JP3769867B2 - Navigation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation device, and more particularly to a navigation device with improved navigation setting operation.
[0002]
[Prior art]
2. Description of the Related Art Navigation devices that provide route guidance to destinations for drivers who are not guided by geography are widely used. In this navigation device, when a destination is input, a travel route from the current position of the vehicle to the destination is searched, and the driver is guided along the searched route. The travel route guidance is such as displaying the travel route searched, the current position of the vehicle, and an arrow indicating the traveling direction on the display device together with the road map for guidance, approaching the intersection where the route should be changed, the route changing direction, etc. Is guided by voice output.
In order to receive route search and route guidance by such a navigation device, it is necessary to set a destination to be guided. To set the destination, the menu key of the normal display device is pressed to display the menu screen, and then the destination setting key displayed on the menu screen is pressed to display the destination setting screen. In the following, the map screen around the destination is displayed by selecting each layered screen in sequence, and the destination is set by setting a specific point on the displayed map screen. .
[0003]
[Problems to be solved by the invention]
As described above, in the conventional navigation apparatus, an operation for setting a destination is always required when receiving route guidance. However, in many cases, a home vehicle or a company vehicle has a specific point (referred to as a return point) that always returns after traveling. If it is a vehicle for home use, it is used for going out from home or commuting, and usually returns to the home which is a return point during the same day or several days later. The same applies to company cars used for transportation at companies, etc., and departure points such as garages and parking lots are return points. Also, if you stay at a certain hotel for a few days on a trip, you will always return to the hotel parking lot, which is the return point during the stay period.
In this way, even if each vehicle always has a specific return point, when setting a route with a conventional navigation device, the destination must be set even if the destination is a return point such as a home or company. It was necessary to perform the operation.
[0004]
Incidentally, some conventional navigation devices have a point registration function for registering a destination once set in advance for re-use. Once this point is registered, it is not necessary to set the destination after calling the map screen at the lowest layer, and the destination setting operation is simplified.
However, even when setting a registered location as a destination by this location registration, the list of registered homes and companies, etc. is called by performing key designation operations multiple times from the menu screen, and the required location is selected from among them. It was necessary to select as the ground. When a return point with a high use frequency within a certain period is set as the destination, even if the point is registered, it is necessary to repeat the same operation every time, which is troublesome.
[0005]
Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide a navigation device that does not require a destination setting operation for a return point.
[0006]
[Means for Solving the Problems]
In the first aspect of the present invention, destination setting means for setting a destination, destination storage means for storing the destination set by the destination setting means, and a specific point that returns after the vehicle travels. Return point storage means for storing as a return point, and when the ignition is turned on at a place other than home and the destination is not set, guidance to the destination is completed, or the current location is displayed only When the apparatus is in operation, a judging means for judging whether or not any of the cases is applicable, and when the judgment means judges that any of the above cases is applicable, the return point storage means The destination automatic setting means for automatically setting the return point stored in the destination as the destination and storing it in the destination storage means, and the travel route to the destination stored in the destination storage means The route search means for searching for the vehicle, the current position detection means for detecting the current position of the vehicle, and the travel route searched by the route search means according to the current position of the vehicle detected by the current position detection means The route guidance means is provided in the navigation device to achieve the object.
According to a second aspect of the present invention, the navigation device according to the first aspect further comprises point registration means for preregistering a point set as a destination or a relay point, and the return point storage means is a return point. The destination automatic setting means stores the home registered by the point registration means when the return point is not registered in the return point storage means. A return point is automatically selected, and the return point is stored in the destination storage means as a destination.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the navigation device of the present invention will be described in detail with reference to FIGS. 1 to 6.
(1) Outline of the embodiment
In the present embodiment, from the viewpoint that the vehicle always returns to a specific return point such as home, in the following cases, the destination is set for the return point by the driver by automatically setting the return point as the destination. Is unnecessary. As a result, when the return point is the destination, the driver does not need to repeat the destination setting operation each time, and the trouble of inputting the destination is eliminated.
Here, as a case where the return point is automatically set as the destination, for example, (a) the ignition is turned on at a place other than the home, and when the destination is not set in particular, (b) the guidance to the destination ends. (C) The case where the navigation device is operating in the state where only the current location is displayed corresponds.
The return point is selected from the registered points, but if the return point is not selected, the registered home is automatically selected as the return point. .
[0008]
(2) Details of the embodiment
FIG. 1 is a block diagram showing the configuration of the navigation device of this embodiment.
The navigation device shown in FIG. 1 performs normal route guidance processing by navigation, control / calculation processing of the entire device, registration of points according to the present embodiment, selection of return points, automatic destinations by return points. A navigation processing unit 1 that performs various processes such as a registration process is provided.
The navigation processing unit 1 includes a CPU (Central Processing Unit) 10 that performs each of these processes. The CPU 10 includes a ROM 12, a RAM 13, a recording medium driving device 14, and a bus line 11 such as a data bus and a control bus. The audio processing unit 15, the communication unit 16, and other units not shown are connected.
The ROM 12 is a read-only memory in which various data and programs for control by the CPU 10 are stored in advance.
[0009]
The RAM 13 is a random access memory that the CPU 10 uses as a working memory. Various areas such as a destination area are secured in the RAM 13.
In the destination area, coordinates (latitude, longitude) corresponding to the destination set by the user or the destination (= regression point) automatically set according to the present embodiment are stored. In this destination area, in addition to the destination as the final point, coordinates of a relay point (route point) are also stored.
The relay point of the coordinates stored in this destination area and the route to the destination are searched.
[0010]
In the navigation processing unit 1 of the present embodiment, the CPU 10 reads various programs stored in the ROM 12 and executes various processes. The CPU 10 reads a computer program from an external recording medium set in the recording medium driving device 14 and stores (installs) the computer program in a storage device such as a hard disk (not shown) connected by the bus line 11. A necessary program or the like may be read into the RAM 13 and executed. Further, a necessary program or the like may be directly read from the recording medium driving device 14 into the RAM 13 and executed without being stored in a storage device (not shown) of the navigation processing unit 1.
[0011]
The voice processing unit 15 performs control in the case where route guidance of the vehicle is performed by voice output from the voice output device (speaker) 7. A volume control unit 17 that adjusts the volume of the voice guidance is connected between the voice processing unit 15 and the voice output device 7. The volume adjusting unit 17 is adapted to be automatically adjusted by the audio processing unit 15 in addition to the volume being adjusted by a manual operation by the operator.
The communication unit 16 is connected to a mobile phone 6 composed of various wireless communication devices. The communication unit 16 communicates with information providing stations that provide data related to traffic information such as road congestion and traffic regulations, in addition to telephone line calls, and karaoke data used for communication karaoke in the car. Communication with the provided information providing station can be performed.
[0012]
The recording medium driving device 14 is a driving device used to read a computer program for the CPU 10 to perform various processes from an external recording medium. The computer program recorded on the recording medium includes various programs, data, and the like, but is a program for various processes such as automatic destination setting by a return point, which is executed by the navigation device of the present embodiment. , And dictionaries, data, etc. used therein.
Here, the recording medium refers to a recording medium on which a computer program is recorded. Specifically, a magnetic storage medium such as a floppy disk, a hard disk, or a magnetic tape, a semiconductor storage medium such as a memory chip or an IC card, a CD- ROM, MO, PD (phase change rewritable optical disc) and other optical storage media, paper cards, paper tapes, and paper such as printed materials for reading programs using character recognition devices (and paper Recording medium using a medium having a corresponding function) and other recording media on which a computer program is recorded by various methods. As a recording medium used in the navigation processing unit 1 of the present embodiment, a CD-ROM or a floppy disk is mainly used.
In addition to reading the computer program from these various recording media, the recording medium driving device 14 reads the data of the RAM 13 and the data file device 4 when the recording medium is a writable recording medium such as a floppy disk. It is possible to write on a recording medium.
[0013]
As shown in FIG. 1, an input device 2, a current position detection device 3, a data file device 4, a display device 5, a mobile phone 6, an audio output device 7, and other various devices (not shown) are connected to the navigation processing unit 1. Has been.
The input device 2 is used for inputting the current location (departure point) and destination (arrival point) when the vehicle starts to travel, as well as the type (model) of the mobile phone 6, etc. Various devices such as a mouse, a light pen, a joystick, and a voice recognition device can be used.
The input device 2 may be provided with a remote controller that uses infrared rays or the like and a receiver that receives various signals transmitted from the remote controller. On the remote control, in addition to the joystick for moving the cursor displayed on the screen, etc., the menu designation key (button), the numeric keypad, and the route search to the return point set automatically according to the present embodiment are started. Various keys such as a return point route search key (button) to be arranged are arranged.
[0014]
The current position detection device 3 is for detecting the absolute position (by latitude and longitude) of the vehicle, and includes a GPS (Global Positioning System) receiver 31 that measures the position of the vehicle using an artificial satellite, A beacon receiving device 32 that receives position information from a beacon arranged at, a direction sensor 33, a distance sensor 34, and a rudder angle sensor 35 are used.
The GPS receiver 31 and the beacon receiver 32 can measure the position independently, but in a place where the GPS receiver 31 and the beacon receiver 32 cannot receive, both the direction sensor 33 and the distance sensor 34 are used. The current position is detected by dead reckoning navigation.
The azimuth sensor 33 is, for example, a geomagnetic sensor that detects the azimuth of the vehicle by detecting geomagnetism, a gyroscope such as a gas rate gyroscope or an optical fiber gyroscope that detects the rotational angular velocity of the vehicle and integrates the angular velocity to determine the azimuth of the vehicle, A wheel sensor is used that calculates the amount of displacement in the azimuth by detecting the turning of the vehicle based on the output pulse difference (movement distance difference).
For the distance sensor 34, for example, various methods are used such as detecting and counting the number of rotations of the wheel, or detecting acceleration and integrating twice.
The rudder angle sensor 35 detects the steering angle α using an optical rotation sensor, a rotation resistance volume, or the like attached to the rotating portion of the steering. The steering angle α detected by the steering angle sensor 35 is used for determining the imaging timing in the present embodiment in addition to the detection of the current position.
[0015]
As shown in FIG. 1, the data file device 4 includes a communication area data file 41, a drawing map data file 42, an intersection data file 43, a node data file 44, a road data file 45, a search data file 46, a photo data file 47, A sights guide data file 48 and a registration point data file 49 are provided.
As the data file device 4, for example, various storage media such as a floppy disk, a hard disk, a CD-ROM, an optical disk, a magnetic tape, an IC card, an optical card, and a driving device thereof are used.
The data file device 4 may be composed of a plurality of different types of storage media and driving devices. For example, the search data file 46 and the registration point data file 49 are configured by a readable / writable storage medium (for example, a flash memory) and its driving device, and the other files are configured by a CD-ROM.
[0016]
In the communication area data file 41, the area where the mobile phone 6 can communicate from the inside of the vehicle is displayed on the display device 5, or the communication area data used for route search for the area where the mobile phone 6 can communicate is the type of the mobile phone 6. Stored separately. Each communication area data for each type of the mobile phone 6 is numbered and managed so as to be easily searched, and the communicable area can be expressed by the inner side surrounded by the closed curve. It is divided into minutes and specified by the position data of the bending point. Note that the communication area data may be generated by dividing the communicable area into large and small square areas and using the coordinate data of two points in a diagonal relationship. The content stored in the communication area data file 41 is preferably able to be updated as the usable area of the mobile phone 6 expands or contracts. For this purpose, the mobile phone 6 and the communication unit 16 are used. Communicating with the information providing station, the contents of the communication area data file 41 can be updated with the latest data. The communication area data file 41 may be composed of a floppy disk, an IC card, etc., and rewritten with the latest data.
The drawing map data file 42 stores drawing map data to be drawn on the display device 5. The drawing map data stores a hierarchical map, for example, map data for each hierarchy such as Japan, Kanto region, Tokyo, Kanda from the highest layer. Map data is attached to each level of map data.
[0017]
The data file used for the route search is road network data including intersection data, node data, and road data stored in the intersection data file 43, the node data file 44, and the road data file 45, respectively.
The intersection data file 43 includes intersection numbers, intersection names, intersection coordinates (latitude and longitude), road numbers starting and ending at the intersection, and presence / absence of signals as intersection data. Stored.
The node data file 44 stores node data composed of information such as latitude and longitude specifying the coordinates of each point on each road. That is, this node data is data relating to a single point on the road. When a node connecting nodes is called an arc, it is expressed by connecting each of a plurality of node rows with an arc. In addition, node data for specifying the coordinates of each famous place in the famous places described later is also stored.
[0018]
The road data file 45 includes a road number for identifying each road, an intersection number as a start point and an end point, a road number having the same start point and end point, road thickness, prohibition information such as entry prohibition, and photo data described later. Photo number etc. are stored.
The search data file 46 stores intersection sequence data, node sequence data, and the like constituting the route generated by the route search. The intersection string data includes information such as an intersection name, an intersection number, a photo number showing a characteristic landscape of the intersection, a turning angle, and a distance. The node string data includes information such as east longitude and north latitude indicating the position of the node.
In the photo data file 47, photographs of characteristic intersections and the like that can be seen while traveling straight at each intersection are stored in digital, analog, or negative film format corresponding to the photograph numbers.
The sights guidance data file 48 stores data for guiding each sight, and stores image data based on photographs and illustrations relating to the scenery of each sight, and character data and audio data relating to the description of the sight. Yes.
[0019]
The registered point data file 49 stores registered point data regarding various points set as destinations, relay points, etc. in addition to the home.
The point registration file 49 stores the return point data when the return point is selected according to the present embodiment.
FIG. 2 shows the contents of the registration point data stored in the registration point data file 49.
As shown in this figure, as registration point data, data such as a point number, a mark number, a name, a telephone number, a position, whether or not a regression point is selected, and a special purpose are used.
[0020]
The spot number is a number representing the registered spot, and numbers from 00 to 99 are attached to 100 registrations. The point number 00 is determined in advance at home.
The mark number is a mark number as a pictograph to be displayed on the road map, and a plurality of pictographs such as a house, a hotel, a station, etc. are created in advance.
The name and telephone number are the name and telephone number of the point. Name and phone number, if a designated facility or place is designated as a registration point, the facility name (XX hotel, XX station, △ petroleum, □ police, XX temple, XX hospital, etc.) When the place name (Tokyo Chuo Park, Shinjuku Gyoen, etc.) and its phone number are automatically entered and other points are specified on the map screen, the address of the registered point (such as near Bunkyo-ku, Tokyo) The phone number entered by the user is entered. The name can be changed as appropriate by the user.
As the position, coordinates (latitude, longitude) of the registered point are input as position data.
As for the presence / absence of the return point selection, one of all registered points is set as the return point. Therefore, when the return point is changed, the selection of the previous return point is canceled. “1” is stored in the registration point set as the return point, and “0” is stored in the registration point not set. As for the selection of the return point, if no operation such as change or cancellation by the user is performed, the home is automatically selected as the return point.
As a special use, there is a detour point when registering a point where the user does not want to travel.
[0021]
The display device 5 displays various images and character information in addition to a normal route guidance road map, and various display devices such as a liquid crystal display device and a CRT are used.
The mobile phone 6 is connected between other mobile phones and information providing stations mainly by high-speed communication of 9600 bps or 19200 bps via a digital mobile communication network, but other communication methods are used. May be. For example, communication may be performed via various data communication networks such as ISDN (Integrated Services Digital Network), normal telephone line network, Internet, FAX communication network, PHS, wireless satellite communication, and optical communication. Note that the communication speed of the mobile phone 6 may be automatically set according to the communication capability of the mobile phone 6 or the communication unit 16.
The voice output device 7 is composed of a plurality of speakers arranged in the vehicle, and outputs voice when performing voice route guidance. The audio output device 7 may also be used as an audio speaker.
[0022]
Next, the operation of the navigation device of this embodiment configured as described above will be described.
In the present embodiment, the return point that is automatically set as the destination is selected from the registered points registered (if the user selects any registered point and the user does not select it) Therefore, the location registration operation as a premise thereof will be described in accordance with the display screen of the display device 5 shown in FIGS.
[0023]
First, an input button key of the input device 2 arranged around the display device 5 or an input button key of a remote controller (not shown) is operated to display the menu screen shown in FIG. Of the touch keys displayed on the menu screen, the destination setting key 531 is a key used when a point other than the return point is set as the destination. The point registration key 532 is a key used when registering a destination in the memory or selecting a registered point that has already been registered as a return point. The return point route search key 533 is a key for immediately starting a route search to the return point automatically set as the destination according to the present embodiment.
[0024]
On this menu screen, the spot registration key 532 is touched to display the spot registration screen shown in FIG. Among the touch keys displayed on the point registration screen, the place name index key 534 is a key for displaying a map of a desired area from various place names on the screen. By touching this key, an address key, a station key A place name index screen on which a plurality of lower-layer keys such as an office key, an intersection key, an airport / port key, a police station key, an IC / SA / PA key, a pay IC key, and a hospital key are displayed.
The home key is a key for displaying a map in the vicinity of the home where the location is already registered, and the current location surrounding key is a key for displaying a map around the current location of the vehicle detected by the current location detecting device 3.
The registered point key 535 is a key for displaying a map around the registered points already registered in the registered point data file 49. When this key is touched, a list of each registered registered point is displayed on the screen. A map around the specified registration point is displayed on the screen.
The national map key is used to specify a region (Kanto, Tokai, Kansai, etc.) divided into a predetermined area of the national map of Japan, and specify a point by displaying a detailed map sequentially from the map of that range. It is a key to do.
The telephone number key is a key for displaying a map around the area corresponding to the area code on the screen.
[0025]
By sequentially designating (touching) any of the keys displayed on the point registration screen in FIG. 3B, a map for a predetermined area is displayed on the screen as shown in FIG. On this screen, the cursor mark 537 is moved to the position where the point registration is desired. The cursor mark 539 is moved in the direction of the arrow by touching eight triangular arrows 538 arranged around the cursor mark 539.
Touching the point set key 539 after moving the cursor mark 537 to a desired point, designation of the point number (unused number from 01 to 99) indicating the point to be registered, and the pictograph mark displayed on the map A screen (not shown) for specifying a number is displayed. When the spot number and the mark number after are designated on this screen, a spot confirmation screen is displayed as shown in FIG. 4D, and a pictograph 541 corresponding to the mark number is displayed at the spot designated by the cursor mouse 537. .
When the no key 542 is touched on this point confirmation screen, the screen returns to the previous screen in FIG.
[0026]
When the YES key 543 is touched, the designated registration point is confirmed, and a registration confirmation screen for displaying a part of the registration content is displayed on the display device 5 as shown in FIG. Then, the spot number, mark number, and coordinates (latitude, longitude) of the registered spot are stored in the spot data file 49. At this time, if a specified facility or place is designated as a registration point, the name of the facility (Akasaka Prince Hotel, etc.), the name of the place (Tokyo Chuo Park, etc.) and its telephone number are entered, and other points are mapped. When designated from the screen, the address of the registration point (near Matsubara Yubata, Ito City, Shizuoka Prefecture) and the telephone number entered by the user are entered. In this screen, the user can change the name as appropriate. For example, the name “Near Nishionuma, Sagamihara City, Kanagawa Prefecture” can be changed to “X's house”.
[0027]
In the initial state where no location registration has been made, no return point is set, but as shown in the registration confirmation screen in FIG. When the return point is released, the home is automatically selected as the return point, and “return point” is displayed in the corresponding column 546.
In this state, touching the column 547 on the right side of the point “Near Akasaka Prince Hotel” with the point number 03 newly registered, as shown in FIG. 4 (F), the return point is changed from the home to the point 03, The display of “return point” also moves from the column 546 to the column 547. Along with this, the registration point data stored in the registration point data file 49 is also changed from “1” to “0” in the column of presence / absence of the return point of the home (point number 00), and the return of the point number 03 The presence / absence column is changed from “0” to “1”.
[0028]
In addition to the operation of selecting a return point subsequent to the operation of registering the points described above, as shown in FIG. 5, the desired one of the registered points already registered during the destination setting operation is desired. May be selected as the return point.
That is, by touching the destination setting key 531 from the menu screen of FIG. 5A, the destination setting screen of FIG. 5B is displayed, and by further touching the registration point key 553, FIG. Display the registration point screen. By touching a field 555 on this registration point screen, the selection of the return point can be changed from the Akasaka Prince Hotel at point 03 to the vicinity of Matsubara Yubatacho, Ito City, Shizuoka Prefecture, at point 01. By changing the return point, the display of “return point” moves from the column 556 to the column 555 as shown in FIG.
In addition, on the display screen of FIG. 5C in which “Akasaka Prince Hotel” at point 03 is selected as the return point, touching the column 556 displaying “return point” returns the return point of point 03 Is canceled and home is automatically selected as the return point.
[0029]
Next, the processing of automatically setting a return point as a destination according to the present embodiment when there is a return point (home or other registered point) selected in advance as described above will be described with reference to the flowchart of FIG. The description will be given with reference. This process is a process after the ignition is turned on.
First, the CPU 10 determines whether or not it is immediately after the ignition is turned on (step 10). If it is immediately after the ignition is turned on (; Y), the current position of the vehicle is detected from the current position of the vehicle detected by the current position detection device 3. Is determined to be a return point (step 11). If it is in the vicinity of the return point (step 11; Y), there is no point in setting the destination, and the process returns to the main routine. On the other hand, when the vehicle position is not near the return point (step 11; N), the process proceeds to step 15. In addition, as a judgment whether it is in the vicinity of a return point, if it is less than 300m in a linear distance, it will be judged that it is near a return point, but it is good also as a judgment standard within 500m, 1Km, and 100m.
[0030]
If not immediately after the ignition is turned on (step 10; N), it is further determined whether or not the navigation device is in operation (step 12). If the navigation device is not in operation (step 12; N), the main routine is entered. Return.
On the other hand, if the navigation device is in operation (step 12; Y), it is further determined whether or not the guidance to the destination is complete (step 13). If the guidance is complete (step 13; Y). ), And proceeds to step 15.
If the guidance to the destination is not completed (step 13; N), it is further determined whether or not only the current location of the vehicle is displayed on the map of the display device 5 (step 14). . If it is not only the current location display (step 14; N), that is, if the search route to the destination is being guided by voice or the guidance display screen of the display device 5, the route guidance etc. is continued as it is. Return to the main routine as soon as possible.
On the other hand, if only the current location is displayed (step 14; Y), the process proceeds to step 15.
[0031]
Through the above processing, (a) when the ignition is turned on at a place other than home and the destination is not set in particular, (b) when the guidance to the destination is finished, (c) the current location display only When the navigation device is operating, the process proceeds to step 15 in each case, and the return point is automatically set as the destination (step 15).
That is, the CPU 10 accesses the registration point data file 49 of the data file device 4 and searches for a point number in which “1” is stored in the column of presence / absence of the return point, and the position data (latitude, longitude) of the registration point. ) And is stored in the destination area of the RAM 13.
After performing the process of step 15 described above, the CPU 10 returns to the main routine.
[0032]
As described above, according to the present embodiment, the return point is automatically set as the destination without the user performing a special destination setting operation. For this reason, the destination setting operation in the case of having the route guidance with the return point as the destination becomes unnecessary.
Therefore, when returning to various return points such as a home, a company parking lot, or a hotel parking lot at a travel destination, the return to the menu screen shown in FIG. By simply touching the point route search key 533, the route search with the return point as the destination can be started immediately.
[0033]
In this embodiment, since the position data of the destination including the return point is stored in the destination area of the RAM 13, the destination data stored with the ignition off is also deleted. However, there is no particular problem because the return point is immediately reset as the destination at the next ignition on.
However, in the present invention, the position data of the destination including the return point may be stored not in the RAM 13 but in a storage medium such as a flash memory that does not disappear even when the ignition is turned off.
[0034]
Although one embodiment of the navigation device has been described above, the present invention is not limited to this embodiment, and various modifications can be made within the scope described in the claims.
For example, in the described embodiment, the case where the vehicle position where the ignition is turned on is not set automatically as the destination when the vehicle position is in the vicinity of the return point has been described. You may make it set a point as a destination. In this case, the destination is stored in the destination area of the RAM 13 as a relay point by the user, and the route of return point (departure point) → route point 1 (the destination set by the user) → return point is searched.
[0035]
Further, in the embodiment described above, one of the registered points (00 to 99) registered in advance is selected as the return point that is automatically set as the destination. You may make it register a point. In this case, a regression point data file is provided in the data file device 4 in addition to the registered point data file 49.
[0036]
Further, in the embodiment described above, the point registration operation as a premise for selecting a return point has been described. However, the procedure of this point registration operation and the display screen of the display device 5 (FIGS. 3A, 3B, and 3C). 4D, 4E, and 4F are not limited to the embodiment, and other operation procedures and operation screens may be used. For example, a return point selection key for immediately displaying a screen for selecting a return point from registered points may be arranged on the menu screen, and this return point selection key is an independent button key. As one of various input keys arranged around the display screen of the display device 5, the button key may be arranged on the remote controller.
As for the point registration operation screen, as described in each of the screens shown in FIGS. 3 and 4, an operation for designating a point on the map after designating predetermined operation contents such as point registration and destination setting. Although the procedure is described, an operation procedure and operation screen may be used in which a point on the map is specified and then the purpose of use of the point, that is, destination setting, point registration, selection of a return point, and the like are specified.
[0037]
【The invention's effect】
According to the present invention, a specific point that returns after the vehicle travels is stored in the return point storage means as a return point, and the ignition is turned on at a place other than the home, and the destination is not set in particular. When it is determined that the navigation device is operating in the state where only the current location is displayed and the navigation device is operating, the return point is automatically set as the destination and the destination memory is stored. Since it is made to memorize | store in a means, the destination setting operation which sets the return point by a driver | operator as a destination becomes unnecessary.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a navigation device according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing the contents of registered spot data stored in a registered spot data file of the navigation device.
FIG. 3 is a part of an explanatory diagram showing a display screen corresponding to point registration and return point selection operations in the navigation device.
FIG. 4 is another part of the explanatory diagram showing the display screen corresponding to the point registration and return point selection operations in the navigation device.
FIG. 5 is an explanatory diagram showing a display screen corresponding to an operation when a return point is selected via a destination setting operation in the navigation device.
FIG. 6 is a flowchart showing processing for automatically setting a return point as a destination by the navigation device.
[Explanation of symbols]
1 Navigation processing part
10 CPU
12 ROM
13 RAM
14 Recording medium drive
15 Voice processing part
16 Communication Department
2 input devices
3 Current position detection device
4 Data file device
49 Registration point data file
5 display devices
6 Mobile phones
7 Audio output device

Claims (2)

Destination setting means for setting the destination;
Destination storage means for storing the destination set by the destination setting means;
A return point storage means for storing a specific point that returns after the vehicle travels as a return point;
Either when the ignition is turned on at a place other than home and the destination is not set, guidance to the destination is completed, or the navigation device is operating with the current location only displayed A determination means for determining whether or not the case is true,
If it is determined by this determination means that any of the above cases, the destination automatic setting for automatically setting the return point stored in the return point storage means as the destination and storing it in the destination storage means Means,
Route search means for searching for a travel route to the destination stored in the destination storage means;
Current position detecting means for detecting the current position of the vehicle;
Route guidance means for guiding the travel route searched by the route search means according to the current position of the vehicle detected by the current position detection means;
A navigation device comprising: With point registration means for pre-registering a destination or a point set as a relay point,
The return point storage means stores the return point separately from the points registered by the point registration means,
The destination automatic setting means, when no return point is registered in the return point storage means, automatically selects the home registered by the point registration means as the return point, and sets the return point as the destination. The navigation device according to claim 1, wherein the navigation device is stored in the destination storage means .

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