JPS61290475A - Information recording carrier reproducer - 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 [Field of Industrial Application] The present invention relates to an apparatus for reproducing an information recording carrier on which image information is recorded.

[Conventional technology]

In compact discs currently on the market, audio signals are recorded as the information signals. Of course, the audio signal is an analog signal, so this analog signal is converted into an AD converter (analog to D) on the disc.
The digitized signal after digital conversion) is recorded. As this digitized signal,
It is clear that a compact disc can reproduce video information by using a digitized video signal instead of a digitized audio signal. Digitizing video information means, for example, converting a TV screen to 20 o x 25 o
Divided into 6 small sections, each section has address information and R.

This can be easily done by providing G, B (Red, Green, Blue) color information in 3 or 4 bits. A disc on which image information is recorded in this manner is sometimes called a CD-ROM, and will be referred to as a CD-ROM hereinafter for convenience.

Now, N1 diagram 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 a case where you go from point A to point D on a map. First, the map information shown in FIG. 2 is read out from the CD-ROM and displayed on the screen of, for example, a TV. Since address information is attached to each small section from position C on the screen, it can be easily identified. 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 latitude information is also recorded in the CD-ROM along with the map information. Since the navigation system can determine the absolute latitude and longitude position of the own vehicle using geomagnetism or artificial satellites, the position of the own vehicle can be easily shown on the currently displayed map information screen. In this way, a navigation system using a CD-ROM can automatically indicate the position of the own 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 stored in the -tan memory 2, the information signal 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 bag w4 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 the address information calculation circuit 6
The position information of the own vehicle is input to the image processing circuit 3 in order to compare the position of the own vehicle with the position on the map in the circuit 6 and display it on the one-image display device 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, in this system, the vehicle's location is automatically displayed on the map,
It's very convenient.

[Problem that the invention seeks to solve]

However, even with such a convenient system, there are 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 on the road map, town name display board, etc. Heading beside Ri,
The subsequent task of checking the town name on the map was very tedious and often involved stopping the vehicle.

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 device according to the present invention records road information such as a road name or town name in addition to address information and image information on an information recording carrier, and when the address with the road information matches the own vehicle position, Road information is displayed using an appropriate display means.

[For production]

Road information is recorded at addresses that correspond to important points along the vehicle's route, and when the vehicle reaches a position that matches the address, the road information is stored in memory and transmitted as appropriate when requested by the driver. .

〔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 road information extraction circuit 21
Memory α (second memo IJ) that stores the output of 23
24 is an audio processing circuit that receives the output of the memo 0a reading circuit 23 and restores the signal content to audio information; 25 is an audio display device connected to the audio processing circuit 24; It is. The other configurations are the same as before. Furthermore, as shown in FIG. 4, the road information is written to the CD-ROM as a set of address information A, image information B, and road information C, and a set of, for example, 256 x 200 pieces of road information corresponding to all the small sections on the screen is written. The set is recorded. The road information includes, for example, the town names indicated by ■, O2■, and ■ in FIG. 5. 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 map information display and vehicle position display on the image display device 4.\ are the same as conventional ones, so their explanation will be omitted. -tan, memory (first memory) 2
Among the information signals stored in the road information extraction circuit 21, 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 on the map where the own vehicle position and road information are calculated by the calculation of the address information calculation circuit 6, for example, V, W in FIG.
X.

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 of the address to the memory α22.

This road information is stored in the memory a22, and the driver waits for the driver to express his/her desire for the road information by some means. When this indication of intention becomes a road information display command, this command is transmitted to the memory α readout circuit 23, and thereby the memory α readout circuit 23 is transferred to the memory α22.
Read out the road information in the file and send it to the voice processor fg for $24 once. The audio processing circuit 24 processes the road information such as ■, Q,
The town name represented by (+) and ■ is changed into a form that can be expressed vocally and sent to the voice 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, road information such as road names and town names can be automatically obtained at any location on a map, making it extremely convenient and safe when entering an unfamiliar city or complex road. It has the effect of being able to drive.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the device of the present invention, Fig. 2 is a map screen reproduced by the conventional device, Fig. 3 is a block diagram of the conventional device, and Fig. 4 is information recorded on the information recording carrier according to the present invention. FIG. 5, which is an explanatory diagram of the signals, is a map screen reproduced by the device of 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 a (second memory), 23... Memory α reading circuit, 2
4... Audio processing circuit, 25... Audio display device. Note that the same reference numerals in the figures indicate the same or corresponding parts. ■Marriage Figure 4 Figure 5 procedural amendment (voluntary)

Claims (2)

[Claims] (1) In an information recording carrier reproducing device that reproduces information from an information recording carrier in which address information, image information, and road information on the image display surface are recorded for each image subdivision on the image display surface, A first memory that stores the reproduced signal, a vehicle position detection device that detects the position of the vehicle on the earth, and vehicle position information based on the output of the first memory and the output of the vehicle position detection device. an address information calculation circuit that outputs matching information indicating that the address with the road information matches the own vehicle position; and an address information calculation circuit that receives the output of the first memory and the own vehicle position information from the address information calculation circuit. an image display means for displaying image information and vehicle position information; a road information extraction circuit that extracts road information from the output of the first memory and outputs the road information when the matching information is obtained; a second memory that stores the output of the extraction circuit; and a second memory that reads road information from the second memory in response to a road information display command.
1. An information recording carrier reproducing apparatus comprising: a second memory reading circuit; and road information display means for displaying road information in response to an output from the second memory reading circuit. (2) The information recording carrier reproducing apparatus as set forth in claim 1, wherein the road information display means displays sound.