JPH07130077A - Plural request response type device for supplying information signal using disk player provided with function of simultaneously reproducing plural recording information signals - Google Patents

Abstract

PURPOSE:To reduce a waiting time by issuing a plural simultaneous reproduction command to disk players according to disk loading states in respective disk players in response to the reproducing output command when a reproducing output request command is issued. CONSTITUTION:A selector 30 repeats respective input signals to video monitors and speakers in respective rooms according to a selection/repeat control signal from a system controller 18. A player 21 processes a request from the room A giving priority, and reproduces a request music by using a storage area Da at that time. The player 22 processes the request from the room B giving priority, and uses the recording area Db. The player 23 processes a request from the room C giving priority, and uses the storage area Dc. When the requests are superposed on the same disk, the player 21 uses the storage area except the area Da, and the player 22 uses the storage area except the area Db, and the player 23 uses the storage area except the area Dc, and they perform virtual multi-pickup reproduction, and they cope with the request from another room with low priority.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiple request response type information signal supply apparatus, and more particularly to a multiple request response type information signal supply apparatus using a disc player for reproducing recorded information on a disc.

[0002]

2. Description of the Related Art In order to enjoy so-called karaoke in each room, a video monitor and an audio output speaker are provided in each room, the recorded information of a karaoke disk is reproduced by a disk player, and an image and a video are reproduced by the video monitor and the speaker. There is a system that makes the sound output and makes the image and the sound effect interesting. According to this system, the user selects a desired song, and the disc player plays the selected song in response to this.

In such a system, there is a system as shown in FIG. 1 in which a player and a disc unit are independently arranged in each room in order to play the music in a plurality of rooms at the same time and without waiting for selection of the music. In FIG. 1, a room A includes a disc player 11 which includes a controller for performing various controls and reproduces recorded information for each disc.
A, a disc unit 12A in which a large number of karaoke discs are stored, and a changer 13A which conveys one of the discs in the disc unit 12A to a turntable of the player 11A in response to a command from the player 11A. A video monitor 14A and speakers 15RA and 15LA for outputting information of a video signal and an audio signal reproduced by the player 11A are installed. The player 11A also includes a receiver unit that receives various performance commands by a commander 16A that is a portable remote controller, and operates according to the received performance commands.

In rooms B and C, the same system as the karaoke system in room A is installed. Therefore, since the player, the disc unit, and the changer operate independently for each room, the user in each room can play the music at the same time and without waiting time after selecting the music. However, since the player, the disc unit, and the changer are installed in each room, there is a disadvantage in that the space of the room is reduced and the cost of the entire system is reduced.

On the other hand, in order to eliminate such a point, N players are installed outside the room for N rooms, and M disk units (M <N) are used to control the performance of each room outside the room. There is a system as shown in FIG. 2, parts having the same functions as those in FIG. 1 are designated by the same reference numerals. In the room A, only the video monitor 14A, the speakers 15RA and 15LA, and the receiver 17A that receives the command issued by the commander 16 are installed. The command issued by the commander 16A is output to the outside of the room via the receiver 17A and is input to the system controller 18. Similarly, in the rooms B and C, only the video monitor, the speaker, and the receiver are installed, and the command issued by the commanders 16B and 16C is output to the outside of the room and becomes the input of the system controller 18.

The system controller 18 is a host CP.
A player 11A 'having a U18a and outputting a video signal and an audio signal to the video monitor 14A and the speakers 15RA and 15LA in the room A, and a video signal to the video monitor 14B and the speakers 15RB and 15LB in the room B and A player 11B 'that outputs an audio signal and a player 11C' that outputs a video signal and an audio signal to the video monitor 14C and the speakers 15RC and 15LC in the room C are operated in accordance with a command issued from each room. Control. The system controller 18 also sets two disc units 12X and 12Y installed outside the unit and one of the discs stored in these disc units to the players 11A ′, 1A.
The changer 13X which is transported to each of the turntables 1B 'and 11C' is operated and controlled in accordance with a command issued from each room. The disk units 12X and 12Y are shown in FIG.
The same disks as the disk unit 12A in FIG.

In this system, three players are installed outside the room for three rooms, the number of disk units is reduced to two, and the performance control system corresponding to the command from each room is provided outside the room. The controller 18 carries out collectively. However, at the same time and on the same disc, the requested songs of users in each room overlap,
Moreover, when the number of requests exceeds the number M of disk units, the order of requests is changed or a considerable waiting time until the start of performance is made in a room where the performance cannot be performed. Therefore, the user in each room may not be able to play the selected song even after a while, which is not enough to bring about the enjoyment of pleasant video and sound effects.

As described above, in the multi-request response type information signal supplying apparatus using the disc player, in order to reduce the number of disc units M with respect to the number N of rooms without causing a waiting time for the user, simply use the outdoor unit. However, there is a limit in the method of centrally managing the requests from the users in each room, and there is a problem particularly when N is small.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to reduce the waiting time to the user and reduce the number of disk units. An object of the present invention is to provide a multi-request response type information signal supply device.

[0010]

According to the plural request response type information signal supplying apparatus of the present invention, the information recorded on the information recording disk in which the information data is recorded in every predetermined unit is set at a predetermined standard rate of 2 by one information reading point. A data fetching operation of reading at a reading rate of more than twice and writing it in one storage area or another storage area of the memory, and every time a predetermined amount of data is read, the information reading point is moved from the position of 1 in the information data to another position. In parallel with the read information switching operation of switching the storage area to be written in the memory while moving to the memory cell, and reading from each of the storage areas of the memory at the predetermined standard rate, thereby responding to a plurality of simultaneous reproduction commands. Multiple request response type using multiple disc players that simultaneously reproduce multiple specified specified units of information data A signal signal supply device, which is a disc mounting means for mounting an information recording disc to be reproduced in each of the disc players, and relays each of the reproduction output signals of the disc player to a plurality of supply destinations in response to a relay control signal. Relay means, a command means for issuing a reproduction output request command corresponding to the supply destination, and a plurality of simultaneous reproduction commands for the disk player in response to the reproduction output request command in accordance with the disk mounting state in each of the disk players. And a control means for issuing the relay control signal to the relay means so as to relay the reproduction output signal of the disc player to which the plural simultaneous reproduction command is issued to the supply destination corresponding to the reproduction output command. I am trying.

[0011]

In the multi-request response type information signal supply device according to the present invention, an information recording disc to be reproduced is mounted on each of the disc players having the simultaneous reproduction function of plural recording information signals, and the disc player of the disc player responds to the relay control signal. Each of the reproduction output signals is relayed to a plurality of destinations. When a reproduction output request command corresponding to the supply destination is issued, in response to this, a plurality of simultaneous reproduction commands are issued to the disc player according to the disc mounting state in each of the disc players, and a plurality of simultaneous reproduction commands are issued. The reproduction output signal of the disc player is relayed to the supply destination corresponding to the reproduction output command.

[0012]

The present invention will be described in detail below with reference to the drawings. FIG. 3 is a block diagram showing the configuration of a disc player used in the embodiment of the present invention. In FIG. 3, the disc 1 is, for example, a CD / graphics disc, and audio signals and video signals are recorded in a predetermined format. The disc 1 is rotated by a spindle motor 3 driven by a spindle control circuit 2, and the recording information is optically read by a pickup 4. The pickup 4 supplies an RF (high frequency) signal, which is read information from the disc 1, to the data extraction circuit 6 via the RF amplifier 5. The data extraction circuit 6 extracts predetermined data in the supplied RF signal, and CD-DA demodulates / decodes the extracted data (read data).
The data is transferred to the correction circuit 7 and the graphics decoder 71.
The CD-DA demodulation / correction circuit 7 performs predetermined demodulation and correction processing of the transferred data, and D-processes the processed data.
Transfer to the / A converter 8. Graphics decoder 7
1 demodulates the data and outputs a processed video signal. The D / A converter 8 converts the transferred data into an analog signal and outputs an L channel and R channel audio signal. Pickup 4 is disk 1
Focus control, tracking control, and slider control are performed in cooperation with the pickup control circuit 9 and the CPU 10 in order to follow the predetermined track above and read the recorded information accurately. The CPU 10 also cooperates with the spindle control circuit 2 as a system controller of the disc player to drive and control the spindle motor 3.

The features of such a player are as follows.
That is, the disk 1 has a spindle control circuit 2 and a CP.
The spindle motor 3 is driven and controlled in cooperation with U10 so that the spindle motor 3 is rotationally driven at a rotational speed twice or more the normal rotational speed. From the disk 1 rotated at high speed in this way,
Data D1 or second data D2 of the pickup 4
The data read by the reading system including the RF amplifier 5 and the data extraction circuit 6, and the read data is transferred to the memory control circuit 11. The memory control circuit 11 receives the data to be transferred and receives the received data from the CPU 10
The first data is transferred to the first memory 12 by cooperative control with
Then, the second data is written in the second memory 13. The first and second memories 12 and 13 are, for example, so-called FIFs.
It is composed of an O (First-In First-Out) type memory, and when addresses are continuously connected from a minimum address to a maximum address and reading and writing are performed at the same rate, the read address and the write address Is a sequence that proceeds from the minimum address to the maximum address in sequence, and then transitions to the minimum address after the maximum address. The memory control circuit 11 also controls reading of the data written in the first memory 12 and the second memory 13 in cooperation with the CPU 10. The detailed operation of the memory control circuit 11 will be described later.

The data (D1) of the first memory 12 read by the memory control circuit 11 is transferred to the CD-DA demodulation / correction circuit 7 and the graphics decoder 71, and the second data
The data (D2) in the memory 13 is transferred to the CD-DA demodulation / correction circuit 7A and the graphics decoder 71A.
The CD-DA demodulation / correction circuits 7 and 7A perform predetermined demodulation and correction of the transferred data, and transfer the processed data to the D / A converters 8 and 8A.
The D / A converters 8 and 8A respectively convert the transferred data into analog signals and output L channel and R channel audio signals. The graphics decoders 71 and 71A convert the transferred data into video signals and output the video signals as V1 and V2.

FIGS. 4 to 8 are flow charts for explaining the reproduction control operation of the CPU 10 in the disc player having such a structure. Further, according to the flow of FIGS. 4 to 8, the first and second memories 12, 13 are
Is read and written as shown in the time chart of FIG. 9, FIG. 9A shows the write address ADR1W of the first memory 12 with respect to the elapsed time t, and FIG. 9B shows the elapsed time t.
For the read address ADR1R of the first memory 12 corresponding to the read address ADR2R of the second memory 13 for the elapsed time t, and for the read address ADR2R of the second memory 13 for the elapsed time t. Shows,
max indicates the maximum address, and min indicates the minimum address for each address. The operation of the disc player will be described with reference to FIGS.

In FIG. 4, first, after the player is powered on from an operation system (not shown) to enter the reproduction mode, when the CPU 10 confirms that the disc 1 is loaded, the CPU 10 switches from the main routine (not shown) to this routine. Then, the spindle motor 3 is moved together with the spindle control circuit 2 to drive the spindle motor 3 to rotate at a speed four times the normal speed (step S1). Next, the CPU 10 transfers the pickup 4 to the lead-in area of the disc 1 by using the pickup control circuit 9, and at the same time, the TOC (Table Of Content
s) Read information (step S2). And CPU1
0 determines whether or not a reproduction command is issued by an operation system (not shown) (step S3). In step S3, the CPU 10 shifts to a music specifying routine for specifying a music to be reproduced by the operation system only when a reproduction command is issued (step S4). In step S4, when the track number n1 is designated as the first song and the track number n2 is designated as the second song, the CPU
10 is the track number n1 in the register SEADR1
Store the beginning address TNn1 of the
The beginning address TNn2 of the track number n2 is stored in 2. When the song designation in step S4 is completed, the first and second memories 12 and 13 are cleared, and at the same time, flags CFLG1 and CFL indicating the clear state of each memory are cleared.
G2 is set to "0" (step S5).

The above is the initial setting operation before the start of reproduction.
When the initial setting operation is completed at time t0 as shown in FIG. 9, the CPU 10 proceeds to step S6 of FIG. 5 and causes the pickup 4 and the pickup control circuit 9 to search for the address stored in the register SEADR1. Then, the CPU 10 proceeds to step S7, determines whether or not the search is completed, and determines time t1.
When the search is completed in step S8, the process proceeds to step S8, and it is determined whether the clear flag CFLG1 is "0". At this time, since the first memory 12 has just been cleared in the previous step S5, the flag CFLG1
Is "0", and therefore, the process proceeds to step S9, and the writing state of the first memory 12 is determined in cooperation with the memory control circuit 11. While the write address of the first memory 12 has not reached the maximum address, the process proceeds to step S10 and the read data is written in the first memory 12. At this time, since the spindle motor 3 is rotating at a speed four times higher than the normal speed in the step S1, the recorded information on the disk 1 is also read at a speed four times the normal speed and written in the first memory 12. Become. Then, the CPU 10 performs step S11.
Then, it is determined whether or not the first music piece is reproduced, and only when it is reproduced, the process proceeds to step S12 and the memory control circuit 1
The read control of the first memory 12 is performed in cooperation with 1 and the process proceeds to step S8 again. The read control in step S12 is performed at a normal transfer rate (1 × speed). If the first music piece is not reproduced in step S11, the read control of the first memory 12 is not performed, and the process immediately proceeds to step S8.

By repeating the above steps S8 to S12, the read / write control from time t1 to time t2 in FIG. 9 is performed. In FIG. 9, the time from time t0 to time t1 is the search time Ts.
(For example, Ts = 0.5 sec), W11 in FIG. 10A indicates that the write control is performed at the quadruple rate in the first memory 12, and FIG. R11 in the figure indicates that the first memory 12 is controlled to read at the normal rate. As a result, the change in the write address ADR1W is changed to the read address ADR.
You can see that it is about 4 times larger than that of 1R. Further, the first and second memories here are assumed to have a storage capacity of 8 sec at a normal speed, that is, a normal speed. Therefore, when writing in such a memory at a quadruple rate, it takes only 2 sec to update the data at all addresses. Therefore, it can be seen that the time from time t1 to t2 is 2 sec.

At time t2, the CPU 10 shifts to step S9 during the above-described repeating flow, and the first memory 12
When it is determined that the write address of has reached the maximum address max, the CPU 10 proceeds to step S13 of FIG. 6 and sets the clear flag CFLG1 to “1”. After that, the process proceeds to step S14, and an address (information for identifying the reading position of the pickup 4 on the disc 1 at that time, from the subcode in the read data at that time,
For example, a time code) is stored in the register STREG1. Then, the CPU 10 proceeds to step S15 to stop the write control of the first memory 12 via the memory control circuit 11, and proceeds to step S16 to register STRE.
The contents of G2 are stored in register SEADR2.

Next, the CPU 10 executes step S17 in FIG.
Then, the pickup 4 and the pickup control circuit 9 are searched for the address stored in the register SEADR2. Then, the CPU 10 executes step S1.
8, it is determined whether or not the search is completed, and when the search is completed at time t3, step S1
In step 9, it is determined whether the clear flag CFLG2 is "0". At this time, since the second memory 13 has just been cleared in the previous step S5, the flag CFLG2 is "0", and therefore the process proceeds to step S20, and the second memory 13 cooperates with the memory control circuit 11.
The write state of is determined. While the write address of the second memory 13 has not reached the maximum address, the process proceeds to step S21 and the read data is written in the second memory 13. At this time as well, the spindle motor 3 is rotated at a speed four times higher than the normal speed in step S1, so the recorded information on the disk 1 is also read at a speed four times the normal speed and the second memory 13 is also read.
Will be written in. Then, the CPU 10 proceeds to step S22 to determine whether or not to reproduce the second tune, and only when reproducing, proceeds to step S23 and cooperates with the memory control circuit 11 to read the second memory 13. The control is performed, and the process proceeds to step S19 again. The read control in step S23 is also performed at the normal transfer rate (1 × speed) as in step S12. In step S22, if the second music is not reproduced, the read control of the second memory 13 is not performed, and the process immediately proceeds to step S19.

By repeating the flow of steps S19 to S23, the read / write control from time t3 to time t4 in FIG. 9 is performed. In FIG. 9, the time from time t2 to time t3 is the search time Ts.
(For example, Ts = 0.5 sec), and W21 in FIG. 7C indicates that the write control is performed at the quadruple rate in the second memory 13, and FIG. R21 in the figure indicates that the reading control is performed in the second memory 13 at the normal rate. From this, it can be seen that the change of the write address ADR2W is about four times larger than that of the read address ADR2R, as in the first memory 12.

At time t4, the CPU 10 shifts to step S20 during the above repeating flow, and the second memory 1
When it is determined that the write address of 3 has reached the maximum address max, the CPU 10 proceeds to step S24 of FIG. 8 and sets the clear flag CFLG2 to "1". After that, the process proceeds to step S25, and the address is registered in the register STREG2 from the subcode in the read data at that time.
To store. Then, the CPU 10 proceeds to step S26, stops the write control of the second memory 13 via the memory control circuit 11, and proceeds to step S27 to register S.
The contents of TREG1 are stored in register SEADR1.
Next, the CPU 10 shifts to step S6 of FIG. 5 and causes the pickup 4 and the pickup control circuit 9 to search for the address stored in the register SEADR1. Then, the CPU 10 proceeds to step S7, determines whether or not the search is completed, and when the search is completed at time t5, the CPU 10 proceeds to step S8 and determines whether or not the clear flag CFLG1 is "0". To do. At this time, since the clear flag CFLG1 has been set to "1" in the previous step S13, the process shifts to step S28 and the writing state of the first memory 12 is determined in cooperation with the memory control circuit 11. In step S28, if the write address and the read address of the first memory 12 do not match, the process proceeds to step S10, and the read data is written in the first memory 12 at the quadruple rate. And CPU1
If 0, the process proceeds to step S11 to determine whether or not to reproduce the first tune, and only when reproducing, the process proceeds to step S12 to cooperate with the memory control circuit 11 to perform the first tune at the normal rate.
The reading of the memory 12 is controlled, and the process proceeds to step S8 again. If the first music piece is not reproduced in step S11, the read control of the first memory 12 is not performed, and the process immediately proceeds to step S8.

By repeating the above steps S8 and S28 and steps S10 to S12, the read / write control from time t5 to time t6 in FIG. 9 is performed. In FIG. 9, the time from time t4 to time t5 indicates the search time Ts, and W12 in FIG. 9 (a) indicates that the writing control at the quadruple rate is performed in the first memory 12. Therefore, R12 in FIG. 7B indicates that the read control is performed in the first memory 12 at the normal rate. Further, it is shown that the write address and the read address of the first memory 12 match at A1 at time t6.

At the time t6, the CPU 10 shifts to the step S28 during the above repeating flow, and the first memory 1
When it is determined that the write address and the read address of No. 2 are the same, the CPU 10 causes the CPU 10 to execute step S14 in FIG.
Then, the address is stored in the register STREG1 from the subcode in the read data at that time. Then, the CPU 10 proceeds to step S15 to stop the write control of the first memory 12 via the memory control circuit 11,
In step S16, the contents of the register STREG2 are stored in the register SEADR2. Next CPU 10
Shifts to step S17 in FIG.
The address stored in R2 is searched by the pickup 4 and the pickup control circuit 9. And C
The PU 10 proceeds to step S18 to determine whether or not the search is completed. When the search is completed at time t7, the PU 10 proceeds to step S19 and clear flag CF.
It is determined whether LG2 is "0". At this time, since the clear flag CFLG2 has been set to "1" in the previous step S24, the process proceeds to step S29, and the writing state of the second memory 13 is determined in cooperation with the memory control circuit 11. In step S29, the second memory 13
If the write address and the read address do not match, the process proceeds to step S21, and the read data is written in the second memory 13 at the quadruple rate. Then, the CPU 10
In step S22, it is determined whether or not to reproduce the second tune, and only in the case of reproduction, the process proceeds to step S23 in which the reading control of the second memory 13 is performed at the normal rate in cooperation with the memory control circuit 11. Then, the process proceeds to step S19 again.
In step S22, if the second music is not reproduced, the read control of the second memory 13 is not performed, and immediately step S22 is performed.
Move to 19.

By repeating the flow of steps S19 and S29 and steps S21 to S23, the read / write control from time t7 to time t8 in FIG. 9 is performed. In FIG. 9, time t6 to time t7
The time up to shows the search time Ts, as shown in FIG.
W22 in the figure indicates that the write control is performed at the quadruple rate in the second memory 13, and R22 in FIG. It indicates that Also, at time t8
Shows that the write address and the read address of the second memory 13 match at A2.

Thus, the CPU 10 alternately repeats the read / write control at the times t4 to t6 and the read / write control at the times t6 to t8 as described above even after the time t8. The repeated flow in FIGS. 4 to 8 is stopped by interrupting the flow and shifting to the main flow (not shown).

As described above, in this player, the rate of the data constantly read from the disc 1 is set to four times the normal rate, and each time the first or second memory is filled with unread write data (so-called full state). The read data is switched, and the read data is distributed and written in the vacant first or second memory. In the first and second memories, the read control is continuously performed at the normal rate, so that two pieces of recording information on the disc 1 can be recorded by a single pickup.
The reproduction can be performed while maintaining the normal reproduction speed.

That is, the basic operating principle of the player applied to the present invention is to increase the reading rate of the information recorded on the disc and to detect the position of the information detection point (and the disc rotation speed in the case of the CLV disc) in order to read a plurality of songs. )
Is controlled appropriately and each read data corresponding to the music is written in the memory at the corresponding rate and is read at the standard rate, thereby simultaneously reproducing a plurality of music. Since such a multiple song simultaneous playback operation is as if playback is performed using a plurality of pickups, this operation will be referred to as virtual multiple pickup playback below.

On the other hand, the switching between the reading of the disk recording information and the writing of the memory is performed by the first or second switching as described above.
It does not have to be performed every time the memory is filled with the unread write data, and may be performed each time a sufficient write data amount is reached, as is clear in FIG.
In the same figure, (a) shows the switching of the loading modes of the data D1 and D2 from the disk and the mode of each of these modes, and "S1" is the data D1.
“S2” indicates an address search in D2, and “D2”
1 ”indicates data reading of data D1 and“ D2 ”indicates data reading of data D2. Corresponding to the mode mode, as shown in FIG. (The amount of data output) has changed, and the same figure (c)
As described above, the amount of remaining data in the second memory 13 changes.

In other words, when the first memory 12 increases the remaining data amount by the writing of the data D1 at a high rate after the search (S1) in the D1 fetching mode and reaches the predetermined remaining data amount Qd1, the data is written. The embedded control is stopped. During this D1 capture mode, only the read control is being executed in the second memory 13, so that the amount of remaining data decreases at the standard rate. When the write control of the first memory 12 is stopped, the mode shifts to the D2 fetch mode, and the second memory 13 writes the remaining data amount by the high rate writing of the data D2 after the search (S2) in the D2 fetch mode. Increased,
When the predetermined remaining data amount Qd2 is reached, the write control is stopped. During this D2 capture mode, the first memory 12
Only the read control is executed, so the amount of remaining data decreases at the standard rate. Such mode operation is alternately repeated.

According to this, each time the predetermined sufficient write data amount Qd1 or Qd2 is reached, the reading and the memory writing for one data are switched to the other one, and the remaining memory remains as in the above player. It can be seen that the switching does not have to be performed every time the data amount becomes maximum. The maximum amount of residual data in memory is Q
It is equivalent to a predetermined remaining data amount such as d1 and Qd2, and the reading and memory control in FIGS. 4 to 9 eventually switches the reading and the memory writing each time the reading and the memory writing of the predetermined amount of data. In that respect, it has the same technical idea as that of FIG.

Therefore, in other words, the operating principle of such a disc player is that the recording information of the information recording disc in which the information data such as video and audio is recorded for each predetermined unit (song) is determined by one pickup information reading point at a predetermined standard. Read at a reading rate that is more than twice the reading rate
Data acquisition operation to be written to the memory area or other memory area, and read information for switching the memory area to be written in the memory while moving the pickup information reading point from one position to another position in the information data each time a predetermined amount of data is read. While performing the switching operation in parallel, by reading from each of the storage areas of the memory at a predetermined standard rate that matches the information output system, a plurality of pieces of information data of a predetermined unit designated in response to a plurality of simultaneous reproduction commands are read. It leads to simultaneous playback.

It should be noted that the sufficient remaining data amounts Qd1 and Qd2 are set from the end of the acquisition mode of 1 to the data reading and the memory writing of the next acquisition mode (for example, at time t.
The amount of data that can be continuously read (from a to tb) (for example, the remaining data amount at time ta at which the remaining data amount is zero or does not reach the predetermined minimum remaining data amount Qd0 at time tb), and the disk recording information Read and memory write rate, memory read rate, etc.

In the above description, in order to make it easy to understand the structure and operation principle of the player to which the present invention is applied, the simultaneous reproduction of two songs is described in detail. For example, it is necessary to increase the data writing amount in the memory, increase the writing speed, or shorten the search time according to the number of songs.

For example, when performing simultaneous reproduction of three songs, FIG.
As described above, the number of storage areas and demodulation systems corresponding to each music piece is three, and in the flowcharts of FIGS.
Nn2 and TNn3 and registers SEA corresponding to these
DR1, SEADR2, SEADR3 and register ST
REG1, STREG2, STREG3 and clear flags CFLG1, CFLG2 corresponding to the three memories
The CFLG 3 and the CFLG 3 may be prepared, and the control may be expanded based on the operation principle of the virtual multi-pickup reproduction. In FIG. 11, the same parts as those in FIG. 3 are designated by the same reference numerals, and three music pieces, that is, information data Da and D for each predetermined unit as shown on the disk 1 in the figure.
The storage areas Da, Db, Dc for individually storing b, Dc (including the same unit information data) are the buffer RAM 2
Reserved at 0. Each of these storage areas has a function of FIFO (described above), and data is read from the oldest written order. As a demodulation system corresponding to each of the data, CD-DA demodulation / correction circuits 7, 7A, 7B and D / A converters 8, 8A, 8 are provided.
B and graphics decoders 71, 71A, 71B are prepared.

FIG. 12 shows a time chart having the same meaning as in FIG. 10 above in order to explain the operation of the virtual multiple pickup reproduction in the player of FIG.
In FIG. 12, (I) shows the switching of the loading modes of the data Da, Db, and Dc from the disk and the mode of each of these modes. “Sb” indicates an address search in the data Db which is started after the reading of the data Da from the disk and the writing of the memory is completed, and the search time is tsb [sec]. "S
Reference character c ″ denotes an address search in the data Dc which is started after the reading of the data Db from the disk and the writing of the memory is completed, and the search time is tsc [sec].
I am trying. “Sa” is the data D that is started after reading the data Dc from the disk and writing the memory.
The address search in a is shown, and the search time is tsa [sec]. Also, "Da", "D
“B” and “Dc” indicate data reading and memory writing of the data Da, Db, and Dc, respectively. Corresponding to the mode mode, the buffer RA as shown in FIG.
The amount of remaining data in the storage area Da of M20 changes.

That is, in the storage area Da, the amount of remaining data is increased to a predetermined remaining data amount Qd (tm) by the high-rate reading and memory writing of the data Da after the search (Sa) in the Da loading mode. When it reaches, the write control is stopped and the mode is changed to the Db capture mode. After the Db fetching mode, the Dc fetching mode is set, but during the both modes, only the read control is performed on the storage area Da, so that the amount of remaining data decreases at the standard rate. When the mode is changed to the Da acquisition mode again after the Dc acquisition mode, the storage area D
After a search (Sa), a starts writing the data Da at a high rate. Such mode operation is sequentially repeated.

With respect to the other storage areas as well, the disk reading and the memory writing control are performed until the predetermined remaining data amount is reached from the end of the address search in the corresponding data acquisition mode, and the predetermined remaining data amount is reached. There is no change in the fact that only the memory read control is performed from the point of time when the disk read and memory write control is started again in the fetch mode, and is not shown. Further, FIG. 12 shows the operation in the case of sequentially reading the data Da to Db, Dc, but the order is arbitrary, and as shown in FIG.
Needless to say, a player capable of simultaneously reproducing music can simultaneously reproduce two music as shown in FIG.

Here, the sufficient remaining data amount Qd (tm) in FIG. 12 is from the end point of the capture mode of 1 to the disk read and the memory write of the next capture mode (that is, over the time tm). It is the amount of data that can be continuously read (for example, the remaining data amount at time ta1 at which the remaining data amount is zero or does not reach the predetermined minimum remaining data amount Qd0 at time ta2). Therefore, time t
m corresponds to the predetermined remaining data amount that determines the stop of the write control. The writing speed (reproduction linear velocity) to each storage area is set to N times the standard, the writing time of the data Db is twb [sec], and the writing time of the data Dc is twc [se.
c]

[0040]

## EQU1 ## tm = tsb + twb + tsc + twc + tsa (1) Here, if the average of each search time is ts [sec] and each write time is equal to tw,

[0041]

## EQU2 ## tm = 3ts + 2tw (2) On the other hand, since writing is performed at N times speed, if only tw is written, the writing amount is N.tw. During that time, since the reading is performed at 1 times speed at the same time, the remaining data amount (accumulation amount) is subtracted from the writing amount hand,
tw · (N−1). This becomes tm.

[0042]

## EQU3 ## tw (N-1) = tm (3) From (2) and (3), tw is deleted,

[0043]

## EQU4 ## tm = 3ts + 2 {tm / (N-1)} (4) By rearranging the above equation,

[0044]

[Equation 5] tm = 3 (N-1) ts / (N-1-2) (5) where ts = 0.5 [sec] and N = 4 (double speed), three songs The amount of remaining data required for simultaneous playback is tm = 3 ×
(4-1) × 0.5 / (4-3) = 4.5, which is 4.5 seconds or more, and about 6 seconds is required considering the design margin. Further, in three areas of Da, Db, and Dc, one player needs 6 × 3 = 18 and 18 seconds, and when the three players are summed, 3 × 18 = 54 and 54 seconds are required. Become.

When the condition for simultaneous reproduction of M songs is calculated based on the equation (5),

[0046]

(6) tm = M · (N−1) · ts / {N−1− (M−1)} (6) By rearranging the above equation,

[0047]

[Equation 7] tm = Mts [1 / {1- (M-1) / (N-1)}] (7) At 4 × speed (N = 4), simultaneous reproduction of four songs (M = 4) If we try to obtain from equation (7),

[0048]

(8) tm = 4ts / (1-1) = 4ts / 0 = ∞ (8), which is unrealizable. Therefore,

[0049]

## EQU00009 ## The condition of N> M ... (9) is required. Therefore, the writing to the memory is 4
In the case of double speed, the maximum number of simultaneous playback is 3 songs.

As one embodiment according to the present invention, a karaoke system which is one of a plurality of request response type information signal supplying devices using the disk player having the virtual multi-pickup reproducing function as described above will be described below. FIG.
FIG. 3 is a block diagram showing the overall configuration of such a karaoke system, and the same reference numerals are given to the same parts as in FIGS. 1 and 2.

In FIG. 13, the disc players 21, 22, 23 as shown in FIG. 11 having the storage areas Da, Db, Dc corresponding to the tunes for simultaneous reproduction of three tunes are installed outdoors. The output video signal and audio signal of each player serve as the input signal of the selector 30, which is a relay unit that relays each reproduction output signal of each disc player to each room. The selector 30 relays each input signal to the video monitor and the speaker in each room according to the selection (relay) control signal from the system controller 18 as the control means.
The disk unit 12Z constitutes a disk mounting means together with the changer 13X, houses the same disks as the disk unit 12A in FIG. 1, and the system controller 18 manages the control state thereof.

The three players perform a reproduction operation based on a reproduction output request command (request) from a commander arranged in each room as command means. The player 21 preferentially processes the request from the room A, and uses the storage area Da at that time to reproduce the requested song. The player 22 preferentially processes the request from the room B, and then uses the storage area Db to reproduce the requested song. The player 23 preferentially processes the request from the room C, and then uses the storage area Dc to reproduce the requested song. When the requests are overlapped on the same disc, the player 21 is in a storage area other than Da, the player 22 is in a storage area Db, and a player 23 is not.
Uses a storage area other than the storage area Dc, executes virtual multi-pickup reproduction, and simultaneously responds to requests from other rooms with lower priorities.

As a main feature of this embodiment, the system controller 18 executes system control according to the flow charts shown in FIGS. 15 to 21 based on the flag, the control unit and the memory address as shown in FIG. . First, FIG. 15 shows a request registration routine. This routine operates separately from the request confirmation and player selection routine, which will be described later. When the command key of the music is pressed from the commander, a music selection command is issued to the host CPU 18a via the receiver and the interrupt is activated (KEYINT). This request registration routine is called. The music selection command is responsible for designating a disc number for instructing a requested song and a track number on the disc for each room.

When the request registration routine is called, processing for determining from which room the request is made is performed in steps S1, S2 and S3.
If the request is from room A, step S1
0, if from room B, go to step S20,
If it is from the room C, the process proceeds to step S30.

When a request is issued from room A,
The CPU 18a writes the designated disk number and the designated track number to a storage location in the internal memory Ma (not shown) designated by the address Na (step S10), and increments the write address Na by 1 (step S).
11). Then, the CPU 18a determines the state of the flag KSFa (step S12).

In step S12, the flag KSFa is set.
Is 0, it is determined that the operation of the room A is in the initial state or that one of the songs designated in the room A has been accepted by the request confirmation routine described later. , Step S to set the next song
The designated disk number and track number are read from the storage location designated by the read address Ka of the memory Ma that has been subjected to the write processing in 10, and the register DrA and the register T are read.
It is stored in nA (step S13). After step S13, the CPU 18a increments the read address Ka by 1 and sets the flag KSFa to "1" (step S1.
4) Confirm the value of the read address Ka (step S1)
5). In step S15, if the read address Ka does not exceed the maximum address m, this routine is ended (RETurn), and if it exceeds, Ka = to correct the read address Ka to the so-called head address of the memory Ma.
The value is set to 0 (step S16), and the process proceeds to processing step S17 for confirming the value of the write address.

To step S17, if the flag KSFa is "1" in step S12, that is, the operation of room A is not in the initial state, and one of the songs previously specified in room A is the request confirmation routine described later. If it is not accepted at CPU 18a
Terminates this routine if the write address does not exceed the maximum address m in step S17, and if it exceeds the write address Na at the start address of the memory Ma.
Na = 0 in order to correct (step S18) and this routine is completed.

On the other hand, if the flag KSFa is "1" and the request music has not been accepted in the request confirmation routine, the process of shifting to step S12 is performed at regular time intervals by the timer interrupt (TINTA). By the flow from step S10 onward, the disc number and the track number of the song designated from the room A are stored in the memory Ma in the order of request, and the flag KSFa is "0", that is, the next song can be accepted in the request confirmation routine. At this time, the disk number and the track number of the oldest song requested by the room A are
It is transferred from the memory Ma to the registers DrA and TnA.

Also in the flow after step S20,
Also in the flow of the step S30, the disk numbers and track numbers of the songs designated from the rooms B and C are stored (registered) in the memories Mb and Mc in the order of request, and the flag is set in the same manner as the flow from the step S10. When KSFb or KSFc is “0” and the next song can be accepted in the request confirmation routine, the disk number and track number of the oldest song requested from the room B or C are stored in the memory Drb and the register DrB.
And TnB or registers DrC and TnC.

As described above, in the request registration routine, requests from the commander are stored in order for each room, and the oldest requests are answered. In the request registration routine, the memory contents of the memories Ma, Mb, Mc, the memory write and read addresses Na, Nb, Nc and Ka, Kb, Kc are set in the initial state (when the power is turned on or when the forced reset is performed). It is cleared and the flags KSFa, KSFb, KSFc are set to "0". Further, when the maximum address of the memory is exceeded, both the read and write addresses are advanced to the head address, but it is practical to process so as not to accept requests for more than a predetermined number of registrable songs. It is omitted in the example for simplification of description.

Next, the request confirmation routine of FIGS. 16 to 18 will be described. FIG. 16 is a flowchart showing a processing procedure for receiving the designated disk number and track number passed from the request registration routine while grasping the operation state of the player 21. In this flow chart, the CPU 18a issues a song selected by the commander A (the commander 17A, the commanders 17B and 17C arranged in the room A are also referred to below) and the designated disk number and track number passed from the registration routine. Step S in response to the performance command
Move to 40. Further, the process proceeds to step S40 after passing through another routine described later.

The flow after step S40 is divided into the following cases (I), (II) and (III). (I) When a performance command is issued from the commander A while the player 21 is not performing any reproduction operation (sel1
f = 0) In this case, it is determined in step S40 that the player 21 is not processing the request from the commander A, that is, the storage area Da is not used (writing of the music in the Da area is completed). When the determination is made, the CPU 18a proceeds to step S40Y and sets the content of the register sel1f to 0. Since the player 21 is not performing the reproducing operation at this time, neither the Db area nor the Dc area is used, and the sequence proceeds through steps S41 and S42, and then proceeds to step S43 to determine the state of the flag KSFa. In the flow immediately after the generation of the performance command, the flag KSFa is "1" (that is, the reproduction of the music corresponding to the performance command has not been started yet), so the process proceeds to step S44, and the content of the register sel1f is determined. To do.

The flow at this time is as follows:
Since S41N and S42N have not been passed, register se
11f is 0, the process proceeds to step S44a,
The contents of the register DrA are determined. In step S44a, the designated disc number stored in the register DrA is the register Dp2 or D that stores the number of the disc mounted by another player except the player 21.
It is determined whether the data is stored in either p3. Therefore, here, it is detected whether or not the player 22 or 23 is loaded with the disc of the designated song. From the determination result, (I-1) normal reproduction processing from the commander A to the player 21, (I-2) virtual multiple pickup reproduction determination processing from the commander A to the player 22, (I-3) commander A to the player 23 Virtual multi-pickup reproduction determination processing from (1) to (3) is performed.

If it is determined in step S44a that the disc having the designated disc number is not loaded in the player 22 or 23, the process proceeds to step S45 to set the above (I-1), and the flag KFSa is set. When it is set to "0", the flag vtrqA is set to "0", a normal reproduction command is issued to the player 21, and the processing routine (FIG. 19) corresponding to the player is performed. In the flowchart, "player 1", "player 2",
Although it is described as "player 3", these are player 2
1, 22, 23, and the description of “commander A”, “commander B”, and “commander C” also corresponds to commander 17A, commander 17B, and commander 17C, which will be described below. The same applies to the flow to be performed.

When it is determined in step S44a that the disc having the designated disc number is loaded in the player 22, in order to perform the above (I-2), step S44 is performed.
Moving to 46, the contents of the register sel2f are confirmed. In step 46, when the numerical value stored in the register sel2f is 1, 3, 5 or 7 (which will be apparent from the flow described later, in this case, the player 2
2 is performing a reproducing operation using the Da area, that is, when the player 22 is processing the request of the commander A, the processing routine immediately corresponding to the commander B (see FIG. 1).
Go to 7). Therefore, the player 21 does not accept the request from the commander A passed from FIG. In other words, at this time, the reproduction output of the player 22 is obtained in the room A provided by the commander A, and the new requested song from the commander A is not reproduced. If the numerical value is not 1, 3, 5 or 7 in step S46, the flag KFSa is set to "0" and the flag vtrq is set.
A is set to "1", a virtual multiple pickup reproduction command is issued to the player 22, and the process routine (FIG. 20) corresponding to the player is entered.

If it is determined in step S44a that the disc having the designated disc number is loaded in the player 23, step S3 is performed in order to perform the above (I-3).
Moving to 47, the contents of the register sel3f are confirmed. In step 47, when the numerical value stored in the register sel3f is 1, 3, 5 or 7 (this will be apparent from the flow described later, but in this case, the player 2
3 is performing a reproducing operation using the Da area, that is, when the player 23 is processing a command A request, the processing routine immediately corresponding to the commander B (FIG. 1) is executed.
Go to 7). Therefore, the player 21 does not accept the request from the commander A passed from FIG. In other words, at this time, the reproduction output of the player 23 is obtained in the room A provided by the commander A, and the new requested song from the commander A is not reproduced. If the numerical value is not 1, 3, 5 or 7 in step S47, the flag KFSa is set to "0" and the flag vtrq is set.
A is set to "1" and a virtual multi-pickup reproduction command is issued to the player 23, and the processing routine (FIG. 21) corresponding to the player is entered.

(II) When a performance command is issued from the commander A while the player 21 is reproducing using the storage area Da (sel1f = 1, 3, 5, 7) In this case, step S40 When it is determined that the request from the commander A is being processed, that is, the storage area Da is being used (writing of music in the Da area is not completed), the process proceeds to step S40N and the content of the register sel1f is set to 1. To do. As a result, the content of the register sel1f becomes 1, 3, 5 or 7 in the subsequent steps from step S41, and after this is determined in step S44, the processing corresponding to the commander B is immediately performed without operating the flags KFSa and vtrqA. The routine shifts to the routine (FIG. 17).

(III) When a performance command is issued from the commander A while the player 21 is using only the storage area excluding the storage area Da for reproduction operation (sel1f =
2, 4, 6) In this case, after 0 is stored in the register sel1f through steps S40 and S40Y, the request from the commander B is being processed in step S41.
That is, it is determined whether the storage area Db is in use (writing of music in the Db area is not completed),
Alternatively, and / or in step S42, if it is determined that the request from the commander C is being processed, that is, the storage area Dc is being used (writing of music in the Dc area is not completed), the register is executed in step S41N or / and S42N. 2 or / and 4 are added to the contents of sel1f. This allows register sel1
The content of f becomes 2, 4 or 6, which is discriminated in step S44, and then it is discriminated in step S44b whether or not the designated disc number accompanying the performance command is attached to the player 21. In step S44b, it is determined whether or not the content of the register DrA is equal to the content of the register Dp1. In order to respond to the request from, the virtual multi-pickup reproduction command is issued with the flag vtrqA set to "1", and the processing routine corresponding to the player 21 (FIG. 19) is entered. If the content of the register DrA is different from the content of the register DpA in step S44b, the process routine corresponding to the commander B (FIG. 17) is entered.

As described above, in the request confirmation routine corresponding to the commander A as shown in FIG. 16, first, the operation state of the player 21 (based on the music writing state determination result in each storage area in steps S40, S41, S42). Confirms the contents of the flag sel1f by step S
In (44), it is confirmed that the performance command from the commander A is issued (sel1f = 0) in a state where (I) the player 21 is not performing any reproducing operation. A normal reproduction command is issued to the player (step S45), while the player 22 or 23 has the designated disc (except when the Da area corresponding to the player 21 is used in the player 22 or 23). A virtual multi-pickup playback command is issued to 22 or 23 (step S46N or S47N), and (II) a performance command is issued from the commander A while the player 21 is playing back using the storage area Da. That (sel1
When f = 1, 3, 5, 7) is confirmed, it is determined that the instruction should not be accepted, and the process proceeds to the request confirmation routine corresponding to the commander B in FIG. 17, and (III) the player 21 stores the storage area Da. When it is confirmed that a performance command is issued from commander A (sel1f = 2, 4, 6) in a state where the playback operation is performed using only the storage area except for, A process of issuing a virtual multi-pickup reproduction command to the player 21 (step S44bY) is performed.

Also in the request confirmation routine corresponding to the commander B as shown in FIG.
The content of the flag sel2f is determined by the operation state (based on the music writing state determination result in each storage area in steps S50, S51, and S52), and in step S54, the (I) player 22 is not performing any reproduction operation. In this state, a performance command was issued from Commander B (s
(el2f = 0) is confirmed, a normal reproduction command is issued to the player 22 when the designated disc is not in the players 23 and 21 (step S55), while when the designated disc is in the player 23 or 21 (these players 23 and 21). , 21 except when the Db area corresponding to the player 22 is used) Player 23 or 2
A virtual multi-pickup reproduction command is issued to the CPU 1 (step S56N or S57N), and (II) a performance command is issued from the commander B while the player 22 is reproducing using the storage area Db ( sel1f = 2
3, 6, 7), it is determined that such a command should not be accepted, and the process moves to the request confirmation routine corresponding to the commander C in FIG. 18, and (III) the player 22 stores a storage area other than the storage area Db. When it is confirmed that the performance command from the commander B is issued (sel1f = 1, 4, 5) in a state where the player 22 is using only the reproduction disk, the virtual command is sent to the player 22 only when the specified disk is in the player 22. A multiple pickup playback command is issued (step S54).
bY) is performed.

Similarly, in the request confirmation routine corresponding to the commander C as shown in FIG.
The contents of the flag sel3f are determined by the operation state of No. 3 (based on the music writing state determination result in each storage area in steps S60, S61, S62), and step S64
In (I), it is confirmed that the performance command from the commander C is issued (sel3f = 0) in a state where the player 23 is not performing any reproduction operation. On the other hand, a normal reproduction command is issued (step S65), while the designated disc is in the player 21 or 22 (D corresponding to the player 23 in these players 21 and 22).
A virtual multi-pickup reproduction command is issued to the player 21 or 22 (except when the c area is used) (step S66N or S67N), and the (II) player 23
Is issued by the commander C while the memory area Dc is being used for playback (sel1f =
4, 5, 6, 7), it is determined that such an instruction should not be accepted, and the process proceeds to the request confirmation routine corresponding to the commander A in FIG.
When it is confirmed that the performance command from the commander C is issued (sel1f = 1, 2, 3) in the state where 3 is using only the storage area excluding the storage area Dc for the reproduction operation, the designated disk is sent to the player 23. Player 2 only if there is
Issue a virtual multi-pickup playback command to 3 (step S
64bY).

Therefore, in these request confirmation routines, it is determined whether the virtual multi-pickup reproduction should be performed, the normal reproduction should be performed, or the request should not be accepted, depending on the operation of each player, the disc mounting state, and the designated disc number. I am making a decision. Next, the player selection routine of FIGS. 19 to 21 will be described.

FIG. 19 is a flowchart showing a processing procedure for controlling the reproduction operation of the player 21 based on the processing contents of the request confirmation routine. The player selection routine is responsible for control for virtual multi-pickup reproduction as shown in FIG. 12 and control for normal reproduction. The main characteristic operations will be described below.

(I) When the player 21 issues a normal reproduction command from the commander A (sel1f = 0, vt
rqA = “0”) In this case, the CPU 18a sequentially performs steps S70a, S70b, S70c, and then step S7.
In step 1, the designated track number designated by the register DrA and the mounted disc of the player 1 designated by the register Dp1 are compared and discriminated. As a result of the determination, if both disc numbers are different (including the case where the designated disc is not mounted in the player 1), a control command is issued to the changer 13X to mount the designated disc designated by the register DrA in the player 1 in step S71N. Then, the process proceeds to step S72. If both disc numbers are the same in step S71, the process immediately proceeds to step S72. Step S
Reference numeral 72 denotes a process of searching the mounted disc of the player 1 for the designated track number stored in the register TnA. When the end of the search is determined in step S73, the process proceeds to step S74 and the Da area is concerned. The disc reading and memory writing control of the song based on the searched track number are started. After the start, the processing routine corresponding to the commander B (FIG. 17) is entered.

As described above, when the player 21 issues the normal reproduction command from the commander A, it confirms that the player has loaded the designated disc, and starts the reproduction process of the music corresponding to the issued reproduction command. To do.

(Ii) If the player 21 is not performing any reproduction processing (sel1f = 0) or is executing reproduction processing other than the request processing from the commander B (sel1f = 1, 4, 5), the commander When the virtual multi-pickup reproduction command is issued from B to the player 21 (vtrqB = "1"), in this case, the process proceeds from step S57N to step S70a in FIG. When it is determined in step S70a that the flag vtrqB is "1", the process proceeds to step S77. In step S77, the contents of register sel1f are determined. If the content of the register sel1f is 1 or 5, that is, if the player 21 uses at least the Da area to process the request from the commander A, the process proceeds to step S771 and the amount of writing in the Da area is sufficient. Check if there is. As described above with reference to FIG. 12, the sufficient write amount is set so that the reading from the Da area is continued when the memory writing is switched from the Da area to another area.

In step S771, at this time, it is continuously monitored that the write amount becomes sufficient by the write operation to the Da area in the request process to the commander A, and the process waits for the shift to the next step. When the write amount becomes sufficient, the process proceeds to step S772 to determine whether the content of the register sel1f is 5 (that is, whether the player 21 uses the Da and Db areas to process the requests from the commanders A and B). Determine. If the content of the register sel1f is 5, the process proceeds to step S773, and the write amount of the Db area is also set to step S7.
Similar to 71, check if it is sufficient. After confirmation, the process proceeds to step S774, and a search is performed on the disc mounted on the player 21 for the designated track number stored in the register TnB in response to the virtual multiple pickup reproduction command issued from the commander B to the player 21 issued this time. . When the end of the search is determined in step S775, the process proceeds to step S776, and the disc reading and memory writing control of the music in the Db area based on the searched track number is started. Commander B after start
To the processing routine (FIG. 17) corresponding to.

In step S77, the register sel
If it is determined that the content of 1f is 0 (that is, the player 21 has not processed any request but the designated disc is mounted), the process immediately proceeds to step S774, and the commander B using the Db area in the player 21. Request processing is executed. In this request processing, the player 21 performs the reproduction operation only for the request of the commander B, and is virtually not virtual pickup reproduction.

In step S77, the register s
The content of el1f is 4 (that is, the player 21 plays Dc
If it is determined that only the area is used to process the request from the commander C), the process immediately shifts to step S773 to check whether or not only the write amount in the Db area is sufficient. When it is determined in step S772 that the content of the register sel1f is 1 (that is, whether the player 21 uses the Da area to process the request for only the commander A), the process immediately proceeds to step S774 without performing step S773. do it,
In response to the virtual multi-pickup reproduction command issued from the commander B to the player 21 issued this time, a search is performed on the disc mounted on the player 21 for the designated track number stored in the register TnB.

In this way, when the player 21 is not executing the request processing from the commander B, the commander B
When a virtual multi-pickup playback command is issued from, it is confirmed that the write amount of the used storage area (area other than the Db area) is sufficient according to the content of the register sel1f, and the issued playback is issued. The reproduction process of the music corresponding to the command is started.

(Iii) Whether the player 21 is not performing any reproduction processing (sel1f = 0) or the commander C
When a reproduction process other than the request process from (1) is executed (sel1f = 1, 2, 3), the commander C issues a virtual multi-pickup reproduction command to the player 21 (vtrqC = “1”). Also in this case, after shifting from step S66N of FIG. 18 to steps S70b and S76, the write amount in the used storage area (area other than the Dc area) is sufficient according to the contents of the register sel1f, as in (ii) above. Then, the reproduction processing of the music corresponding to the issued reproduction command is started.

(Iv) When the player 21 is executing a reproduction process other than the request process from the commander A (sel1f = 2, 4, 6), the commander A issues a virtual multi-pickup reproduction command to the player 21. When issued (vtrqA = “1”) In this case as well, after shifting from step S44bY to steps S70c and S75 of FIG. It is confirmed that the amount of writing in the present storage area (area other than the Da area) is sufficient, and the reproduction processing of the music corresponding to the reproduction command issued is started.

In the flow chart of FIG. 20 showing the processing procedure for controlling the reproduction operation of the player 22, as in the flow chart of FIG.

(I) When the player 22 has issued a normal reproduction command from the commander B (sel2f = 0, vt
At rqB = “0”), it is confirmed that the player has loaded the designated disc, and the reproduction process of the music corresponding to the reproduction command issued is started.

(Ii) If the player 22 is not performing any reproduction processing (sel2f = 0) or is performing reproduction processing other than the request processing from the commander C (sel2f = 1, 2, 3), the commander When a virtual multi-pickup reproduction command is issued from C to the player 22 (vtrqC = “1”), step S in FIG.
After shifting from 67N to steps S80a and S87, it is confirmed that the write amount in the used storage area (area other than the Dc area) is sufficient according to the contents of the register sel2f, and the issued playback command is responded to. Start the playback process of

(Iii) Whether the player 22 is not performing any reproduction processing (sel2f = 0) or the commander A
When a reproduction process other than the request process from (1) is executed (sel2f = 2, 4, 6), the commander A issues a virtual multi-pickup reproduction command to the player 22 (vtrqA = “1”). After shifting from step S46N of FIG. 16 to steps S80b and S86,
According to the contents of the register sel2f, it is confirmed that the amount of writing in the used storage area (area other than Da area) is sufficient, and the reproduction processing of the music corresponding to the issued reproduction instruction is started.

(Iv) When the player 22 is executing a reproduction process other than the request process from the commander B (sel2f = 1, 4, 5), the commander B issues a virtual multi-pickup reproduction command to the player 22. If it is issued (vtrqB = "1"), step S of FIG.
After shifting from 54bY to steps S80c and S85,
According to the contents of the register sel2f, it is confirmed that the amount of writing in the used storage area (area other than the Db area) is sufficient, and the reproduction processing of the music corresponding to the reproduction command issued is started. Make up.

Further, in the flowchart of FIG. 21 showing the processing procedure for controlling the reproduction operation of the player 23, as in the flowcharts of FIGS.

(I) When the player 23 issues a normal reproduction command from the commander C (sel3f = 0, vt
At rqC = “0”), the mounting of the designated disc in the player is confirmed, and the reproduction process of the music corresponding to the reproduction command issued is started,

(Ii) If the player 23 is not performing any reproduction processing (sel3f = 0) or is performing reproduction processing other than the request processing from the commander A (sel3f = 2, 4, 6), the commander When a virtual multi-pickup reproduction command is issued from A to the player 23 (vtrqA = "1"), step S of FIG.
After shifting from 47N to steps S90a and S97, it is confirmed that the amount of writing in the used storage area (area other than Da area) is sufficient according to the contents of the register sel3f, and the playback command issued is dealt with. Start the playback process of

(Iii) Whether the player 23 is not performing any reproduction processing (sel3f = 0) or the commander B
When a reproduction process other than the request process from (1) is executed (sel3f = 1, 4, 5), the commander B issues a virtual multi-pickup reproduction command to the player 23 (vtrqB = “1”). After shifting from step S56N of FIG. 17 to steps S90b and S96,
According to the contents of the register sel3f, it is confirmed that the amount of writing in the used storage area (area other than the Db area) is sufficient, the reproduction processing of the music corresponding to the issued reproduction instruction is started, and

(Iv) When the player 23 is executing a reproduction process other than the request process from the commander C (sel3f = 1, 2, 3), the commander C issues a virtual multi-pickup reproduction command to the player 23. When issued (vtrqC = “1”), step S in FIG.
After shifting from 64bY to steps S90c and S95,
According to the contents of the register sel3f, it is confirmed that the amount of writing in the used storage area (area other than the Dc area) is sufficient, and the reproduction processing of the music corresponding to the issued reproduction command is started. Make up.

As described above, in the player selection routines of FIGS. 19 to 21, the state of the storage area is confirmed in response to the virtual multi-pickup reproduction command from each commander and according to the operating state of each player. Virtual multi-pickup playback is started. After the start, the operation control as described in FIG. 12 is executed. When the virtual multi-pickup reproduction is completed, step S4
0, S50, S60 determines that, step S
Registers sel1f, sel2f, s for instructing the operating state of the player in 40Y, S50Y, S60Y.
Since the content of el3f is set to 0, reproduction processing will be performed under a new request acceptance environment after the end.

According to the present embodiment, in order to deal with a plurality of commanders with one disc unit, the player reads out at a standard rate while reading out at least at double speed and writing in the buffer memory. It has a function of independently reproducing at least two or more same songs or different songs from one same disc at the same time. As a result, it is possible to provide a system that can service one set of disk units without changing the order of requests even if requests for the same disk from a plurality of rooms overlap. It is possible to extremely reduce the number M of disk units with respect to N. Therefore, there is a merit in terms of space saving and cost saving, and the performance is far superior to that of the conventional one shown in FIG.

In the above embodiment, for example, while the player 1 is using only the storage area outside the Da area, the commander A
When a performance command is issued from (sel1f = 2, 4,
6) Only when the designated disc is in the player 1, the performance command is accepted and the virtual multi-pickup playback command is issued (step S44bY). If the designated disc is not in the player 1, the performance command is not accepted and Db or / And, the end of the reproduction process using the Dc area is to be waited. Although the processing can be simplified (the capacity of the program can be reduced) in this manner, on the other hand, when the above case occurs, the player 2 or 3 is made to accept the performance command from the commander A. Is also good. Also,
In the above-mentioned embodiment, the player having the three-track simultaneous playback function is used. However, the present invention is not limited to this, and any number of players capable of simultaneously playing two or more tracks may be used. Of course, the number of rooms supplying the plural request response type information signals can be set arbitrarily. Further, although the karaoke system for supplying the video and audio signals to each room has been described in the above embodiment, the present invention is not limited to this, and various information signals such as a system for supplying only the video signal or only the audio signal. It can be applied to the system for supplying.

[0096]

As described above in detail, according to the plural request response type information signal supplying apparatus of the present invention, the recording information of the information recording disk in which the information data is recorded in the predetermined unit
One data reading point reads data at a reading rate twice or more the predetermined standard rate and writes it in one storage area or another storage area of the memory. A plurality of simultaneous reproductions are performed by reading from each storage area of the memory at a predetermined standard rate while performing a read information switching operation of switching the storage area to be written in the memory while moving from the position 1 in A plurality of disc players that simultaneously reproduce a plurality of specified units of information data in response to a command are used. An information recording disc to be reproduced is attached to each of the disc players having the simultaneous reproduction function of a plurality of recorded information signals, and each of the reproduction output signals of the disc player is relayed to a plurality of supply destinations according to the relay control signal. Then, when a reproduction output request command corresponding to the supply destination is issued, in response to this,
A plurality of simultaneous reproduction commands are issued to the disc player according to the disc mounting state in each of the disc players, and the reproduction output signal of the disc player to which the plurality of simultaneous reproduction commands are issued is relayed to the supply destination corresponding to the reproduction output command.

Therefore, even if the designated discs required by a plurality of reproduction output commands overlap, a plurality of designated information data can be simultaneously reproduced and outputted from the designated discs by a corresponding disc player, so that the reproduction output commands can be individually output. It is possible to reduce the number of disk units by reducing the waiting time for issuing each user.

[Brief description of drawings]

FIG. 1 is a block diagram showing a conventional karaoke system in which a disc player and a disc unit are independently arranged in each room.

FIG. 2 is a block diagram showing a karaoke system in which a disc player and a disc unit are installed outdoors, and the performance control of each room is centrally managed.

FIG. 3 is a block diagram showing the configuration of a disc player used in an embodiment of the present invention.

4 is a flowchart showing a processing procedure of a CPU in the disc player of FIG. 3 (initial setting operation flow).

5 is a flowchart showing a processing procedure of a CPU in the disc player shown in FIG. 3 (first music reproduction operation flow).

6 is a flowchart showing a processing procedure of a CPU in the disc player shown in FIG. 3 (operation flow for stopping writing control of a first music piece to a first memory).

FIG. 7 is a flowchart showing a processing procedure of a CPU in the disc player of FIG. 3 (second music playback operation flow).

8 is a flowchart showing a processing procedure of a CPU in the disc player shown in FIG. 3 (operation flow for stopping control of writing second music to second memory).

FIG. 9 is a time chart showing a read address and a write address with respect to elapsed time of the first and second memories controlled by the flowcharts of FIGS. 4 to 8.

10 is a time chart showing a reproduction mode and remaining data amounts of the first and second memories for clearly explaining the operation principle of the disc player of FIG.

FIG. 11 is a block diagram of a disc player configured by applying the disc player of FIG. 3 so that three songs can be simultaneously reproduced from the same disc.

FIG. 12 is a time chart showing a reproduction mode and an amount of remaining data in a Da area in a memory for explaining the operation of the disc player shown in FIG. 11.

FIG. 13 is a block diagram showing a karaoke system of one embodiment of the present invention configured by using the disc player of FIG. 11.

14 is a table showing the contents of flags, control units, and memory addresses used in a control routine executed by the host CPU in the karaoke system of FIG.

15 is a flowchart showing a processing procedure of a request registration routine executed by a host CPU in the karaoke system of FIG.

16 is a flowchart showing a processing procedure of a request confirmation routine executed by the host CPU in the karaoke system of FIG. 13 (state confirmation processing flow of the player 21).

17 is a flowchart showing a processing procedure of a request confirmation routine executed by the host CPU in the karaoke system of FIG. 13 (state confirmation processing flow of the player 22).

FIG. 18 is a flowchart showing a processing procedure of a request confirmation routine executed by the host CPU in the karaoke system of FIG. 13 (state confirmation processing flow of the player 23).

FIG. 19 is a flowchart showing a processing procedure of a player selection routine executed by the host CPU in the karaoke system of FIG. 13 (playback control processing flow of the player 21).

20 is a flowchart showing a processing procedure of a player selection routine executed by the host CPU in the karaoke system of FIG. 13 (playback control processing flow of the player 22).

21 is a flowchart showing a processing procedure of a player selection routine executed by the host CPU in the karaoke system of FIG. 13 (playback control processing flow of the player 23).

[Explanation of symbols for main parts]

1 disk 2 spindle control circuit 3 spindle motor 4 pickup 5 RF amplifier 6 data extraction circuit 7, 7A, 7B CD-DA demodulation / correction circuit 71, 71A, 71B graphics decoder 8, 8A, 8B D / A converter 9 pickup control circuit 10 CPU 11 Memory Control Circuit 20 Buffer RAM 12Z Disk Unit 13X Changer 14A, 14B, 14C Video Monitor 15RA, 15LA, 15RB, 15LB, 15RC,
15LC speaker 16A, 16B, 16C receiver 17A, 17B, 17C commander 18 system controller 18a host CPU 21, 22, 23 disc player 30 selector

[Procedure amendment]

[Submission date] November 16, 1993

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Claims (6)

[Claims] 1. A storage area of a memory or other storage device for reading information recorded on an information recording disk, in which information data is recorded in a predetermined unit, at a reading rate twice or more a predetermined standard rate by one information reading point. And a read information switching operation of moving the information reading point from one position in the information data to another position and switching the storage area to be written in the memory each time a predetermined amount of data is read. A plurality of discs that simultaneously reproduce a plurality of the predetermined units of information data designated in response to a plurality of simultaneous reproduction commands by reading from each of the storage areas of the memory at the predetermined standard rate. A multi-request response type information signal supply device using a player, wherein the information to be reproduced in each of the disc players. Disc mounting means for mounting a recording disc, relay means for relaying each of the reproduction output signals of the disc player to a plurality of supply destinations in response to a relay control signal, and a command for issuing a reproduction output request command corresponding to the supply destinations. Means for responding to the reproduction output request command, and issuing a plurality of simultaneous reproduction commands to the disk player in accordance with a disk mounting state in each of the disk players, and a reproduction output signal of the disk player to which the plurality of simultaneous reproduction commands are issued. And a control means for issuing the relay control signal to the relay means so as to relay to the supply destination corresponding to the reproduction output command. 2. The disc player comprises a rotation driving means for rotating a disc on which information data of a plurality of predetermined formats is recorded at a predetermined recording rate, and a predetermined portion of the information data corresponding to an information detection point of a pickup. Reading means for reading information data recorded at a position to obtain read data, demodulation means for performing demodulation processing of the read data, and reading position control for moving an information detection point of the reading means to a predetermined position on the disk. And a memory having at least two storage areas for storing the read data, and write control for each storage area in the memory at a rate twice or more the predetermined recording rate. And a read-out control for each storage area simultaneously at a rate equal to the predetermined recording rate. Control means, the rotational drive means rotationally drives the disk at twice or more a rotational speed corresponding to the predetermined recording rate, and the memory control means stores one of the storage areas. Each time a predetermined amount of read data is written in the area, the write control of one of the storage areas is stopped and the write control of the other storage area of the storage area is started, and the read position Every time a predetermined amount of read data is written in one of the storage areas, the control means sets the information detection point of the read means from a predetermined position in one of the information data to another information. 2. The multi-request response type information signal supply device according to claim 1, wherein the device is moved to a predetermined position in the data. 3. The control means monitors the disc mounting state in each of the disc players, and in response to the reproduction output request command, the disc player 1 requests the reproduction output command for the information data in the predetermined unit. When it is detected that the same disc as the designated disc on which is recorded is mounted, the plurality of simultaneous reproduction commands are issued to the disc player 1, and the disc player in which the plurality of simultaneous reproduction commands is issued is The relay control signal is issued to the relay means to relay a reproduction output signal obtained by the predetermined unit of information data requested by the reproduction output command to a supply destination corresponding to the reproduction output command. 1. The multi-request response type information signal supply device described in 1. 4. The multi-request response type information according to claim 1, wherein the disc mounting means performs a disc mounting operation to the disc player only when a reproduction command other than the plural simultaneous reproduction command is issued. Signal supply device. 5. The multi-request response type information signal supplying apparatus according to claim 1, wherein the information data of the predetermined unit is a video and audio signal of a music unit. 6. The predetermined amount of data is an amount of information that can be continuously read from the memory from the end point to the start point of writing information to one (or another) storage area of the memory. The multi-request response type information signal supply device according to claim 1, 3, 4, or 5.