JP3531445B2 - In-vehicle information devices - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle information device which estimates a destination and a required time, or a behavior of a driver ahead of the destination and a required time based on past driving history information at the start of driving and presents the estimated result to the driver.

[0002]

2. Description of the Related Art Conventionally, as an on-vehicle information device, Japanese Patent Laid-Open No. 8-
The one described in Japanese Patent No. 271277 is known.
This conventional on-vehicle information device has means for storing the route search information performed in the past as a set with the combination of the time zone, the place of departure and the destination for which the route search was performed. It is a device for automatically setting a destination and a route when the navigation device is started based on the navigation device.

[0003]

However, in such a conventional vehicle-mounted information device, since the device does not provide a rationale as to why the device has set such a destination, the prediction on the device side is performed by the driver. There is a problem in that the driver's distrust of the device occurs when the intention does not match.

The present invention has been made in view of the above-mentioned conventional problems, and predicts a driving destination and actions to be taken based on past driving histories, and presents this to the driver. It is an object of the present invention to provide an in-vehicle information device that can also present the basis of the obtained information.

[0005]

According to another aspect of the present invention, there is provided an on-vehicle information device, a driving start / end detecting means for detecting a driving start / end, a clock means for detecting a driving date / time of a vehicle, and a current position of the vehicle. A current position detecting means for detecting the driving start point, a driving start point and a driving end point, a driving history storage means for cumulatively storing the date and time and the mileage at which these occurred, and when the driving start / end detecting means detects the driving start, The driving history information stored in the driving history storage means is searched by using the driving start date and time detected by the clock means and the information about the current position detected by the current location detection means as search conditions, and the frequency distribution data by destination and the maximum Frequency calculating means for creating required time frequency distribution data for frequency destinations, and predicting driving destinations based on the destination-specific frequency distribution data created by the frequency calculating means Destination predicting means, a required time predicting means for predicting a required time to the destination based on the required time frequency distribution data created by the frequency calculating means, and a destination predicted by the destination predicting means. A voice output means for outputting a name and the required time predicted by the required time predicting means by voice, a destination frequency of the driving, and a voice output of the required time, the destination frequency distribution data, the required time frequency distribution data And display means for displaying.

In the on-vehicle information device according to the first aspect of the present invention, the operation start / end detection means detects the operation start / end,
The driving start point and the driving end point, the date and time when they occurred, and the distance traveled are cumulatively stored as driving history information in the driving history storage means. Then, 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 location detection means in the operation history storage means as search conditions. The driving history information is searched for, and frequency distribution data for each destination and required time frequency distribution data for the most frequent destinations are created. Then, the destination predicting means predicts a driving destination based on the destination-specific frequency distribution data, and the required time predicting 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 estimated required time by voice, and together with this, the frequency distribution data by destination on the display means,
Display required time frequency distribution data.

As a result, the driver simply gets in the vehicle and performs a driving start operation, and automatically informs the driver of the destination name and the required time from the past driving history by voice and predicts the predicted destination. The reason 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 according to the first aspect, the display means displays each of the destination frequency distribution data and the required time frequency distribution data as a graph. By displaying the frequency distribution data in a graph, the driver can easily recognize the basis for determining the predicted destination and the predicted required time.

According to a third aspect of the present invention, in the vehicle-mounted information device according to the first or second aspect, the vehicle further comprises response input means for inputting a response from the driver, and the voice output means indicates the name of the destination of the driving. It outputs a voice and outputs the time required to reach the destination when a positive response is input by the response input means. When the operation start is detected and the destination prediction calculation is performed, the operation is performed. Only when the prediction matches the intended destination of the person, the information regarding the required time can be notified.

According to a fourth aspect of the present invention, in the vehicle-mounted information apparatus according to the first to third aspects, the operation start / end detecting means detects whether the ignition key is inserted or removed, and a time period from when the ignition key is inserted to when the ignition key is removed. It judges the start and end of driving based on either the time from removing the key to inserting it or the moving distance from inserting the ignition key to removing it, and it does not require a destination prediction calculation. It is possible to prevent the prediction calculation from being unnecessarily performed with respect to distance movement.

According to a fifth aspect of the present invention, in the on-vehicle information device according to the first to fourth aspects, the driving date and time detected by the clock means, the driving history information stored in the driving history storage means, and the search executed by the frequency calculating means. The conditions include day and time information as well as day and time information, which enables destination prediction that reflects the driver's driving history characteristics for each day of the week.

According to a sixth aspect of the present invention, in the on-vehicle information device according to the first to fifth aspects, the driving date and time detected by the clock means, the driving history information stored in the driving history storage means, and the search executed by the frequency calculating means. Holidays with date and time information
This includes holiday information, which makes it possible to predict a destination that reflects different driving history characteristics for weekdays and holidays / holidays.

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

[0014]

According to the first aspect of the present invention, the driver automatically gets the name of the destination and the required time from the past driving history by voice only when the driver gets into the vehicle and performs a driving start operation. Since the driver can be notified and the reason for determining the predicted destination and the predicted required time can be presented to the driver by displaying the frequency distribution data, when using the vehicle on a daily basis, the navigation device as in the conventional case is used. Even if you do not operate the vehicle, the vehicle will give driving advice to the driver based on the past driving history, it will be possible to give realistic advice, and at the same time present the prediction destination and Since the rationale is also presented, the driver will not be distrusted even if the prediction is wrong.

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

According to the third aspect of the present invention, when the driving start is detected and the destination prediction is calculated, the information about 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 invention, it is possible to prevent the prediction calculation from being unnecessarily performed for a short-distance movement that does not require the destination prediction calculation.

According to the invention of claim 5, it is possible to predict the destination reflecting the driving history characteristics of the driver for each day of the week.

According to the sixth aspect of the present invention, it is possible to predict a destination that reflects different driving history characteristics on weekdays and on holidays and holidays.

According to the invention of claim 7, the destination can be predicted according to the driving history characteristics of each driver.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a system configuration of an on-vehicle information device according to one embodiment of the present invention. This on-vehicle information device includes a GPS signal receiving unit 1 that receives a GPS signal for specifying the vehicle position, date and time, month, day, and day of the week, a navigation control unit 2 that performs various controls of the navigation device,
A map database 3 and a facility information database 4 used as a database of the navigation device, an information display section 5 such as a CRT or a liquid crystal monitor for displaying maps and information, and a state of an ignition key are detected to judge the start of driving. The driving start detection unit 6, the running distance calculation unit 7 that calculates the running distance of the vehicle, the driver identification unit 8 that identifies the driver from information such as an IC card, the driving date and time, the running start point, the ending point, the required time, It is provided with a traveling history temporary storage unit 9 for temporarily storing traveling history data including traveling distance, and a driving end detection unit 10 for detecting the end of driving from the state of the ignition key, the traveling distance, and the passage of time.

The on-vehicle information device further includes a travel history database 11 for storing a set of determined travel histories, a search condition determination unit 12 for performing a history search according to a date, a day of the week, etc., and search results based on the search conditions. From the frequency calculation unit 1 that calculates the frequency distribution of the driving destination and the required driving time from
3. Destination prediction unit 14 that predicts the destination based on the frequency distribution data, required time prediction unit 15 that predicts the required time to the destination, message generation that generates a message about the destination and the required time to reach it The unit 16 includes a voice synthesizing unit 17 that converts the generated message into a voice signal, and a voice output unit 18 that outputs the converted voice signal.

The in-vehicle device further provides a point list presenting unit 19 for giving a name to the point when there is a point that is visited for the first time or an unregistered point in the history, and a reply input to the output message or the presented list. To do the
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 newly inputting a destination when the destination is different from the predicted destination. Two
1 is provided.

Next, the operation of the on-vehicle information device of the embodiment having the above configuration will be described. The outline of the operation of this embodiment will be described first. The past travel history data such as the date and time of driving, the start point of operation, the destination point, the required time, and the traveled distance are accumulated and stored in the travel history database 11. The destination is predicted by frequency analysis by referring to the travel history database 11, the sound is output from the sound output unit 18 to the driver, and the frequency distribution data used as the basis of the prediction is displayed as a graph on the screen. Furthermore, if the driver gives a positive response to the call from the in-vehicle device to the destination, the time required to reach the destination is predicted by frequency analysis, and this is output as a voice, and at the same time, the frequency distribution used as the basis for the prediction. Display the data as a graph on the screen.

The operation of the on-vehicle information device of the above embodiment will be further described below with reference to FIGS. In the travel history database 11, the travel history data 31 of the date and time of driving, the driving start point, the destination point, the required time, and the mileage shown in FIG. 2 and the points where the driving is started and ended in the past shown in FIG. The latitude / longitude and the registration point data 32 of the label given to the latitude / longitude are cumulatively stored.

As shown in the flow charts of FIGS. 5 to 7, an IC in which the driver gets on and personal attributes are written
When the card is inserted, the driver identifying unit 8 identifies the driver (step S1), and when the ignition key is further inserted, the driving start detecting unit 6 detects the driving start and gives a trigger signal to the navigation control unit 2 ( Step S2). The criterion for starting the operation may include a condition that "a certain period of time has passed" since the ignition key was first removed.

When the navigation controller 2 receives the trigger signal from the driving start detector 6, the navigation controller 2 receives from the GPS signal receiver 1 position information (latitude, longitude information; driving start point information) of the vehicle at that time, and the current position information. Date / time information and day of the week information are captured and temporarily stored in the traveling history temporary storage unit 9. This information serves as a registration material for the travel history database 11, and is retained until the end of operation is determined (step S3).

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

When the previously registered spot information cannot be found, the spot list presenting section 19 presents a label representative of the present location to prompt the driver to register (step S).
4, S6, S7). In this process, the message generator 1
Designate the message registered in No. 6, and the voice synthesis unit 1
7 voice-synthesizes the contents of the message, and the voice output unit 18
As a voice, for example, a message “Where is this?” 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 unit 5 to inform the driver. A corresponding label is selected from the input unit 20. It is possible that the driver has no intention of inputting, so if there is no information input for a certain period of time, it is determined that a time-out has occurred and the mode is exited (step S8).

When the labeling of the starting point is completed,
The contents of the past travel history database 11 are searched based on the acquired information at the start of driving (step S
9, S10).

The search condition at this time is as follows:
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 labels of the departure points are equal are created, and based on these conditions, the travel history data of the past travel history database 11 is created. 31 is searched. As another search condition, if the date and time when the driving is started is Sunday, the "day of the week condition" that only the data of the past Sunday is searched, that is, the information of the past 20 days from the day when the driving is started is searched. There is also a "date condition". Then, these search conditions are listed in the search condition determination unit 12, and appropriate search conditions are derived from the attributes of the current date and time and the day of the week.

Here, based on the current date and time, day of the week, and place information, "time condition": operation started at the current time ± 30 minutes, "operation start point condition": operation started near the current position, ""Day of the week condition": Current date and time, weekdays only if it is a weekday, holidays, holidays if it is a holiday, only holidays, "date condition": last 20 days, and data is searched for by the logical product of four types of conditions That is set as the default search condition.

Since weekdays / holidays / holidays may differ depending on the individual, for example, it is possible to register them in an IC card and read them as holiday information from the driver identification unit 8. Further, the search condition is not limited to being set as the default search condition, but a new search condition may be generated from the attributes of the current date and time, day of the week, and location.
For example, if the day you started driving was "five or ten days",
If you search only the past "five or ten days", or if the day when you started driving is "cluster amaryllis", you can search only the past cluster amaryllis, and by setting these new search conditions , It becomes possible to extract information that is buried in information retrieval of consecutive dates.

For the data extracted by the above retrieval processing, the frequency calculation unit 13 converts the data into frequency distribution data as shown in FIG.
The frequency distribution map 41 for each destination label shown in FIG. 4 and the frequency distribution map 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 identified, the required time predicting unit 15 refers to the frequency distribution of the required time to the destination, determines the most frequent required time, and calculates the estimated required time. (Step S13).

Then, 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 XX department store."
Shall be generated. To generate this call-out sentence, the phrase data such as "... is" or "up to." Prepared in advance in the message generation unit 16 and the destination label determined by the destination prediction unit 14 are used. By combining.

The generated message is sent to the voice synthesizing unit 17, where the voice synthesizing device for converting the text data into a voice signal is used to generate voice data, and the voice output unit 18 outputs the voice as voice ( Step S15).

With the utterance of the destination name, the frequency calculation unit 1
3 displays the frequency distribution map by destination 41 shown in FIG. 8 created in step S11 on the information display section 5 (step S1).
6). In the frequency distribution map 41 for each destination displayed on the information display unit 5, the color of the most frequent location is changed and displayed so that it can be clearly distinguished from the others. However, instead of this, it is also possible to make it blink. The display of the frequency distribution map by destination 41 is erased after a predetermined time, for example, 5 seconds has elapsed.

When a message regarding 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 to the message. This includes "YES" displayed on the information display unit 5,
The display of "NO" may be selected and confirmed by the remote control switch, or a touch panel may be provided on the information display unit 5 to input the information by touching the display buttons of "YES" and "NO". In addition, by preparing a voice recognition device as the information input unit 20 and recognizing the voices "Yes" and "No" uttered by the driver,
Alternatively, the input may be performed by operating a mechanical switch installed near the driver's seat.

If the answer is YES, step S1
The time required to reach the destination predicted in 3 is output via the message generation unit 16, the voice synthesis unit 17, and the voice output unit 18. At this time, for example, the 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 map 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 map 4
In the display of No. 2, as in the case of the display of the frequency distribution map by destination, by changing the color of the place with the highest frequency so that it can be clearly distinguished from the other, or by blinking the display. Make it easy for the driver to recognize at a glance. Then, the display of the required time frequency distribution map 42 is erased after a predetermined time, for example, 5 seconds has elapsed.

If the driver does not reply for a certain period of time or more, it is judged that he / she does not have the intention of inputting the destination, and the process is ended and the process proceeds to step S25 (steps S17, S).
20, S21).

If the driver's reply is NO (step S20), the voice output unit 18 outputs a message prompting the input of a new destination (step S2).
2). For this, for example, a message such as "I will guide you through the route, please enter the destination." Can be output.

In response to the destination input request, the driver inputs the destination using the destination input unit 21, which is stored in the running history temporary storage unit 9 as the driving start point, the date and time, the day of the week, etc., and the time information. It is temporarily stored together with the data and is used as a material for the travel history data at the time of the end of the subsequent operation (step S23). In order to input the destination, the destination input unit 21 is searched and set on the map for the destination point as in the conventional navigation system. It should be noted that, if the destination is not input even after the elapse of a certain period of time, the time is out and the process proceeds to the next processing step S25 (step S24).

By the above processing, the operation start point, the start date and time, the day of the week, etc. are input, the destination is predicted and the required time is predicted.
Further, when the input of the new destination is completed, the driving is started toward the destination. Whether or not the vehicle has arrived at the destination is determined by whether or not the ignition key is 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. When the ignition key is removed (step S25), the time T1 when the operation is determined to start and the current time T
2 is compared with each other, and it is a condition that a certain period of time has elapsed and that the traveling distance between them is equal to or more than a certain distance (steps S26 and S27). For example, when the time T1 determined to start driving and the current time T2 are extremely short (for example, 3 minutes), or the traveling distance from when the ignition key is inserted to when the ignition key is pulled out is extremely short (for example, 500 m). In this case, it is determined that the vehicle is not driving, and the temporarily stored data at the start of driving is deleted from the traveling history temporary storage unit 9 (step S28).

Step S2 is performed by the operation end detection unit 10.
When it is judged that the destination has arrived after the judgment of 5 to S27,
The travel distance calculation unit 7 receives the position information (latitude, longitude) of the vehicle at that time, the date and time at that time, and the day of the week information from the navigation control unit 2, and calculates the required time from the start of driving and the travel distance. Then, the position information and the time information at the end of the operation, and the information on 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 running history temporary storage unit 9 is compared with the data of the running history database 11, and past registration point data 3
The operation ending point is labeled with reference to step 2 (steps S30 and S31). If the label is already assigned, this process is unnecessary.

On the other hand, when the driving is finished at an unprecedented point, the point list presenting section 19 presents a label list representing the present location, and the label list is selected and registered by this (steps S30 and S32). , S33). That is, the label list 33 shown in FIG. 4 is displayed on the information display section 5, and the destination input section 21 selects and confirms the label list 33.
After that, the latitude and longitude values are close to that (for example, radius 50
If it is within m), the same label will be given. As a result, even if 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 fixed time, it is determined that there is no intention to register, and the process proceeds to the next step S35 (step S34).

Since the acquisition of the history data of one drive is completed by the above series of processing, the series of data acquired at the start and end of the operation is transferred from the running history temporary storage unit 9 to the running history database 11 thereafter. 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 charts 41 and 42 of the traveling history database 11 thus accumulated and stored.
Can be browsed by the driver at any timing, and when it is necessary to browse, the information input unit 20
By sending instructions from the driving history database 11
And the frequency distribution diagrams 41 and 42 are displayed on the information display unit 5.

In this way, the above-mentioned on-vehicle information device refers to the database that cumulatively stores the past driving history to predict the driving destination and the required driving time, and informs the driver of the prediction result. Since it is configured, it is possible to predict the actual destination and the required time, the driver can be presented with more accurate information, and the device side will accurately predict the destination. The labor of operating the navigation device such as setting is reduced. In addition, the more the vehicle is used in order to use the cumulative memory type database, the more the call that suits the driver's behavior pattern can be made.
The destination can be presented more accurately.

Further, referring to a database in which past driving histories are cumulatively stored, the driving destination is predicted and the required driving time is predicted, the predicted result is transmitted to the driver by voice, and the frequency used as the basis for the prediction is calculated. Since the distribution data is displayed as a graph on the screen, it is easy for the driver to understand why such destination prediction and required time prediction were performed, and the convincing appeal of the destination prediction at the start of driving. Is improved. In addition, even if the destination intended by the driver is the destination predicted by the device side, the reason predicted by the device side is displayed, so the reason for the driver input device can be understood. The driver no longer feels distrust of.

In addition to these, it is determined whether or not the vehicle has been driven depending on the time from the time the ignition key is inserted until the key is removed and the distance traveled, and the operation is started based on the lapse of time from the key removal to the next insertion. Because it is detecting
It will be possible to determine the start of driving and the running that are close to reality.

In the above embodiment, the predicted required time is uttered when an affirmative response is input to the utterance of the predicted destination, but instead of this, the predicted destination and its The predicted required time may be uttered at a time, and the frequency distribution map 41 for each destination and the time distribution graph 42 for the most frequent destinations may be simultaneously displayed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of one embodiment of the present invention.

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

FIG. 3 is an explanatory diagram of registration point data in the travel history database in the above embodiment.

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

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

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

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

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

FIG. 9 is a time-frequency distribution diagram for a driver's place in the above embodiment.

[Explanation of symbols]

1 GPS signal receiver 2 Navigation controller 3 map database 4 facility information database 5 Information display section 6 Operation start detector 7 mileage calculation section 8 driver identification section 9 Travel history temporary storage 10 Operation end detector 11 Driving history database 12 Search condition determination unit 13 Frequency calculator 14 Destination Prediction Department 15 Time required prediction unit 16 Message generator 17 Speech synthesizer 18 Audio output section 19 Point list presentation section 20 Information input section 21 Destination input section

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Norimasa Kishi 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) Reference JP-A-7-83678 (JP, A) JP-A-7 -160194 (JP, A) JP-A-8-82527 (JP, A) JP-A-8-271277 (JP, A) JP-A-9-5099 (JP, A) JP-A-9-134496 (JP, A) ) JP-A-9-280881 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01C 21/00-21/36 G08G 1/0969 B60R 16/02

Claims (7)

(57) [Claims] 1. A driving start / end detection means for detecting driving start / end, a clock means for detecting a driving date / time of a vehicle, a current position detection means for detecting a current position of the vehicle, a driving start point and a driving end point. Driving history storage means for cumulatively storing the date and time and the traveled distance, and the operation start date and time detected by the clock means and the current location detection means when the operation start / end detection means detects the operation start. The frequency calculation for searching the driving history information stored in the driving history storage means using the information about the current position as a search condition, and creating the frequency distribution data for each destination and the required time frequency distribution data for the most frequent destinations Means, a destination prediction means for predicting a driving destination based on the frequency distribution data for each destination created by the frequency calculation means, and a creation of the frequency calculation means A required time predicting means for predicting a required time to the destination based on the required time frequency distribution data, a destination name predicted by the destination predicting means, and a required time predicted by the required time predicting means An in-vehicle information device comprising: a voice output unit for outputting a voice output; and a display unit for displaying the destination frequency distribution data and the required time frequency distribution data when the driving destination and the required time are output by voice. . 2. The on-vehicle information device according to claim 1, wherein the display unit displays the frequency distribution data for each destination and the required time frequency distribution data as a frequency distribution graph. 3. A response input means for inputting a response from a driver is provided, wherein the voice output means outputs a voice of a name of a destination of the driving, and the response input means makes a positive response input. The vehicle-mounted information device according to claim 1 or 2, 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 insertion of the ignition key to removal thereof, the time from removal of the ignition key to insertion of the ignition key, and The start and the end of the driving are determined based on any one of the moving distances from the removal to the removal.
The in-vehicle information device according to item 3. 5. The driving date and time detected by the clock means, the driving history information stored in the driving history storage means, and the search condition executed by the frequency calculation means include date and time information as well as day of the week information. The vehicle-mounted 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 are included in the date and time information and
The vehicle-mounted information device according to any one of claims 1 to 5, further comprising holiday information. 7. A driver identifying means for identifying a driver is provided, and the frequency calculating means predicts a destination and time required for driving according to the driver identified by the driver identifying means. The vehicle-mounted information device according to any one of claims 1 to 6.