JPS60165511A - Navigation system with road map switching function - Google Patents

Abstract

PURPOSE:To improve the visibility of a display screen by retrieving and displaying a specific map which indicates the current position of a vehicle calculated by the 1st means, retrieving and displaying other relative specific maps, and switching those maps. CONSTITUTION:A vehicle speed and direction sensor 2 and an operation switch 3 are connected to an MPU (microprocessor) 1 with a RAM7 and ROM8 through an input/output LSI4, and a cassette 5 stored with a road map in a specific area is also connected through a CRTC6 for small-sized magnetic tape device control. Further, a CRT9 for transmitting various data to a CRT15 is connected to the MPU1. Furthermore, connections of memories 11 and 12 for storing the contents of the CRT15 with the MPU1, CRT9, etc., are switched by a microprocessor 10, one of a standard, an enlarged, and a detailed map and other two maps are displayed on the CRT15, and an indication is sent to the MPU1 with a character, i.e. transparent touch panel switch 16 to switch and display the maps.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a driving information device for an automobile or the like, and to a navigation system.

[Background of the invention]

In a navigator that displays a road map and a travel trajectory of the vehicle while the vehicle is running, there is a travel guide device disclosed in Japanese Patent Laid-Open No. 57-206819 as a navigator that has a function of switching the road map. This is for switching between adjacent maps, but it does not take into consideration switching the scale of the road map of the displayed area in multiple stages. Deterioration in visibility is unavoidable in metropolitan areas with dense road networks.

[Purpose of the invention]

The purpose of the present invention is to provide a road map that displays the current location of a vehicle.
It is possible to switch to the desired road map according to the operator's request.
To provide a navigation system with a road map switching function that makes it possible to improve the visibility of a display screen.

[Summary of the invention]

The present invention calculates the entire current location of the vehicle in response to the output of the sensor that detects the vehicle's direction and the output of the sensor that detects the vehicle's speed, searches for and displays a road map that displays the current location of the vehicle. In response to the displayed road map, the system searches for the presence or absence of other road maps displaying predetermined information related to this road map, displays the results, and responds to the operator's request. All features include searching, switching to other road maps displayed.

[Embodiments of the invention]

FIG. 1 μ is an overall configuration diagram showing a one-field embodiment of the present invention.

1 is a microprocessor (MPU) that controls the operation of the entire navigator system.

2 is a vehicle speed pulse sensor that detects the vehicle speed and direction jff', and a geomagnetic direction se/? It is. Reference numeral 3 denotes an operation switch composed of a plurality of switches, which transmits instructions such as initial settings of the navigator to the MPU 1. 4 is
M of signal sound 1 obtained from sensor 2 and operation switch 3
This is an input/output control LSI for inputting to the PU. 5 is a cassette tape which is an external storage device for storing road maps (standard and enlarged maps) of a specific area;
The CMTC of the small magnetic tape device control LSI No. 6 is connected to the Yoshie MPU. This is a volatile memory (RAM) used for temporarily storing data while the MPU 7u, 1 performs all arithmetic and control operations.

Reference numeral 8 denotes a non-volatile memory (ROM) in which programs for control operations and arithmetic processing operations for each power of the 10 MPU are stored. 9 is the L8I (CRTC) which is the core of the circuit that transmits various display data such as road maps to the color CRT 15.
). 10, memories 11 to 12 storing contents to be displayed on the color CRT 15, MPUI and CRTC;
It is a multi-branch that has the function of switching connections with 9 etc. 11;1. , the specific road data cassette 5 used for displaying the color C-type T15 is selected via the CMT 06k under the control of the MPUI, and the travel trajectory is also stored in the graphic memory. 12 is
It is a memory dedicated to character data for displaying character information on the color card T15.

13 is a character generator that converts and stores character information such as alphanumeric characters, symbols, katakana, and kanji. 14 is a video controller that performs all level conversion and waveform shaping processing that meets the required specifications of Color C-T15.
2, a color CRT 15 is connected to this, and data is transmitted. 16 is a transparent touch panel switch grounded on the color C-T15 cathode ray tube.
Character memory 2 and character generator 13
This is a switch that allows the operator to instruct the MPU 1 by directly touching with his or her finger each of the party selection menus created by the program and projected on the color CRT.

In the above configuration, the operation of one embodiment according to the present invention will be explained next. FIG. 2 shows a specific example of the operation switch 3 used for initial setting of this navigation system.

First of all, the mold switch of 103? By pressing the button, the initial value of the map number "0" is displayed on the color CRTi 5 using the character generator 13.

At this point, the operator searches the prepared atlas for the new map number that indicates the current location.

Next, CD, numbers displayed on T, keys 104-1
Change using 07 gold. Keys 104 and 1105 are keys for increasing numerical values, and keys 106 and 107 are keys for decreasing numerical values. Using these four key sounds, the searched map number is matched with the map number sound displayed on the CRT. After making a match, by pressing the setting key 101, the MPU 1 searches the cassette 5 for the corresponding map 'kcMT C6t-, switches to the multi-printer 10 all graphics memory 11, loads the map data all memory 11, and loads the map data in all the memories 11. Display to. Next, in order to set the current position on the displayed map, a cross-shaped cursor is displayed overlappingly in the display direction. The situation is shown in Figure 3. 201 is
This shows the map loaded from the cassette 5 by the above-described operation.

202 and 204 are from the character generator 13)
This is the crosshair cursor that is displayed. The intersection point 204 of this cross cursor is moved to the current location to set the current location. To move the cursor, the llt line 202 is
5 and 107, 105 to the left, 107 to the right. Horizontal [203] Switches 104 and 106 move upwards at 104 and downwards at 106. Use these operation switches to move the intersection 204 to the current position, and press the setting key 1.
Setting 'Ik is transmitted to MPU1 with 01. Cancel key 102 is used to cancel the setting of the map number and the establishment of the current location.
h, a switch that informs the MPUI.

FIG. 4 shows an example of a screen displayed in one embodiment of the present invention.

This is an example of a map that is normally displayed, and a map of this scale will be referred to as a standard map. In addition, the character string displayed in the lower left of 21 indicates that a corresponding enlarged map has been prepared for the current vehicle position within this standard map. By pressing the touch panel switch 16, the display screen is switched to the enlarged maps 22 and 23. 22 is the result of pressing the enlargement switch in 21. This screen is called an enlarged map, and a further enlarged diagram 23kl#
It is called an I-thin map. The lower left of FIG. 22 clearly indicates that there are standard and detailed maps that can be switched from this enlarged map. Fig. 23ri is a detailed view that changes when the details of Fig. 21 or the butterfly Fig. 22 and the part clearly indicated by the frame are pressed. Contrary to this, if the standard map in FIG. 23 or 22 is pressed, the map will switch to the standard map in FIG. 21, and if the enlarged map in FIG. 23 is pressed all the way, the map will be switched to the enlarged map in FIG. 22. Figure 24
．． 25 describes all display examples when there is only one type of standard and enlarged map.

FIG. 5 shows the configuration of the vehicle's current position detection and transparent touch panel switch. 311- is a unit that generates a complete pulse train according to the vehicle speed.

32 is an azimuth sensor that detects the earth's magnetism, outputs the absolute traveling direction of the vehicle VX e Vy f:, and sends the data to the microphone controller (MPUI) via A/D conversion 33.

The MPUI can use these pulse trains and absolute orientation data to calculate the current position of the vehicle.

This result is then written to the travel locus memory of the graphic memory 11 and displayed on the IERT. 16
A light-emitting element and a light-receiving element are installed facing each other at the X and Y coordinates, and the finger can tell when the light is blocked by the
, Y is a transparent touch panel switch that detects the coordinates of the light receiving elements on the screen. This detection result is the I/F (
interface) 34 to the MPUI, and the
U1 uses the coordinate data to determine the type of switch that has been pressed.

Next, see Figure 6 for all control operation examples to realize the display example in Figure 4.
This will be explained using FIG.

First, FIG. 6 shows a flowchart of a control operation for displaying a frame at the lower left of the 1iIij screen being displayed. By performing the initial settings described in the explanation of FIGS. 2 and 3, the 4o1 operation starts. In step 402, the pulse train and absolute direction obtained by the sensors 31 and 32 are read, and in step 403, the vehicle's movement position is calculated based on the current position next to the registration. At this time, the previous vehicle position is also stored in the RAM 7 and the graphic memory 11 and displayed on the travel trajectory kcRT15. Next time you load the map, the information added to the map data (
Map number, type of map scale, type of map of different scale, and coordinate position of the map within the local map) are stored in all RAM 7, and based on this data, the screen currently displayed in 404 is a standard map. If it is not a sled, check whether it is an enlarged map at 409 or a detailed map at 410. Here, if an enlarged map is prepared, in step 408, the character generator 13 informs the character memory 1 as shown in FIG.
Display using 2. If both the enlarged and detailed maps are prepared, in step 407, the character generator 13 uses the character memory 12 to display them as shown in FIG.

Next, in step 415, all current positions of the vehicle's moving positions determined in step 403 are loaded into the driving trajectory memory of the graphic memory 11, and the entire driving path and current position are displayed.
Return to control of 02. Next, when it is determined in step 409 that the enlarged map is being displayed, the enlarged map is displayed in step 412 using the new vehicle position coordinate values calculated in step 403 and the enlarged map coordinate values stored in the RAM 7 at the time of map loading. If it is within the enlarged map, the moved position is stored in the graphic memory 11 in step 415, and the process returns to step 402. If the map is not within the enlarged map, the display is temporarily switched to the standard map in step 413. Is this switching RAM? MPUI uses the standard map number stored in the CMTC6t-cassette 5
, and is loaded into the graphics memory 11 via the multiplexer 10. Then, in step 414, the enlarged display of the lower left corner is erased, and the process returns to step 402 through the process of step 415. Finally, when determining that the map being displayed on 4o9 is a detailed map '& using the data in RAM7, 403
Using the new vehicle position coordinate values calculated in step 41 and the detailed map coordinate values stored in RAM 7, it is checked in step 41o whether or not it is within the detailed map. Return to If it is outside the detailed map, first 4.
At step 11, all character generators 13 are used to erase the detailed display, and the processing procedure is the same as described above. Same, 40
When calculating the vehicle position in step 3, the coordinate position being displayed and the corresponding position are enlarged. If a detailed map exists, the coordinate position within the detailed map is also enlarged and calculated using LAM data. I'll keep it.

FIG. 7 shows an example of control when the frame shown at the lower left of the display screen example of the m5 diagram is pressed. First, touch panel switch 1
6 has been pressed (touched), the MPUI periodically checks using a timer interrupt sound and recognizes in all 501 that it has been pressed. Then, in step 502, the type of key pressed is fully determined.

When it is determined that the standard has been pressed here, the corresponding map number is checked in t-RAM7 in 503, and 0MT is determined by that number.
Using the cassette 5, a standard map is downloaded to the graphic memory 11 via the multiplexer 10, and the video controller 14 displays it on the cassette T15. Then, when loading the display map, information added to the map (jtii map number, type of map scale, type of map of a different scale, and coordinate position of the map within the local map) is stored in tRAM7. Based on this, it is checked whether enlarged and detailed maps are prepared, and the types of prepared maps are displayed at the lower left of the screen using the character memory 12 and character generator 13. Then, in step 511, the process moves to the control process shown in FIG. Next, when it is determined in 502 that the enlarge button has been pressed, the map is loaded from the cassette 5 in the same procedure as in 503 in 505, and the display is switched to an enlarged map. When switching the display, the type of map before switching (standard, enlarged, detailed) is stored in number sound RAM 7, and the type of map before switching is checked in 506. If it is standard, 507 The type of map prepared is displayed in the lower left frame of the AM7 full search screen.If the map is detailed, it is displayed in step 508 by the same process as described above, and in step 511, the process moves to the control process shown in FIG. Finally, when the key-in is determined to be detailed at 502, the display screen is switched to the detailed map 111'fr using the same procedure as at 503, and the standard and enlarged maps are checked at 51O. The display is performed using the generator 13, and in step 511, the process moves to the control process shown in FIG.

In addition, the vehicle position on the map shown in 403 in FIG. 6, and if an enlarged or detailed (or standard) map is prepared for that point, the standard, enlarged, and detailed map stored in the RAM 7. By calculating the entire vehicle position in each map based on the coordinate position on the display screen and storing it in RAM 7, it is possible to have a driving trajectory for each map.
When the displayed map is switched and displayed, the travel trajectory is displayed within the switched and displayed map. Furthermore, among the maps prepared in the display map with different scale rates, maps located at points where no vehicle currently exists can also be viewed using the cursor keys 104 to 107 in FIG.
, move the cursor to the desired position using
It is possible to display the lower left of the i side and switch to that map.Since all the map numbers and coordinate positions prepared in the display screen are stored in the RAM 7, all the map data can be loaded from the cassette 5 using the O data. This can be achieved by the means described above.

〔Effect of the invention〕

According to the present invention, a road map that displays the entire current location of a vehicle,
It is possible to switch to the desired road map according to the operator's request.
A navigation system with a highly visible display screen can be obtained.

[Brief explanation of the drawing]

FIG. 1 shows an overall configuration diagram of an embodiment of the present invention. FIG. 2 shows a specific example of an operation switch used in an embodiment of the present invention. FIG. 3 shows a specific example of a cursor used in an embodiment of the present invention. FIG. 4 shows an example of displaying the color 〇l (T) which shows the principle of the present invention. FIG. The procedure for displaying the switchable map information shown in Figure 2 on a color CRT is shown. Figure 7 shows the procedure for switching the displayed map to the map indicated by p1 by pressing the frame at the bottom of the screen. Explanation of symbols 1...Microprocessor, 2...Sensor, 3...
・Operation switch, 5... cassette, 7... 几AM,
8...几0M11...1ρ fix memory, 15...
・CRT, 16...Panel switch, 31...Vehicle speed setting/su, 32...Direction lI\J 2nd I\J 'fJJ Zuku Otsushi 7th Ward

Claims (1)

[Claims] 16 A sensor for detecting the direction of the vehicle, a sensor for detecting the entire speed of the vehicle, a first ± stage for calculating the current location of the vehicle in response to the outputs of these sensors, and a sensor for detecting the current location of the vehicle in response to the output of the first means. a second means for searching and displaying a specific road map for displaying the current position; in response to the specific display map displayed by the second means, predetermined information related to the specific display map is displayed; A third means for searching for the presence or absence of other specific maps and displaying the results; predetermined information related to the specific map displayed by the third means is displayed in response to a request from an operator; A navigation system with a road map switching function, which is fully equipped with a fourth means for switching to another specific map.