JP2007232448A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device improved in convenience. <P>SOLUTION: This navigation device 1 for displaying a course to a destination retrieved by a road course retrieval means or a route course retrieval means is equipped with: a starting date and time input means for inputting the starting date and time; a storage part 3 for storing congestion information of a road and route information of public transportation; the road course retrieval means for retrieving a road course to the destination; an operation means for operating a destination arrival time by the road course retrieved by the road course retrieval means; and the route course retrieval means for retrieving a route course to the destination by the public transportation. In the device 1, when a difference between an arrival time T1 operated by including a delay time caused by congestion corresponding to the starting date and time based on the congestion information and an arrival time T2 operated by not including the delay time caused by congestion is larger than a prescribed time δ1, the route course is retrieved, and when the difference between the arrival times T1, T2 is smaller than the prescribed time δ1, the route course is not retrieved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a navigation device that searches and displays road routes and route routes.

A conventional navigation apparatus is disclosed in Patent Document 1. This navigation device can perform a road route search by car and a route route search by public transportation such as a railway. The route to the destination is searched for a road route by car and a route route is searched for by public transport, and the route with the earlier arrival time is displayed. When the road route is displayed, route guidance is performed while the vehicle is running. As a result, the user can be informed of the route that can arrive at the destination early.
JP 2001-116575 A (page 3 to page 6, FIG. 3)

  However, according to the conventional navigation device, the route search takes time because the search for the road route and the search for the route route are performed. For this reason, there is a problem that the convenience of the navigation device is lowered.

  An object of this invention is to provide the navigation apparatus which can improve the convenience.

In order to achieve the above object, the present invention provides a departure date and time input means for inputting a departure date and time, a storage unit for storing road congestion information and route information for public transportation, and a road for searching for a road route to a destination. Route search means, first calculation means for calculating the arrival time of the destination by the road route searched by the road route search means, and route route search means for searching for a route route by public transportation to the destination. A navigation device for displaying a route to a destination searched by the road route search means or the route route search means,
The first arrival time calculated by the first calculation means including the delay time due to the traffic jam according to the departure date based on the traffic jam information, and the second arrival calculated by the first calculation means without the delay time due to the traffic jam When the difference from the time is larger than a predetermined time, the route route is searched by the route route searching means. When the difference between the first and second arrival times is smaller than the predetermined time, the route route searching means It is characterized by not searching for route routes.

  According to this configuration, the date and time of departure to the destination is input by the departure date and time input means. The road route search means acquires traffic jam information corresponding to the departure date and time from the storage unit and searches for a road route to the destination. The first computing means computes the first arrival time arriving at the destination by the road route specified by the road route searching means in consideration of the traffic jam based on the traffic jam information.

  The first calculating means calculates the second arrival time arriving at the destination by the road route specified by the road route searching means without considering the traffic jam. When the road route searched by the road route search means includes a detour due to traffic congestion, the second arrival time is calculated from the road route including the detour. The second arrival time may be calculated from a road route that does not include a detour by re-searching the road route.

  When the difference between the first and second arrival times is greater than the predetermined time, the route route search means acquires route information of public transportation according to the departure date and time from the storage unit and searches for the route route to the destination. To do. For example, when the arrival time by the route route is earlier than the road route, the route route is displayed. When the difference between the first and second arrival times is smaller than the predetermined time, the route route is not searched by the route route searching means, and the road route searched by the road route searching means is displayed.

  Public transportation includes railways traveling on a fixed route, and public transportation is also included when some buses or taxis traveling on the road are used.

  According to the present invention, in the navigation device configured as described above, whether or not the route route search unit performs a route route search when the difference between the first and second arrival times is greater than the predetermined time. It is characterized by being selectable.

  In the navigation device having the above-described configuration, the present invention further includes second calculation means for calculating the arrival time of the destination by the route route searched by the route route search unit, and the third arrival calculated by the second calculation means. A route route is displayed when the time is earlier than the first arrival time by more than a predetermined time, and a road route is displayed when the third arrival time is not earlier than the first arrival time by more than the predetermined time. It is said.

  According to this configuration, when the route route is specified by the route route search unit, the second calculation means calculates the third arrival time at which the route arrives at the destination. When the third arrival time is earlier than the first arrival time by a predetermined time, the route route searched by the route route search unit is displayed. If the third arrival time does not exceed a predetermined time before the first arrival time, the road route searched by the road route search unit is displayed.

  According to the present invention, in the navigation device having the above configuration, when the road route search means extracts a road route including a detour based on traffic jam information and calculates a first arrival time, the road route passing through the detour The second arrival time is calculated by the above. According to this configuration, when the road route considering traffic congestion includes a detour, the second arrival time is calculated without including the delay time by the road route including the detour without re-searching the road route. The

  According to the present invention, when the difference between the first arrival time including the delay time due to the traffic jam and the second arrival time not including the delay time is smaller than the predetermined time, the route route is not searched by the route route searching means. Route search time can be shortened. Therefore, the convenience of the navigation device is improved.

  Further, according to the present invention, when the difference between the first and second arrival times is larger than the predetermined time, the user can select whether or not to search for a route route by the route route search means. Depending on the situation, route search time reduction and detailed route search can be selected. Therefore, the convenience of the navigation device is further improved.

  Further, according to the present invention, the road route is displayed when the third arrival time arriving at the destination by the route route is not earlier than the first arrival time by a predetermined time, so the arrival time by the road route is slightly later. Even you can reach your destination with ease.

  Further, according to the present invention, when the road route searched by the road route search unit includes a detour due to traffic jam, the second arrival time is calculated by the road route passing through the detour, so the road route is not re-searched. The route search time can be further shortened.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of a navigation device according to an embodiment. The navigation device 1 has a control unit 2 composed of a CPU. A storage unit 3, a display unit 4, an operation unit 5, a current position detection unit 6, and a VICS reception unit 7 are connected to the control unit 2.

  The storage unit 3 includes a RAM, a ROM, and an HDD, and stores an operation program of the navigation device 1 and temporarily stores a calculation result by the control unit 2. The control unit 2 executes the operation program to control each part of the navigation device 1. The storage unit 3 includes a map storage unit 3a, a traffic jam information storage unit 3b, and a route information storage unit 3c.

  The map information storage unit 3a stores map information. The traffic jam information storage unit 3b stores a traffic jam information database shown in FIG. The traffic jam information includes information on road conditions such as delay times due to traffic jams by day of the week, date, and time in each section on the road, one-way traffic, closed traffic, and the like. The route information storage unit 3c stores a database of route information of public transportation. Public transportation includes railways, ships, etc. that travel on a defined route, and public transportation is also included when some buses and taxis traveling on the road are used. When a bus or taxi is used in all sections, it is not included in public transportation and is excluded from the route route search described later.

  The display unit 4 includes a liquid crystal panel and displays a map and a setting screen. The operation unit 5 includes a remote controller, a touch panel provided on the surface of the display unit 4, and the like, and performs an input operation by a user. The current position detection unit 6 includes a GPS and detects the current position of the user. The VICS receiving unit 7 receives road traffic information. Thereby, the database of traffic jam information stored in the storage unit 3 is updated.

  The navigation device 1 searches for a route to a registered destination according to information input from the operation unit 5 and displays a road route on the map screen of the display unit 4 to guide the user. The destination is specified by inputting an address, a telephone number, coordinates, and the like with the operation unit 5, stored in the storage unit 3, and registered. Further, the destination can be specified by searching the facility by the character string input by the operation unit 5.

  FIG. 3 is a flowchart showing the route search operation. When the route search process is called up, a departure date and time input screen is displayed in step # 11 (departure date and time input means), and input by the operation unit 5 is awaited. When the departure date is input, the process proceeds to step # 12. In step # 12 (road route search means), the road route to the destination is searched and specified based on the map information in the map storage unit 3a. At this time, a traffic information database may be acquired from the traffic information storage unit 3b, and a road route including a detour that avoids traffic may be specified based on traffic information of each section of departure date and time.

  In step # 13 (first calculation means), the arrival time T1 (first arrival time) of the destination by the road route specified in step # 12 is calculated. The arrival time T1 is calculated including the delay time due to the traffic jam according to the departure date and time based on the traffic jam information. In step # 14 (first calculation means), the arrival time T2 (second arrival time) is calculated without including the delay time due to traffic jam. The arrival time T2 is calculated by subtracting the delay time in the same road route passing through the detour even when the road route searched in step # 12 includes a detour for avoiding traffic congestion.

  In step # 15, it is determined whether or not the difference between the arrival time T1 and the arrival time T2 is smaller than the predetermined time δ1. If the difference between the arrival time T1 and the arrival time T2 is smaller than the predetermined time δ1, the process proceeds to step # 20. If the difference between the arrival time T1 and the arrival time T2 is greater than the predetermined time δ1, the process proceeds to step # 16.

  In step # 16, it is determined whether or not a route route by public transportation is to be searched. If the user gives an instruction not to search for a route route, the process proceeds to step # 20. If there is an instruction to search for a route route by the user, the process proceeds to step # 17. Whether or not to search for route routes may be set in advance by the user.

  In step # 17 (route route search means), a route route to the destination is searched and specified based on the route information in the route information storage unit 3c. In step # 18 (second calculation means), the arrival time T3 (third arrival time) of the destination by the route is calculated. In step # 19, it is determined whether or not the difference between the arrival time T1 and the arrival time T3 is smaller than the predetermined time δ2.

  If the difference between the arrival time T1 and the arrival time T3 is smaller than the predetermined time δ2, the process proceeds to step # 20. In step # 20, the arrival time T1 is displayed on the display unit 4. In step # 21, the road route searched in step # 12 is displayed on the display unit 4. For example, when the predetermined time δ2 is set to 0 and the road route is earlier than the route route, the road route is displayed. In addition, the predetermined time δ2 is set to 15 minutes, and even if the arrival time T1 by the road route is slightly late, it is possible to move by car and arrive at the destination easily. Then, the route search process is terminated, and route guidance using the road route is performed.

  If the difference between the arrival time T1 and the arrival time T3 is greater than the predetermined time δ2, the process proceeds to step # 22. In step # 22, the arrival time T3 is displayed on the display unit 4. In step # 23, the route route searched in step # 17 is displayed on the display unit 4. For example, when the predetermined time δ2 is set to 0 and the route route is earlier than the road route, the route route is displayed. In addition, when the predetermined time δ2 is set to 15 minutes and the arrival time T3 by the route route is earlier than 15 minutes, the user can quickly reach the destination by moving by public transportation.

  According to the present embodiment, when the difference between the arrival time T1 including the delay time due to the traffic jam and the arrival time T2 not including the delay time is smaller than the predetermined time δ1 as determined in Step # 15, the process proceeds to Step # 20. Since the route search is not performed, the route search time can be shortened. Therefore, the convenience of the navigation device 1 is improved.

  In addition, when the difference between the arrival times T1 and T2 is greater than the predetermined time δ1, the user can select whether or not to search for a route route, so that the route search time can be shortened according to the situation of the user. Detailed route search can be selected. Therefore, the convenience of the navigation device 1 is further improved.

  Further, even if the road route searched in step # 12 includes a detour, the arrival time T2 is calculated from the road route that passes through the detour without re-searching the road route. As a result, the arrival time T2 is later than the arrival time by the road route not including the detour without considering the traffic jam at all. However, since the arrival time T2 does not include the delay time even when passing through the detour, the difference in arrival time is within a slight range. In addition, route guidance is not performed on a road route that does not consider traffic jams.

  Therefore, by not re-searching the road route when calculating the arrival time T2, it is only necessary to subtract the delay time, and the route search time can be further reduced. A road route that does not include a detour may be re-searched when the arrival time T2 is calculated. At this time, since it is only necessary to search again for the detour part, the time increase is slight, and the time can be shortened compared to the case where the route route is always searched as in the prior art.

  INDUSTRIAL APPLICABILITY The present invention can be used for a navigation device that searches and displays road routes and route routes.

It is a block diagram which shows the structure of the navigation apparatus of embodiment of this invention. It is a flowchart which shows the operation | movement of the route search of the navigation apparatus of embodiment of this invention. It is a database which shows the traffic information of the navigation apparatus of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Control part 3 Storage part 3a Map information storage part 3b Congestion information storage part 3c Route information storage part 4 Display part 5 Operation part 6 Present position detection part

Claims (4)

A departure date and time input means for inputting a departure date and time, a storage unit for storing road congestion information and route information for public transport, a road route search means for searching for a road route to a destination, and the road route search means 1st calculating means for calculating the arrival time of the destination by the searched road route, and route route searching means for searching for a route route by public transportation to the destination, the road route searching means or the route route In a navigation device that displays a route to a destination searched by a search means,
The first arrival time calculated by the first calculation means including the delay time due to the traffic jam according to the departure date based on the traffic jam information, and the second arrival calculated by the first calculation means without the delay time due to the traffic jam When the difference from the time is larger than a predetermined time, the route route is searched by the route route searching means. When the difference between the first and second arrival times is smaller than the predetermined time, the route route searching means A navigation device characterized by not performing a route route search.   The user can select whether or not to search for a route route by the route route search unit when the difference between the first and second arrival times is larger than the predetermined time. Navigation device.   Second calculation means for calculating the arrival time of the destination by the route route searched by the route route search unit is provided, and the third arrival time calculated by the second calculation means exceeds a predetermined time from the first arrival time. 3. The route according to claim 1, wherein a route route is displayed when the route is earlier than the first arrival time, and a road route is displayed when the third arrival time is not earlier than the first arrival time by a predetermined time. Navigation device. When the road route search means extracts a road route including a detour and calculates a first arrival time based on traffic jam information, the second arrival time is calculated from the road route passing through the detour. The navigation device according to any one of claims 1 to 3.

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