JPH03163797A - Compact disk playback device - Google Patents

Abstract

PURPOSE:To obtain an illumination effect synchronous with a voice output by activating the playback of the illumination information of the other channel in coincidence with the voice played back by the voice information of one channel via the specific code contained in the control code of a compact disk. CONSTITUTION:When '1000' indicating the four-channel audio signal with low possibility to be used is set for the control bits of the channel Q in the sub- coding stored for each frame as one of control codes in a CD1, the monophonic voice information is stored in the region where the voice information of the right channel in the frame is stored, and the illumination information is stored in the region where the voice information of the left channel is stored by the bit method for the information read out after this signal. When the control bits of the read information are '1000', the playback signal of the left channel of a data processing unit 20 is outputted to an illumination output device 50, and the playback signal of the right channel is outputted to a voice output section 40.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a compact disc playback device, and more particularly to a compact disc playback device that interprets a portion of information stored on a compact disc as illumination information. Regarding.

[Prior Art] Conventionally, a compact disc playback device (hereinafter referred to as a CD) reads out information stored in the form of pit rows on one side of a compact disc (hereinafter referred to as a CD) using a laser beam, and reads the information through various signal processing circuits. is playing audio. CD
The information stored on the CD (consisting of friend audio information and control codes indicating frame numbers, performance time elapsed, etc.) is recorded on one track spirally connected from the inner circumference to the outer circumference of the CD. Then, according to this control code, audio information is extracted and reproduced as audio.

The sound quality played by such compact disc playback devices is extremely excellent, but in order to enjoy music even more fully, there is a need to change the atmosphere of the room to match the music, that is, to create an optimal music space. There is a growing demand to create

One way to do this is to create a lighting effect in the room. That is, the atmosphere of the room is changed by changing the color, illuminance, etc. of lighting equipment that produces lighting effects to match the image of the music. These lighting effects were artificially changed each time to match the song.

[Problems to be Solved by the Invention] However, it is extremely time-consuming to take the trouble to change the lighting effects in accordance with the music. Therefore, when attempting to store control data (hereinafter referred to as lighting information) for lighting equipment that produces lighting effects on a compact disc, the following problems occur. That is, when audio information and lighting information are stored on the same CD, the audio information is read out and played back sequentially, so it is not possible to control the lighting equipment in synchronization with this. Another problem is that it becomes incompatible with conventional CDs.

The compact disc playback device of the present invention solves the above problems and aims to produce lighting effects in sync with music.

The structure of the present invention that achieves the above object will be described below.

[Means for Solving the Problems] The compact disc playback device (company) of the present invention, as illustrated in FIG. , in a compact disc playback device comprising an audio reproduction means M2 that reproduces audio according to the read audio information and the read control code, the read control code includes a predetermined specific code. a specific code determining means M3 for determining whether the specific code is included; and when it is determined that the specific code is included, interprets the audio information as lighting information such as right or left channel information, blinking, illuminance, color, etc., and switching means M4 for switching audio reproduction to lighting equipment control based on the information of
and a lighting drive means M5 that drives and controls the lighting equipment based on the lighting information.

[Function] The compact disc playback device 1 of the present invention having the above configuration reads the control code and audio information stored on the compact disc CD by the signal reading means M1, and reproduces the audio information according to the control code by the audio playback unit M2. However, when the specific code determination means M3 determines that the control code includes a predetermined specific code, the switching means M4 interprets the information of the right or left channel of the audio information as lighting information and switches the information to the right or left channel. The audio playback based on is switched to lighting device control, and the lighting device is driven and controlled by the lighting driving means M5. Therefore, when a specific code is included in the control code, the lighting equipment is driven and controlled by the lighting information of the other channel in accordance with the sound reproduced by the audio information of one channel.

[Embodiments] In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the compact disc playback device of the present invention will be described below.

FIG. 2 is a schematic configuration diagram of a compact disc playback device as an embodiment of the above. Compact disc player (
Hereinafter referred to as CD playback device) (Yo Compact Disc (
(hereinafter referred to as CD) 1 and controls the rotation of 1, CDI
an optical processing section 10 that detects a signal of information stored as pits (not shown) in the optical processing section 10; a data processing section 20 that shapes the signal from the optical processing section 10 and performs digital signal processing;
A system controller 3O connects the optical processing section 10 and the data processing section 20 and controls the entire system; an audio output section 40 performs audio reproduction based on the output signal from the data processing section 20; The illumination output section 50 outputs illumination based on the output signal of the illumination output section 50.

Optical processing unit 101i A spindle motor 12 that rotates the CD 1 mounted on the turntable 11 together with the turntable 11, and a CLV (CLV) that controls the spindle motor 12 to keep the rotation of the CD 1 at a constant linear velocity.
(instant Linear Velocity)
a servo circuit 13; an optical pickup 14 that is disposed opposite to the information recording surface of the CDI and detects information stored on the CD 1 in a non-contact manner using a laser beam and outputs a received light signal to the data processing section 20; It consists of a servo circuit 15 that controls the position of the optical pickup 14.

Servo circuit 151 table Based on control signals from the system controller 30 and data processing unit 20, move the optical pickup 14 up and down so as to keep the distance between the lens (not shown) of the optical pickup 14 and the surface of the CD 1 constant. A tracking servo 15b that causes the optical pickup 14 to follow the track relative to the eccentricity of the CD 1, and a traverse servo 15c that moves the optical pickup 14 in the radial direction of the CDI.

Data processing section 20 [i] A head amplifier 21 which amplifies the light reception signal from the optical pickup 14, detects error signals of focus and tracking signals, and outputs them to the servo circuit 15, and clocks the signal from the head amplifier 21. PLL (Phase Locked L)
oop) circuit 22 and is connected to the PLL circuit 22.
A playback signal processing circuit 23 performs deinterleaving, error detection/correction, etc. and outputs digital playback signals for both left and right channels, and a playback signal output from the playback signal processing circuit 23 according to a playback signal output switching process performed by a system controller 30, which will be described later. It consists of a switching circuit 24 that outputs to an audio output section 40 and a lighting output section 50.

System controller 30 {Friendly known CPU31, RO
The M32 and RAM 33 constitute an arithmetic and logic operation circuit, and also includes an input/output port 34 that connects the servo circuit 15 and CLV servo circuit 13 of the optical processing section 10 and the data processing circuit 20 to exchange information. Upper bus 3
5 are interconnected. Furthermore, an operation section 36 and a display section 37 using a liquid crystal display are connected to this input/output port 34.

Audio output section 401 D/A converter 41 that converts the digital signal from the data processing section 20 into an analog signal
, an LPF @ path 42 that removes clock components and unnecessary Takagi frequency components from the converted analog signal, and an audio amplifier 43 that drives left and right speakers 44L and 44R.
It consists of.

The lighting output unit 50 outputs the lighting equipment 51 based on a plurality of lighting equipment 51 equipped with light emitters corresponding to predetermined types of colors and a reproduction signal (digital signal) from the data processing unit 20. Each of them is composed of a drive circuit 52 that independently blinks the illuminance, color, etc. so as to be changeable.

Next, the CDI used in the IQCD playback device will be explained. CDI+-& The CDI+-& may be a conventionally used one exclusively for music, or one that also stores lighting information described below.

This CDI can be used as one of the control codes for Q channel control bit data (4 bits indicating the number of audio channels and the presence or absence of emphasis) in the subcoding that is stored for each frame. “” indicates a 4-channel audio signal with low quality.
1000J or rlooIJ (hereinafter referred to as rlo
00J) is set. When this signal rlooOJ is set, the area 1 in which the audio information of the right channel or left channel (hereinafter described as the right channel) in the other frame is stored is the information read out after that signal. In the area where the left channel audio information is stored, the lighting information is stored in a pit format.

This lighting information is transmitted to a plurality of lighting devices 51 of the lighting output unit 50.
It independently specifies lighting effects such as flashing illuminance and color, and is formatted in the same format as audio information. Note that the amount of lighting information is extremely small compared to audio information, and there is no need to instruct the lighting output unit 50 to change the lighting effect at high speed. , Frame 1 to which lighting information is added has an extremely low percentage of all frames.

The lighting effects in the lighting information are set according to the song. For example, in f-hard rock,
It blinks repeatedly and changes colors rapidly. In addition, soft colors are set in the gentle mood music.

Next, the reproduction signal output switching process performed by the system controller 30 will be explained. FIG. 3 is a flowchart showing a reproduction signal output switching routine.

First, information stored in the CDI is read from the data processing unit 20 (step 100), and it is determined from the read information whether the control bit of the Q channel of subcoding is rlooOJ (step 110).

When it is determined that rYESJ (, t. The left channel reproduction signal of the data processing section 20 is output to the illumination output device 50, and 1:. The right channel reproduction signal is output to the audio output section 40 (step 120). That is, it is determined that the information in the read frame stores not only audio information but also lighting information, and outputs a reproduction signal of the lighting information stored in the left channel storage area to the lighting output section 50. Then, the monaural audio reproduction signal stored in the right channel storage area is output to both the left and right channels of the audio output section 40.Therefore, monaural reproduction is performed from the audio output section 40, and the lighting equipment of the lighting output section 50 is output. 51 lights up.

lighting of this lighting device 51]. t, blinking color, illuminance, etc. are controlled according to lighting information.

In step 110, if it is determined as "No", the reproduction signals of both the left and right channels of the data processing section 20 are output as they are to the audio output section 40, and are not output to the illumination output section 50 (step 130). . That is, it determines that the information in the read frame is two-channel audio information without lighting information, and outputs reproduction signals of both left and right channels to the audio output section 40 side. Therefore, two-channel stereo reproduction is performed from the audio output section 40, and no change in the lighting effect is performed to the lighting output section 50.

After performing the process of step 120 or step 130, this routine is temporarily ended. In addition, this routine is
This is repeated every time the sub-coding is read out, that is, every frame is changed.

Figure 4 shows a portable CD player using a CD playback device. 4A is a perspective view showing the front of the portable CD player 60, and FIG. 2B is a perspective view showing the back. After inserting the CD 1e into the CD insertion slot 61 and performing a predetermined operation using the operation switch 62, the left and right speakers 63.
Audio is output from 64. At this time, when the information in the frame in which the sub-coding control bit of [CD] is set to "1000" is read, the portable CD
Based on the lighting information stored in the left channel, lighting outputs synchronized with the audio output (monaural playback) are output from the lighting devices 65, 66, 67, and 68 provided two each on the top and back surfaces of the D player 60. It will be done. These lighting devices 65 to 68 (equipped with light emitters corresponding to predetermined types of colors, each of which blinks, colors, and illuminance are controlled independently. Also, color 1 in the lighting information;
It is possible to change the color in advance by operating the operating section switch 62, and for example, for the color specified by ['L illumination information, it can be set to a desired color such as red, yellow, yellow, and red. This operation (, t. display 6
Check the color name displayed in 9 and proceed.

Compact disc playback device 1i of this embodiment explained above
(,t, In a frame where the CDI subcoding control bit is set to rl000J, the left channel information is interpreted as lighting information, and based on that lighting information, lighting effects are synchronized with the audio output (monaural playback). Furthermore, since the ratio of frames in which lighting information is stored to all frames is extremely low, it is almost the same as stereo playback, and the effect on sound quality is extremely small.Therefore, the sound quality is impaired. It is possible to obtain lighting effects that are suitable for the music, creating a music space full of immersion.In addition,
If you use a conventional CD1 that does not have lighting information (t.), it is compatible, so it will not affect the sound quality and can be played in stereo. rl control bit
Since it is only necessary to set ooOJ, the number of manufacturing steps is no different from that of the conventional method.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments.
．． The configuration may be such that switching is performed using part of another control code instead of the control bits, and it goes without saying that the present invention can be implemented in various ways without departing from the gist of the present invention.

Further, the present invention may be used in a configuration for controlling stage lighting equipment in accordance with music for theatrical performances, a configuration used in a karaoke playback device, or the like. In this case, there is no need for complicated lighting operations by a friend, and moreover, accurate and detailed lighting effects are possible.

As described in detail above, when the compact disc playback apparatus of the present invention determines that the control code of the 1'L compact disc includes a specific code, the sound reproduced based on the audio information of one channel is At the same time, the lighting equipment is controlled to be able to change its blinking color, etc. based on lighting information from other channels. Therefore, a lighting effect synchronized with the audio output can be obtained, and a music space full of realism can be created, which is an excellent effect. Furthermore, when using a conventional compact disc that does not have lighting information, it is compatible with other discs, so it can be played in stereo without affecting its sound quality in any way.

For example, if stage lighting equipment for theatrical performances is controlled in accordance with the music, there is no need for any manual operation, and moreover, accurate and detailed lighting effects are possible.

Incidentally, since the specific code is simply included in the control code on the compact disc 1 storing the lighting information, the number of manufacturing steps is no different from the conventional one.

[Brief explanation of the drawing]

Figure 1 is a block diagram illustrating the basic configuration of the present invention, Figure 2 is a schematic configuration diagram of a compact disc playback device, and Figure 3 is a block diagram illustrating the basic configuration of the present invention.
The figure is a flowchart showing the playback signal output switching routine.
FIG. 4 is a perspective view of the portable CD player. 1... Compact disc (CO) 10... Optical processing section 20... Data processing section 30... System controller

Claims (1)

[Claims] 1. Signal reading means for optically reading control codes and audio information stored on a compact disc, and audio playback for reproducing the read audio information as audio according to the read control code. a specific code determining means for determining whether or not a predetermined specific code is included in the read control code; a switching means for interpreting the right or left channel information of the audio information as lighting information such as blinking, illuminance, color, etc., and switching the audio playback to lighting equipment control based on the information of the channel; 1. A compact disc playback device comprising: lighting drive means for driving and controlling lighting equipment.