JPH11153446A - Car-mounted information device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correctly predict a destination and a required time in accordance with driving hysteresis of a driver. SOLUTION: A car-mounted information device detects driving starting and completion by driving starting and completion detection means 6, 10, and accumulates and stores driving starting and completing points, date, and traveling distance as driving hysteresis information in a driving hysteresis storing means 11. In starting driving, a frequency determining means 13 searches the operation hysteresis information in the driving hysteresis storing means 11 based on searching conditions of a current time and a current position detected by a current place detection means 1, and forms required time frequency distribution data to destination frequency distribution data and required time frequency distribution data to a destination of the highest frequency. A destination is predicted by a destination predicting means 14 based on the destination frequency distribution data, a required time to the destination is predicted by a required time predicting means 15 based on the required time frequency distribution data, sound is outputted by a sound outputting means 18, and the destination frequency distribution data and the required time frequency distribution data are displayed in graphs by a display means 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle information device for estimating a destination and a required time at the start of driving based on past driving history information or an action to be performed by a driver ahead of the destination and presenting the estimated information to the driver.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No.
What is described in 271277 is known.
This conventional in-vehicle information device has means for storing the route search information performed in the past in combination of the time zone in which the route search was performed, the departure place, and the destination, and the frequency of occurrence of this set information is determined. This is a device that automatically sets a destination and a route when the navigation device is activated based on the navigation device.

[0003]

However, in such a conventional in-vehicle information device, since the device does not show the grounds for setting such a destination, the device side predicts the driver. If the driver does not agree with the intention of the driver, there is a problem that a driver's distrust of the device occurs.

The present invention has been made in view of such conventional problems, and predicts a driving destination and an action to be taken therefrom based on a past traveling history, and presents it to a driver. It is an object of the present invention to provide an in-vehicle information device that can also present the basis of the information that has been provided.

[0005]

According to a first aspect of the present invention, there is provided an on-vehicle information device, comprising: a driving start / end detecting means for detecting starting and ending of driving; a clock means for detecting a driving date and time of the vehicle; Current position detection means for detecting the operation start point and operation end point, the operation history storage means for accumulating and storing the date and time when these occurred and the travel distance, and when the operation start / end detection means detected the operation start, The operation history information stored in the operation history storage means is searched using the operation start date and time detected by the clock means and the information on the current position detected by the current position detection means as search conditions, and the frequency distribution data for each destination and the Frequency calculating means for generating required time frequency distribution data for frequency destinations, and predicting a driving destination based on the destination-specific frequency distribution data generated by the frequency calculating means Destination prediction means, a required time prediction means for predicting a required time to the destination based on the required time frequency distribution data created by the frequency calculation means, and a destination predicted by the destination prediction means. Voice output means for outputting the name and the required time predicted by the required time prediction means, and the destination destination of the operation and the required time when outputting the required time by voice, the destination-specific frequency distribution data and the required time frequency distribution data And a display means for displaying.

In the vehicle information system according to the first aspect of the invention, the operation start / end is detected by the operation start / end detection means,
The operation start point and the operation end point, the date and time when they occurred, and the traveling distance are accumulated and stored as operation history information in the operation history storage means. When the operation start / end detection means detects the operation start, the frequency calculation means stores the operation start date and time detected by the clock means and the information on the current position detected by the current position detection means in the operation history storage means as search conditions. The operation history information is searched for, and the frequency distribution data for each destination and the required time frequency distribution data for the most frequent destination are created. The destination prediction means predicts a driving destination based on the destination-specific frequency distribution data, and the required time prediction means predicts a required time to the destination based on the required time frequency distribution data, The voice output means outputs the name of the predicted destination and the predicted required time by voice, and the frequency distribution data for each destination is displayed on the display means.
Display required time frequency distribution data.

[0007] With this, simply by the driver getting into the vehicle and performing a driving start operation, the name of the destination and the required time are automatically notified by voice to the driver from the past driving history, and the predicted destination and the predicted destination are predicted. The basis for determining the required time can be presented to the driver by displaying the frequency distribution data.

According to a second aspect of the present invention, in the on-vehicle information device of the first aspect, the display means displays the frequency distribution data for each destination and the required time frequency distribution data in a graph. By displaying the frequency distribution data as a graph, the driver can easily recognize the grounds for determining the predicted destination and the predicted required time.

According to a third aspect of the present invention, there is provided the on-vehicle information device according to the first or second aspect, further comprising response input means for inputting a response from a driver, wherein the voice output means displays a name of a destination of the driving. When a positive response is input by the response input means, the time required to reach the destination is output by voice. The information about the required time can be notified only when the prediction matches the destination intended by the user.

According to a fourth aspect of the present invention, in the in-vehicle information device according to the first to third aspects, the operation start / end detecting means detects the occurrence of the insertion / removal of the ignition key and the time from when the ignition key is inserted until the ignition key is removed. This is to determine the start or end of driving based on either the time from when the key is removed until the key is removed, or the travel distance from when the ignition key is removed until the key is removed. It is possible to prevent a useless prediction operation from being performed for a distance movement.

According to a fifth aspect of the present invention, in the in-vehicle information device according to the first to fourth aspects, the operation date and time detected by the clock means, the operation history information stored in the operation history storage means, and the search executed by the frequency calculation means. The condition includes the day of the week information together with the date and time information, whereby the destination can be predicted by reflecting the driving history characteristics of the driver for each day of the week.

According to a sixth aspect of the present invention, in the on-vehicle information device of the first to fifth aspects, the operation date and time detected by the clock means, the operation history information stored in the operation history storage means, and the search executed by the frequency calculation means. Closed with the date and time information in the conditions
This includes holiday information, whereby a destination prediction that reflects different driving history characteristics between weekdays and holidays and holidays can be made.

According to a seventh aspect of the present invention, in the on-vehicle information device according to any one of the first to sixth aspects, further, there is provided a driver specifying means for specifying a driver, wherein the frequency calculating means specifies the driver specified by the driver specifying means. The destination and the required time of the driving are predicted in accordance with the driving conditions, and the destination can be predicted in accordance with the driving history characteristics of each driver.

[0014]

According to the first aspect of the present invention, simply by the driver getting in the vehicle and performing a driving start operation, the name of the destination and the required time from the past driving history are automatically spoken to the driver. Notifying the driver and the basis for determining the predicted destination and the predicted required time can be presented to the driver by displaying the frequency distribution data. Therefore, when the vehicle is used on a daily basis, a conventional navigation device is used. The vehicle will give driving advice to the driver based on the past driving history without operating the vehicle, so that the driver can give advice that is realistic and, in addition to the presentation of the predicted destination, the prediction Since the basis is also presented, even if the prediction is incorrect, the driver will not be distrusted.

According to the second aspect of the present invention, since the display means displays the frequency distribution data for each destination and the required time frequency distribution data in a graph, the predicted destination and the predicted required time are determined for the driver. The basis can be easily recognized.

According to the third aspect of the invention, when the start of driving is detected and the destination prediction calculation is performed, information on the required time is notified only when the prediction matches the destination intended by the driver. be able to.

According to the fourth aspect of the present invention, it is possible to prevent the useless prediction calculation for a short distance movement that does not require the destination prediction calculation.

According to the fifth aspect of the present invention, it is possible to predict a destination reflecting the driving history characteristics of each day of the week of the driver.

According to the invention of claim 6, it is possible to predict a destination reflecting different driving history characteristics between weekdays and holidays and holidays.

According to the present invention, the destination can be predicted according to the driving history characteristics of each driver.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a system configuration of an in-vehicle information device according to one embodiment of the present invention. The in-vehicle information device includes a GPS signal receiving unit 1 for receiving a GPS signal for specifying a vehicle position, date and time, month, day, and day of the week, a navigation control unit 2 for performing various controls of the navigation device,
A map database 3 and a facility information database 4 used as a database of a navigation device, an information display unit 5 such as a CRT or a liquid crystal monitor for displaying maps and information, and the state of an ignition key are detected to determine the start of driving. A driving start detecting unit 6, a driving distance calculating unit 7 for calculating a driving distance of a vehicle, a driver specifying unit 8 for specifying a driver from information such as an IC card, a driving date and time, a driving start point, an end point, a required time, The vehicle includes a running history temporary storage unit 9 for temporarily storing running history data including a running distance, and an operation end detecting unit 10 for detecting the end of driving based on the state of the ignition key, the running distance, and the passage of time.

The in-vehicle information device further includes a travel history database 11 for storing a set of determined travel histories, a search condition determining unit 12 for performing history search according to date and time, day of the week, and the like, and a search result based on the search conditions. Frequency calculation unit 1 for calculating the frequency distribution of the driving destination point and the driving time required from the
3. A destination prediction unit 14 for predicting a destination based on frequency distribution data, a required time prediction unit 15 for predicting a required time to the destination, and a message generation for generating a message about the destination and the required time to the destination A voice synthesizer 17 for converting the generated message into a voice signal; and a voice output unit 18 for outputting the converted voice signal.

The on-vehicle apparatus further includes a point list presenting section 19 for giving a name to a point visited for the first time or a point which has not been registered in the history, and responding to the output message or the presented list. To do
An information input unit 20 including an input device such as a touch panel, a remote control, a mechanical switch, or a voice input device; and a destination input unit for inputting a new destination when the device goes to a place different from the predicted destination. 2
1 is provided.

Next, the operation of the on-vehicle information device according to the embodiment having the above configuration will be described. First, the outline of the operation of this embodiment will be described. Past driving history data, such as the date and time of driving, the driving start point, the destination point, the required time, and the driving distance, are accumulated and stored in the driving history database 11, and at the time of starting driving, the past time is determined according to the current position, the current date and time, and the day of the week. The destination is predicted by frequency analysis with reference to the travel history database 11, the result is transmitted from the voice output unit 18 as a voice to the driver, and the frequency distribution data used as the basis of the prediction is displayed as a graph on a screen. Furthermore, if the driver responds affirmatively to the call for the destination from the vehicle-mounted device, the time required to reach the destination is predicted by frequency analysis, and this is output as a sound, and at the same time, the frequency distribution based on the prediction is made. Display the data as a graph on the screen.

Hereinafter, the operation of the on-vehicle information device according to the above-described embodiment will be further described with reference to FIGS. The driving history database 11 includes driving history data 31 such as the date and time of driving, a driving start point, a destination point, a required time, and a driving distance shown in FIG. 2, and a driving history data shown in FIG. Latitude and longitude and registered point data 32 of a label assigned to the latitude and longitude are accumulated and stored.

As shown in the flowcharts of FIGS. 5 to 7, an IC in which a driver gets on the vehicle and personal attributes are written.
When the card is inserted, the driver is specified by the driver specifying unit 8 (step S1). When the ignition key is further inserted, the driving start is detected by the driving start detecting unit 6 and a trigger signal is given to the navigation control unit 2 (step S1). Step S2). It should be noted that a condition that “a certain period of time has elapsed” after the ignition key is first removed can be set as the criterion for determining the start of operation.

When the navigation control unit 2 receives the trigger signal from the driving start detection unit 6, the navigation control unit 2 receives the vehicle position information (latitude and longitude information; driving start point information) from the GPS signal reception unit 1 and the current time. The date and time and day of the week information are fetched and temporarily stored in the running history temporary storage unit 9. This information serves as a material to be registered in the travel history database 11, and is held until the operation end is determined (step S3).

The traveling history temporary storage section 9 compares the latitude and longitude information of the registered driving start point with the point information of the past traveling history database 11 and labels the departure point. This labeling process is performed by using the registration point data 32 shown in FIG.
, The latitude and longitude information (numerical data) of the driving start point is replaced with facility name information such as "home" and "company" (steps S4 and S5).

If the location information registered in the past cannot be found, a label representing the current location is presented from the location list presenting section 19 to urge the driver to register (step S).
4, S6, S7). In this process, the message generator 1
6, the message registered in the voice synthesizing unit 1 is designated.
7 synthesizes the contents of the message by voice, and outputs the voice
For example, a message "Where is this place?" Is uttered, and at the same time, as shown in FIG. 4, a label list 33 prepared in advance is displayed on the information display section 5, and the driver is notified of the information. A corresponding label is selected from the input unit 20. Since there is a possibility that the driver does not have an input intention, if there is no information input for a certain period of time, it is determined that a timeout has occurred, and this mode is exited (step S8).

When the labeling of the operation start point is completed,
Based on the acquired information at the time of starting the operation, the content of the past travel history database 11 is searched (step S).
9, S10).

The search condition at this time is determined by the search condition determining unit 1
2 creates. For example, a "time condition" that the departure time is close to the current time and a "driving start point condition" that the label of the departure point is equal are created, and the traveling history data of the past traveling history database 11 is created based on these conditions. 31 is searched. In addition, as a search condition, if the date and time when the driving was started is Sunday, a "day of the week condition" that data of only the past Sunday is searched, and information of the past 20 days from the date of starting driving is searched for There is also a "date condition". These search conditions are listed in the search condition determination unit 12, and appropriate search conditions are extracted from the attributes of the current date, time, and day of the week.

Here, from the information on the current date and time, the day of the week, and the location, "time condition": driving started at the current time ± 30 minutes, "driving start point condition": driving started near the current position, "Day of the week condition": The current date and time, if the day of the week is a weekday, only weekdays, holidays, if it is a holiday, holidays, only holidays. "Date condition": The past 20 days, and data are searched by the logical product of four conditions Is set as the default search condition.

Since weekdays, holidays, and holidays may vary from person to person, for example, it may be configured to be registered in an IC card and read from the driver identification unit 8 as holiday information. The search condition may be set as a default search condition, or a new search condition may be generated from attributes of the current date and time, day of the week, and location.
For example, if the day when you started driving is "five or ten days",
If you search only the past "Five days", or if the day you started driving is "Higanshi", you can search only the past "Higanshi", by setting these new search conditions In addition, it is possible to extract information that will be buried in the information search on successive dates.

With respect to the data extracted by the above-described search processing, the frequency calculation unit 13 generates frequency distribution data as shown in FIG.
A frequency distribution diagram 41 for each destination label shown in FIG. 9 and a frequency distribution diagram 42 for the required time for each destination shown in FIG. 9 are created (step S11). On the other hand, the destination prediction unit 14
Identifies the most frequent driving destination (step S1).
2) When the most frequent driving destination is further identified, the required time predicting unit 15 determines the most frequent required time with reference to the frequency distribution of the required time to the destination, and estimates the required required time. (Step S13).

Subsequently, the message generator 16 generates a message (speech data) for outputting the specified destination name by voice (step S14). here,
For example, "It's a company.""It's a department store."
Is generated. To generate the calling sentence, the phrase data such as "Is it up to" or "Is it up to" prepared in advance in the message generator 16 and the destination label determined by the destination predictor 14 are used. By combining

The generated message is sent to the voice synthesizing unit 17, where the voice data is generated by using a voice synthesizing device that converts the text data into a voice signal, and is output from the voice output unit 18 as a voice. Step S15).

Along with the utterance of the destination name, the frequency calculating unit 1
3 displays the destination-specific frequency distribution diagram 41 shown in FIG. 8 created in step S11 on the information display unit 5 (step S1).
6). In the destination frequency distribution diagram 41 displayed on the information display section 5, the color of the most frequent portion is changed and displayed so that it can be clearly distinguished from the others. However, a blinking display can be used instead. Then, the display of the destination-specific frequency distribution chart 41 is deleted after a predetermined time, for example, 5 seconds elapses.

When a message relating to the predicted destination is uttered from the voice output unit 18 of the vehicle-mounted information device, the driver uses the information input unit 20 to input a reply thereto. This includes “YES” displayed on the information display unit 5,
The display of “NO” may be selected and confirmed by a remote control switch, or a touch panel may be provided on the information display unit 5 and input may be performed by touching the display buttons of “YES” and “NO”. In addition, by preparing a voice recognition device as the information input unit 20, by recognizing the voice of "Yes" and "No" uttered by the driver,
Alternatively, the input may be made by operating a mechanical switch installed near the driver's seat.

If the answer is YES, step S1
The required time to the destination predicted in step 3 is output via the message generator 16, the voice synthesizer 17, and the voice output unit 18. At this time, for example, a message “It takes 40 minutes to reach the destination” is uttered (steps S17 and S18).

Along with the utterance of the estimated required time to the destination, the frequency distribution diagram 42 of the required time to the most frequent destination shown in FIG. 9 created in step S11 is displayed on the information display section 5 (step S19). This required time frequency distribution chart 4
Similarly to the display of the destination-specific frequency distribution diagram 41, the display of item 2 is performed by changing the color of the most frequent portion so that it can be clearly distinguished from the others, or by blinking the color. Make it easy for the driver to see at a glance. The display of the required time frequency distribution diagram 42 is deleted after a predetermined time, for example, 5 seconds elapses.

If the driver does not reply for a certain period of time or longer, it is determined that there is no intention to input the destination, the process is terminated, and the process proceeds to step S25 (steps S17 and S25).
20, S21).

If the answer of the driver is NO (step S20), a message prompting the input of a new destination is output from the voice output unit 18 (step S2).
2). For example, a message such as "Please enter a destination because route guidance is provided" can be output.

When the driver inputs a request for inputting a destination using the destination input unit 21, the information is stored in the driving history temporary storage unit 9, such as a driving start point, a date and time, a driving start point such as a day of the week, and time information. And is temporarily stored as the material of the traveling history data at the time of the later driving end (step S23). The input of the destination is performed by searching the destination input unit 21 on the map for the destination in the same manner as in the conventional navigation system. If there is no input of the destination even after the lapse of the fixed time, the process proceeds to the next processing step S25 with a timeout (step S24).

With the above processing, input of the driving start point, start date and time, day of the week, etc., the prediction of the destination and the prediction of the required time,
When the input of the new destination is completed, the operation is started toward the destination. Whether the vehicle has arrived at the destination is determined based on whether the ignition key has been removed, and it is determined that the vehicle is traveling toward the destination until the ignition key is removed (step S25).

When the vehicle arrives at the destination and the ignition key is removed, the operation ending unit 10 determines the end of the operation. For example, when the ignition key is removed (step S25), the time T1 when the operation is determined to be started and the current time T1 are determined.
2 and the condition is that a certain time has elapsed, and that the running distance during that time is not less than a certain distance (steps S26 and S27). For example, a case where the time T1 determined to start driving and the current time T2 are extremely short (for example, three minutes), or a case where the travel distance from when the ignition key is inserted to when the ignition key is removed is extremely short (for example, 500 m). In this case, it is determined that the vehicle is not driving, and the driving start data temporarily stored in the traveling history temporary storage unit 9 is deleted (step S28).

The operation end detecting section 10 determines in step S2
If it is determined that the destination has arrived through the determination of steps S5 to S27,
The mileage calculating unit 7 receives the position information (latitude and longitude) of the vehicle at that time from the navigation control unit 2 and information on the date and time at that time and the day of the week, and calculates the required time from the start of driving and the mileage. Then, the position information and the time information at the time of completion of the driving, and the information of the required time and the traveling distance are stored in the traveling history temporary storage unit 9 (step S29).

The position information (latitude, longitude) of the driving end point stored in the driving history temporary storage 9 is compared with the data of the driving history database 11 and the past registration point data 3 is stored.
The operation end point is labeled with reference to Step 2 (Steps S30 and S31). This process is unnecessary if a label has already been assigned.

On the other hand, when the driving is completed at a point which has never been seen in the past, the point list presenting section 19 presents a label list representing the current position, thereby selecting and registering it (steps S30 and S32). , S33). That is, the label list 33 shown in FIG. 4 is displayed on the information display unit 5, and the destination input unit 21 performs a selection and confirmation operation.
Thereafter, the values of latitude and longitude are close to each other (for example, radius 50
m), the same label is assigned. As a result, even when there is no input during the destination input process (when a timeout occurs in steps S21 and S24), the operation end point can be registered at this stage.

If there is no label selection input within a certain period of time, it is determined that there is no intention to register, and the routine goes to the next step S35 (step S34).

The acquisition of the history data of one drive is completed by the above series of processing. Thereafter, the series of data acquired at the start and end of the operation is transferred from the traveling history temporary storage unit 9 to the traveling history database 11, and It is registered as the travel history data 31 shown in FIG. 2, and the history is updated (step S35).

The contents and frequency distribution diagrams 41 and 42 of the running history database 11 accumulated and stored in this manner are shown.
Can be browsed by the driver at an arbitrary timing, and if it becomes necessary to browse, the information input unit 20
From the travel history database 11
41 and 42 are displayed on the information display unit 5.

As described above, in the above-mentioned on-vehicle information device, the prediction of the driving destination and the required driving time are performed with reference to the database in which the past driving history is accumulated and stored, and the prediction result is transmitted to the driver. With the configuration, it is possible to predict the actual destination and the required time, it is possible to present more accurate information to the driver, and the device predicts the destination accurately. The trouble of operating the navigation device such as setting is reduced. In addition, the more a vehicle is used to use the database of the cumulative storage type, the more the driver can make a call that matches the behavior pattern of the driver,
The destination can be presented more accurately.

Further, by referring to a database in which past driving histories are accumulated and stored, prediction of a driving destination point and prediction of a required driving time are performed, and the prediction result is communicated to the driver by voice, and the frequency used as the basis of the prediction. The distribution data is displayed as a graph on the screen, so drivers can easily understand why such destination prediction and required time prediction were performed, and the persuasiveness of calling for destination prediction at the start of driving Is improved. Further, even when the destination intended by the driver is different from the destination predicted by the device side, the grounds predicted by the device side are displayed, and the reason of the driver input device is understood, so that the device can be understood. The driver no longer has a distrust of the driver.

In addition to this, it is determined whether or not the vehicle has been driven based on the time from when the ignition key is inserted to when the ignition key is removed or the running distance, and the operation is started based on the lapse of time from when the key is removed to when the ignition key is next inserted. Detection,
Thus, it is possible to determine the actual start of driving and traveling.

In the above-described embodiment, when a positive response is input to the utterance of the predicted destination, the predicted required time is uttered. The predicted required time may be uttered at a time, and the frequency distribution diagram 41 for each destination and the required time frequency distribution diagram 42 for the most frequent destination may be displayed simultaneously.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of travel history data of a travel history database in the embodiment.

FIG. 3 is an explanatory diagram of registered point data in a travel history database according to the embodiment.

FIG. 4 is an explanatory diagram showing a point registration support screen in the embodiment.

FIG. 5 is a flowchart (1) of a destination prediction process according to the embodiment.

FIG. 6 is a flowchart (2) of a destination prediction process according to the embodiment.

FIG. 7 is a flowchart (3) of a destination prediction process according to the embodiment.

FIG. 8 is a frequency distribution diagram for each destination in the embodiment.

FIG. 9 is a time frequency distribution chart for a driver's office in the above embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 GPS signal receiving part 2 Navigation control part 3 Map database 4 Facility information database 5 Information display part 6 Driving start detection part 7 Driving distance calculation part 8 Driver identification part 9 Driving history temporary storage part 10 Driving end detection part 11 Driving history database 12 search condition determination unit 13 frequency calculation unit 14 destination prediction unit 15 required time prediction unit 16 message generation unit 17 voice synthesis unit 18 voice output unit 19 point list presentation unit 20 information input unit 21 destination input unit

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Norimishi Kishi 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Prefecture Nissan Motor Co., Ltd.

Claims (7)

[Claims] 1. Start / end detection means for detecting start / end of operation, clock means for detecting date and time of operation of a vehicle, current position detection means for detecting current position of a vehicle, operation start point and operation end point An operation history storage means for accumulating and storing the date and time of occurrence and a running distance; and an operation start date and time detected by the clock means and a detection of the current position detection means when the operation start / end detection means detects the operation start. The frequency calculation for generating the destination-specific frequency distribution data and the required time frequency distribution data for the most frequent destination by searching the driving history information stored in the driving history storage unit using the information on the current position to be performed as a search condition. Means, destination prediction means for predicting a driving destination based on the destination-specific frequency distribution data created by the frequency calculation means, and creation of the frequency calculation means Required time prediction means for predicting the required time to the destination based on the required time frequency distribution data, the name of the destination predicted by the destination prediction means and the required time predicted by the required time prediction means And a display means for displaying the destination frequency distribution data and the required time frequency distribution data when the driving destination and the required time are output as voice. . 2. The in-vehicle information device according to claim 1, wherein the display unit displays the destination frequency distribution data and the required time frequency distribution data in the form of a frequency distribution graph. 3. A response input means for inputting a response from a driver, wherein the voice output means voice-outputs a name of the destination of the driving, and a positive response input is received by the response input means. 3. The in-vehicle information device according to claim 1, wherein the time required to reach the destination is output as a voice. 4. The operation start / end detection means detects the occurrence of insertion / removal of an ignition key, the time from when the ignition key is inserted to when it is removed, the time from when the ignition key is removed to when it is inserted, and the ignition key. The start and end of driving are determined based on any of the travel distances until the vehicle is pulled out of the vehicle.
4. The in-vehicle information device according to 3. 5. The driving date and time detected by the clock means, the driving history information stored by the driving history storage means, and the search condition executed by the frequency calculating means include day of the week information together with the date and time information. An in-vehicle information device according to any one of claims 1 to 4. 6. The operation date and time detected by the clock means, the operation history information stored in the operation history storage means, and the search condition executed by the frequency calculation means include the date and time information as well as
The in-vehicle information device according to any one of claims 1 to 5, further comprising holiday information. 7. A driver specifying means for specifying a driver, wherein the frequency calculating means predicts a driving destination and a required time according to the driver specified by the driver specifying means. The in-vehicle information device according to claim 1.