JPS61290476A - 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, since the audio signal is an analog signal, this analog signal is converted into an AD converter (Analog to D) on the disc.
The digitized signal after digital conversion) is recorded. It is clear that the compact disc can reproduce video information if a signal obtained by digitizing a video signal is used instead of a signal obtained by digitizing an audio signal as the digitized signal. Digitization of video information means, for example, converting a TV screen to [20G, horizontal 2
Divided into 56 small sections, each section has address information and R2G,
This can be easily done by providing the color information of B (Red, Green, Blue) in 3 or 4 bits.A compact disc on which image information is recorded in this way is sometimes called a CD-ROM, and 1
&For convenience, it will be written as CD-ROM.

Now, map information is used as such image information and is used as a guide map while driving a car. An example of the O navigation system, which is one navigation system, will be explained with reference to FIG. For example, consider going from point A to point D on a map. first'
, the map information shown in FIG. 2 is read out from the CD7ROM and displayed on the screen of, for example, a TV. 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 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 in S7 on the CD-ROM is reproduced by the CD-ROM driver 1,
After this information signal is stored in the storage memory 2, it is separated into image information and address information and input to the image processing circuit 3. The image processing circuit 3 uses an image display device 4 such as a TV, for example.
After processing the two types of signals in a form suitable for the purpose, they are sent to the image display bag @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 4 To display on top,
Own vehicle position information is input to the image processing circuit 3. 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 are the following inconveniences. That is, the CD playback device is a CD-R
It is possible to play not only OM but also CDs with PCM audio. Therefore, after the user retrieves the desired map information from the CD-ROM and stores it in the memory 2, the user can play back the CCD-1t.
You can enjoy music by removing the O disc from the playback device 2M and inserting a CD with PCM audio. in this case,
Since the memory 2 only contains one piece of map information, it is expected that as the drive progresses, it will protrude outside the map. However, drivers tend to overlook the occurrence of such situations because they are enjoying music, etc.

The present invention has been made to solve the above-mentioned problems, and it is possible to call the driver's attention when the driving position is about to deviate from the currently stored map. The object of the present invention is to obtain an information recording carrier reproducing device.

[Means for solving problems]

Information related to the present invention! ! The carrier reproducing device records alarm information in addition to address information and image information on the information recording carrier,
The alarm information is displayed on an appropriate display means when the address containing the alarm information matches the position of the own vehicle.

[For production]

Warning information is recorded at important points along the route of the vehicle, for example, at addresses corresponding to the periphery of the map, and when the own vehicle reaches a position matching the address, the warning information is displayed on a display means to notify the driver.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 21 is an alarm information extraction circuit, 22 is an audio processing circuit that receives the output of the alarm information extraction circuit 21 and restores the signal content to audio information, and 23 is an audio display device connected to the audio processing circuit. . Other configurations are the same as before.

Also, the writing of the above-mentioned alarm information to the CD-ROM is performed in the fourth
As shown in the figure, address information A, image information B, and alarm information C form a set, and for example, 256×200 sets corresponding to all the small sections on the screen are recorded. This alarm information is actually only stored at important addresses, such as the peripheral area of the map shown in FIG. 5 (outside the dashed line in the diagram). Here, it is assumed that the starting point is A, but the destination P protrudes from the currently displayed map and is within the next map. in this case,
The driving position cannot be displayed unless the next map is read from the CD-ROM.

Therefore, it is necessary to read and display the next map before the driving position goes off the map.

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. - Among the information signals stored in the memory 2, alarm information is input to the alarm information extraction circuit 21. Further, matching information is inputted to the circuit 21 from the address information calculation circuit 6. This matching information is information indicating that the vehicle position calculated by the address information calculation circuit 6 matches the address on the map where the alarm information is located, for example, the address shown in FIG. 5Z. Upon receiving this matching information, the alarm information extraction circuit 21 sends the alarm information of the address to the audio processing circuit 22. In this time @22, the alarm information is decoded into audio information and expressed as audio on the audio display device 23. For example, at the 2 points in FIG. 5, the words "Insert rCD-ROM" are uttered, and if the amount of information is to be further increased, the name of the map to be searched next may be announced. If the system is to be further enhanced, the address number in the CD-ROM of the next map to be searched will be included in this warning information, and the system will automatically search and display the map when the CD-ROM is inserted. It's good as well.

In the above embodiment, the alarm information is expressed by voice, but the alarm information may also be expressed on the image display device F4. Alternatively, it may be a function that simply lights up a warning lamp.

〔Effect of the invention〕

As described above, according to the present invention, warning information is automatically obtained at surrounding locations on the map, making it possible to drive very conveniently and safely when entering an unfamiliar city or a rough road. effective.

[Brief explanation of drawings]

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 is a map screen reproduced by the device of the present invention. 1... CD-ROM driver, 2 - Memory, 3...
Image processing circuit, 4... Image display device, 5 - Own vehicle position detection device, 6... Address information calculation circuit, 21... Alarm information extraction circuit, 22... Audio processing circuit, 23... Audio Display device. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (3)

[Claims] (1) In an information recording carrier reproducing device that reproduces information from an information recording carrier in which address information, image information, and alarm information on the image display surface are recorded for each image subdivision on the image display surface, A memory that stores the reproduced signals, a vehicle position detection device that detects the position of the vehicle on the earth, and a device that receives vehicle position information and alarm information based on the output of the memory and the output of the vehicle position detection device. An address information calculation circuit that outputs matching information indicating that the address and the vehicle position match, and an address information calculation circuit that receives the output of the memory and the vehicle position information from the address information calculation circuit and outputs image information and vehicle position information. an image display means for displaying an image; an alarm information extraction circuit for extracting alarm information from the output of the memory and outputting the alarm information when the matching information is obtained; and displaying alarm information in accordance with the output of the alarm information extraction circuit. An information recording carrier reproducing device characterized in that it is equipped with an alarm information display means for displaying alarm information. (2) The information recording carrier reproducing apparatus according to claim 1, wherein the alarm information display means displays audio. (3) The information recording carrier reproducing apparatus according to claim 1, wherein the alarm information display means displays an image.