JP6859221B2 - In-vehicle device, preference identification method - Google Patents

Description

The present invention relates to an in-vehicle device and a method for specifying a preference.

The car navigation device has a route calculation function for calculating routes to various destinations input by the user, but there is complexity in inputting the destination by the user. Further, in a device having a plurality of functions, it is necessary for the user to clearly indicate the function to be used, which makes the use of the device more complicated. Patent Document 1 includes a function of registering the user's implicit preference information based on the user's activity, a function of voice-outputting a question to the user based on the implicit preference information, and the question. An information processing device including a processor that realizes a function of acquiring an answer from the voice of the user and a function of registering explicit preference information of the user in response to the answer is disclosed.

Japanese Unexamined Patent Publication No. 2015-35140

In the invention described in Patent Document 1, it is not possible to specify the preference of the occupant in consideration of the passenger.

The in-vehicle device according to the first aspect of the present invention includes a feature amount calculation unit that calculates a feature amount that is a feature of an occupant riding in a vehicle, and a feature amount DB that stores the feature amount of the plurality of the occupants. , A feature amount DB interface unit that accesses the feature amount DB, a configuration specifying unit that specifies the occupant configuration of the vehicle based on the feature amount calculated by the feature amount calculation unit, and each occupant configuration in combination with time information. The preference DB interface unit that accesses the preference DB in which the history of the preference is stored, the preference DB, the occupant configuration specified by the configuration specifying unit, and the occupant's preference are specified based on the time information based on the current time. It is provided with a preference identification unit.
The preference identification method according to the second aspect of the present invention includes a feature amount DB interface unit for accessing the feature amount DB in which the feature amount, which is a feature of the occupant in the vehicle, is stored for the plurality of the occupants of the vehicle. A preference identification method executed in an in-vehicle device provided with a preference DB interface unit for accessing a preference DB in which a history of preferences for each occupant configuration of the vehicle is stored in combination with time information. The calculation is performed, the occupant configuration is specified based on the calculated feature amount, and the occupant's preference is specified based on the preference DB, the identified occupant configuration, and the time information based on the current time.

According to the present invention, it is possible to accurately identify the occupant's preference in consideration of the passenger.

The figure which shows the hardware composition of the vehicle 100 in 1st Embodiment Functional configuration diagram of the in-vehicle device 1 according to the first embodiment The figure which shows an example of the feature quantity DB21 The figure which shows an example of preference DB22 The figure which shows an example of a sleep table 25 A flowchart showing the operation of the in-vehicle device 1 when the door of the vehicle 100 is opened and closed. A flowchart showing the details of step S217 of FIG. A flowchart showing the details of step S218 of FIG. Flow chart showing the processing of the in-vehicle device 1 corresponding to the sleep of the occupant Flowchart showing the process of recording occupant preferences The figure which shows the hardware configuration of the vehicle 100A and the server 300 in the 2nd Embodiment Functional configuration diagram of in-vehicle device 1A and server 300

-First Embodiment-
Hereinafter, the first embodiment of the in-vehicle device will be described with reference to FIGS. 1 to 10. In the present embodiment, a person who is in a vehicle equipped with an in-vehicle device is also referred to as an occupant.

(Hardware configuration)
FIG. 1 is a diagram showing a hardware configuration of an in-vehicle device 1 and a vehicle 100 equipped with the in-vehicle device 1. The vehicle 100 includes an in-vehicle device 1, a GPS receiver 6, a camera 7, a touch panel 8, and a speaker 9. However, a part or all of the GPS receiver 6, the camera 7, the touch panel 8, and the speaker 9 may be included in the in-vehicle device 1. The GPS receiver 6 is a receiver that constitutes a satellite positioning system. The GPS receiver 6 receives signals from a plurality of artificial satellites constituting the satellite navigation system, and calculates the current position of the vehicle 100 by analyzing the information contained in the signals. The GPS receiver 6 outputs the calculated current position of the vehicle 100 to the in-vehicle device 1. The camera 7 photographs the inside of the vehicle 100 and outputs an image obtained by photographing (hereinafter, “photographed image”) to the in-vehicle device 1. The touch panel 8 receives an operation command from the vehicle-mounted device 1 to the occupant, and is used to provide information from the vehicle-mounted device 1 to the occupant. The speaker 9 is used to provide voice information from the vehicle-mounted device 1 to the occupant.

The in-vehicle device 1 includes a CPU 2, a ROM 3, a RAM 4, and a flash memory 5. The CPU 2 is a central arithmetic unit, and a program (not shown) stored in the ROM 3 which is a read-only memory is expanded and executed in the RAM 4 which is a random access memory to realize a function described later. The flash memory 5 is a non-volatile storage device and stores information described later.

(Functional configuration)
FIG. 2 is a functional configuration diagram of the in-vehicle device 1. However, the information stored in the flash memory 5 is also shown in FIG. Further, some information stored in the flash memory 5 will be described with reference to FIGS. 3 to 5. The flash memory 5 includes a feature amount database (hereinafter, "feature amount DB") 21, a preference database (hereinafter, "preference DB") 22, a POI database (hereinafter, "POIDB") 23, and a content database (hereinafter, "POIDB"). , "Content DB") 24 and the sleep table 25 are secured. The POI is a Point Of Interest, that is, a specific point on the map.

FIG. 3 is a diagram showing an example of the feature amount DB 21, FIG. 4 is a diagram showing an example of the preference DB 22, and FIG. 5 is a diagram showing an example of the sleep table 25. As shown in FIG. 3, the feature amount DB 21 stores a person ID, an addition date of the person ID, and a combination of the feature amount of the person. The person ID is an identifier that uniquely identifies an occupant, and is composed of, for example, a single character, a symbol, a numerical value, or a combination thereof. In the present embodiment, as shown in FIG. 3, the person ID is represented by one letter of the alphabet. The addition date of the person ID is information indicating the date when the person ID is added to the feature amount DB 21. The feature amount is a numerical value of a person's characteristics that can be evaluated quantitatively. In the present embodiment, a person's face obtained from an image captured by the camera 7 is used. Specifically, as shown in FIG. 3, the feature quantity is a combination in which the sizes, positions, and intervals of the eyes, ears, nose, etc. are quantified.

As shown in FIG. 4, the preference DB 22 stores a combination of occupant composition, time zone, destination POI genre, and viewing content genre. The occupant composition is a person who is in the vehicle 100, for example, only A, two people A and B, three people A to C, and the like. However, as will be described later, occupants who are in a sleeping state even if they are in the vehicle 100 are excluded from the occupant composition. The time zone is, for example, information obtained by deleting information less than a minute from the time information, and when the current time is "12:34:56", it is in the "12 o'clock range". The POI genre of the destination is information indicating the genre of the POI set by the occupant as the destination. The viewing content genre is information indicating the genre of the content viewed by the occupant.

POIDB23 is a database in which a large amount of POI information is stored. The POI information includes at least the name of the POI, the location of the POI, and the genre of the POI. However, the POIDB 23 may be updated via a wireless communication (not shown) provided in the vehicle 100, or the vehicle 100 is not provided with the POIDB 23 and refers to an external POIDB 23 via a wireless communication (not shown) when necessary. You may.

The content DB 24 is a database in which a plurality of viewing contents such as audio and video are stored. The genre of the content is set for each viewing content. The content DB 24 also stores the playback time for each content. The content is reproduced by a content reproduction unit (not shown), the sound is output from the speaker 9, and the video is output from the touch panel 8. As shown in FIG. 5, the sleep table 25 is a table showing whether the current occupant of the vehicle 100 is in a sleep state or an awake state. In this embodiment, a person who is not in the vehicle 100 is not listed on the sleep table 25.

The in-vehicle device 1 has features such as a feature amount calculation unit 11, a feature amount recording unit 12, a configuration identification unit 13, a preference identification unit 14, a confirmation unit 15, an execution unit 16, and a sleep determination unit 17. A preference detection unit 18, a preference recording unit 19, a route search unit 19A, and an IO interface 19P are provided.

The IO interface 19P functions as an interface when each functional component of the CPU 2 accesses the flash memory 5, that is, as a window for input and output to the flash memory 5. Each functional component of the CPU 2 is all the components that access the information stored in the flash memory 5. For example, when the feature amount recording unit 12 reads and writes to the feature amount DB 21, the feature amount recording unit 12 reads and writes to the feature amount DB 21 via the IO interface 19P. However, in the following, in order to avoid redundant explanation, the description about the IO interface 19P is omitted, and the description is made as if each functional component directly accesses the flash memory 5.

The feature amount calculation unit 11 extracts a person from the captured image and calculates the feature amount of the person. The timing at which the feature amount calculation unit 11 calculates the feature amount is, for example, when the door of the vehicle 100 is opened or closed. The opening and closing of the door of the vehicle 100 is determined by the output of a sensor (not shown) provided in the vehicle 100, for example, a proximity sensor that detects whether or not the door is present at a predetermined position. When the feature amount calculated by the feature amount calculation unit 11 is not stored in the feature amount DB 21, the feature amount recording unit 12 stores the feature amount in the feature amount DB 21 and assigns a new person ID. For example, if the feature amounts of three people A to C are stored in the feature amount DB21 and the feature amount calculated by the feature amount calculation unit 11 is not stored in the feature amount DB21, the feature amount is used as the feature amount. It is stored in DB 21 and the person ID is set to "D". Further, the feature amount calculation unit 11 stores information indicating the date of the processing date in the feature amount DB 21 as an additional date.

The configuration specifying unit 13 specifies the configuration of the occupant riding in the vehicle 100 based on the feature amount calculated by the feature amount calculating unit 11 and the feature amount DB 21. At this time, the configuration specifying unit 13 specifies two types of occupant configurations, a recording occupant configuration and a specific occupant configuration, according to the purpose of use. The recording occupant configuration is a occupant configuration used when the preference recording unit 19 records the occupant's preference, and includes an occupant added to the feature amount DB 21 on the day. On the other hand, the specific occupant configuration is the occupant configuration used when the preference specifying unit 14 specifies the preference of the occupant, and does not include the occupant added to the feature amount DB 21 on the day. That is, when there is no occupant added to the feature amount DB 21 on the day, these occupant configurations are the same. The position where each occupant is on does not affect the identification of any occupant composition. For example, when A and B are in the vehicle 100, even if A and B exchange seats, neither of the occupant configurations changes. However, the configuration specifying unit 13 excludes the sleeping occupants from any of the occupant configurations, as will be described later.

The preference specifying unit 14 specifies the preference of the occupant based on the specific occupant configuration specified by the configuration specifying unit 13 and the time information based on the current time. For example, when the preference DB 22 is as shown in FIG. 4, when the occupant composition is only A and the current time zone is in the 11 o'clock range, the POI genre of the destination is set to "Udon" as the preference of the occupant A. Specify the viewing content genre as "news program".

The confirmation unit 15 sets the POI belonging to the genre specified by the preference specifying unit 14 as the destination, and inquires the occupant whether or not to reproduce the content belonging to the genre specified by the preference specifying unit 14. When the occupant gives a positive answer to the inquiry by the confirmation unit 15, the execution unit 16 sets the POI belonging to the genre specified by the preference identification unit 14 as the destination, and sets the POI to the genre specified by the preference identification unit 14. Play the content to which it belongs.

The sleep determination unit 17 acquires and analyzes captured images at predetermined time intervals, for example, every minute. The sleep determination unit 17 determines whether each occupant is in an awake state or a sleep state based on the presence or absence of movement of the occupant in the captured image and the opening / closing time of the eyelids. Then, the sleep determination unit 17 reflects the determination result on the sleep table 25. The preference detection unit 18 detects the setting of the destination by the occupant and the selection of viewing of the content, that is, the reproduction of the content.

The preference recording unit 19 stores a combination of the recording occupant configuration specified by the configuration specifying unit 13, time information based on the current time, and the occupant's preference detected by the preference detecting unit 18 in the preference DB 22. However, if the information is already stored in the corresponding column of the preference DB 22, the previous information may be deleted and rewritten, or the information to be stored in the preference DB 22 may be determined based on the number of detections. , The information to be stored may be determined by the weighting process of the number of executions and the execution time.

The route search unit 19A searches for a route from the current position of the vehicle 100 to the set destination and outputs the route to the touch panel 8. The route search unit 19A acquires the current position of the vehicle 100 from the GPS receiver 6. The destination can be set by the occupant using the touch panel 8, but is also set by the execution unit 16 as described later.

(motion)
Hereinafter, the operation of the in-vehicle device 1 will be described with reference to FIGS. 6 to 10.

(Flowchart | Door opening and closing)
FIG. 6 is a flowchart showing the operation of the in-vehicle device 1 when the door of the vehicle 100 is opened and closed. The execution body of each step of the flowchart described below is the CPU 2 of the in-vehicle device 1. When the door of the vehicle 100 is opened and closed, the feature amount calculation unit 11 acquires a photographed image from the camera 7 (step S211) and calculates the feature amount of the person (step S212). In the following step S213, the feature amount recording unit 12 determines whether or not a new feature amount has been calculated in step S212. In other words, in step S213, it is determined whether or not the feature amount calculated in step S212 is stored in the feature amount DB 21. If it is determined that the new feature amount has been calculated, the process proceeds to step S214, and if it is determined that the new feature amount has not been calculated, the process proceeds to step S215. If a plurality of feature quantities are calculated in step S212, the process proceeds to step S214 if even one new feature quantity is calculated, and step S214A is performed only when all the feature quantities are stored in the feature quantity DB 21. Proceed to.

In step S214, the feature amount recording unit 12 adds the newly detected feature amount to the feature amount DB 21. That is, the feature amount recording unit 12 creates a new person ID and records it as a "person ID", records the date of the day as an "additional date", and records the detected feature amount as a "character feature amount of a person". .. In the following step S214A, the sleep determination unit 17 creates the sleep table 25. That is, the sleep determination unit 17 specifies the person IDs of the persons corresponding to the respective feature amounts calculated in step S212 from the feature amount DB 21, and creates a sleep table 25 having those person IDs. Further, the sleep determination unit 17 identifies whether each occupant is in a sleep state or a wakeful state from the captured image, and records the specified state in the sleep table 25.

In the following step S215, the configuration specifying unit 13 determines the specific occupant configuration. That is, the configuration specifying unit 13 is a person having the feature amount calculated in step S212 with reference to the feature amount DB 21 and the sleep table 25, and all the persons whose addition date to the feature amount DB 21 is not the current day and are in the awake state. The person in question is the specific occupant composition. In the following step S216, the preference specifying unit 14 identifies the preference of the occupant with reference to the preference DB 22 based on the specific occupant configuration determined in step S215 and the current time zone. When the preference specifying unit 14 identifies the occupant's preference, the execution unit 16 executes the POI setting process in step S217 and the content execution process in step S218. This completes the process shown in FIG.

If the corresponding column in the preference DB 22 is blank in step S216, that is, the information is not stored and the POI genre of the destination according to the preference of the occupant cannot be specified, step S217 is not executed. Similarly, if the viewing content genre according to the taste of the occupant cannot be specified in step S216, step S218 is not executed.

FIG. 7 is a flowchart showing the details of step S217 of FIG. In FIG. 7, the execution unit 16 first acquires the current position of the vehicle 100 from the GPS receiver 6 in step S221. Then, in step S222, the execution unit 16 refers to POIDB23 and searches for POIs belonging to the target genre that exist within a predetermined distance from the current position of the vehicle 100, for example, within a radius of 10 km. At this time, the execution unit 16 sets the POI genre of the destination specified as the preference of the occupant in step S216 of FIG. 6 as the target genre. In the following step S223, the execution unit 16 determines whether or not a POI corresponding to the condition exists based on the search in step S222. If it is determined that it exists, the process proceeds to step S224, and if it is determined that it does not exist, the process proceeds to step S225.

In step S224, the confirmation unit 15 proposes to the occupant using the touch panel 8 that the POI obtained in step S222 is set as the destination. When a plurality of POIs are searched for in step S222, for example, only the POI closest to the current position may be proposed as the destination. In step S225, the confirmation unit 15 proposes to the occupant that a POI of another genre existing within a predetermined distance is set as the destination. However, in step S225, the execution unit 16 may propose a POI of the target genre that is separated by a predetermined distance or more as a destination. In step S226, which is executed after step S224 or step S225, the execution unit 16 determines whether or not the occupant has approved the proposal. If it is determined that approval has been obtained, the process proceeds to step S227, the proposed POI is set as the destination of the route search, the flowchart of FIG. 7 is terminated, and if it is determined that the proposal is denied, the flowchart of FIG. 7 is used as it is. finish.

FIG. 8 is a flowchart showing the details of step S218 of FIG. In FIG. 8, the confirmation unit 15 first proposes to the occupant the reproduction of the content belonging to the viewing content genre specified as the occupant's preference in step S216 of FIG. 6 in step S231 using the touch panel 8. In the following step S232, the execution unit 16 determines whether or not the occupant has approved the proposal. If it is determined that the approval has been obtained, the process proceeds to step S233 to read the content of the proposed genre from the content DB 24 and play it back to end the flowchart of FIG. 8. If it is determined that the proposal has been denied, the flowchart of FIG. 8 is displayed as it is. To finish.

(Flowchart | Correspondence to sleep)
FIG. 9 is a flowchart showing the processing of the in-vehicle device 1 corresponding to the sleep of the occupant. The in-vehicle device 1 executes a program whose operation is represented by the flowchart of FIG. 9 at regular time intervals, for example, every 10 minutes. Of the processes included in the flowchart shown in FIG. 9, the same processes as those included in the flowchart of FIG. 6 are given the same step numbers and the description thereof will be omitted. In FIG. 9, first, in step S211 the sleep determination unit 17 acquires a photographed image, and in the subsequent step S241, the sleep determination unit 17 detects the sleep state of the occupant.

In the following step S242, the sleep determination unit 17 determines whether or not the state of the occupant detected in step S241 matches the information recorded in the sleep table 25. When the sleep determination unit 17 determines that the two match, that is, there is no change in the sleep state of the occupant, the sleep determination unit 17 ends the flowchart shown in FIG. 9, and determines that the two do not match, that is, the sleep state of the occupant has changed. In the case, the process proceeds to step S243. In step S243, the sleep determination unit 17 rewrites the sleep table 25 based on the sleep state detected in step S241 and proceeds to step S215A. In step S215A, the configuration specifying unit 13 updates the specific occupant configuration determined in step S215 of FIG. The processing content in this step is the same as in step S215 of FIG. Next, the process proceeds to step S216. Since the processing after step S216 is the same as that in FIG. 6, the description thereof will be omitted.

(Flowchart | Record)
FIG. 10 is a flowchart showing a process of recording the occupant's preference. The in-vehicle device 1 executes a program whose operation is represented by the flowchart of FIG. 10 at short time intervals, for example, every second. In FIG. 10, first, in step S251, the preference detection unit 18 determines whether or not the movement by the occupant has been detected. The operation by the occupant is an active destination setting and content reproduction by the occupant. Specifically, the destination setting and content reproduction not based on the inquiry from the execution unit 16 shown in FIGS. 6 and 9. Is. If it is determined that the movement of the occupant is detected, the process proceeds to step S252, and if it is determined that the movement of the occupant is not detected, the flowchart shown in FIG. 10 ends.

In step S252, the configuration specifying unit 13 determines the recording occupant configuration. That is, the configuration specifying unit 13 refers to the feature amount DB 21 and the sleep table 25, and sets all the persons having the feature amount calculated in step S212 and who are in the awake state as the recording occupant configuration. That is, the recording occupant configuration also includes the occupant whose addition date to the feature amount DB 21 is the current day. In the following step S253, the preference recording unit 19 updates the preference DB 22 based on the operation of determining that the detection was detected in step S251 and the recording occupant configuration determined in step S252. However, the POI genre of the destination records the genre of the destination with reference to POIDB23 for the set specific destination. Further, as the viewing content genre, the genre of the content is recorded with reference to the content DB 24 for the reproduced specific content. This is the end of the flowchart of FIG.

According to the first embodiment described above, the following effects can be obtained.
(1) The in-vehicle device 1 is an IO interface that accesses a feature amount calculation unit 11 that calculates a feature amount that is a feature of an occupant riding in a vehicle 100, and a feature amount DB 21 that stores the feature amounts of a plurality of occupants. The 19P, the feature amount DB 21, the configuration specifying unit 13 that specifies the occupant configuration of the vehicle 100 based on the feature amount calculated by the feature amount calculating unit 11, and the combination of preferences for each occupant configuration are stored in combination with the time information. It includes an IO interface 19P for accessing the preference DB 22, a preference DB 22, a specific occupant configuration specified by the configuration specifying unit 13, and a preference specifying unit 14 for specifying an occupant's preference based on time information based on the current time. Therefore, the in-vehicle device 1 can accurately identify the occupant's preference in consideration of the passenger of the vehicle 100.

(2) The occupant's preference specified by the preference specifying unit 14 is a genre of content or a genre of POI. When the preference specifying unit 14 identifies the occupant's preference (step S216 in FIGS. 6 and 9), the content belonging to the specified preference genre is reproduced, and the POI belonging to the specified preference genre is set as the destination. It is provided with a confirmation unit 15 for inquiring the occupant whether or not the operation is possible. Therefore, the in-vehicle device 1 can specify the occupant's preference based on the occupant's preference history, enable the operation according to the user's preference, and prevent the occupant's unintended operation by asking the occupant for confirmation. it can.

(3) The in-vehicle device 1 includes a sleep determination unit 17 that determines whether the occupant of the vehicle is in a sleep state or an awake state. The configuration specifying unit 13 updates by excluding the occupant who determines that the sleep determining unit 17 is in the sleeping state from the occupant configuration for specifying (step S215A in FIG. 9). When the configuration specifying unit 13 updates the specific occupant configuration, the preference specifying unit 14 identifies the occupant's preference based on the updated specific occupant configuration. The presence of a sleeping person in the vehicle 100 may not be considered in the selection of content to be viewed by humans and the setting of destinations. The in-vehicle device 1 can improve the convenience of the occupant by imitating such a human decision in selecting content and setting a destination.

(4) When the occupant determined by the sleep determination unit 17 to be in the sleeping state shifts to the awake state, the configuration specifying unit 13 updates the occupant who has transitioned to the awake state to be included in the specific occupant configuration. Therefore, the preference can be appropriately specified according to the awakening of the occupant.

(5) When the feature amount calculated by the feature amount calculation unit 11 is not stored in the feature amount DB 21, the preference specifying unit 14 selects an occupant having a feature amount not stored in the feature amount DB 21 from the identification occupant configuration. Exclude and identify occupant preferences. Since the feature amount is not stored in the feature amount DB 21, it is assumed that the occupant having the feature amount is a temporary occupant of the vehicle 100. For example, it is assumed that the vehicle 100 is vacant in a vacant seat during daily movement using the vehicle 100. In that case, it is considered that the temporary occupant does not affect the destination setting and content selection. The preference specifying unit 14 can appropriately identify the preference of the occupant based on such an assumption.

(6) When the feature amount calculated by the feature amount calculation unit 11 is not stored in the feature amount DB 21, the in-vehicle device 1 newly stores the feature amount calculated by the feature amount calculation unit 11 in the feature amount DB 21. A quantity recording unit 12 is provided. The in-vehicle device 1 includes a preference detection unit 18 that detects the preference of the occupant. The in-vehicle device 1 includes a preference DB 21 and a preference recording unit 19 that stores a combination of occupant configurations for recording, time information based on the current time, and occupant preferences detected by the preference detection unit 18. The recording occupant configuration recorded by the preference recording unit 19 in the preference DB 21 includes an occupant whose feature amount is not stored in the feature amount DB 21. Therefore, when the occupant whose feature amount is not stored in the feature amount DB 21 next gets on the vehicle 100, the preference specifying unit 14 specifies the preference based on the occupant's preference when the occupant boarded the vehicle last time. Can be done.

(7) The in-vehicle device 1 includes a feature amount DB 21 and a preference DB 22. Therefore, the in-vehicle device 1 can directly access the feature amount DB 21 and the preference DB 22 without communicating with the outside.

(Modification example 1)
The execution unit 16 may set the destination and reproduce the content without confirming with the occupant. In this case, a positive judgment is always made in step S226 of FIG. 7 and step S232 of FIG.

According to this modification 1, the following effects can be obtained.
(8) The execution unit 16 reproduces the content belonging to the genre of the specified preference or sets the POI belonging to the genre of the specified preference to the destination based on the preference of the occupant specified by the preference specifying unit 14. Do. Therefore, according to this modification, it is possible to quickly select the content and set the destination based on the specific result of the preference specifying unit 14.

(Modification 2)
The weather may be further combined and recorded in the preference DB 22. In this case, the POI genre of the destination and the genre of the viewing content are specified from the occupant composition, the time zone, and the weather. According to this modification, the preference of the occupant can be specified in more detail.

(Modification example 3)
The in-vehicle device 1 may also execute the process shown in FIG. 6 when the ignition key switch of the vehicle 100 is turned on. Further, the in-vehicle device 1 does not execute the process shown in FIG. 6 only by detecting the opening / closing of the door, and when it is determined that the occupant configuration has changed due to the output of the camera 7 or a weight sensor (not shown), FIG. The processing shown may be executed.

(Modification example 4)
In the first embodiment described above, in step S224 of FIG. 7, only the POI closest to the current position was presented to the occupant. However, for example, the top three POIs may be presented to the occupants in order of proximity to the current position. In that case, if any of the three POIs presented by the occupant is selected, an affirmative determination is made in step S226, and the POI selected by the occupant is set as the destination in step S227.

(Modification 5)
The in-vehicle device 1 may detect that the reproduction of the content is completed and propose the reproduction of the content. In this case, when the in-vehicle device 1 detects that the reproduction of the content is completed, it executes steps S215, S216, and S218 of FIG.

(Modification 6)
The feature amount DB 21 does not have to include information on the date of addition. In that case, the information indicating the person added on the day may be separately managed in the feature amount DB 21 so that the configuration specifying unit 13 can determine it.

(Modification 7)
The in-vehicle device 1 does not have to include the sleep determination unit 17 and the sleep table 25. In this case, unlike the first embodiment, the sleeping person is also included in the recording occupant configuration and the specific occupant configuration.

(Modification 8)
The preference DB 22 may store information that identifies a single viewing content instead of the viewing content genre.

(Modification 9)
The configuration specifying unit 13 does not have to distinguish between the recording occupant configuration and the specific occupant configuration. That is, the configuration specifying unit 13 may not include the occupants added on the day in the recording occupant configuration, or may include the occupants added on the day in the specific occupant configuration.

(Modification example 10)
The preference DB 22 may not include one of the destination POI genre and the viewing content genre. In this case, one of S217 and S218 in FIGS. 6 and 9 is deleted according to the configuration of the preference DB 22.

(Modification 11)
In the first embodiment described above, only the occupants of the vehicle 100 are described in the sleep table 25, but all the occupants registered in the feature amount DB 21 may be described in the sleep table 25. In that case, in the state of the person who is not in the vehicle 100, a state amount that can be distinguished from "awakening" and "sleeping", for example, "getting off" is stored.

(Modification 12)
The in-vehicle device 1 may use a non-captured image to identify a person. For example, a person may be identified by using information such as the weight of the person obtained from the weight sensor, the face of the occupant obtained from the infrared sensor, and the movement characteristics of the person obtained from the acceleration sensor. Further, the in-vehicle device 1 may further include a sensor necessary for identifying a person.

(Modification 13)
In the example of the preference DB 22 shown in FIG. 4, only one POI genre and one viewing content genre of the destination are stored, but a plurality of genres may be stored in each of the preference DB 22. In this case, a plurality of candidates may be stored in parallel without setting a priority order, or are ranked and ranked based on the number of executions and the elapsed time from the execution time. May be stored.

(Modification 14)
In the preference DB 22, the time zone does not have to be the information obtained by deleting the information of minutes or less from the time information. For example, a period of one hour or more, for example, "9:00 to 12:00" may be set as the time zone. Further, a period of 1 minute or 10 minutes less than 1 hour may be set as a time zone.

-Second embodiment-
A second embodiment of the in-vehicle device will be described with reference to FIGS. 11 to 12. In the following description, the same components as those in the first embodiment are designated by the same reference numerals, and the differences will be mainly described. The points not particularly described are the same as those in the first embodiment. The present embodiment is different from the first embodiment in that information such as a database is mainly stored in the server.

(Hardware configuration)
FIG. 11 is a diagram showing a hardware configuration of an in-vehicle device 1A, a vehicle 100A equipped with the in-vehicle device 1A, and a server 300 that communicates with the vehicle 100A. The difference in the hardware configuration of the in-vehicle device 1A from the in-vehicle device 1 is that the flash memory 5 is not provided. The difference between the vehicle 100A and the vehicle 100 is that the vehicle-mounted device 1A is provided instead of the vehicle-mounted device 1, and the vehicle-mounted communication unit 9A is provided. The in-vehicle communication unit 9A is a wireless communication device capable of communicating while the vehicle 100A is traveling, and corresponds to a wide area wireless communication standard such as 3G or 4G.

The server 300 includes a CPU 302, a ROM 303, a RAM 304, an HDD 305, and a server communication unit 309. The CPU 302 is a central arithmetic unit, and a program (not shown) stored in the ROM 303, which is a read-only memory, is expanded and executed in the RAM 304, which is a random access memory, to realize a function described later. The HDD 305 is a hard disk drive and corresponds to the flash memory 5 in the first embodiment. The CPU 302 provides access to the HDD 305, i.e., read and write, in response to a request from the vehicle 100A.

(Functional configuration)
FIG. 12 is a functional configuration diagram of the in-vehicle device 1A and the server 300. However, in FIG. 12, the information stored in the HDD 305 is also shown. The difference in the functional configuration of the in-vehicle device 1A from the in-vehicle device 1 is that the feature amount DB21, the action DB22, the POIDB23, the content DB24, and the sleep table 25 are not provided, and the IO interface 19Q is provided instead of the IO interface 19P. Is. The IO interface 19Q is realized by the CPU 2 and the vehicle-mounted communication unit 9A. The IO interface 19Q functions as an interface when each functional component of the CPU 2 accesses various information stored in the HDD 305 of the server 300. The IO interface 19Q transmits a read command or a write command received from each function component unit to the server 300, and returns a response received from the server 300 to each function component unit. Each functional component of the vehicle-mounted device 1A in the second embodiment performs the same operation as that in the first embodiment except for the IO interface 19Q, and obtains the same operation and effect.

The server 300 includes a server IO interface 319P as its function. The HDD 305 of the server 30 stores the information stored in the flash memory 5 in the first embodiment, that is, the feature amount DB 21, the action DB 22, the POIDB 23, the content DB 24, and the sleep table 25. Since the configuration of each information stored in the HDD 305 is the same as that of the first embodiment, the description thereof will be omitted. The server IO interface 319P is realized by the CPU 302 and the server communication unit 309. The server IO interface 319P operates the information stored in the HDD 305 based on the command received from the IO interface 19Q of the vehicle-mounted device 1A, and returns the result to the vehicle-mounted device 1A.

That is, in the present embodiment, the cooperative operation of the IO interface 19Q and the server IO interface 319P produces the same operation and effect as the IO interface 19P in the first embodiment.

According to the second embodiment described above, the following effects can be obtained in addition to the effects of (1) to (6) in the first embodiment.
(9) The in-vehicle device 1A includes an in-vehicle communication unit 9A that communicates with a server 300 having a feature amount DB 21 and a preference DB 22. The IO interface 19Q accesses the feature amount DB 21 and the preference DB 22 via the vehicle-mounted communication unit 9A. Therefore, a large amount of information can be stored in the server 300, which has less limitation on the storage area.

(Modified example of the second embodiment)
In the second embodiment, all the information stored in the flash memory 5 in the first embodiment is stored in the HDD 305. However, in the first embodiment, only a part of the information stored in the flash memory 5 may be stored in the HDD 305 of the server 300, and the rest may be stored in the flash memory 5 as in the first embodiment. That is, the feature amount DB 21, the action DB 22, the POIDB 23, the content DB 24, and the sleep table 25 may be stored in any of the flash memory 5 and the HDD 305.

Although the program is stored in the ROM 3, the program may be stored in the flash memory 5. Further, the in-vehicle device 1 may include an input / output interface (not shown), and a program may be read from another device when necessary via the input / output interface and a medium in which the in-vehicle device 1 can be used. Here, the medium refers to, for example, a storage medium that can be attached to and detached from an input / output interface, or a communication medium, that is, a network such as wired, wireless, or optical, or a carrier wave or digital signal that propagates in the network. In addition, some or all of the functions realized by the program may be realized by the hardware circuit or FPGA.

Each of the above-described embodiments and modifications may be combined. Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other aspects conceivable within the scope of the technical idea of the present invention are also included within the scope of the present invention.

1 ... In-vehicle device 11 ... Feature amount calculation unit 12 ... Feature amount recording unit 13 ... Configuration specification unit 14 ... Preference specification unit 15 ... Confirmation unit 16 ... Execution unit 17 ... Sleep determination unit 18 ... Preference detection unit 19 ... Preference recording unit 19P , 19Q ... IO interface 21 ... Feature database 22 ... Preference database 23 ... POI database 24 ... Content database 25 ... Sleep table 300 ... Server 319P ... Server IO interface

Claims (14)

A feature amount calculation unit that calculates the feature amount that is a feature of the occupants in the vehicle,
A feature amount DB interface unit that accesses the feature amount DB in which the feature amounts of the plurality of occupants are stored, and
And the feature quantity DB, and configuration specifying unit said feature amount calculation unit to identify the occupant's body before SL is a combination of an occupant of the vehicle based on the feature amount calculated,
A sleep determination unit that determines whether each occupant of the vehicle is in a sleep state or an awake state,
A preference DB interface unit that accesses a preference DB in which a history of preferences for each occupant configuration is stored in combination with time information.
The preference DB, the occupant configuration specified by the configuration specifying unit, and the preference specifying unit that specifies the preference of the entire occupant configuration based on the time information based on the current time are provided.
The configuration specifying unit excludes the occupant determined to be in the sleeping state by the sleep determining unit from the specified occupant configuration, and determines all the occupants in the awake state as the specific occupant configuration .
Before SL preference specifying unit, based on said specifying occupant's body by referring to the preference DB, vehicle unit for identifying the preference of the entire passenger configuration. In the in-vehicle device according to claim 1,
The preference as a whole of the occupant composition specified by the preference specifying unit is a genre of contents or a genre of POI.
When the preference specifying unit identifies the preference of the entire occupant composition, it is possible to reproduce the content belonging to the specified preference genre or set the POI belonging to the specified preference genre to the destination. An in-vehicle device further including a confirmation unit for inquiring to the occupant. In the in-vehicle device according to claim 1,
The preference as a whole of the occupant composition specified by the preference specifying unit is a genre of contents or a genre of POI.
Execution of reproducing the content belonging to the genre of the specified preference or setting the POI belonging to the genre of the specified preference to the destination based on the preference of the entire occupant composition specified by the preference specifying unit. An in-vehicle device further equipped with a unit. In the in-vehicle device according to claim 1,
The configuration specifying unit is an in-vehicle device that, when the occupant who has determined that the sleep determining unit is in the sleeping state shifts to the awake state, includes the occupant who has transitioned to the awake state in the specific occupant configuration and updates the configuration. In the in-vehicle device according to claim 1,
When the feature amount calculated by the feature amount calculation unit is not stored in the feature amount DB, the preference specifying unit refers to an occupant having the feature amount not stored in the feature amount DB as the specific occupant. An in-vehicle device that is excluded from the configuration and specifies the preference of the entire occupant configuration. In the in-vehicle device according to claim 5,
When the feature amount calculated by the feature amount calculation unit is not stored in the feature amount DB, the feature amount recording unit newly stores the feature amount calculated by the feature amount calculation unit in the feature amount DB. ,
A preference detection unit that detects the preference of the occupant and
The preference DB further includes a preference recording unit that stores the occupant configuration, time information based on the current time, and a combination of the occupant's preferences detected by the preference detection unit.
An in-vehicle device including the occupant whose feature amount is not stored in the feature amount DB in the occupant configuration recorded by the preference recording unit. In the in-vehicle device according to claim 1,
An in-vehicle device further comprising the feature amount DB and the preference DB. In the in-vehicle device according to claim 1,
An in-vehicle device communication unit that communicates with a server having the feature amount DB and the preference DB is further provided.
The feature amount DB interface unit and the preference DB interface unit are vehicle-mounted devices that access the feature amount DB and the preference DB via the vehicle-mounted device communication unit. A feature amount DB interface unit that accesses a feature amount DB in which a feature amount that is a feature of a occupant in a vehicle is stored for a plurality of the occupants of the vehicle, and a preference for each occupant configuration of the vehicle in combination with time information. This is a preference identification method executed in an in-vehicle device provided with a preference DB interface unit for accessing the preference DB in which the history of the above is stored.
To calculate the feature amount of the occupant and
And that based on the calculated the feature quantity identifying the occupant's body before SL is a combination of an occupant of the vehicle,
Determining whether each occupant of the vehicle is in a sleeping state or an awake state, and
Excluding the occupant determined to be in the sleeping state from the specified occupant configuration, all the occupants in the awake state are determined as the specific occupant configuration .
The preference DB, the determined the specific passenger configuration, and the Turkey to identify the preferences of the entire passenger configuration based on the time information based on the current time and,
Preference identification method including. In the method for specifying preference according to claim 9,
The preference as a whole of the occupant composition is a genre of contents or a genre of POI.
When the preference of the entire occupant composition is specified, the occupant is inquired whether the content belonging to the genre of the specified preference can be played back or the POI belonging to the genre of the specified preference can be set to the destination. Preference identification method including further. In the method for specifying preference according to claim 9,
The preference as a whole of the occupant composition is a genre of contents or a genre of POI.
A preference that further includes playing content belonging to the genre of the specified preference or setting a POI belonging to the genre of the identified preference to a destination based on the preference of the identified occupant composition as a whole. Specific method. In the method for specifying preference according to claim 9,
A preference specifying method in which when the occupant excluded from the occupant configuration shifts to the awake state, the occupant who has transitioned to the awake state is included in the specific occupant configuration and updated. In the method for specifying preference according to claim 9,
When the calculated feature amount is not stored in the feature amount DB, the occupant having the feature amount not stored in the feature amount DB is excluded from the specific occupant configuration, and the occupant configuration as a whole is used. A preference identification method for identifying preferences. In the method for specifying preference according to claim 13,
When the calculated feature amount is not stored in the feature amount DB, the calculated feature amount is newly stored in the feature amount DB, and
Detecting the occupant's taste and
The preference DB further includes storing the occupant configuration, time information based on the current time, and the detected combination of the occupant's preferences.
A method for identifying a preference including the occupant whose feature amount is not stored in the feature amount DB in the occupant configuration stored in the preference DB.

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