JP2008298522A - Navigation apparatus, and method and program for retrieval of navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation apparatus which enables its user to easily acquire data in a range which the user intends to, and to provide a method and program for retrieval of the navigation apparatus. <P>SOLUTION: A navigation unit 1a which has a retrieval data storage section 15 for storing retrieval data 16, and retrieving retrieval data 16 based on conditions presented by a driver, includes a navigation ECU 2 for identifying the position of its own vehicle, and retrieving retrieval data 16 around the own vehicle, and a face direction detection section 6 for detecting the direction of the face of the driver. Moreover, according to the position of the own vehicle and the direction of the driver's face, the navigation ECU 2 sets a range of narrowing of retrieval data 16, extracts retrieval data 16 corresponding to the narrowed range from among retrieval data 16 concerning the periphery of the own vehicle, and outputs retrieved retrieval data 16 on a display. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device, a navigation device search method, and a search program.

  Conventionally, navigation devices have a search database for searching for facilities, specific points, etc., search the database based on search conditions presented by the user, and output the searched data as a list etc. to the display To do.

  For example, if a database is searched under conditions such as “gas station”, a huge amount of data is output. Normally, in addition to the above conditions, the name of the area to be searched is input and the conditions such as limiting the area are set. Append. However, even in this case, since all the facilities and the like existing in the limited area are searched, information that is less necessary for the user is output.

When data having a low necessity is output in this way, there are problems that the number of operations for further narrowing down the data increases and that it takes time to reach the necessary information. On the other hand, Patent Document 1 describes a navigation device that searches for surrounding facilities existing in the traveling direction of the host vehicle.
JP 2006-266757 A

  However, in the device described in Patent Document 1, it is possible to search for facilities existing in a predetermined range based on the traveling direction, but the driver depends on the traveling direction of the own vehicle at the time of the search. When the direction of travel is changed or when it is desired to search for facilities or the like other than the predetermined range, the search range is not appropriate.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a navigation device, a navigation device search method, and a search program that can easily acquire data in a range intended by a user. It is in.

  In order to solve the above problem, the invention described in claim 1 is provided with a search data storage means for storing search data, and in a navigation device for searching for the search data based on a condition presented by a driver. A vehicle position specifying means for specifying the vehicle position; a periphery search means for searching the search data around the vehicle based on the vehicle position; a face direction detecting means for detecting the driver's face direction; The range setting means for setting the search data narrowing range according to the vehicle position and the driver's face orientation, and the search data related to the periphery of the host vehicle searched by the peripheral search means, The gist is provided with data extraction means for extracting the corresponding search data, and output control means for outputting the extracted search data to the output means.

  The gist of the invention according to claim 2 is that, in the navigation device according to claim 1, the range setting means sets a predetermined angle range including a driver's face direction as the narrowing range.

According to a third aspect of the present invention, in the navigation device according to the first or second aspect, the face direction detecting means detects the direction of the driver's face in the vertical direction, and according to the direction of the face in the vertical direction. The gist is to set the length of the narrowing range.

  According to a fourth aspect of the present invention, in the navigation device according to any one of the first to third aspects, after the search data around the host vehicle is searched by the peripheral search means, the presence or absence of the driver's utterance is checked. When the utterance by the driver is detected, voice recognition means for analyzing the utterance content is further provided, and when the utterance content is a refinement command, the range setting means is configured to determine the vehicle position and the driver. The narrowing range of the search data is set according to the orientation of the face, and the data extraction means narrows down the search data based on the narrowing range.

  The invention according to claim 5 is a navigation device that searches for the search data based on a condition presented by a driver using search data storage means for storing search data and control means for searching for the search data. In the search method, the control means searches the search data around the host vehicle based on the host vehicle position, detects the driver's face direction, and sets the driver's face direction and the driver's face direction. A narrowing range is set accordingly, and the search data corresponding to the narrowing range is extracted from the search data relating to the vicinity of the searched vehicle, and the extracted search data is output to an output unit. And

  The invention according to claim 6 is a navigation device that searches for the search data based on a condition presented by a driver using search data storage means for storing search data and control means for searching for the search data. In the search program, the control means includes: a vehicle position specifying means for specifying the vehicle position; a periphery search means for searching the search data around the vehicle based on the vehicle position; and a direction of the driver's face A direction-of-face detection unit for detecting the direction of the vehicle, a range setting unit for setting a narrowing range of the search data according to the vehicle position and the direction of the driver's face, and the periphery of the vehicle searched by the periphery search unit Data extraction means for extracting the search data corresponding to the narrowing range from search data relating to the output, and output control means for outputting the extracted search data to the output means And summarized in that to to function.

  According to the first aspect of the present invention, the navigation device sets the narrowing range according to the direction of the driver's face when the surrounding search is performed, and the facility or point included in the narrowing range or the traffic information Narrow down to etc. For this reason, since data can be narrowed down according to the direction of the driver's face, data in a range intended by the user can be easily obtained.

  According to the invention described in claim 2, since the narrowing-down range is a predetermined angle range including the direction of the driver's face, the driver wants to accurately determine the range that the driver wants to search and extract highly necessary data. be able to.

  According to the invention described in claim 3, since the length of the narrowing range is set according to the direction of the driver's face in the vertical direction, the narrowing is performed when the driver is looking at a relatively far place. The search range can be set short when the range is set long and when a relatively close place is seen.

  According to the fourth aspect of the present invention, when the driver's utterance content is a narrowing command, the narrowing range is set. For this reason, since it is not necessary to input the narrow-down condition by manual operation, information that the driver wants to search can be narrowed down only by speaking and face direction.

According to the fifth aspect of the present invention, when a surrounding search is performed, a narrowing range is set according to the orientation of the driver's face, and narrowed down to facilities or points included in the narrowing range or traffic information. For this reason, since data can be narrowed down according to the direction of the driver's face, data in a range intended by the user can be easily obtained.

  According to the invention described in claim 6, when a surrounding search is performed, a narrowing range is set according to the direction of the driver's face based on the search program, and the facility, point or traffic included in the narrowing range We narrow down to information. For this reason, since data can be narrowed down according to the direction of the driver's face, data in a range intended by the user can be easily obtained.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the configuration of the navigation system 1 of the present embodiment.
The navigation system 1 includes various sensors, a touch panel display 35, and the like, and a navigation unit 1a as a navigation device that transmits and receives data. The navigation unit 1a has a navigation ECU (hereinafter simply referred to as a navigation ECU 2) mounted on the host vehicle C (see FIG. 7). The navigation ECU 2 corresponds to own vehicle position specifying means, surrounding search means, face direction detection means, range setting means, data extraction means, control means, and output control means.

The navigation ECU 2 inputs a position detection signal indicating coordinates such as latitude and longitude received by a GPS (Global Positioning System) antenna 30 and calculates the absolute position of the host vehicle C by radio wave navigation. In addition, vehicle speed pulses and angular velocities are respectively input from the vehicle speed sensor 31 and the gyro sensor 32 provided in the host vehicle via the vehicle side I / F 3. The navigation ECU 2 calculates a relative position from the reference position by autonomous navigation using vehicle speed pulses and angular velocities, and identifies the own vehicle position in combination with the absolute position calculated by radio wave navigation.

  The navigation system 1 includes a map data storage unit 10. The map data storage unit 10 is an external storage medium such as an internal hard disk or an optical disk. In this map data storage unit 10, each route network data for searching for a route to the destination (hereinafter referred to as route data 11) and each for outputting a map screen 35a to a touch panel display 35 as an output means. Map drawing data 12 is stored.

  The route data 11 is data relating to roads in the mesh that divides the whole country. As shown in FIG. 2A, the route data 11 includes a mesh ID 11a that is an identifier of each mesh and a link ID 11b that indicates an identifier of each link in the mesh. Nodes indicate intersections, interchanges, road end points, and the like, and links are data elements that connect the nodes.

  The link ID 11b is associated with node coordinates 11c of a node indicating the start and end points of the link, a road type 11d indicating the type of road, a link cost 11e for route search, and the like.

  Further, the map drawing data 12 is stored for each mesh obtained by dividing a map of the whole country, and is divided for each layer from a wide area map to a narrow area map. As shown in FIG. 2B, the map drawing data 12 includes a mesh ID 12a, background data 12b for drawing roads, urban areas, etc., shape interpolation data, road data 12c indicating road shapes such as road widths, and the like. is doing.

The navigation system 1 includes a map drawing processing unit 4 (see FIG. 1). The map drawing processing unit 4 reads map drawing data 12 for drawing a map around the vehicle position from the map data storage unit 10 and generates output data. Further, a video signal based on the output data is output to the touch panel display 35, and a map screen 35a as shown in FIG. 1 is displayed. Further, the map drawing processing unit 4 superimposes the host vehicle index 35b on a position corresponding to the current position of the host vehicle C in the map screen 35a.

  The navigation ECU 2 also includes a traffic information receiving unit 37. The traffic information receiving unit 37 is installed in the vicinity of a road, for example, and receives traffic information and the like around the beacon and the like constituting VICS (registered trademark, Vehicle Information and Communication System). When the navigation ECU 2 receives traffic information from the traffic information receiving unit 37, the navigation ECU 2 temporarily stores the traffic information in a built-in memory or the like. Further, based on this traffic information, a traffic jam section is highlighted on the map screen 35a or a recommended route is changed. The memory for storing traffic information corresponds to search data storage means.

  Further, the navigation ECU 2 inputs the contact position of the user's finger that has touched the touch panel from a controller (not shown) of the touch panel display 35. In addition, the navigation ECU 2 operates each time when a voice input button B provided adjacent to the touch panel display 35 or a voice input button (not shown) provided on the steering column or the like for performing voice recognition is operated. A detection signal indicating that an operation has been performed is input from the voice input button B.

  When the navigation ECU 2 inputs a voice recognition execution command by a touch panel operation or a push button of the voice input button B, the navigation ECU 2 controls the voice recognition unit 5 as voice recognition means and waits for the utterance by the driver (user). Note that when searching for facilities, points, and the like by voice recognition, the driver speaks in that direction when he wants to narrow down the search data in the direction relative to the own vehicle C.

  The voice recognition unit 5 includes a voice recognition LSI, a voice recognition database, and the like (not shown). The voice recognition unit 5 inputs a voice signal based on the driver's utterance from a microphone 34 (see FIG. 1) provided in the passenger compartment. The voice recognition database stores an acoustic model, a recognition dictionary, a language model, and the like. Using the acoustic model, the speech recognition unit 5 associates the feature amount of the speech with the phoneme, collates the recognition dictionary, and searches for a word associated with the detected phoneme sequence. Furthermore, the connection probability and the dependency relation between the detected words are verified by the language model. Then, when the probability that each word is connected is high, the recognition result is determined. When the recognition result is confirmed, the voice recognition unit 5 outputs the recognition result to the navigation ECU 2, and the navigation ECU 2 outputs a command based on the recognition result to various control circuits.

  Further, the navigation ECU 2 searches for facilities, points, and the like using the search data 16 stored in the search data storage unit 15 as search data storage means. As shown in FIG. 3, the search data 16 has a management header 16a, genre definition data 16b, search target data 16c, and coordinate data 16d. The management header 16a is management data. The genre definition data 16b is data such as a genre for searching for facilities such as “airport”, “gas station”, “famous place / historic site” and a specific point, an address, a telephone number, and a postal code. The search target data 16c is data such as a facility name and a spot name. The coordinate data 16d is data indicating the coordinates of the facility or point.

  When the navigation ECU 2 acquires search conditions such as a genre and an address designated by the driver by touch panel operation or voice recognition, the navigation ECU 2 searches the search data storage unit 15 based on the search conditions. Further, when “peripheral search” is designated by the driver's operation, the navigation ECU 2 searches for a facility or a specific point around the vehicle position. At this time, the navigation ECU 2 uses the search data 16 to search for facilities or specific points within a predetermined distance from the vehicle position based on the latitude and longitude of the vehicle position. Alternatively, the mesh around the vehicle position is specified based on the ID of the mesh including the vehicle position, and the facility or specific point included in the mesh is searched.

  When the search data 16 around the vehicle position is searched, a list is created using the search data 16 extracted by the search, and a search list screen 35p as shown in FIG. 4 is displayed on the touch panel display 35, for example. On the search list screen 35p, facility names and the like included in the extracted search target data 16c are displayed as a list L. These facilities and points displayed in the list are facilities or points searched without specifying a direction or the like. In addition, next to the search list screen 35p, a direction display portion 35q is displayed that indicates in which direction each facility or each point is seen from the vehicle position. The screen showing the peripheral search result may be a screen having a display format other than the search list screen 35p.

  As shown in FIG. 1, the navigation unit 1 a includes an audio processor 7 and a face direction detection unit 6. The sound processor 7 stores sound data and the like, and outputs various sounds such as traffic jam information from the speaker 36.

  The face direction detection unit 6 receives a detection signal indicating the face direction from the face direction detection sensor 33 provided in the host vehicle C. The face direction detection sensor 33 is constituted by a camera in this embodiment. The face direction detection sensor 33 is attached, for example, in the passenger compartment so that the face of the driver D seated in the driver's seat S (see FIG. 6) can be photographed. The face direction detection unit 6 performs the horizontal direction (x direction and y direction in FIG. 6) of the face of the driver D and the vertical direction (known as image processing) based on the image data acquired by the face direction detection sensor 33. The direction in the z direction in FIG. 6 is detected.

  In the case of detecting the horizontal direction, for example, the face of the driver D facing the reference direction Di shown in FIG. 5 is photographed and stored in advance in the memory as a template. Further, when the face direction detection sensor 33 newly captures an image, the newly acquired image data is compared with the template to calculate the horizontal direction of the face of the driver D. Alternatively, edge detection or feature point extraction processing may be performed on the image data obtained by capturing the face of the driver D to detect the face direction. At this time, as shown in FIG. 6, the face direction detection unit 6 calculates a relative angle θ1 or a relative direction (vector) of the face direction D1 with respect to the reference direction Di. When the relative angle θ1 or relative orientation of the face direction D1 is calculated, the face direction detection unit 6 outputs the relative angle θ1 or relative orientation to the navigation ECU 2.

  Similarly, a known image processing method is used to detect the face direction in the vertical direction. For example, when image data is newly input from the face direction detection sensor 33, the image data is compared with a template obtained by photographing the face of the driver D facing the reference direction, and the depression angle or elevation angle of the face is calculated. At this time, the navigation ECU 2 calculates a relative angle θ3 with respect to the face direction (Di direction in the figure) of the driver D facing the reference position as shown in FIG. In a state in which the driver D is looking relatively far, the relative angle θ3 is higher in the vertical direction (z direction) than the reference direction Di, that is, the elevation angle. In a state where the driver D is looking near the host vehicle C, the relative angle θ3 is a vertical direction (z direction) lower than the reference direction Di, that is, a depression angle.

  The navigation ECU 2 uses the relative angles θ1, θ3 or the relative orientation acquired from the face direction detection unit 6 to set a narrowing range for narrowing down the search result by the above-described peripheral search according to the direction. Specifically, the navigation ECU 2 acquires the host vehicle position and the traveling direction of the host vehicle C with respect to the road surface, and determines the direction of the face of the driver D based on the host vehicle position and the traveling direction of the host vehicle C. Conversion to an absolute direction with respect to the axis of the coordinate system (X axis in FIG. 7). At this time, as shown in FIG. 7, for example, the direction of the host vehicle C is added to the horizontal relative angle θ1 or the relative direction acquired from the face direction detection unit 6, and the face direction of the driver D is absolute. Calculated as the angle θ2 or absolute azimuth.

Further, the navigation ECU 2 calculates a fan-shaped target area A having a predetermined angle range φ (for example, 45 °) centered on the absolute position of the face direction D1 with the vehicle position as the center point. Furthermore, using the route data 11, an area within a predetermined distance L1 from the vehicle position along the road in the target area A is set as a narrowing range Z2. At this time, the navigation ECU 2 determines the predetermined distance L1 when the relative angle θ3 is an elevation angle (upward) with respect to the reference direction (Di direction in FIG. 8) based on the relative angle θ3 indicating the face direction in the vertical direction. Is set relatively long (for example, 5 km), and when it is a depression angle (downward), the predetermined distance L1 is set to be relatively short (for example, 2 km).

  When the narrowing range Z2 is set in this way, the navigation ECU 2 narrows down the facilities or points searched by the peripheral search and the traffic information based on the narrowing range Z2. At this time, the search data 16 included in the narrow-down range Z2 is narrowed down using the coordinate data 16d of the search data 16 already extracted by the peripheral search. Further, when narrowing down the traffic information, it is determined whether the traffic information acquired from the traffic information receiving unit 37 and stored in the navigation ECU 2 includes traffic jam information and guidance information included in the narrowed-down range Z2. Judgment is made based on the data included in the information, and if there is applicable traffic information, the traffic information is extracted.

  Next, the processing procedure of this embodiment is demonstrated according to FIG. The navigation ECU 2 acquires the current position of the host vehicle C (step S1). Further, it is determined whether or not a peripheral search is designated by a touch panel operation, voice recognition, or the like (step S2).

  If it is determined that the peripheral search is designated (YES in step S2), the peripheral search for searching for a facility or a spot around the vehicle position based on the vehicle position is performed according to the procedure described above (step S3). Further, the facilities or points extracted as a result of the peripheral search are displayed as a list L on the search list screen 35p (step S4). In addition, when the traffic information around the own vehicle position is searched, the traffic information is displayed on the screen together with the location name, or is displayed along the road displayed on the map screen 35a.

  Further, the navigation ECU 2 determines whether or not the operation of the voice input button B has been performed (step S5). While the voice input button B is not being operated (NO in step S5), the display of the list L is continued. At this time, when a touch panel operation for returning to the map screen 35a is performed, the interruption instruction is executed.

  If it is determined that the voice input button B has been operated (YES in step S5), the navigation ECU 2 detects the face direction of the driver from the face direction detection unit 6 (step S6). In the present embodiment, as described above, the horizontal relative angles θ1 and θ3 or the relative orientation with respect to the reference direction are acquired.

  Further, the navigation ECU 2 determines whether or not there is an utterance instructing the direction by the driver D (step S7). Specifically, the speech recognition unit 5 analyzes the utterance content of the driver D, and determines whether or not it matches a command of a predetermined narrowing-down command. For example, when the command for instructing the direction is “this direction”, the voice recognition unit 5 determines whether the utterance content of the driver D matches “this direction”.

  As a result of the speech recognition, when the utterance content indicating the direction is not detected (NO in step S7), it is determined whether or not a predetermined time (for example, 10 seconds) has elapsed since the operation of the speech input button B (step S8). ). If it is determined that the predetermined time has elapsed (YES in step S8), the voice input waiting state is canceled (step S9), and the process returns to step S4. If it is determined that the predetermined time has not elapsed (NO in step S8), the process returns to step S6, and the face orientation is detected again.

On the other hand, as a result of the speech recognition, when the utterance content indicating the direction is detected (YES in step S7), a narrowing range Z2 is set (step S10). At this time, as described above, the absolute angle θ2 or the absolute azimuth is calculated by adding the absolute direction of the host vehicle C to the horizontal relative angle θ1 or the relative azimuth indicating the direction of the face of the driver. Further, as shown in FIG. 7, a fan-shaped target area A having a predetermined angle range φ (for example, 45 °) around the face direction D1 is calculated. Further, using the route data 11, an area within the predetermined distance L1 along the road included in the target area A is set as a facility, a specific point, and a traffic information narrowing range Z2. At this time, the predetermined distance L1 is set based on a relative angle θ3 indicating the face direction in the vertical direction.

  In addition, the navigation ECU 2 determines whether there are facilities, points, and traffic information included in the narrowing range Z2 among facilities, points, and traffic information included in the list L (step S11). When it is determined that there is no facility, point, or traffic information included in the narrowing range Z2 (NO in step S11), the direction specified by the driver D and a search indicating that there is no facility around the host vehicle The result is displayed on the touch panel display 35 (step S12).

  On the other hand, if it is determined that there are facilities, points, and traffic information included in the narrowing range Z2 (YES in step S11), the search data 16 of the facilities, points, and traffic information included in the narrowing range Z2 is extracted (step S11). S13). Further, a list L of the extracted facilities, points, and traffic information is displayed on the touch panel display 35 (step S14). As a result, for example, a narrowing result screen 35t as shown in FIG. 5 is displayed. In this narrowing-down result screen 35t, facilities, points, and traffic information indicated by the driver D according to the direction of the face are displayed as a list L. Therefore, the driver D does not narrow down the data by manual operation, but the necessary information. Can be confirmed.

When the process is thus completed, the process returns to step S1 and the above-described process is repeated.
According to the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the navigation ECU 2 detects the direction of the face of the driver D by the face direction detection unit 6. Further, when performing a peripheral search for searching facilities or specific points or traffic information around the vehicle based on the vehicle position, the search data is narrowed down according to the vehicle position and the direction of the face of the driver D. A range Z2 is set, and facilities, points, or traffic information corresponding to the narrowed range Z2 are extracted from facilities, points, or traffic information searched for in the vicinity. Further, the extracted search data 16 is displayed on the touch panel display 35. For this reason, when narrowing down the data retrieved by the peripheral search, the driver D does not need to perform a manual operation, and can narrow down only by changing the direction of the face. Therefore, it is possible to reduce the time and effort of the driver D compared to performing the narrowing operation by manual operation.

  (2) In the above embodiment, the navigation ECU 2 sets the predetermined angle range φ including the face direction of the driver D as the narrowing range Z2. For this reason, the direction which the driver | operator D wants to search can be judged accurately, and data with high necessity can be extracted.

  (3) In the above embodiment, the navigation ECU 2 detects the face direction of the driver D in the vertical direction by the face direction detection unit 6 and sets the length of the narrowing range Z2 according to the face direction in the vertical direction. I tried to do it. For this reason, the narrowing range Z2 can be set long when the driver D is looking at a relatively distant place, and the narrowing range Z2 can be set short when the driver D is looking at a relatively close place. Therefore, it is possible to accurately determine the range that the driver D wants to search, and extract highly necessary data.

  (4) In the above embodiment, when the speech recognition unit 5 detects and analyzes the utterance of the driver D and the utterance content is a predetermined narrowing command, the vehicle position and the direction of the face of the driver D Accordingly, the narrowing range Z2 of the search data 16 is set, and the search data 16 is narrowed down based on the narrowing range Z2. For this reason, since it is not necessary to input the narrowing-down condition by manual operation, the information that the driver D wants to search can be narrowed down only by the utterance and the face direction.

In addition, you may change the said embodiment as follows.
In the above embodiment, the face direction detection sensor 33 is a camera, but other sensors may be used.

In the above embodiment, the horizontal direction and the vertical direction of the driver's face are detected, but only the horizontal direction may be detected.
In the above embodiment, the traffic information receiving unit 37 receives traffic information transmitted from the VICS, but may receive traffic information and guidance information from other systems. For example, RDS / TMC (Radio Data System / Traffic Message Channel) using FM multiplex broadcasting, road-to-vehicle communication for communication between a roadside device installed in the vicinity of a road and an in-vehicle device, or between each in-vehicle device You may make it receive traffic information and guidance information by vehicle-to-vehicle communication which performs communication.

  In the above embodiment, the search result is displayed on the touch panel display 35. However, the voice processor 7 as the output control means may output the voice from the speaker 36 as the output means to guide the search result. .

  In the above embodiment, the direction in which the driver is looking may be detected using line-of-sight detection means that detects the position of the driver's D pupil and the like. Then, the search target range may be set according to the vehicle position and the direction of the driver's line of sight.

  In the vicinity search (step S3), the search may be performed by further specifying the genre.

The block diagram of the navigation system of this embodiment. (A) is route data, (b) is explanatory drawing of map drawing data. Explanatory drawing of search data. The screen figure of the search list screen displayed on a display. The screen figure of a refinement result screen. Explanatory drawing of the process which detects the direction of a driver | operator's horizontal face. Explanatory drawing of the process which converts the relative direction which shows direction of a face into the absolute direction with respect to a road surface. Explanatory drawing of the process which detects the direction of a driver | operator's vertical face. The flow which shows the process sequence of this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1a ... Navigation unit as navigation device, 2 ... Own vehicle position specifying means, surrounding search means, face direction detecting means, range setting means, data extracting means, control means, navigation ECU as output control means, 5 ... voice recognition Voice recognition unit as means, 7 ... Voice processor as output control means, 15 ... Search data storage part as search data storage means, 16 ... Search data, 35 ... Touch panel display as output means, 36 ... Output means Speaker, D ... driver, Z2 ... narrowing range.

Claims (6)

In a navigation device comprising search data storage means for storing search data, and searching for the search data based on conditions presented by a driver,
Own vehicle position specifying means for specifying the own vehicle position;
Peripheral search means for searching for the search data around the host vehicle based on the host vehicle position;
A face direction detecting means for detecting the direction of the driver's face;
Range setting means for setting a narrowing range of the search data according to the vehicle position and the direction of the driver's face;
Data extraction means for extracting the search data corresponding to the narrowing range from search data related to the periphery of the host vehicle searched by the periphery search means;
A navigation apparatus comprising: output control means for outputting the extracted search data to output means. The navigation device according to claim 1, wherein
The navigation apparatus according to claim 1, wherein the range setting means sets a predetermined angle range including a driver's face direction as the narrowing range. The navigation device according to claim 1 or 2,
The navigation apparatus according to claim 1, wherein the face direction detection unit detects the direction of the driver's face in the vertical direction and sets the length of the narrowing range according to the face direction in the vertical direction. The navigation device according to any one of claims 1 to 3,
After searching the search data around the host vehicle by the surrounding search means, it further comprises voice recognition means for determining whether or not the driver utters and analyzing the content of the utterance when the driver utterance is detected. ,
When the utterance content is a refinement command, the range setting means sets the refinement range of the search data according to the own vehicle position and the direction of the driver's face, and the data extraction means A navigation apparatus, wherein the search data is narrowed down based on a narrowing range. In a search method for a navigation device that searches for search data based on conditions presented by a driver, using search data storage means for storing search data and control means for searching for the search data,
The control means is
Based on the own vehicle position, the search data around the own vehicle is searched, the direction of the driver's face is detected, and the narrowing range is set according to the own vehicle position and the driver's face direction,
A search method for a navigation apparatus, comprising: extracting the search data corresponding to the narrowed-down range from the search data related to the vicinity of the searched vehicle, and outputting the extracted search data to an output unit. In a search program for a navigation device that searches for search data based on conditions presented by a driver using search data storage means for storing search data and control means for searching for the search data,
The control means;
Own vehicle position specifying means for specifying the own vehicle position;
Peripheral search means for searching for the search data around the host vehicle based on the host vehicle position;
A face direction detecting means for detecting the direction of the driver's face;
Range setting means for setting a narrowing range of the search data according to the vehicle position and the direction of the driver's face;
Data extraction means for extracting the search data corresponding to the narrowing range from search data related to the periphery of the host vehicle searched by the periphery search means;
A search program for a navigation apparatus, which causes the extracted search data to function as output control means for outputting to an output means.

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