WO2007102472A1

WO2007102472A1 - Information device and notice control method

Info

Publication number: WO2007102472A1
Application number: PCT/JP2007/054208
Authority: WO
Inventors: Takashi Kawakami; Tokutaro Hirano; Tetsuro Shimamura; Yukihito Nakamura
Original assignee: Pioneer Corporation
Priority date: 2006-03-06
Filing date: 2007-03-05
Publication date: 2007-09-13

Abstract

An information device for performing optimum display for a user at a guidance point in a manner easily understood by the user, where the display is made taking operating days and hours of landmarks into consideration. When a vehicle reaches a guided point, a navigation device compares current date/time and a previously set effective range of days and hours and then determines whether a land mark is suitable for guidance. Then, the navigation device issues a notice of guidance information by using the landmark in the effective range of days and hours.

Description

Specification

Information equipment and notification control method

Technical field

[0001] The present invention relates to a technique for guiding a user to a destination by an information device.

Background art

In recent years, various systems for guiding a user to a destination such as a car navigation device have been developed. In the case of such a system, the point where the route is changed on the route to the destination (hereinafter also referred to as “guidance point”) is indicated by the name of the intersection and the land mark. A landmark is a landmark building such as a gas station or a post office. Specifically, the car navigation system provides voice guidance and display such as “Soon right, B post office is a landmark” at the guidance point.

[0003] However, the conventional car navigation system performs voice guidance and display at a guidance point that does not take into account the regular holiday and business hours of a building that is a landmark. In other words, even when the user travels at midnight, the same voice guidance and display as when traveling in the daytime are performed at the same guidance point. Therefore, if a building that becomes a landmark is not in operation at midnight, etc., there is no lightness, and the landmark mark that is a landmark is difficult for users! It happened!

[0004] In order to solve the above-described problem, a system for determining a landmark to be displayed at a guidance point in consideration of an appropriate time set for each landmark has been proposed (Patent Document). 1).

[0005] In the method of Patent Document 1, taking into account the propriety information of the day of the week such as a regular holiday. Patent Document 1 does not describe how to deal with the case where all the landmarks near the guide point are outside the proper time. For this reason, it is difficult for the method of Patent Document 1 to display landmarks at any date and time, and for users to understand!

[0006] Patent Document 1: JP 2001-165693 A

Disclosure of the invention

Problems to be solved by the invention [0007] Examples of problems to be solved by the present invention include the above. The purpose of the present invention is to provide an optimal display that is easy to understand for the user at the guidance point in consideration of the business date and time of the landmark.

[0008] According to one aspect of the present invention, there is provided an information device having a navigation function for detecting proximity to a pre-set point and notifying at least guidance information, wherein the point is Guidance determining means for determining whether or not it is a guidance point, and detection means for detecting a landmark candidate for facilitating identification of the guidance point when it is determined that the guidance determination means is a guidance point And an effective determination means for determining whether the landmark detected by the detection means as a candidate is within an effective date and time range suitable for guidance by comparing with the current date and time, and the determination of the effective determination means Based on the result, a confirmation means for confirming a landmark within the effective date and time range, and guidance information notification means for notifying guidance information using the landmark determined by the confirmation means are provided.

[0009] The information device is configured as a device that guides a route to a destination by voice or a screen, such as a navigation device. In other words, when the information device comes close to a predetermined point, the information device notifies the guidance information by voice or screen. When the user or vehicle reaches the guidance point, the information device compares the current date and time with a preset effective date and time range to determine whether or not the landmark is suitable for guidance. Here, a landmark is a landmark building such as a gas station or a post office. The valid date and time range is a range of dates and times when the landmark can be used effectively as a guide, for example, based on information such as business hours, regular holidays, and whether it is easy to find at night. is there. The information device then uses the landmarks in the valid date range to notify the guidance information. Therefore, the building used as a guide can be found regardless of whether it is daytime or nighttime and can function as a landmark accurately.

[0010] In one aspect of the information device, when the validity determination unit determines that the landmark detected by the detection unit is not within the valid date and time range, the land detected by the detection unit as a candidate. Out-of-range notification means for displaying and notifying the mark in a display mode different from that in the effective date and time range is further provided. According to this, even if there is no landmark that is in the valid date / time range, Information can be announced using the mark. At this time, it is possible to alert the user that the landmark is difficult to find by changing the display mode of the landmark that is in the valid date range and the landmark that is not in the valid date range.

[0011] In another aspect of the information device, when the validity determination unit determines that the landmark detected by the detection unit as a candidate is not within the valid date range, the detection unit is a candidate. It further comprises out-of-range notification means for adding the sound information indicating that it is not in the effective date and time range to the sound information related to the landmark detected as. As a result, the user can easily distinguish landmarks that are in the valid date range from landmarks that are not in the valid date range by voice guidance.

[0012] In another aspect of the information device, the information device further includes a specifying unit that specifies information specifying a business type of the landmark, and the detecting unit is specified based on information specified by the specifying unit. Prioritize detection of landmarks related to industry. The information processing apparatus further includes a specifying unit that specifies information for specifying the business type of the landmark, and the detection unit detects only a landmark related to the specified business type based on the information specified by the specifying unit. According to this, it is possible to obtain information on landmarks of necessary industries as well as information on the route to the destination.

[0013] In another aspect of the present invention, there is provided a notification control method in an information device having a navigation function for detecting proximity to a pre-set point and notifying at least guidance information, A guidance determination step for determining whether or not the point is a guidance point, and a landmark candidate for facilitating identification of the guidance point when the guidance determination step determines that the point is a guidance point A detection step for detecting the current date and time, an effective determination step for determining whether or not the landmark detected by the detection means as a candidate is within an effective date and time range suitable for guidance, and the validity determination step Based on the determination result, the confirmation process for confirming the landmarks in the effective date and time range, and the guide information for notifying the guide information using the landmarks determined by the confirmation process Has a knowledge process, the.

[0014] Even with this method, a building used as a guide can be found regardless of whether it is day or night. Immediately after that, it is possible to notify the guide information that can accurately function as a landmark. It becomes possible.

[0015] In another aspect of the present invention, there is provided a program executed by a computer having a navigation function for detecting proximity to a pre-set point and notifying at least guidance information, Guidance determining means for determining whether or not the point is a guide point, and detecting landmark candidates for facilitating identification of the guide point when the guide determining unit determines that the point is a guide point By comparing the detection means that detects the landmark detected by the detection means as a candidate with the effective date and time range suitable for guidance by comparing with the current date and time, the determination result of the validity determination means Based on !, confirmation means for confirming landmarks in the effective date and time range, guidance information notification means for notifying guidance information using landmarks determined by the confirmation means, and To make the computer function.

[0016] By executing this program on a computer, the information device can be realized. This program may be stored in a storage medium.

Brief Description of Drawings

FIG. 1 is a block diagram showing a schematic configuration of a navigation device according to an embodiment.

[Figure 2] Shows an example of the map displayed on the display.

[Figure 3] This is an example screen for specifying the destination.

FIG. 4 is a diagram schematically showing the data structure of landmark data.

FIG. 5 is a flowchart of a first notification process according to an embodiment.

FIG. 6 is a diagram for explaining a landmark validity determination method.

FIG. 7 is a flowchart of a second notification process according to a modification.

Explanation of symbols

[0018] 1 Navigation device

10 Independent positioning device

18 GPS receiver

20 System controller

22 CPU

36 Data storage unit 40 display unit

60 input devices

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The following description shows an example in which the present invention is applied to a vehicle navigation apparatus.

[0020] (Navigation device)

FIG. 1 shows the configuration of the navigation device 1. As shown in FIG. 1, the navigation device 1 includes a self-supporting positioning device 10, a GPS receiver 18, a system controller 20, a disk drive 3 1, a data storage unit 36, a communication interface 37, a communication device 38, a display unit 40, An audio output unit 50 and an input device 60 are provided.

The independent 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 the acceleration of the vehicle, and outputs acceleration data. The angular velocity sensor 12 also has, for example, a vibration gyro force, 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 vehicle speed pulse having a pulse signal force that is generated as the vehicle wheel rotates.

[0022] 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 device 1.

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, vehicle speed pulses, 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. RAM24 is used via input device 60 Various data such as route data preset by the user can be stored in a readable manner, or c

Provide a working area for PU22.

[0025] System controller 20, disk drive 31 such as CD-ROM drive or DVD-ROM drive, data storage unit 36, communication interface 37, display unit 40, audio output unit 50 and input device 60 are bus lines 30 They are connected to each other via.

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.

[0027] The data storage unit 36 is configured by, for example, an HDD or the like and stores various data used for navigation processing such as map data and landmark data. Details of the landmark data will be described later.

[0028] The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and is distributed from a VICS (Vehicle Information Communication System) center via the communication interface 37. Receive road traffic information such as traffic jams and traffic information, and other information.

[0029] 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 a display screen such as a display. 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 display memory 43 that temporarily stores data, a display controller 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 is, for example, diagonal 5-10 It is installed near the front panel of the car.

[0030] The audio output unit 50 is a digital to analog (DZA) of audio digital data sent from the CD-ROM drive 31 or DVD-ROM 32 or RAM 24 via the bus line 30 under the control of the system controller 20. A DZA converter 51 that performs conversion, an amplifier (AMP) 52 that amplifies the audio analog signal output from the Ό / 51 converter 51, and a speaker 53 that converts the amplified audio analog signal into audio and outputs it to the vehicle. It is configured with.

[0031] The input device 60 is composed of keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is arranged 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.

[0032] (Guidance to destination)

Next, a method for guiding the route to the destination using the navigation device 1 will be described.

FIG. 2 is an example of a map generated by the navigation device 1 according to the present embodiment and displayed on the display 44. As shown in FIG. 2, this map 70 is composed of a route from the current position 80 to the destination 82, and landmarks 71 to 75 necessary for judging the route.

Note that the CPU 22 reads the map data and landmark data stored in the data storage unit 36, and displays an image of the map 70 on the display 44 via the display control unit 43. Here, information related to road networks is stored in the map data. The landmark data stores information on landmarks, which are buildings that serve as landmarks, such as the power station and post office, which will be described in detail later.

The guidance point where the navigation device 1 notifies the guidance by voice guidance or the map 70 is a point where the course is changed, and is mainly an intersection. That is, when the navigation device 1 recognizes that the vehicle has arrived within a predetermined range from the guidance point, the navigation device 1 notifies the user of guidance regarding the direction of the route by means of voice guidance or the display of the map 70. At this time, As shown, the map 70 displays landmarks as landmarks.

The user first inputs a destination using the input device 60. For example, display the screen shown in Fig. 3 (a) and enter the destination station name and address. As the destination designation method, in addition to the method of inputting the station name and address of the destination, there are a method of displaying a map and pointing with a touch panel, and a method of voice input using a voice recognition means.

[0037] It is assumed that the departure point in the present embodiment is the current position of the vehicle detected by the GPS receiver 18.

[0038] When the input by the user is completed, the system controller 20 of the navigation device 1 obtains a route from the current position to the destination. Specifically, as a result of route calculation, route data from the current position 80 to the destination 82 as indicated by an arrow on the map 70 is calculated. Furthermore, the system controller 20 extracts landmarks along the calculated route from the landmark data.

Here, the landmark data will be described with reference to FIG. Fig. 4 is a diagram schematically showing the data structure of landmark data. As shown in the figure, the landmark data includes a landmark, a name, a business type, a regular holiday, business hours, and position power. The landmark ID is a key for identifying the landmark and is uniquely assigned to each landmark. The name is a detailed designation of the landmark and is sufficient information to determine which landmark is at that location. The type of business is a name that represents the type of landmark, and is sufficient information to roughly check the landmark. The regular holidays and business hours are the regular holidays and business hours of the corresponding landmarks, respectively. The position is position information of the landmark, and is specified by latitude and longitude.

[0040] By referring to the regular holiday and business hours of the landmark data, the system controller 20 confirms whether or not a specific landmark is appropriate to be displayed on the map 70 as soon as it is confirmed by the user. to decide. Specifically, the CPU 22 of the system controller 20 first refers to the landmark data and searches for the landmark along the calculated route based on the position information. Next, the CPU 22 collates the fixed holidays of each landmark based on the current day of the week, and selects only those landmarks that do not fall on a fixed holiday. CPU22 then collates the business hours of the selected landmarks based on the current time and Only the landmarks inside are further selected. In other words, the CPU 22 determines the landmarks to be displayed on the map 70 after selecting in consideration of regular holidays and business hours. This makes it possible to provide route guidance to the destination using only landmarks that are easy to check at the date and time when the vehicle actually passes.

[0041] Actually, for example, in the middle of the night or early morning, banks and post offices are closed, and only a limited number of convenience stores and fast food stores can be used as landmarks. However, at daytime, banks and post offices are also open and can be used as landmarks. On the other hand, at night, neon lights such as restaurants become conspicuous. Thus, what is suitable as a landmark even in the same place varies depending on the time of day. Therefore, as in this embodiment, it is possible to provide easy-to-understand guidance for the user by specifying landmarks to be displayed on the screen in consideration of regular holidays and business hours.

Then, the CPU 22 creates guidance information using the calculated route and the confirmed landmark. Further, the CPU 22 displays a map 70 as shown in FIG. 2 on the display 44 by the display unit 40 based on the created guidance information. In addition, the CPU 22 can refer to the voice guidance data and sequentially perform the route guidance by voice guidance by the voice output unit 50. It is assumed that voice guidance data used in voice guidance (for example, “turn left next 00”) is stored in the data storage unit 36.

[0043] In the present embodiment, the route guidance from the current position of the vehicle detected by the GPS receiver 18 to the destination designated by the user is taken into consideration in consideration of the current date and time. However, the present invention is not limited to this, and a screen as shown in FIG. 3 (b) may be displayed, and the user may specify the departure place and date / time in addition to the destination.

[0044] (First notification process)

Next, the first notification process will be described. FIG. 5 is a flowchart of the first notification process according to this embodiment. The first notification process shown in the figure is periodically performed by the CPU 22 executing a program prepared in advance.

[0045] First, the CPU 22 of the system controller 20 determines whether or not the current position of the vehicle is a guidance point (step Sl l). Specifically, the CPU 22 determines whether the vehicle It is determined whether or not the position is in the vicinity of the guide point on the route. The vicinity of the guide point means that the route changing point force is within a predetermined range, for example. When it is determined that it is not the guide point (step Sl l; No), the CPU 22 repeatedly determines the guide point. On the other hand, if it is determined that the point is a planned point (step Sl; Yes), the CPU 22 refers to the landmark data and determines whether or not there is a landmark around the guidance point (step S12). When it is determined that there is no landmark (step S12; No), the CPU 22 creates guidance information without using the landmark and notifies the guidance (step S16).

On the other hand, if there is a landmark (step S12; Yes), the CPU 22 also extracts landmarks around the guide point as landmark data. Then, the CPU 22 determines whether or not the current date / time power is within the valid date / time range of the extracted landmark (step S13). The effective date and time range is the date and time when the extracted landmark building or store is in operation and is effective as a guide point landmark. Specifically, the CPU 22 determines that the current date / time power landmark falls within the valid date / time range if it is not within the regular holiday and is within business hours. In other words, the CPU 22 determines that the current date / time power landmark is not within the valid date / time range when it is a regular holiday or outside business hours.

[0047] On the other hand, when it is determined that the current date / time is within the valid date / time range of the extracted landmark

(Step S13; Yes), the CPU 22 determines the landmark as a valid landmark used for guidance (Step S15). Then, the CPU 22 creates guide information using the determined landmark and notifies the guide (step S16). Specifically, a map 70 using landmarks is displayed on the display 44 based on the guidance information. Also, the corresponding voice guidance data is extracted and voice guidance is performed.

[0048] When it is determined that there is no landmark whose current date and time is within the valid date and time range (step S13; No), the CPU 22 extracts other landmarks around the guide point from the landmark data. Here, the other landmarks are, for example, landmarks located on the side opposite to the traveling direction. If it is determined that there is another landmark (step S14; Yes), the CPU 22 repeats the processes of steps S13 and S15. On the other hand, when it is determined that there is no other landmark (step S14; No), the CPU 22 creates guidance information that does not use the landmark and notifies the guidance (step S16). This completes the first notification process. [0049] In this embodiment, the valid date and time range is determined based on business hours and regular holidays! /, But the present invention is not limited to this. The effective date and time range may be determined based on the date and time that can be used effectively as a guide based on information such that the store is brighter and easier to find neon at night.

[0050] In this embodiment, the landmarks used for guidance are selected based only on the effective date / time range. However, the present invention is not limited to this and is selected based on the effective date / time range and the type of business. Also good. In this case, as shown in FIG. 6, the CPU 22 determines whether or not the landmark around the guide point is a valid landmark used for guidance based on business hours, regular holidays, and business types. Become. The industry is designated by a predetermined operation by the user. According to this, for example, when a user wants to purchase a drink, a convenience store can be selected and displayed. In other words, since the user can obtain information on the course and also obtain information on the convenience store, the user can obtain the desired information with a simple operation.

[0051] [Modification]

In the above embodiment, landmarks that are determined not to be within the valid date range are not used for guidance. However, the present invention is not limited to this, and even a landmark that is not within the effective date and time range may be used for guidance together with information indicating that. In other words, landmarks outside the valid date and time range may be used for guidance, accompanied by a display indicating that it is closed or outside business hours, and voice guidance.

[0052] The second notification process in such a case will be described in detail. Fig. 7 is a flowchart of the second notification process. The second notification process shown in the figure is periodically performed by the CPU 22 executing a program prepared in advance.

[0053] First, the CPU 22 of the system controller 20 determines whether or not the current position of the vehicle is a guide point (step S21). When it is determined that it is not the guide point (step S21; No), the CPU 22 repeatedly determines the guide point. On the other hand, when it is determined that it is a guide point (step S21; Yes), the CPU 22 refers to the landmark data and determines whether or not there is a landmark around the guide point (step S22). If it is determined that there is no landmark (step S22; No), the CPU 22 creates guidance information that does not use the landmark. And announce the guidance (step S26).

On the other hand, when there is a landmark (step S22; Yes), the CPU 22 also extracts landmarks around the guide point as landmark data. Then, the CPU 22 determines whether or not the current date / time power is within the valid date / time range of the extracted landmark (step S23). Current date / time power When it is determined that the extracted landmark is within the valid date range (step S2 3; Yes), the CPU 22 determines the landmark as a date / time valid landmark within the valid date range (step S24). On the other hand, if it is determined that the current date / time is not within the valid date / time range of the extracted landmark (step S23; No), the CPU 22 holds the landmark as an invalid date / time landmark that is not within the valid date / time range ( Step S2 5). Note that the processing of steps S23 to S25 is performed for all the landmarks extracted around the guidance point.

Then, the CPU 22 determines whether or not there is a landmark having a valid date and time valid (step S26). If it is determined that there is a valid landmark that has been confirmed (Step S26; Yes), the CPU 22 creates guidance information using the valid landmark that has been confirmed, and notifies the guidance based on the guidance information ( Step S27). On the other hand, if it is determined that there is no landmark that is valid for the date and time (step S26; No), the CPU 22 creates guidance information using the landmark that is not valid for the date and time, and provides guidance based on the guidance information. Notice. At this time, in order to indicate that the landmark is a regular holiday or outside business hours, the CPU 22 performs display in a display mode different from the landmark that is valid for the date and time. As different display modes, for example, various modes such as blinking landmarks and graying display colors can be applied. In addition, voice guidance may be used to indicate that the landmark is closed or outside business hours. Specifically, it is also possible to output a voice guidance such as “Turn left at the next post office B. Note that it is outside business hours.”

[0056] In this modified example, when it is determined that there is no valid landmark, the guide information is created using the reserved invalid date and time landmark. It is also possible to create guidance information using both landmarks that are valid for the date and landmarks that are not valid for the date and time. Again, the date and time valid run The display format shall be different so that the user can easily distinguish between landmarks and landmarks with invalid dates.

[0057] As described above, the navigation device 1 according to the present embodiment is a store that is difficult to find at night, such as business hours and regular holidays, or a store where neon is brighter and easier to find at night. Based on such information, the date and time that can be used effectively in the guidance is stored in advance in association with each landmark. For this reason, if a given landmark is closed or difficult to find at the time of guidance, the landmark is not used for voice guidance or map 70. In other words, if there are other candidate landmarks, they also verify the valid date and time range and determine valid landmarks as landmarks. According to this, landmarks used as guidance can be found regardless of day or night, and can function as a landmark immediately. In addition, if there is no landmark that is within the valid date and time range, information indicating that it is outside business hours is added, and a guide using the landmark is announced. Therefore, it is possible to provide the optimum guidance for the user at any place and time.

[0058] Although the present embodiment and the modification have been described assuming a car navigation system for navigating a vehicle, the present invention is not limited to this and is applied to a personal computer or a mobile phone. It is also possible.

Industrial applicability

[0059] The present invention can be used in a navigation apparatus for a moving body represented by a vehicle or the like.

Claims

The scope of the claims

[1] An information device having a navigation function for detecting proximity to a predetermined point and at least notifying guidance information,

Guidance determination means for determining whether or not the point is a guidance point;

Detecting means for detecting landmark candidates for facilitating identification of the guidance point when the guidance determination unit determines that the guidance point is a guidance point;

Validity judging means for judging whether or not the landmark detected by the detecting means as a candidate is within a valid date and time range within the plan by comparing with the current date and time,

A confirmation means for confirming a landmark in the valid date and time range based on a determination result of the validity determination means;

An information device comprising: guide information notifying means for notifying guide information using the landmark determined by the determining means.

[2] When the validity determining unit determines that the landmark detected by the detecting unit as a candidate is not in the effective date and time range, the landmark detected by the detecting unit as a candidate is within the effective date and time range. The information device according to claim 1, further comprising outside notification means for displaying and notifying in a display mode different from a certain case.

[3] When the validity determining unit determines that the landmark detected by the detecting unit as a candidate is not in the valid date and time range, the valid information is included in the audio information regarding the landmark detected by the detecting unit as a candidate. 2. The information device according to claim 1, further comprising an out-of-range notification means for adding voice information indicating that it is not in a date and time range and notifying.

[4] The apparatus further comprises a designation means for designating information for identifying the business type of the landmark,

2. The information device according to claim 1, wherein the detection unit preferentially detects a landmark related to an industry specified based on information specified by the specification unit.

[5] The apparatus further comprises a specifying means for specifying information for identifying the business type of the landmark,

2. The information device according to claim 1, wherein the detection unit detects only a landmark relating to an industry specified based on information specified by the specification unit. vessel.

[6] A notification control method in an information device having a navigation function for detecting proximity to a preset point and at least notifying guidance information,

A guidance determination step for determining whether or not the point is a guidance point; and

A detection step of detecting landmark candidates for facilitating identification of the guidance point when the guidance determination step determines that the point is a guidance point;

A validity determination step of determining whether or not the landmark detected as a candidate by the detection means is a valid date and time range within the plan by comparing with the current date and time;

A confirmation step of confirming a landmark in the effective date and time range based on a determination result of the validity determination step;

A notification information reporting step for notifying guidance information using the landmark determined in the determination step.

[7] A program executed by a computer having a navigation function for detecting proximity to a preset point and notifying at least guidance information, and determining whether the point is a guidance point Guidance determination means,

A confirming means for confirming a landmark in the valid date and time range based on a determination result of the validity determining means;

A program for causing the computer to function as guide information notification means for notifying guide information using a landmark determined by the determination means.

[8] A recording medium on which the program according to claim 7 is recorded.