JPH0765558A - Audio playback system - Google Patents

Abstract

(57) [Summary] [Purpose] To enable good display of song titles and the like in audio playback systems such as karaoke playback devices. A playback means 12 for playing back audio data from a recording medium 11 in which a plurality of units of audio data are recorded with individual numbers assigned thereto, and a control for controlling an individual number of audio data played back by the playing means 12. It is provided with means 21 and storage means 42, 43 for storing the song name data for each individual number, and the song name data for each individual number recorded on the recording medium 11 is reproduced by the reproducing means under the control of the control means 21. When the control means 21 is instructed to reproduce the data so that it can be stored in the storage means 42, 43, and when the control means 21 is instructed to reproduce, the song name data of the corresponding number stored in the storage means 42, 43 is read out. The song title is displayed based on the read song title data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio reproducing system suitable for application to a karaoke reproducing apparatus using a digital data recording disk called CD (compact disk).

[0002]

2. Description of the Related Art Conventionally, a karaoke reproducing apparatus (that is, an accompaniment sound of a song is reproduced and a sound input from a microphone is mixed by using a compact digital data recording disk having a diameter of about 12 cm, which is called a CD (compact disk). Various devices are being developed. In this case, in the case of what is usually called a CD, only a maximum of about 74 minutes of audio data is recorded as main digital data on one disc, but in a karaoke reproducing device, images such as lyrics are reproduced. It is more convenient to display it according to the voice. Therefore, the CD used for karaoke
In some cases, there is an additional recording area called a subcode in which video data of a still image for displaying lyrics is recorded.

On the other hand, since a moving image can display a more complicated image than a still image, a video recording disc using a relatively large disc (for example, a diameter of about 30 cm) called a video disc was used. Various karaoke playback devices have been put to practical use. However, since the video disc has a large diameter, it has a large storage space and has a disadvantage that it can be used only when the karaoke device has a sufficient installation space.

In order to solve these inconveniences, ISO
A coding system called MPEG1 system standardized by (International Organization for Standardization) was applied to develop a compact disc capable of recording long-time audio data and moving image data. In recording by this method, sub-band division, bit allocation for each divided band, etc. are performed, digital audio data is compressed to a fraction (for example, 1/5) and recorded, and this audio data and time division are used. , DCT or the like is used to record digital moving image data highly efficient compressed to several tens to several hundreds, for example, a CD.
When applied to a (digital data recording disk called CD-ROM), about 74 minutes of digital audio data and moving picture digital video data can be recorded on one disk.

[0005]

By the way, a CD to which such a recording system called MPEG1 system is applied.
In the case of, the data such as the song title can be recorded by the additional information. For this reason, in the case of a karaoke reproducing device to which this system is applied, the song title can be displayed on the monitor of the connected monitor or the display of the device body.

However, if the additional information is read from the disc and the title of the song is judged and displayed each time the song to be played is reserved, it is necessary to perform the operation of playing from the disc one by one. It takes a long time to display, and when another song on the disc on which the reserved song is recorded is being played, the additional information of the reserved song cannot be played, making it difficult to display the song name. Will end up.

Particularly, in the case of a commercial karaoke reproducing apparatus used in restaurants, etc., an automatic disk mounting mechanism called an autochanger is provided to automatically reproduce several tens to several hundreds of disks. When you make a playback reservation for a certain song, you can use the autochanger to insert the corresponding disc into the playback section and perform the playback operation to read the additional information and judge the song title. It takes a long time to understand the song name.

The present invention has been made in consideration of the above problems, and an object of the present invention is to make it possible to favorably display a music title and the like in a reproducing system of this type.

[0009]

According to the present invention, for example, as shown in FIG. 1, reproducing means 12 for reproducing audio data from a recording medium 11 in which plural units of audio data are recorded with individual numbers. And the storage means 42 and 43 for storing the song name data for each individual number, and the control means 21 for controlling the individual number of the audio data reproduced by the reproducing means 12. The music title data for each number is reproduced by the reproducing means under the control of the controlling means 21 so that it can be stored in the storing means 42, 43, and when the controlling means 21 is instructed to reproduce the individual number, The music title data of the corresponding number stored in the storage means 42, 43 is read, and the music title is displayed based on the read music title data.

Further, in this case, the storage means comprises a first storage means 42 in which the stored data cannot be rewritten and a second storage means 43 in which the stored data can be rewritten,
The song name data for each individual number of the recording medium 11 prepared beforehand is stored in the first storage means 42 in advance, and the song name data for each individual number of the newly added recording medium 11 is The second storage means 43 stores the data.

Further, in these cases, the music title data for each individual number recorded on the recording medium 11 is reproduced by the reproducing means 12 under the control of the control means 21 to be stored in the storage means 42.
Alternatively, when the data is stored in 43, the music titles based on the stored music title data are sequentially displayed.

[0012]

According to the present invention, since the music title data for each individual number of the recording medium is stored in the storage means, it is possible to obtain the music title data without reproducing the music title data from the recording medium. It becomes possible to display the song name and so on.

In this case, the song name data for each individual number of the recording medium prepared in advance is stored in the first storage means in advance, and the song name data for each individual number of the newly added recording medium is also stored. Is stored in the second storage means, the efficiency of the work of storing the song title data is improved,
Usability is improved.

Further, by sequentially displaying the music titles based on the stored music title data, it is possible to easily grasp the storage state.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

First, FIG. 2 shows the overall configuration of the audio / video reproduction system of this example. In the present example, an optical disc (CD-CD) on which audio data and video data (moving image) encoded by an encoding method called MPEG1 method are recorded.
R0M) is a system for reproducing audio and video, and is configured as a karaoke device. That is, reference numeral 10 in the drawing denotes an autochanger, in which a plurality of (here, 360 at maximum) optical disks 11 are housed and two CD reproducing sections 12 are arranged.
An arbitrary optical disk 11 is C by the disk transport mechanism 13.
The D reproduction section 12 can be loaded.

Then, on the auto changer 10,
This reproduction data processing device 20 is mounted. This reproduction data processing device 20 is a C on the autochanger 10 side.
The D reproduction unit 12 and the disc transport mechanism 13 are controlled in operation, and the digital data reproduced from the CD reproduction unit 12 is demodulated into an analog audio signal and an analog video signal, and the analog audio signal is amplified. To the left and right speakers 51L and 51R for reproduction. Also, the analog video signal obtained by reproduction is displayed on the monitor receiver 52.
And display it on the screen of the monitor receiver 52.

Further, on the front surface of the reproduction data processing device 20, touch keys 1a for inputting the number of a music piece to be reproduced and reproduction operation, a volume adjusting volume 1b for adjusting the reproduction volume, and a speed adjustment for adjusting the reproduction speed. Volume 1c
Various operation keys such as (hereinafter, these keys are collectively referred to as operation key 1) are arranged, and a display panel 2 for displaying the number of a music piece being reproduced, a reproduction state, and the like is arranged.

Further, a plurality of microphone connection terminals 3 are provided on the front surface of the reproduction data processing device 20, and the sounds picked up by the microphones 53 connected to the respective microphone connection terminals 3 are converted into sounds to be reproduced from the speakers 51L and 51R. It's designed for mixing.

In addition to the audio data and the video data of the moving image, the optical disc 11 of this example is recorded with the data of the song title of the recorded song by the subcodes recorded together with these data. Under the control of a controller, which will be described later, in the reproduction data processing device 20, the title of the music to be reproduced can be displayed on the screen of the monitor receiver 52 at a predetermined time.

Next, referring to FIG. 1, the structure of the circuit block of the reproduction system centering on the reproduction data processing device 20 will be described. The CD reproduction section 1 in the autochanger 10 will be described.
The reproduction of the optical disk 11 by the reproduction data processing device 2
It is performed under the control of the system controller 21 within 0. A plurality of operation keys 1 are connected to the system controller 21, and reproduction control is performed based on the operation of the operation keys 1. In this case, the operation of reserving the music to be reproduced can be performed up to 9 by operating a predetermined key, and the data of the reserved music is stored in the memory (not shown) in the system controller 21. Further, the display of the music number being reproduced on the display panel 2 is also performed in conjunction with the reproduction control under the control of the system controller 21.

C in the auto changer 10
The digital data reproduced by the D reproduction unit 12 is supplied to the EFM demodulation circuit 22 in the reproduction data processing device 20, and 8-1
Data that has been subjected to 4 modulation (EFM) and recorded on the disc is demodulated. Then, the demodulated digital data is converted into C
The data is supplied to the D-ROM processing circuit 23, and the recorded data is extracted according to the format of the CD-ROM.
This extraction process is performed under the control of the first central controller 29 described later.

Then, the audio data extracted from the reproduced data is supplied to the audio demodulation circuit 24. The audio demodulation circuit 24 demodulates the audio data coded by the MPEG1 system and converts the demodulated audio data into an analog audio signal. And
The analog voice signal output by the voice demodulation circuit 24 is
It is supplied to the audio processing circuit 25, and the audio processing circuit 25 performs output processing such as amplification. The audio signal from the microphone connection terminal 3 is supplied to the audio processing circuit 25, and a process of mixing the audio signal supplied from the microphone 53 (see FIG. 2) connected to the microphone connection terminal 3 is performed. . Then, the audio signal processed by the audio processing circuit 25 is supplied to the left and right audio signal output terminals 6L and 6R. Then, the sound is reproduced from the left and right speakers 51L and 51R connected to the output terminals 6L and 6R. The audio processing in the audio demodulation circuit 24 and the audio processing circuit 25 is performed under the control of the first central control unit 29 described later.

Further, the video data extracted from the reproduction data by the CD-ROM processing circuit 23 is supplied to the video demodulation circuit 26. The video demodulation circuit 26 demodulates the video data encoded by the MPEG1 system. In this case, the video demodulation circuit 26 includes at least three frame memories, and the reference of the video data of the past frame necessary for demodulating the video of the moving image based on the MPEG1 system is performed using this frame memory. . The video processing in the video demodulation circuit 26 is performed by a first central control unit 29 described later.
It is performed under the control of.

Then, the video data demodulated by the video demodulation circuit 26 is supplied to the NTSC processing circuit 27, where
The composite video signal (hereinafter, simply referred to as a video signal) suitable for the system is processed, and the composite video signal is supplied to the first fixed contact 31 of the changeover switch 30. Further, the video signal output from the NTSC processing circuit 45 described later is supplied to the second fixed contact 32 of the changeover switch 30.

The reproduction data processing device 20 is also provided with an external video input terminal 4 to which a video signal source such as a television tuner is connected if necessary, and the video signal obtained at the input terminal 4 is switched by a changeover switch. It is supplied to the third fixed contact 33 of 30. Furthermore, this reproduction data processing device 2
A video disc reproducing device 5 is connected to 0, and a video signal reproduced from the video disc by the video disc reproducing device 5 is supplied to the fourth fixed contact 34 of the changeover switch 30. The video disk reproducing device 5 is prepared as necessary, and reproduction from the video disk by the reproducing device 5 is performed under the control of the system controller 21 in the reproduction data processing device 20.

Then, the movable contact 35 of the changeover switch 30.
The video signal obtained in is supplied to the video signal output terminal 7,
It is supplied to the monitor receiver 52 (see FIG. 2) connected to the output terminal 7 to display an image.

Further, the additional information extracted from the reproduction data by the CD-ROM processing circuit 23 is supplied to the additional information processing circuit 28, and the additional information demodulated by the processing in this additional information processing circuit 28 is stored in the first central area. It is supplied to the control device 29. The first central control unit 29 is a microcomputer that controls processing of data reproduced from the disc. The changeover of the changeover switch 30 described above is also performed by the control of the first central controller 29.

Then, the reproduction data processing apparatus 20 of this example
Is provided with a second central control unit 41 different from the first central control unit 29, and a reservation screen for displaying the titles of music and operating states reserved under the control of the second central control unit 41. The video data of is created. The video data creation control in the second central control unit 41 is performed based on the control of the system controller 21, and the title of the music included in the additional information supplied from the additional information processing circuit 28 to the first central control unit 29. And the information of that number is the second
It is supplied to the central control unit 41.

Then, in the second central control unit 41, R
The OM 42 and the RAM 43 are connected to each other, and the ROM 42 stores in advance the data of the music title and the music number of the disk 11 arranged in the autochanger 10. The RAM 43 reproduces the data from each disk 11 by a predetermined read operation. The data of the song name and the song number are stored. In the case of this example, a flash memory is used as the RAM 43 so that stored data remains in the memory even without a backup power supply.

The storage state of the music title data in the memories 42 and 43 will now be described. The ROM 42 and the RAM 4
A memory having the same storage capacity as 3 is used, and a storage area is set as shown in FIG. That is, the first predetermined area is used as a storage area for management data and is used for version management. Then, the following predetermined area is set as a storage area of the disk vector. In the storage area of this disc vector, an area for the number of discs that can be arranged in the autochanger 10 (which is divided into 360 areas because a maximum of 360 discs can be arranged here) is set in order from the disc number 1 and corresponds to each disc. The storage address of the music title data of each disc is stored in the selected area. The remaining area is used as a storage area for music titles, and the data for each music title on the corresponding disc is stored in order at the address designated by the disc vector data. In this way, by indicating and storing the storage area of the song name data of each disc with the disc vector data, the song name data can be easily detected even if the number of songs for each disc is different. .

Then, in the music title storage area, data of the music title of one music is stored in units of 32 bytes. In this case 3
The first 1 byte of the 2 bytes is used to store the track number (that is, the song number) of the disc. Then, in the 30-byte storage area from the 2nd byte to the 31st byte, up to 15 characters (such as kanji) can be stored using a character code in which 1 character is 2 bytes. Then, the last 1 byte is used as a terminator code, and data indicating whether or not the actual music title ends within 15 characters is stored.

Note that the stored data cannot be rewritten R
In the OM 42, song title data of up to 360 discs prepared when the karaoke reproducing apparatus is installed is written in advance at the time of shipment. Therefore, when only the disc prepared at the time of installation is used, it is not necessary to actually read the song title data from the disc 11 placed in the autochanger 10, and only the data of the ROM 42 is used to display the song title. Done.

The stored data can be rewritten R
In the case of AM (actually flash memory) 43, based on the control of the system controller 21 when a new disk 11 is added in the autochanger 10 or when the allocated disk 11 is replaced with another disk 11. Then, all the music title data is read from this newly set disc 11 and stored in the RAM 43.

Here, when only a part of the disk 11 arranged in the autochanger 10 is replaced or added, the music title is displayed using both the storage data of the ROM 42 and the storage data of the RAM 43. The disk vector data in the RAM 43 is used to instruct which memory the stored data is to be used. Therefore, when the ROM 42 and the RAM 43 are mixedly used, the second central control unit 41 first looks at the disk vector data of the RAM 43 and determines which memory the stored data is to be used. is there.

A video processor 44 is connected to the second central control unit 41, and the ROM 42 and the RAM 43 are connected.
The video processor 44 is made to create the video data of the reservation screen by using the data of the music title and the music number stored in the above and the data of the current operating condition and the reservation condition supplied from the system controller 21. In this case, the video processor 44 has a built-in character generator that stores display data such as characters, numbers, and graphics, and uses the data stored in the character generator to create video data for display.

In this example, when the music title data read from the disk 11 is stored in the RAM 43, the stored music title data and music title data are transferred from the second central control unit 41 to the video processor 44. The image data for displaying the stored music titles and music numbers is created.

The video data such as the reservation screen created by the video processor 44 is transferred to the NTSC processing circuit 45.
Is supplied to the second fixed contact 32 of the changeover switch 30 and is supplied to the video signal output terminal 8. This video signal output terminal 8 is connected to a monitor receiver (not shown) dedicated to reserved display, which is different from the monitor receiver 52 shown in FIG.
However, the monitor receiver dedicated to the reservation display may be prepared if necessary.

In this example, the reservation screen output from the NTSC processing circuit 45 is displayed from the end of the song reproduced from the optical disk 11 to the reproduction of the next song (so-called song interval). Switch the video signal to the switch 30
Are selected and supplied to the monitor receiver 52 for display. As the reservation screen displayed at this time, for example, as shown in FIG. 4, a reserved song display area for nine songs is set, and by performing a reservation operation for inputting a song number, the song name corresponding to the number is set. Data is searched for from the data stored in the ROM 42 or the RAM 43, and the song numbers and song names are displayed in order from the top. In FIG. 4, only one song is input, and here, the song number display "2-6" indicating that it is the sixth song of the disc number 2 and the song name "Green Horizon" are the display areas of the first song. Is displayed in. In this case, at the same time as the reservation song display, "Please make a reservation" is displayed as a display prompting the reservation operation.

Then, when the work of storing the music title data in the RAM 43 necessary for adding or replacing the disc is being performed, a screen for reading the music title data is displayed as shown in FIG. 5, for example. Then, the second central controller 41 controls the creation of the display data. At this time, the song names and song numbers that have been read and registered in the RAM 43 are sequentially displayed in increments of eight songs. Then, the display color of the character is changed from the one in which the registration operation is actually completed among the eight songs displayed. In addition, at this time, the display indicating that the song is being read, "The song name data is being registered." Is displayed on the right side, and the warning message "Caution! Please do not cut >>"is shown at the top. Furthermore, RAM4
The capacity of the remaining area of 3 is displayed as the number of songs that can be registered.

When the work of storing the music title data in the RAM 43 is completed, the second central control unit 41 displays the display data so that a screen for completion of reading the music title data is displayed, as shown in FIG. 6, for example. Control the creation of. At this time, the last registered song title data is displayed up to eight songs, and the display indicating that the reading is being completed is changed to the indication "Reading completed song title data".

Thus, according to the reproducing system of this example,
The song title data required to display the reserved song title is RO
The ROM 4 is stored in the M 42 and the RAM 43, so that when the operation for reserving the music to be played is performed, the ROM 4
2 and the data stored in the RAM 43 can be used to quickly display the reserved song title, which improves the usability of the karaoke player.

In this case, as means for storing the music title data,
Since the ROM 42 in which the data cannot be rewritten and the RAM 43 in which the data can be rewritten are used, the song title data of the disc prepared in this karaoke apparatus is first changed to
By writing it in the ROM 42 at the time of shipment in advance, when this karaoke reproducing apparatus is first installed in a restaurant or the like, it becomes unnecessary to register the song name data, and the initial setting operation at the time of installation becomes simple. . Further, if the ROM 42 stores the corresponding song name data, it is possible to display the song name even when a disc in which the song name data is not recorded as the additional information is used. Furthermore, when the disk 11 housed in the autochanger 10 is added or replaced, only the song title data of the added or replaced disk is stored in the RAM 43.
Therefore, the work of registering the song title data can be completed in a short time.

Then, when registering the music title data in the RAM 43, a circuit necessary for displaying the reserved music title is used to create display data indicating that the data is being read, and the monitor receiver 52 or the like is made. By displaying the data, it can be surely understood that the data is being read, and the storage state of the music title data can be easily grasped.

In the above embodiment, the song title and song number are displayed as the reserved song information displayed on the reservation screen. However, when more detailed information is available, this detailed information (for example, composer Name, lyricist name, singer name, lyrics at the beginning of the song, etc.) may be stored in the ROM 42 or RAM 43 and displayed simultaneously.

Further, in the above embodiment, all the song title data of the added or replaced disc is registered in the RAM 43, but only the song title data of a part of the added or exchanged disc is stored in the RAM 43. The system controller 21 may restrict songs that are not stored so that they cannot be played. By doing so, for example, when some of the songs on the added disc are the same as the songs recorded on the already-prepared disc, the same song will not be duplicated.

In the above embodiment, an optical disc (CD-RO) to which a recording system called MPEG1 system is applied.
Although the karaoke reproduction system for audio and moving images according to M) is used, the present invention can be applied to a karaoke reproduction system using another recording method or recording medium. For example, it can be applied to a karaoke reproduction system for reproducing audio and still images from a disc.
Alternatively, it may be a karaoke reproduction system in which only the sound is reproduced from the CD. Further, it can be applied to a voice reproduction system other than the karaoke device.

Furthermore, it is needless to say that the present invention is not limited to the above-mentioned embodiments, and various configurations can be adopted without departing from the gist of the present invention.

[0049]

According to the present invention, since the song title data for each individual number of the recording medium is stored in the storage means, the song title data can be obtained without reproducing the song title data from the recording medium. It is possible to quickly display the song name and the like. Therefore, for example, by applying it to a karaoke device, it is possible to immediately know the song title at the stage when the song to be played is reserved.

In this case, the song name data for each individual number of the recording medium prepared in advance is stored in the first storage means in advance, and the song name data for each individual number of the newly added recording medium is also stored. Is stored in the second storage means, the efficiency of the work of storing the song title data is improved,
Usability is improved.

Further, by sequentially displaying the music titles based on the stored music title data, the memory state can be easily grasped and the usability is improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a circuit block according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an overall system configuration according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a usage state of a memory according to an embodiment.

FIG. 4 is an explanatory diagram showing a display example of a reservation screen according to an embodiment.

FIG. 5 is an explanatory diagram showing a display example at the time of reading music title data according to one embodiment.

FIG. 6 is an explanatory diagram showing a display example when reading of music title data is completed according to an embodiment.

[Explanation of symbols]

 6L, 6R audio signal output terminal 7, 8 video signal output terminal 10 autochanger 11 optical disk 12 CD playback unit 21 system controller 29 first central control unit 30 output video changeover switch 41 second central control unit 42 ROM 43 RAM (flash memory)

Claims (3)

[Claims] 1. A reproducing means for reproducing audio data from a recording medium in which a plurality of units of audio data are recorded with individual numbers, and a control means for controlling an individual number of the audio data reproduced by the reproducing means. And storage means for storing the song name data for each individual number, and the song name data for each individual number recorded on the recording medium is reproduced by the reproducing means under the control of the control means. When the individual number to be reproduced is instructed by the control means, the music title data of the corresponding number stored in the storage means is read out, and the read music title data is stored in the read music title data. An audio playback system that displays the song name based on it. 2. The music name data for each individual number of a recording medium prepared in advance, which comprises a first storage means in which the stored data cannot be rewritten and a second storage means in which the stored data can be rewritten. And the song name data for each individual number of the newly added recording medium is stored in advance in the first storage means, and the song name data is stored in the second storage means. Audio playback system. 3. When the music title data for each individual number recorded on the recording medium is reproduced by the reproducing means under the control of the control means and stored in the storage means, the music title based on the stored music title data. The audio reproduction system according to claim 1 or 2, wherein the are sequentially displayed.