JPH0153472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an in-vehicle course guidance device, in particular, equipped with a direction sensor and a speed sensor, and plots a running trajectory on a display in response to outputs from the direction sensor and speed sensor. At the same time,
In the vehicle-mounted course guidance device that displays a map pattern superimposed on the driving trajectory displayed on the display screen, a map projection means is provided, and the user can navigate from the starting point to the destination according to the own driving schedule via the keyboard. The map is configured to sequentially program the previous maps, and also has a projection pattern rotation means for rotating the map pattern projected by the map projection means so that it can be turned upside down, so that the displayed travel trajectory can be virtually displayed on the display or screen. The present invention relates to a vehicle-mounted course guidance device that displays a course that extends upwardly or forwardly.

Prior to filing the present application, the applicants of the present application developed an on-vehicle course guidance device as shown in FIG. The in-vehicle course guiding device is placed, for example, in front of the driver's seat, and as shown in FIG. A map sheet 3 drawn on a transparent film, for example, is configured to be attachable to and detachable from the front of the display screen; The attached map sheet 3 is fixed by the map fixing means 1a so that the traveling trajectory 2 is extended along a desired road on the map.

The above-mentioned in-vehicle course guidance device has one major feature and advantage in that it overlaps the display screen and the map and extends the driving trajectory along the road on the map. This can be expected as one direction for an on-vehicle course guidance device. However, in the case of the apparatus shown in FIG. 1, the map mounted to correspond to the display screen is present in the form of a map sheet, and is configured to be manually mounted and manually removed. For this reason, if, for example, while driving with one map sheet 3 attached, the driving trajectory advances to the edge of the map and it becomes necessary to replace it with a new map, it is necessary to manually replace it. be. Therefore, in order to improve this point, a map pattern is projected by a map projection means on the above-mentioned travel trajectory or a projection of the travel trajectory on a screen (in this application, both are collectively referred to as "travel trajectory"). Therefore, it was considered that the map projection means could be modified to allow map patterns to be exchanged through simple operations. However, even in the case shown in FIG. 1 and when projecting the map pattern, for example, if the top or front of the display or screen is positioned northward with reference to the map, if the car is traveling southward, the above Since the driving trajectory extends below or in front of the display or screen, there is a problem in that the driver can easily judge whether the steering wheel is being operated in the opposite direction.

The present invention aims to solve this problem, and aims to solve the above-mentioned problem by configuring the map projection means to be able to vertically invert the projected map pattern. This will be explained below with reference to the drawings.

Figure 2 is a flowchart explaining how to program a planned driving course using an on-vehicle course guidance device, and Figures 3 to 5 are the national map (block diagram) shown in Figure 2 and an index map by region. FIG. 6 is an explanatory diagram showing an example of a map and a necessary map; FIG. 6 is an embodiment of the configuration of a map film used for map projection corresponding to one map; FIG. 7 is an embodiment of the configuration of the above-mentioned map film; FIG. 9 is a block diagram of an embodiment of the present invention, FIG. 9 is an embodiment of program information recorded in a magnetic recording section provided on a map film, and FIG. Embodiment Structure FIG. 11 shows an embodiment structure of the projection pattern rotation means used in the present invention.

Hereinafter, the on-vehicle course guidance device is configured to project a map pattern, and the projected course is programmed in advance using the projection means so that the map pattern can be exchanged with a simple operation. The present invention will be described assuming that the map pattern can be flipped upside down.

By adopting a configuration that projects a map pattern in the vehicle-mounted course guidance device, it is possible to program the course one is planning to travel in advance, and when the corresponding map pattern is projected, the system It becomes possible to record report information to be notified to the driver via the keyboard. Figure 2 shows the manner in which the above-mentioned recording or programming is carried out. When the driving course is determined, (1) the map display section is activated and a national map (block diagram) is first displayed on the display screen or Project via a map projection mechanism.

(2) As a result, a nationwide map (block map) as shown in Figure 3 is projected. For example, if you are planning to drive in the Tohoku region, the map number is "1".
Enter the key.

(3) This activates the map display section and projects a regional index map corresponding to the Tohoku region as shown in FIG.

(4) For example, if you plan to drive in an area corresponding to map number "30", use map number "30".
Enter the key. The map number "30" has the fifth
Maps as shown in the figure are associated with each other.

(5) The map number "30" is recorded, for example, in a magnetic recording section, which will be described later with reference to FIG.

(6) When the map corresponding to the map number "30" is projected later during actual driving, if it is necessary to notify the driver in response to the map, the key
Via the function keys on the board, notification information such as parking area rest, gasoline refueling, meal instructions, etc. can be recorded.

(7) Below, as long as it is within the range of the regional index map of the Tohoku region, for example, map number ``29'' that needs to be projected after map number ``30'' is key-input, recorded, and displayed as necessary. Enter and record the function keys. It goes without saying that it is also possible to project a regional index map or a national map (block map) as required.

The maps shown in FIGS. 3, 4, and 5 are stored one frame at a time on a map film 4 as shown in FIG. 7, for example, in the form of a reel. At the top of the map film 4, as shown in FIG.
A magnetic recording section 5 is provided, in which each record described with reference to FIG. 2 is stored. Further, as shown in an enlarged form in FIG. 6, a magnetic tape recording section 7 is provided corresponding to each one-frame map 6, for example, corresponding to the map with number "30", and the magnetic tape recording section 7 Information indicating map number ``30'' is recorded at the top, and is used when accessing the map with number ``30.'' Furthermore, corresponding to the map numbered "30" above, the map number of the area extending northward of the map is number "29", and the map number of the region extending eastward of the map is number "22". to be,
It is written that the map number for the area extending southward is number 31, and that the map number for the area extending westward is number 36. It is convenient for entering the map number of the next map during programming as explained in connection.

FIG. 8 shows a block diagram of one embodiment of the present invention. Reference numeral 4 in the figure is a map film corresponding to that shown in FIG. 7, 8 is a microprocessor for displaying the travel trajectory 2 shown in FIG.
A display 11 stores instructions and data used by the processor 8 to execute processing, and a map display section 12 accesses the map film 4 and displays the necessary map on the screen of the display 11. It represents something that is projected.

Information inputted by keys during travel programming as described with reference to FIG. 2 is recorded on the magnetic recording section 5 shown in FIG. 7 as shown in FIG. 9.
In Figure 9, 13-1, 13-2, 13-
3,... each indicate a recording record, and bit part A in each record is the record start bit and is always set to logic "1", and bit part B indicates whether the record corresponds to the map number or function. This is used as a judgment bit to indicate whether the record is Also, the bit part C is
If the record corresponds to a map number, the scale factor of the map is given as "11", for example, and if the record corresponds to a function, the function code is "00" (parking area) or " Instructions are given in the form of ``01'' (refueling) or ``10'' (meal). Furthermore, if the record corresponds to a map number, the bit part D is given the map number, and if the record corresponds to a function, it is always given all zeros.

When key input is performed in response to travel programming as explained in connection with FIG.
The illustrated processor 8 sequentially writes programmed information onto the magnetic recording section 5 of the map film 4 via the map display section 12 as shown in FIG.

The map film 4 programmed in this way is set on the map display section 12 during actual driving. The contents of the magnetic recording section 5 are stored in the memory 9.
is read and stored above. As shown at the beginning of this specification in conjunction with FIG. Locus 2 is plotted on the display 11. It should be noted that since the main subject of the present invention is not the aspect of plotting the traveling trajectory 2, a description of the specific configuration for plotting the traveling trajectory 2 will be omitted. However, conceptually, for example, every predetermined rotation of the wheel (every predetermined unit traveling distance R), the direction angle θi with respect to the immediately preceding running direction is detected, and the current signal Xk, Yk Xk=X ₀ + 〓 ⁱ It may be considered that Rcosθi Yk=Y ₀ + 〓 ⁱ Rsinθi is determined, and a plot corresponding to each position (Xk, Yk) is left on the display 11.

While the driving trajectory 2 is being plotted on the display 11 during actual driving, each time the driver presses the search key on the keyboard 10, the processor 8 selects the search key that has been read into the memory 9. The information corresponding to each record 13 corresponding to the map number shown in FIG. 9 is read and the map number is instructed to the map display section 12. In response to this, the map display section 12
accesses the map with the corresponding number and projects it on the screen of the display 11. At this time, if there is a record corresponding to a function paired with the record corresponding to the map number, the processor 8 displays a symbol corresponding to the function in the corner of the screen of the display 11, and displays the symbol on the speaker as necessary. The system notifies the driver via voice.

FIG. 10 shows the structure of an embodiment of the front panel of the vehicle-mounted course guiding device of the present invention. In the figure, S is the display screen, 2 is the driving path, 14 is the projected map pattern, 15 is the numeric keypad, 16 is the film advance/rewind operation switch, 17 is the function key, and 17-1 is the parking area. 17-2 is a rest instruction key, 17-2 is a refueling instruction key, 17-3 is a meal instruction key, and 19 is an automatic/manual changeover switch. When the manual state is set, the illustrated switch 16 is used to run the map film and display the desired map. 20 is a speaker which notifies the above-mentioned report by voice; 21 is a search key which is only pressed when the switch 19 is in the automatic state. 8, the processor 8 shown in FIG. 8 determines the content of the map number correspondence record taken into the memory 9, and instructs to project the map with the corresponding number, 22 is a display screen. It represents a function instruction image output as a video.

During driving programming as explained with reference to FIG. 2, first determine the drive course, project the map shown in FIG. 4
After projecting the map shown in the figure, for example, map number "30" is selected, and the map numbers are then input using the numeric keypad 15 in order of drive and course. Then, a function is inputted using the function key 17 as necessary. The input information at this time is collected one record at a time as shown in FIG. 9 and stored in the magnetic recording section 5 shown in FIG. 7.

When starting actual driving, the contents of the magnetic recording section 5 are taken into the memory 9 as explained in connection with FIG. A map is projected onto the display screen. If a function is specified corresponding to the map, a function instruction image 2 is displayed on the display screen.
2 is displayed and audible notification is made by the speaker 20 as necessary.

By providing the function of projecting a map pattern as described above, it becomes possible to exchange the map pattern to be superimposed on the driving trajectory with a simple operation, and moreover, as described above, the planned driving course can be programmed in advance. It becomes possible to project map patterns one after another while holding the map. However, when projecting the map pattern onto the screen S, if it is determined that the north of the map is located above the screen S, for example, when the map pattern is projected on the screen S, the map pattern is projected onto the screen S. In this case, the travel trajectory 2 extends toward the bottom of the screen S in the drawing. For this reason, when the driver actually turns the steering wheel to the right, for example, along the road, the driving trajectory will extend to the left along the road on the map pattern, which may seem strange to the driver. It gives a feeling.

In the present invention, the tenth
Prepare the projection map rotation instruction unit ROT as shown in the figure,
A map pattern projected on a display screen S can be arbitrarily rotated. For the rotation, only the map pattern may be mechanically rotated, and for the display of the travel trajectory 2, the rotation may be applied by electronic means, or the map pattern and the travel trajectory 2 may be mechanically rotated together. It may also be made to rotate.

FIG. 11 shows an embodiment of the projection pattern rotation means for mechanically rotating the map pattern and the travel trajectory together. The symbol S in the figure is a display screen corresponding to FIG. 10,
Reference numeral 6 denotes a one-frame map corresponding to FIG. 7; 23 and 24 are respectively map film storage units in which the map film 4 stored in a reel format can be freely wound and rewound; 25 is a map film. The winding/rewinding drive motor 26 is, for example, a translucent liquid crystal display plate, and the above-mentioned traveling locus is the eighth
What is displayed by the illustrated processor 8,
Reference numeral 27 denotes a rotary table that rotates the above-mentioned map film storage sections 23 and 24 and the liquid crystal display plate 26 as one body, 28 a rotary drive gear that rotates the rotary table 27, and 29 a rotary table drive. a motor; 30 is a projection light source; 31 is a light beam collecting cover, which is a projection light source 3;
The above-mentioned liquid crystal display board 2 collects the light from 0.
6 to be irradiated from below, 32
represents the lens system.

As explained in connection with FIG. 8, the microprocessor 8 calculates the traveling position based on the outputs of the direction sensor and speed sensor mentioned above, and plots the traveling trajectory on the liquid crystal display board 26. . On the other hand, as explained in connection with FIGS. 8 and 10, based on the operation of the search key 21, the microprocessor 8 controls the motor 25 to display a predetermined map 6 on the liquid crystal display board 26.
Place it on top of the . As a result, the travel trajectory on the liquid crystal display board 26 and the figure on the map 6 are as follows.
The display screen S is illuminated by light from the projection light source 30.
is projected on.

By rotating the projection map rotation instruction unit ROT shown in FIG. 10 clockwise or counterclockwise, the motor 29 shown in FIG. Rotate 27. As a result, the map pattern projected onto the display screen S is rotated around the coordinate center of the map pattern, so that the driving direction of the car is substantially the same as that of the screen S shown in FIG. 10 on the display screen S. It becomes possible to project the map pattern upward. In the case shown in FIG. 11, needless to say, the traveling trajectory also extends upwards from the display screen S shown in FIG. Become.

As explained above, according to the present invention, the map necessary between departure and destination is programmed, and the corresponding map pattern is projected on the display screen or screen, and the projected map pattern It is configured so that it can be rotated arbitrarily. This makes it easy to display the displayed driving trajectory along with the map pattern so that it extends upwards or forwards of the display screen or screen, which matches well with the driver's sense of steering wheel operation. becomes.

[Brief explanation of drawings]

Figure 1 is an external view of the vehicle-mounted course guidance device that was previously applied for, Figure 2 is a flowchart illustrating the mode of programming a planned driving course using the vehicle-mounted course guidance device, and Figures 3 to 5 are Second
An explanatory diagram showing an example of the national map (block division map), regional index map, and necessary maps shown in the figure. FIG. 7 shows the structure of an embodiment of the map film, FIG. 8 is a block diagram of an embodiment of the present invention, and FIG. FIG. 10 shows an embodiment of the structure of the panel in the on-vehicle course guidance device of the present invention, and the 11th
The figure shows the configuration of an embodiment of the projection pattern rotation means used in the present invention. In the figure, 2 is a travel trajectory, 4 is a map film, 6 is a map, 8 is a microprocessor, 9 is a memory,
10 is a keyboard, 11 and 26 are displays, S is a screen, 23 and 24 are map film accommodating portions, 27 is a rotary table, 30 is a projection light source, and 32 is a lens system.

Claims (1)

[Claims] 1 Equipped with a display that displays information through electronic processing, a direction sensor, and a speed sensor, and a running trajectory is sequentially plotted on the display by electronic processing in response to the outputs from the direction sensor and speed sensor. and a map that projects the map pattern onto the display or screen in the on-vehicle course guidance device that displays the vehicle's own location by superimposing a map pattern on the driving trajectory displayed by the display screen. A projection means is provided to sequentially program a plurality of divided maps from the starting point to the destination in accordance with one's travel schedule via the keyboard, and the map projection means is used to program the above-mentioned display or screen. A projection pattern rotating means is provided for rotating a map pattern projected upward so that it can be flipped vertically, so that when the map pattern is superimposed on the traveling trajectory, the traveling trajectory extends substantially above or in front of the display or screen. An in-vehicle course guidance device characterized by projecting and displaying a map selected by the programming described above.