JP2009250622A - Navigation device, route guiding method, and route guiding program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a user's load for counting the number of signals or the number of roads. <P>SOLUTION: This navigation device determines whether or not a reference spot exists between a guide spot and a spot on the front as long as a first prescribed distance from the guide spot, and outputs a voice message for guiding the guide spot when a moving body arrives at the spot on the front as long as the first prescribed distance, when determined that the reference spot does not exist. When determined that the reference spot exists, it is determined whether the voice message for guiding the guide spot is to be outputted or not when the moving body passes the reference spot based on a distance between the reference spot and the guide spot, speed of the moving body, and a length of the voice message for guiding the guide spot. When determined to be outputted, the voice message for guiding the guide spot is outputted when the moving body passes the reference spot, and when determined not to be outputted, the voice message for guiding the guide spot is not outputted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for guiding a route.

  Current navigation products are provided with a function of searching for a route to a destination arbitrarily designated by a user and performing route guidance according to the obtained guidance route. Normally, when a vehicle reaches a position at a predetermined distance from a guide point such as an intersection existing on the guidance route, the navigation apparatus provides the guide information at the guide point to the user by a navigation image and a voice message. The guide point is, for example, an intersection on a general road or an interchange on a highway, and the guide information at the guide point is information that prompts the vehicle to turn right or left, for example. Patent Document 1 discloses a method of performing guidance on the front side of a guidance point provided on a guidance route by using the number of traffic lights existing up to the guidance point.

  Patent Document 2 discloses a method for performing guidance on the front side of a guidance point provided on a guidance route using the number of roads existing between the guidance point and the current position.

JP-A-10-274544 Japanese Patent Laid-Open No. 2004-53441

  However, in the above guidance method, the user needs to count the number of traffic lights or the number of roads from the time of receiving the guidance, so there is a possibility that the user cannot concentrate on driving. Further, since the vehicle is moving during the guidance, there is a possibility that the traffic signal or road to start counting may be mistaken. In this case, it is conceivable that the position of the guidance point is wrong.

Examples of the problems to be solved by the present invention include those described above. An object of the present invention is to provide a navigation device capable of performing guidance that reduces the burden on the user such as counting the number of traffic lights and the number of roads, and reduces the chance that the user will make a mistake in the guidance point.

  The invention described in claim 1 is a navigation device, and includes a voice guidance means for outputting a voice message for guiding a guide point included in a preset guidance route, a first predetermined point from the guide point and the guide point. It is determined whether or not a reference point exists between a point before the distance, and if the reference point exists, the distance between the reference point and the guide point, the speed of the moving object, and the guide point Determination means for determining whether or not to output a voice message for guiding the guidance point when the moving body passes the reference point based on the length of the voice message for guiding the voice, When it is determined that there is no reference point between the guide point and the point before the first predetermined distance from the guide point, the guide means moves to the point before the first predetermined distance. When a call arrives, a voice message is sent to guide the guidance point, and there is a reference point between the guidance point and the point before the first predetermined distance from the guidance point, and the guidance point is guided. If it is determined that a voice message to be output is output, a voice message that guides the guide point is output when the mobile body passes the reference point, and the first predetermined distance from the guide point to the guide point is output. When it is determined that a reference point exists between the previous point and a voice message for guiding the guidance point is not output, a voice message for guiding the guidance point is not output. .

  The invention according to claim 11 is a route guidance method, wherein a voice guidance step of outputting a voice message for guiding a guidance point included in a preset guidance route, a guidance point and the guidance point from the guidance point It is determined whether or not a reference point exists between a point before a predetermined distance, and if the reference point exists, the distance between the reference point and the guide point, the speed of the moving object, and the guide Determining whether or not to output a voice message for guiding the guidance point when the mobile body passes the reference point based on the length of the voice message for guiding the point; In the voice guidance step, when it is determined that there is no reference point between the guidance point and the point before the first predetermined distance from the guidance point, the point before the first predetermined distance is Move When a call arrives, a voice message is sent to guide the guidance point, and there is a reference point between the guidance point and the point before the first predetermined distance from the guidance point, and the guidance point is guided. If it is determined that a voice message to be output is output, a voice message that guides the guide point is output when the mobile body passes the reference point, and the first predetermined distance from the guide point to the guide point is output. When it is determined that a reference point exists between the previous point and a voice message for guiding the guidance point is not output, a voice message for guiding the guidance point is not output. .

  According to a twelfth aspect of the present invention, the route guidance program executed by the navigation device includes voice guidance means for outputting a voice message for guiding a guidance point included in a preset guidance route, a guidance point, and the guidance point. It is determined whether or not a reference point exists between a point before the first predetermined distance, and if the reference point exists, the distance between the reference point and the guide point, the speed of the moving object And determining means for determining whether or not to output a voice message for guiding the guidance point when the mobile body passes the reference point based on the length of the voice message for guiding the guidance point. The computer is made to function, and the voice guidance means determines that there is no reference point between the guidance point and the point before the first predetermined distance from the guidance point. If the mobile body has reached the point before the first predetermined distance, a voice message for guiding the guide point is output, and the guide point and the guide point are a short distance before the first predetermined distance. If it is determined that there is a reference point between and a voice message for guiding the guidance point is output, the guidance point is provided when the mobile body passes the reference point. When it is determined that a voice message is output, a reference point exists between the guide point and the point before the first predetermined distance from the guide point, and a voice message for guiding the guide point is not output. Does not output a voice message for guiding the guidance point.

  In one aspect of the present invention, the navigation device includes a voice guidance unit that outputs a voice message that guides a guidance point included in a preset guidance route, a guidance point, and a first predetermined distance before the guidance point. It is determined whether or not a reference point exists between the points, and if the reference point exists, the distance between the reference point and the guide point, the speed of the moving body, and the guide point are guided. Determination means for determining whether or not to output a voice message for guiding the guidance point when the moving body passes the reference point based on a length of the voice message, the voice guidance means If it is determined that there is no reference point between the guide point and the point before the first predetermined distance from the guide point, the mobile object reaches the point before the first predetermined distance. A voice message for guiding the guidance point is output, and a reference point exists between the guidance point and the point before the first predetermined distance from the guidance point, and voice for guiding the guidance point When it is determined that a message is to be output, a voice message that guides the guide point is output when the mobile body passes the reference point, and the guide point and the guide point before the first predetermined distance are output. If it is determined that there is a reference point between the point and the voice message for guiding the guidance point is not output, the voice message for guiding the guidance point is not output.

  In the above navigation device, the determination unit is configured to determine whether the mobile object passes the reference point based on the distance between the reference point and the guide point, the speed of the mobile object, and the length of the voice message for guiding the guide point. It is determined whether or not a voice message for guiding the guidance point is output. Then, if it is determined that there is no reference point between the guidance point and the point before the first predetermined distance from the guidance point, the voice guidance means moves to the point before the first predetermined distance. When the mobile body arrives, a voice message for guiding the guidance point is output. When the voice guidance means determines that a reference point exists between the guidance point and the point before the first predetermined distance from the guidance point, and outputs a voice message that guides the guidance point. Outputs a voice message that guides the guidance point when the mobile body passes the reference point. In addition, it is determined that the voice guidance means has a reference point between the guidance point and the point before the first predetermined distance from the guidance point, and does not output a voice message for guiding the guidance point. In this case, a voice message for guiding the guidance point is not output. As described above, the navigation device performs voice guidance at a timing at which the user can recognize “next intersection” when viewed from the current position of the vehicle. As a result, the user only needs to make a turn at the first intersection from the time when the voice guidance is received, so that an extra burden such as counting the number of traffic lights and the number of roads is not required, and mistakes in the guidance point are reduced. In addition, if a voice message such as when reaching a guidance point while outputting a voice message makes it easy for the user to mistake the guidance point, the user may mistake the guidance point without outputting a voice message. Less.

  In another aspect of the above navigation device, the determination unit may include the reference point and the guide point when a reference point exists between the guide point and the point a predetermined distance before the guide point. , The speed of the moving body, and the length of the voice message that guides the guidance point, after the moving body passes the reference point, it reaches the point a second predetermined distance from the guidance point. In the meantime, it is determined whether or not it is possible to complete the output of the voice message for guiding the guidance point. As a result, the guidance point is not reached during the output of the voice message, so that it is less likely that the guidance point is mistaken.

  In another aspect of the above navigation device, when the traffic signal intersection is a guide point, the determination means may be another point between the guide point and the point a short distance from the guide point before the first predetermined distance. A traffic signal intersection is recognized as the reference point.

  In another aspect of the above navigation device, when the traffic signal intersection is a guidance point, the determination means includes a traffic light located between the guidance point and the point before the first predetermined distance from the guidance point. No other intersection is recognized as the reference point.

  The voice message that guides the traffic light intersection includes the word “traffic light” such as “This signal is on the left”, so there is a possibility that the intersection with no traffic light in front will be mistaken for the guidance point. Is low. Therefore, the determination means recognizes that the traffic signal intersection existing between the guidance point and the point in front of the first predetermined distance is the reference point in the guidance of the guidance point with the traffic signal, and the guidance point and the first predetermined point. An intersection without a traffic signal existing between a point in front of the distance is recognized as not a reference point. A traffic signal intersection is an intersection with a traffic signal.

  In another aspect of the above navigation device, when the intersection without a traffic light is a guide point, the determination unit is between the guide point and the point a short distance from the guide point before the first predetermined distance. Another intersection is recognized as the reference point. A voice message for guiding a guide point without a traffic signal is composed of only an instruction of a turning direction such as “It is left”. Even if there is a traffic light intersection between a guidance point without a traffic light and a point before the first predetermined distance from the guidance point, it can be mistaken for a guidance point because it is a guidance only in the direction of turning. There is sex. Therefore, the determination means recognizes all the intersections existing between the guidance point and the point before the first predetermined distance as the reference point in the guidance of the guidance point without a traffic light. In other words, the other intersection here includes both an intersection with a traffic signal and an intersection without a traffic signal.

  In another aspect of the navigation device, the determination unit may determine whether the current position of the moving body does not match the guidance route from a guide point and a point a first predetermined distance before the guide point. The matching point is recognized as the reference point when matched with the guidance route. When the matching between the current position of the vehicle and the guidance route is established within the first predetermined distance from the guidance point, since the voice message for guiding the guidance point cannot be output unless the matching is established, the determination means The point where matching is established is recognized as the reference point.

  In another aspect of the above navigation device, the determination unit recognizes another guide point between the guide point and the point before the first predetermined distance from the guide point as the reference point. When another guidance point exists between the guidance point and the point a first predetermined distance before the guidance point, a voice message that guides the previous guidance point is output unless the previous guidance point is passed. Therefore, the determination unit recognizes the front guide point as a reference point.

  In another aspect of the navigation apparatus, the voice guidance means outputs a voice message including the presence of a traffic signal when guiding a traffic signal intersection. Thereby, the user can distinguish the guidance point with a traffic light from the guidance point without a traffic light, and it is less likely to mistake the guidance point.

  In another aspect of the above navigation device, the voice guidance means has a reference point between the guidance point and the point a predetermined distance before the first guidance point, and guides the guidance point. If it is determined that the voice message to be output is not output, a sound effect shorter than the voice message is output when the mobile body passes the reference point without outputting a voice message for guiding the guide point. It is characterized by that. Thereby, even when the voice message is not output, the user can grasp the guide point by the sound effect.

  In another aspect of the above navigation device, the navigation device further includes display guide means for displaying a guide map for guiding a guide point included in the guidance route, the display guide means regardless of a determination result of the determination means, A guide map for guiding the guide point is displayed. When guidance by voice message is performed as described above, a voice message may not be output. Therefore, guidance by display at the guidance point is always performed so that the user can grasp the traveling direction even when no voice message is output.

  In another aspect of the present invention, a route guidance method executed in a navigation device includes a voice guidance process for outputting a voice message for guiding a guidance point included in a preset guidance route, a guidance point, and the guidance point. It is determined whether or not a reference point exists between a point before the first predetermined distance, and if the reference point exists, the distance between the reference point and the guide point, the speed of the moving object And a step of determining whether or not to output a voice message for guiding the guidance point when the mobile body passes the reference point based on a length of the voice message for guiding the guidance point. And in the voice guidance step, if it is determined that there is no reference point between the guidance point and the point before the first predetermined distance from the guidance point, the first place When the mobile body reaches a point in front of the distance, a voice message that guides the guidance point is output, and a reference point exists between the guidance point and the point in front of the first predetermined distance from the guidance point. When it is determined that a voice message for guiding the guidance point is output, a voice message for guiding the guidance point is output when the mobile body passes the reference point, and the guidance point and the guidance point are output. If it is determined that there is a reference point between the point and the point before the first predetermined distance and that a voice message for guiding the guidance point is not output, a voice message for guiding the guidance point Is not output.

  In another aspect of the present invention, a route guidance program executed by the navigation device includes voice guidance means for outputting a voice message for guiding a guidance point included in a preset guidance route, a guidance point and a guide point from the guidance point. It is determined whether or not a reference point exists between a point before a predetermined distance of 1 and if the reference point exists, the distance between the reference point and the guide point, the speed of the moving object, and The computer as determination means for determining whether or not to output a voice message for guiding the guidance point when the mobile body passes the reference point based on the length of the voice message for guiding the guidance point. The voice guidance means determines that there is no reference point between the guidance point and the point before the first predetermined distance from the guidance point. When the mobile body reaches the point before the first predetermined distance, a voice message for guiding the guide point is output, and the guide point and the guide point are a short distance before the first predetermined distance. If a reference point exists between the reference point and it is determined that a voice message for guiding the guide point is output, a voice for guiding the guide point when the mobile body passes the reference point. A message is output, and it is determined that there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and it is determined not to output a voice message for guiding the guide point Does not output a voice message for guiding the guide point.

  According to the route guidance method and route guidance program described above, it is possible to reduce the burden on the user, such as counting the number of traffic lights and the number of roads, and to perform guidance so that the user is not mistaken for the guidance point. Note that the route guidance program can be suitably handled in a state of being recorded on a recording medium.

[Navigation device]
FIG. 1 shows a configuration of the navigation device 100. In addition, the navigation apparatus 100 shall be mounted in the vehicle as a moving body. As shown in FIG. 1, the navigation device 100 includes a self-supporting positioning device 10, a GPS receiver 18, a system controller 20, a disk drive 31, a data storage unit 36, an interface 37, a communication device 38, a display unit 40, and a voice output unit 50. And an input device 60.

  The autonomous positioning device 10 includes an acceleration sensor 11, an angular velocity sensor 12, and a distance sensor 13. The acceleration sensor 11 is made of, for example, a piezoelectric element, detects vehicle acceleration, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle when the direction of the vehicle is changed, and outputs angular velocity data and relative azimuth data. The distance sensor 13 measures a speed pulse of the vehicle including a pulse signal that is generated as the vehicle wheel rotates.

  The GPS receiver 18 receives radio waves 19 carrying downlink data including positioning data from a plurality of GPS satellites. The positioning data is used to detect the absolute position of the vehicle from latitude and longitude information.

  The system controller 20 includes an interface 21, a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23, and a RAM (Random Access Memory) 24, and controls the entire navigation apparatus 100.

  The interface 21 performs an interface operation with the acceleration sensor 11, the angular velocity sensor 12, the distance sensor 13, and the GPS receiver 18. From these, the vehicle speed pulse, acceleration data, relative bearing data, angular velocity data, GPS positioning data, absolute bearing data, and the like are input to the system controller 20. The CPU 22 controls the entire system controller 20. The ROM 23 includes a nonvolatile memory (not shown) in which a control program for controlling the system controller 20 is stored. The RAM 24 stores various data such as route data preset by the user via the input device 60 so as to be readable, and provides a working area to the CPU 22.

  A system controller 20, a disk drive 31 such as a CD-ROM drive or a DVD-ROM drive, a data storage unit 36, a communication interface 37, a display unit 40, an audio output unit 50, and an input device 60 are connected via a bus line 30. Are connected to each other.

  The disk drive 31 reads and outputs content data such as music data and video data from a disk 33 such as a CD or DVD under the control of the system controller 20. The disk drive 31 may be either a CD-ROM drive or a DVD-ROM drive, or may be a CD and DVD compatible drive. The data storage unit 36 is configured by, for example, an HDD and stores various data used for navigation processing such as map data. The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and acquires information distributed from a VICS (Vehicle Information Communication System) center or the like.

  The display unit 40 displays various display data on a display device such as a display under the control of the system controller 20. Specifically, the system controller 20 reads map data from the data storage unit 36. The display unit 40 displays the map data read from the data storage unit 36 by the system controller 20 on the display screen. The display unit 40 includes a graphic controller 41 that controls the entire display unit 40 based on control data sent from the CPU 22 via the bus line 30 and image information that can be displayed immediately, such as a VRAM (Video RAM). A buffer memory 42 that temporarily stores, a display control unit 43 that controls display of a display 44 such as a liquid crystal display or a CRT (Cathode Ray Tube) based on image data output from the graphic controller 41, and a display 44 are provided. . The display 44 functions as an information display unit, and includes, for example, a liquid crystal display device having a diagonal size of about 5 to 10 inches and is mounted near the front panel in the vehicle.

  The audio output unit 50 performs D / A (Digital to Analog) conversion of audio digital data sent from the CD-ROM drive 31, DVD-ROM 32, RAM 24, or the like via the bus line 30 under the control of the system controller 20. A D / A converter 51 for performing, an amplifier (AMP) 52 for amplifying an audio analog signal output from the D / A converter 51, and a speaker 53 for converting the amplified audio analog signal into sound and outputting the sound into the vehicle. It is prepared for.

  The input device 60 includes keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is disposed around the front panel and the display 44 of the main body of the in-vehicle electronic system mounted in the vehicle. When the display 44 is a touch panel system, the touch panel provided on the display screen of the display 44 also functions as the input device 60.

[Function configuration]
Next, the functional configuration of the navigation device 100 will be described. FIG. 2 shows a functional configuration related to the route guidance processing according to the present invention in the navigation device 100.

  As illustrated, the navigation device 100 includes a storage unit 101, a guide unit 102, and a determination unit 103.

  The storage unit 101 stores map data and voice messages.

  The guide unit 102 outputs a voice message for guiding a guide point included in a guide route that is determined in advance based on map data. Moreover, the guide part 102 outputs sound effects, such as a pawn. Further, the guide unit 102 displays a guide map for guiding the guide points such as a map in which the vicinity of the guide points is enlarged.

  The determination unit 103 determines whether or not a reference point exists between the guide point and the point before the first predetermined distance from the guide point, and between the guide point and the point before the first predetermined distance. If there is a reference point, whether or not to output a voice message for guiding the guide point is determined based on the distance between the reference point and the guide point, the speed of the vehicle, and the length of the voice message. . Here, the reference point is a point to be considered when determining whether or not to output voice guidance. Specifically, as described below, an intersection without a traffic signal, an intersection with a traffic signal (“signal traffic” It is referred to as an “intersection”.), And includes at least one of a point where the current position of the vehicle matches the guidance route and another guide point.

  When it is determined that there is no reference point between the guidance point and the point before the first predetermined distance, the guide unit 120 is configured such that when the vehicle reaches the point before the first predetermined distance from the guidance point, A voice message for guiding the guidance point is output.

  On the other hand, when it is determined that there is a reference point between the guide point and the point before the first predetermined distance, the guide unit 102 operates according to the determination of the determination unit 103. That is, when it is determined that a voice message is to be output, the guide unit 102 does not reach the guide point when the vehicle passes the reference point, not when the vehicle reaches the point a first predetermined distance before the guide point. Output related voice messages. When it is determined not to output a voice message, the guide unit 102 does not output a voice message that guides the guide point. As a result, the user only needs to turn the first guidance point from the time when the voice guidance is received, so that the burden of counting the number is not imposed, and the user is less likely to make a mistake in the guidance point. In addition, if a voice message such as when reaching a guidance point while outputting a voice message makes it easy for the user to mistake the guidance point, the user may mistake the guidance point without outputting a voice message. Less. In this case, the user can grasp the traveling direction by confirming the display of the guide map for guiding the guide point by the guide unit 102.

  The data storage unit 36 in FIG. 1 functions as the storage unit 101, the system controller 20, the display unit 40, and the audio output unit 50 function as the guide unit 102, and the system controller 20 functions as the determination unit 103.

[Route guidance]
Next, route guidance by the navigation device 100 will be described. The route guidance when there is no traffic light at the guidance point will be described with reference to FIGS.

  FIG. 3 is an example of a basic voice message output for a guidance point without a traffic light on the guidance route. As shown in the figure, when it is necessary to turn left at a guidance point A1 without a traffic light, the guide unit 102 guides the guidance point when the vehicle reaches a point C1 that is a first predetermined distance from the guidance point A1. We will guide you with a voice message saying "It's left." In the present embodiment, the first predetermined distance is a distance set to finish outputting the voice message “I am left” at a point 30 m before the guide point A1. That is, the first predetermined distance is a distance obtained by adding a distance B1 to which the vehicle travels while outputting a voice message “I am left” to a preset distance 30 m. The guide unit 102 determines the distance B1 based on the speed of the vehicle and the length of the voice message.

  FIG. 4 is an example of a voice message output when an intersection without a traffic light exists between a guidance point without a traffic light and a point a first predetermined distance before the guidance point. In this example, the “intersection without traffic lights” corresponds to the reference point. As shown in FIGS. 4 (a) to (e), a left turn must be made at the next guide point without a traffic light, and there is no traffic signal between the guide point without a traffic light and a point before the first predetermined distance. If there is a voice message “I am left” when the vehicle arrives at a point in front of the first predetermined distance, there is a possibility that the intersection will be mistaken for the guidance point. Does not output a voice message until it passes the intersection. Based on the distance between the intersection and the guidance point, the speed of the vehicle, and the length of the voice message, the determination unit 103 is a second predetermined distance from the guidance point before the vehicle passes the intersection. It is determined whether or not it is possible to finish outputting the voice message “I am left” until the point is reached. Note that the second predetermined distance is shorter than the first predetermined distance, and in the present embodiment, the second predetermined distance is 5 m.

  As shown in FIG. 4A, when it is possible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance, the determination unit 103 outputs the voice message. The guide unit 102 outputs a voice message “I am left” when the vehicle passes the intersection.

  Next, as shown in FIG. 4B, because the speed of the vehicle is high, it is impossible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance. The determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  Next, as shown in FIG. 4 (c), the distance between the intersection and the guide point is short, but the vehicle is slow, so it is “left until the point before the second predetermined distance is reached. When it is possible to finish outputting the voice message “”, the determination unit 103 determines to output the voice message, and the guide unit 102 outputs the voice message “I am left” when the vehicle passes the intersection. To do.

  Next, as shown in FIG. 4 (d), since the distance between the intersection and the guide point is short, the voice message “I am left” is finished before reaching the point before the second predetermined distance. If it is not possible, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  Next, as shown in FIG. 4 (e), because the distance between the intersection and the guide point is extremely short, even if the speed is low, it is “left” before reaching the point before the second predetermined distance. If the voice message cannot be output, the determination unit 103 determines not to output the voice message, and the guide unit 102 does not output the voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  In any of FIGS. 4A to 4E, the guide unit 102 displays a guide map for guiding the guide points. The timing for displaying this guide map may be any timing. For example, the guide map may be continuously displayed from when the vehicle reaches a point in front of a third predetermined distance (for example, 300 m) from the guide point until it passes through the guide point.

  FIG. 5 is an example of a voice message output when there is a traffic signal intersection between a guidance point without a traffic signal and a point a first predetermined distance before the guidance point. In this example, “traffic light intersection” corresponds to the reference point. As shown in FIGS. 5 (a) to 5 (e), it is necessary to turn left at the next guidance point without traffic lights, and there is a traffic signal intersection between the guidance point without traffic lights and the point before the first predetermined distance. When the vehicle arrives at a point before the first predetermined distance, if the voice message “I am left” is output, the intersection may be mistaken for the guide point. Do not output a voice message until you pass the intersection. And the determination part 103 does not consider the traffic signal of the said intersection, and the vehicle is based on the distance between the said intersection and a guidance point, the speed of a vehicle, and the length of a voice message similarly to the case of FIG. It is determined whether or not it is possible to finish outputting the voice message “I am left” after passing the intersection until reaching the point before the second predetermined distance.

  As shown in FIG. 5A, when it is possible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance, the determination unit 103 outputs the voice message. The guide unit 102 outputs a voice message “I am left” when the vehicle passes the intersection.

  Next, as shown in FIG. 5B, because the speed of the vehicle is high, it is impossible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance. The determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  Next, as shown in FIG. 5C, although the distance between the intersection and the guide point is short, the speed of the vehicle is slow, so the voice message “It is left” by the second point before the second predetermined distance. Can be output, the determination unit 103 determines to output a voice message, and the guide unit 102 outputs a voice message “I am left” when the vehicle passes the intersection.

  Next, as shown in FIG. 5 (d), since the distance between the intersection and the guide point is short, it is not possible to finish outputting the voice message “I am left” before the second predetermined distance. In this case, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  Next, as shown in FIG. 5 (e), since the distance between the intersection and the guide point is extremely short, the voice message “It is left” by the second predetermined distance before the point even if the speed is slow. Cannot be output, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  In any of FIGS. 5A to 5E, the guide unit 102 displays a guide map for guiding a guide point.

  FIG. 6 shows a voice message when the current position of the vehicle is not matched to the guidance route and the guidance route between the guidance point having no traffic light and the point before the first predetermined distance from the guidance point is matched. It is an example of output. In this example, “a point where the current position of the vehicle matches the guidance route (hereinafter referred to as a“ matching point ”) corresponds to the reference point. As shown in FIGS. 6A to 6E, a left turn must be made at the next guide point without a traffic light, and a matching point exists between the guide point without a traffic light and a point before the first predetermined distance. In this case, the guide unit 102 can output a voice message only after matching, that is, after passing through the matching point. Based on the distance between the matching point and the guide point, the speed of the vehicle, and the length of the voice message, the determination unit 103 reaches the point before the second predetermined distance after passing through the matching point. It is determined whether or not it is possible to finish outputting the voice message “It is left.”

  As shown in FIG. 6A, when it is possible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance, the determination unit 103 outputs the voice message. Determination and the guidance part 102 outputs the voice message "It is the left." When passing a matching point.

  Next, as shown in FIG. 6 (b), when the speed of the vehicle is high, it is not possible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance. The determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the matching point.

  Next, as shown in FIG. 6 (c), the distance between the matching point and the guide point is short, but the vehicle is slow, so it is “left until the point before the second predetermined distance is reached. When it is possible to finish outputting the voice message “”, the determination unit 103 determines to output the voice message, and the guide unit 102 outputs the voice message “I am left” when passing the matching point.

  Next, as shown in FIG. 6 (d), since the distance between the point where the matching is established and the guide point is short, the voice message “I am left” is output before the second predetermined distance. When it cannot finish, the determination part 103 determines not to output a voice message, and the guidance part 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the matching point.

  Next, as shown in FIG. 6 (e), since the distance between the matching point and the guide point is extremely short, even if the speed is low, the voice message “is left” by the second predetermined point before the point. Cannot be output, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the matching point.

  In any of FIGS. 6A to 6E, the guide unit 102 displays a guide map for guiding a guide point.

  FIG. 7 is an example of the output of a voice message when another guidance point exists between a guidance point without a traffic light and a point before the first predetermined distance from the guidance point. In this example, “another guide point” corresponds to the reference point. As shown in FIGS. 7A to 7E, when the user has to make a right turn at another guide point in front and to turn left at a guide point without a traffic light, the guide unit 102 guides the front. The voice message of the previous guidance point can only be output after passing through the point. Based on the distance between the previous guide point and the previous guide point, the speed of the vehicle, and the length of the voice message, the determination unit 103 passes through the previous guide point and then It is determined whether or not it is possible to finish outputting the voice message “I am left” before reaching a point before a predetermined distance.

  As shown in FIG. 7A, when it is possible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance, the determination unit 103 outputs the voice message. The guide unit 102 outputs a voice message “I am left” when it passes the front guide point.

  Next, as shown in FIG. 7B, because the speed of the vehicle is high, it is impossible to finish outputting the voice message “I am left” before reaching the point before the second predetermined distance. The determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the front guide point.

  Next, as shown in FIG. 7 (c), the distance between the previous guide point and the previous guide point is short, but the vehicle speed is slow, so that “ When it is possible to finish outputting the voice message “left”, the determination unit 103 determines to output the voice message, and the guidance unit 102 reads “sound left” when passing the front guidance point. Output a message.

  Next, as shown in FIG. 7 (d), since the distance between the previous guide point and the previous guide point is short, a voice message of “It is left” is output before the second predetermined distance point. When it cannot finish, the determination part 103 determines not to output a voice message, and the guidance part 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the front guide point.

  Next, as shown in Fig. 7 (e), because the distance between the previous guide point and the previous guide point is extremely short, even if the speed is slow, it is "left" by the second predetermined distance before the point. When the voice message “” cannot be output, the determination unit 103 determines that the voice message is not output, and the guide unit 102 does not output the voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the front guide point.

  In any of FIGS. 7A to 7E, the guide unit 102 displays a guide map for guiding the guide points.

  Next, route guidance when there is a traffic light at the guidance point will be described with reference to FIGS.

  FIG. 8 is an example of a basic voice message output for a guide point with a traffic light on a guidance route. As shown in the figure, when it is necessary to turn left at a guidance point A2 where there is a traffic light, the guide unit 102 guides the guidance point when the vehicle reaches a point C2 that is a first predetermined distance from the guidance point A2. For the voice message "This signal is on the left." As in the case of FIG. 3, the first predetermined distance is a distance set to finish outputting the voice message “This signal is on the left” at a point 30 m before the guide point A2. That is, the first predetermined distance is a distance obtained by adding a distance B2 traveled by the vehicle to the preset distance 30 m while outputting a voice message “This signal is to the left.” The guide unit 102 determines the distance B2 based on the speed of the vehicle and the length of the voice message.

  FIG. 9 is an example of the output of a voice message when there is an intersection without a traffic light between a guidance point with a traffic light and a point before the first predetermined distance from the guidance point. In this example, the “intersection without traffic lights” does not correspond to the reference point. As shown in FIG. 9A, a left turn must be made at a guidance point with the next traffic light, and there is an intersection without a traffic light between the guidance point with the traffic light and a point before the first predetermined distance. Even if a voice message “This signal is on the left” is output when the vehicle reaches a point in front of the first predetermined distance, the intersection is mistaken for the guidance point because of the word “signal”. Unlikely. Therefore, the guide unit 102 outputs a voice message “This signal is on the left” when the vehicle arrives at a point in front of the first predetermined distance from the guide point without considering the intersection.

  Similarly, when the distance between the intersection and the guide point is extremely short as shown in FIG. 9B, the guide unit 102 does not take the intersection into consideration, and the point before the first predetermined distance from the guide point. A voice message is output when the vehicle arrives between.

  9A and 9B, the guide unit 102 displays a guide map for guiding the guide points.

  FIG. 10 is an example of the output of a voice message when a traffic signal intersection exists between a guidance point where a traffic signal is present and a point before the first predetermined distance from the guidance point. In this example, “traffic light intersection” corresponds to the reference point. As shown in FIGS. 10 (a) to 10 (e), it is necessary to turn left at the next traffic light guidance point, and there is a traffic light intersection between the traffic light guidance point and the point before the first predetermined distance. When the vehicle arrives at a point in front of the first predetermined distance, if the voice message “This signal is left” is output, the intersection may be mistaken for the guide point. 102 does not output a voice message until it passes the intersection. Then, based on the distance between the intersection and the guide point, the speed of the vehicle, and the length of the voice message, the determination unit 103 reaches the point before the second predetermined distance after passing through the intersection. In the meantime, it is determined whether or not the voice message “This signal is on the left” can be output.

  As shown in FIG. 10 (a), when the voice message “This signal is on the left” can be output by the time a point before the second predetermined distance is reached, the determination unit 103 determines that the voice message When the vehicle passes the intersection, the guide unit 102 outputs a voice message “This signal is on the left.”

  Next, as shown in FIG. 10 (b), since the speed of the vehicle is high, the voice message “This signal is on the left” may be output by the time the vehicle reaches the second predetermined distance. If not, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  Next, as shown in FIG. 10 (c), although the distance between the intersection and the guide point is short, the speed of the vehicle is slow. When it is possible to finish outputting the voice message “Left.”, The determination unit 103 determines to output the voice message, and the guide unit 102 determines that “this signal is left when the vehicle passes the intersection. Is output as a voice message.

  Next, as shown in FIG. 10 (d), since the distance between the intersection and the guide point is short, a voice message “This signal is on the left” is reached before reaching the point before the second predetermined distance. Cannot be output, the determination unit 103 determines not to output the voice message, and the guide unit 102 does not output the voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  Next, as shown in FIG. 10 (e), the distance between the intersection and the guide point is extremely short. If it is not possible to finish outputting the voice message “left”, the determination unit 103 determines not to output the voice message, and the guide unit 102 does not output the voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the intersection.

  In any of FIGS. 10A to 10E, the guide unit 102 displays a guide map for guiding the guide points.

  FIG. 11 shows the output of a voice message when the current position of the vehicle is not matched with the guidance route and the guidance route between the guidance point where the traffic light is located and the point before the first predetermined distance from the guidance point is matched. It is an example. In this example, “a point where the current position of the vehicle matches the guidance route (referred to as a“ matching point ”) corresponds to the reference point. As shown in FIGS. 11 (a) to 11 (e), a left turn must be made at the next guide point with a traffic light, and there is a matching point between the guide point with the traffic light and a point before the first predetermined distance. In this case, the guide unit 102 can output a voice message only after matching, that is, after passing through the matching point. Based on the distance between the matching point and the guide point, the speed of the vehicle, and the length of the voice message, the determination unit 103 passes the matching point to a point before the second predetermined distance. It is determined whether or not it is possible to finish outputting the voice message “This signal is on the left.”

  As shown in FIG. 11 (a), when the voice message “This signal is on the left” can be output by the time a point before the second predetermined distance is reached, the determination unit 103 determines that the voice message When the guide unit 102 passes the matching point, it outputs a voice message “This signal is on the left.”

  Next, as shown in FIG. 11 (b), since the speed of the vehicle is high, the voice message “This signal is on the left” has been output before reaching the point in front of the second predetermined distance. If it is not possible, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the matching point.

  Next, as shown in FIG. 11 (c), although the distance between the matching point and the guide point is short, the vehicle speed is slow. When it is possible to finish outputting the voice message “It is left.”, The determination unit 103 determines to output the voice message, and the guidance unit 102 says “This signal is on the left” when passing the matching point. Output a voice message.

  Next, as shown in FIG. 11 (d), since the distance between the matching point and the guide point is short, the voice message “This signal is on the left” is reached before reaching the point before the second predetermined distance. Cannot be output, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the matching point.

  Next, as shown in FIG. 11 (e), the distance between the matching point and the guide point is extremely short. If it is not possible to finish outputting the voice message “left”, the determination unit 103 determines not to output the voice message, and the guide unit 102 does not output the voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the matching point.

  In any of FIGS. 11A to 11E, the guide unit 102 displays a guide map for guiding a guide point.

  FIG. 12 is an example of the output of a voice message when another guidance point exists between a guidance point with a traffic light and a point a first predetermined distance before the guidance point. In this example, “another guide point” corresponds to the reference point. As shown in FIGS. 12 (a) to 12 (e), when it is necessary to make a right turn at another guidance point in front and to make a left turn at a guidance point with a previous traffic light, the guide unit 102 guides the front. The voice message of the previous guidance point can only be output after passing through the point. Based on the distance between the previous guide point and the previous guide point, the speed of the vehicle, and the length of the voice message, the determination unit 103 passes through the previous guide point and then It is determined whether or not it is possible to finish outputting the voice message “This signal is on the left.” Until reaching the point before the predetermined distance.

  As illustrated in FIG. 12A, when the voice message “This signal is on the left” can be output by the time a point before the second predetermined distance is reached, the determination unit 103 determines that the voice message And the guidance unit 102 outputs a voice message “This signal is on the left.” When the guidance unit 102 passes the front guidance point.

  Next, as shown in FIG. 12 (b), since the speed of the vehicle is high, the output of the voice message “This signal is on the left” by the time the vehicle reaches the point before the second predetermined distance is completed. If it is not possible, the determination unit 103 determines not to output a voice message, and the guide unit 102 does not output a voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the front guide point.

  Next, as shown in FIG. 12 (c), the distance between the previous guide point and the previous guide point is short, but the vehicle speed is slow until the point before the second predetermined distance is reached. When it is possible to finish outputting the voice message “This signal is on the left”, the determination unit 103 determines that the voice message is to be output. Outputs the voice message "The signal is on the left."

  Next, as shown in FIG. 12 (d), because the distance between the previous guide point and the previous guide point is short, it is necessary to say “This signal is on the left until the point before the second predetermined distance”. When the voice message “.” Cannot be output, the determination unit 103 determines not to output the voice message, and the guide unit 102 does not output the voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the front guide point.

  Next, as shown in FIG. 12 (e), the distance between the previous guide point and the previous guide point is extremely short, so that the point before the second predetermined distance is reached even if the speed is slow. If the voice message “This signal is on the left” cannot be output, the determination unit 103 determines not to output the voice message, and the guide unit 102 does not output the voice message. In this case, the guide unit 102 may output a sound effect shorter than the voice message when the vehicle passes the front guide point.

[Route guidance processing]
Next, route guidance processing when there is no traffic light at the guidance point will be described. FIG. 13 is a flowchart of route guidance processing when there is no traffic light at the guidance point. This process is realized mainly by the CPU 22 shown in FIG. 1 executing a program prepared in advance.

  First, the guide unit 102 receives designation of a destination by the user (step S1). Then, the guide unit 102 searches for a route from the current position of the vehicle to the set destination and determines a guidance route (step S2). Next, the guide unit 102 acquires information on a guide point next to the current position of the vehicle among a plurality of guide points existing on the guidance route (step S3), and guides the information from the map data in the storage unit 101. A voice message for guiding the point is acquired (step S4). Then, the determination unit 103 determines whether or not there is a reference point between the guide point and a point a first predetermined distance before the guide point (step S5).

  When there is no reference point between the guide point and the point before the first predetermined distance (step S5; No), the determination unit 103 determines whether the vehicle has reached the point before the first predetermined distance. (Step S6). When the vehicle has not reached the point before the first predetermined distance (step S6; No), step S6 is repeated. When the vehicle reaches a point before the first predetermined distance (step S6; Yes), the guide unit 102 outputs a voice message for guiding the guide point from the voice output unit 50 (step S7), and step S11 is performed. Execute.

  On the other hand, when there is a reference point between the guide point and the point before the first predetermined distance (step S5; Yes), the determination unit 103 determines the distance between the reference point and the guide point, the vehicle speed, and the voice. Based on the length of the message, it is determined whether or not a voice message can be output between the time when the vehicle passes the reference point and the point before the second predetermined distance (step S8). If it is determined that it cannot be output (step S8; No), the determination unit 103 determines that a voice message is not output, and the guide unit 102 does not output a voice message and executes step S11. When it determines with being able to output (step S8; Yes), the determination part 103 determines whether the vehicle passed the reference | standard point (step S9). If the vehicle has not passed the reference point (step S9; No), step S9 is repeated. When the vehicle passes the reference point (step S9; Yes), the guide unit 102 outputs a voice message for guiding the guide point from the voice output unit 50 (step S10).

  And the guide part 102 determines whether the vehicle passed the guidance point (step S11). If the vehicle has not passed the guidance point (step S11; No), step S11 is repeated. When the vehicle has passed the guidance point (step S11; Yes), the guidance unit 102 determines whether or not the vehicle has reached the destination (step S12). If the vehicle has not reached the destination (step S11; No), the process returns to step S3, and steps S3 to S11 are repeated for the next guidance point on the guidance route. When the vehicle has reached the destination (step S12; Yes), the route guidance process is terminated.

  Next, route guidance processing when there is a traffic light at the guidance point will be described. FIG. 14 is a flowchart of route guidance processing when there is a traffic light at the guidance point. This process is realized mainly by the CPU 22 shown in FIG. 1 executing a program prepared in advance.

  First, the guide unit 102 receives designation of a destination by the user (step S21). Then, the guide unit 102 searches for a route from the current position of the vehicle to the set destination and determines a guidance route (step S22). Next, the guide unit 102 acquires information on a guide point next to the current position of the vehicle among a plurality of guide points existing on the guidance route (step S23), and guides the map from the map data in the storage unit 101. A voice message for guiding the point is acquired (step S24). Then, the determination unit 103 determines whether or not there is a reference point between the guide point and a point a first predetermined distance before the guide point (step S25).

  When there is no reference point between the guide point and the point before the first predetermined distance (step S25; No), the determination unit 103 determines whether or not the vehicle has reached the point before the first predetermined distance. (Step S26). If the vehicle has not reached the point before the first predetermined distance (step S26; No), step S26 is repeated. When the vehicle reaches a point before the first predetermined distance (step S26; Yes), the guide unit 102 outputs a voice message for guiding the guide point from the voice output unit 50 (step S27), and step S33 is executed. Execute.

  On the other hand, when there is a reference point between the guide point and the point a first predetermined distance before (step S25; Yes), the determination unit 103 determines whether the reference point is an intersection (step S28). When the reference point is an intersection (step S28; Yes), the determination unit 103 determines whether there is a traffic signal at the intersection (step S29). When there is no traffic signal at the intersection (step S29; No), the determination unit 103 executes step S26.

  Next, when the reference point is not an intersection (step S28; No), or when there is a traffic light at the intersection (step S29; Yes), the determination unit 103 determines the distance between the reference point and the guide point, the speed of the vehicle, and Based on the length of the voice message, it is determined whether or not the voice message can be output before the second predetermined distance after the vehicle passes the reference point (step S30). When it is determined that the voice message cannot be output (step S30; No), the determination unit 103 determines that the voice message is not output, and the guide unit 102 does not output the voice message corresponding to the voice message and executes step S33. When it determines with being able to output (step S30; Yes), the determination part 103 determines whether the vehicle passed the reference | standard point (step S31). When the vehicle has not passed the reference point (step S31; No), step S31 is repeated. If the vehicle has passed the reference point (step S31; Yes), the determination unit 103 determines to output a voice message, and the guide unit 102 outputs a voice message for guiding the guide point from the voice output unit 50 (step S32). ).

  And the guidance part 102 determines whether the vehicle passed the guidance point (step S33). When the vehicle has not passed the guidance point (step S33; No), step S33 is repeated. When the vehicle has passed the guidance point (step S33; Yes), the guidance unit 102 determines whether or not the vehicle has reached the destination (step S34). If the vehicle has not reached the destination (step S34; No), the process returns to step S23, and steps S23 to S33 are repeated for the next guide point on the guidance route. If the vehicle has reached the destination (step S34; Yes), the route guidance process is terminated.

  As described above, according to the navigation apparatus of the present embodiment, for example, when the next guidance point is an intersection, it is possible to perform guidance at a timing that can be recognized as the “next intersection” when viewed from the current position of the vehicle. It is. As a result, the user only needs to make a turn at the first intersection from the time of receiving the guidance, so there is no extra burden such as counting the number of traffic lights and the number of roads, and mistakes in the guidance point are reduced. In addition, if a voice message such as when reaching a guidance point while outputting a voice message makes it easy for the user to mistake the guidance point, the user may mistake the guidance point without outputting a voice message. Less.

[Modification]
In the above embodiment, the first predetermined distance is the distance set to finish outputting the voice message at a point 30 m before the guide point. However, the application of the present invention is not limited to this, and the voice message is You may set the point which finishes outputting to the point in front of arbitrary distance of a guidance point. Alternatively, the first predetermined distance may be a fixed value.

  In the above embodiment, the second predetermined distance is 5 m. However, the application of the present invention is not limited to this, and an arbitrary distance from 0 m to the first predetermined distance may be set.

It is a block diagram which shows the structure of a navigation apparatus. It is a functional block diagram which shows the structure relevant to a route guidance process. It is an example of the output of the basic voice message about the guidance point without a traffic signal. It is an example of the output of the voice message when the intersection without a traffic signal exists between the guidance point without a traffic signal and the point before the first predetermined distance. It is an example of the output of the voice message when the traffic signal intersection exists between the guidance point without the traffic signal and the point before the first predetermined distance. It is an example of an output of a voice message when a matching point exists between a guide point without a traffic light and a point before a first predetermined distance. It is an example of the output of a voice message when another guidance point exists between the guidance point without a traffic light and the point before the first predetermined distance. It is an example of the output of the basic voice message about the guidance point with a traffic light. It is an example of the output of the voice message when the intersection without a traffic signal exists between the guidance point with a traffic signal and the point before the first predetermined distance. It is an example of the output of a voice message when a traffic signal intersection exists between a guide point with a traffic signal and a point before a first predetermined distance. It is an example of the output of a voice message when a matching point exists between a guide point with a traffic light and a point before a first predetermined distance. It is an example of the output of a voice message when another guidance point exists between a guidance point with a traffic light and a point before the first predetermined distance. It is a flowchart of the route guidance process when there is no traffic light at the guidance point. It is a flowchart of a route guidance process when there is a traffic light at a guidance point.

Explanation of symbols

10 Independent positioning device 18 GPS receiver 20 System controller 22 CPU
36 Data storage unit 50 Audio output unit 100 Navigation device 101 Storage unit 102 Guide unit 103 Determination unit

Claims (13)

Voice guidance means for outputting a voice message for guiding a guide point included in a preset guidance route;
It is determined whether or not there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and if the reference point exists, the reference point and the guide point are Whether or not to output a voice message that guides the guide point when the mobile body passes the reference point based on the distance of the mobile object, the speed of the mobile object, and the length of the voice message that guides the guide point. Determination means for determining,
The voice guidance means is
When it is determined that there is no reference point between the guide point and the point before the first predetermined distance from the guide point, when the mobile body reaches the point before the first predetermined distance To output a voice message that guides the guide point,
If it is determined that there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and it is determined that a voice message for guiding the guide point is output, the mobile body When passing the reference point, output a voice message to guide the guide point,
If it is determined that there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and it is determined that a voice message for guiding the guide point is not output, the guide point A navigation device characterized by not outputting a voice message for guiding the user.   In the case where a reference point exists between the guide point and a point before the first predetermined distance from the guide point, the determination means determines the distance between the reference point and the guide point, the speed of the moving object, and the guide Based on the length of the voice message for guiding the point, the guide point is guided between the time when the mobile body passes the reference point and the point before the second predetermined distance from the guide point. The navigation apparatus according to claim 1, wherein it is determined whether or not the voice message can be output, and when it is determined that the output can be completed, the voice message is determined to be output.   When the traffic signal intersection is a guidance point, the determination means recognizes another traffic signal intersection between the guidance point and the point before the first predetermined distance from the guidance point as the reference point. The navigation device according to claim 1, wherein the navigation device is characterized by the following.   When the traffic signal intersection is a guidance point, the determination means does not recognize another intersection without a traffic signal between the guidance point and the point before the first predetermined distance from the guidance point as the reference point. The navigation device according to claim 3.   When the intersection without a traffic signal is a guidance point, the determination means recognizes another intersection between the guidance point and a point a short distance from the guidance point before the first predetermined distance as the reference point. The navigation device according to any one of claims 1 to 4, wherein   The determination means, when the current position of the mobile body does not match the guidance route, when matching with the guidance route between a guidance point and a point before the first predetermined distance from the guidance point, The navigation device according to any one of claims 1 to 5, wherein the matching point is recognized as the reference point.   The determination unit recognizes another guide point between the guide point and a point before the first predetermined distance from the guide point as the reference point. The navigation device according to one item.   The navigation apparatus according to any one of claims 1 to 7, wherein the voice guidance means outputs a voice message including the presence of a traffic signal when guiding a traffic signal intersection.   When it is determined that the voice guidance means has a reference point between the guidance point and the point before the first predetermined distance from the guidance point and does not output a voice message for guiding the guidance point 9. A sound effect shorter than the voice message is output when the mobile body passes the reference point without outputting a voice message for guiding the guidance point. The navigation device according to any one of the above. Further comprising display guide means for displaying a guide map for guiding the guide points included in the guide route;
The navigation apparatus according to any one of claims 1 to 9, wherein the display guide unit displays a guide map for guiding the guide point regardless of a determination result of the determination unit. A route guidance method executed by a navigation device,
A voice guidance step for outputting a voice message for guiding a guide point included in a preset guidance route;
It is determined whether or not there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and if the reference point exists, the reference point and the guide point are Whether or not to output a voice message that guides the guide point when the mobile body passes the reference point based on the distance of the mobile object, the speed of the mobile object, and the length of the voice message that guides the guide point. A determination step for determining,
In the voice guidance process,
When it is determined that there is no reference point between the guide point and the point before the first predetermined distance from the guide point, when the mobile body reaches the point before the first predetermined distance To output a voice message that guides the guide point,
If it is determined that there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and it is determined that a voice message for guiding the guide point is output, the mobile body When passing the reference point, output a voice message to guide the guide point,
If it is determined that there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and it is determined that a voice message for guiding the guide point is not output, the guide point A route guidance method characterized by not outputting a voice message for guiding the route. A route guidance program executed in a navigation device including a computer,
Voice guidance means for outputting a voice message for guiding a guide point included in a preset guidance route;
It is determined whether or not there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and if the reference point exists, the reference point and the guide point are Whether or not to output a voice message that guides the guide point when the mobile body passes the reference point based on the distance of the mobile object, the speed of the mobile object, and the length of the voice message that guides the guide point. Functioning the computer as determination means for determining,
The voice guidance means is
When it is determined that there is no reference point between the guide point and the point before the first predetermined distance from the guide point, when the mobile body reaches the point before the first predetermined distance To output a voice message that guides the guide point,
If it is determined that there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and it is determined that a voice message for guiding the guide point is output, the mobile body When passing the reference point, output a voice message to guide the guide point,
If it is determined that there is a reference point between the guide point and the point before the first predetermined distance from the guide point, and it is determined that a voice message for guiding the guide point is not output, the guide point A route guidance program characterized by not outputting a voice message for guiding the user.   A recording medium on which the route guidance program according to claim 12 is recorded.

Images