JPS58115600A - Running track display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention reads a map recorded in an external memory using an arithmetic device composed of a microcomputer, etc., writes it into an image memory, and calculates a vehicle's travel trajectory from a direction and distance sensor. The present invention relates to a device that displays a map and a driving trajectory on a display.

Conventionally, in this Yuzu installation, it was necessary to write the travel trajectory data into the image memory that recorded the district data, and after writing the travel trajectory into the image RAM lt', only the travel trajectory was erased and only the map was stored. In order to display the map data, it is necessary to write the map data from an external memory such as a cassette tape to the image memory again, which is not sufficient in terms of quick response.

The present invention solves this problem, and aims to facilitate the display and erasure of driving trajectories on maps. A trajectory priority switching circuit is provided to display the driving trajectory with priority over the map data written in the image memory, and to display the driving trajectory with priority over the map data. As a result, the driving trajectory is displayed with priority on the map, and along with the stone, the F! on the map is displayed. When you want to read signs and characters, you can easily temporarily erase the travel path that gets in the way.

An embodiment of the present invention will be described below based on the drawings. 1st
The figure shows a block diagram thereof, and (1) is an arithmetic unit consisting of a microcomputer, read-on memory, random access memory, etc. (2)(a) (4) (
5) An image memory consisting of li random access memory, of which image memories (2), (3), and (4) are for displaying maps, and each displays the eight primary colors of red, edge, and blue. used for However, these image memories may be allocated not only to display the aforementioned eight primary colors but also to display a mixture thereof. Further, the double-image memo 9 (6) is used as a memory for displaying the vehicle's travel trajectory and comments. (6) (7) (8
) (9) is a shift register with an 8-bit parallel serial output, and shifts at a display clock that is 8 times the continuous output clock of the image memory (z) (a) (4/5). (G) is for skein, tape recorder, floor,
It is used as a data file for maps, etc. in external memory such as a B-disk. DC is a direction sensor that detects the direction of travel of the car, and the wheel is a calculation device (1
) is an orientation sensor interface circuit for connecting with (2) is a distance sensor which outputs pulses at fixed distance intervals according to the distance traveled by the car. (b) Counts and calculates the pulses from the distance sensor (to)! This is a distance sensor interface circuit for connecting with 1(1). @ is, for example, a CRT display such as an RGB monitor. Mouse is image memory (2) (3) (4) (6) and C
This is a monitor interface circuit with the RT display (2). In other words, it is a traveling trajectory control circuit that displays and erases the traveling trajectory. The prisoner is a trajectory priority display switching circuit for displaying the driving trajectory with priority over the map.11, NA
ND circuit (to), inversion circuit (6), OR circuit gradient, AN
It consists of four D circuits (2). ＠ is a clock generation circuit, which generates the timing lock necessary for the constituent circuits such as the clock signal of the arithmetic unit (1) and the clock of the shift register (6) (7) (s) (*). .

Next, the operation of the travel trajectory display device shown in FIG. 811 will be explained. Necessary map data out of the map data recorded in the external memory is written into the image memory (2), (3), and (4) by the finger of the arithmetic unit 0).

The map data written in the image memory (2) (4) is sequentially outputted in 1 lbii units by the arithmetic unit (υ), and is transferred to an 8-bit shift register (s) (7) by the timing signal generated from the clock generation circuit. ), then shifted and output as a serial signal.

When the running trajectory is not displayed, the output of the running trajectory control circuit is controlled by the arithmetic unit (1) so that it is at the “L° level, and the output of the NAND circuit is @H° regardless of the output of the shift register (・). In order to maintain the level, the output of the shift register (@) (7) (2) is directly passed through the OR circuit (Z) and AND circuit (2) of the trajectory priority display switching circuit (4), and is sent to the monitor interface circuit (B). applied.

The eighth circuit QQ of the monitor interface 7 is converted into a video signal for displaying the map as an image on the CRT display (2). When you start half-way driving with the map displayed on the C display (g), the direction sensor αD constantly detects the direction in which the car is traveling and collects the data necessary to transfer the data to the calculation device 1 (1). The data is converted by the direction sensor interface circuit (2) and transferred to the arithmetic unit (1). Similarly, a travel pulse is output from the distance sensor (to) according to the distance traveled by the car, data is converted by the distance sensor interface circuit (b), and the distance data is transferred to the arithmetic unit I (1). The arithmetic unit t (t) calculates the travel trajectory of the vehicle from the azimuth and distance data, and sequentially writes the travel trajectory data as image data into the travel trajectory image memory (6) at the same scale as the map as the vehicle travels.

Now, let's talk about when the output from the traveling trajectory control circuit reaches the °H0 level. The data in the 0 image memory (&) is sequentially input to the 8-bit shift register (9), and the parallel output of the image memory (5) is is converted into a serial output by the shift register (9).The part of the travel trajectory is written in the image memory (5) so as to be at the "H° level.Then, the location indicated by the travel trajectory is the NAND circuit (to). The output is “Lo”.The place where there is no running trajectory is NAND 1 circuit-
The output of is “Ho”. Here, the image memory (2) (3
) (4) is an image memory that displays red, green, and blue respectively, and is configured to display the traveling trajectory in red, and the output of the NAND circuit is -L- where the traveling trajectory is indicated.
Image memory that displays green and blue (3) (4)
Even if the output of is °H, the AND I circuit @(2) becomes the °L° level, and the traveling locus cannot be displayed in either green or blue. And the output of the NAND circuit is an inverting circuit (2)
Since the current is applied to the OR circuit (E) through the travel path, the output of the OR circuit (E) becomes H° and becomes red, regardless of the value in the image memory (2). OR circuit Sakaki, AN
The output of the D circuit (2) (2) is applied to the monitor interface circuit (2), and the image I! Figure 2 (4) shows an example in which only the 0 image memory (2) that is converted to a code is displayed on the CRT display (2), and only the image memory (3) is displayed on the CRT display (2).
An example of displaying on a display is shown in FIG. 2 (2), and an example of displaying only the image memory (4) on a CRT display is shown in FIG. 2 (6). Further, FIG. 2 shows an example in which only the image memory (5) showing the travel trajectory is displayed on the CRT display 4. In addition, Fig. 2 (2) shows a composite of Fig. 2 (5), color and illusion, and if the output of the traveling locus sub-axis circuit (rotation) is set to °H°, Fig. 8 C
As shown in the image display shown in F), the travel trajectory of Figure 12) is displayed on the map of Figure 2 (Roll) in priority to the map, and
If the output of the travel trajectory control circuit is set to °L°, it will display only the ground V regardless of the travel trajectory, resulting in an image display as shown in Figure 2 [F]. .Furthermore, the output of the travel trajectory control circuit (b) is set at regular intervals by °H°.

- By switching Lo, the driving trajectory can be displayed blinking on the map.

As can be seen from the above explanation, it is easy to display and erase the travel trajectory on the map, and it is also possible to display it blinking. You can also temporarily erase the driving path if it becomes a hindrance when reading symbols or characters on the map. This has the advantage of having the role of a map and the role of displaying a trajectory.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is an image display diagram in which map data written in multiple image memories is displayed one by one, and ma diagram υ is 1 The image display diagram that displays the traveling trajectory data written in the image memory of 1 sheet, $111 @) is the image display diagram that displays only the iti image memory for displaying the map, Figure 2 or fMa diagram ■ FIG. 3 is a double-image display diagram that also displays an image memory display showing a travel trajectory. (1)...Arithmetic unit, (2)-φ)...a image memory, (6)-(9)--shift register, 顛...external memory, (b)...direction sensor, (b) - Direction sensor interface circuit, (2) - Distance sensor, (b)
... Distance sensor interface circuit, μ5-CRT
Display, (2)--Monitor interface circuit, (B)...Travel trajectory control circuit, Prisoner-trajectory priority display switching circuit Agent Yoshihiro Morimoto Figure 1 f Figure 2 (C) CD)

Claims (1)

[Claims] L: A plurality of image memories for displaying maps, etc., one image memory for displaying a car's travel trajectory, and an external memory such as a cassette tape recorder for storing map image data. , an arithmetic unit consisting of a microcomputer, a read-on memo random access memory, etc., a direction sensor and a distance sensor to know the trajectory of the car, and - the map data written in the image memo 5). T! A trajectory priority display switching circuit for displaying the trajectory with priority,
It features an interface circuit that converts the data written in the image memory into a video signal, and a display that displays the IIAWIA* line trajectory, and is designed to display the driving trajectory with priority over map data. A driving trajectory display device. 1. The traveling trajectory display device according to item 1 of the scope of the invention, characterized in that the traveling trajectory is displayed in rough dots by controlling the output of the traveling trajectory image memory at a constant cycle.