JPH03116474A - Cdi disk for karaoke - Google Patents

Abstract

PURPOSE:To obtain high density data recording in a CDI disk for KARAOKE (orchestration without lyric) music by interleaving several groups each comprising sound data, visual data for background pictures and data for lyrics in a data area. CONSTITUTION:One spiral-type track 2 is designed on the surface of a CDI disk 1 according to CDI standards. The track 2 consists of disk label area A and data area B according to CDI standards, and the data area B has plural numbers of sectors (blocks). Each sector in the data area B discretely contains sound data and two types of visual data and plural data groups are interleaved in this area. By this method, the data area B can be efficiently used to realize high density recording.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a CDI disc for karaoke, and more particularly to a data structure of a CDI disc for karaoke, which has sound information for songs, background images, and visual information for lyrics.

<Conventional technology> CDI (Compact Disc Ink Active) is a C
In addition to audio information, images, data, characters, etc. are recorded on D.

The CDI standard for storing sound information (acoustic information) and visual information (video information) on the same compact disc (CD) has already been proposed by Philips Corporation. Based on this CDI standard, CD
Development efforts are being made by various companies to put the I-disk into practical use. In this case, according to the CDI standard, the nature of user data can be specified for each sector.

For example, one sector can be used as sound information, and the other sectors can be used as visual information. Note that the sound information is output by the audio processor as audio output through a speaker, and the visual information is displayed by the video processor as video output on a CRT or the like.

According to the data arrangement on a CDI disc based on this CDI standard, sound information is arranged in tracks according to one of three levels (levels A, B, and C) depending on the desired sound quality.

In level A (stereo mode), as shown in FIG. 6(A), sound information Sl is arranged in every other sector in a plurality of sectors in the data area of a track. That is, sound information is arranged in the first channel of the track. Visual information, etc. can be placed in other empty sectors. This level A is a high-fidelity level, for example, a level at which a sound quality equivalent to that of an LP record can be obtained.

Note that the arrow in the figure indicates the data read direction on the track.

At level B (stereo mode), the sound information S2 is arranged every four sectors, as shown in FIG. Therefore, sound information is arranged in one of the four channels, and visual information etc. are arranged in the other channel. This level B is a mid-hi-fi level and is intended to obtain sound quality equivalent to FM broadcasting.

At level C (stereo mode), the sound information S3 is arranged every eight sectors, as shown in FIG. The track is divided into eight channels, but only one channel is used for sound information and the remaining channel is used for visual information. Level C is a speech level, and provides a sound quality equivalent to, for example, AM broadcasting.

Note that the number of channels in monophonic mode is twice that in stereo mode, regardless of the level.

Karaoke is an area where this CDI is applied. In this karaoke, the songs serve as sound information, and the background images and lyrics serve as visual information.
They will be allocated respectively.

<Problems to be Solved by the Invention> However, in the case of a CDI disc for karaoke in which two types of visual information are allocated to sectors in addition to sound information based on the CDI standard, the sound The sectors used for information become scattered, and for example, at B level, even if visual information is placed between sound information, two or one channel (sector) out of four channels will remain empty and will not be used. , there was a problem of poor sector usage efficiency. Particularly in karaoke, background images and lyrics are assigned based on the progress of a song, so for a karaoke CDI disc, it is important to assign this information to sectors.

Therefore, the present invention aims to achieve high density in the data arrangement of a CDI disc for karaoke by interleaving a plurality of information groups consisting of musical tone information, background image information, and lyrics information in a data area. The purpose is

<Means for Solving the Problems> The CDI disc for karaoke according to the present invention has a disc label area and a data area on the track based on the CDI standard, and this data area is configured by a plurality of sectors. , in a CDI disc for karaoke, in which a file table is assigned to the disc label area, and sound information used to form musical tones, and visual information used as a background image and lyrics display are assigned to the data area, The sound information is discretely allocated to predetermined sectors in the data area according to the sound level based on the CDI standard, and the visual information linked to the sound information is first visual information that displays a background image. , second visual information displaying lyrics associated with the background image;
By assigning these first and second visual information to the same identification numbers as the sound information and assigning them to the remaining predetermined sectors, the sound information and the first and second visual information are combined into one set. This is a CDI disc for karaoke, which constitutes an information group and has a plurality of information groups interleaved within this data area.

Effect> In the karaoke CDI disc according to the present invention, sound information (
musical tone formation information) and first and second visual information (background image formation information and lyrics formation information). The same identification number is assigned to the sound information and visual information that constitute the - set of information groups. Furthermore, a plurality of information groups are interleaved within this data area. Therefore, the data area of the karaoke CDI disc can be used efficiently, making it possible to record data at high density.

Furthermore, during scanning in a CDI player, the sound information and the first and second visual information of one set of information groups are sequentially read out as a set based on this identification number (for example, channel number). .

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

1 to 5 illustrate an embodiment of a CDI disc for karaoke according to the present invention.

In FIG. 1, 1 is a CDI disk.

A single spiral track 2 is designed on the surface of this CDI disk 1 based on the CDI standard. That is, a plurality of pits are arranged in a spiral shape as one track. Therefore, this C
Data is recorded on the DI disk 1 in a clockwise spiral (depending on the presence or absence of pits) from the inside in the radial direction to the outside.

This track 2 is scanned by the CDI player. A CDI player with a well-known configuration is used, and in addition to a system controller, an audio processor, and a video processor, for example, a 68000 series CPU is used due to the need for real-time processing.

In track 2, a disc label area A and a data area B are defined based on the CDI standard. Further, this data area B is composed of a plurality of sectors (blocks).

Above disc label area (file table area)
It is composed of AE, file table, etc.

For example, the start addresses of multiple files (information groups) are recorded.

As shown in FIG. 2, the total amount of data that can be recorded in one sector is 2352 bytes. The nature of user information can be specified for each sector. For example, there is a distinction between sound (audio) information, visual (video) information, etc.

Also, according to the CDI standard, the structure of this 2352-byte data is (when handling sound information as Form 2), 12 bytes for sync, 4 bytes for header, 8 bytes for subheader, 2304 bytes for user data, and 20 spares.
Bytes, 4 bytes reserved.

A signal for dividing sectors is recorded in the sink.

Address information and form information are recorded in the header.

Furthermore, the subheader consists of 2 bytes for file, 2 bytes for channel, 2 bytes for submode, and 2 bytes for data type.

A file number is recorded in this file portion, and a channel number is recorded in the channel portion. In addition, the sub-mode section records the distinction between sound data and visual data, and the data type section records the type of coding, etc. if the data is sound data.

FIG. 3 shows an example in which two information groups (files) each consisting of sound information and first and second visual information are arranged in track 2 in the B-level stereo mode according to the CDI standard.

In this level and mode, a plurality of sectors on track 2 are divided into four channels and are sequentially scanned in the direction of the arrow in the figure.

Each sector of the first channel represented by sector numbers 1, 5, 9, . .513, S14,...
S1m are arranged sequentially (regularly). In addition, each sector of the fourth channel represented by sector numbers 4, 8, 12, etc. contains musical tone forming signals S41, S42, S
43, S44, . . . S4m are arranged in sequence. The reason why the sound information is regularly arranged only in these two channels is that these sound information needs to be read out regularly at regular intervals in order to form 10 pieces of music as signals for forming musical tones.

Also, sector number 2.3.6.7.10.11.14.
15.18,... (Channel 2 and Channel 3)
Each sector contains the first group of visual information VI
A, VIB, VIA, VIB, ease and the second group of visual information V4A, VIB, V
4A, VIB, . . . are arranged in a mixed manner.

In this case, the first visual information VIA is, for example, image information that becomes a background image for one song Sl, and the second visual information VIB is text information that becomes lyrics for that song Sl. In this way, the same channel number is assigned to the visual information VIA and VIB related to the sound information S1.

This channel number 1 is recorded in the subheader portion of each sector.

Regarding the second group of songs S2, the first visual information V4A is information for forming a background image, and the second visual information V4B is information for forming lyrics thereof.

Furthermore, as shown in FIG. 3, two groups of visual information were densely mixed in each sector of channels 2 and 3, thereby achieving high data density. The reason why they are mixed in this manner is that sound information and visual information do not necessarily have a one-to-one correspondence relationship. This is also because the amount of information varies depending on the song.

For example, 30 screens of visual information of the background image foil 1 are required for the song S1, while 40 screens of information are required for the song S2.

Therefore, the CDI disc 1 is set by the CDI player.
If the first information group (for example, the first song) is selected when scanning track 2 of The first visual information (natural picture) is sent to the audio processor in turn.
VIA, ... and second visual information (text)
ViB, . . . are sent to the video processor.

As a result, the music, background image, and lyrics can be obtained as one unit. At this time, the information S4 of the second group
1, see, and V4A, VIB-- are skipped and scanned.

FIG. 4 shows another example in which visual information VA and VB are arranged in each sector in correspondence with the B level of sound information S of the CDI standard.

In this example, channels 1 and 3 are used for sound information SL S3, and channels 2 and 4 are used for visual information VIAX ViB, V4A, and V4B, respectively.

In the arrangement of visual information using this channel 2, visual information VIA for the background image of the first song, visual information VIB for its lyrics, etc., and sound information Sit, S12, etc. for forming the musical tone of the song, etc.・They are arranged in each sector 2.6.14.18, . . . in accordance with the progress of . Also, each sector 8.12 of channel 4.
16,... is the visual information V3 of the second group.
A, V3B, etc. are arranged.

By distinguishing and arranging the sound information and the related first and second visual information for each adjacent sector, that is, for each adjacent channel, it is possible to combine the sound information and visual information of multiple groups. Even when arranging data, the interleaving of the first group and the interleaving of the second group are performed separately.
Can be done independently. As a result, the task of incorporating a program for the data array becomes extremely easy.

As shown in FIG. 5, this becomes easier as the number of groups increases and the third group and fourth group are arranged in eight channels at the C level.

Figure 5 shows four songs interleaved.

The visual information VA for forming a background image and the visual information VB for forming lyrics are the sound information S for forming musical sounds of the song.
The same channel numbers 1.3.5.7 are given.

When one group of visual information is arranged for each channel in this way, the data can be easily created by interleaving a plurality of groups. For example, creating image data for the first song, and
Creation of image data for the music can be performed in parallel.

<Effects> As explained above, according to the present invention, the data area of a karaoke CDI disc can be used efficiently, and the data area of a karaoke CDI disc can be used efficiently, and the data area can be efficiently used to store sound information for forming musical tones, visual information for forming background images, and visual information for forming lyrics. This enables high-density recording.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the track structure of an embodiment of a CDI disc according to the present invention, and FIG. 2 is a CDI disc according to an embodiment of the present invention.
A data format diagram showing one sector for explaining the data structure of DI, FIG. 3 is a diagram showing the data arrangement for each sector according to one embodiment, and FIG. 4 is a diagram showing the data arrangement for each sector according to another example. The data array diagram, Figure 5, is a diagram showing the data array for each sector according to another example, and Figures 6 (A) and (B).
), <C> is a data layout diagram showing the arrangement of sound information at each level according to the CDI standard. 1...CDI disk, 2...
····truck.

Claims (1)

[Claims] Based on the CDI standard, a track has a disc label area and a data area, and this data area is composed of a plurality of sectors.A file table is assigned to the disc label area, and musical tones are stored in the data area. the sound information used to form the
In a karaoke CDI disc to which a background image and visual information used as lyrics display are allocated, the sound information is discretely allocated to predetermined sectors in the data area according to the sound level based on the CDI standard. , the visual information linked to this sound information includes first visual information that displays a background image and second visual information that displays lyrics related to the background image, and these first and second visual information By assigning the visual information to the same identification number as the sound information and allocating it to the remaining predetermined sectors, the sound information and the first and second visual information constitute a set of information groups, and A CDI disc for karaoke, characterized in that a plurality of information groups are interleaved within the data area.