JP3789492B2 - Reproduction system and reproduction method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is suitable for application to a karaoke playback device using a digital data recording disk called CD (compact disk), for example. Na It relates to a playback system.
[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, every time reservation of a song to be played is performed, additional information is read from the disc, and the song name is judged and displayed. Therefore, it is necessary to perform an operation to play from the disc one by one, and it takes time to display the song name. In addition, if another song on the disc on which the reserved song is recorded is being played back, the additional information of the reserved song cannot be played back, making it difficult to display the song name.
[0007]
In particular, in the case of a commercial karaoke playback device used in restaurants, etc., an automatic disk mounting mechanism called an autochanger is provided so that tens to hundreds of disks can be automatically played back. When you make a reservation for playback of a certain song, it is assumed that the auto changer attaches the corresponding disc to the playback unit and performs playback operation to read additional information and determine the song name , It takes a long time to understand the song title.
[0008]
The present invention has been made in view of such a problem, and an object of the present invention is to make it possible to satisfactorily display a song title or the like in this type of reproduction system.
[0009]
[Means for Solving the Problems]
The reproduction system according to the present invention includes a first storage means that cannot be rewritten and stores a plurality of song title data in advance by assigning individual numbers, and newly added song title data read from the first storage medium. A rewritable second storage means for assigning and storing an individual number, an instruction means for instructing desired data from a second storage medium in which a plurality of data is assigned and stored with an individual number, a second In response to an instruction from the storage means, reproducing means for reading and reproducing the designated data from the storage medium, A disk vector for managing in which of the first and second storage means the song name data stored in the second storage means and assigned with the individual number corresponding to the designated data is stored. The first and second storage means store the song title data to which the individual number corresponding to the instructed data is assigned. One of And a control means for detecting the information, and the control means assigns an individual number to a part of the song title data read from the first storage medium and records it in the second storage means. is there.
[0010]
In the reproduction method of the present invention, a plurality of song title data each assigned with an individual number is stored in advance in a non-rewritable first storage means, and the song title data read from the first storage medium is stored. A step of assigning an individual number to a part of the data and storing it in a rewritable second storage means, and a desired data is indicated from a second storage medium in which a plurality of data is assigned an individual number and stored. Steps, A disc for managing in which of the first and second storage means the song title data to which the individual number corresponding to the data instructed in the instructing step is assigned is stored. Vector The first and second storage means store the song title data to which the individual number corresponding to the instructed data is assigned. One of And detecting song name data to which an individual number corresponding to the instructed data is given from previously stored song name data and newly added song name data.
[0012]
[Action]
According to the present invention, the song title data for each individual number of the recording medium is stored in the storage means, so that the song title data can be obtained without reproducing the song title data from the recording medium. Can be displayed.
[0013]
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 title data for each individual number of the newly added recording medium is stored in the first storage means. By storing the data in the second storage means, the efficiency of storing the music title data is improved, and the usability is improved.
[0014]
Further, by sequentially displaying the song titles based on the song title data stored, the storage state can be easily grasped.
[0015]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0016]
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, and a plurality of (up to 360) optical discs 11 are accommodated in the auto changer 10 and two CD reproducing units 12 are arranged. Thus, an arbitrary optical disk 11 can be loaded into the CD playback unit 12.
[0017]
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 52 and displayed on the screen of the monitor receiver 52.
[0018]
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.
[0019]
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.
[0020]
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 title of a song to be reproduced can be displayed on the screen of the monitor receiver 52 at a predetermined time.
[0021]
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.
[0022]
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.
[0023]
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.
[0024]
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.
[0025]
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.
[0026]
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.
[0027]
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. .
[0028]
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.
[0029]
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.
[0030]
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.
[0031]
Here, the storage state of the song title data in each of the memories 42 and 43 will be described. The ROM 42 and the RAM 43 have substantially the same storage capacity, and storage areas are set as shown in FIG. That is, the first predetermined area is used as a management data storage area, and is used for version management and the like. The subsequent predetermined area is used as a disk vector storage area. In this disk vector storage area, an area corresponding to the number of disks that can be arranged in the autochanger 10 (here, a maximum of 360 can be arranged and divided into 360 areas) is set in order from the disk number 1, and corresponds to each disk. In this area, the storage address of the song title data of each disc is stored. The remaining area is used as a song title storage area, and the song title data of the corresponding disc is stored in order at the address indicated by the disc vector data. In this way, the song vector data can be easily detected even if the number of songs for each disc is different by indicating the storage area of the song title data for each disc and storing it. .
[0032]
In the song name storage area, the song title data of one song is stored 32 bytes at a time. In this case, the track number (that is, the song number) of the disc is stored using the first one of the 32 bytes. Then, in a 30-byte storage area from the 2nd byte to the 31st byte, up to 15 characters (kanji, etc.) can be stored using a character code in which 1 character is 2 bytes. The last 1 byte is used as a terminator code, and data indicating whether or not the actual song name ends within 15 characters is stored.
[0033]
The ROM 42 which cannot rewrite the stored data is pre-written with the song title data of up to 360 discs prepared when the karaoke player is installed. Therefore, when only the disk prepared at the time of installation is used, there is no need to actually read the song title data from the disc 11 arranged in the autochanger 10, and the song title display etc. is performed using only the data of the ROM 42. Done.
[0034]
In the case of RAM (actually flash memory) 43 in which stored data can be rewritten, when a new disk 11 is added to the autochanger 10 or when the distributed disk 11 is replaced with another disk 11. Based on the control of the system controller 21, all the song title data are read from the newly set disk 11 and stored in the RAM 43.
[0035]
Here, when only a part of the disk 11 arranged in the autochanger 10 is exchanged or added, the music title display is performed using both the data stored in the ROM 42 and the data stored in the RAM 43. Whether to use the data stored in the memory is indicated by the disk vector data in the RAM 43. Therefore, when the ROM 42 and the RAM 43 are used together, the second central control device 41 first looks at the disk vector data in the RAM 43 and determines which memory storage data is used. is there.
[0036]
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.
[0037]
In this example, when the song title data read from the disk 11 is stored in the RAM 43, the song title data and song number data stored in this manner are sequentially supplied from the second central controller 41 to the video processor 44. Thus, video data for displaying the stored song name and song number is created.
[0038]
Then, the video data such as the reservation 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. And 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.
[0039]
In this example, the video signal of the reserved screen output from the NTSC processing circuit 45 is from the end of the music reproduced from the optical disk 11 until the next music is reproduced (so-called music interval). The switch 30 is 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 display area for reserved songs for nine songs is set, and by performing a reservation operation for inputting a song number, a song name corresponding to that number is displayed. Is searched from the data stored in the ROM 42 or 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.
[0040]
Then, when the work of storing the song title data required when the disc is added or replaced is being performed in the RAM 43, the screen for reading the song title data is displayed as shown in FIG. 5, for example. Two central control devices 41 control the creation of display data. At this time, the song names and song numbers read and registered in the RAM 43 are displayed in order of eight songs. Then, the character display color is changed from the one in which the registration operation is actually completed in the eight music pieces displayed. At this time, the display “Song name data is being registered.” Is displayed on the right side to indicate that the reading is in progress, and a warning display “CAUTION! << Power supply to prevent the power from being turned off during reading. Please do not cut >>"is shown at the top. Further, the capacity of the remaining area of the RAM 43 is displayed as the number of pieces of music that can be registered.
[0041]
Then, when the work of storing the song name data in the RAM 43 is completed, the second central control device 41 creates display data so that a screen for completing the reading of the song title data is displayed, for example, as shown in FIG. Control. At this time, the last registered song name data is displayed up to eight songs, and the display indicating that reading is in progress changes to the display “song name data registered.” Indicating that reading is completed.
[0042]
As described above, according to the reproduction system of this example, the song name data necessary for displaying the reserved song name is stored in the ROM 42 and the RAM 43, so that when the operation for reserving the song to be played is performed, It becomes possible to quickly display the reserved song titles using the data stored in the ROM 42 and the RAM 43, and the usability as a karaoke player is improved.
[0043]
In this case, since the ROM 42 that cannot rewrite the data and the RAM 43 that can be rewritten are used as the song name data storage means, the song name data of the disk prepared in the karaoke device is first stored in the ROM 42 at the time of shipment. By writing in, when this karaoke reproducing apparatus is first installed in a restaurant or the like, it becomes unnecessary for the registration work of the song title data, and the initial setting work at the time of installation becomes simple. If the song name data corresponding to the ROM 42 is stored, the song title can be displayed even when a disc in which the song name data is not recorded as additional information is used. Furthermore, when the disk 11 stored in the autochanger 10 is added or exchanged, only the song name data of the added or exchanged disk needs to be stored in the RAM 43, so that the registration work of the song name data can be performed in a short time. That's it.
[0044]
When registering song name data in the RAM 43, display data indicating that data is being read is created and displayed on the monitor receiver 52 or the like using a circuit necessary for displaying the reserved song name. By doing so, it can be surely read that data is being read, and the storage state of the song title data can be easily grasped.
[0045]
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, the composer name, the 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 stored in the ROM 42 or RAM 43 and displayed simultaneously.
[0046]
Further, in the above-described embodiment, all the song title data of the added or exchanged disc are registered in the RAM 43, but only the song title data of some songs of the added or exchanged disc are stored in the RAM 43 and are not stored. The system controller 21 may restrict the music so that it cannot be reproduced. In this way, 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 is not duplicated.
[0047]
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. Or it is good also as a karaoke reproduction system which reproduces | regenerates only audio | voice from CD. Furthermore, the present invention can be applied to an audio reproduction system other than a karaoke apparatus.
[0048]
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.
[0049]
【The invention's effect】
According to the present invention, the song title data for each individual number of the recording medium is stored in the storage means. Therefore, the song title data can be obtained without reproducing the song title data from the recording medium. It can be displayed. Therefore, for example, by applying it to a karaoke device, it is possible to know the name of a song immediately when a song to be played is reserved.
[0050]
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 title data for each individual number of the newly added recording medium is stored in the first storage means. By storing the data in the second storage means, the efficiency of storing the music title data is improved, and the usability is improved.
[0051]
Further, by sequentially displaying the song names based on the stored song name data, the stored state can be easily grasped and the usability is improved.
[Brief description of the drawings]
FIG. 1 is a configuration diagram illustrating 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 illustrating 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 when reading song name data according to an embodiment;
FIG. 6 is an explanatory diagram showing a display example when music title data reading 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 disc
12 CD playback section
21 System controller
29 First central control unit
30 Output video selector switch
41 Second central control unit
42 ROM
43 RAM (flash memory)

Claims (6)

A non-rewritable first storage means for storing a plurality of song title data with individual numbers assigned in advance;
Rewritable second storage means for storing newly added song title data read from the first storage medium with an individual number assigned thereto;
An instruction means for instructing desired data from a second storage medium in which a plurality of data are stored with individual numbers assigned thereto;
Reproducing means for reading out and reproducing the instructed data from the second storage medium;
In response to an instruction from the instruction means, the song name data stored in the second storage means and assigned with an individual number corresponding to the instructed data is one of the first and second storage means. Control means for detecting, from one of the first and second storage means , song name data to which an individual number corresponding to the instructed data is assigned based on a disc vector that manages whether or not The control means assigns an individual number to a part of the song title data read from the first storage medium and records it in the second storage means
Playback system. Furthermore,
Read means for reading the individual number and the song title data from the first storage medium in which a plurality of song title data are assigned and stored with individual numbers,
The playback system according to claim 1, wherein the control means controls the second storage means to store the read individual number and song name data. Furthermore,
A storage unit for storing the plurality of second storage media;
The second storage means is
A data area for storing a plurality of song title data;
A disk vector for storing a storage address on the data area in which music title data corresponding to data stored in the plurality of second storage media is stored;
The control means includes
The reproduction system according to claim 1, wherein music name data to which an individual number corresponding to the instructed data is given is detected from the first and second storage means according to the storage address. The second storage means is
Remember the above disk vector ,
The control means includes
The playback system according to claim 3, wherein song name data to which an individual number corresponding to the instructed data is given is selectively detected from the first and second storage means according to the disc vector . Furthermore,
Display means for displaying the song name data detected by the control means;
The control means includes
In response to an instruction from the instruction means, song name data to which an individual number corresponding to the designated audio data is assigned is detected from the first and second storage means, and the detected song name data is displayed on the display means. The playback system according to claim 1, wherein the playback system is controlled to output to A plurality of song title data each assigned with an individual number is stored in advance in a non-rewritable first storage means, and an individual number is assigned to a part of the song title data read from the first storage medium. Storing in a second storage means that can be provided and rewritten;
Instructing desired data from a second storage medium in which a plurality of pieces of data are assigned and stored with individual numbers;
Which of the first storage means and the second storage means stores the song title data that is stored in the second storage means and is given an individual number corresponding to the data instructed in the instructing step. Based on the disc vector for managing the song data, the song name data to which the individual number corresponding to the designated data is assigned is detected from either one of the first and second storage means , and the designated data Detecting the song name data to which the individual number corresponding to is added from the previously stored song name data and the newly added song name data;
A playback method comprising:

Images