JPH08123451A - Disk reproducing device - Google Patents

Abstract

PURPOSE: To provide the disk reproducing device which saves the user's trouble to select and is improved in operability by deciding a KARAOKE disk which has only an accompaniment and only the singing of a model singer recorded on the right and left channels respectively. CONSTITUTION: The disk 1a is rotated by a disk rotating means 1, and information read out by a digital information read means 2 is converted by a converting and reproducing means 3 into analog signals of the right and left channels, which are detected by detecting means 4L and 4R; and a comparing means 5 compares the start timing points of the analog signals with each other. When a KARAOKE mode is inputted by a selecting means 8 in advance, a control means 9 indicates an L-only mode when the set disk is a sound multiplex system disk or a stereophonic mode when the disk is a stereophonic disk to an L/R switching means 6 and when the stereophonic mode is indicated, a vocal band reducing means 7 is placed in operation to output an accompaniment signal which is lowered in vocal band, so that the display is displayed by a display means 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus for reading voice information from a compact disc in which voice information is digitally recorded, converting it into an analog signal and reproducing it.
More specifically, the present invention relates to a disc reproducing apparatus suitable for reproducing karaoke software.

[0002]

2. Description of the Related Art In recent years, a storage medium called a compact disc in which audio information is digitally recorded has become widespread. Some of the compact discs are called karaoke software for enjoying karaoke. In addition, in addition to audio information in the stored information, there is also video information, and the lyrics in the video information are stored. There are also so-called CD graphics and video CDs where you can enjoy karaoke while watching.

In the karaoke software, an audio multiplex system in which only the accompaniment is recorded in the left channel, and only the singing voice of the model singer or the accompaniment and the singing voice of the model singer are recorded in the right channel,
There is a stereo system in which only the accompaniment is recorded in stereo for both the left and right channels. Ordinary music software that is not karaoke software, such as accompaniment and singing voice of the singer, is recorded in stereo on the left channel and the right channel on the mini-mini component system and karaoke device, but the vocal band is reduced and the singer's voice is reduced. Some have a voice mute function to reduce and enjoy karaoke as an accompaniment, and users can also enjoy karaoke with normal music software using it.

[0004]

However, in order to enjoy karaoke with the disc reproducing apparatus including the conventional mini-mini component system and karaoke apparatus as described above, first, the compact disc set by the user in the disc reproducing apparatus is a voice multiplexing type karaoke system. After recognizing whether it is software, stereo type karaoke software, or normal music software, if the audio multiplex type karaoke software outputs left and right audio signals of the left channel of the disc ( A mode for outputting accompaniment) (hereinafter, referred to as L-only mode) is selected, and the stereo system karaoke software outputs the left and right as it is (hereinafter, referred to as through mode). In the case of normal music software, the voice mute mode is selected. That you have to choose I had a problem point.

The present invention is intended to solve the above-mentioned problems of the prior art. Among the voice multiplexing karaoke software, a disc in which only the accompaniment is recorded in the left channel and only the singing voice of the model singer is recorded in the right channel is provided. The purpose of the present invention is to provide a means that can be easily operated by the user by discriminating and reducing the kinds of selections to be imposed on the user.

[0006]

In order to achieve the above object, the disk reproducing apparatus of the present invention is a disk rotating apparatus for rotating a disk which is a storage medium in order to read information from a storage medium in which sound is digitally recorded. Means, digital information reading means for reading information recorded on the recording medium, conversion reproducing means for converting the information read by the digital information reading means into two analog signals of a left channel and a right channel, and reproducing the converted information. Detecting means for detecting the analog signal reproduced by the means for each channel, comparing means for comparing the start timing of the analog signal detected by the detecting means between the left channel and the right channel, the left channel input terminal and the right channel It has a channel input terminal, a left channel output terminal and a right channel output terminal The L / R switching means that can freely change and switch the combination to the output, the vocal reduction means that can reduce the vocal band when the input analog signal is stereo, and the user's selection operation are input. For controlling the operation of the disc rotating means and the reading means, and L by the comparison information given from the comparing means and the instruction from the selecting means.
A control means for controlling the / R switching means and the vocal band reduction means is provided, and if necessary, a display means for displaying the recording mode of the disc set by the control of the control means is provided.

[0007]

According to the present invention, with the above-mentioned structure, after the disc is set in the disc reproducing apparatus and the TOC information of the disc is read, the audio signal for a few seconds at the beginning of one song to be reproduced or all the recorded songs is reproduced. By detecting the output of the converting and reproducing means by the detecting means and comparing the start timing of the left channel and the right channel by the comparing means, it is possible to know which type of disc is set in the disc reproducing device by the judgment of the control means. If the karaoke state is set by the selection means, the audio multiplex disc outputs the left channel input from both output terminals, and if it is a stereo disc, each input is output to each output and the vocal signal is reduced to the output signal. Acts to operate the means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus according to an embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a disc reproducing apparatus according to an embodiment of the present invention. In the figure, digital audio information is read from the disc 1a rotated by the rotating means 1 by the digital information reading means 2 using the optical pickup 2a. The read digital information is converted and reproduced by the conversion reproduction means 3 into analog signals of the left channel (L) and the right channel (R). The reproduced analog signals of the left and right channels are detected by the detection means 4L and 4R, respectively, and compared with each other.
Output to. The comparison means 5 compares the timing at which the detected analog signal starts between the left channel and the right channel.

The L / R switching means 6 has a left channel input terminal and a right channel input terminal, a left channel output terminal and a right channel output terminal, and outputs the left channel and right channel analog signals from the conversion reproducing means 3. When input and instructed, the left and right output terminals 6L and 6R output the left channel input to both, output the right channel input to both, or output the left channel and the right channel respectively. , You can output by reversing the input and output channels. That is, the combination of input to output can be freely changed and switched. In this embodiment, at least in the L-only mode, the left channel input can be switched to the left / right channel output, and in the through mode, the left channel input can be switched to the left channel output and the right channel input can be switched to the right channel output. The output of the L / R switching means 6 is output to the output terminals 7L and 7R via the vocal reduction means 7 capable of reducing the vocal band if the input analog signal is stereo.

The user's selection operation is selected by the selection means 8 and transmitted to the control means 9. The control means 9 controls the operation of the disk rotating means 1, the operation of the digital information reading means 2, and the L / R switching means 6 and vocals according to the comparison information given from the comparing means 5 and the instruction from the selecting means 8. It is a control unit that controls the band reduction unit 7 and the display unit 10. The display means 10 displays whether the disk 1a set by the information from the control means 9 is the audio multiplex system or the stereo system.

The operation of the first embodiment of the disc reproducing apparatus constructed as above will be described below. First, when the disc 1a is set in the disc reproducing device, the disc rotating means 1 rotates the disc 1a in response to a command from the control means 9, and the digital information reading means 2 records the music number information and the like of the disc 1a on the TOC (Table
of Contents) Read information. The conventional disc reproducing apparatus stops the disc rotation once and waits for a reproducing instruction from the user, but in the present embodiment, the first several seconds of all recorded songs are sequentially reproduced. The reproduced analog signal is detected by the detection means 4, and the start timing of the analog signal is compared by the comparison means 5. as a result,
If most of all the recorded songs start earlier on the left channel, it is judged that the disc is an audio multiplex system with only the accompaniment on the left channel and only the singing voice of the model singer on the right channel. If not, it is determined to be the stereo system. The control means 9 gives an instruction to the display means 10 as a result of this judgment, and the display means 10 displays "voice multiplex" or "stereo" to inform the user of the disc type. This display may be displayed in characters on a liquid crystal display, a character display tube, or the like, or may be an LED or the like turned on.

As described above, according to the present embodiment, when the user sets the disc, whether the set disc is the audio multiplex system in which the left channel records only the accompaniment and the right channel records only the singing voice of the model singer, It is possible to know whether it is another disc including stereo system karaoke software or normal music software.

In the above description, it was explained that the first few seconds of all the recorded songs are played back sequentially, but there is a case where only one song on the disc needs to be sung. Depending on the setting, the output of both channels for the first few seconds of only one music is reproduced by the conversion reproduction means 3, detected by the detection means 4, compared by the comparison means 5 and judged by the control means 9 to the beginning of the music. It can be set to return and wait.

Next, the operation of the second embodiment of the present invention will be described. If the user selects the karaoke mode with the selecting means 8 and inputs it to the controlling means 9 in advance, when the controlling means 9 is judged as the audio multiplex disc by the comparison output of the comparing means 5 in the first embodiment, The control means 9 instructs the L / R switching means 6 to be in the L-only mode, and only the accompaniment is output to both the left and right outputs 7L and 7R. When it is judged as normal music software, the stereo system is adopted, so the control means 9 gives an instruction to the vocal band reduction means 7, the vocal band reduction means enters the voice mute mode, and the left and right output terminals 7L, 7R.
Outputs a stereo signal with a reduced vocal band. In the case of stereo type karaoke software, since the singing voice is not recorded in the software, the user can cancel the karaoke mode and enjoy karaoke. However, among the karaoke software of the voice multiplex system, when both the accompaniment and the singing voice of the model singer are recorded in the right channel, it may not be judged as the voice multiplex system. If you select L-only mode, you can enjoy karaoke.

As described above, according to the second embodiment, the voice multiplexing karaoke software in which the left channel only has accompaniment and the right channel records the singing voice of the model singer, or normal music software is used. If you do
In the karaoke mode, the user can enjoy karaoke simply by issuing a playback instruction without worrying about the type of disc that is set. As described above, according to the present embodiment, it is possible to provide the convenience that the user can operate without paying too much attention to the contents of the medium.

In the above embodiment, it is natural that the L / R switching means can be used even if the accompaniment of the karaoke software and the model singing are left and right switched, and even if the source is not necessarily a digital source, audio tape, video tape, etc. It goes without saying that this technology can be applied even to analog input.

[0017]

As described above, in the disc reproducing apparatus of the present invention, the detecting means for detecting the analog signal reproduced by the converting and reproducing means for each channel and the timing at which the analog signal detected by the detecting means starts are left. A comparison means for comparing the channel and the right channel, and a left and right channel input terminal and a left and right channel output terminal are provided, and the combination from input to output can be freely changed and switched.
/ R switching means, vocal reduction means capable of reducing the vocal band when the input analog signal is stereo, selection means for inputting a user's selection operation, and comparison information provided from the comparison means. And a control means for controlling the L / R switching means and the vocal band reduction means in accordance with an instruction from the selection means, so that the disk should be set in the disk reproducing apparatus and the TOC information of the disk should be read and then reproduced. By discriminating the audio signal for a few seconds at the beginning of one song or all songs recorded on the disc and comparing the start timings of the left and right channels, it is possible to determine which type of disc is set in the disc playback device. , Operation convenience that you can use it without worrying about the contents of the medium if you specify that it is for karaoke It is possible to provide a.

[Brief description of drawings]

FIG. 1 is a block diagram of a disc reproducing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 Disc Rotating Means 1a Disc 2 Digital Information Reading Means 3 Conversion Reproducing Means 4 Detecting Means 5 Comparing Means 6 L / R Switching Means 7 Vocal Bandwidth Reducing Means 8 Selection Means 9 Control Means 10 Display Means

Claims (2)

[Claims] 1. A disk rotating means for rotating a disk, which is a storage medium, for reading information from a storage medium in which voice is digitally recorded, digital information reading means for reading recorded information of the recording medium, and the digital. Conversion reproducing means for converting the information read by the information reading means into two analog signals of a left channel and a right channel and reproducing; a detecting means for detecting the analog signal reproduced by the converting and reproducing means for each channel; Comparing means for comparing the timing at which the analog signal detected by the means starts between the left channel and the right channel, and having a left channel input terminal and a right channel input terminal, a left channel output terminal and a right channel output terminal. L that can be switched by freely changing the combination to the output
/ R switching means, a vocal reduction means capable of reducing the vocal band when the input analog signal is stereo, a selection means for inputting a user's selection operation, the disk rotation means and the read-out. A disc reproducing apparatus comprising: control means for controlling the operation of the means, and control means for controlling the L / R switching means and the vocal band reducing means according to the comparison information given from the comparing means and the instruction from the selecting means. 2. The disc reproducing apparatus according to claim 1, further comprising display means for displaying the recording method of the disc set under the control of the control means.