JP2009271006A - Device for providing path information, its control method, and control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a path information providing device enabling a user to decide whether he/she can drop in stopovers by providing the information comparing the information about the first path with the information about the second path including the stopovers. <P>SOLUTION: In this path information guiding device, a cursor point specifying part 35 specifies a position indicated by a cursor on a map on a screen scrolled by the user when screen scrolling stops for a fixed period of time as a cursor point. A path calculating part 33 calculates the optimum path up to the destination via the stopovers from his/her current location in the cursor point specifying part 35. An information comparing part 36 compares the required hours and the distance from his/her current location to the destination and calculated in the path calculating part 33 by using the cursor point as the stopover with the required hours and the distance from his/her current location to the destination stored in advance. This device calculates amount of change of the required hours and the distance when the cursor point is set as the stopover for the required hours and the distance from his/her current location to the destination. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a route information guidance device used as, for example, a navigation device, and in particular, a distance and a required time in a route from a current location to a destination and a position indicated by a cursor displayed on a map. This is a technique that can easily compare the distance and required time in the route when using a transit point.

  In recent years, with the spread of automobiles and the development of electronic technology, in-vehicle navigation devices that are installed in vehicles and perform route guidance are rapidly spreading. The route information guidance device calculates and sets the route from the departure point such as the current location to the specified destination based on information such as roads and various facilities, and detects the position of the vehicle by GPS etc. Route guidance is performed by displaying a map or the vehicle position on the screen.

In such a navigation device, the user can generally refer to a desired position other than the current location or destination by scrolling a map displayed on the screen. In this way, the center position of the map on the screen scrolled by the user is indicated by the cursor, and the direction from the position indicated by the cursor (hereinafter referred to as “cursor point”) to the current location or destination. , And the straight line distance and the distance to the present location or destination are useful information. Therefore, a navigation apparatus that displays such information has been proposed (see Patent Document 1).
JP 2006-293750 A

  However, in Patent Document 1, for example, even if the cursor position from the current location and the direction and distance from the cursor location to the destination can be known, for example, a route that goes straight to the destination or a route that includes the cursor location as a transit location. The user could not know the information such as the time difference and the time difference.

  That is, in the prior art, the distance to the destination including the cursor point as a transit point is calculated based on the distance between the displayed current location and the specified cursor point and the distance between the specified cursor point and the destination. Was just displayed on the screen.

  And, in this way, in the state where the distance to the destination including the cursor point as a waypoint is displayed, the distance when going straight from the current location calculated at the beginning to the destination is not displayed on the screen . Therefore, when the user decides whether or not he / she can afford to pass through the route in his / her itinerary, the user compares the direct distance with the distance when passing through the cursor point as the route, I had to judge distance and time.

  However, it is troublesome to memorize the distance when the user goes straight from the current location calculated to the destination to the destination, and the distance and cursor point when the user goes straight from the current location to the destination The difference in the distance to the destination was not accurate. In such a prior art, it was not possible to easily determine whether or not to stop at a transit point.

  The present invention solves the problems of the prior art as described above, and its purpose is to compare information from the current location to the destination and information from the current location to the destination including the cursor point as a transit location. Accordingly, it is an object of the present invention to provide a highly convenient route information guide device, a control method thereof, and a control program that can easily determine whether or not to stop at a transit point.

  In order to achieve the above object, the invention of claim 1 includes a storage means for storing road map data for route search and map display, a destination setting means for setting a destination, and a destination to a destination. First route calculation means for calculating the first route up to, map display means for displaying a map based on the road map data, scroll means for scrolling the map displayed by the map display means, The point specifying means for specifying the point on the map scrolled by the scroll means as the specific point, and when the first route is set, the specific point is set when the specific point is set by the point specifying means. A second route calculating means for calculating a second route from the starting point to the destination via the point, a comparing means for comparing the first route with the second route and calculating a difference; And informing means for informing a serial difference, characterized by comprising a. In addition, this invention can also be grasped | ascertained as the control method and control program of a route information guidance apparatus as described in Claims 8 and 13.

  In the above aspect, when the destination has already been set and the user scrolls the map, the predetermined point displayed on the map of the scroll screen is set as the specific point and the waypoint is reached. The second route from the current location to the destination is calculated by the second route calculation means, and the first route from the current location to the destination calculated in advance is It is possible to calculate the difference of the distance or the required time and notify the user of this. As a result, the user can easily compare the information from the current location to the destination and the information from the current location to the destination including the predetermined point on the scrolled screen as the transit location. It is easy to decide whether or not

  According to a second aspect of the present invention, in the first aspect of the present invention, the scroll means further includes a function of detecting a stop of a scroll instruction by a user, and the point specifying means is configured such that the scroll means has a constant scroll instruction. When a stop over time is detected, a specific point is specified. In addition, this invention can also be grasped | ascertained as the control method and control program of a route information guidance apparatus as described in Claim 9 and Claim 14.

  In the above aspect, it is determined that the stop of the scroll instruction for a certain period of time by the user may be a waypoint candidate, and this stop is used as a condition for the route calculation of the second route, so that the user's wish is satisfied. The comparison result between the first route and the second route can be notified to the user at the determined timing.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the specific point is a position of a cursor displayed on a scrolled map. In addition, this invention can also be grasped | ascertained as the control method and control program of a route information guidance apparatus as described in Claim 10 and Claim 15.

  In the above aspect, a cursor is generally displayed as a movement index at the center position on a scrolled screen. By using the display position of the cursor as a waypoint for route calculation, However, when a route is calculated as a waypoint candidate and a comparison result between the second route and the first route is obtained, it is easy to grasp the point of the waypoint candidate.

  The invention according to claim 4 is the transit point setting for accepting an instruction to use the specific point as a transit point in the invention according to any one of claims 1 to 3, and setting the specific point as a transit point Means are provided. In addition, this invention can also be grasped | ascertained as the control method and control program of a route information guidance apparatus as described in Claim 11 and Claim 16.

  In the above aspect, the determination of the waypoint is made to the user after the screen scrolling is stopped, and after a certain time has elapsed, the notification means accepts the screen display so that the user does not have to perform another operation. It becomes possible to easily set the above specific point as a transit point.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, when the waypoint setting means does not detect a user instruction for a predetermined time with respect to the guidance by the notification means, the specific point is set as a waypoint. It is a thing to do.

  In the above aspect, the waypoint setting unit sets the specific point as a route point when the user's guidance is not detected for a predetermined time after the guidance of the waypoint determination by the notification unit. When the time scroll instruction is not given and the intention is to be set as a stopover point when the point is stopped, the user does not have to operate by deliberately processing the user's intention. This may contribute to user convenience.

  The invention of claim 6 is based on the road map data in the invention of claim 1, storage means for storing road map data for route search and map display, destination setting means for setting a destination, Map display means for displaying a map, scroll means for scrolling the map displayed by the map display means, point specifying means for specifying a point on the map scrolled by the scroll means as a specific point, and the point specifying When a specific point is set by the means, a third route calculating means for calculating a route from the starting point to the destination, which is the destination of the specific point, and a distance, time or fee from the starting point to the destination And an informing means for informing.

  In the above aspect, also in the destination setting process, when the user scrolls the displayed map, the predetermined point of the scroll destination can be set as the destination, and route information guidance with high convenience is possible. An apparatus can be provided.

  According to a seventh aspect of the invention, the scroll means detects a stop of a scroll instruction by a user, and the point specifying means detects the stop when the scroll means detects a stop of the scroll instruction for a predetermined time or longer. A specific point is specified.

  In the above aspect, it is determined that the stop of the scroll instruction for a certain time by the user may be a destination candidate, and this stop is used as a condition for the route calculation of the route to the destination. Information from the current location for the destination can be notified to the user at a suitable timing.

  According to the present invention as described above, by comparing the information from the current location to the destination and the information from the current location to the destination including the cursor point as the transit location, it is easy to make a stop at the transit location. Therefore, it is possible to provide a highly convenient route information guide device, a control method thereof, and a control program.

Next, the best mode for carrying out the present invention will be described with reference to the drawings.
[1. This embodiment]
[1-1. Constitution]
This embodiment describes a route information guidance device (hereinafter referred to as “this device”) for guiding a route to a destination, and can be grasped as its control method and control program. As shown in FIG.

  That is, 1 is an FM multiplex reception and processing unit for acquiring VICS (registered trademark) information and the like, and 2 is a beacon reception and processing unit for acquiring VICS information. Reference numeral 3 denotes a main CPU (central processing unit) that controls the entire system and its peripheral circuits, and is a control unit that performs information processing including control of each part of the apparatus. 4 is a dynamic RAM (DRAM) for loading the main program, 5 is a static RAM (SRAM) with battery backup for holding memory contents such as settings while the main power is off, 6 Is a ROM that is accessed by the control unit 3 at the time of startup or the like.

  Reference numeral 7 denotes a display unit for drawing and displaying information such as a map and a route, and has a display screen such as a liquid crystal display panel. In the present invention, a display having a touch panel function is used as the display unit. Reference numeral 8 denotes a video RAM (VRAM) provided for the display unit 7. Reference numeral 9 denotes a speaker for outputting sound. 10 is a TV reception and processing unit for receiving TV (various television broadcasts), and 11 is a vehicle information acquisition unit that detects operations and states of illumination (lighting of instrument panels, etc.), vehicle speed pulses, and parking. It is.

  12 records road map data (typically, route search data and map display data), other search data, map-related data, etc., using a drive such as an HDD, DVD-ROM, or CD-ROM. This is a map data storage device.

  Reference numeral 13 denotes an input unit that receives input of information and operation, and is a control device that detects input from an operation switch, a touch panel, or the like. In addition to the touch sensor, operation switches and a remote control unit arranged around the display unit 7 may be used alone or in any combination. In the present embodiment, the user can scroll the map screen displayed on the display panel of the display unit 7 through the input unit 13.

  Reference numeral 14 denotes a positioning unit that obtains navigation information related to the behavior of the host vehicle such as the current location, traveling direction, and vehicle speed by a positioning technique (for example, GPS, gyroscope, geomagnetic sensor, acceleration sensor, vehicle speed pulse, etc.). That is, the positioning unit 14 calculates the own vehicle position and the traveling direction of the vehicle from the self-contained navigation using the gyroscope or the vehicle speed pulse and the radio navigation using the GPS or the like. It is an estimate.

  Moreover, the control part 3 implement | achieves and performs the process means (31, 32 ... shown in FIG. 1) corresponding to the following functions and an effect | action by a predetermined control program. Note that the current location detection unit 31, the destination reception determination unit (destination setting unit) 32, the route calculation unit (first route calculation unit and second route calculation unit) 33, the guidance information control unit 38, the display control unit ( Including the notification means in the present invention.) The basic function 39 is not an element peculiar to the present invention but executes a navigation process common to the conventional one. Is omitted.

  When the user inputs an instruction for scrolling the map screen displayed on the display panel of the display unit 7 via the input unit 13, the scroll control unit 34 responds to this input with a map on the screen. It is means for scrolling the screen.

  When the screen scrolling process in the scroll control unit 34 is stopped for a certain period of time, the cursor point specifying unit 35 refers to the coordinates using the position indicated by the map cursor on the screen scrolled by the user as the cursor point. The means for specifying the position as a specific point.

  In addition, the route calculation unit 33 (which also has the functions of “first route calculation unit” and “second route calculation unit”) of the present embodiment is the current location specified by the current location detection unit 31 as described above. Based on the destination information specified by the destination input from the user in the destination reception determination unit 32, a route from the current location to the destination (hereinafter also simply referred to as “first route”) is calculated. In addition, an optimal route (hereinafter simply referred to as “second route”) from the current location to the destination via the transit location, using the location identified by the cursor location identifying unit (location identifying means) 35 as the transit location. (Also called).

  The information comparison unit (comparison means) 36 calculates the required time and required distance of the second route calculated by the route calculation unit 33, and the first route calculated by the route calculation unit 33 and stored in the memory in advance. The required time and required distance are compared, and the change in required time and required distance when the cursor point is set as a transit point for the required time and required distance from the current location to the destination is calculated and displayed on the display unit. 7 means for displaying. Specifically, as shown in FIG. 3 (a), for example, the distance to the destination, the required time, and the cursor point at a position that does not hinder the map display, such as the lower left on the map display screen. In this case, the additional distance and required time, the distance from the current location to the waypoint and the required time are displayed.

  In the present embodiment, the comparison target of the first route and the second route in the information comparison unit 36 is the required time and required distance from the current location to the destination, which indicates an optimal embodiment. In the present invention, for example, when the first and second routes include a road that requires payment of a toll such as an expressway or a general toll road, the toll is also included in the comparison. Furthermore, in the first route and the second route, it is an index for route selection by the user, and all objects that can be compared as differences are included.

  The waypoint determination unit 37 sets the cursor point as a specific point in the cursor point specification unit 35, and the information comparison unit 36 sets the cursor point as a route point for the required time and required distance from the current location to the destination. When the required amount of time and the amount of change in the required distance are displayed on the display unit 7, the user receives an input as to whether or not the cursor point is to be determined as a transit point, or the stop of the scroll movement of the map is predetermined. It is a means for determining the cursor point as a transit point when the time has passed. More specifically, for the cursor point, for example, as shown in the screen example of FIG. 3, whether or not the “decision” button is displayed on the display screen of the display unit 7 and determined as a waypoint. This is notified by a screen display via the display control unit 39 and accepted, and an input by a user pressing or the like is accepted.

  Note that, as described above, the route point determination unit 37 sets the specific point as a route point when it does not detect the input of the route point determination by the user for a predetermined time, but this indicates an optimal embodiment. However, the present invention is not limited to such a case, and includes processing that does not set the cursor point as a route point unless an input of a route point decision by the user is detected.

  The guidance information control unit 38 is a means for guiding various information for executing navigation according to the set route to the user. In addition, the display control unit 39, based on the information output from the guidance information control unit 38, based on the vehicle position, map data, etc., the vehicle position on the surrounding map, the traveling or desired route, the scroll map In this case, the line indicating the cursor point and the current location direction, the amount of change in the required time / distance to the destination when the cursor point is used as a transit point, etc. are displayed on the display unit 7 in a two-dimensional, three-dimensional or other manner. Alternatively, it is a means for controlling the sound output from the speaker 9, and is a means including the function of the notification means in the present invention.

[1-2. Action]
In the route information guidance device according to the present embodiment, the destination reception determination unit 32 receives the input of the destination from the user as usual, and based on the destination information and the current location information obtained from the current location detection unit 31, The route calculation unit 33 calculates the optimum first route from the current location to the destination by a method such as the Dijkstra method, and stores this in the memory group M. The stored first route information is processed as navigation information in the guidance information control unit 38, and the guidance information is provided to the user by the display unit 7 or the speaker 9 via the display control unit 39. In the present embodiment, processing is performed at a stage where such a destination is set and normal navigation processing is performed.

  Hereinafter, processing unique to the present embodiment will be described with reference to the flowchart of FIG. First, when the user inputs an instruction to scroll the map screen displayed on the display panel of the display unit 7 via the input unit 13, the scroll control unit 34 detects this input (YES in S201). The scroll process is executed (S202). Further, the stop of the scroll instruction by the user is detected (S203).

  When the scroll control unit 34 detects a stop of the scroll instruction by the user (YES in S203), the cursor point specifying unit 35 sets the position indicated by the map cursor on the screen scrolled by the user to the cursor. The position coordinate information is referred to as a point, and the position is specified as a specific point (S204). The scroll stop time may be an arbitrary set time, and can be set at a relatively short timing such as 1 second or 0.5 second.

  The route calculation unit 33 executes the calculation of the optimal second route from the current location to the destination via the waypoint based on the information of the cursor point that is the specified specific point in the cursor point specification unit 35. This is stored in the memory group M (S205).

  Subsequently, the information comparison unit 36 reads the second route information calculated by the route calculation unit 33 from the memory group M, and the required time and required distance of the second route are also calculated by the route calculation unit 33. The required time and the required distance in the first route stored in the memory in advance are compared, and the required time and the required distance when the cursor point is set as a waypoint for the required time and the required distance from the current location to the destination. Is calculated (S206).

  The guidance information control unit 38 displays the required time and distance change calculated by the information comparison unit 36 as guidance information on the display unit 7 via the display control unit 39 (S207). Specifically, as shown in the screen example of FIG. 3, the distance to the destination, the required time, the cursor point, etc. In this case, the additional distance and required time, the distance from the current location to the waypoint and the required time are displayed.

  More specifically, the display content of the screen example of FIG. 3 will be described. The display of “13.1 km (30 minutes) to the destination” is 13.1 km, which is the distance from the current location in the first route, It represents the estimated required time of 30 minutes. In addition, the display of “+2.5 km (8 minutes) by adding a transit point” represents 2.5 km, which is an increased distance when a scroll point is added as a transit point, and 8 minutes, which is an increased required time. Is. In other words, when the scroll point is added to the waypoint, the distance from the current location to the final destination is 15.6 km, which is the sum of 13.1 km and 2.5 km, and the total required time is 30 minutes and 8 minutes. The sum is 38 minutes, and the display in the figure shows the amount of change. Furthermore, the display of “4.7 km from the current location” represents 4.7 km, which is a linear distance from the current location to the cursor point. Since this display is processing after route calculation is performed in the route calculation unit 33, in this case, it is also possible to display the distance from the current location to the cursor point.

  Thereafter, the transit point determination unit 37 proceeds to a transit point determination process. That is, as shown in the screen example of FIG. 3, a “decision” button is displayed on the screen displayed on the display unit 7 to inquire whether or not to determine the waypoint through the current cursor point. A question is made as to whether or not the waypoint can be determined (S208).

  When the user inputs through the input unit 13 that the cursor point is determined as a transit point by pressing the “decision” button, the transit point determination unit 37 performs the process of YES in S208. Then, the cursor point is set as a waypoint (S210). At this time, since the second route has already been calculated in S204, there is no need to calculate the optimum route again at this stage, and the information stored in the memory group M is not necessary. Can be used as is, and the processing can be terminated without the need for route calculation (END).

  On the other hand, if no input is obtained from the user, the waypoint determination unit 37 performs a NO process in S208, and the route point determination unit 37 stops scrolling, for example, for 3 seconds. Whether or not to continue is detected (S211), and when it is continued for a predetermined time (YES), the waypoint determination unit 37 sets the cursor point as a waypoint (S210). On the other hand, when the scroll stop does not elapse for a predetermined time (NO), the process returns to S201, and the processes of S201 to S209 are repeated.

[1-3. effect]
According to the present embodiment as described above, when the destination is already set and the user scrolls the map, the cursor point that is the predetermined point displayed on the map of the scroll screen is specified. As a point, the second route from the current location to the destination when assuming the route up to the specific point is calculated by the route calculation means, and from the already calculated current location to the destination The difference between the first route up to and the distance or the required time can be calculated and notified to the user. As a result, the user can easily compare the information from the current location to the destination and the information from the current location to the destination including the cursor point on the scrolled screen as the transit location. It is easy to decide whether or not

  In addition, it is determined that the stop of the scroll instruction for a certain period of time by the user is likely to be a waypoint candidate, and this stop is used as a condition for the route calculation of the second route, so that the timing suitable for the user can be obtained. The user can be notified of the comparison result between the first route and the second route.

  In general, on a scrolled screen, a cursor is displayed at the center position as a movement index. In this embodiment, the display position of the cursor is used as a route calculation target as a transit point. When the user calculates a route as a waypoint candidate and obtains a comparison result between the second route and the first route, it becomes easy to grasp the point of the route point candidate.

  When the user determines the waypoint by the waypoint determination unit 37 for a certain time after the screen scrolling is stopped, the guidance information control unit 38 accepts the screen display, so that the user can scroll without any additional operation. A specific point on the screen can be easily set as a transit point.

  The waypoint determination unit 37 sets the specific point as the route point when it does not detect the input of the route point determination by the user for a predetermined time after guidance of the route point determination by the guidance information control unit 38. In the case where the user does not perform a scrolling instruction for a predetermined period of time and the intention is to be set as a stopover point when the point is stopped, the user intentionally operates by performing a process with a reasonable understanding of the user's intention. This can contribute to user convenience.

[2. Other Embodiments]
The present invention is not limited to the above-described embodiment, and includes, for example, the following aspects. [2-1. Processing when destination is not set]
In the present embodiment, the destination is set in advance, the route calculation unit 33 calculates the optimum first route from the current location to the destination, and the guidance guidance is provided. The present invention is not limited to such a mode, and processing can be performed with the block configuration shown in FIG. 1 even when a destination is not set as shown below.

  The processing flow in this aspect will be described with reference to the flowchart of FIG. First, when the user inputs an instruction to scroll the map screen displayed on the display panel of the display unit 7 via the input unit 13, the scroll control unit 34 detects this input (S401) and scrolls. Processing is executed (S402). Further, stop of the scroll instruction by the user is detected (S403).

  When the scroll control unit 34 detects a stop of the scroll instruction by the user (YES in S403), the cursor point specifying unit 35 sets the position indicated by the map cursor on the screen scrolled by the user to the cursor. The position coordinate information is referred to as a point, and the position is specified (S404). The scroll stop time may be any set time as in the present embodiment, and can be set at a relatively short timing such as 1 second or 0.5 seconds.

  The route calculation unit 33 calculates the optimum route from the current position to the cursor point, that is, the destination based on the information on the specified cursor point in the cursor point specifying unit 35, and stores this in the memory group M. Save (S405).

  The guidance information control unit 38 displays the required time and distance from the current location to the destination calculated by the route calculation unit 33 as guidance information on the display unit 7 via the display control unit 39 (S406). Specifically, as shown in the screen example of FIG. 5, for example, the distance to the destination and the required time are displayed at a position that does not hinder the map display, such as the lower left on the screen displaying the map.

  More specifically, the display contents of the screen example of FIG. 5 will be described. The display “13.1 km (30 minutes) to the destination” is 13.1 km, which is the distance from the current location to the destination, and is the expected requirement. It represents 30 minutes, which is the time. Note that this display is processing after route calculation is performed in the route calculation unit 33. In this case, either the straight line distance from the current location to the cursor point or the distance to the road is displayed. Good.

  Thereafter, the destination reception determination unit 32 proceeds to the destination determination process. That is, as shown in the screen example of FIG. 5, a “decision” button is displayed on the screen displayed on the display unit 7 to inquire whether or not to determine the destination of the current cursor point. Ask whether the destination can be determined (S408).

  When the user inputs through the input unit 13 that the cursor point is determined as the destination by pressing the “decision” button or the like, the destination reception determining unit 32 determines YES in S408. And the cursor point is set as the destination (S409). At this time, since the optimum route from the current location to the destination has already been calculated in S404, it is not necessary to calculate the optimum route again in the route calculation unit 33 at this stage, and the optimum route is stored in the memory group M. The processed information can be used as it is, and the processing can be terminated without the need for route calculation (END).

  On the other hand, when no input is obtained from the user, the destination reception determination unit 32 performs a NO process in S408, and the destination reception determination unit 32 stops the scrolling, for example, for 3 seconds. It is detected whether or not it continues for a predetermined time (S410), and when it continues for a predetermined time (YES), the destination reception determination unit 32 sets the cursor point as the destination (S409). On the other hand, when the scroll stop does not elapse for a predetermined time (NO), the process returns to S401 and the processes of S401 to S409 are repeated.

  In the above aspect, also in the destination setting process, when the user scrolls the displayed map, the predetermined point of the scroll destination can be set as the destination, and route information guidance with high convenience is possible. An apparatus can be provided.

  In addition, it is determined that the stop of the scroll instruction for a certain period of time by the user may be a destination candidate, and this stop is used as a condition for calculating the route of the route to the destination. Thus, information from the current location for the destination can be notified to the user.

[2-2. Other Embodiments]
In the present embodiment, in the screen example shown in FIG. 3, the waypoint information is displayed as “+2.5 km (8 minutes) by waypoint addition”, and the distance from the current location and the change in the required time are displayed. However, in the present invention, the present invention is not limited to such a mode, and the total distance and the total required time in the route from the current location to the destination including the waypoint are displayed, and each change is also displayed together. For example, the information to be displayed can be changed as appropriate for the convenience of the user. For example, as shown in FIG. 6 (a), it is an aspect of "addition of transit point / total distance: 15.6km (+ 2.5km) / required time: 38 minutes (+8 minutes)".

  Further, instead of the required time when the scroll point is added as a transit point, the scheduled arrival time at the destination may be displayed. For example, as shown in FIG. 6 (b), it is an aspect of “addition of transit point / total distance: 15.6 km (+2.5 km) / planned arrival time: 13:38 (+8 minutes)”.

  In the present invention, the waypoint information may be notified by voice in accordance with the screen display already described.

The functional block diagram which shows the structure of embodiment of this invention. The flowchart which shows the process in embodiment of this invention. The figure which shows the example of a display screen of the stopover information in embodiment of this invention. The flowchart which shows the process in other embodiment of this invention. The figure which shows the example of a display screen of the stopover information in other embodiment of this invention. The figure which shows the example of a display screen of the stopover information in other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... FM multiplex reception and processing part 2 ... Beacon reception and processing part 3 ... Control part (Main CPU and its peripheral circuit)
31 ... Current location detection unit 32 ... Destination reception determination unit 33 ... Route calculation unit 34 ... Scroll control unit 35 ... Cursor point identification unit 36 ... Information comparison unit 37 ... Via location determination unit 38 ... Guidance information control unit 39 ... Display control unit 4. Dynamic RAM (DRAM)
5. Static RAM (SRAM)
6 ... ROM
7 ... Display 8 ... Video RAM (VRAM)
DESCRIPTION OF SYMBOLS 9 ... Speaker 10 ... TV reception and processing part 11 ... Vehicle information acquisition part 12 ... Storage device 13 of road map data / search data and map related data ... Input part (touch key control device)
14 ... Positioning part M ... Main memory

Claims (17)

Storage means for storing road map data for route search and map display;
Destination setting means for setting the destination;
A first route calculating means for calculating a first route from the starting point to the destination;
Map display means for displaying a map based on the road map data;
Scroll means for scrolling the map displayed by the map display means;
A point specifying means for specifying a point on the map scrolled by the scroll means as a specific point;
A second route for calculating a second route from a starting point to a destination passing through the specific point when the specific point is set by the point specifying unit when the first route is set; A route calculation means;
A comparing means for comparing the first route with the second route and calculating a difference;
An informing means for informing the difference;
A route information guidance device comprising: The scroll means further has a function of detecting a stop of a scroll instruction by a user,
2. The route information guidance device according to claim 1, wherein the point specifying unit specifies a specific point when the scroll unit detects a stop of the scroll instruction for a predetermined time or more.   3. The route information guidance device according to claim 1, wherein the specific point is a position of a cursor displayed on a scrolled map.   The route according to any one of claims 1 to 3, further comprising a waypoint setting unit that accepts an instruction that the specific point is a route point and sets the specific point as a route point. Information guidance device.   The said waypoint setting means sets the said specific point as a waypoint, when a user's instruction | indication is not detected for the predetermined time with respect to the guidance by the said alerting | reporting means, The said point is set as a waypoint. Route information guidance device. Storage means for storing road map data for route search and map display;
Destination setting means for setting the destination;
Map display means for displaying a map based on the road map data;
Scroll means for scrolling the map displayed by the map display means;
A point specifying means for specifying a point on the map scrolled by the scroll means as a specific point;
When a specific point is set by the point specifying means, a third route calculating means for calculating a route from the starting point to the destination that is the destination of the specific point;
An informing means for informing the distance, time or fee from the departure place to the destination;
A route information guidance device comprising: The scroll means further has a function of detecting a stop of a scroll instruction by a user,
The route information guidance device according to claim 6, wherein the point specifying unit specifies a specific point when the scroll unit detects a stop of the scroll instruction for a predetermined time or more. A control method of a route information guidance device in which a control unit performs guidance of route information using storage means for storing road map data for route search and map display,
The control unit is
Destination setting processing for setting a destination;
A first route calculation process for calculating a first route from the departure point to the destination;
Map display processing for displaying a map based on the road map data;
A scrolling process for scrolling the map displayed by the map display process;
A point specifying process for specifying a point on the map scrolled by the scroll process as a specific point;
A second route for calculating a second route from a starting point to a destination passing through the specific point when the specific point is set by the point specifying process when the first route is set; Route calculation processing,
A comparison process for comparing the first route with the second route and calculating a difference;
A notification process for reporting the difference;
A control method for a route information guide device, characterized in that The scroll process further includes detecting a stop of a scroll instruction by a user;
9. The method of controlling a route information guide device according to claim 8, wherein the point specifying process specifies a specific point when the scroll process detects a stop of the scroll instruction for a predetermined time or longer.   10. The method of controlling a route information guidance device according to claim 8, wherein the specific point is a position of a cursor displayed on a scrolled map.   The said control part receives the instruction | indication to make the said specific point into a waypoint, and performs the waypoint setting process which sets the said specific point as a waypoint, The any one of Claims 8-10 characterized by the above-mentioned. A method for controlling the route information guide device according to claim.   The said waypoint setting process sets the said specific point as a waypoint, when a user's instruction | indication is not detected for the predetermined time with respect to the guidance by the said alerting | reporting process, The said point is set as a route point. Control method of route information guidance device. A control program for a route information guidance device that uses a storage means for storing road map data for route search and map display to cause the control unit to guide route information,
This program is sent to the control unit
Destination setting processing for setting a destination;
A first route calculation process for calculating a first route from the departure point to the destination;
Map display processing for displaying a map based on the road map data;
A scrolling process for scrolling the map displayed by the map display process;
A point specifying process for specifying a point on the map scrolled by the scroll process as a specific point;
A second route for calculating a second route from a starting point to a destination passing through the specific point when the specific point is set by the point specifying process when the first route is set; Route calculation processing,
A comparison process for comparing the first route with the second route and calculating a difference;
A notification process for reporting the difference;
A program for controlling a route information guide device, characterized in that   The route information guidance device control program according to claim 13, wherein the point specifying process includes a process of specifying a specific point when the scroll process detects a stop of the scroll instruction for a predetermined time or more. .   15. The route information guidance device control program according to claim 13, wherein the specific point is a position of a cursor displayed on a scrolled map.   The program according to any one of claims 13 to 15, wherein the program causes the control unit to receive an instruction to set the specific point as a waypoint and to execute a waypoint setting process for setting the specific point as a route point. A control program for a route information guide device according to any one of the preceding claims.   The said waypoint setting process sets the said cursor point as a waypoint, when a user's instruction | indication is not detected for the predetermined time with respect to the guidance by the said alerting | reporting process, The said point of destination is set. Control program for route information guidance device.

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