management apparatus of the embodiment is applied includes a CPU 301, a ROM 302, a RAM (memory) 303, a magnetic disk drive 304, a magnetic disk 305, and an optical disk drive 306. Optical disk 307, audio IZF (interface) 308, microphone 309, speaker 310, human power device 311, video I / F 312, camera 313, display 314, communication IZF 315, GPS unit 316, Various sensors 317 and a beacon receiver 318 are provided. Each component 301 to 318 is connected by a bus 320.
[0021] まず、 CPU301は、ナビゲーシヨン装置の全体の制御を司る。 ROM302は、ブート プログラム、ナビゲーシヨンプログラムなどのプログラムを記録している。 RAM303は 、 CPU301のワークエリアとして使用される。  [0021] First, the CPU 301 governs overall control of the navigation device. The ROM 302 records programs such as a boot program and a navigation program. The RAM 303 is used as a work area for the CPU 301.
[0022] 磁気ディスクドライブ 304は、 CPU301の制御に従って磁気ディスク 305に対する データの読み取り Z書き込みを制御する。磁気ディスク 305は、磁気ディスクドライブ 304の制御で書き込まれたデータを記録する。磁気ディスク 305としては、たとえば、 HD (ノヽードディスク）や FD (フレキシブルディスク）を用いることができる。  The magnetic disk drive 304 controls reading and writing of data with respect to the magnetic disk 305 according to the control of the CPU 301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, HD (node disk) or FD (flexible disk) can be used.
[0023] 光ディスクドライブ 306は、 CPU301の制御に従って光ディスク 307に対するデー タの読み取り Z書き込みを制御する。光ディスク 307は、光ディスクドライブ 306の制 御に従ってデータが読み出される着脱自在な記録媒体である。光ディスク 307は、書 き込み可能な記録媒体を利用することもできる。また、この着脱可能な記録媒体とし て、光ディスク 307のほ力 MO、メモリカードなどであってもよい。  The optical disk drive 306 controls reading and writing of data to the optical disk 307 according to the control of the CPU 301. The optical disc 307 is a detachable recording medium from which data is read according to the control of the optical disc drive 306. The optical disk 307 can also use a writable recording medium. Further, the removable recording medium may be a power MO of the optical disc 307, a memory card, or the like.
[0024] 磁気ディスク 305や光ディスク 307に記録される情報の他の一例として、経路探索' 経路誘導などに用いる地図データが挙げられる。地図データは、建物、河川、地表 面などの地物 (フィーチャ)をあらわす背景データと、道路の形状をあらわす道路形 状データとを有しており、ディスプレイ 314の表示画面において 2次元または 3次元に 描画される。ナビゲーシヨン装置が経路誘導中の場合は、地図データと CPU301に よって取得された車両の現在地点とが重ねて表示されることとなる。 Another example of information recorded on the magnetic disk 305 and the optical disk 307 is map data used for route search and route guidance. Map data includes buildings, rivers, and the ground It has background data that represents features (features) such as faces and road shape data that represents the shape of the road, and is drawn in two or three dimensions on the display screen of the display 314. When the navigation device is guiding a route, the map data and the current vehicle location acquired by the CPU 301 are displayed in an overlapping manner.
[0025] 音声 IZF308は、音声入力用のマイク 309および音声出力用のスピーカ 310に接 続される。マイク 309に受音された音声は、音声 IZF308内で AZD変換される。ま た、スピーカ 310からは音声が出力される。なお、マイク 309から入力された音声は、 音声データとして磁気ディスク 305または光ディスク 307に記録可能である。  The audio IZF 308 is connected to a microphone 309 for audio input and a speaker 310 for audio output. The voice received by the microphone 309 is AZD converted in the voice IZF308. In addition, sound is output from the speaker 310. Note that the sound input from the microphone 309 can be recorded on the magnetic disk 305 or the optical disk 307 as sound data.
[0026] 入力デバイス 311は、文字、数値、各種指示などの入力のための複数のキーを備 えたリモコン、キーボード、マウス、タツチパネルなどが挙げられる。さらに、入力デバ イス 311は、デジタルカメラや携帯電話端末などの他の情報処理端末を接続し、デ ータの入出力をおこなうことができる。  [0026] Examples of the input device 311 include a remote controller, a keyboard, a mouse, and a touch panel that are provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like. Furthermore, the input device 311 can be connected to other information processing terminals such as a digital camera or a mobile phone terminal to input / output data.
[0027] 映像 IZF312は、映像入力用のカメラ 313および映像出力用のディスプレイ 314と 接続される。映像 IZF312は、具体的には、たとえば、ディスプレイ 314全体の制御 をおこなうグラフィックコントローラと、即時表示可能な画像情報を一時的に記録する VRAM (Video RAM)などのバッファメモリと、グラフィックコントローラから出力され る画像データに基づ 、て、ディスプレイ 314を表示制御する制御 ICなどによって構成 される。  The video IZF 312 is connected to a video input camera 313 and a video output display 314. Specifically, the video IZF312 is output from, for example, a graphic controller that controls the entire display 314, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the image data to be displayed, it is configured by a control IC or the like that controls display of the display 314.
[0028] カメラ 313は、車両内外の映像を撮像し、画像データとして出力する。カメラ 313で 撮像された画像は、画像データとして磁気ディスク 305あるいは光ディスク 307に記 録可能である。ディスプレイ 314には、アイコン、カーソル、メニュー、ウィンドウ、ある いは文字や画像などの各種データが表示される。このディスプレイ 314は、たとえば、 CRT, TFT液晶ディスプレイ、プラズマディスプレイなどを採用することができる。  [0028] The camera 313 captures images inside and outside the vehicle and outputs them as image data. An image captured by the camera 313 can be recorded on the magnetic disk 305 or the optical disk 307 as image data. The display 314 displays icons, cursors, menus, windows, or various data such as characters and images. As this display 314, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.
[0029] 通信 IZF315は、無線を介してネットワークに接続され、ナビゲーシヨン装置と CP U301とのインターフェースとして機能する。通信 I/F315は、さらに、無線を介して インターネットなどの通信網に接続され、この通信網と CPU301とのインターフェース としても機能する。  [0029] Communication IZF 315 is connected to a network via radio and functions as an interface between the navigation device and CPU 301. The communication I / F 315 is further connected to a communication network such as the Internet via wireless and functions as an interface between the communication network and the CPU 301.
[0030] 通信網には、 LAN, WAN,公衆回線網や携帯電話網などがある。具体的には、 通信 IZF315は、たとえば、 FMチューナー、 VICS/ビーコンレシーノ 、無線ナビ ゲーシヨン装置、およびその他のナビゲーシヨン装置によって構成され、 VICSセンタ 一から配信される渋滞や交通規制などの道路交通情報を取得する。なお、 VICSは 登録商標である。 [0030] Communication networks include LANs, WANs, public line networks, mobile phone networks, and the like. In particular, The communication IZF 315 is composed of, for example, an FM tuner, a VICS / beacon receiver, a wireless navigation device, and other navigation devices, and acquires road traffic information such as traffic congestion and traffic regulations distributed from the VICS center. VICS is a registered trademark.
[0031] GPSユニット 316は、 GPS衛星からの電波を受信し、ナビゲーシヨン装置を搭載し た車両の位置に関する情報を出力する。 GPSユニット 316の出力情報は、後述する 各種センサ 317の出力値とともに、 CPU301による車両の現在地点の算出に際して 利用される。現在地点を示す情報は、たとえば緯度'経度、高度などの、地図データ 上の 1点を特定する情報である。  [0031] The GPS unit 316 receives radio waves from GPS satellites and outputs information related to the position of the vehicle on which the navigation device is mounted. The output information of the GPS unit 316 is used when the CPU 301 calculates the current position of the vehicle together with output values of various sensors 317 described later. The information indicating the current location is information specifying one point on the map data, for example, latitude'longitude and altitude.
[0032] 各種センサ 317は、車速センサや角速度センサなどの、車両の位置や挙動を判断 するための情報を出力する。各種センサ 317の出力値は、 CPU301による車両の現 在地点の算出や、速度や方位の変化量の測定に用いられる。  Various sensors 317 output information for determining the position and behavior of the vehicle, such as a vehicle speed sensor and an angular velocity sensor. The output values of the various sensors 317 are used by the CPU 301 to calculate the current location of the vehicle and to measure the amount of change in speed and direction.
[0033] ビーコン受信機 318は、ビーコン信号を受信して、 VICS情報としてナビゲーシヨン 装置に取り込む。この VICS情報は、道路交通情報通信システム (VICS)により、渋 滞、事故、規制等の道路交通情報が提供される。そして、ナビゲーシヨン装置上で、 リアルタイムに表示する。力かる VICS情報は、現在、光ビーコンや電波ビーコンなど のビーコンにより提供され、各通信手段の通信エリアは、電波ビーコンが 1基につき 6 0〜70m、光ビーコンが 1基につき 3. 5mである。  [0033] The beacon receiver 318 receives the beacon signal and takes it into the navigation device as VICS information. This VICS information is provided by road traffic information communication system (VICS) such as traffic congestion, accidents, regulations, etc. It is displayed in real time on the navigation device. Powerful VICS information is currently provided by beacons such as optical beacons and radio beacons. The communication area of each communication means is 60 to 70 m per radio beacon and 3.5 m per optical beacon. .
[0034] 図 4は、渋滞の増減を表示した場合の表示例を説明する説明図である。この曲線は 車両が走行する道路を示し、この経路上を、地点 401、地点 402、地点 403の順に 車両が走行する。たとえば、地点 401から地点 402までの間、すなわち区間 410に渋 滞が発生していたとすると、その時点ではそのことを表示し、過去の渋滞情報として し "ねく。  FIG. 4 is an explanatory diagram for explaining a display example when the increase / decrease of the traffic jam is displayed. This curve shows the road on which the vehicle travels, and the vehicle travels in this order in the order of point 401, point 402, and point 403. For example, if there is a traffic jam between the point 401 and the point 402, that is, in the section 410, this is displayed at that time, and the past traffic information is displayed.
[0035] その後、地点 401から地点 403までの間、すなわち区間 420に渋滞が発生してい たとすると、区間 420に渋滞が発生したことを表示するとともに、渋滞長が区間 410か ら区間 420まで増えたことになるので、渋滞が増加方向であることを表示する。さらに 、渋滞が増加した、というだけでなく渋滞の増加率という観点力 ユーザに通知するこ ともできる。逆に、渋滞が区間 420から区間 410にまで減少した場合は、渋滞が減少 したと通知する。 [0035] After that, if there is a traffic jam from point 401 to point 403, that is, in the segment 420, the fact that the traffic jam has occurred in the segment 420 is displayed and the length of the traffic jam increases from the segment 410 to the segment 420. As a result, the fact that the traffic congestion is increasing is displayed. Furthermore, it is possible to notify the user not only that the traffic congestion has increased but also the power of increasing traffic congestion. Conversely, if the traffic congestion decreases from section 420 to section 410, the traffic congestion decreases. Notify
[0036] 図 5は、渋滞情報の増減傾向を判別して提示する処理を説明するフローチャートで ある。まず、渋滞情報を取得する (ステップ S501)。具体的には、 VICS等の渋滞情 報を電波やビーコン等から継続的に取得するが、判断に必要なサンプル数 (または 時間）を現在力も過去にさかのぼって保持しておく。判断に必要なサンプル数 (また は時間）を超えた過去のデータは消去しても良い。  FIG. 5 is a flowchart for explaining processing for discriminating and presenting an increase / decrease tendency of traffic jam information. First, traffic jam information is acquired (step S501). Specifically, traffic jam information such as VICS is continuously acquired from radio waves and beacons, but the number of samples (or time) required for judgment is retained retroactively. Past data that exceeds the number of samples (or time) required for judgment may be deleted.
[0037] 次に、地点の指定を取得する (ステップ S502)。すなわち渋滞情報を得たい区間や エリアの指定を取得する。この地点の指定はユーザが指定することもできる。指定地 点の選択は、次の方法がある。（1)地図上に道塗り表示された渋滞箇所から特定の 箇所をタツチパネルやカーソル移動等で選択する。 (2)画面に表示されたすベての 渋滞箇所を指定地点とする。（3)設定ルート上及びその近傍の渋滞箇所を指定地点 とする。（4)情報のあるすベての渋滞箇所を指定地点とする。  Next, a point designation is acquired (step S502). In other words, it acquires the designation of the section or area for which traffic information is to be obtained. This point can be specified by the user. There are the following methods for selecting the designated point. (1) Select a specific location from the traffic congestion location displayed on the map using the touch panel or moving the cursor. (2) All traffic congestion points displayed on the screen are designated as designated points. (3) Designate a traffic jam spot on or near the set route as a designated point. (4) Designate all traffic congestion points with information as designated points.
[0038] 次に、指定地点の現在力も所定回数分さかのぼったデータを取得する (ステップ S 503)。渋滞情報については現在から過去にさかのぼって保持している力 この過去 の渋滞情報のうち、指定地点の渋滞情報を取得する。  [0038] Next, data in which the current force at the designated point is also traced back a predetermined number of times is acquired (step S503). Ability to keep the traffic information going back from the present to the past From this past traffic information, the traffic information at the specified point is acquired.
[0039] 次に、渋滞長が前のデータより増えているデータの比率が所定以上か否かを判定 する (ステップ S504)。渋滞が増加傾向か解消の方向かを判定する方法として、次の ものが挙げられる。すなわち、指定地点の渋滞情報について、以下を増加傾向と判 定し、解消の方向はその逆と判定する。  [0039] Next, it is determined whether or not the ratio of data in which the congestion length is greater than the previous data is greater than or equal to a predetermined value (step S504). The following methods can be used to determine whether traffic congestion is increasing or clearing. In other words, regarding the congestion information at the designated point, the following is judged as an increasing trend, and the direction of resolution is judged as the opposite.
[0040] (a)渋滞の増減による判定。（a— 1)現在から所定回数分 (または時間分)過去にさ かのぼったデータを比較し、すべてのデータにおいて渋滞長が時間経過とともに増 えて 、る、または渋滞長が前のデータより増えて 、るデータの比率が所定以上である 。 （a— 2)現在力も所定回数分 (または時間分)過去にさかのぼったデータを比較し、 すべてのデータにおいて平均速度が時間経過とともに下がっている、または平均速 度が前のデータより下がっているデータの比率が所定以上である。（a— 3)現在から 所定回数分 (または時間分)過去にさかのぼったデータを比較し、すべてのデータに おいて指定の渋滞箇所を含む 2地点間の所要時間が時間経過とともに増えている、 または所要時間が前のデータより増えているデータの比率が所定以上である。 [0041] (b)渋滞の増加率による判定。 (b - 1)現在から所定回数分 (または時間分)過去に さかのぼったデータを比較し、すべてのデータにおいて渋滞長の増加率が時間経過 とともに増えている、または渋滞長の増加率が前のデータより増えているデータの比 率が所定以上である。 (b 2)現在から所定回数分 (または時間分)過去にさかのぼ つたデータを比較し、すべてのデータにおいて平均速度の増加率が時間経過ととも にマイナス且つ下がって 、る、または平均速度の増加率が前のデータよりマイナス且 つ下がって!/、るデータの比率が所定以上である。 (b - 3)現在から所定回数分 (また は時間分)過去にさかのぼったデータを比較し、すべてのデータにおいて指定の渋 滞箇所を含む 2地点間の所要時間の増加率が時間経過とともに増えている、または 所要時間の増加率が前のデータより増えているデータの比率が所定以上である。 [0040] (a) Judgment by increase / decrease of traffic jam. (A— 1) Compare the data going back a certain number of times (or hours) from the present, and the congestion length increases over time in all data, or the congestion length increases from the previous data Thus, the data ratio is equal to or greater than a predetermined value. (A-2) The current force is also compared with the data of the past number of times (or hours), and the average speed is decreasing with time in all data, or the average speed is lower than the previous data The data ratio is greater than or equal to a predetermined value. (A-3) Comparing data going back a certain number of times (or hours) from the present, the time required between two points including the designated traffic jam point increases with time in all data. Or the ratio of the data whose required time has increased from the previous data is greater than or equal to a predetermined value. [0041] (b) Judgment based on increase rate of traffic jam. (b-1) Compare the data going back a certain number of times (or hours) from the present, and the increase rate of congestion length has increased over time in all data, or the increase rate of congestion length has The ratio of data that is increasing from the data is more than a predetermined value. (b 2) Compare the data retroactively for a predetermined number of times (or hours) from the present, and the increase rate of the average speed in all the data is negative and decreases with time, or the average speed increases The rate is minus and lower than the previous data! (b-3) Compare the data going back a predetermined number of times (or hours) from the present, and the increase rate of the required time between the two points including the designated congestion point increases with time in all data The ratio of data that is increasing or the required time increase rate is higher than the previous data is greater than or equal to a predetermined value.
[0042] (c)グラフ近似による判定。（c— 1) (a)のデータをプロットし、現時点力 適当な 2次 関数で近似できる範囲のデータを用いて近似した 2次関数のデータを求め、その 2次 の係数が正であれば増加傾向と判定。また係数が多ければより急激な増加傾向と判 定。 (c- 2) (b)のデータをプロットし、現時点から適当な 1次関数で近似できる範囲 のデータを用いて近似した 1次関数のデータを求め、その 1次の係数が正であれば 渋滞増加傾向と判定。また係数が多ければより急激な渋滞増加傾向と判定する。 (c 3)その他の統計的な判定手法を適用する。  [0042] (c) Determination by graph approximation. (C— 1) Plot the data of (a), find the quadratic function data approximated using the range of data that can be approximated by a suitable quadratic function, and if the quadratic coefficient is positive Judged as an increasing trend. If the coefficient is large, it is determined that the trend is increasing more rapidly. (c-2) Plot the data of (b) and obtain approximate linear function data using data in a range that can be approximated by an appropriate linear function from the current point. If the linear coefficient is positive, Judgment that traffic congestion is increasing. Moreover, if there are many coefficients, it will determine with the more rapid traffic congestion increasing tendency. (c 3) Apply other statistical judgment methods.
[0043] 増えているデータの比率が所定以上と判定された場合 (ステップ S504 : Yes)、渋 滞増加傾向と判定して (ステップ S505)、ステップ S509に進む。増えているデータの 比率が所定以上でないと判定された場合 (ステップ S504 : No)、渋滞長が前のデー タより減って 、るデータの比率が所定以上か否かを判定する (ステップ S506)。この 判定も、ステップ S504の増えているデータが所定以上かの判定と同様に実行される  If it is determined that the ratio of increasing data is greater than or equal to a predetermined value (step S504: Yes), it is determined that the traffic congestion is increasing (step S505), and the process proceeds to step S509. If it is determined that the ratio of increasing data is not greater than or equal to the predetermined value (Step S504: No), it is determined whether the traffic length is less than the previous data and the data ratio is greater than or equal to the predetermined value (Step S506). . This determination is also performed in the same manner as the determination in step S504 whether the increased data is greater than or equal to the predetermined value.
[0044] 減っているデータの比率が所定以上と判定された場合 (ステップ S506 : Yes)、渋 滞減少傾向と判定して (ステップ S507)、ステップ S509に進む。減っているデータの 比率が所定以上でないと判定された場合 (ステップ S506 :No)、渋滞傾向が変わつ て!ヽな 、と判定する（ステップ S508)。そして結果を表示する (ステップ S509)。たと えばナビゲーシヨン装置で表示する場合、渋滞表示の脇に増加傾向か解消方向か を示すアイコン等を表示する。増加傾向か解消傾向の度合 、を数値で示しても良 ヽ 。また渋滞道塗りの色や濃淡で区分けすることもできる。そして、一連の処理を終了 する。 [0044] If it is determined that the ratio of the reduced data is greater than or equal to a predetermined value (step S506: Yes), it is determined that the traffic congestion is decreasing (step S507), and the process proceeds to step S509. If it is determined that the ratio of the reduced data is not equal to or greater than the predetermined value (step S506: No), it is determined that the congestion tendency has changed! The result is displayed (step S509). For example, when displaying on a navigation device, whether it is an increasing trend or a resolution direction beside the traffic jam display. An icon or the like indicating is displayed. It is acceptable to indicate the degree of increase or elimination as a numerical value. It can also be classified according to the color and shade of the traffic road. Then, a series of processing ends.
[0045] なお、過去の渋滞情報を加味して判定の精度を上げることもできる。その方法として 、次のものが挙げられる。一つ目は、直近のデータに明らかな渋滞減少傾向（上述） が認められない限り、指定地点の過去の平均最大渋滞長 (平均速度、 2地点間の所 要時間）に達するまでは渋滞増加傾向と判定する。平均は現在の時間帯、曜日、月 、季節を限定して求めても良い。また「明らかな」の判定については、上記 (a)〜（c) で減少量や増加率変化量、係数に段階を設けて判定しても良い。二つ目は、直近の データに明らかな渋滞減少傾向（上述）が認められない限り、現在の渋滞が発生して 力 経過した時間が「指定地点の過去の平均的な解消に転ずるまでの時間」に達す るまでは渋滞増加傾向と判定する。  [0045] It should be noted that the accuracy of determination can also be improved by taking into account past traffic jam information. Examples of the method include the following. First, unless there is a clear tendency to reduce traffic congestion (as described above) in the most recent data, traffic congestion will increase until it reaches the average maximum traffic jam length (average speed, required time between two locations) at the designated location. Judge as a trend. The average may be obtained by limiting the current time zone, day of the week, month, and season. In addition, the determination of “obvious” may be made by providing steps in the reduction amount, the increase rate change amount, and the coefficient in the above (a) to (c). Second, unless there is a clear tendency to reduce traffic congestion (as described above) in the latest data, the time that has passed since the current traffic congestion occurred Until it reaches “”.
[0046] 以上説明した実施例によれば、現在に連なる時系列の渋滞情報から、この渋滞が 増加傾向か解消の方向かを判断できるようになる。そして、過去の渋滞情報を利用 することにより判断の精度を上げることができる。  [0046] According to the embodiment described above, it is possible to determine whether the traffic jam is increasing or canceling based on time-series traffic jam information that continues to the present. The accuracy of judgment can be improved by using past traffic information.
[0047] なお、本実施の形態で説明したナビゲーシヨン方法は、予め用意されたプログラム をパーソナルコンピュータやワークステーションなどのコンピュータで実行することによ り実現することができる。このプログラムは、ハードディスク、フレキシブルディスク、 C D— ROM、 MO、 DVDなどのコンピュータで読み取り可能な記録媒体に記録され、 コンピュータによって記録媒体力も読み出されることによって実行される。またこのプ ログラムは、インターネットなどのネットワークを介して配布することが可能な伝送媒体 であってもよい。  Note that the navigation 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, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by reading the recording medium force by the computer. The program may be a transmission medium that can be distributed through a network such as the Internet.

Claims

請求の範囲 The scope of the claims
[1] 所定の場所にっ 、ての現在の渋滞情報と過去の渋滞情報を取得する取得手段と 前記取得手段によって取得された現在の渋滞情報および過去の渋滞情報を比較 して前記渋滞の増減傾向を得る比較手段と、  [1] An increase / decrease in the traffic congestion by comparing the current traffic information and the past traffic information acquired by the acquisition means with the current traffic information and the past traffic information acquired by the acquisition means at a predetermined location. A means of comparison to obtain trends,
前記比較手段によって得られた増減傾向を通知する通知手段と、  Notification means for notifying the increase / decrease tendency obtained by the comparison means;
を備えることを特徴とするナビゲーシヨン装置。  A navigation device comprising:
[2] 前記比較手段は、前記所定の場所の渋滞長を比較することにより、該所定の場所 での渋滞長の増減傾向を得ることを特徴とする請求項 1に記載のナビゲーシヨン装置  [2] The navigation device according to [1], wherein the comparison unit obtains an increase / decrease tendency of the traffic jam length at the predetermined location by comparing the traffic jam length at the predetermined location.
[3] 前記比較手段は、前記所定の場所の渋滞増加率を比較することにより、該所定の 場所での渋滞増加率の増減傾向を得ることを特徴とする請求項 1に記載のナビゲー シヨン装置。 [3] The navigation device according to [1], wherein the comparison unit obtains an increase / decrease tendency of the traffic increase rate at the predetermined location by comparing the traffic increase rate at the predetermined location. .
[4] 前記取得手段は、現在の渋滞情報をビーコンを介して取得して保持しておき、過去 の渋滞情報を、この保持された渋滞情報から取得することを特徴とする請求項 1〜3 のいずれか一つに記載のナビゲーシヨン装置。  [4] The acquisition means may acquire and hold current traffic jam information via a beacon, and acquire past traffic jam information from the held traffic jam information. The navigation device according to any one of the above.
[5] 所定の場所にっ 、ての現在の渋滞情報と過去の渋滞情報を取得する取得工程と 前記取得工程によって取得された現在の渋滞情報および過去の渋滞情報を比較 して前記渋滞の増減傾向を得る比較工程と、  [5] An increase / decrease in the traffic congestion by comparing the acquisition process of acquiring current traffic information and past traffic information at a predetermined location with the current traffic information and past traffic information acquired by the acquisition process. A comparison process to obtain a trend;
前記比較工程によって得られた増減傾向を通知する通知工程と、  A notification step of notifying the increase / decrease tendency obtained by the comparison step;
を含むことを特徴とするナビゲーシヨン方法。  A navigation method comprising:
[6] 請求項 5に記載のナビゲーシヨン方法をコンピュータに実行させることを特徴とする ナビゲーシヨンプログラム。 [6] A navigation program that causes a computer to execute the navigation method according to claim 5.
[7] 請求項 6に記載のナビゲーシヨンプログラムを記録したことを特徴とするコンピュータ に読み取り可能な記録媒体。 [7] A computer-readable recording medium in which the navigation program according to claim 6 is recorded.
PCT/JP2007/063265 2006-07-19 2007-07-03 Navigation device, navigation method, navigation program and computer readable recording medium WO2008010408A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006196326 2006-07-19
JP2006-196326 2006-07-19

Publications (1)

Publication Number Publication Date
WO2008010408A1 true WO2008010408A1 (en) 2008-01-24

Family

ID=38956742

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/063265 WO2008010408A1 (en) 2006-07-19 2007-07-03 Navigation device, navigation method, navigation program and computer readable recording medium

Country Status (1)

Country Link
WO (1) WO2008010408A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014024258A1 (en) * 2012-08-07 2014-02-13 三菱電機株式会社 Traffic information processing device
US10553108B2 (en) 2015-12-22 2020-02-04 Honda Motor Co., Ltd. Navigation server and navigation system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08287392A (en) * 1995-04-14 1996-11-01 Alpine Electron Inc On-vehicle navigator system
JPH09264748A (en) * 1996-03-28 1997-10-07 Matsushita Electric Ind Co Ltd Traffic-information display apparatus
JPH09292834A (en) * 1996-04-26 1997-11-11 Casio Comput Co Ltd Traffic information receiving device and traffic information informing method
JP2001124577A (en) * 1999-10-28 2001-05-11 Toyota Motor Corp Road information display device and route search device
JP2003222528A (en) * 2002-01-30 2003-08-08 Sony Corp Navigation device, output method of congestion history information and program
JP2003302229A (en) * 2002-04-08 2003-10-24 Hitachi Ltd Navigation device
JP2004085229A (en) * 2002-08-23 2004-03-18 Alpine Electronics Inc Navigation apparatus
JP2004144720A (en) * 2002-10-28 2004-05-20 Nissan Motor Co Ltd Navigation system and its traffic congestion display method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08287392A (en) * 1995-04-14 1996-11-01 Alpine Electron Inc On-vehicle navigator system
JPH09264748A (en) * 1996-03-28 1997-10-07 Matsushita Electric Ind Co Ltd Traffic-information display apparatus
JPH09292834A (en) * 1996-04-26 1997-11-11 Casio Comput Co Ltd Traffic information receiving device and traffic information informing method
JP2001124577A (en) * 1999-10-28 2001-05-11 Toyota Motor Corp Road information display device and route search device
JP2003222528A (en) * 2002-01-30 2003-08-08 Sony Corp Navigation device, output method of congestion history information and program
JP2003302229A (en) * 2002-04-08 2003-10-24 Hitachi Ltd Navigation device
JP2004085229A (en) * 2002-08-23 2004-03-18 Alpine Electronics Inc Navigation apparatus
JP2004144720A (en) * 2002-10-28 2004-05-20 Nissan Motor Co Ltd Navigation system and its traffic congestion display method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014024258A1 (en) * 2012-08-07 2014-02-13 三菱電機株式会社 Traffic information processing device
US10553108B2 (en) 2015-12-22 2020-02-04 Honda Motor Co., Ltd. Navigation server and navigation system

Similar Documents

Publication Publication Date Title
JP4399502B2 (en) Route display device, display control method, display control program, and recording medium
US8306736B2 (en) Method and apparatus for variable speed route simulation operation for navigation system
JP2008039399A (en) Server device, congestion avoidance processing program
JP5417530B2 (en) Display device, display method, display program, and recording medium
JPWO2009104244A1 (en) Travel planning device, navigation device, travel planning method, travel planning program, and recording medium
JP2007263881A (en) Position-setting device, position-setting method, position-setting program, and recording medium
JP4682210B2 (en) NAVIGATION DEVICE, PROCESS CONTROL METHOD, PROCESS CONTROL PROGRAM, AND RECORDING MEDIUM
JP4652472B2 (en) NAVIGATION DEVICE, NAVIGATION METHOD, NAVIGATION PROGRAM, AND RECORDING MEDIUM
WO2008010408A1 (en) Navigation device, navigation method, navigation program and computer readable recording medium
JP4682209B2 (en) DATA UPDATE DEVICE, DATA UPDATE METHOD, DATA UPDATE PROGRAM, AND RECORDING MEDIUM
JP2011022004A (en) Device, method and program for updating of map data, and recording medium
WO2007119336A1 (en) Navigation device, navigation method, navigation program, and computer-readable recording medium
JP2007257370A (en) Information presenting device, method and program, information providing device, method and program, and recording medium
JP5059020B2 (en) Information generating apparatus, information generating method, information generating program, and recording medium
JP2008160447A (en) Broadcast program receiving device, broadcast program reception planning device, broadcast program receiving method, broadcast program reception planning method, program, and recording medium
JP4976395B2 (en) Resource management apparatus, resource management method, resource management program, and computer-readable recording medium
JP3951790B2 (en) Navigation device, route display method, and storage medium
JPWO2007116651A1 (en) DEVICE CONTROL DEVICE, DEVICE CONTROL METHOD, DEVICE CONTROL PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM
JP4395535B2 (en) Navigation device, search control method, search control program, and recording medium
WO2007105500A1 (en) Navigation device, navigation method, navigation program, and computer readable recording medium
JP4603621B2 (en) Route guidance device, route guidance method, route guidance program, and recording medium
JP2009156697A (en) Route searching device, route searching method, route searching program, and recording medium
JP2008160445A (en) Broadcast wave information display device, broadcast wave information displaying method, broadcast wave information display program, and recording medium
JP2008160446A (en) Broadcast wave receiving device, broadcast wave receiving method, broadcast wave receiving program, and recording medium
JP4969659B2 (en) Route guidance device, route guidance method, route guidance program, and recording medium

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07768040

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

NENP Non-entry into the national phase

Ref country code: JP

122 Ep: pct application non-entry in european phase

Ref document number: 07768040

Country of ref document: EP

Kind code of ref document: A1