JPS5870128A - Displaying method for information on traveling on road - Google Patents

Abstract

PURPOSE:To retrieve and display required maps automatically at high speeds, to permit their positioning and to produce voices relating to the information on traveling of vehicles. CONSTITUTION:When a driver selects a required map number and inputs the same with a keyboard 1 by viewing the menue display on a display 6, a cassette tape is run forward at a high speed. At every passage through the recording section of a pilot signal 11, an nf1 frequency is outputted by a band-pass filter 19. An information processing circuit 2 counts the times of such detection, collates the same with the map number inputted by the keyboard 1, and shifts the tape traveling to a low-speed traveling state when both of them coincide. Said circuit confirms the contents of the data in accordance with the discriminating signal that arrives next, reads the data on the map and displays the same. There is an end signal in the last of the data on the map and when said signal is read out, a command is applied to a stopping control circuit 23. 3 Is a magnetic tape reproducer which reproduces the cassette tape wherein each map information and traveling information (voice signal) are recorded in the 1st track and the 2nd track.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a road travel information presentation method that displays the trajectory of a moving object such as an automobile (hereinafter referred to as a vehicle) on a map and that simplifies map searches.

Conventionally, systems for displaying a vehicle's driving trajectory on a map displayed the driving path on a CRT screen, and a map printed on a transparent film was superimposed on top of that to display the driving path and current location. . However, with this method, you manually select the necessary map from an atlas all over Japan, and the trajectory of the entrainment is shown on the map! 1 (As you can see, it is necessary to align the i6 with the screen of the cathode ray tube and attach it, which is very time-consuming.

The present invention has been devised to eliminate the above-mentioned drawbacks. Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 is a block diagram showing the basic configuration of a road driving information presentation system according to the present invention. In the figure, 1 is a keyboard that the driver uses to retrieve map information;
is a magnetic tape that processes digitalized map information, displays it on a cathode ray tube display device 6, and records map information and driving information (audio signal) in a second trunk, and plays back a cassette tape to be described later. In the playback device, 4 is a speed sensor that detects the running speed of the vehicle, and 5 is a direction sensor that detects the traveling direction of the vehicle. Items 1 to 6 above are installed in a vehicle. FIG. 2 is a diagram showing an example of the recording arrangement of information recorded on the cassette tape 7 used in FIG.
0 is composed of a pilot signal 11 having a constant frequency f1, followed by an information signal 12 having a frequency sufficiently higher than the constant frequency f1. The constant frequency of the pilot signal 11 is set to be low, for example, about 75H2, and the frequency of the information signal is selected to be a sufficiently high frequency equal to the product of the speed ratio n of the tape running at low speed to high speed and the frequency f1 of the pilot signal. There is. The information signal 12 is a data identification signal 13,
Menu data signal 14, program data signal 16,
It includes a map data signal 17, an end signal 16, etc. The data identification signal 13 is a signal that instructs how to process data contents, and uses a specific code signal. It is recorded before the menu data signal 14, program data signal 16, and map data signal 17. The end signal 16 is a signal indicating that the above data signal has ended, and is recorded at the end of the above data. In the menu data signal 14, the data number of each map is recorded as a code signal, and when an instruction to display menu data is received from the keyboard 1 shown in FIG. A biloft signal 11 is recorded.

Incidentally, in FIG. 2, numeral 9 indicates a second track, in which an audio signal 18 relating to vehicle running information is recorded.

FIG. 3 is a block diagram showing the functions of a magnetic tape reproducing device α3, which is the information reproducing device used in the present invention.

This has a function that can identify commands from the end shaft processing circuit 2 to perform high-speed running, low-speed running, high-speed reverse running, and stopping of the cassette tape 7, and automatically control the running state of the magnetic tape. It is something that we have. Furthermore, it has a magnetic head 27 for reading recorded signals from the cassette tape 7, and has a function of reading signals even when the tape is running at low speed or high speed forward or reverse.

The bandpass filter 19 is for extracting the frequency nf from the pilot signal read out during high-speed forward and reverse running, and has the characteristics shown by h in FIG. Similarly, the bandpass filter 20 has characteristics as shown by B in FIG. 4, and is used to extract signals of 12 or more frequencies when the vehicle is running at low speed. The read pilot signal 11 and information signal 12ij are supplied to an information processing circuit 2 including a microcomputer, memory, etc. for processing the above signals. When a cassette tape is loaded into the magnetic tape reproducing device 3 and the driver gives a start command to the taste processing circuit 2 using the keyboard 1, a command is applied to the high speed reverse running control circuit 25 through the program identification circuit 21. The cassette tape 7 enters a high-speed reverse running state and is rewound to the beginning of the tape, and the menu data signal 14
(The beginning signal 11 is cued. Next, a command is applied to the low-speed forward running control circuit 22, and the cassette tape 7 enters a low-speed forward running state and passes through the recording section of the first ending signal. , the frequency of the pilot signal from the cassette tape 7 is f,
．． 20 cannot pass through, and no signal is applied to the information processing circuit 2.

Next, when the tape runs forward at low speed to the recording section of the data identification signal 13, the signal of the frequency f2 passes through the bandpass filter 20 and is applied to the information processing circuit 2. Next, the menu data signal 14 is The information processing circuit 2 recognizes that this is applied, processes the next menu data signal 14, and displays a menu on the display device Se.

Next, the driver looks at the menu display, selects the required map number, and inputs it using the keyboard 1. Cassette tapes become deaf when running at high speed. ] ζ The recording part of the Ironoto signal 11,
nf by filter 19 every time i pass
, the wave number of n is detected. The information processing circuit 2 counts the number of detections and compares it with the map number inputted on the keyboard 1. When a match is found, the tape running is shifted to a low speed running state. The next identification signal confirms the data content, reads the map data, and displays it.

Furthermore, when a map in front of the displayed map is needed, it can be displayed by simply doing the same thing as above. There is an end signal at the end of the map data, and when this signal is read out, a command is applied to the stop control circuit 23. Then, tape running stops.

Note that 26 in FIG. 3 is a tape drive device that drives the cassette tape 7 to run, and includes a motor, a capstan, a pinch roller, and the like.

As explained above, according to the present invention, a desired map can be searched and displayed automatically at high speed, and position alignment can be performed. Additionally, along with the display of the map, a voice message relating to vehicle travel information is produced, allowing the driver to grasp the surrounding situation from this information, making it easier to manually determine the current location.

If you drive the vehicle after inputting the current location, the direction sensor 6 and speed sensor 4 will determine the direction in which the vehicle is traveling.

Of course, the travel distance is supplied to the information processing circuit 2 as a code signal, and the travel trajectory is drawn on the map.

[Brief explanation of the drawing]

FIG. 1 is a basic block diagram showing an example of the road driving information presentation method according to the present invention, FIG. 2 is a diagram showing an example of the arrangement of information recording patterns on a cassette tape used in the present invention, and FIG. 3 is a diagram showing an example of the arrangement of information recording patterns on a cassette tape used in the present invention. A block diagram illustrating an example of the configuration of the information reproducing apparatus used, FIG. 3 is a characteristic diagram of a bandpass filter used in the information reproducing apparatus section shown in FIG. 3. 1...Keyboard, 2...Information processing circuit, 3...Magnetic tape playback device, 4...
・Related sensor, 5... Orientation sensor, 6...
...Display device, 7...Cassette tape, 8'.
...First trunk, 9...Second track, 1o...Signal group, 11...Pilot signal, 12...Information signal, 13...
Data is a separate signal, 14...Menu data signal, 15...End γ signal, 16...Program data signal, 17...Map data signal, 1
8...Audio signal, 19.20...Band 0 pass filter, 21...Program identification circuit,
22-...Low speed forward running control circuit, 23...
- Stop control circuit, 24... High-speed forward running control circuit, 26... High-speed reverse running control circuit, 26...
...Tape drive. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 12rXJ 1113 Figure

Claims (2)

[Claims] (1) A recording medium on which map information is recorded, an information reproducing device that reproduces the information recorded on the recording medium, a keyboard that the vehicle driver inputs to obtain driving information, and a sensor for detecting the direction of travel; an information processing circuit for processing reproduction information from the information reproduction device; detection information from the sensor; and human input information from the keyboard; and based on output data of the information processing circuit. A method for presenting road driving information to a driver using a display device that displays road driving information to the driver, wherein digitized map information is recorded on the first truck as the recording medium. , a cassette tape on which an audio signal related to vehicle running information is recorded is used in the second truck, the cassette tape is loaded into the information reproducing device, map information and running information are read out, and the map information is processed by the information processing. A method for presenting road driving information, characterized in that the driving information is processed by a circuit and visually displayed by the display device, and the driving information is audibly pronounced. (2) Information in the first track where map information is recorded is a pilot signal for searching map information;
A data identification signal that identifies the data contents, a menu data signal that displays the map information menu recorded on the cassette tape, an end signal that indicates that the data has ended, and various program data including map information. By loading the cassette tape into the information reproducing device, a menu is first displayed on the display device, and the driver inputs alphanumeric characters or place names displayed in the menu using a keyboard. , a road driving information presentation method according to claim (1), characterized in that a map can be searched.