JP3446627B2 - Media playback device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium reproducing device that accommodates a plurality of storage media.

[0002]

2. Description of the Related Art A karaoke apparatus is a DVD changer or a C which accommodates a large number of disk media storing various information such as background video, karaoke music harmony data, and audio multiplex data.
The D-ROM changer is connected. When reading information, the corresponding disk is taken out from the slot and loaded into a drive which is a reading device equipped with a turntable and a head. Which disk is stored in which slot is stored in the table.

[0003]

However, if the order in which the slots are accommodated is changed or a different disk is exchanged during maintenance of the clerk,
The stored contents of the table and the actually stored discs do not match. Therefore, it is conceivable to load all the disks into the drive and confirm the ID every time the staff member performs maintenance. However, in the case of a DVD changer, it takes about 30 seconds to confirm the ID of one disc, and 30 to 50 minutes are required to confirm the ID of 100 discs. .

An object of the present invention is to provide a medium reproducing apparatus capable of checking the ID of each medium while performing a normal reproducing operation.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a plurality of slots for accommodating a medium in which individual identification information is written,
Storage means for storing, for each slot, a confirmation flag indicating that the identification information of the contained medium and the identification information has been confirmed;
When the reproducing means takes out the medium from the slot and reads the content, and when the reproducing means takes out the medium from the slot, it judges whether or not the confirmation flag of the slot is set, and if the confirmation flag is not set, the medium is read. determine the storage unit reads the identification information matches the identification information stored, to execute the reading of the contents After setting the confirmation flag in the case of matching, non-matching field
If this is the case, read the medium that is a substitute for the medium.
If the confirmation flag is set, the control means for executing the reading of the content as it is is provided. The present invention is the above-mentioned invention, wherein the control means is
Is the identification information of the medium taken out from the slot by the reproducing means.
However, if it does not match the identification information stored in the storage means,
When the error occurs, the fact that an error has occurred is output. This
In the above invention, the storage means is
Error indicating that a discrepancy has occurred in the identification information of the media
The flag is stored for each slot, and the control means
Is the identification information of the medium taken out from the slot by the reproducing means.
However, if it does not match the identification information stored in the storage means,
The error flag for that slot.
To collect. This invention is the same as the above invention,
The storage of media in and out of each slot is temporary.
Each slot, it will reset the confirmation flag for each slot.
Media and re-insert the media in and out of each slot.
Once banned, it will be newly added to the empty slot.
The media, remove the media, read the identification information of the media, and identify
After the information is stored in the storage means, the confirmation flag of the slot is
It is characterized by setting a group.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A karaoke apparatus which is an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of the karaoke apparatus. FIG. 2 is a structural diagram of a DVD reproducing apparatus of the karaoke apparatus.

The karaoke device displays the background image and the lyrics telop on the monitor 6 in parallel with the performance of the song. The lyrics telop is a pattern in which the character code included in the music data is developed. The background image is the DVD playback device 4
A moving image recorded on a DVD (hereinafter, also referred to as a disc) stored in the DVD is reproduced and used.

The DVD changer 31 of the DVD reproducing device 4
Stores a number of DVDs with recorded images,
The background image during karaoke performance is selected from the stored DVDs in accordance with the song. DVD changer 3
The first DVD stocker 32 has 100 slots (slot numbers 00 to 99) and can store up to 100 discs. 100 discs are not stored at the time of shipment of the device, and are sequentially added by an attendant. The discs are stored in numerical order from the slot number 00, and the DVD changer 31 recognizes the number of stored discs at the last slot number in which the disc is stored.

In FIG. 1, a CPU 10 for controlling the entire karaoke apparatus includes a ROM 11, a RAM 12, a hard disk 17, a communication control section 16, a remote control receiving section 13, an operating section 14, a display section 15, a graphic circuit 18, a video mixer 19, Karaoke performance section 20, 21 and DVD
The playback device 4 is connected. The DVD playback device 4
As shown in FIG. 2, a single drive 30 in which one DVD is preset and a DVD changer 31 capable of accommodating a maximum of 100 DVDs and capable of reproducing images by two drives are provided.

The ROM 11 stores a program for starting the karaoke apparatus. The song data for playing a karaoke song is the single drive 3 mentioned above.
DVD and hard disk 17 set to 0
Most of the songs are stored in the DVD changer 31.
Further, the hard disk 17 is also set with a video designation table for designating a background video corresponding to the music data, a storage disc table, and a final slot number storage area. The storage disc table is a DVD changer 31.
It is a table that stores which contents of disks are stored in each slot of the (stocker 32).

The hard disk 17 also stores a system program, a karaoke performance program, a loader program, character pattern data, and the like. The system program is a program that controls the basic operation of this device, and is a RAM when the karaoke device is activated.
12 is read. The karaoke performance program is a program for controlling the karaoke performance units 20 and 21 based on the music data. The loader is a program for downloading music data and video data for background video from the distribution center. The character pattern data is data for expanding the text information such as lyrics and song names given as code information into a character pattern.

In addition to the area for reading the program, the RAM 12 is set with an execution data storage area for reading out the music data currently being played and the music data to be played next.

The karaoke performance sections 20 and 21 are respectively provided with a sound source LSI and the like and can separately perform the karaoke music. In order to start playing a karaoke piece, preparation processing such as setup of a sound source LSI is required, and this processing requires about 10 seconds. In order to eliminate this waiting time, two systems of karaoke performance units are provided so that while one system is playing a karaoke song, the other system concurrently executes the preparation process for the next song. This enables a continuous performance with almost no blank time between songs.

The karaoke performance sound generated by the karaoke performance units 20 and 21 is input to the control amplifier 2. Control amplifier 2 uses this karaoke performance sound and microphone 7
The singing sound input from is mixed and output from the speaker 5.

The communication control unit 16 is a controller for communicating with a distribution center via a communication line and downloading music data and the like. The communication control unit 16 has a built-in DMA circuit and can directly write the downloaded music data or video designation file to the hard disk 17 without going through the CPU 10.

The remote controller receiver 13 receives the infrared signal sent from the remote controller 8 and restores the data. The remote controller 8 is provided with a plurality of key switches such as a ten key for inputting a music number and a set key for setting a music number. When the user operates these key switches, the remote controller 8 transmits an infrared code signal corresponding to the operated key switch. The remote control receiver 13 receives the infrared code signal, restores it to data, and
Input in U10. Based on this data, the CPU 10 executes various processes such as karaoke song reservation and key change. The operation unit 14 is provided on the front panel of the main body of the karaoke apparatus and has the same key switch as the remote controller 8. The display unit 15 is also provided on the front panel of the main body of the karaoke apparatus like the operation unit 14, and includes an LED matrix display for displaying the number of the currently playing song, the number of reserved songs, and the like.

On the other hand, the graphic circuit 18 has a VRAM and generates a video signal in which a character pattern of lyrics is developed. The lyrics are developed into character patterns by searching the character pattern database stored in the hard disk 17 based on the lyrics display data of the music data. The video signal of this character pattern is input to the video mixer 19 as a lyrics telop. DV for the video mixer 19
A background image is input from the D playback device 4, and a lyrics telop is superimposed and synthesized on the background image to monitor 6.
To display.

The DVD reproducing device 4 comprises the single drive 30 and the DVD changer 31, as described above. The single drive 30 is used exclusively for reading music data. The DVD changer 31 is a stocker 3 that can store up to 100 DVDs as shown in FIG.
2. Drive the DVD stored in the stocker 32 into the drive 0
Alternatively, the change mechanism 33 to be set in the drive 1 and the drive 0 (3 to read the data of the set DVD
4), drive 1 (35), drive 0, MPEG decoder 0 (36) for decoding the MPEG compressed video data read by the drive 1, MPEG decoder 1
(37) and a control unit 3 that controls these functional units
8. A door sensor 39 for detecting that the door of the stocker 32 is opened is provided.

The change mechanism 33 has a function of setting a disk stored in the stocker 32 in a drive and returning a disk set in the drive to the stocker. Although the change mechanism 33, the drive 0, and the drive 1 cannot perform the return / set processing at the same time, the return / set processing can be performed in order of each drive.

When the CPU 10 of the karaoke apparatus main body 1 determines which background image is to be reproduced at the time of karaoke performance,
The storing disk table is searched to find in which slot the disk in which the video is recorded is stored, and the DVD reproducing apparatus 4 is instructed to reproduce the disk by designating the slot number. Disk media such as DVD and CD-ROM have their disk ID (for example, Volume
e Descriptor) is recorded in the first track, and when the disc is loaded into the drive and this ID is read, it can be determined whether the loaded disc is correct or incorrect.

FIG. 3 is a view showing the storage disk table. The disc check operation of this karaoke apparatus will be described with reference to FIG. In the storage disk table, the IDs of the disks stored, the confirmation flags, and the error flags are set corresponding to the slot numbers 00 to 99 of the stocker 32. The confirmation flag is a flag indicating that the disc ID has been confirmed. The error flag is a flag indicating that the disc ID does not match the one actually stored.

An ID is first registered in the storage disk table by checking all disks. The all-disk check is a work in which the disks are loaded in order from the number 00 to the slot of the final number in which the disks are stored, their IDs are read and registered in the table. This operation is executed by the DVD changer 31 according to the instruction from the CPU 10. At this time, since all the IDs are those actually read by loading the disc, the confirmation flag of each slot is set.

The confirmation flag is reset when the door sensor 39 detects the door open in a state where both the karaoke apparatus 1 and the DVD reproducing apparatus 4 are powered on. The door of the stocker 32 cannot be opened unless both the karaoke apparatus 1 and the DVD reproducing apparatus 4 are powered on, and discs are not replaced unless the control section can check. It is like this.

If the door can be opened even when the karaoke apparatus is turned off or when the karaoke apparatus is turned on,
The confirmation flag may be reset even when the power source of the D playback device 4 is turned off.

When the door sensor 39 detects that the door is closed, a differential disc check is executed. The differential disk check is to scan the stocker 32 to detect the last slot in which the disk is stored, and if this slot number is ahead of the last slot so far, it is determined that an additional disk has been stored. Then, only the new disk of the difference is loaded into the drive, the ID is read and registered in the storage disk table. And
This time, since the ID is actually read out and registered only for the disk of this difference, only the confirmation flag corresponding to the slot of this disk is set. The confirmation flags corresponding to the other slots remain reset. However, unless the staff mistakenly replaces the disk or replaces the slot, the ID of the disk already stored and the contents of the table do not become inconsistent.

Then, the normal operation state is entered, and the karaoke apparatus accepts the request as usual and plays the karaoke piece. In parallel with this performance, a predetermined disc is loaded into the drive and the background image is reproduced. The karaoke device main body 1 designates the disc to be loaded to the DVD reproducing device 4 by the slot number. At this time, if the confirmation flag of the designated slot remains reset, the ID is verified when the disc is loaded into the drive. This collation may be performed by the CPU 10 or the control unit 38 of the DVD reproducing device 4. If the results of the verification match, then CP
Playback is started from the position designated by U10. If the IDs do not match, the karaoke device executes error handling processing and sets an error flag corresponding to this slot in the storage disk table.

The error handling process is a process of playing back an image recorded on a disc that is erroneously loaded as a substitute image, or displaying the fact that the song cannot be played due to an error and stopping the performance of this song. Then, do not use this error disk thereafter, and if, for example, the video of this disk is specified, use another disk that records a similar video to perform normal karaoke performance. continue. Then, when the time zone of the normal operation ends, it requests that all disk checks be redone.

4 to 6 are flowcharts showing the operation of the karaoke apparatus.

FIG. 4 is a flow chart showing the all-disk check operation. This all-disc check is performed at the first time when the karaoke apparatus is installed, or when an error occurs in the storage disc table.

First, all areas of the storage disk table are reset (s1). Then, 00 is set to the pointer i indicating the slot number (s2). And
The disc stored in the slot designated by i is loaded into the drive (s3), and the ID of this disc is read (s4). The read ID is registered in the area of the slot number i of the storage disk table (s5).
Then, the confirmation flag of this slot is set (s
6). This completes the confirmation of one slot. This process takes about 30 seconds.

Next, 1 is added to the pointer i (s7),
It is confirmed whether there is a disc by accessing this slot (s8). If there is a disc, the operations of s3 to s6 are executed. If there is no disk, it is determined that the disk has ended in the previous slot, i-1 is stored as the final slot number in the final slot number storage area (s9), and the operation ends.

FIG. 5 is a flow chart showing the differential disk check operation. Since this operation is executed when the door open is detected, nothing is done when the door open is not detected (s11). When the door open is detected (s11), all the confirmation flags of the storage disk table are reset (s12). Even in this case, the disk ID stored in the table is held without being cleared. Also, if there is an error flag that has been set, it remains set. Then, it waits until the door close is detected (s13).

When the door close is detected, the change mechanism accesses each slot to scan the final slot in which the disc is stored (s14). It is determined whether the number of the last slot of this time detected by the scan is larger than the number of the last slot of the previous time stored in the hard disk 17 (s15). If the number has not increased, there is no additional disk and the operation ends.

If the final slot number is increasing, the value of (previous last slot number + 1) is set to the slot pointer i (s16). That is, it is set at the beginning of the additionally stored disc. Then, this disc is loaded into the drive (s18), and the ID of this disc is read (s18). The read ID is registered in the area of the slot number i of the storage disk table (s19). Then, the confirmation flag of this slot is set (s20). Then, it is determined whether or not the value of i matches the last slot number of this time (s21). If the value of i is smaller than the last slot number this time, 1 is added to i
Is added (s22) and the process returns to s17. If the value of i matches the last slot number of this time, all new disks have been checked, so this last slot number is stored in the last slot number storage area (s23), and the operation ends. To do.

FIG. 6 is a flow chart showing the disk read operation. When the disc to read is determined (s31), such as when a karaoke piece is requested and a background image is selected (s31), the storage disc table is searched by the disc ID, and the slot number storing this disc is read (s32). Then, it is determined whether the error flag corresponding to this slot is set (s3
3). If the error flag is set, the discs stored in this slot have different IDs, so a corresponding process such as selecting an alternative video (s
Proceed to 42).

When the error flag is reset, normal processing is executed. The disc is loaded from the searched slot (s34). Then, the confirmation flag of this slot is checked (s35), and if the confirmation flag is set, the reading from the predetermined position of this disk is started (s39).

When the confirmation flag is reset,
The ID of this disc is read (s36). This ID is collated with the ID stored in the table (s3
6). If they match as a result of collation (s37), the confirmation flag of this slot is set (s38), and reading from a predetermined position is started (s39). If the read disk ID and the disk ID stored in the table
If they do not match, there is a problem such as the clerk mistakenly replacing them, so the error flag of this slot is set (s40), and error handling processing is executed (s41). The error handling process is a process of reproducing an alternative video and continuing the karaoke performance.

If even one error flag is set, an alert to that effect is displayed at a predetermined timing such as at the end of the business hours.

In the above embodiment, the karaoke apparatus main body 1 is provided with the storage disk table, and the DVD reproducing apparatus 4 executes the disk check according to the instruction of the main body 1, but the DVD reproducing apparatus 4 is provided with the storage disk table. The disc check may be performed by using the unique function.

[0040]

As described above, according to the present invention, the DVD
It is possible to confirm the medium in the slot without checking all the media, which takes a long time, by checking whether or not the medium is normally stored at the time of reproduction.

[Brief description of drawings]

FIG. 1 is a block diagram of a karaoke device that is an embodiment of the present invention.

FIG. 2 is a block diagram of a DVD reproducing device of the karaoke device.

FIG. 3 is a view showing a storage disc table set in the karaoke apparatus.

FIG. 4 is a flowchart showing the operation of the karaoke apparatus.

FIG. 5 is a flowchart showing the operation of the karaoke apparatus.

FIG. 6 is a flowchart showing the operation of the karaoke apparatus.

[Explanation of symbols]

1 ... Karaoke device main body, 4 ... DVD playback device, 10 ... C
PU, 12 ... RAM, 17 ... Hard disk, 31 ... D
VD changer, 32 ... Stocker, 33 ... Change mechanism, 34, 35 ... Drive, 38 ... Control unit, 39 ... Door sensor

Claims (4)

(57) [Claims] 1. A plurality of slots for accommodating a medium in which individual identification information is written, and storage means for storing identification information of the accommodated medium and a confirmation flag indicating that the identification information has been confirmed for each slot. When the reproducing means takes out the medium from the slot and reads the contents, and when the reproducing means takes out the medium from the slot, it judges whether or not the confirmation flag of the slot is set, and if the confirmation flag is not set, the medium is read. The identification information is read to determine whether it matches the identification information stored in the storage means. If they match, the confirmation flag is set and then the content is read out. If they do not match, the medium is replaced. Read out the medium
And a control means for causing the contents to be read as they are if the confirmation flag is set. 2. The control means is a reproducing means is a slot.
The identification information of the medium taken out from
Outputs that an error has occurred when it does not match the identification information
The medium reproducing device according to claim 1. 3. The storage means is for identifying a medium stored therein.
An error flag indicating that there is a discrepancy in different information
It is stored for each lot, and the control means uses the medium taken out from the slot by the reproducing means.
The body identification information matches the identification information stored in the storage means.
If not, set the error flag for that slot.
Medium reproducing apparatus according to claim 1 or claim 2 that. 4. The control means is capable of temporarily storing / removing a medium into / from each slot.
Reset the confirmation flag for each slot when enabled
However, the storage / removal of media into / from each slot is again prohibited.
The newly stored media in the empty slot,
Eject and read the identification information of the medium, and write the identification information.
After storing in the memory, set the confirmation flag of the slot.
The medium according to claim 1, claim 2 or claim 3
Playback device.