JP2007163226A - Navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation apparatus which can prevent an arrival time from being delayed owing to searching. <P>SOLUTION: When search conditions indicating a visit purpose and an arrival time are input (S20), the moving speed of a vehicle is set (S30), and information on various kinds of facilities stored in a data storage device of the navigation apparatus (facility specific information) is searched for on the basis of the visiting purpose and the arrival time (S40). When the number of the pieces of facility specific information extracted on the basis of the search result by S40 (an extracted information number) falls below a predetermined extracted number (for example, ten) (S50), a voice indicating the extracted facility specific information in order of increasing a distance from the present position of the vehicle is output (S60). When a voice indicating a facility to be determined as a destination out of the facilities output by voice is given by a driver (S80), the facility is set as the destination to start route guidance (S90). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a navigation device that searches a destination desired by a driver of a vehicle and guides a route to the searched destination.

  Conventionally, in a navigation device that provides route guidance to a destination for a vehicle driver, when the destination is not clearly determined, various facilities (parking lots, restaurants, tourist facilities, etc.) and regional A device having a function (so-called search function) for setting a place desired by the driver as a destination by causing the driver to input search conditions such as limitation is known.

Some navigation devices having such a search function operate while looking at information displayed on the display screen of the navigation device, for example, “Restaurants that can be reached within business hours”, for example, visit purpose (here Then, by inputting search conditions for a restaurant and an arrival time (here, business hours (that is, the last order time)), a desired destination can be searched (for example, Patent Document 1). reference).
JP-A-10-160491

  However, in the navigation device of Patent Document 1, many search results are output when there are few search conditions. For this reason, in order to determine one destination from many search results, it is necessary to further add search conditions and narrow down the search results. That is, it takes time to search for the destination.

  Furthermore, in order to perform a search, the driver needs to watch the display screen of the navigation device. That is, the driver must stop the vehicle until the destination is determined by the search.

  Therefore, if the departure is made after the destination is determined by the search, the arrival time is delayed by the time required for the search, and as a result, the desired destination may not be reached within business hours. there were.

  The present invention has been made in view of these problems, and an object of the present invention is to provide a navigation device that can suppress the arrival time from being delayed for a search.

  In the navigation device of the present invention made to achieve the above object, the current position detecting means detects the current position of the host vehicle. The moving speed setting means sets the moving speed of the host vehicle. The current time acquisition means acquires current time information indicating the current time. In addition, the facility information acquisition means acquires a plurality of facility specifying information including at least facility location information related to the location of the search target facility that is a facility to be searched and facility content information related to the content of the search target facility. The voice input means inputs voice, the voice output means outputs voice, and the input voice specifying means performs voice recognition processing on the voice input to the voice input means, thereby specifying the content of the input voice. .

  The search means includes the current position detected by the current position detection means and the movement when the content of the voice specified by the input voice specification means is a first search condition that is a search condition indicating the purpose of visit and arrival time. Based on the movement speed set by the speed setting means and the current time information acquired by the current time acquisition means, the facility specifying information acquired by the facility information acquisition means is searched, and based on this search result, the search condition The condition matching facility that is the search target facility that matches is extracted.

The first facility output means causes the sound output means to output a sound indicating the facility specifying information of the condition matching facility extracted by the search means when a predetermined output condition set in advance is satisfied.
The destination setting means uses the condition matching facility as the destination when the content of the voice specified by the input voice specifying means indicates one of the condition matching facilities extracted by the search means. Set.

  Thus, in the navigation device of the present invention, when the vehicle is departed after inputting the visit purpose and arrival time as the search conditions, the vehicle is based on the current position of the vehicle while traveling, the moving speed of the vehicle, and the current time. The search target facility that matches the search conditions (that is, the purpose of the visit and the arrival time) is narrowed down. That is, the search can be performed while the vehicle is running.

  When the predetermined output condition is satisfied, the information indicating the facility that matches the search condition is output by voice from the voice output means, so that the driver indicates the desired facility from the information indicating the facility output by voice. When a word is spoken, the facility is set as a destination and route guidance is started. That is, the output of the search result and the input of the destination can be performed via voice. That is, since the driver does not need to watch the display screen of the navigation device, the destination can be set even while the vehicle is traveling.

  Therefore, the waste that the vehicle must be stopped until the destination is set can be omitted. For this reason, it is possible to suppress the occurrence of a situation in which the arrival time is delayed by the time required for the search and the desired destination cannot be reached within business hours.

  In the search means, specifically, for example, the visit purpose extracting means extracts the facility specifying information including the facility content information matching the visit purpose from the facility specifying information acquired by the facility information acquiring means. After that, the travel time calculation means sets the travel speed from the current position detected by the current position detection means to the position specified by the facility position information included in the facility specification information extracted by the visit purpose extraction means. It calculates based on the moving speed set by the means. Further, the arrival time calculation means calculates the arrival time based on the travel time calculated by the travel time calculation means and the current time information acquired by the current time acquisition means. Then, the facility determining means, when the arrival time calculated by the arrival time calculating means is before the arrival time indicated by the first search condition, the search target facility indicated by the facility specifying information extracted by the visit purpose extracting means Is a condition-matching facility.

  The moving speed setting means may set a preset fixed value (for example, 30 km / h) as the moving speed, an average value of the vehicle speed measured from the time of departure to the current time, or a predetermined time ( For example, an average value of vehicle speeds measured from before 5 minutes to the current time may be set as the moving speed.

  The predetermined output condition may be that the number of condition matching facilities extracted by the search means is equal to or less than a predetermined extraction number set in advance. In this case, the predetermined number of extractions may be set to a number (for example, 10) that does not take much time even if all the condition-matching facilities extracted by the search means are output by voice.

  Alternatively, the predetermined output condition indicates that the voice content specified by the input voice specifying means indicates a command set in advance for causing the voice output means to output a voice indicating the facility specifying information of the condition matching facility. It is good. In this case, the driver can acquire the search result at the timing he desires.

  In addition, when the content of the voice specified by the input voice specifying means is a second search condition indicating a search condition different from the first search condition, the search means further sets the second search condition in addition to the first search condition. Additional search may be performed to extract condition matching facilities.

  In this case, it is possible to narrow down the condition-matching facilities by performing the search by adding the second search condition rather than only the first search condition. That is, it is possible to shorten the time required to determine the destination by searching.

  In the navigation device of the present invention, a plurality of first search condition information indicating different search conditions, and a second search condition associated with the first search condition information corresponding to each of the first search condition information. Search condition information storage means for storing the search condition information for each first search condition information is provided, and the search means stores the first search condition information when the first search condition matches the search condition indicated by the first search condition information. In addition to the one search condition, a search is performed by adding a third search condition indicated by the second search condition information corresponding to the first search condition information, and a condition matching facility is extracted. The means stores the facility specifying information regarding the condition matching facility extracted by the searching means based on the result of adding the third search condition, and the second facility output means is specified by the input voice specifying means. sound If the content of the item indicates the third search condition, the facility specifying information regarding the condition matching facility searched under the third search condition is extracted from the extracted facility information storage means, and the sound indicating the facility specifying information is output as a voice You may comprise so that a means may output.

  The search means further includes second search condition information corresponding to the first search condition information in addition to the second search condition when the second search condition matches the search condition indicated by the first search condition information. A third search condition indicated by the above may be added to perform a search, and a condition matching facility may be extracted.

  That is, if the search means has already performed a search under the third search condition before the driver requests a search under the third search condition, the driver immediately obtains the search result under the third search condition. Therefore, it is possible to shorten the time required to determine the destination by searching.

  In the navigation device of the present invention, the preference information storage unit that stores the preference information indicating the user's preference and the correspondence relationship between the first search condition information and the second search condition information are stored in the preference information storage unit. And correspondence setting means for setting based on the preference information.

  That is, since the third search condition is set based on the user's preference, the driver is more likely to request a search using the third search condition. In other words, when the driver requests a search under a certain search condition, the possibility that the search means has already performed a search under this search condition is increased, and the time required for determining the destination by the search is further increased. Can be shortened. Moreover, it can suppress that a search means performs the search by a 3rd search condition wastefully.

  In addition, the navigation device of the present invention allows the user to input the search condition when the state in which the voice indicating the search condition is not input to the voice input means continues for a predetermined non-input time. Search condition guidance means for causing the voice output means to output a guidance voice for prompting the user may be provided.

  In other words, the output of the guidance voice increases the possibility that the driver adds a search condition for narrowing down the condition matching facility. That is, it is possible to shorten the time required to determine the destination by searching.

In addition, you may make it propose from the navigation apparatus the search conditions which are easy to narrow down | match a condition matching facility.
By the way, when waiting for a search with a long search time to end, the driver may be annoyed by thinking “when the search ends”.

  Therefore, the navigation device of the present invention includes a search time calculating means for calculating a predicted search time required for a search based on the search condition when the content of the voice specified by the input voice specifying means indicates a search condition, and a search Search time guidance means for outputting a voice indicating the predicted search time calculated by the search time calculation means to the voice output means when the predicted search time calculated by the time calculation means is longer than a predetermined search time set in advance. May be provided.

  In this case, the driver can know the predicted search time in advance. Therefore, even when the search time is long, the driver can grasp to some extent the time when the search is completed, so that the driver is not frustrated.

(First embodiment)
A first embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a navigation device 1 according to a first embodiment to which the present invention is applied.

  As shown in FIG. 1, the navigation device 1 according to the first embodiment includes a position detector 21 that detects a current position of a vehicle, a vehicle speed sensor 22 that detects a traveling speed of the vehicle, and an external device connected to a packet communication network. An external communicator 23 that communicates with the data, a data storage device 24 that can store map data and various information, an operation switch group 25 for inputting various instructions from the user, a map display screen, a TV screen, etc. A display device 26 for performing various displays, a voice output unit 27 for outputting various guidance voices, a microphone 28 for outputting an electrical signal based on voice spoken by the driver, and a calendar (year / month / day) And a calendar clock 29 capable of measuring time (hours, minutes and seconds), the above-described position detector 21, vehicle speed sensor 22, external communication device 23, operation switch group 25, microphone 28 and calendar clock. It executes various processes in response to an input from the click 29, the external communication device 23, the data storage device 24, and a control unit 20 for controlling the display device 26 and the audio output unit 27.

  Among these, the position detector 21 receives a radio wave transmitted from an artificial satellite for GPS (Global Positioning System) via a GPS antenna and detects a position, a direction, and the like of the vehicle, and in addition to the vehicle. Provided with a gyroscope 21b for detecting the magnitude of the rotational motion, a distance sensor 21c for detecting a distance from acceleration in the longitudinal direction of the vehicle, and a geomagnetic sensor 21d for detecting a traveling direction from geomagnetism. . Each of the sensors 21a to 21d has an error having a different property, and is configured to be used while complementing each other. Depending on the accuracy, a part of the sensors described above may be used, or a steering rotation sensor, a wheel sensor of each rolling wheel, or the like may be used.

  The external communication device 23 is configured to transmit and receive data to and from a predetermined information center via an external packet communication network. The information center stores information about various facilities (hereinafter referred to as facility specifying information). When a transmission request from the navigation device 1 is received, the facility specifying information is transmitted to the navigation device 1. .

  The facility identification information includes “facility name”, “large genre”, “small genre”, “address”, “location”, “business day (business hours)”, “feature”, “user evaluation” for one facility. Etc. ".

  Examples of the “large genre” include “restaurant”. Examples of the “small genre” include “Italian cuisine” when the “large genre” is “restaurant”.

  As “feature”, when “large genre” is “restaurant”, information indicating “three recommended items” and “menu” is set. The “menu” includes, for example, “pasta” when “small genre” is “Italian cuisine”.

  The data storage device 24 includes various data including so-called map matching data, map data, and mark data for improving the accuracy of position identification, a navigation program executed by the control unit 20 to operate the navigation device 1, and an external It is an apparatus for storing facility specifying information acquired by the communication device 23. As a recording medium for these data, a magnetic storage device such as a hard disk is used because of the amount of data.

  The operation switch group 25 is a touch panel installed on the display screen of the display device 26 and mechanical key switches provided around the display device 26. Note that the touch panel and the display device 26 are laminated and integrated, and there are various types of touch panels, such as a pressure-sensitive method, an electromagnetic induction method, a capacitance method, or a combination of these methods. May be.

  The display device 26 is a color display device such as a liquid crystal display, a plasma display, a CRT, or an organic EL, and any of them may be used. On the display screen of the display device 26, a mark indicating the current location identified from the current position of the vehicle detected by the position detector 21 and the map data input from the data storage device 24, a guide route to the destination, a name, Additional data such as landmarks and marks of various facilities can be displayed in an overlapping manner.

  The microphone 28 outputs an electrical signal (voice signal) based on the inputted voice to the control unit 20 when the driver inputs (speaks) voice. The navigation apparatus 1 can be operated by voice commands input via the microphone 28.

  The control unit 20 is composed mainly of a well-known microcomputer comprising a CPU, ROM, RAM, I / O and a bus line connecting these components, and is based on a program stored in the data storage device 24. A map display that calculates the current position of the vehicle as a set of coordinates and traveling directions based on each detection signal from the position detector 21 and displays a map near the current position read from the data storage device 24 on the display device 26. Based on the function and the point data stored in the data storage device 24, the destination facility is selected according to the operation of the operation switch group 25 or the voice input via the microphone 28, and the optimum from the current position to the destination is selected. A route guidance function that performs route calculation (for example, the Dijkstra method) for automatically obtaining a route, and a voice output unit 27 and my Interactive function of controlling the navigation device 1 by entering a voice command from the driver while interaction with the driver through a Rofon 28 comprises (agent function).

In the navigation device 1 configured as described above, the control unit 20 executes a traveling destination setting process for performing destination setting during traveling.
Here, the procedure of the traveling destination setting process executed by the control unit 20 will be described with reference to FIG. FIG. 2 is a flowchart showing the destination setting process during traveling. This traveling destination setting process is a process repeatedly executed while the control unit 20 is activated (powered on).

  When the traveling destination setting process is executed, the control unit 20 first performs a voice recognition process on the voice signal input from the microphone 28 in S10, thereby specifying the content indicated by the voice signal. The content of the audio signal specified by the voice recognition process is hereinafter also referred to as specific audio content.

  Thereafter, in S20, it is determined whether or not the specific voice content in S10 is a search condition indicating the purpose of visit and the arrival time. If the search condition does not indicate the purpose of visit and the arrival time (S20: NO), the process proceeds to S10 and the above-described processing is repeated.

  On the other hand, if the search condition indicates the purpose of visit and the arrival time (S20: YES), the moving speed is set in S30. That is, the average value of the vehicle speed detected by the vehicle speed sensor 22 is set as the moving speed from a predetermined calculation time (in this embodiment, for example, 2 minutes) before the current time to a current time.

  In S40, a purpose / arrival time search process for searching for a destination (facility identification information) based on the visit purpose, arrival time, and moving speed is performed. Thereafter, in S50, it is determined whether or not the number of facility specifying information extracted based on the result of the search in S40 (hereinafter referred to as the number of extracted information) is smaller than a predetermined number of extractions (10 in this embodiment). Here, when the number of extraction information is more than the predetermined number of extraction (S50: NO), it transfers to S10 and repeats the above-mentioned process.

  On the other hand, when the number of extracted information is smaller than the predetermined number of extracted (S50: YES), in S60, the extracted facility specifying information is sequentially extracted from the facility closest to the current position of the vehicle detected by the position detector 21. The voice output unit 27 outputs the indicated voice.

  In S70, voice recognition processing is performed in the same manner as in S10. Thereafter, in S80, it is determined whether or not the specific voice content in S70 indicates one of the facilities indicated by the facility specifying information extracted in the process of S40 (hereinafter referred to as an extracted facility). That is, it is determined whether or not the destination has been determined.

  Here, when the specific voice content and the extraction facility do not match (S80: NO), it is determined that the destination has not been determined, the process proceeds to S100, and the specific voice content in S70 is the destination. It is determined whether or not a change is instructed. If the destination change is not instructed (S100: NO), the process proceeds to S60 and the above-described process is repeated. On the other hand, when the destination is instructed to change the destination (S100: YES), the process proceeds to S10 and the above process is repeated.

  In S80, if the specific voice content matches the extraction facility (S80: YES), it is determined that the destination has been determined, and the purpose of the extraction facility indicated by the specific voice content is determined in S90. Set to the ground and start route guidance. Then, the traveling destination setting process ends.

Next, the purpose / arrival time search process performed in S40 will be described with reference to FIG. FIG. 3 is a flowchart showing the purpose / arrival time search process.
When the purpose / arrival time search process is executed, the control unit 20 first performs a speech recognition process in S210 as in S10. Thereafter, in S220, it is determined whether or not the specific voice content in S210 indicates a search condition different from the purpose of visit and arrival time. Here, if the search condition is not different from the purpose of visit and the arrival time (S220: NO), the process proceeds to S240. On the other hand, if the search condition is different from the purpose of visit and arrival time (S220: YES), the content of the search condition indicated by the specific audio content in S210 is stored in the RAM of the control unit 20 in S230. Store it and go to S240.

  In S240, a visit purpose extraction process is performed. That is, the facility specifying information including “genre” information that matches the purpose of the visit specified in S10 is extracted from the data storage device 24. Thereafter, in S250, a travel time calculation process is performed. That is, the moving time from the current position detected by the position detector 21 to the position specified by the “position” information included in the facility specifying information extracted in S240 is set to the moving speed set in S30. Calculate based on For example, the travel distance is calculated by calculating the optimum route from the current position to the facility location, and the travel time is calculated by dividing the travel distance by the travel speed.

  Next, an arrival time calculation process is performed in S260. In other words, the arrival time is calculated based on the travel time calculated in S250 and the current time measured by the calendar clock 29.

  In S270, facility determination processing is performed. That is, when the arrival time calculated in S260 is earlier than the arrival time specified in S10, the facility specifying information extracted in S240 includes facilities that match the visit purpose and arrival time specified in S10. It is determined as facility identification information (also referred to as purpose / time-matching facility information).

  In step S280, it is determined whether or not a search has been performed for all the facility specifying information stored in the data storage device 24. Here, when not searching about all the facility specific information (S280: NO), it transfers to S240 and repeats the above-mentioned process.

  On the other hand, when all the facility specifying information is searched (S280: YES), an additional search process is performed in S290. That is, based on the search conditions stored in the RAM of the control unit 20, it is determined whether the purpose / time matching facility information matches the search conditions. In particular, it is extracted as facility specifying information including facilities that match the search conditions (hereinafter also referred to as final matching facility information).

When the process of S280 is finished, the purpose / arrival time search process is finished.
Next, an operation example of the navigation device 1 configured as described above will be described with reference to FIG.

  First, while the vehicle is stopped, the driver inputs the purpose of the visit and the arrival time, and then leaves the vehicle. As shown in FIG. 4A, the navigation device 1 lists candidate facilities that are expected to arrive by the input arrival time (in the figure, candidates A, B, C, D, E, F).

  After that, when a search condition is added by speaking by a driving driver, the navigation apparatus 1 narrows down candidate facilities. When the number of candidate facilities is narrowed down, as shown in FIG. 4B, the navigation device 1 reads out the contents of the candidate facilities in order from the closest to the vehicle position via the voice output unit 27 (in the figure). Order 1 → 2 → 3).

Then, when the destination is determined by the driving driver speaking, the navigation device 1 starts route guidance to the destination as shown in FIG.
In the navigation apparatus 1 configured as described above, when the content of the voice specified by the voice recognition process is a search condition indicating the purpose of the visit and the arrival time, the current position detected by the position detector 21 and S30 The facility identification information acquired by the external communication device 23 and stored in the data storage device 24 is searched based on the moving speed set by the processing of the above and the current time measured by the calendar clock 29. Based on the information, the facility specifying information that matches the search condition is extracted (S40).

  In addition, when the number of facility identification information extracted based on the result of the search in S40 (number of extraction information) is smaller than the predetermined extraction number (S50: YES), the voice indicating the extracted facility identification information is output to the voice output unit. 27 (S60).

  And when the content of the voice identified by the voice recognition process indicates one of the facilities (extracted facilities) indicated by the facility identification information extracted by the process of S40 (S80: YES), the specific voice content The extraction facility indicated by is set as the destination and route guidance is started (S90).

  As described above, in the navigation device 1, when the vehicle is departed after inputting the visit purpose and the arrival time as the search conditions, the search is performed based on the current position of the vehicle while traveling, the moving speed of the vehicle, and the current time. And narrow down the facilities that match the search conditions (that is, visit purpose and arrival time). That is, the search can be performed while the vehicle is running.

  And when the number of extracted information is smaller than the predetermined number of extractions, information indicating the facility that matches the search condition is output by voice from the voice output means, so the driver can select from the information indicating the facility that has been voice output, When a word indicating a desired facility is issued, the facility is set as a destination and route guidance is started. That is, the output of the search result and the input of the destination can be performed via voice. That is, since the driver does not need to pay attention to the display screen of the navigation device 1, the destination can be set even while the vehicle is traveling.

  Therefore, the waste that the vehicle must be stopped until the destination is set can be omitted. For this reason, it is possible to suppress the occurrence of a situation in which the arrival time is delayed by the time required for the search and the desired destination cannot be reached within business hours.

  In addition, when the specific voice content indicates a search condition different from the purpose of visit and arrival time, the search condition indicated by the specific voice content in addition to the purpose of visit and arrival time (hereinafter referred to as additional search condition). To search for facilities that match the search conditions (S290). In this case, it is possible to narrow down the facilities that match the search condition by adding the additional search condition and performing the search rather than only the purpose of visit and the arrival time. That is, it is possible to shorten the time required to determine the destination by searching.

  In the embodiment described above, the position detector 21 is the current position detecting means in the present invention, the processing of the vehicle speed sensors 22 and S30 is the moving speed setting means in the present invention, and the calendar clock 29 is the current time acquiring means in the present invention, external communication. The machine 23 is the facility information acquisition means in the present invention, the microphone 28 is the voice input means in the present invention, the voice output unit 27 is the voice output means in the present invention, and the voice recognition processing in S10, S70 and S210 is the input voice identification means in the present invention. , S40 is the search means in the present invention, S60 is the first facility output means in the present invention, S90 is the destination setting means in the present invention, and S50 is the predetermined output condition in the present invention. .

  Further, the “location” information in the facility specifying information is the facility location information in the present invention, “facility name”, “large genre”, “small genre”, “address”, “business day (business hours)” in the facility specifying information. , “Feature”, “user evaluation” and the like are facility content information in the present invention.

  Further, the process of S240 is the visit purpose extracting means in the present invention, the process of S250 is the travel time calculating means in the present invention, the process of S260 is the arrival time calculating means in the present invention, and the process of S270 is the facility determining means in the present invention. .

(Second Embodiment)
A second embodiment of the present invention will be described below with reference to the drawings.
FIG. 5 is a block diagram showing the configuration of the navigation device 1 according to the second embodiment to which the present invention is applied.

  As shown in FIG. 5, the configuration of the navigation device 1 in the second embodiment is different from that of the first embodiment in that the data storage device 24 is provided with storage areas for a user preference database 24a and a derivation search condition database 24b. This is the point.

  The user preference database 24a includes "when, where, what for what", "when, where, what, what" and "when, where, what" (concerts, movies, events). ) ”Indicating the user's preference, and information (search word) indicating the search condition used by the user in the past.

  The control unit 20 periodically performs statistical processing on the preference information and the search word stored in the user preference database 24a. The data is stratified by this statistical processing, and a database in which a user's search frequency is determined to be palatable is created. This database is a material for categorizing the user's favorite foods and favorite places, and determining what kind of food and what kind of facility they like.

  In the derived search condition database 24b, a plurality of main search condition information indicating different search conditions (hereinafter referred to as main search conditions) and the main search condition information are associated with the main search condition information. Derived search condition information indicating the retrieved search conditions (hereinafter referred to as derived search conditions) is stored for each main search condition information.

  For example, when the main search condition is “restaurant”, the derivative search conditions are “things with good 'user evaluation' in facility specifying information”, “things with small genre in facility specifying information being“ Italian cuisine ”” , “Those whose features in the facility specifying information are“ pasta ”” are set.

  In the navigation device 1 configured as described above, the control unit 20 selects one of a travel search mode for setting a destination while driving and a stop search mode for stopping and setting a destination. Search mode setting process for executing, search process during running for executing the travel search mode, search response process for performing a response related to the search by voice, interruption process for interrupting the search, and derivative search conditions The derived search condition setting process for setting is executed independently of each other.

  Here, the procedure of the search mode setting process executed by the control unit 20 will be described with reference to FIG. FIG. 6 is a flowchart showing the search mode setting process. This search mode setting process is a process repeatedly executed while the control unit 20 is activated (powered on).

  When the search mode setting process is executed, the control unit 20 first determines in S410 whether or not an operation for calling the “agent” (hereinafter referred to as an agent call operation) is performed via the operation switch group 25. Determine whether. Here, when the agent call operation is not performed (S410: NO), the processing of S410 is repeated. On the other hand, if an agent call operation is performed (S410: YES), in S420, the voice output unit 27 is caused to output a voice for responding to the user (agent response).

  In S430, voice recognition processing is performed in the same manner as in S10. Thereafter, in S440, it is determined whether or not the specific voice content in S430 is a search condition indicating the purpose of visit and the arrival time. If the search condition does not indicate the purpose of visit and the arrival time (S440: NO), the process proceeds to S430 and the above-described processing is repeated.

  On the other hand, if the search condition indicates the purpose of visit and the arrival time (S440: YES), the contents of the search condition indicated by the specific voice content in S210 are stored in the RAM of the control unit 20 (S450 and YES) in S450. Arrival time), and in S460, a derived search condition corresponding to the search condition (visit purpose and arrival time) indicated by the specific audio content in S210 is extracted from the derived search condition database 24b. Store in RAM.

  Thereafter, in S470, a predicted search time required for the search based on the search condition (visit purpose and arrival time) indicated by the specific voice content in S210 is calculated. In S480, it is determined whether or not the predicted search time calculated in S470 is longer than a first predetermined search time (for example, 1 minute in this embodiment).

  If the predicted search time is equal to or shorter than the first predetermined search time (S480: NO), the process proceeds to S530. On the other hand, when the predicted search time is longer than the first predetermined search time (S480: YES), in S490, the voice output unit 27 is made to output a voice for confirming whether or not to enter the travel search mode. In S500, the voice recognition process is performed in the same manner as in S10. Thereafter, in S510, it is determined whether or not the specific audio content in S500 is a request for a travel search mode (hereinafter referred to as a travel search request).

  If it is a traveling search request (S510: YES), the traveling search mode is started in S520, and the search mode setting process is terminated. On the other hand, when it is not a traveling search request (S510: NO), the process proceeds to S530.

In S530, the stop search mode is started and the search mode setting process is terminated.
Next, a procedure of the traveling search process executed by the control unit 20 will be described with reference to FIG. FIG. 7 is a flowchart showing the running search process. This on-travel search process starts when the process for starting the travel search mode is performed at S520, S1180, S1200, and S1210, and is repeatedly executed until the search interruption process (see S1130) is performed.

  When the traveling search process is executed, the control unit 20 first performs a speech recognition process in S610 as in S10. Thereafter, in S620, it is determined whether or not the specific audio content in S610 indicates a search condition different from the visit purpose and arrival time.

  If the search condition is not different from the purpose of visit and the arrival time (S620: NO), the moving speed is set at 720 in the same manner as S30. In S730, the purpose / arrival time search process for searching for the destination based on the visit purpose, the arrival time and the moving speed is performed, and then the running search process is terminated.

  On the other hand, when the search condition is different from the purpose of arrival and arrival time (S620: YES), the contents of the search condition indicated by the specific voice content in S610 are stored in the RAM of the control unit 20 in S630. In step S640, the derivative search condition corresponding to the search condition indicated by the specific voice content in step S610 is extracted from the derivative search condition database 24b and stored in the RAM of the control unit 20.

  Thereafter, in S650, a predicted search time required for the search based on the search condition indicated by the specific voice content in S610 is calculated. In S660, it is determined whether or not the predicted search time calculated in S650 is longer than a second predetermined search time (for example, 10 seconds in this embodiment).

  If the predicted search time is equal to or shorter than the second predetermined search time (S660: NO), the process proceeds to S680. On the other hand, when the predicted search time is longer than the second predetermined search time (S660: YES), in S670, the voice output unit 27 is made to output a voice for notifying the predicted search time calculated in S650. Thereafter, in S680, the moving speed is set in the same manner as in S30. In step S690, a purpose / arrival time search process is performed.

  Thereafter, in S700, a search number is assigned to the search result of the purpose / arrival time search process performed in S690, and the result is stored in the RAM of the control unit 20. Further, in S710, information indicating the search condition indicated by the specific voice content in S610 is stored as a search word in the user preference database 24a, and the running search process is terminated.

Next, the purpose / arrival time search processing performed in S690 and S730 will be described with reference to FIG. FIG. 8 is a flowchart showing the purpose / arrival time search process.
When the purpose / arrival time search process is executed, the control unit 20 first performs a visit purpose extraction process in S810 as in S240. Thereafter, in S820, the movement time calculation process is performed in the same manner as in S250. Thereafter, in S830, arrival time calculation processing is performed in the same manner as in S260. Thereafter, in S840, facility determination processing is performed in the same manner as in S270.

  In step S850, it is determined whether or not a search has been performed for all the facility specifying information stored in the data storage device 24. If all the facility specifying information has not been searched (S850: NO), the process proceeds to S810 and the above process is repeated.

  On the other hand, when all the facility specifying information is searched (S850: YES), additional search processing is performed in S860 in the same manner as in S290. Thereafter, in S870, derivative search processing is performed. That is, based on the derivation search condition stored in the RAM of the control unit 20, it is determined whether or not the final matching facility information extracted in the additional search process of S860 matches the derivation search condition. If they match, it is extracted as facility specifying information (also referred to as derived matched facility information) including facilities that match the derived search condition, and this derived matched facility information is stored in the RAM of the control unit 20. This derivation search process is not performed when no derivation search condition is stored in the RAM of the control unit 20.

When the process of S870 ends, the purpose / arrival time search process ends.
Next, the procedure of the search response process executed by the control unit 20 will be described with reference to FIG. FIG. 9 is a flowchart showing the search response process. This search response process is a process that is repeatedly executed until the cancellation process (see S1080 and S1110) is performed when the control unit 20 starts the travel search mode in the process of S520.

  When the search response process is executed, the control unit 20 first performs a speech recognition process in S910 as in S10. Thereafter, in S920, it is determined whether or not the specific voice content in S910 indicates a search condition. If the search condition is indicated here (S920: YES), it is determined in S930 whether or not the search condition has already been searched in the derivation search process of S870 (hereinafter referred to as searched derivation condition). Determine whether.

  If the derived derivative condition is found (S930: YES), the derived matched facility information under the corresponding derived search condition is extracted from the RAM of the control unit 20 in S940, and the extracted derived matched facility information is displayed. The voice output unit 27 outputs the indicated voice, and the process proceeds to S970. On the other hand, if it is not the retrieved derivation condition (S930: NO), the process proceeds to S970.

  In S920, when the specific voice content in S910 does not indicate the search condition (S920: NO), the state in which the voice indicating the search condition is not input to the microphone 28 is a predetermined non-input time (S950). In the present embodiment, it is determined whether or not it has continued for, for example, 30 seconds. Here, when the predetermined non-input time has not been continued (S950: NO), the process proceeds to S970. On the other hand, if it continues beyond the predetermined non-input time (S950: YES), in S960, a guidance voice that prompts the user to input the search condition is output to the voice output unit 27, and the process proceeds to S970.

  When the process proceeds to S970, the speech recognition process is performed in the same manner as S10. Thereafter, in S980, it is determined whether or not the specific voice content in S970 is a request for reading out the search result (hereinafter referred to as a reading command). If the command is not a reading command (S980: NO), the search response process is terminated. On the other hand, if it is a reading command (S980: YES), in S990, the voice output unit 27 is made to output the voice indicating the last matched facility information extracted in the purpose / arrival time search process of S690 or S730, and the search response The process ends. For example, "Read out the results from the nearest", "Where is the nearest place?", "Where is the next nearest place?", "Where is the highest user evaluation?" Etc.

  Next, the procedure of interruption processing executed by the control unit 20 will be described with reference to FIG. FIG. 10 is a flowchart showing the interruption process. This search mode setting process is a process repeatedly executed while the control unit 20 is activated (powered on).

  When this interruption process is executed, the control unit 20 first performs a speech recognition process in S1110 in the same manner as in S10. Thereafter, in S1120, it is determined whether or not the specific audio content in S1110 is a request for interrupting the search (hereinafter referred to as a search interruption command). If it is not a search interruption command (S1120: NO), the interruption process is terminated. On the other hand, if it is a search interruption command (S1120: YES), the in-travel search process is interrupted in S1130, and a sound indicating that the search is interrupted is output to the audio output unit 27.

  Thereafter, in S1140, voice recognition processing is performed in the same manner as in S10. Thereafter, in S1150, whether or not the specific voice content in S1140 indicates one of the facilities indicated by the last matching facility information extracted in the purpose / arrival time search processing in S690 or S730 (hereinafter referred to as an extracted facility). Determine whether. That is, it is determined whether or not the destination has been determined.

  If the specific voice content matches the extracted facility (S1150: YES), it is determined that the destination has been determined, and the extracted facility indicated by the specific voice content is set as the destination in S1160. Set and start route guidance. Then, the interruption process ends.

  On the other hand, if the specific voice content does not match the extracted facility (S1150: NO), it is determined that the destination has not been determined, and the process proceeds to S1170, and the specific voice content in S1140 is searched from the beginning. It is determined whether or not it is a request for performing (hereinafter referred to as a first search command). Here, if it is the first search command (S1170: YES), in S1180, the search conditions other than the visit purpose and arrival time are deleted from the contents of the search conditions stored in the RAM of the control unit 20. The traveling search process is resumed, and the interruption process is terminated. As a result, a search condition other than the purpose of visit and the arrival time is searched by newly adding a search condition.

  On the other hand, if it is not the first search command (S1170: NO), in S1190, whether or not the specific voice content in S1140 is a request for searching from the middle (hereinafter referred to as a midway search command). Judging. Here, in the case of a midway search command (S1190: YES), in S1200, the driver first designates a search number by voice input via the microphone 28, and when the search number is designated, The search result corresponding to this search number is extracted from the RAM of the control unit 20, the search from the extracted search result is resumed, and the interruption process is terminated. Thus, the search is performed by newly adding a search condition from the search result on the way.

  If it is not a midway search command in S1190 (S1190: NO), the running search process is resumed in S1210, and the interruption process is terminated. Accordingly, the search is resumed from the state where the traveling search process is interrupted in S1130.

  Next, the procedure of the derivative search condition setting process executed by the control unit 20 will be described with reference to FIG. FIG. 11 is a flowchart showing the derivative search condition setting process. This derived search condition setting process is a process that is repeatedly executed while the control unit 20 is activated (powered on).

  When the derivative search condition setting process is executed, the control unit 20 first performs a user preference database rewriting process in S1310. That is, when the destination is determined in the process of S1150, the facility specifying information corresponding to the destination, the search word stored in the user preference database 24a in the process of S710, the calendar and time counted by the calendar clock 29, and Based on the time of day, “when, where, for what, went”, “when, where, what, ate” and “when, where, what (concert, movie, event), Preference information such as “I went to see” is added to the user preference database 24a.

  Thereafter, in S1320, it is determined whether or not the contents of user preference database 24a have been changed. Here, when the content of the user preference database 24a has not been changed (S1320: NO), the derivative search condition setting process is terminated.

  On the other hand, when the user preference database 24a is changed (S1320: YES), the derivative search condition database rewriting process is performed in S1330. That is, based on the contents of the user preference database 24a, the correspondence between the main search condition information and the derived search condition information in the derived search condition database 24b is set. For example, when a lot of preference information “I ate pasta at an Italian restaurant” is stored in the user preference database 24a, the derivative search condition of the main search condition “restaurant” is “Italian food” and “Pasta” is set. For example, when a large number of “where is the nearest place” is stored as a search word, a condition of “search in order from the nearest vehicle” is set as a derived search condition.

When the derivative search condition database rewriting process is completed, the derivative search condition setting process is terminated.
Next, an example of interaction between the driver (user) and the navigation device 1 (agent) in the navigation device 1 configured as described above will be shown.

:
:
User …… “Look for a“ restaurant ”that can arrive within“ one hour ”. ]
Agent ・ “Look for“ restaurants ”that can be reached within“ one hour ”.

Searching takes time because there are so many cases.
How about searching while driving? ]
User: “Enjoy” (User starts running)
:
Agent: “What is the“ genre ”of“ restaurant ”? ]
User: “Pasta wants to eat”
Agent: "It's" pasta ""
“Looking for“ Italian cuisine ”“ restaurant ”? ]
User ... "Yes"
Agent: “Which“ restaurant ”is good? ]
User: “I like Nagoya city”
Agent ・ Look for "restaurants" of "Italian cuisine" in "Nagoya city".

Is it OK? ]
User: “Enjoy”
Agent ・ There are 300 “restaurants” of “Italian cuisine” in “Nagoya city”. ]
Agent · “First“ Reputation Rank A ”and“ Within 30 minutes from here ”
Search Is it OK? ]
User: “Enjoy. ]
Agent: “Popularity Rank A” and “within 30 minutes from here”
There were 10 “restaurants” in “Italian cuisine”. ]
User: “Where is the closest place? ]
Agent ... "The closest place? It is “001” of “〇〇”.

“It ’s 15 minutes from here.”
This is "Italian cuisine" and "Restaurant" characterized by "OO A". ]
User: “Where is the next closest location? ]
Agent: “The next closest place is“ 00 ”of“ 00 ”.

“It ’s 15 minutes from here.”
This is “Italian food” and “Restaurant” characterized by “△△ B”. ]
User: “Is“ △△ B ”? ]
Agent "Yes"
User: Is there a “delicious restaurant for“ □□ C ””? ]
Agent: “Within 30 minutes from here”
There is no “savory restaurant of“ □□ C ””.

In the menu of “00” of “00”, “00” of “00”,
“□□ C” is included. ]
User: “Within 1 hour from here,
Is there a “delicious restaurant for“ □□ C ””? ]
Agent ... “Within 1 hour from here,
“It ’s a delicious restaurant in“ □□ C ””.

Search Please wait for a little "10 seconds". ]
Agent "" I was able to search.
"Within 1 hour from here""4"
“□□ C” delicious restaurant ”was found. ]
User: “Guide me from the nearest place. ]
Agent ... “I will guide you from the nearest place. ]
Agent: “It is“ 00 ”of“ 00 ”.

45 minutes from here.
This is “delicious restaurant of“ □□ C ””.
next···"
User: “Stop,“ OO3 ”of“ OO ”was decided. Please guide me. ]
Agent ... "I will guide you to" 00 "of" 00 ".

Estimated arrival time is around 00:00. (Start route guidance)

In the navigation apparatus 1 configured as described above, when the content of the voice specified by the voice recognition process is a search condition indicating the purpose of the visit and the arrival time, the current position detected by the position detector 21 and S30 The facility identification information acquired by the external communication device 23 and stored in the data storage device 24 is searched based on the moving speed set by the processing of the above and the current time measured by the calendar clock 29. Based on the information, the facility specifying information that matches the search condition is extracted (S690, S730).

  Further, when there is a request (reading command) to read out the search result from the driver (S980: YES), the voice output unit 27 is made to output a voice indicating the extracted facility specifying information (S990).

  Then, when the content of the voice specified by the voice recognition processing indicates one of the facilities (extracted facilities) indicated by the facility specifying information extracted by the processing of S690 or S730 (S1150: YES) The extraction facility indicated by the audio content is set as the destination, and the route guidance is started (S1160).

  As described above, in the navigation device 1, when the vehicle is departed after inputting the visit purpose and the arrival time as the search conditions, the search is performed based on the current position of the vehicle while traveling, the moving speed of the vehicle, and the current time. And narrow down the facilities that match the search conditions (that is, visit purpose and arrival time). That is, the search can be performed while the vehicle is running.

  Then, when there is a reading command, information indicating the facility that matches the search condition is output by voice from the voice output means, so the driver can select a desired facility from the information indicating the facility that is output by voice. When the language shown is issued, the facility is set as the destination and route guidance is started. That is, the output of the search result and the input of the destination can be performed via voice. That is, since the driver does not need to pay attention to the display screen of the navigation device 1, the destination can be set even while the vehicle is traveling.

  Therefore, the waste that the vehicle must be stopped until the destination is set can be omitted. For this reason, it is possible to suppress the occurrence of a situation in which the arrival time is delayed by the time required for the search and the desired destination cannot be reached within business hours.

  In addition, when the specific voice content indicates a search condition different from the purpose of visit and arrival time, in addition to the purpose of visit and arrival time, a search condition (additional search condition) indicated by the specific voice content is added. A search is performed to narrow down facilities that match the search conditions (S860). In this case, it is possible to narrow down the facilities that match the search condition by adding the additional search condition and performing the search rather than only the purpose of visit and the arrival time. That is, it is possible to shorten the time required to determine the destination by searching.

  If the specific voice content indicates a search condition (S440, S620: YES), the derived search condition corresponding to this search condition (main search condition) is extracted from the derived search condition database 24b (S460, S620). In S640), the derivative search condition is added and a search is performed to narrow down facilities that match the search condition (S870).

  That is, if the search is already performed using the derived search condition before the driver requests the search using the derived search condition, the search result based on the derived search condition can be immediately presented to the driver. Therefore, the time required to determine the destination by searching can be shortened.

  Further, the correspondence relationship between the main search condition and the derived search condition is set based on the preference information stored in the user preference database 24a (S1330). In other words, since the derived search condition is set based on the user's preference, the possibility that the driver requests a search using the derived search condition is increased. That is, when the driver requests a search under a certain search condition, the possibility that the navigation device 1 has already performed a search under the search condition increases, and the time required for determining the destination by the search is increased. Further shortening is possible. Furthermore, it is possible to prevent the navigation device 1 from performing a search using the derived search condition in vain.

  Further, when the state in which the voice indicating the search condition is not input to the microphone 28 continues beyond the predetermined non-input time (S950: YES), the voice output unit 27 outputs a guidance voice prompting the input of the search condition. (S960). That is, by outputting the guidance voice, the possibility that the driver adds a search condition for narrowing down the facilities is increased. That is, it is possible to shorten the time required to determine the destination by searching.

  Also, when the specific voice content indicates the search condition (S440, S620), the predicted search time is calculated (S650), and when the predicted search time is longer than the second predetermined search time (S660: YES). Then, the voice output unit 27 is caused to output a voice for notifying the predicted search time (S670). For this reason, the driver can know the predicted search time in advance. Therefore, even when the search time is long, the driver can grasp to some extent the time when the search is completed, so that the driver is not frustrated.

  In the embodiment described above, the processing of the vehicle speed sensor 22 and S680 and S720 is the moving speed setting means in the present invention, and the speech recognition processing of S430, S500, S610, S910, S970, S1110 and S1140 is the input speech specifying means in the present invention. , S690 and S730 are the search means in the present invention, S990 is the first facility output means in the present invention, S1160 is the destination setting means in the present invention, and S980 is the predetermined output condition in the present invention. It is.

  Further, the process of S810 is a visit purpose extracting means in the present invention, the process of S820 is a travel time calculating means in the present invention, the process of S830 is an arrival time calculating means in the present invention, and the process of S840 is a facility determining means in the present invention. .

  The derived search condition database 24b is the search condition information storage means in the present invention, the processing in S870 is the extracted facility information storage means in the present invention, the process in S940 is the second facility output means in the present invention, and the user preference database 24a is in the present invention. The preference information storage means in S13, the process in S1330 is the correspondence setting means in the present invention, the process in S960 is the search condition guidance means in the present invention, the process in S650 is the search time calculation means in the present invention, and the process in S670 is the search in the present invention. The time guide means, the main search condition information are the first search condition information in the present invention, the derived search condition information is the second search condition information in the present invention, and the second predetermined search time is the predetermined search time in the present invention.

As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, As long as it belongs to the technical scope of this invention, a various form can be taken.
For example, in the above embodiment, the visit purpose is a restaurant, but the visit purpose is not limited to a restaurant, and may be another facility (for example, a movie theater).

  In the above embodiment, the average value of the vehicle speed measured from the predetermined calculation time to the current time is used as the movement speed. However, a fixed value (for example, 30 km / h) set in advance or from the time of departure is shown. You may set the average value of the vehicle speed measured by the present time as a moving speed.

  Further, in the above embodiment, the user preference database 24a shows the one that stores preference information such as “when, where, for what,” etc., but for example, “standard (for example, 5 minutes → 10 minutes) Search criteria such as “like to increase in units of twice (15 minutes)” (for example, 10 minutes → 20 minutes → 30 minutes), “like to increase in 10 minute units”, etc. as preference information You may do it.

  In the above embodiment, the guidance voice that prompts the user to input the search condition is output. However, the navigation apparatus 1 may propose a search condition that makes it easy to narrow down the destination facility.

The block diagram which shows the structure of the navigation apparatus 1 of 1st Embodiment. The flowchart which shows the destination setting process procedure in driving | running | working. The flowchart which shows the objective / arrival time search processing procedure. The figure explaining the operation example of the navigation apparatus. The block diagram which shows the structure of the navigation apparatus 1 of 2nd Embodiment. The flowchart which shows a search mode setting process sequence. The flowchart which shows the search process procedure during driving | running | working. The flowchart which shows the objective / arrival time search processing procedure. The flowchart which shows a search response process sequence. The flowchart which shows the interruption process procedure. The flowchart which shows the derived search condition setting process sequence.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus, 20 ... Control part, 21 ... Position detector, 21a ... GPS receiver, 21b ... Gyroscope, 21c ... Distance sensor, 21d ... Geomagnetic sensor, 22 ... Vehicle speed sensor, 23 ... External communication device, 24 ... Data storage device, 24a ... user preference database, 24b ... derivative search condition database, 25 ... operation switch group, 26 ... display device, 27 ... audio output unit, 28 ... microphone, 29 ... calendar clock.

Claims (10)

A navigation device mounted on a vehicle and guiding a route to a set destination,
Current position detection means for detecting the current position of the host vehicle;
Moving speed setting means for setting the moving speed of the host vehicle;
Current time acquisition means for acquiring current time information indicating the current time;
Facility information acquisition means for acquiring a plurality of facility specifying information including at least facility location information relating to the location of the facility to be searched which is a facility to be searched and facility content information relating to the content of the facility to be searched;
Voice input means for inputting voice;
Audio output means for outputting audio;
Input voice specifying means for specifying the content of the input voice by performing voice recognition processing on the voice input to the voice input means;
The current position detected by the current position detecting means and the moving speed setting when the content of the voice specified by the input voice specifying means is a first search condition that is a search condition indicating a visit purpose and arrival time. Based on the movement speed set by the means and the current time information acquired by the current time acquisition means, the facility information acquired by the facility information acquisition means is searched, and based on the search result, Search means for extracting a condition-matching facility that is the search target facility that matches a search condition;
A first facility output means for outputting, to the sound output means, a sound indicating the facility specifying information of the condition matching facility extracted by the search means when a predetermined output condition set in advance is established;
When the content of the voice specified by the input voice specifying means indicates one of the condition matching facilities extracted by the search means, the condition matching facility is set as the destination. Destination setting means;
A navigation device comprising: The search means includes
From the facility identification information acquired by the facility information acquisition means, the visit purpose extraction means for extracting the facility identification information including the facility content information that matches the visit purpose;
The movement speed setting means sets a movement time from the current position detected by the current position detection means to a position specified by the facility position information included in the facility specification information extracted by the visit purpose extraction means. Travel time calculation means for calculating based on the travel speed,
An arrival time calculating means for calculating an arrival time based on the moving time calculated by the moving time calculating means and the current time information acquired by the current time acquiring means;
When the arrival time calculated by the arrival time calculating means is before the arrival time indicated by the first search condition, the search target facility indicated by the facility specifying information extracted by the visit purpose extracting means is A facility determining means as the condition matching facility;
Composed of,
The navigation device according to claim 1. The predetermined output condition is:
The number of the condition-matching facilities extracted by the search means is equal to or less than a predetermined extraction number set in advance;
The navigation device according to claim 1 or 2, wherein The predetermined output condition is:
The content of the sound specified by the input sound specifying means indicates a command set in advance for causing the sound output means to output a sound indicating the facility specifying information of the condition matching facility;
The navigation device according to claim 1 or 2, wherein The search means includes
When the content of the voice specified by the input voice specifying means is a second search condition indicating a search condition different from the first search condition, the second search condition is further added in addition to the first search condition. Search to extract the facility that matches the conditions,
The navigation apparatus according to any one of claims 1 to 4, wherein the navigation apparatus is characterized in that A plurality of first search condition information indicating different search conditions, and second search condition information indicating search conditions related to the first search condition information in correspondence with the first search condition information. Search condition information storage means for storing each search condition information,
When the first search condition matches the search condition indicated by the first search condition information, the search means further includes a second corresponding to the first search condition information in addition to the first search condition. Perform a search by adding a third search condition indicated by the search condition information, extract the condition matching facility,
Extracted facility information storage means for storing the facility specifying information related to the condition matching facility extracted by the search means based on a result of performing the search by adding the third search condition;
When the content of the sound specified by the input sound specifying means indicates the third search condition, the facility specifying information related to the condition matching facility searched under the third search condition is extracted as the extracted facility information. Second facility output means for extracting from the storage means and outputting the sound indicating the facility specifying information to the sound output means;
Comprising
The navigation device according to claim 5. The search means includes
When the second search condition matches the search condition indicated by the first search condition information, in addition to the second search condition, second search condition information corresponding to the first search condition information indicates Add a third search condition and perform a search to extract the condition matching facility.
The navigation apparatus according to claim 6. Preference information storage means for storing preference information indicating user preferences;
Correspondence relation setting means for setting the correspondence relation between the first search condition information and the second search condition information based on preference information stored in the preference information storage means;
The navigation apparatus according to claim 6 or 7, further comprising: When the state in which the voice indicating the search condition is not input to the voice input means continues for a predetermined non-input time that has been set in advance, a guidance voice prompting the user to input the search condition is provided as the voice. Search condition guide means for outputting to the output means,
The navigation device according to any one of claims 1 to 8, wherein A search time calculating means for calculating a predicted search time required for a search based on the search condition when the content of the voice specified by the input voice specifying means indicates a search condition;
When the predicted search time calculated by the search time calculation means is longer than a predetermined search time set in advance, a voice indicating the predicted search time calculated by the search time calculation means is sent to the voice output means. Search time guidance means for outputting;
The navigation apparatus according to any one of claims 1 to 9, further comprising:

Images