JP2007078632A - On-vehicle navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle navigation apparatus for searching for the facility most suitable for user's preference and guiding the user to it. <P>SOLUTION: The on-vehicle navigation apparatus comprises a photographing means for photographing the surroundings of a vehicle, a signboard information extracting means for extracting signboard information including at least charge information related to an article or service from the photographed image data, a vehicle position detecting means for detecting the position of the vehicle at which the signboard information is photographed, a facility position detecting means for detecting the position of the facility providing the signboard based on the extracted signboard information and the detected vehicle position, and a signboard information storage means for storing the extracted signboard information and the detected facility position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an in-vehicle navigation device that guides a vehicle to a destination according to a guide route.

  As the vehicle travels, the current position is detected by GPS (Global Positioning System), etc., and the current position is displayed on the display device together with the road map, and an appropriate route from the current position to the destination is displayed. An in-vehicle navigation device that is set and guided by a display device, an audio output device, or the like contributes to an efficient and safe operation of the user.

  Road maps, facilities, and other data are stored on DVDs and hard disk drives (hereinafter abbreviated as HDDs), but since data is updated daily, the latest map data and facility data are distributed from the data distribution center. In the navigation device, if there is a newly added facility (new facility) in the facility data, an image indicating that there is a new facility is displayed on the map displayed on the display device when the vehicle approaches the new facility. An in-vehicle navigation device has been devised (see Patent Document 1).

  Also, an in-vehicle navigation device that automatically adds a facility existing at an arbitrary point to a map database from the state of a vehicle such as a vehicle stop or from image data taken by a TV camera attached to the vehicle has been devised. (See Patent Document 2).

Japanese Patent Laying-Open No. 2005-0699967 Japanese Patent Laid-Open No. 11-351888

  Information that is updated (changed) every day includes, for example, fuel prices for gas stations, car washing fees, daily lunch menus for family restaurants, and their price display as highly competitive industries. For example, in stores along roads, menus and charges for goods or services provided are often posted for customers by large signs, banners, bags, etc. (hereinafter, signs etc.). These products or services have the same contents, but the price changes every day, or even the same prices change the contents of the products or services for each day of the week and time, and the contents of the notices change daily.

  If there is a petrol station that provides fuel at a lower price than the refueled gas station while driving after refueling at the gas station, even if the difference is small, even if it is about 100 yen or 200 yen, the difference Most users experience a sense of loss regardless of the amount. Similarly, after eating at a suitable family restaurant, etc., the information on the signboard etc. is better than the family restaurant where you dine while driving and the price is cheap and matches the taste at that time I often experience regrets when I encounter it.

  In this way, the contents of the goods or services of the store on the driving route of the vehicle or the contents of the service, price information, etc. are taken into consideration if it is in advance (convincing, not regret later) Although it should be possible to select a store, there are many cases where this is missed.

  In the example of Patent Document 1, it is not possible to obtain the contents of daily products or services only by obtaining information on new facilities from the distribution center. In addition, in the example of Patent Document 2, the information on the new facility is simply the camera mounted on the own vehicle instead of the distribution center, and the contents of daily products or services cannot be obtained in the same manner. .

  Against the background of the above problems, an object of the present invention is to provide an in-vehicle navigation device that searches and guides a facility most suitable for the user's preference.

Means for Solving the Problems and Effects of the Invention

  This invention provides the vehicle-mounted navigation apparatus for solving the said subject. That is, according to the first aspect, the photographing means for photographing the surroundings of the vehicle, the signboard information extracting means for extracting the signboard information including at least the charge information related to the product or service from the photographed image data, and the signboard information are photographed. Vehicle position detecting means for detecting the position of the vehicle that has been extracted, facility position detecting means for detecting the position of the facility that provides the signboard from the extracted signboard information and the detected vehicle position, and extracted And a signboard information storage means for storing the signboard information and the detected location of the facility.

  With the above configuration, since the latest price information at the time of traveling of the facility on the traveling route of the own vehicle can be obtained and stored, it can be utilized as incidental information of the facility.

  According to claim 2, the signboard information in the in-vehicle navigation device of the present invention can be configured to include at least one of the contents of the product or service and the date and time when the product or service is provided. .

  With the above configuration, for example, “Today's price“ 116.50 yen / L ”at a gas station,“ Saturday and Sunday discount “300 yen for car wash” ”,“ Friday time service at a family restaurant ” Since it is possible to obtain and memorize information such as “a drink bar is free after 13:00”, it becomes possible to know what is cheaper at what store.

  According to claim 3, the in-vehicle navigation device of the present invention includes route search means for searching for a guide route to the destination, and search condition setting means for setting a condition for searching for the guide route, Charge information is set as a search condition in the search condition setting means, and the route search means can be configured to search for facilities stored in the signboard information storage means based on the search conditions.

  With the above configuration, for example, when searching for a gas station, the search results are displayed in order from the lowest price to search for price information as a search condition rather than just searching for a gas station along the road where the vehicle is traveling. It is also possible to do. Then, the user can refuel at the cheapest gas station along the road where the vehicle is traveling without regretting finding a cheaper gas station at the end of the gas station where the fuel is supplied. Similarly, after signing at a suitable family restaurant, etc., a signboard for a store that matches the food contents, prices, and preferences at that time better than a family restaurant where you dine while driving. I don't feel sorry when I encounter such information.

  According to claim 4, the search condition setting means in the in-vehicle navigation device of the present invention is configured to set at least one of the content of the product or service and the date and time when the product or service is provided as the search condition. Can take.

  With the above configuration, it is possible to search for facilities by giving priority to the contents of goods or services, or the date and time when goods or services are provided, in addition to the fee. The facility can be searched in consideration of the intention and other user requirements, and the facility desired by the user is displayed at the top of the search result list, so that the user's satisfaction with the in-vehicle navigation device is also increased.

  According to claim 5, the in-vehicle navigation device of the present invention has cost-effectiveness calculation means for calculating the cost-effectiveness of the product or service from the content of the product or service and the charge of the product or service. The calculated cost effectiveness is set as a search condition in the search condition setting means, and the route search means can be configured to search for facilities stored in the signboard information storage means based on the search conditions.

  There may be a case where only the price of a product or service, or the content of the product or service alone, does not know whether the product or service satisfies the user. With the above configuration, the cost-effectiveness of the product or service can be understood, the user can search for the facility by cost-effectiveness, and the facility that provides the product or service desired by the user at a higher quality and lower price can be selected. It becomes possible.

  According to a sixth aspect of the present invention, there is provided an in-vehicle navigation device for solving the above-described problems, a photographing means for photographing the surroundings of the vehicle, contents relating to the product or service, and the product or service provided from the captured image data. Signboard information extraction means for extracting signboard information including the date and time to be displayed, vehicle position detection means for detecting the position of the vehicle where the signboard information is photographed, and the extracted signboard information and the detected vehicle position. As a vehicle-mounted navigation device, comprising: a facility position detecting means for detecting the position of a facility that is a provider of the information; and a signboard information storage means for storing the extracted signboard information and the detected position of the facility Composed.

  For example, if there is a sign such as “Summer sale, until the end of September” at a certain store, there is no charge information, but the word “summer sale” suggests that the product is offered at a lower price than the normal price. Not difficult. With the above-described configuration, it is possible to know what is cheaper at what store even if fee information is not clearly indicated on a signboard, a bag, or the like.

  According to claim 7, the in-vehicle navigation device according to claim 6 has route search means for searching for a guide route to the destination, and search condition setting means for setting a condition for searching for the guide route. In the search condition setting means, signboard information is set as a search condition, and the route search means can be configured to search for facilities stored in the signboard information storage means based on the search conditions.

  Even with the above configuration, even if the billing information is not clearly shown on the signboard, bag, etc., the facility can be searched with priority given to the contents of the product or service, or the date and time when the product or service is provided. User satisfaction is enhanced by searching and using facilities taking into account the contents of products or services, preferences, passengers' intentions, and other user requirements.

  For the purpose of providing an in-vehicle navigation system that searches for and guides the facility that best suits the user's preference, photograph the signboard on the road along which the vehicle travels, and the price and content of the goods or services included in the signboard The system was realized by searching and guiding facilities based on information.

  Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. FIG. 1 shows an attachment example of a vehicle-mounted navigation device (hereinafter abbreviated as a navigation device) 100 and a camera 25 according to the present invention. The camera 25 that is the photographing means of the present invention is installed in a place where the front of the vehicle 40 can be photographed, for example, at the center of the ceiling. Further, in order to focus on photographing roadsides, the vehicle 40 may be installed on the left front and right front of the dash panel of the vehicle 40. In the example of FIG. 1A, in the camera 25, an area A indicated by a broken line is an up-and-down photographing range. Further, as shown in FIG. 1B, the imaging range B of the left and right method of the camera 25 can photograph a signboard or the like along a road using, for example, a wide-angle lens. Although there is no restriction | limiting in particular in the attachment position of the navigation apparatus 100, in the example of FIG. 1, the indicator 10 is attached to the center part of a dash panel.

  The camera 25 which is the photographing means of the present invention is a known CCD camera or the like, for example, a suspicious person intrusion detection camera for detecting an intruder into the vehicle 40, or a forward monitoring for photographing the front of the inter-vehicle distance measuring vehicle 40. If it is shared with the camera, it can be used without cost increase.

  FIG. 2 is a block diagram showing the overall configuration of the vehicle-mounted navigation device. The on-vehicle navigation device 100 includes a position detector 1, a map data input device 6, an operation switch group 7, a remote control (hereinafter referred to as remote control) sensor 11, a voice synthesis circuit 24 for voice guidance, a speaker 15, and a nonvolatile memory 9. , A display device 10, a hard disk device (HDD) 21, a control circuit 8 connected thereto, and a remote control terminal 12.

  A position detector 1 as vehicle position detecting means of the present invention has a known geomagnetic sensor 2, a gyroscope 3, a distance sensor 4, and a GPS receiver 5 that detects the position of the vehicle 40 based on radio waves from a satellite. is doing. Since these sensors 2, 3, 4, and 5 have errors of different properties, they are configured to be used while being complemented by a plurality of sensors. Depending on the accuracy, some of the above-described sensors may be used, and further, a steering rotation sensor or a wheel sensor of each rolling wheel, such as a vehicle speed sensor 23, may be used.

  As the operation switch group 7, for example, a touch panel 22 integrated with the display device 10 or a mechanical switch is used. The touch panel 22 is pressed when an electric circuit is wired on the screen of the display 10 in the X-axis direction and the Y-axis direction through a gap called a spacer on a glass substrate and a transparent film, and the user touches the film. Since the voltage value changes due to short-circuiting of a part of the wiring, a so-called resistance film method for detecting this as a two-dimensional coordinate value (X, Y) is widely used. In addition, using a so-called capacitance method, a substance that receives an electrical signal is applied to the glass surface of a transparent conductive substrate, and a change in capacitance is detected by the sensor as an electrical signal when a finger is brought close to the glass surface. Also good.

  In addition to the mechanical switch and the touch panel 22, a pointing device such as a mouse or a cursor may be used. It is also possible to input various instructions using the microphone 31 and the voice recognition unit 30. In this method, a voice signal input from the microphone 31 is processed by a known voice recognition technique in the voice recognition unit 30 and converted into an operation command corresponding to the result. The voice recognition unit 30 amplifies the voice signal input from the microphone 31 to an appropriate level, and after A / D converting the amplified voice signal, the voice is recognized by a voice recognition algorithm such as a known hidden Markov model. An audio signal processing device (DSP: Digital Signal Processor) for identifying, a memory or the like in which reference data for identifying audio is stored, and the DSP converts the audio signal into numerical information corresponding to the audio. After being converted, it is sent to the control circuit 8. Various instructions can be input by the operation switch group 7, the remote control terminal 12, and the microphone 31 which are also search condition setting means of the present invention.

  The transceiver 13 is a device for receiving road traffic information from, for example, a VICS (Vehicle Information and Communication System) center 14.

  Further, by communicating with an ETC (Automatic Toll Collection System, ETC: Electronic Toll Collection) vehicle-mounted device 16, the fee information received from the ETC road device (not shown) by the ETC vehicle-mounted device 16 is taken into the navigation device 100. be able to. Further, the ETC vehicle-mounted device 16 may be connected to an external network and communicate with the VICS center 14.

  The control circuit 8 which is a facility position detection means, a route search means and a cost-effectiveness calculation means of the present invention is configured as an ordinary computer, and is a well-known CPU 81, ROM 82, RAM 83, I / O 84 which is an input / output circuit, and these. A bus line 85 is provided for connecting the above configurations. The CPU 81 controls the navigation program 21p and data stored in the HDD 21. The CPU 81 controls the reading / writing of data to / from the HDD 21. The A / D conversion unit 86 includes a well-known A / D (analog / digital) conversion circuit, and converts analog data input from the position detector 1 or the like to the control circuit 8 into digital data that can be calculated by the CPU 81, for example. It is. The ROM 82 may store a program for performing a minimum necessary operation among the navigation functions when the HDD 21 fails.

  The image processing unit 87 which is a signboard information extracting unit of the present invention includes an image processing circuit that analyzes an image photographed by the camera 25 by a known technique such as pattern recognition.

  In addition to the navigation program 21p, the HDD 21 that is also the signboard information storage means of the present invention stores so-called map matching data for improving the accuracy of position detection, and map data 21m including road data representing road connections. . The map data 21m stores predetermined map image information for display and road network information including link information and node information. The link information is predetermined section information constituting each road, and includes position coordinates, distance, required time, road width, number of lanes, speed limit, and the like. The node information is information that defines an intersection (branch road) and the like, and includes position coordinates, the number of right / left turn lanes, a connection destination road link, and the like. In addition, data indicating whether or not traffic is possible is set in the inter-link connection information.

  In addition, in the HDD 21, auxiliary information for route guidance, entertainment information, and other data can be written independently by the user and stored as user data 21u. The user data 21 u can be rewritten by operating the operation switch group 7, the touch panel 22 and the remote control terminal 12, or by inputting voice from the microphone 31. Further, data and various information necessary for the operation of the navigation device 100 may be stored as the database 21d.

  The map data 21m and user data 21u can be added / updated from the storage medium 20 via the map data input device 6. The storage medium 20 is generally a CD-ROM or DVD based on the amount of data, but may be another medium such as a memory card.

  The non-volatile memory 9 is constituted by a rewritable semiconductor memory such as an EEPROM (Electrically Erasable & Programmable Read Only Memory) or a flash memory, and information and data necessary for the operation of the navigation device 100. Is remembered. The nonvolatile memory 9 is configured to retain the stored contents even when the accessory switch of the vehicle 40 is turned off, that is, the navigation device 100 is turned off.

  Further, information and data necessary for the operation of the navigation device 100 may be stored in the HDD 21 instead of the nonvolatile memory 9. Furthermore, information and data necessary for the operation of the navigation device 100 may be stored separately in the nonvolatile memory 9 and the HDD 21.

  The display 10 is formed of a known color liquid crystal display, and includes a dot matrix LCD (Liquid Crystal Display) and a driver circuit (not shown) for performing LCD display control. The driver circuit uses, for example, an active matrix driving method in which a transistor is attached to each pixel so that the target pixel can be reliably turned on and off, and is based on a display command and display screen data sent from the control circuit 8. To display. An organic EL (ElectroLuminescence) display or a plasma display may be used as the display.

  The speaker 15 is connected to a known voice synthesis circuit 24 connected to the I / O 84 of the control circuit 8, and the digital voice data stored in the nonvolatile memory 9 or the HDD 21 is converted into an analog voice by the voice synthesis circuit 24 according to a command from the navigation program 21 p. The one converted to is sent. Note that the speech synthesis method includes a recording / editing method in which speech waveforms are stored as they are or after being encoded and connected as necessary.

  The vehicle speed sensor 23 includes a rotation detection unit such as a known rotary encoder. For example, the vehicle speed sensor 23 is installed in the vicinity of the wheel mounting unit to detect the rotation of the wheel and send it to the control circuit 8 as a pulse signal. In the control circuit 8, the number of rotations of the wheel is converted into the speed of the vehicle 40 to calculate an expected arrival time from the current position of the vehicle 40 to a predetermined place, or an average vehicle speed for each travel section of the vehicle 40. To do.

The external device connection device 26 includes an input / output circuit and a connector for connecting to external devices such as sensors and other control devices so as to be able to transmit data. It has a configuration capable of realizing at least one of the following functions.
(1) Connection of a data backup device for backing up the contents stored in the nonvolatile memory 9 or the HDD 21.
(2) In-vehicle LAN (Local Area Network) communication interface circuit for data transmission with other in-vehicle devices.
(3) External network connection via the mobile phone 17.

  In addition, data acquisition from the vehicle speed sensor 23 or connection to the ETC vehicle-mounted device 16 may be performed via the external device connection device 26.

  With this configuration, when the navigation program 21p is activated by the CPU 81 of the control circuit 8, the navigation device 100 allows the user to operate the operation switch group 7, the touch panel 22, the remote control terminal 12, or from the microphone 31. When route guidance processing for displaying the destination route on the display 10 is selected from a menu displayed on the display 10 by voice input, the following processing is performed.

  That is, when the user selects a point from a point or facility search or address search on the map, a registered point set by the user, etc. and sets it as a destination, the position detector 1 determines the current position of the vehicle 40, A process for obtaining an optimum guide route from the current position to the destination is performed. Then, the guidance route is displayed on the road map on the display 10 so as to guide the user to the appropriate route. As a method for automatically setting an optimum guide route, a method such as the Dijkstra method is known. In addition, at least one of the display 10 and the speaker 15 provides a guidance according to an operation or a message according to an operation state.

  A process for recording signboard information photographed by the camera 25 will be described with reference to FIG. This process is included in the navigation program 21p and is repeatedly executed together with other processes. First, an information collection mode for photographing and recording signboard information is started by operation of the operation switch group 7, the touch panel 22, the remote control terminal 12, or voice input from the microphone 31 (S1: Yes).

  When the information collection mode is started, the camera 25 is activated to photograph the roadside. The captured video data is sent to the control circuit 8 together with the position data of the vehicle 40 detected by the position detector 1 (S2).

  The video data is converted into digital multi-valued image data for each pixel by applying a general binarization process to the video signal in the image processing unit 87. Then, from the obtained multi-valued image data, it is determined whether a signboard, bag, etc. is included using a general image processing technique. If a signboard, bag, etc. is included, fee information, product, or Extract information about service content and period.

  The position from which the information is extracted can be specified from the position data of the vehicle 40 detected by the position detector 1, and the store or facility that is the provider of the extracted information is specified from the position and the map data 21m. be able to.

  The extracted signboard information is stored in a predetermined area in the database 21d of the HDD 21 (S3). FIG. 5 shows an example of signboard information. The signboard information is classified and stored, for example, by store / facility name, product or service content, fee, period, day of the week, and time. Further, the signboard information may be stored in the nonvolatile memory 9.

The signboard information extraction conditions are as follows.
(1) The price is clearly stated. For example, “Today's price“ 116.50 yen / L ””, “Lunchtime 100 yen discount for all items”, “Adult hair 1800 yen”, etc.
(2) The fee is not specified, but information equivalent to the fee is included. For example, “Summer sale until August 31”, “Summer sale 2 discounts for all products until August 31”, etc.

  A predetermined time has elapsed since the start of the information collection mode, a predetermined distance has elapsed since the start of the information collection mode, or a condition for ending the information collection mode is established when the user operates the touch panel 22 (S4). If it has been done (S5: Yes), the camera 25 ends the shooting and returns from the information collection mode to the normal operation mode of the navigation device 100.

  The process of searching for a store / facility using signboard information will be described with reference to FIG. This process is included in the navigation program 21p and is repeatedly executed together with other processes. First, a destination search menu screen as shown in FIG. 6 is displayed on the display unit 10 by operating the operation switch group 7, the touch panel 22, the remote control terminal 12, or by voice input from the microphone 31. This display screen is a general function of the navigation device 100.

  Next, in order to search for a gas station, for example, when the “Search by Genre” button is pressed in FIG. 6 and the “Gas Station” button is pressed in FIG. 7, the signboard information is used as shown in FIG. A screen for selecting whether to display is displayed.

  When the “not used” button is pressed on the screen of FIG. 8 (S11: No), the destination is selected by the above-described normal navigation device 100 destination search method, and the route to the destination is searched. (S19).

On the other hand, when the “use” button is pressed on the screen of FIG. 8 (S11: Yes), a search condition input screen is displayed as shown in FIG. 9, and the search condition is input (S12). Search conditions include, for example, the following for a gas station search.
(1) Charges stored in the database 21d.
(2) Contents of goods or services stored in the database 21d (car wash, oil change, etc.).
(3) Charges and contents of goods or services (so-called cost-effectiveness).

  For example, if there are two signs of “car wash 300 yen” and “car wash and WAX 400 yen”, the price per product or service is 300 yen for the former and the latter is The price is 200 yen, and the latter seems cheap. However, the latter feels expensive for users who do not need WAX. The price per such product or service, and whether the content of the product or service is commensurate with the price. When searching for a family restaurant, not only the low price but also the content of the meal (Western, Japanese, ingredients, number of items, etc.) and the price (XX yen, △ discount, XX yen discount) The condition is that it has the best value for the taste.

The cost effectiveness is obtained, for example, from at least one or a combination of the following criteria based on the charges stored in the database 21d and the contents of the goods or services.
(1) Fee: The lower the fee, the higher the cost effectiveness.
(2) Number of goods or services: The more goods or services, the more cost-effective.
(3) Contents of goods or services: The more cost-effective the more the terms of the goods or services contain the words “quality”, “handmade”, etc.
(4) Discount rate: The higher the discount rate, the higher the cost effectiveness.
(5) Store / facility ratings: The higher the rating, the higher the cost-effectiveness.
(6) User preference: The closer to the user preference, the higher the cost-effectiveness. The user's preference is set for each genre of facility / store or for each item such as a charge.

  For example, when the discount rate is high in a store with a high rating, it is determined that the cost-effectiveness is higher than “50 yen discount” in a popular store.

  You may memorize | store the price of the item used as what is called a consumer price index, such as food, clothing, and food and drinks of a family restaurant, in the database 21d, and you may use it as a reference | standard which judges a price feeling. It is desirable to update the price data of these items periodically. As an update method, there are a method of updating from the storage medium 20 via the map data input device 6, a method of downloading and updating data via an external network, and the like. .

  The above cost-effectiveness criteria are stored in the database 21d or the non-volatile memory 9 in numerical form such that the higher the cost-effectiveness, the higher the points, and the points for each of the criteria according to the signboard information of the store / facility And the store / facility with a high sum may be determined to have high cost effectiveness.

  When the search condition is input (S13: Yes), the nearest gas station is searched with reference to the database 21d based on the current position of the vehicle, and the search result is displayed in a list as shown in FIG. In the example of FIG. 10, the search condition is not particularly defined, and the nearest gas station of the vehicle is searched using the signboard information. When the “fee” button is pressed on the display screen of FIG. 9, gas stations are searched and displayed in ascending order of the fee.

  When a gas station (destination) for which guidance is desired is selected from the search result list of FIG. 10, a screen as shown in FIG. 11 is displayed. When the “Yes” button is pressed, a guidance route to the destination is searched (S14). ), A guidance route is displayed on the screen of the display 10 (S15). When the user travels on the displayed guide route (S16: Yes), route guidance is performed until the destination arrives (S18: Yes) according to the guide route (S17).

  On the other hand, when the user does not want to travel on the displayed guide route (S16: No), the display returns to the display screen of FIG. The search condition is re-input (S12).

  Although the embodiments of the present invention have been described above, these are merely examples, and the present invention is not limited to these embodiments, and the knowledge of those skilled in the art can be used without departing from the spirit of the claims. Various modifications based on this are possible.

The figure which shows the example of attachment of a camera. The block diagram which shows the structure of a vehicle-mounted navigation apparatus. The flowchart for demonstrating the process which records signboard information. The flowchart for demonstrating the process which searches a shop / facility using signboard information. The figure which shows an example of the memory content of signboard information. The figure which shows an example of the destination setting screen. The figure which shows an example of the search screen classified by genre. The figure which shows an example of the selection screen which searches a shop and a facility using signboard information. The figure which shows an example of the screen which sets the conditions of signboard information. The figure which shows an example of the display of the search result using signboard information. The figure which shows an example of the screen which determines the destination from a search result.

Explanation of symbols

1 Position detector (vehicle position detection means)
7 Operation switch group (search condition setting means)
8 Control circuit (facility location detection means, route search means, cost effectiveness calculation means)
9 Nonvolatile memory 10 Display 12 Remote control terminal (search condition setting means)
21 Hard disk device (signboard information storage means)
22 Touch panel (search condition setting means)
25 Camera (photographing means)
31 Microphone (Search condition setting means)
40 Vehicle 87 Image processing section (signboard information extraction means)
100 Car navigation system

Claims (7)

Photographing means for photographing the surroundings of the vehicle;
Signboard information extraction means for extracting signboard information including at least fee information related to goods or services from the captured image data;
Vehicle position detection means for detecting the position of the vehicle in which the signboard information is photographed;
Facility position detection means for detecting the position of the facility that is the provider of the signboard from the extracted signboard information and the detected vehicle position;
Signboard information storage means for storing the extracted signboard information and the position of the detected facility;
A vehicle-mounted navigation device comprising:   The in-vehicle navigation device according to claim 1, wherein the signboard information includes at least one of contents of the product or service and a date and time when the product or service is provided. A route search means for searching for a guide route to the destination;
Search condition setting means for setting conditions for searching the guide route,
The in-vehicle system according to claim 1 or 2, wherein the fee information is set as a search condition in the search condition setting means, and the route search means searches for a facility stored in the signboard information storage means based on the search conditions. Navigation device.   The in-vehicle navigation device according to claim 3, wherein the search condition setting means sets at least one of the contents of the product or service and the date and time when the product or service is provided as a search condition. Cost-effectiveness calculating means for calculating the cost-effectiveness of the product or service from the content of the product or service and the charge of the product or service,
The calculated cost effectiveness is set as a search condition in the search condition setting means, and the route search means searches for a facility stored in the signboard information storage means based on the search condition. The in-vehicle navigation device described in 1. Photographing means for photographing the surroundings of the vehicle;
Signboard information extracting means for extracting signboard information including the contents relating to the product or service, and the date and time when the product or service is provided, from the captured image data;
Vehicle position detection means for detecting the position of the vehicle in which the signboard information is photographed;
Facility position detection means for detecting the position of the facility that is the provider of the signboard from the extracted signboard information and the detected vehicle position;
Signboard information storage means for storing the extracted signboard information and the position of the detected facility;
A vehicle-mounted navigation device comprising: A route search means for searching for a guide route to the destination;
Search condition setting means for setting conditions for searching the guide route,
The in-vehicle navigation system according to claim 6, wherein the signboard information is set as a search condition in the search condition setting means, and the route search means searches for a facility stored in the signboard information storage means based on the search conditions. apparatus.

Images