JP3857507B2 - Playback apparatus and playback method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a playback apparatus and playback method suitable for application to a karaoke playback device using a digital data recording disk called CD (compact disk), for example.
[0002]
[Prior art]
Conventionally, a karaoke playback device using a small digital data recording disk of about 12 cm in diameter called a CD (compact disc) (that is, a device that plays back an accompaniment sound of a song and mixes and plays back sound input from a microphone) ) Has been developed. In this case, what is usually called a CD has only up to 74 minutes of audio data recorded as the main digital data on a single disc, but karaoke playback equipment plays back images such as lyrics. It is more convenient to display according to the sound. For this reason, in the case of a CD used for karaoke, there is one in which video data of a still image for displaying lyrics and the like is recorded in an accompanying recording area called a subcode.
[0003]
On the other hand, since a moving image can be displayed more complicated than a still image, a karaoke playback device using a video recording disc using a relatively large disc called a video disc (for example, about 30 cm in diameter). Have been put into practical use. However, since the video disc has a large diameter, there is a disadvantage that it can be used only when the storage space for the video disc is large and the installation space for the karaoke equipment is sufficient.
[0004]
In order to solve these inconveniences, a long-time audio data and moving picture video data are recorded on a small disk by applying an encoding method called MPEG1 standardized by ISO (International Organization for Standardization). What was made possible was developed. In this method, recording is performed by sub-band division, bit allocation for each divided band, etc., and digital audio data is compressed to a fraction (for example, 1/5) and recorded in time division. , Which uses DCT, etc., to record digital video data that is highly efficient compressed to several tens to several hundreds, and is applied to, for example, a CD (digital data recording disk called CD-ROM) Thus, it is possible to record about 74 minutes of digital audio data and moving image digital video data on one disc.
[0005]
[Problems to be solved by the invention]
By the way, in the case of a CD to which such a recording system called MPEG1 system is applied, data such as a song title can be recorded with additional information. For this reason, in the case of a karaoke playback device to which this system is applied, the song title can be displayed on the connected monitor receiver, the display of the device main body, or the like.
[0006]
However, in the case of a conventional karaoke player, a good song title display has not been performed. That is, for example, it is conceivable to operate the song name display switch provided on the playback device to switch the video on the screen of the monitor receiver from the display of the movie reproduced from the disc to the display of the song name. There are inconveniences that the operation is troublesome and the display of the moving image reproduced from the disc is interrupted while the song title is displayed. For this reason, it is conceivable to display the title of a song with superimpose on the moving image reproduced from the disc, but in this case, it becomes difficult to see the moving image by superimposing the song name.
[0007]
The present invention has been made in view of such problems, and it is an object of the present invention to enable the display of a song title and the like in such a playback apparatus and playback method .
[0008]
[Means for Solving the Problems]
The reproduction apparatus of the present invention is a reproduction apparatus that includes reproduction means, instruction means, storage means, and control means, and reproduces audio data and video data corresponding to a song. Data and video data can be reproduced, the instruction means can input the designation of music, the storage means stores additional information corresponding to the music, the control means performs reservation processing and reproduction processing, and reserves The process uses the song instructed by the instruction means as a reserved song, and the reproduction process performs the first and second processes when there is a reserved song. The first process is the audio data for the highest-order reserved song. And the video data is searched by the reproduction means, a list of reserved songs is displayed on the display means based on the additional information stored in the storage means, and a display indicating that the search is being performed is displayed on the display means. After the first process Is reproduced in the reproduction unit audio data and video data for most upper reserved songs, after reproduction end, with return to the first processing, and at least in the case of during the search, and when in the given song by the instruction means, The display color of the top reserved song in the list of reserved songs is changed and displayed.
[0009]
The reproduction method according to the present invention reproduces audio data and video data corresponding to a song, enables reproduction of the audio data and video data, instruction processing for enabling designation of song, and song A storage process for storing additional information corresponding to the above, a reservation process, and a playback method for performing a playback process, wherein the reservation process uses the music designated in the instruction process as a reserved song, and the playback process If there is a song, the first and second processes are performed. The first process searches the audio data and video data for the highest-order reserved song, and creates a list of reserved songs based on the stored additional information. In addition to the display, a display indicating that the search is being performed is displayed. In the second process, after the first process, the audio data and the video data for the highest-order reserved song are played back. And return to processing , In the case of at least during the search, in the case of during the specified songs by the instruction process, is intended to be displayed by changing the display color of the reserved song of the most high-order in the list of reserved song.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0011]
First, FIG. 2 shows the overall configuration of the audio / video reproduction system of this example. In this example, karaoke is a system that reproduces audio and video from an optical disc (CD-R0M) on which audio data and video data (moving image) encoded by an encoding method called MPEG1 is recorded. It is configured as a device. That is, reference numeral 10 in the figure denotes an autochanger. In this autochanger 10, a plurality of (for example, 360) optical disks 11 are stored, and two CD reproducing units 12 are arranged. The optical disk 11 can be loaded into the CD playback unit 12.
[0012]
The reproduction data processing device 20 is placed on the autochanger 10. The reproduction data processing device 20 controls the operation of the CD reproduction unit 12 and the disc transport mechanism 13 on the autochanger 10 side, and also demodulates the digital data reproduced from the CD reproduction unit 12 to obtain an analog audio signal and an analog video signal. The analog audio signal is amplified and supplied to the left and right speakers 51L and 51R for reproduction. Further, the analog video signal obtained by reproduction is supplied to the monitor receiver 51 and displayed on the screen of the monitor receiver 51.
[0013]
Further, on the front surface of the reproduction data processing device 20, there are a touch key 1a for inputting the number of a song to be reproduced and a reproduction operation, a volume adjustment volume 1b for adjusting the reproduction volume, and a speed adjustment volume 1c for adjusting the reproduction speed. Are arranged (hereinafter, these keys are collectively referred to as operation keys 1), and a display panel 2 for displaying the number of the music being reproduced and the reproduction state is arranged.
[0014]
Further, a plurality of microphone connection terminals 3 are provided on the front surface of the reproduction data processing device 20, and the sound picked up by the microphones 53 connected to the respective microphone connection terminals 3 can be mixed with the sound to be reproduced from the speakers 51L and 51R. It is.
[0015]
In addition to the audio data and the video data of the moving image, the optical disc 11 of this example has recorded the song name data of the recorded music, etc., with subcodes recorded accompanying these data. Based on the control of a controller, which will be described later, in the reproduction data processing device 20, the name of a song to be reproduced can be displayed on the screen of the monitor receiver 51 at a predetermined time.
[0016]
Next, with reference to FIG. 1, the structure of a circuit block of a reproduction system centering on the reproduction data processing device 20 will be described. The reproduction of the optical disk 11 by the CD reproduction unit 12 in the autochanger 10 is performed by the reproduction data processing device. This is performed under the control of the system controller 21 in the system 20. 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, up to nine songs can be reserved for a song to be played back by operating a predetermined key, and data of the reserved song is stored in a memory (not shown) in the system controller 21. In addition, display of the music number being reproduced on the display panel 2 is performed in conjunction with the reproduction control based on the control of the system controller 21.
[0017]
Then, the digital data reproduced by the CD reproducing unit 12 in the autochanger 10 is supplied to the EFM demodulating circuit 22 in the reproduced data processing device 20, and demodulated by 8-14 modulation (EFM) and recorded on the disc. I do. Then, the demodulated digital data is supplied to the CD-ROM processing circuit 23, and the recorded data is extracted according to the format of the CD-ROM. This extraction process is performed based on the control of the first central controller 29 described later.
[0018]
Then, the audio data extracted from the reproduction data is supplied to the audio demodulation circuit 24. The audio demodulating circuit 24 demodulates audio data encoded by the MPEG1 system and converts the demodulated audio data into an analog audio signal. Then, the analog audio signal output from the audio demodulation circuit 24 is supplied to the audio processing circuit 25, and the audio processing circuit 25 performs output processing such as amplification. The audio processing circuit 25 is supplied with an audio signal from the microphone connection terminal 3 and performs a process of mixing the audio signal supplied from the microphone 53 (see FIG. 2) connected to the microphone connection terminal 3. . 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, 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 demodulating circuit 24 and the audio processing circuit 25 is performed based on the control of a first central control device 29 described later.
[0019]
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 video data encoded by the MPEG1 method. In this case, the video demodulating circuit 26 includes at least three frame memories, and reference of video data of past frames necessary for demodulating the video of the moving image based on the MPEG1 system is performed using the frame memories. . The video processing in the video demodulation circuit 26 is performed based on the control of a first central control device 29 described later.
[0020]
Then, the video data demodulated by the video demodulation circuit 26 is supplied to the NTSC processing circuit 27 to perform a process of making a composite video signal (hereinafter simply referred to as a video signal) conforming to the NTSC system, and this composite video signal is switched. The first fixed contact 31 of the switch 30 is supplied. 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.
[0021]
Further, the reproduction data processing device 20 includes an external video input terminal 4, and a video signal source such as a television tuner is connected to the input terminal 4 as necessary. 3 to the fixed contact 33. Further, a video disk playback device 5 is connected to the playback data processing device 20, and a video signal obtained from the video disk playback by the video disk playback device 5 is transferred to a fourth fixed contact of the changeover switch 30. 34. Note that the video disk playback device 5 is prepared as necessary, and playback from the video disk by the playback device 5 is performed based on the control of the system controller 21 in the playback data processing device 20.
[0022]
The video signal obtained at the movable contact 35 of the changeover switch 30 is supplied to the video signal output terminal 7 and supplied to the monitor receiver 52 (see FIG. 2) connected to the output terminal 7 to display the video. .
[0023]
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 the additional information processing circuit 28 is supplied to the first central controller 29. To supply. The first central control device 29 is a microcomputer that controls the processing of data reproduced from the disc. The changeover of the changeover switch 30 is also performed under the control of the first central control device 29.
[0024]
The reproduction data processing device 20 of this example includes a second central control device 41 that is different from the first central control device 29, and is reserved based on the control of the second central control device 41. The video data of the reservation screen for displaying the song name and operation status is created. The video data creation control in the second central control device 41 is performed based on the control of the system controller 21, and the song title included in the additional information supplied from the additional information processing circuit 28 to the first central control device 29. And the information of the number are supplied to the second central controller 41.
[0025]
The second central controller 41 is connected to a ROM 42 and a RAM 43. The ROM 42 stores in advance the song title and song number data of the disk 11 arranged in the autochanger 10, and the RAM 43 stores a predetermined value. The data of the music title and the music number obtained by reproducing from each disk 11 by the reading operation are stored. In the case of this example, a flash memory is used as the RAM 43 so that the stored data remains in the memory even without a backup power source.
[0026]
Then, a video processor 44 is connected to the second central control device 41, data of song titles and song numbers stored in the ROM 42 and RAM 43, current operation status and reservation status data supplied from the system controller 21, and Is used to cause the video processor 44 to create video data for the reservation screen. In this case, the video processor 44 has a built-in character generator that stores display data such as characters, numbers, and graphics, and creates video data to be displayed using the data stored in the character generator.
[0027]
Then, the video data of the reserved screen created by the video processor 44 is supplied to the NTSC processing circuit 45 as an NTSC video signal, and this video signal is supplied to the second fixed contact 32 of the changeover switch 30. It is supplied to the video signal output terminal 8. The video signal output terminal 8 is connected to a monitor receiver (not shown) dedicated to reservation display, which is different from the monitor receiver 52 shown in FIG. However, a monitor receiver dedicated to the reservation display may be prepared as necessary.
[0028]
Next, an operation when reproduction is performed using the reproduction system configured as described above will be described with reference to the flowchart of FIG.
[0029]
First, the system controller 21 determines whether there is a song reserved for playback (step 101). If there is no reserved song, the system controller 21 displays a second display screen indicating that the reservation is accepted. It is created under the control of the central control unit 41 and is output from the NTSC processing circuit 45, and the movable contact 35 of the changeover switch 30 is connected to the second fixed contact 32, and this reservation reception screen is displayed on the monitor receiver 52 ( Step 102).
[0030]
As the reservation reception screen displayed at this time, for example, as shown in FIG. 4, a display area for nine reserved songs is set, and a reservation operation for inputting a song number is performed, so that the corresponding number is displayed. The song name data is searched from the data stored in the ROM 42 and the RAM 43, and the song number and the song name are displayed in order from the top. FIG. 4 shows a state in which only one song is input. Here, the song number display “2-6” indicating that it is the sixth song of disk number 2 and the song name “green horizon” are the display area of the first song. Is displayed. In this case, at the same time as the reserved music display, “Reservation please” is displayed as a display prompting a reservation operation.
[0031]
When this reservation acceptance screen is displayed, the system controller 21 determines whether there is a reserved song by returning to step 101. If there is a reserved song, it is determined whether or not the reserved song is in a standby state where it can be played back (step 103). In other words, in the system of this example, when a song is reserved, the disc on which the reserved song is recorded is loaded into one of the disc playback units 12 under the control of the system controller 21 and the disc loaded is loaded. A search operation is performed to search for a recording location of the corresponding song from In step 103, it is determined whether or not the search operation for the music to be reproduced next has been completed. If the search operation has not been completed, a second display screen is displayed indicating that the search is being performed. It is created under the control of the central controller 41 and is output from the NTSC processing circuit 45 (step 104). At this time, the movable contact 35 of the changeover switch 30 maintains the state of being connected to the second fixed contact 32 and causes the monitor receiver 52 to display the screen being searched.
[0032]
As a screen during search displayed at this time, for example, as shown in FIG. 5, up to nine reserved songs are displayed as in the reservation display screen, and as a display for notifying that the search is being performed, "Please wait for a while before playing." Is displayed. FIG. 5 shows a state where five music reservations have been made.
[0033]
In this example, since two disk playback units 12 are prepared, while the other disk playback unit 12 performs playback, the other reserved disk playback unit 12 can load and search for the next reserved song. In such a case, the screen display during the search is not performed and the process proceeds to the next step.
[0034]
When a screen indicating that the search is being performed is displayed, the system controller 21 determines whether the system controller 21 returns to step 103 and is in a standby state. When the standby state is entered, a display screen indicating the standby state is created under the control of the second central control device 41 and output from the NTSC processing circuit 45 (step 105). At this time, the movable contact 35 of the changeover switch 30 maintains the state connected to the second fixed contact 32 and causes the monitor receiver 52 to display this standby state screen.
[0035]
As the standby state screen displayed at this time, for example, as shown in FIG. 6, up to nine reserved songs are displayed in the same manner as the reservation display screen or the screen being searched, and the standby state is notified. As a display to be displayed, “Please press the start key” is displayed.
[0036]
In this state, the system controller 21 determines whether or not the start key in the operation key 1 has been operated (step 106), and continues to display the standby state until the start key is operated.
[0037]
If it is determined in step 106 that the start key has been operated, the system controller 21 starts playback of the corresponding song on the disc 11 loaded in the disc playback unit 12, and uses the playback data of this song as the first data. The audio signal obtained by performing the reproduction process based on the control of the central control unit 29 and outputting it is output from the output terminals 6L and 6R and reproduced from the speakers 51L and 51R, and the video signal of the moving image obtained by the reproduction is obtained. It is output from the NTSC processing circuit 27. At this time, the movable contact 35 of the changeover switch 30 is switched to the first fixed contact 31 and the video of the moving image reproduced from the disk 11 is displayed on the screen of the monitor receiver 52 connected to the output terminal 7 ( Step 107).
[0038]
While the audio and video are being reproduced from the disc, the system controller 21 determines whether or not the redo key in the operation key 1 has been operated (step 108). If it is determined that the redo key has been operated, a display screen for instructing re-input of the music to be played back is created under the control of the second central control device 41 and output from the NTSC processing circuit 45. (Step 109). At this time, the movable contact 35 of the changeover switch 30 is switched to the second fixed contact 32 and the monitor receiver 52 displays a screen for instructing this re-input.
[0039]
As a screen for instructing re-input to be displayed at this time, for example, as shown in FIG. 7, up to nine reserved tunes are displayed as in the reservation display screen or the screen being searched, and re-input is instructed As a display, “Please enter again.” Is displayed. However, in this case, the second display area from the top is the display of the first reserved song (that is, the leftmost number is 1, 2, 3,... From the second display area), and the top The display area of the reserved music displayed in FIG. 5 is a display area for the music to be re-inputted, and the music that has been played once is displayed until the re-input.
[0040]
In this state, when the song number is input with the operation key 1, the song name displayed at the top is changed to the song with the newly entered number, and the start key is operated by returning to step 106. If the start key is operated, the process proceeds to step 107 and the newly input music is reproduced.
[0041]
In addition, there is a case where the same song is reproduced again from the beginning without changing the song number. In such a case, operate the redo key to display the screen for instructing re-input, and then operate the start key directly without performing a new input operation for the song number. It is played again from the beginning.
[0042]
Next, the system controller 21 determines whether or not the song has been played to the end (step 110). If the song has been played to the end, the system controller 21 returns to step 101 to determine whether or not there is a next reserved song. The corresponding reservation screen is displayed (any one of FIGS. 4 to 6) until the start key is operated.
[0043]
When another monitor receiver dedicated to reservation display is connected to the video signal output terminal 8, the monitor receiver dedicated to reservation display is always used regardless of the state of the changeover switch 30, as shown in FIGS. A reservation screen is displayed.
[0044]
In the case of this example, the display color of the display area of the uppermost reserved music when the reservation screen is displayed is changed in each reservation screen shown in FIGS. The display color is set under the control of the second central control device 41.
[0045]
In this way, the video displayed on the monitor receiver 52 is automatically switched between the display of the video reproduced from the disk 11 and the display of the reservation screen, so that the reservation screen can be displayed satisfactorily. That is, in a state where audio and video are not reproduced from the disk 11 (so-called inter-song state), the reserved song name and the song number are automatically displayed, and there is no operation for calling the reservation screen. , You can check the reservation status. In the state where the reserved song is being played back, only the played video is displayed, and the playback video is not difficult to see when displaying the reserved song.
[0046]
When this reservation display is performed, the reservation is being received, searching, standby state, re-input instruction, etc. are simultaneously displayed in characters, so that the current playback control state can be immediately identified from the display screen, and the karaoke playback device Improved usability.
[0047]
In the above-described embodiment, the movable contact 35 of the changeover switch 30 is connected to the second fixed contact 32 and the reservation screen is displayed on the monitor receiver 52 in the state between songs. When it is not necessary to display the screen (for example, when the reservation screen can be recognized by another monitor receiver connected to the output terminal 8), the movable contact 35 can be used when the music is not reproduced from the disk 11. Is connected to the third fixed contact 33 or the fourth fixed contact 34, and a video from another video signal source connected to the input terminal 4 or a video from the video disk playback device 5 is sent to the monitor receiver 52. You may make it display. Such a setting is possible, for example, by causing the system controller 21 to set the display mode between songs.
[0048]
In the above-described embodiment, the song title and the song number are displayed as the reserved song information displayed on the reservation screen. However, when more detailed information can be obtained, this detailed information (for example, composer name, song lyrics) is displayed. The name of the person, the name of the singer, the lyrics at the beginning of the song, etc.) may be displayed at the same time.
[0049]
In the above-described embodiment, a karaoke playback system for audio and moving images using an optical disc (CD-ROM) to which a recording system called MPEG1 is applied. However, it can also be applied to a karaoke playback system using other recording methods and recording media. . For example, the present invention can be applied to a karaoke playback system that plays back sound and still images from a disc. Furthermore, the present invention can also be applied to audio and video playback systems other than karaoke devices.
[0050]
Furthermore, the present invention is not limited to the above-described embodiments, and various configurations can be taken without departing from the gist of the present invention.
[0051]
【The invention's effect】
According to the present invention, a list of audio data for which playback reservation is instructed is displayed, and a list of whether or not the audio data to be reproduced next in the list is in a reproducible standby state. When a playback start instruction is displayed with the table being displayed at the same time as being in a standby state where playback is possible, playback is started and the display is switched to image display based on the played back image data. While displaying a list of the names of songs to be played back and a display indicating that it is in a standby state at the same time, it is appropriately displayed by automatically switching between the playback image display.
[Brief description of the 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 a flowchart showing display switching according to an embodiment;
FIG. 4 is an explanatory diagram illustrating a display example during reservation according to an embodiment;
FIG. 5 is an explanatory diagram illustrating a display example during a search according to an embodiment;
FIG. 6 is an explanatory diagram illustrating a display example during standby according to an embodiment;
FIG. 7 is an explanatory diagram illustrating a display example during re-input according to an embodiment;
[Explanation of symbols]
6L, 6R Audio signal output terminal, 7, 8 Video signal output terminal, 10 Auto changer, 11 Optical disk, 12 CD playback unit, 21 System controller, 29 First central controller, 30 Output video selector switch, 41 Second central Control device, 42 ROM, 43 RAM

Claims (2)

A playback device comprising playback means, instruction means, storage means, and control means for playing back audio data and video data corresponding to a song,
The reproduction means enables reproduction of the audio data and video data,
The instruction means can input the designation of the song,
The storage means stores additional information corresponding to the song,
The control means performs reservation processing and playback processing,
In the reservation process, the song instructed by the instruction means is a reserved song,
When there is a reserved song, the playback process performs the first and second processes,
The first process is to cause the reproduction means to search for audio data and video data for the highest-order reserved song, to display a list of reserved songs on the display means based on the additional information stored in the storage means, The display means to display on the display means,
The second process causes the reproduction means to reproduce the audio data and the video data for the highest-order reserved song after the first process, and after the reproduction ends, returns to the first process,
A playback apparatus, wherein the display color of the highest-order reserved song in the list of reserved songs is changed and displayed at least when the search is being performed and when a song is being designated by the instruction means . Play audio and video data corresponding to the song,
A playback process that enables playback of the audio data and video data;
Instruction processing that allows you to enter the song specification,
A storage process for storing additional information corresponding to the song;
Reservation processing,
A playback method for performing playback processing,
In the reservation process, the music instructed in the instruction process is a reserved music,
The reproduction process performs the first and second processes when there is a reserved song,
The first process is to search audio data and video data for the highest-order reserved song, display a list of reserved songs based on the stored additional information, and display a display indicating that the search is being performed. ,
The second process reproduces the audio data and the video data for the highest-order reserved song after the first process, returns to the first process after the reproduction ends,
A reproduction method, wherein the display color of the top reserved song in the list of reserved songs is changed and displayed at least when the search is being performed and when a song is being designated by the instruction process .

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