JPH04123087A - Guidance display device for automobile - Google Patents

Abstract

PURPOSE:To display the explanation of the contents of a desired facility without increasing the capacity of a CD-ROM by providing a memory stored with facility data in a position-displayed section and an explanation display means which displays the facility explanation of an accessed facility on a screen. CONSTITUTION:A microcomputer 20 reads map information out of the CD-ROM 15 and displays it on the scanning screen 57 of a display unit 50. When the contents of the desired facility are required during a travel in an area corresponding to the map information being displayed, the section of the desired facility is specified by screen operation and a request for service is made, so that all facilities in the specified section on the map screen being displayed are displayed at their presence positions with numbers given to the facilities. Further, the facilities which are displayed with the numbers are listed on the screen and the desired facility is specified on the screen to display the contents explanation of the facility. Consequently, the position and name of the desired facility are known without using any storage capacity on the CD-ROM 15 and the detailed explanation is obtained.

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a guidance display device for automobiles, and more particularly, the present invention relates to a guidance display device for automobiles, and more particularly, for automobiles in which detailed information about a desired facility in map information can be known from a screen on which map information is displayed. The present invention relates to a guidance display device. (Prior art) Japanese Patent Application Laid-Open No. 62-151881 (hereinafter referred to as Document I)
``As map information, prepare line segment data that shows at least 2 roads and symbol data that show 1 symbols of facilities such as hotels, parking lots, gas stations, car dealerships, etc., and display l number of symbols on the display device. is displayed so that any facility can be selected from among a plurality of facilities, and when any symbol Jl is selected, the symbol is displayed at the location where the facility exists along with the road. An information display device having the following characteristics is disclosed. However, according to the device described in the above publication, it is possible to extract and display only facilities of the same type on a map screen, or to display detailed information about each facility, such as a detailed map with a small scale of the area near the facility, or a detailed map of the area near the facility. However, there is a drawback that it is not possible to obtain explanations of the number of guests, fees, etc., or a route display with the facility as the destination. In order to provide such service information, the disadvantage of writing map information in advance on a recording medium is that the storage capacity of the recording medium becomes enormous, and it must be updated every time a new facility is constructed. Since the storage means used as a recording medium for map information is an expensive one such as a CD-ROM, it is a heavy burden on the user to always have the latest ROM. System providers will also be forced to supply the latest ROMs. (Problems to be Solved by the Invention) The conventional guidance display device for automobiles described in Document 1 does not display the location of a specific type of facility on a map screen, nor does it display explanatory text such as the contents of the facility. Can not. To display such a display, the storage capacity of the CD-ROM must be increased, which increases the cost. In addition, detailed information is available on CD-ROM.
In this system, each time the number of facilities increases, CD-
The contents of the ROM must be updated, which increases the burden on users and system providers. Therefore, the present invention provides a service display that specifies facility classification, without increasing the capacity of the CD-ROM. An object of the present invention is to provide a guidance display device for automobiles that is capable of displaying content descriptions of desired facilities. A recording medium on which the map information is written, wherein the facility data includes at least classification data indicating the classification of the facility, explanatory data explaining the contents, position data indicating the position, and number data assigned to each facility. , a drive means for driving this recording medium to control readout; a display means for display-processing the signal read out from this drive means and displaying it on a scanning screen as the content of the first screen; The key input means for requesting the display of the location of the facility on the screen of !1 compares the facility data from the drive means with the input data from the key input means, and displays the facility data within the category for which the key input was requested. a data sorting means to extract; a facility display means for displaying the position of the number indicated by the number data of the facility data within the category output from the data sorting means; and a list of the facilities within the category whose positions are displayed on the first screen. a list display means for displaying the number data and name data on a second screen; and a list display means for storing in-class facility data output from the data sorting means, and the stored data can be accessed on the second screen. The device includes a memory, and an explanation display means for displaying a facility explanation of the facility corresponding to the accessed data in the memory on a third screen. (Function) According to such a configuration, the map being displayed For example, when you are driving through an information area and want to know the details of a desired facility, first,
Specify the desired facility category and request the service by operating the screen. Next, all the facilities in the designated category that exist on the map screen (first screen) that is being displayed are displayed at their locations with numbers assigned to the facilities. Furthermore, the user can display the numbered facilities on a list screen (second screen), and by specifying a desired facility on the screen, a descriptive text of the facility displayed in the list can be displayed. (Examples) Hereinafter, the present invention will be explained in detail using specific examples. FIG. 1 is a block diagram showing an embodiment of an automobile guidance display device according to the present invention. Also, t! FIG. J2 is a format diagram of map information according to the present invention, and FIG. 3 is a screen diagram illustrating a map information display screen. In FIG. 1, map information for each unit section is written in the CD-ROM 15 in a digital signal format. The map information consists of at least line data that indicates roads, surface data that displays lakes and the like in color, and graphic data (facility data) that indicates various facilities using symbols. Facility data is the second
As shown in the figure, there are n facilities, and each piece of data includes a map number indicating the map number and a facility classification indicating the type of facility. Device data consisting of a facility name representing the name of the facility, a facility description explaining the contents of the facility, a facility number assigned to each facility, and location data is scanned on the scanning screen 57 with pixel precision as shown in FIG. It is composed of address coordinate values that specify horizontal (X) coordinates and vertical (Y) coordinates. Microcomputer (hereinafter referred to as main CPU) 20
is CD- through the I,'0 interface circuit 23.
The ROM driver 30 is controlled and the CD-ROM 15 is
You can read map information recorded in . The main CPU 20 causes the map information read from the CD-ROM 15 to be displayed on the scanning screen 57 of the display unit 50 via the graphics display processing circuit 24, and also performs current position calculation, processing for displaying the current position using a cursor, and the present invention. The service processing provided by The graphics display processing circuit 24 includes a character ROM and can display each facility as a symbol on the map information on the screen. The display unit 50 scans the signals (in R, G, B format) output from the graphics display processing circuit 24 under the control of the main CPU 20 and displays them on a screen 57.
is displayed. The display unit 50 has a sub CPU 52 whose host is the main CPU 20. The sub CPU 52 interfaces with the main CPU 20 and external input means as described below. That is,
A thin transparent touch switch 56 is attached to the scanning screen 57 of the display unit 50 on which the above map information is displayed. The touch switch 56 has a panel shape in which transparent electrodes are arranged in a matrix, and the geometric position of each switch is matched to the character position of the service image displayed on the scanning screen 57. The touch switch 56 is driven by the touch switch controller 55,
Signals generated by operating the touch switch 56 are processed by the touch switch controller 55 under the control of the sub CPU 52 . In addition, the sub CPU 52
A voice synthesis circuit 53 is connected to the input switch 51, and an input switch 51 is also connected to the input switch 51. The input switch 51 is an external input key for manually moving the map information displayed on the screen. The voice synthesis circuit 53 responds to user operations of the touch switch 56 and input switch 51.
The response is made by voice via the speaker 54. Furthermore, the main CPU 20 is connected to a rotational pulse generator 12 that detects the rotational speed of the left front wheel and generates a pulse signal proportional to it, and a rotational pulse generator 11 that detects the rotational speed of the right front wheel and generates a pulse signal proportional to it. These pulse signals are counted through a left front wheel counter (L counter) 22 and a right front wheel counter (R counter) 21, respectively. The rotational pulse generators 11 and 12 are provided in the wheel hubs of the left and right front wheels, respectively, and output, for example, 48 pulses for each rotation of the wheel. The interval between these pulses corresponds to the distance traveled by the wheel by 4 cm. Furthermore, absolute position information of the mobile object is obtained by a GPS (Global Positioning System) receiver 41. A GPS receiver 41 induces a signal from a satellite to a GPS antenna 42, and determines the current position and driving direction based on information obtained by processing this signal. Calculates position error, traveling speed, altitude, satellite information, etc. The results of these calculations indicate that the R5-2320 cable 4
2 to the main CPU 20. In addition, CD-
ROM driver 30 and I/O interface circuit 2
3 through an optical cable 32. The operation of the automobile guidance display device having the above structure will be explained with reference to FIGS. 4 to 22. Figure 4 is a flowchart showing the flow of the main routine of this device, Figures 5 to 7.
The figure is a more detailed flowchart of Figure 4, and Figures 8 to 1.
FIG. 5 is a detailed flowchart of this service processing (subroutine) performed by the mode selection routine 300 and the screen display routine, and FIGS. 16 to 22 are screen diagrams showing screen contents during the service processing. Now, when the key switch is turned on at the start of operation, the main CPU 20 receives power from the battery and becomes operational, and starts processing from the fourth @ startup I00. The initial setting routine 200 sets various flags and counters necessary for car guidance processing to initial values. After the initial settings, the main CPU 20 executes a mode selection routine 300,
Current position calculation routine 400 and screen display routine 50
Repeat in order of 0. The mode selection routine 300 is a process for setting the operation of the subsequent screen display routine, and the current position calculation routine 400 is a process for calculating the current position on the screen from the absolute value information from the GPS receiver 41. The display routine 500 is a process for performing screen display (vehicle guidance display) in the mode set in the mode selection routine 300. Note that the following description uses flags called MD, SD, SF, and SE. Each flag has the meaning as shown in the table below. ◎MD (mode flag) Flag indicating map information screen display mode, MD=1: Mode to automatically scroll the screen as you drive (standard) MD=2: Mode to manually scroll the screen MD=3
:Service screen display mode◎SF (service flag) Flag indicating whether or not this service processing mode is active, 5F=0:
Service not selected 5F = 1: Service selected ◎ SD (Service Display) Flag indicating the content of service processing mode, 5D = 1: Service selection screen display 5D = 2: Recreation area location number display 5D = 3: Station location number Display 5D=4: Recreation area list display 5D=5: Station list display 5D=6: Facility description display ◎SE (service entry flag) SE=0: Screen rewriting 5E=1: Screen not rewriting , this embodiment uses a data memory SC that stores the facility name and location data of facility data numbered on map information, and the data stored in this data memory SC can be stored without accessing the CD-ROM 15. ,
The screen can be accessed via a touch switch 56. Now, as shown in FIG. 4, the mode selection routine 300 starts with the input switch 51. The touch switch 56 and the current location coordinates are inputted, and then the determination processing of steps 301 to 30B and 31B is performed. In steps 302 to 305, it is determined whether or not the input switch 51 has been operated to scroll the first screen (hereinafter referred to as the map screen) forming the contents of the scanning screen 57. If any of steps 302 to 305 becomes "YES", the map screen moves up and down or left and right accordingly. Steps 307 to 310 are executed in accordance with these steps. In steps 307 to 310, the coordinate values Xm and Ym (see FIG. 3) of the center position of the screen 57 are set to Ym+dY, respectively.
(see step 307), Ym-dY (step 308
), Xm+dX (see step 309), Xm-
Increment and decrement dX (see step 310). When there is such a change in the screen median value, the MD flag is set to "2" in steps 311-314. By comparing the screen center coordinate value with the current location coordinate value of a car (hereinafter referred to as a moving object), it is possible to determine whether or not the current location of the moving object exists within the map screen area. This will be used later in the screen display routine 500. Further, in step 306, it is determined whether the mobile object has moved, for example, based on the current location coordinates input in step 301 and the current location coordinates input in the previous step. If it is determined in step 306 that the mobile object has moved, the MD flag is set to "1" (step 315). By the way, all the decisions in steps 302 to 306 are "No".
”, the determination process of step 316 is performed. That is, step 316 determines whether or not to perform the service processing according to the present invention. The user specifies this service processing mode. This mode can be set, for example, by touching a predetermined switch of the touch switch 56. If the service is selected in step 316, the process proceeds to step 317, and the subroutine 600 detailed in FIGS. 8 to 1f is executed. In subroutine 600, when this subroutine is entered for the first time,
Actual service begins in the next cycle by simply setting MD=3 and setting the SD and SF flags (step 602), which will be described later (see FIG. 8). FIG. 6 shows the current location calculation routine. Since this routine is not directly related to the present invention, it is shown as a schematic flowchart. Briefly, a GPS input camera step 401 inputs the signal from the GPS receiver 41. Further, in the wheel signal input step 402, the L-R counter 2
2. Enter the value of 21. In the GPS and wheel statistics calculation step 404, based on the GPS and L-R counter 22.21 values input in steps 401 and 402 described above, the two data are compared to determine the values of the current location coordinates xp and yp. In the area search step 404, the above-mentioned step 4
The current coordinates obtained in step 03 are corrected to the position on the road data, and in map matching step 405, L-
Accurate local coordinates are obtained by correcting the error due to the accumulation of the values of the R counter 22°21. FIG. 7 shows the screen display routine. In this screen display routine, the MD flag set in the mode selection routine is determined in steps 501, 502 and 508, and the current location is displayed. When MD=1, it is standard display. In the standard display, it is determined whether the current location coordinates Xp and Yp calculated in the current location calculation routine 400 in the previous step exceed the screen frame, and if they have exceeded the screen frame ("YES"'), step 504 is performed.
After setting Xp and yp to the values of Xm and Ym, the current location display processing of steps 505, 506 and 507 is performed. Further, when MD=2, steps 503 and 504 are omitted and steps 505, 506 and 5 and 7 are performed. MD=3
In this case, service processing (subroutine 700) is performed in step 509. By the way, when the user makes a request for this service at the time of determination in step 316, subroutine 600 and subroutine 700 are performed in a time-sharing manner within the main routine, and the desired facility number and facility description are displayed. . Figures 8, 9, 10, and 11 show step 3.
17 (subroutine 600) is shown in detail in FIG.
13, 14 and 15 show step 509 (subroutine 700) in detail. In this embodiment, as described above, the service processing is performed in a divided manner into a mode selection routine and a screen display routine. To explain this sequentially, after the service request in the service selection routine 300, step ■ Pre-setting of necessary flags - subroutine 60.
0 step 601→602 (FIG. 8). Step ■ Service selection screen display ----- Step 701 of subroutine 700 → Step 701-1゜70
4-Step 706 (FIG. 12). Step ■Waiting for desired facility category selection - Subroutine 60
0 step 601 → step 603 → step 606
~611 (Figure 8). Step ■ Overwrite the desired facility classification number on the map screen -
Step 701 of subroutine 700 → Step 702
→ Step 702-1 → 707 to 717 or 703 → 7
03-1→718-728 (Figures 12 and 13). Step ■ Designated facility squirrel 8 Waiting for request for confirmation - Slap 60
1 groan 603 → 604 → 612~615 is step 60
1-603-604-605-616-619 (Figure 9). Step ■ Display list of designated facilities - Step 7゜1 → 70
2→703→729→730-g-731-740 or step 729→step S2 (FIGS. 14 and 15). Step ■List Waiting for facility description request, Steps 601 → 603 → 604 → 605 → 620 → 62] ~ 6
27 or step 601→603→604 605→6
20→628→629-635 (Figure 10). Step ■Display explanation of facility requesting explanation - Step 70
1-702-703-729-730→741→742
Moaning 743-750 (Figure 15) Stenib ↓ In the first step 601 → 602, it is determined by the SF flag whether or not this subroutine has been entered for the first time.
Set the SD flag, SF flag, and MD flag. The SF flag is set to -0 in the initial setting routine. Therefore, when entering this subroutine for the first time, step 60
1 is always "YES", step 602 [flag set] is performed, and then the current location calculation routine 40 is executed.
Go to 0. At this time, the map screen shows 161m.
A "SERVICE" character 61 is displayed in the lower right corner. This display lets the user know that the service mode has been entered. STENIB ■ The SD flag set to '1' by step 602 is determined in step 701. In step 701, proceed to step 701-1, and 5E=0

〔Effect of the invention〕

As described above, according to the present invention, it is possible to know the location and name of a desired facility, and to display a more detailed explanatory text, without using the storage area of a CD-ROM.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of an automobile guidance display device according to the present invention, FIG. 2 is a format diagram of map information according to the present invention, and FIG. 3 is a screen diagram illustrating a map information display screen. Figure 4 is a flowchart showing the flow of the main routine of this device, Figures 5 to 7 are more detailed flowcharts of Figure 4, and Figures 8 to 15 are the main routines performed in the mode selection routine and screen display routine. Detailed flowchart of service processing, Figures 16 to 20 are screen diagrams showing the screen contents during service processing, Figure 21 is a memo of the data memory necessary for displaying facility explanations, and Figure 22 is It is a screen diagram which shows an example of an explanatory text screen. 11.12 Rotary pulse generator, 15-CD-RO
M, 21.22 Counter, 23-I/O interface circuit, 24-Graphics processing circuit, 3
0-CD-ROM)'main<-41-GPS receiver,
42-GPS antenna, 5 (1-display unit, 51-Okasui Sochi, 52 touch switch
Controller 56-・Yu・Sochi switch, 5'l-
screen. 316, 508--Service determination processing, 317°5OL--Service processing. Patent Applicant Aisin Seiki Co., Ltd. Agent Patent Attorney Hiroshi Okawa [Figure 5 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 15 Figure 19 Bear Figure 20

Claims (1)

[Scope of Claims] The facility data of the map information including line data representing roads and facility data representing facilities includes at least classification data showing the classification of the facility, explanatory data explaining the content, position data showing the position, and A recording medium in which the map information consisting of number data assigned to each facility is written; a drive means for driving this recording medium and controlling reading; display means for displaying the content of the screen on the scanning screen; key input means for specifying a facility classification and requesting display of the location of the facility on the first screen; and facility data from the drive means and the key input. A data sorting means that compares the input data from the means and extracts the facility data within the category for which a key input request has been made, and displays the position of the number indicated by the number data of the facility data within the category that is output from this data sorting means. facility display means; list display means for creating a list of the facilities within the classification whose positions are displayed on the first screen and displaying the list on a second screen using the number and name data indicated by the number data; and output from the data sorting means. a memory that stores facility data within a category, and stores the stored data in a memory that can be accessed by the second screen, and displays a facility description of the facility corresponding to the accessed data in the memory on a third screen. A guidance display device for an automobile, comprising: a display means;