JPH0581908B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information recording carrier reproducing device on which image information is recorded.

[Prior Art] Compact discs currently on the market record audio signals as their information signals. Of course, since the audio signal is an analog signal, a digital signal obtained by performing AD conversion (Analog to Digital conversion) of this analog signal is recorded on the disk. It is clear that the compact disc can reproduce video information by using a digitized video signal instead of a digitized audio signal as the digitized signal. Digitizing video information means, for example, dividing a TV screen into small sections of 200 vertically and 256 horizontally, and storing address information and R, G, B in each section.
This can be easily done by providing color information (Red, Green, Blue) in 3 or 4 bits. A compact disk on which image information is recorded in this manner is sometimes called a CD-ROM, and will be referred to hereinafter as a CD-ROM for convenience.

Now, map information is used as such image information and is used as a guide map while driving a car. It is a navigation system. An example of the navigation system will be explained with reference to FIG. For example, consider going from point A to point D on a map. First, CD-ROM
The map information shown in FIG. 2 is read out, for example,
It is displayed on a TV screen, etc. The position on the screen can be easily identified because address information is attached to each of the small sections. If absolute latitude and longitude information on the earth is given for one point on the screen, for example, the lower left corner indicated by X, then all the latitude and longitude on the screen can be determined. Naturally, this latitude and longitude information is also written on the CD-ROM along with the map information. Since the navigation system can determine the absolute longitude and latitude position of the vehicle using geomagnetism or artificial satellites, the location of the vehicle can be easily shown on the currently displayed map information screen. CD like this
- A navigation system using ROM can automatically show the location of your vehicle on the screen, which is very convenient for driving.

A conventional device is shown in FIG. The information signal recorded on the CD-ROM is reproduced by the CD-ROM driver 1, and after being temporarily stored in the memory 2, it is separated into image information and address information, and is input to the image processing circuit 3. Ru. The image processing circuit 3 processes the two types of signals into a form suitable for an image display device 4 such as a TV, and then sends them to the image display device 4. On the other hand, the position information detected by the own vehicle position detection device 5 and the address information are input to the address information calculation circuit 6, where the position of the own vehicle is compared with the position on the map, and the image display device The own vehicle position information is input to the image processing circuit 3 to be displayed on the image processing circuit 4. In the image processing circuit 3, the image information and the own vehicle position information are added together and displayed on the image display device 4. In this way, this system automatically displays the vehicle's location on the map, which is very convenient.

[Problem that the invention seeks to solve]

However, even with such a convenient system, there were the following inconveniences. For example, consider a case where you go to an unfamiliar city for the purpose of sightseeing. In this case, it is customary to proceed while checking the current location using road signs, town name display boards, etc., but it is difficult to find the town name display board on the side of the road and then check the town name on a map. It was troublesome and often involved stopping the car.

The present invention has been made to solve the above-mentioned problems, and is an information recording carrier reproducing device that allows you to reach your destination while obtaining necessary road information even when driving in a new city. The purpose is to obtain equipment.

[Means for solving problems]

The information recording carrier reproducing apparatus according to the present invention includes a plurality of image map information obtained by dividing a road map into small sections on an image display surface, address information provided for each of the image map information divided into the small sections, and the An information record carrier that records road information related to the specific location, consisting of an address provided at a specific location on the road based on image map information, and image information or audio information provided corresponding to the address; A vehicle position calculation means for calculating the current position; an image display means for displaying the image map information and the current position of the vehicle; and a vehicle position calculated by the vehicle position calculation means and the address. and road information display means for searching and displaying road information provided corresponding to the specified address from the information recording carrier when the address matches the specified position.

[Effect]

In the information recording carrier reproducing device according to the present invention, an address is attached to a specific position on the road where the image is displayed,
When this position matches the arrival position of the vehicle, road information related to the position assigned this address is retrieved from the information record carrier and displayed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 21 is a road information extraction circuit, 22 is a memory α (second memory) that stores the output of the road information extraction circuit 21, 23 is a memory α read circuit that reads information from this memory α 22, and 24 is a memory α read circuit 23. An audio processing circuit 25 is an audio display device connected to the audio processing circuit 24, which receives the output and restores the signal content to audio information. Other configurations are the same as before. In addition, when writing the road information to the CD-ROM, as shown in FIG. 4, address information A, image information B, and road information C are set, and the road information is written as a set of, for example, 256 200 sets are recorded. As this road information, for example, town name information indicated by , , in FIG. 5 is included. In this way, new town name information will be obtained when the car passes through the points indicated by V, W, X, and Y in FIG. The dotted lines in Figure 5 are the boundaries of each town. Next, the operation of the above device will be explained. The display of map information and the display of the own vehicle's position on the image display device 4 are the same as conventional ones, and therefore their explanation will be omitted. Once, among the information signals stored in the memory (first memory) 2, road information is input to the road information extraction circuit 21. Further, matching information is inputted to the circuit 21 from the address information calculation circuit 6. This matching information is the address information calculation circuit 6
For example, the address on the map with the own vehicle position and road information calculated by the calculation of V, W, X, in Fig. 5,
This is information indicating that the address indicated by Y matches. Upon receiving this matching information, the road information extraction circuit 21 sends the road information corresponding to the address to the memory α22. This road information is temporarily stored in the memory α22, and the driver waits for the driver to indicate by some means that he/she needs the road information. When this indication of intention becomes a road information display command, this command is transmitted to the memory α reading circuit 23, which causes the memory α reading circuit 23 to read out the road information in the memory α22, and the voice processing circuit 2
Tell 4. The audio processing circuit 24 converts the road information, for example, a town name expressed by , into a format that can be expressed vocally, and sends it to the audio display device 25 .
This audio display device 25 allows the driver to hear the name of the town where the vehicle is currently driving.

Incidentally, in the above embodiment, an example was shown in which the road information is displayed by sound, but the road information may be displayed as an image by the image display device 4. Furthermore, the road information may include not only the town name but also the route number.

〔Effect of the invention〕

As described above, according to the present invention, a plurality of image map information obtained by dividing a road map into small sections on an image display surface, address information provided for each of the image map information divided into the small sections, and the image An information record carrier that records road information related to the specific location, consisting of an address provided at a specific location on the road in map information, image information or audio information provided corresponding to the address, and the current state of the own vehicle. an own vehicle position calculation means for calculating a position; an image display means for displaying the image map information and the current position of the own vehicle; and an identification device provided with the own vehicle position calculated by the own vehicle position calculation means and the address. and a road information display means for searching and displaying road information provided corresponding to the address from the information record carrier when the address matches the address, so that the road information display means searches the information record carrier and displays the road information provided corresponding to the address. Also, at the change of town name or route number on the road while driving,
Since the name of the town and route number in the direction in which the vehicle will be traveling can be instantly known through image and audio information, the vehicle can be driven very easily and safely.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an information recording carrier reproducing device according to the present invention, FIG. 2 is a map screen reproduced by a conventional device, FIG. 3 is a block diagram of a conventional device, and FIG.
FIG. 5 is an explanatory diagram of information signals recorded on the information recording carrier according to the present invention, and FIG. 5 is a map screen reproduced by the information recording carrier reproducing apparatus according to the present invention. DESCRIPTION OF SYMBOLS 1...CD-ROM driver, 2...Memory (first memory), 3...Image processing circuit, 4...Image display device, 5...Vehicle position detection device, 6...Address information calculation circuit, 21...Road information extraction circuit, 22
...Memory α (second memory), 23...Memory α
Reading circuit, 24... audio processing circuit, 25... audio display device. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A plurality of image map information obtained by dividing a road map into small sections on an image display surface, address information provided for each of the image map information divided into the small sections, and the image map information. An address provided at a specific location on the road, an information record carrier that records road information related to the specific location consisting of image information or audio information provided corresponding to the address, and calculation of the current location of the own vehicle. an own vehicle position calculation means for displaying the image map information and the current position of the own vehicle; and an own vehicle position calculated by the own vehicle position calculation means and a specific position where the address is provided. An information recording carrier reproducing device characterized in that it is provided with a road information display means for searching and displaying road information provided corresponding to the address from the information recording carrier when the address matches.