JPS6231027A - On-vehicle cd player device equipped with area information display function - Google Patents

Abstract

PURPOSE:To obtain easily and instantaneously area information on the area of movement destination when it is necessary by storing image data on area information on respective areas in a specific area of the subcode of music data stored on a compact disk. CONSTITUTION:The compact disk has image data on area information on respective areas stored in the specific area of the subcode of its stored music data. Consequently, a display device driving circuit displays area information images on a display device on the basis of the area information image data in the specific area of the subcode read out of the compact disk by a player circuit. Therefore, area information such as maps of destination areas, broadcasting station information, and sightseeing guidance is easily obtained in a short time even at a remote destination.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is an in-vehicle compact computer equipped with a regional information display function.
The present invention relates to a disc (CD) player device.

The CD player device according to the present invention is installed particularly in a car or the like, and is used to provide local information such as map information, broadcasting station information (information such as reception frequency and channel), or tourist/tourist information of the area when driving to the destination area. etc. can be easily obtained.

[Conventional technology]

Conventionally, when traveling to a distant place by car, people have used the atlas they brought with them to look up road maps of that area. In addition, in order to listen to local radio and television broadcast programs on a car radio or TV, it is necessary to check the broadcasting station frequency of the destination in advance from a program guide such as a newspaper, or preset it on the radio etc. Either they leave it on or they search for the broadcast station frequency locally. When searching locally, the tuner of a radio or other device is turned on at random to locate and select a broadcasting station.

[Problem that the invention seeks to solve]

However, the above is inconvenient and troublesome. Especially when trying to receive traffic information from local radio broadcasts in that area, you may not know the broadcasting station frequency, or the station you randomly selected may be a high-power radio wave from another area. Many people have experienced the inconvenience of

Therefore, the object of the present invention is to
Focusing on the fact that a player device is capable of storing a large amount of information, the present invention aims to easily and instantly obtain regional information about the destination area, such as road map information, broadcast station information, sightseeing information, etc., when necessary. An object of the present invention is to provide an in-vehicle CD player device having a regional information display function.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention basically uses a compact disc in which image data of regional information of each place is stored in a predetermined area of the subcode of song data stored on a compact disc. Disc provided.

In addition, in the present invention, as another form, a compact
A compact disc in which image data of regional information for each region is stored in a predetermined area of the subcode of song data stored on the disc, a player circuit for reading stored data from the compact disc, and a display for displaying regional information images. There is provided an in-vehicle CD player device with a regional information display function, which includes a display device driving circuit that controls displaying a regional information image on a display device based on subcode data read by the player circuit. Ru.

[For production]

The display driving circuit displays the regional information image on the display based on the regional information image data in the predetermined area of the subcode read from the compact disc by the player circuit.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing a block configuration of a vehicle-mounted CD player device as an embodiment of the present invention.

In FIG. 1, numeral 1 is a compact disc (CD), and regional information of each region is stored in a subcode data section, as will be explained in detail later.

11 is a spindle motor for rotating the disk 1 at a constant speed; 12 is an optical pickup that reads information on the disk based on the intensity of reflected laser light; and 13 is an RF amplification & PLL circuit that amplifies the information signal and reproduces the clock. be.

Reference numeral 14 denotes an EFM demodulation circuit for demodulating EFM modulated information signals, which demodulates EFM data, demodulates subcode signals, detects frame period signals, protects them from dropouts, and interpolates them, and generates ink face signals. I do.

Reference numeral 15 denotes an error correction/data control & interpolation port for detecting/correcting and interpolating error data and aligning data;
6, average value interpolation, generation of reference signal for CLV (constant linear velocity), sending interface signal to DA converter 17, CI using super strategy
Perform RC decoding.

16 is a RAM for absorbing rotational unevenness and data alignment, and 17 is a D for converting a digital signal of audio data into an analog signal.
A converter, 18 and 19 are low-pass filters, 20 is a feed control circuit for moving the optical big amplifier, 21 is a trace control circuit that controls focus and tracking, and 22 is a line control circuit for controlling the disk based on the data read from the disk. This is a rotation control circuit that controls the speed to be constant. Reference numeral 23 denotes a system controller, which performs controls such as transmitting the user's song selection operation to the feed control circuit 20 to read the desired song, and displaying the trace status of the disc on the display unit.

3 is a subcode decoder that receives subcode data from the EFM demodulation circuit, and includes a serial/parallel conversion circuit 31, a dinterleave circuit 32, a P error correction circuit 33, and a Q error correction output ink face circuit 34. configured. 4 is a CRT drive circuit, and 5 is a C for image display.
It is RT.

The CRT drive circuit 4 is a circuit that performs control to display an image on the CRTS based on the subcode data input from the subcode decoder 3, and includes input/output ink faces 41 and 42, a central processing unit (CPU) ) 43, a memory circuit 44, a CRT control circuit 45, and the like. The memory circuit 44 includes video RAM 44 aSRAM 44 b, RO
Consists of M44c. Connected to the input/output interface 42 are a switch 46 for selecting a map image and a switch 47 for selecting a broadcast station information image.

FIG. 2 shows subcode frames in the information signal recorded on the disc 1. This subcode frame is 9
8 symbols P, Q, R, S, T.

Consists of U, V, and W data. The P data includes a pause signal indicating the position of the beginning of the song, and is used to locate the beginning of the song. The Q data contains information such as the track number, song time, and address of the song.

TV graphics data is stored in symbols 0 to 23 of the R-W data, and FIG. 3 shows its pack configuration. 4 in this TV graphics data
~19 symbols are data fields, and the format of the data fields is shown in FIG.

The format of FIG. 4 will be explained next. First, the image on the screen is expressed by a font of 18 rows x 50 columns as shown in Figure 5, and each font is represented by 12 rows x 6 columns of pixels (pixels) as shown in Figure 6. ). FONT in FIG. 4 is an area containing data of one font of this display image, y is the upper left pixel of the font, and 2 is the data of the oldest and lower pixel of the font. When the value of this data is O, the pixel of the displayed image becomes the background color, and when it is 1, the pixel becomes the foreground color.

Address data is stored in ROW and COLUMN to indicate which position of the font in the display image shown in FIG. 5 the font data stored in FON T is located. COL OR (0) is the color number of the background color, CO
L OR (11 is the color number data of the foreground color. CH is channel data, consisting of channels 0 to 15,
Indicates what type of image data the data in the FONT is. In other words, channels 0 to 7 indicate that the image data is map data such as the map shown in FIG. be.

Channels 8 to 11 indicate that the displayed image is, for example, place name and map symbol data as shown in FIG. 15 channel is a radio/video image as shown in FIG.
Indicates that it is a broadcast station information image of a television station.

The above-mentioned subcode data of regional information for each region corresponds to each song stored on the compact disc. That is, in this embodiment, the area information of the subcode data of the first song (track number 1) is, for example, the 10th song.
As shown in the figure, this is a title table showing the correspondence between place names and track numbers. For example, as shown in Figure 11, the regional information for the second track (track number 2) is a map and broadcast station information for the Osaka area, and the regional information for the third track is a map and broadcast station information for the Kyoto area. Become.

The operation of the apparatus of this embodiment will be explained below with reference to FIG. FIG. 12 is a flowchart showing the procedure for reading data from a disk, which is performed by the apparatus of this embodiment.

First, the CD player is put into operation and commanded to display regional information using the operation unit 24 (step Sl).

Then, the system controller 23 rotates the motor 11 and moves the optical pickup 12 to search in fast forward for the beginning of the first song of track number 1 (step S2). When detected (step S3), fast-forwarding is stopped at the beginning of the song, a play operation is started, and the subcode data of the first song is read (step S4.35). The read subcode data is sent to the CRT drive circuit 4 via the subcode decoder 3, and the image data is converted to V-R under the control of the CPU 43.
It is stored in AM44a.

When all the subcode data of the first song is read out,
The CRT drive circuit 4 displays an image on the CRT (step S6). This image is the title table in FIG. Based on this title table, the operator inputs the track number corresponding to the area on which the map or the like is desired to be examined using the keys on the operation unit 24 (step S7). Then, the system controller 23 searches for the track number entered manually, and when the beginning of the corresponding song is detected (step S
9) Put the device into play mode and output subcode data one after another (step SIO, 5ll) cCRT drive circuit 4 is configured with P-W data of subcode data sent from subcode decoder 3. The channel (CH) data in the pack to be sent is determined, and it is checked whether the image data is map data or broadcasting station data. Channel data is 1
When it is determined that the data is broadcast station data in step 5, the CPU 43 writes the data into the broadcast station image area of the V-RAM 44a according to the back command, and also sets the channel data to 0 to 7.
When it is map data, it is written in the map image area of the V-RAM 44a.

The operator turns on the map switch 46 if he wants to display a map image on the CRT, or turns on the broadcast station switch 47 if he wants to display a broadcast station information image. As a result, cpty4s displays a map image as shown in Figure 7 or information on receivable broadcast stations in the area as shown in Figure 9.
Display above.

In addition to the above-mentioned information, the information written in the R-W data of the subcode data may be regional information such as tourist information or tourist information for the region.

〔Effect of the invention〕

According to the present invention, even when traveling to a distant place by car, it is possible to easily obtain local information such as a map of the place, broadcast station information, tourist information, etc. in a short time, which is very convenient.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an in-vehicle CD player equipped with a regional information display function as an embodiment of the present invention, FIG. 2 is a diagram showing the frame structure of subcode data, and FIG. 3 is a diagram showing the subcode data. 4 shows the format of the data field in FIG. 3, FIG. 5 shows the structure of the CRT image, and FIG. Figures 7 to 10 are diagrams showing examples of images displayed on a CRT, Figure 11 is a diagram showing the correspondence between track numbers and regional information, and Figure 12 is a diagram showing the structure of the font in the figure. 2 is a flowchart showing the procedure of a data read operation performed in the embodiment device of FIG. 1. FIG. 1-Compact disc, 3-Subcode decoder, 4-CRT drive circuit, 5-CRT. Figure 2 Figure 3 Figure 4 0 12345 46474
8496 pixels Figure 5 Figure 6 Figure 8 Figure 9 Figure 10 Country Figure 11

Claims (1)

[Scope of Claims] 1. A compact disc in which image data of regional information of each place is stored in a predetermined area of the subcode of song data stored on the compact disc. 2. A compact disc in which image data of regional information for each region is stored in a predetermined area of the subcode of the song data stored on the compact disc, a player circuit that reads the stored data from the compact disc, and a display of regional information images. An in-vehicle compact vehicle equipped with a regional information display function, which is equipped with a display device for displaying regional information, and a display drive circuit that controls displaying regional information images on the display device based on the subcode data read by the player circuit. Disc player device.