JP2518069B2 - CDI system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention is a CDI which reads out these data from a CDI disk holding sound data and image data and forms an image and a sound, such as CDI karaoke. Regarding the improvement of the system.

<Prior Art> A CDI system reads out these data from a CDI disc in which sound data and image data are stored based on the CDI standard by a CDI player, and the image data is displayed as an image on a display. Is output as sound from the sound system. Therefore, this CDI system can also be used, for example, as karaoke.

Conventional devices of this type include, for example, karaoke based on CD graphics. This CDG karaoke has, for example, the following configuration.

That is, as shown in FIGS. 9 (A), (B), and FIG. 10, sound data is stored in the CD for each sector at a constant interval, and image data (background image data and character image data) is stored. ) Is stored in the sectors between the sound data storage sectors.

For example, as shown in FIGS. 9 (A) and 9 (B), the character image “A” is superimposed on the background image on the first screen,
When "B", "C", and "D" are displayed, the characters (lyrics) are sequentially changed in color in synchronization with the progression "a", "b", "c", and "d". The case will be described.

In this case, as shown in FIG. 10, the sound data “a” is stored in the first sector, and the sound data “b” is stored in the sectors which are separated by a predetermined distance.
In addition, the sound data “C” are sequentially arranged at regular intervals. The background and character image data "A, B, C" are arranged in the sectors between these sound data. Further, image data "D" of the background and the characters are similarly arranged in the next sector. Then, in order to change the color of the character, the character image data “A” having the same font but a different color from the image data “A, B, C” arranged in the sector is replaced with the sound data “B”. Similarly, the character image data “B” of different color is sequentially arranged and stored in the next sector of the sound data “C”.

In this case, the character image data “A”, “B”,
"C" is configured to have font code data and color code data for each character. Then, when read, it is displayed as an overwrite on the screen.

<Problems to be Solved by the Invention> However, such a conventional karaoke based on CD graphics does not store the color change timing data of the character image in the CD sector, and there is room for storage. Therefore, when designing the timing of changing the character color on the CD in response to the generation of musical sounds as the song progresses, the changed character image data is set to the sector immediately after the sound data sector. There was a problem that they had to be arranged, and that the layout was required to be extremely accurate. For example, since the number of character images, the number of screens, and the timing of color change are different for each song, the data arrangement corresponding to these is complicated when laid out on a CD.

Therefore, an object of the present invention is to provide a simple CDI system in the case of designing a timing of changing an image attribute such as a character color.

<Means for Solving the Problems> As shown in FIG. 1, a CDI system according to the present invention is a CDI system.
A series of sectors set in the user area provided based on the DI standard is divided into a plurality of blocks, each block holds image data and sound data, and timing data is stored in a sector at a predetermined position in each block. Stored
An image display unit 300 that includes a CDI disc 100 and displays image data read from each block in real time on a display 200, and a sound reproduction unit 40 that reproduces sound based on the sound data read from each block in real time 40
0, a memory 500 that holds the timing data read from each block in real time in a rewritable manner, and the timing of comparing the elapsed time from the image display on the display 200 with the timing data and changing the attribute of the image. The CDI system is provided with a timing setting means 600 for setting the attribute and an attribute changing means 700 for changing the attribute of the image at the set timing.

<Operation> In the CDI system according to the present invention, the CDI disk 10
In 0, sound data, image data, and timing data are stored. The timing data sets the attribute of the image displayed based on the image data, for example, the timing for changing the coloring of the character image.

Therefore, the sound data, the image data, and the timing data read from the CDI disk 100 in real time are discriminated, the timing data is stored in the memory 500, the sound data is stored in the sound reproducing means 400, and the image data is stored in the image display means 300.
Each is transferred.

The timing setting means 600 sets the timing based on the timing data and the elapsed time from the image display on the display 200. At this timing, the attribute changing unit 700 changes the attribute of the display image, for example, the color of the character image.

Therefore, the CD for setting the timing of attribute changes
The data layout on the I disk is extremely easy.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.

2 to 8 are for explaining one embodiment of the CDI system according to the present invention. This example uses the CDI
This is an example of using the system as CDI karaoke.

In FIG. 2, reference numeral 21 denotes a CPU, which uses, for example, a 68000 series processor because it is necessary to perform real-time processing. A video processor (VDP) 22 sends and receives signals to and from the CPU 21, controls the VRAM 23, outputs a font pattern read from a font table, for example, to an RGB signal generator 24, and displays it on a display (CRT) 25. Construct the desired image.

A tone generator 26 is connected to the CPU 21, VDP 22 and VRAM 23 by a bus and supplies a predetermined sound generation signal to the sound system 27 based on the sound data. The sound system 27 is composed of, for example, an amplifier and a speaker.

Reference numeral 28 denotes an input / output device (I / O), which outputs external input from a keyboard (KBD) 29 to the CPU 21, for example.

Reference numeral 30 denotes an interface of the CDI player, which is connected to the CPU 21 and the like via the bus. Reference numeral 31 is also a working RAM connected to the CPU 21 by a bus. In the figure, 32 is a CDI disk.

As shown in FIG. 3, one spiral track 33 is designed on the surface of the CDI disk 32 based on the CDI standard. Ie CDI disk 32
In the above, a plurality of pits are arranged spirally as one track. Therefore, this CD
In the I disk 32, data is recorded in a spiral shape in the clockwise direction in the drawing from the inside to the outside in the radial direction (as a digital signal depending on the presence or absence of pits).

Then, the track 33 is scanned by the CDI player having the above configuration.

On the track 33, a disc label area A and a data area (user area) B are defined based on the CDI standard. The data area B is composed of a plurality of sectors.

The disc label area A is composed of a file table and the like. For example, the start addresses of a plurality of files (data groups) are recorded.

The data area B is a real-time file area, and includes character code data for displaying characters for a plurality of screens and their color code data, background image data for a plurality of screens, a series of sound data, and Timing data and are stored in each sector.

As shown in FIG. 4, the CDI disk 32 stores three pieces of music A, music B, and music C. Each song is composed of a plurality of screens, for example, song A is composed of screens 1 to 6. In addition, lyrics are displayed as a plurality of characters (for example, only two lines) on one screen, and these characters are divided into a plurality of blocks, for example, blocks 1 to 8 according to the speed of rewriting. There is. FIG. 4 shows this character data. Further, each of these blocks is composed of a plurality of dots.

The character code data for displaying the shape of the character and the color code data for displaying the color of the character stored in the real time file area B are read by the CPU 21 and transferred to the VRAM 23. For example, color code data is stored using a color table called CLUT. Although not shown, the character code data is for creating a character image on the CRT 25 using a font ROM or the like. The sound data and the background image data stored in the real-time file area B are processed in real time by the CPU 21 as a real-time file. The sound data is transferred to the tone generator 26. Also, the background image data is transferred to the VRAM 23. Furthermore, the timing data is also transferred to the VRAM 23.

FIG. 5 shows a state in which these data are stored.

Each sector is created based on the CDI standard and is composed of, for example, 2352 bytes, and includes a subheader storing a data type and the like and a user data area.

In this figure, a plurality of sectors in a track data area (area as a real-time file) are divided into a plurality of blocks, and timing data TMj is stored in the head sector of each block. Here, the variables (i, j) indicate the screen number and the number of blocks on each screen, respectively. That is, timing data TM1 is stored in the first sector of the first block, and timing data TM2 is stored in the first sector of the second block. Further, sound data and character data are arranged for each block.

The background data and the character data for the first screen are stored before the music starts, that is, in the sectors before the sector in which the first sound data is stored.
Therefore, the sound data is stored in the sector after these sectors, and the sound data is stored at regular intervals (every 4 sectors).
Are arrayed and stored in. The character data includes the blocks (color change blocks) 1, 2, ... Shown in FIG.
Each time, only the color code data is stored. For example, as the character data at the time of color change, the font code data is held in a state of being transferred and stored in the VRAM 23, and only the changed color code data (CLUT) is stored in the sector.

Then, the CPU 21 compares and calculates the timing data (TMj) with the elapsed time from the image display, and changes the character color at a desired timing.

The operation will be described below with reference to the flowcharts shown in FIGS.

FIG. 6 shows an operation procedure of color change in the CPU 21.

First, data is read from each sector in real time (step S601). If it is sound data (YES in step S602), it is transferred to the tone generator 26 (step S603). If not sound data (in step S602
NO), the CPU 21 enters a wait state (step S604).

Then, wait until this wait is released (step
If YES in S605), this routine ends when the song ends (step S606).

 Further, FIG. 7 shows an operation procedure of VDP.

First, the VDP 22 constantly checks whether the CPU 21 is in the wait state (step S701). When the CPU is in the wait state, the read sector is data other than sound data, for example, timing data, so the variable i , j (a counter indicating the screen number and the number of blocks) are both set to 1 (step S702). Then, the timing data TM1, the number E1 of blocks on the first screen, and the color change data are read from the sector into the register of the processor (step S703).

Then, the character block data (character BL1) is transferred to the memory (VRAM23) to create a character plane (step S704). The background data (background BL1) is transferred to another area of the memory (VRAM23) (step S705). The plane for the background image is created.

Then, while instructing the display of characters (step S7
06), and instructs to display the background (step S707).

Then, the timer is started (step S708), and it is checked whether the timer value is the timing data value TMj (step S709). This timing data value TMj is
It is set for each block, for example, the time from displaying characters on the screen to the start of color change, or the time from the end of color change of the previous block to the start of the next block, Alternatively, the time from the end of color change of the immediately preceding dot to the start of color change of the next dot is set.

If the timer value is counted up (YES in step S709), the color of the character block is changed (step S710). Then, it is checked whether or not Ei = j, that is, whether or not color change of all blocks (block 1 to block 8 in FIG. 4) has been completed for one screen (step S711).

If it has not ended, the value of j (counter value) is incremented (step S712), and if it has ended, i
Value (counter value) is incremented (step S7
13). Then, when the value of i (screen number) reaches the final value, this routine is ended (YES in step S714).

If Ei = j is not satisfied, the timer is restarted (NO in step S711 returns to step S708).

The color block color changing subroutine (step S710) is shown in FIG.

First, the variable K representing the number of images is set to 1 (step S8).
01). Then, the color code data Ck of the pixel is transferred from the VRAM 23 to the RGB signal generator 24 (step S80
2). At this time, the color table CLUT is read in the VRAM 23. Here, it is checked whether the color code data Ck is Cb (step S803). If Ck = Cb (step
If YES in S803), the changed color code data Ca is transferred to the RGB signal generator 24 (step S804). This color code data is a code number in the color table CLUT.
Further, Ca is new data after rewriting after the change, and Cb is color code data before the change.

Next, the value of K is incremented (step S805),
When the value of K ends, this routine ends (step S806). Here, K is the number of unit pixels in the character shape.

In the present invention, as an attribute of an image, there is, for example, a character font in addition to such a character color.

<Effect> As described above, according to the present invention, regarding the timing setting of the attribute change of the image, the timing data is collectively held in the memory before the screen display. The change timing can be set only by changing the timing data value. It is easier than setting the attribute of the image, such as the character shape and the color, for each color coloring change timing of the character.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a CDI system according to the present invention, FIG. 2 is a block diagram showing a schematic configuration of an embodiment of a CDI system according to the present invention, and FIG. FIG. 4 is a plan view showing the CDI disk according to the embodiment, FIG. 4 is a data format diagram for explaining a data structure of the CDI disk according to the embodiment, and FIG. 5 is a CDI according to the embodiment.
Data format diagram showing the data layout on the disk,
6 is a flowchart showing a control program in the CPU, FIG. 7 is a flowchart showing a control program in the VDP, FIG. 8 is a flowchart showing a subroutine in the VDP, and FIGS. 9 (A) and 9 (B) are FIG. 10 is a diagram for explaining a conventional CD karaoke, and FIG. 10 is a data format diagram showing a data configuration of a conventional CD karaoke system. 100 …… CDI disk, 200 …… display, 300 …… image display means, 400 …… sound reproduction means, 500 …… memory, 600 …… timing setting means, 700 …… attribute changing means.

Front Page Continuation (56) References JP-A-63-244372 (JP, A) JP-A-63-2094 (JP, A) Actual Kaihei 1-72784 (JP, U) Actual Kaihei 1-72783 (JP , U) Actual Kaihei 1-72782 (JP, U)

Claims (1)

(57) [Claims] 1. A series of sectors set in a user area provided based on the CDI standard is divided into a plurality of blocks, each block holding image data and sound data, and a predetermined position of each block. It has a CDI disk that stores timing data in sectors, and an image display means that displays the image data read from each block in real time on the display, and sound playback that reproduces sound based on the sound data read in real time from each block. Means, a memory that rewritably holds the timing data read from each block in real time, and the time elapsed from the image display on the display with the timing data to set the timing to change the attribute of the image Timing setting means and the image A CDI system characterized by having attribute changing means for changing the sex.