JPH0438669A - Changer type disk reproducing device - Google Patents

Abstract

PURPOSE:To operate a device in the same manner as a single player type reproducing device by reproducing plural disks on following carriages and the disk on a preliminarily determined carriage in order after the end of reproducing operation of the disk on a carriage. CONSTITUTION:When a first carriage selecting switch is operated, preliminarily determined one of nXcarriages is selected, and the single play operation to reproduce only the disk on the carriages in the following reproducing operation is set. When a second carriage selecting switch is operated, a desired carriage other than the preliminarily determined carriage is selected, and the changer play operation to reproduce plural disks on following carriages and the disk on the preliminarily determined carriage in order after the end of reproducing operation of the disk on the selected carriage in the following reproducing operation is set. Thus, the device is operated in the same manner as the single player type reproducing device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a changer-type disc playback device, and more particularly to a changer-type disc playback device equipped with a tray.

[Prior Art] Conventionally, a changer-type disk playback device is known in which a magazine into which a plurality of carriages carrying disks are inserted is mounted, and the disks in the magazine can be selectively played back.

In this device, when attempting to play a disc that is not inserted into the magazine, first remove the magazine from the device, pull out the carriage from inside the magazine, place the disc to be played on the carriage, and then insert it into the magazine. The magazine had to be reattached to the device, making it difficult to operate.

Therefore, as described in Japanese Utility Model Application No. 62-195257, a changer-type playback device was proposed which was equipped with a tray into which a carriage similar to the carriage in a magazine was inserted, and this device was commercialized ( US JVC
XL-M2O3) and sold in the USA.

” When the two-unit device (xL-M2O3) finishes playing the disc on the carriage P inserted into the first helay, it then transfers the disc on the carriage in the magazine to the carriage P.
Since the discs are reproduced in order from the beginning, from an operational standpoint, the discs on the carriage P in the tray are considered to be the same as the discs on carriages 1 to 6 in the magazine.

This device also has a switch P on the front panel for selecting/playing the disc on the carriage P, and a switch P on the carriages 1 to 6.
Although switches 1 to 6 are provided for selecting and reproducing the upper disks, when the reproduction of the disk on the carriage specified by these switches is completed, the remaining disks are thereafter sequentially reproduced in order of carriage number.

For example, if the switch P is operated with the disc on the carriage P, 2.5, the carriage P, 2.5
After the disks on the carriage 2.5 are sequentially reproduced, the apparatus enters a stopped state, and when the switch 2 is operated, the disks on the carriage 2.5 are sequentially reproduced and then the apparatus enters a stopped state.

[Problems to be Solved by the Invention] As described above, although this device is equipped with a 1-ray, like the conventional single-player type playback device equipped with only a 1-ray, only the disc on the carriage P in the tray is It had the disadvantage that it was not possible to perform single play operations (playback operations only for a single disc).

[Means for Solving the Problems] The present invention provides a changer-type disc playback device that eliminates the above-mentioned drawbacks, and includes n carriages each having a disc loading section on which a disc can be placed. , a tray with a single slot into which the carriage can be inserted and removed;
1-lay moving means for moving a tray into which one of the carriages is inserted between an eject position where it projects outside the apparatus and a load position where it is housed within the apparatus; The slots 1 to 3 each have n slots capable of accommodating the stocker, and the stocker is placed at n positions such that each slot of the stocker is at the same height as the slot of the tray brought to the loading position. a carriage moving means for moving the carriage between the tray brought to the loading position and the stocker brought to any of the n positions; a disc reproducing means for reproducing a disc on a carriage inserted into a tray that has been brought into the tray; and a disc reproducing means for reproducing a disc on a carriage inserted into a tray; a moving means for mounting the upper disc on a disc reproducing means;
A first carriage selection switch that selects a predetermined one carriage out of the n number of carriages, and a second carriage selection switch that selects any one of the plurality of carriages other than the predetermined carriage. , 1st
and a control means for controlling each moving means based on the operation of the second carriage selection switch.

[Function] When the first carriage selection switch is operated, the device of the present invention selects a predetermined carriage out of n carriages, and in the subsequent playback operation, the device selects a predetermined one of the n carriages. It becomes a single play operation that only plays the dista.

Furthermore, when the second carriage selection switch is operated, the device of the present invention selects a desired carriage other than a predetermined carriage, and in the subsequent playback operation, after the playback operation of the disc on the carriage is completed, A changer play operation is performed in which a plurality of disks on carriages after the carriage and disks on a predetermined carriage are sequentially played.

[Example 1] An example of the apparatus of the present invention will be described below with reference to the drawings.

(1) Mechanism explanation Figure 1 schematically shows the mechanism of the device of the present invention, and 1-ray 7 shows a single-play carriage S equipped with a disk mounting section in a slot (not shown) from the left side of the drawing. ), and the disc on the carriage S is brought to a standby loading position.

The optical disc base 11 is equipped with a spindle motor 9 to which a disc mounting table 8 is attached, and an optical head 10 that is movable in the access direction to read information recorded on the disc, and lifts the disc on the carriage S using a magnetic clamper. 12 to the up position for clamping.

A disk sensor 13 fixedly disposed below the tray 7 detects the presence or absence of a disk on the carriage through an opening (not shown) formed in the tray 1 and the carriage S (formed in all carriages). It's for a purpose.

On the other hand, a stocker 14 corresponding to a conventional magazine is provided inside the device so as to be movable up and down, and is located at a position S where a carriage S for single play can be inserted and removed from the right side of the drawing at 15 at the top end of the front panel 1. , remaining Freon 1-16
〜21 and a carriage for changer play respectively''〜6
is inserted.

Tray/carriage moving/moving mechanism 22 is 1-ray motor 23
is the driving source, and the tray 7 and the carriage inserted in the tray 7 are placed in a standby loading position (
Fig. 2 (A)) and the eject 1 position that protrudes from the panel 24 to the front 1 and allows the disk to be placed on the carriage (
2 (B)), and also move the carriage only further between the row 1 position and the store position (Fig. 2 (C)) where it is inserted into the slots 1 to 14. be able to.

The position detection switch 27 from Ishek 1 to position detection ON position 25 and S 1 is! ~ By mechanically detecting the operating position of the ray/carriage moving mechanism 22,
The load position detection sensor 26 detects the eject position and the 1-ray/carriage movement mechanism 22 by optically detecting the operating position of the 1-ray/carriage moving mechanism 22, thereby detecting the eject position and the 1-ray/carriage movement mechanism 22. (This will be explained in detail later)
.

The optical head base vertical mechanism 28 uses a clamp motor 29 as a driving source to move the optical head base 11 between the up position (Fig. 3 (A)) and the down position (Fig. 3 (B)) in which the tray 7 and carriage can be moved. The locking state of the tray lock mechanism 30 is released by moving the tray locking mechanism 30 between the two positions and further moving the optical head base 11 from the up position to the down position while keeping the optical head base 11 in the down position. It is. The 1-lay locking mechanism 30 enters a locked state by engaging with the tray 7 brought to the loading position, thereby preventing the tray 7 from shifting.

The up position detection switch 31, the down position detection switch 32, and the lock release detection switch 33 detect the above-mentioned up position, down position, and lock release, respectively, by mechanically detecting the operating position of the optical head base vertical mechanism 28. It is something.

The stocker moving mechanism 34 uses the motors 1 to 35 as driving sources, and moves the stocker 14 to position S (FIG. 4(A)) where the carriage S can be inserted and removed, and position 1 where the carriage 1 can be inserted and removed.
(Fig. 4 (B)), . . . can be moved to the position 6 (Fig. 4 (G)) where the carriage 6 can be inserted and removed.

The stocker position detection sensor 36 moves the movement mechanism 3 to the step 1.
Each of the above-mentioned positions is detected by optically detecting the operating position of the stocker 1.
4 is lowered to approximately the middle between position S and position 1.

(2) Description of control circuit The operation control circuit of the above-mentioned mechanism will be explained below with reference to FIG.

One end of each of the stock switch 41, eject/load switch 42, playback switch 43, stop switch 44, carriage S selection switch 45, and carriage 1-6 selection switch 46, which selects the operation mode, is grounded.
The other ends of each are connected to the power supply element B via resistors R1 to R6, respectively. S, carriage 1
-6 selection signal 1-6 is output to the microcomputer 40.

Further, the load position sensor 26, disk sensor 13, and stocker position sensor 36 described above have one end connected to the ground, and the other end connected to the power supply terminal B via the respective resistors R7 to R9.
and outputs a load position signal LOAD, a disk detection signal D-DET, and a stocker position signal 5-pos to the microcomputer 40, respectively.

Further, one end of each of the reference position detection switch 37, down position detection switch 32, eject position detection switch 25, and store position detection switch 27 is connected to the ground, and each other end is connected to the power supply B through the respective resistors RIO1R12 to R14. The microcomputer 4o outputs a reference position signal R-PO8, an up position signal EJECT, an eject position signal EJECT, and a store position signal S■゛○RE, respectively. and,
One end of each of the up position detection switch 31 and the lock release detection switch 33 are both connected to the ground, and the other ends are both connected to the power supply element B via the resistor R1l.
A down position signal DOWN is output to 0.

Therefore, as shown in FIG. 6, when the tray 7 is brought to the eject position, the isolator 191 to the position detection switch 25 are turned on, and the eject position signal EJECT becomes "L". When the carriage is brought to the store position, the store position detection switch 27 is turned on and the store position signal 5TORE becomes "L". Furthermore, the load position signal LOAD becomes HTT when the tray 7 or the carriage is brought to the speed deceleration sections S1 and S2 before and after the load position, and becomes HTT when the tray 7 or the carriage is brought to the load position section S3. When the carriage is brought to the disk detection section S4, which is wider than the load position section S3, the disk sensor 13 can detect the presence or absence of a disk, and the disk detection signal D-
DET becomes "L" in the disc detection section S4 when there is a disc on the carriage.

On the other hand, as shown in FIG. 7, when the up position signal UP is optically brought to the up position, the up position detection switch 31 is turned on and LL L
When the tray lock mechanism 30 is unlocked, the lock release switch 33 is turned on and becomes "L I+" again.Then, the down position signal DOW
When the optical head 11 is brought to the down position, the down position detection switch 32 is turned on and becomes "L".
become.

Further, as shown in FIG. 8, the stocker position signal 5-
pos becomes uL'' every time the stocker 14 is brought to each of the above positions S, 1 to 6, and the reference position signal R-PO8 falls from approximately the middle of the stocker 14 between position MS and position 1. Then, the reference position detection switch 37 is turned on and becomes “L”.
'become.

Further, the microcomputer 4-0 (FIG. 5) detects changes in the state of each of the above-mentioned signals based on the flowchart described later, and sends the FRONT signal FRONT and the rear signal REAR to the tray motor drive circuit 47 that drives the tray motor 23. , a clamp up signal CL-UP and a clamp down signal C are sent to the clamp motor drive circuit 48 that drives the clamp motor 29.
L-DOWN, and the stocker up signal 5T is sent to the motor drive circuit 49 from S1 that drives the stocker motor 35.
-UP and switch output the down signal 5T-DOWN.

Note that the tray motor drive circuit 47 receives the front signal FRO.
When NT becomes flH'''', a voltage is output that causes the tray motor 23 to rotate in the direction in which the tray 7 moves to the eject position 1~, and when the rear signal REAR becomes rr Hu'', the tray 7 moves in the direction to the load position. It outputs a voltage that causes the tray motor 23 to rotate.

Furthermore, when the clamp up signal CL-UP becomes "H", the clamp motor drive circuit 48 outputs a voltage that causes the clamp motor 29 to rotate in the direction in which the Radbase 11 moves to the up position, and the clamp down signal CL-DOWN.
When becomes "H", a voltage is output to the optical device that causes the clamp motor 29 to rotate in the direction in which the Radbase 11 moves to the down position.

Then, when the stocker up signal 5T-UP reaches 11■('', the stocker motor drive circuit 49 outputs a voltage that causes the stocker motor 35 to rotate in the direction in which the s1 hex force 10 moves to the position S, and the stocker position signal 5T- DOWN is “H”
” outputs a voltage that causes the stocker motor 35 to rotate in the direction in which the stocker 1° moves to position 6.

(3) Flowchart 1/Description Flowchart 1 to 1 showing the programs executed by the above-mentioned microcomputer 40 will be described below.

Note that in flowchart 1- described below, Do-
D6 indicates the presence or absence of a disk in the carriage S, 1 to 6, respectively; for example, D3-1 indicates that the carriage 3 has a disk. Also, m is the carriage currently in use and the switch 1.
4, mO indicates that carriage S (0) is in use and stocker 14 is at position S, m = 1
indicates that carriage 1 is in use and stocker 14 is at position 1, . . . m=6 indicates that carriage 6 is in use and stocker 14 is at position 6. Furthermore, the memory that stores this information is equipped with a backup battery, so that it will not be erased even if the power to the device is turned off.

■Flowchart in the stopped state Figures 9 (A) to (D) show flowchart 1 in the stopped state.
・In the loop from step 81 to S5, the stock signal Tding σW, the eject 1 to load signal lowered 7,
The fall of the reproduction mode signal PLAY, the carriage S selection signal, and the carriage 1-6 selection signal τ2 is detected.

When the stock switch 41 is operated, step S1 becomes Y.
ES, change n to '' in step S6, and proceed to step 8.
In the loop from 7 to S9, from DJ to D6, whether or not it is O or not, that is, from carriage 1 to carriage 6, a carriage without a disc is searched for. If there is a carriage without a disc and step S7 becomes YES, subroutine L1
Move the optical Radbase 7 from the up position to the down position.

Flowchart 1 to subroutine L1 are shown in FIG.
Set N to "H'" and lower the Radbase 11 to the optical system.
The fall of the down position signal DOWN is detected in the loop of step Sll. Then, when the optical radar base 11 is lowered to the down position, step S]-1 becomes YES, and in step S12, the clamp down signal CL-DOW is output.
N is set to II L 11 to stop the optical head base 11 from descending.

When subroutine L1 is completed, subroutine L2 moves the carriage at the loading position to the s1-a position (inside the s1-sucker).

Flowchart 1- of subroutine L2 is shown in FIG. 11, and in step S20 the rear signal REAR is set to LL HIH.
The carriage is moved in the direction from I to A, and the store position signal τT is output in a loop of step S21.

Detect the falling edge of RE. And then the carriage starts (~
When the carriage moves to the a position, the answer in step S21 becomes YES, and in step S22, the rear signal REAR is set to ``,'' to stop the movement of the carriage.

When subroutine L2 ends, step 1 is executed in subroutine L3.
4 to the position n set in step S6 or S8 (a position where the carriage n without a disc can be inserted or removed).

A flowchart of subroutine L3 is shown in FIG. 12, in which it is determined in step S30 whether n is smaller than m;
The target position n of the stocker 14 is smaller than the current position iUm,
That is, when it is downward, step S30 becomes YES, and step S31 outputs the stocker down signal 5T-DOWN.
is set to "H" to move the stocker 14 downward. Then, each time a fall of the stocker position signal 5-pos is detected in the loop of steps 832 to 834, 1 is subtracted from m to confirm that m is the same as n, that is, the stocker 14 has moved to the target position n. If detected, step S34 becomes YES, and stocker position signal 5T-DOW is detected in step S35.
N is set to "L" to stop the movement of the stocker 14.

Further, when the target position Mn is higher than the current position m, the answer in step 830 becomes No, and the stocker up signal 5T-UP is set to "H" in step S36 to
move upward. Then, steps 837 to S39
In the loop, 1 is added to m every time the fall of the stocker position signal 5-pos is detected, and when it is detected that m is the same as n, that is, the stocker 14 has moved to the target position n, step YES in S39, and in step S40, the stocker amplifier signal 5T-UP is set to rrL'' to stop the movement of the stocker 1-4.

When subroutine L3 ends, subroutine L4 moves the carriage from the storage position (inside the stocker) to the load position.

Flowchart 1- of subroutine L4 is shown in FIG.
H", the carriage is moved in the ejecting direction, and the rise of the load position detection signal LOAD is detected in the loop of step S51. When the carriage moves to the speed deceleration section SL (FIG. 6), step S51 becomes YES. In steps 852 to S60, as shown in FIG. 22(A), the front signal FRONT is switched at a cycle of 10 m5 until the fall of the load position detection signal LOAD is detected.
A pulse output with a duty of -50% is used to decelerate the carriage movement speed and accurately stop the carriage at the loading position.

When subroutine L4 is completed, in subroutine L5, the locking mechanism 30 is unlocked by the optical base moving mechanism 28.

A flowchart of the subroutine L5 is shown in FIG. 14, and in step S70 the clamp down signal CL-DOWN is
IIH'', the optical head base moving mechanism 28 is operated in the direction of lowering the optical head base 11, and the fall of the up position signal UP is detected in the loop of step S71.The tray lock mechanism 3o is unlocked. When the lock release detection switch 33 is turned on, step S
71 becomes YES, and in step S72, the clamp down signal CL-DOWN is set to II L II, and the operation of the optical rad base moving mechanism 28 is stopped.

When the subroutine L5 ends, the tray 7 and the carriage are moved to the in-191 position in a subroutine L6.

A flowchart of the subroutine L6 is shown in FIG. 15, and in step 880, the Freon 1~signal FROM is set to "H".
The tray 7 and the carriage are moved in the eject direction, and the load position signal LOAD is output in the loop of step S81.
Detects the falling edge of

Tray 7 and carriage speed deceleration section S2 (Figure 6)
When the RAD base 11 is moved toward the eject 1 until it is pulled out, step S81 becomes YES, and in step S82, the RAD base moving mechanism 28 is operated toward the optics in the direction of raising the RAD base 11 toward the clamp-up optical system, and in the loop of Step S83, it is moved to the up position. Detect the rising edge of signal UP.

When the lock release detection switch 33 is turned off and the optical base moving mechanism 28 is operated until the tray lock mechanism 30 is in the lockable position again, step S83
becomes YES, and in step S84, the clamp-up signal CL-UP is set to "L" and the optical head base moving mechanism 2
8 is stopped, and the fall of the eject position signal EJECT is detected in a loop of step S85. Tray 7
When the carriage moves to the IN 191 position, the FRONT signal FRONT is set to "L" in step 886 to stop the carriage.

When this subroutine L6 is completed, the flowchart 1 to (FIG. 18) in the eject state, which will be described later, is proceeded to.

On the other hand, in the loop of steps 87 to S9, if the carriages without a disc are sequentially searched for from carriages 1 to 6, and all of them have discs, step S9 becomes YES, and the operation of the switch 41 is effectively Ignore it and proceed to step S2.

Next, when the eject 1~/load switch 42 is operated, step S2 becomes YES, and the optical head base 7 is moved from the up position to the down position in the above-mentioned subroutine LL (Fig. 10). After the tray lock mechanism 30 is unlocked by the optical hand base moving mechanism 28 in Fig. 14), subroutine L6 is performed.
The tray 7 and the carriage are moved to the eject position, and the process proceeds to a flowchart (FIG. 18) for the eject state, which will be described later.

Next, when the playback switch 43 is operated, step S3 becomes YES, and in step S90 it is determined whether D (m) is 1, that is, whether there is a disc in the carriage currently in use, and YES is determined. Then, in step S91, the playback mode is set and flowcharts 1 to (1) in the playback state described later are executed.
Proceed to Figure 21).

On the other hand, if No in step S90, rl is set to 1 in step S92, and D
From carriage 1 to carriage D6, search is made to see if it is 1 or not, that is, from carriage 1 to carriage 6, a carriage with a disc is searched for. If there is a carriage with a disc and step S93 becomes YES, subroutine Ll (Fig. 10) moves the optical rad base 7 from the up position to the down position, and subroutine L2 (Fig. 11) moves the carriage in the loading position. Move it to position 1~A (inside the slider),
In subroutine L3 (Fig. 12), the stocker 14 is moved to the position n set in step S90 or S94 (a position where the carriage n with a disc can be inserted and removed), and in subroutine L4 (Fig. 13), the carriage is moved to the store position. (in the stocker) to the load position, and in subroutine L7, the optical spatula 1-base 7 is moved from the town position to the up position.

A flowchart of subroutine L7 is shown in FIG. 16. In step 5100, the clamp-up signal CL-UP is set to "IIH" to raise the radbase 11 to the optical system, and in the loop of step 5101, the fall of the amplifier position signal π is detected. Then, when the optical radar base 11 rises to the up position, the answer in step 5101 becomes YES, and the clamp up signal CL-UP is set to "L" in step 5102.
” to stop the RAD base 11 from rising toward the optical system.

When this subroutine L7 ends, in step S91, the program enters the playback mode and proceeds to a flowchart (FIG. 21) for the playback state, which will be described later.

On the other hand, if the loop of steps 893 to S95 sequentially searches for carriages with discs from carriages 1 to 6, but none of them contain discs, and the result in step S95 is YES, the operation of the playback switch 43 is substantially ignored and the process proceeds to step S4. move on.

Next, when the carriage S selection switch 45 is operated, step S4 becomes YES, and m is set to O in step 5110.
In other words, it is determined whether the carriage currently in use is S or not. If YES, there is no need to change the carriage, so the operation of the carriage S selection switch 45 is substantially ignored and the process proceeds to step S5. .

On the other hand, if NO in step 5110, subroutine LL (Fig. 10) moves the optical Radbase 7 from the up position to the down position, and subroutine L2 (Fig. 11) moves the Radbase 7 from the up position to the down position.
The carriage at the load position is moved to the store position (inside the stocker) in subroutine L8, and the sliders 1 to 14 are moved to position S in subroutine L8.

A flowchart of subroutine L8 is shown in FIG. 17, and in step 5120 stocker down signal 5T-DOW is
Set N to "H" and lower the stocker 14, step 8
121 to 5123, each time the stocker position signal 5-pos falls, m is subtracted by 1, and the stocker reference signal R-PO8 is
When the fall of the stocker position signal S-p is detected and the stocker 14 falls between the positions S and 1 and step 5123 becomes YES, the stocker position signal S-p is detected in a loop of step 5124.
Detect the fall of OS. Then, when the stocker 14 is lowered to position S, step 5124 becomes YES.
Step 5125 resets m to O, step 81
At step 26, the stocker down signal 5T-DOWN is set to "IIL" to stop the movement of the stops 1 to 14.

As described above, according to subroutine L8, the stocker reference signal π-pos is set to the value of m indicating the stocker current position.
Since the stocker position signal 5-pos goes to O and resets I- at the fall of the stocker position signal 5-pos after reaching L II, a discrepancy may occur between the value of m and the actual position of the stocker 14 due to a count error, etc. However, if the stocker 14 is moved to the position S, it can be returned to its original state. Note that steps 5121 and 122 correspond to interrupt processing, and are provided so that the value of m always indicates the position of the stocker 14 even while the stocker 14 is moving to the S position.

When subroutine L8 ends, subroutine L4 (first
3), move the carriage S from the store position (inside the slot 1) to the load position, and then move the carriage S to the load position using subroutine L7 (Fig. 16).
The optical head base 7 is moved from the down position to the up position, and the process proceeds to step S5.

Next, when the carriage 1-6 selection switch 46 is operated, step S5 becomes YES, and m
is O, that is, whether the carriage currently in use is S. If YES, step 5131 determines whether n is O.
1, and in the loop of steps 8132 to 5134, D
From carriage 1 to carriage D6, search is made to see if it is 1 or not, that is, from carriage 1 to carriage 6, a carriage with a disc is searched for.

There is a carriage with a disc, and step 5134 is Y.
When ES is reached, the optical head base 7 is moved from the up position to the down position in subroutine Ll (Fig. 10).
In subroutine L2 (Fig. 11), the carriage S in the loading position is moved to the S1 to A position (inside the S1 to A position),
In subroutine L3 (FIG. 12), the stocker 14 is moved to the position n (set in step 5131 or 5133).
In subroutine L4 (Fig. 13), the carriage is moved from the store position (inside the stocker) to the load position, and in subroutine L7, the radbase 7 is moved to the optical position. from the position to the up position, and return to step S1 described above.

On the other hand, if there are no discs in all of the carriages 1 to 6 and the above-mentioned step 5134 becomes YES, then the carriages 1 to 6 are all empty.
The operation of the 6 selection switch 45 is substantially ignored and the process returns to step S1.

Further, if NO in step 5130 described above, n is set to m+1 in step 5135, and steps 8136 to
Carriage m- in order from carriage n in a loop of 140
Look for a carriage with discs up to 1. For example, when m is 2 (carriage 2 is in use), carriages 3, 4.
Search for a carriage with a disc in the order of 5.6.1.

There is a carriage with a disc, and step 5137 is Y.
When ES is reached, subroutine Ll (Figure 10) moves the optical Radbase 7 from the up position to the down position.
In subroutine L2 (Fig. 11), the carriage in the loading position is moved to the stocker position (inside the stocker), and in subroutine L3 (Fig. 12), the carriage 14 is moved to the position set in step S90 or S94. Move to n (position where carriage n with disc can be inserted and removed),
Subroutine L4. (Fig. 13) moves the carriage from the store position (inside the slot 1) to the load position, subroutine L7 (Fig. 16) moves the optical base 7 from the down position to the up position, and returns to step S1. .

On the other hand, carriages 1 to 1 other than the carriage m currently in use
If there is no disc in the carriage 1-6 and the answer in step 8136 is YES, the operation of the carriage 1-6 selection switch 45 is substantially ignored and the process returns to step S1.

■Flowchart in the eject 1 state Fig. 18 (
A) to (C) are flowcharts in the eject state, and in a loop of steps 8150 to 5153, the rising edge of JECT is detected using the S1 to SQ signals τ.

When the stock switch 41 is operated, step 5150
becomes YES, and in step 8160 it is determined whether m is O or not, that is, whether the carriage currently in use is S or not. Since the carriage S is basically used for single play, it is not moved directly from the eject position to the store position, so if step 5160 becomes YES, the operation of the stock switch 41 is substantially ignored and the process proceeds to step 5151. .

On the other hand, if the carriage is not S but No in step 5160, subroutine L9 moves tray 7 to the loading position.
Move the carriage to the S1 to A positions.

Flowchart 1- of subroutine L9 is shown in FIG. 19, and in step 8180 the rear signal REAR is
Then, the tray 7 and the carriage are moved in the store direction, and the fall of the load position signal LOAD is detected in step 8181.

Then, the tray 7 and the carriage are in the loading position section S3.
(Figure 6), step 8181 is YES.
, and in step 5182, the disk detection signal D - D
It is detected whether or not E u” is “L”, that is, whether there is a disc on the carriage. If YES, step 8
183, set D (m) to 1, and if No, step 51
In step 84, D (m) is set to 0, and in a loop of step 8185, it is detected whether the store position signal -@ST ORE has fallen.

The carriage moves to the s1 to a position, and step 81
When 85 becomes YES, in step 5186, the Noah word R is
Set EAR to “LI+” and stop the carriage movement.

When the subroutine L9 ends, in step S161 D(
Determine whether m) is 1 or not, and if YES, step 81
In step 62, n is set to 1, and in a loop of steps 8163 to 165, it is determined whether or not it is O in order from Dl to D6, that is, carriage 1.
Search the carriages in order from 6 to 6 for a carriage without a disc.

There is a carriage without a disc, and step 8163 is Y.
When ES is reached, subroutine L3 (Figure 12)
The lever 14 is moved to the position n set in step 5162 or 5164 (a position where the carriage n with a disc can be inserted and removed), and the carriage is moved from the store position (inside the stocker) to the subroutine L4- (FIG. 13). After moving the tray lock mechanism 30 to the loading position and unlocking the tray lock mechanism 30 by the optical rad base moving mechanism 28 in subroutine L5 (Fig. 14), move the 1-ray 7 and the carriage to the eject position in subroutine L6 (Fig. 15). , and proceed to step S1-51.

On the other hand, if the loop of steps 8163 to 8165 searches for carriages without a disc in order from carriages 1 to 6, and all of them have discs, step 5165
becomes YES, n is set to 1 in step 8166, the switch 14 is moved to position 1 in subroutine L3 (FIG. 12), and subroutine L4. (Fig. 13), the carriage 1 is moved from the store position (inside the stocker) to the load position, and in subroutine L7, the optical base 7 is moved from the down position to the up position, and the flowchart in the stopped state described above is Proceed to Char 1 (Figure 9).

Further, if the above-mentioned step 8161 becomes NO, n is set to 1 in step 8167, and steps 8168 to 17
In a loop of 0, it sequentially searches from DI to D6 to see if it is 1 or not, that is, from carriage 1 to carriage 6, it searches for a carriage with a disc.

There is a carriage with a disc, and step 8168 is Y.
When ES is reached, subroutine L3 (FIG. 12) moves the slot holder 14 to the position n set in step 5167 or 5169 (position M to which the carriage n with a disc can be inserted/removed), and subroutine L4-(FIG. 12) The carriage is moved from the store position (inside the stocker) to the load position in FIG. 13), and the optical head bed 7 is moved from the down position to the up position in subroutine L7. ).

On the other hand, in the loop of steps 8168 to 5170, if the carriages with discs are searched in order from carriages 1 to 6, but there are no discs, step 5170 is performed.
becomes YES, subroutine L8 (Figure 17) moves the stocker 14 to position ff1s, subroutine L4 (Figure 13) moves the carriage from the store position (inside the stocker) to the load position, and subroutine L7 moves the carriage to the load position. The optical Radbase 7 is moved from the down position to the up position, and the flowchart 1 to (FIG. 9) in the above-mentioned stopped state is proceeded to.

Next, when the eject/load switch 42 is operated or the tray in the eject position is pushed in the loading direction and the eject 1 position detection switch 25 is turned off, step 5151 or 5L52 becomes YES, and subroutine LIO returns I- Move Ray 7 and carriage from the eject position to the Row 1 (position).

A flowchart of the subroutine LIO is shown in FIG. 20. In step 5190, the rear signal REAR is set to "H" to move the tray 7 and the carriage in the direction from SL to A.
In the loop of step 5191, the load position signal ROA D
Detect the rising edge of .

1- When the ray 7 and the carriage move to the speed deceleration section S2 and step 5191 becomes YES, step 81
92 to 5200, the rear signal REAR is outputted as a pulse with a period of 10 m5 and a duty ratio of 50% to reduce the moving speed of the 1-ray 7 and the carriage as shown in FIG. ROAD
Detects the falling edge of

Then, the tray 7 and the carriage are in the loading position section S3.
If you move to , step 5195 or 5199 is YE.
S, and the movement of the tray 7 and carriage is stopped.

When the subroutine LIO ends, it is determined in step 5210 whether the disk detection signal D-DET is IIL'', that is,
Detects whether there is a disc on the carriage.

There is a disk on the carriage and step 5210 is Y.
When it becomes ES, D(m) is set to 1 in step 5217,
In subroutine L7, the optical eight 1 moves the base 7 from the down position to the up position, clamps the disk on the carriage, and performs the flowchart 1 in the stopped state described above.
・Proceed to (Figure 9).

On the other hand, if there is no disk on the carriage, step 521
If 0 becomes NO, D(m) is set to O in step 5211, and it is determined in step 5212 whether m is O, that is, whether the carriage currently in use is S.

The carriage currently in use is S and step S2]2 is YES
When S is reached, the optical rad base 7 is immediately moved from the down position to the up position in subroutine L7, and the process proceeds to flowcharts 1 to 2 (FIG. 9) for the double stopped state.

On the other hand, the carriage currently in use is not S but step 52.
12 is No, in subroutine L2 (FIG. 11) the carriage at the load position is moved to the s1 to a position (inside the stocker), n is set to 1 in step 5213, and step 5214. -216 loop sequentially searches from Dl to D6 to see if it is 1 or not, that is, from carriage 1 to carriage 6, searches for a carriage with a disc.

There is a carriage with a disc, and step 5214 is Y.
When ES is reached, subroutine L3 (Figure 12)
The claw 14 is moved to the position n set in step 5213 or 5215 (a position where the carriage n with a disc can be inserted and removed), and subroutine L4 (FIG. 13)
In subroutine L7, the carriage is moved from the S1-A position (inside the S1-A position) to the load position, and in subroutine L7, the optical spatula 1-Hess 7 is moved from the down position to the up position. Flowchart (Figure 9)
Proceed to.

40- On the other hand, in the loop of steps 8214 to 8216, if the carriages with discs are searched for from carriages 1 to 6 in order, but there are no discs, step 8216 is performed.
becomes YES, the stocker 14 is moved to position S in step L8 (FIG. 17), and subroutine L4. (13th
The carriage is moved from the store position (inside the stocker) to the load position in FIG. 16, and the optical head base 7 is moved from the down position to the up position in subroutine L7 (FIG. 16).
Proceed to Figure 9).

Next, when the playback switch 43 is operated, step 51
53 becomes YES, subroutine L10 (Figure 20)
The tray 7 and the carriage are moved from the eject position to the load position, and in step 5220 it is detected whether the disc detection signal D-DET is "IIL", that is, whether there is a disc on the carriage.

There is a disc on the carriage and step 5220 is Y.
When ES is reached, move the optical Radbase 7 from the down position to the up position in subroutine L7 (Fig. 16).
After instructing the reproduction mode in step 5222, the process proceeds to a flowchart for the reproduction state, which will be described later.

On the other hand, if there is no disk on the carriage, step 522
If 0 becomes NO, in step 5224 it is determined whether m is O or not.
That is, it is determined whether the carriage currently in use is S, and if the carriage is S and step 5224 is YES, subroutine L7 (FIG. 16) moves the Radbase 7 from the down position to the up position. After that, the process proceeds to flowchart 1 in the stopped state described above.

On the other hand, the carriage currently in use is not S, and step 5
When 224 becomes No, n is set to 1 in step 5225, and in a loop of steps 8226 to 228, from D1 to D6, whether it is 1 or not, that is, from carriage 1 to carriage 6, a carriage with a disc is searched for.

There is a carriage with a disc, so step 226 is YES.
When S is reached, subroutine L2 (Fig. 11) moves the carriage at the load position to S1 position (inside the stocker), and subroutine L3 (Fig. 12) moves the carriage from the load position to stocker 14.
is moved to the position n set in step 5225 or 5227 (a position where the carriage n with a disc can be inserted and removed), and the carriage is moved from the store position (inside the stocker) to the load position in subroutine L4 (Fig. 13). Further, after moving the optical hand base 7 from the down position to the up position in subroutine L7 (FIG. 16), the process proceeds to the flowchart for the above-mentioned stopped state.

On the other hand, in the loop of steps 8226 to 8228, if the carriages with discs are searched in order from carriages 1 to 6, but there are no discs, step 5228 is performed.
becomes YES, and use subroutine L2 (Fig. 11) to move the carriage in the loading position to the S1~A position (inside the S1 ~
In subroutine L8 (Fig. 17), the switches 1 to 14 are moved to position S, and in subroutine L4 (Fig. 13),
After moving the carriage from the stocker position (inside the stocker) to the load position in subroutine L7 (Figure 16) and moving the optical base 7 from the down position to the up position in subroutine L7 (Figure 16), Proceed to flowchart 1 in state.

■Flowchart in the playback state Figures 21 (A) to (D) show flowcharts in the playback state. In the loop of steps 8230 to 5235, the start signal 5TOCK, the eject 1 to load signal E/L, and the stop Mode signal TTOP, playback mode signal PLAY, carriage S selection signal y, carriage 1-6
Each falling edge of the selection signal D=lower and the end of disk playback are detected.

When the stock switch 41 is operated, step 5230
becomes YES, and step S24. With O, n is set to 1, and in the loop of steps 5241 to 5243, from Dl to D6, whether or not O is found, that is, from carriage 1 to carriage 6, a carriage without a disc is searched.

There is a carriage without a disc, and step 5241 is Y.
When ES is reached, after instructing the stop mode in step 5244, the optical Radbase 7 is moved from the up position to the down position in subroutine LL (Fig. 10), and the carriage in the loading position is moved in subroutine L2 (Fig. 11). In subroutine L3 (Fig. 12), the stocker 14 is moved to the position set in step 5240 or 5242 (position where carriage n with a disc can be inserted and removed). , subroutine L4. (Fig. 13), the carriage is once moved from the store position (inside the stocker) to the load position, and in subroutine L5 (Fig. 15), the tray lock mechanism 30 is unlocked by the optical rad base movement mechanism 28, and,
In subroutine L6 (FIG. 15), the tray 7 and the carriage are moved to the eject 1~ position, and the process proceeds to flowchart 1~ (FIG. 18) in the double eject 1~ state.

On the other hand, in the loop of steps 8241 to 5243, if the carriages without a disc are searched for in order from carriages 1 to 6, and all of them have discs, step 5243 is performed.
becomes YES, the operation of the stock switch 41 is substantially ignored and the process proceeds to step 5231.

Next, when the eject 1~/load switch 42 is operated, step 5231 becomes YES, and after instructing stop mode 1 with the step/I6 knob 5245, the rad base 7 is moved to the optical system using the subroutine LL (Fig. 10). Move from the up position to the down position, sublutin L5 (Figure 15)
After the tray lock mechanism 30 is unlocked by the optical rad base moving mechanism 28, the tray 7 and the carriage are moved to the eject position in subroutine L6.
The flowchart in the eject state described above (first
Proceed to Figure 8).

Next, when the stop switch 44 is operated, step 523
2 becomes YES, and after instructing the stop mode in step 8246, the process proceeds to the flowchart (FIG. 9) for the double stop state.

Next, when the carriage S selection switch 45 is operated, step 5233 becomes YES, and step 5250 selects m.
is O or not, that is, whether the carriage currently in use is S or not. If YES, there is no need to change the carriage, so the operation of the carriage S selection switch 45 is substantially ignored and step 5234 is performed. Proceed to.

On the other hand, if the result in step 5250 is No, step 52
After entering the stop mode in step 51, subroutine LL (10th
Move the optical hand base 7 from the up position to the down position in subroutine L2 (Figure 11), move the carriage in the load position to the store position (inside the slider) in subroutine L2 (Figure 17), and move the carriage in subroutine L8 (Figure 17). Desu 1 ~ Tsuka 14
is moved to position S, the carriage S is moved from the pull position (inside the stocker) to the load position in subroutine L4 (Fig. 13), and the optical head base 7 is lowered in subroutine L7 (Fig. 16). From the position to the up position, step 5252 ends.

It is determined whether or not is 1, that is, whether or not there is a disk on the carriage S.

If there is a disc on the carriage S and step 5252 becomes YES, step 5253 sets the playback mode, and then the process advances to step 5234.

On the other hand, there is no disc on the carriage S, and step 525
If 2 becomes NO, the process proceeds to flowchart 1 to (FIG. 9) in the above-mentioned stopped state.

Next, when the carriage 1-6 selection switch 46 is operated, step 5234 becomes YES, and step 8260
In step 8261, it is determined whether m is O or not, that is, whether the carriage currently in use is S or not.
Then, in the loop of steps 8262 to 8264, from Dl to D6, check if it is 1 or not, that is, carriage 1.
Search for carriages with discs in order from 6 to 6.

There is a carriage with a disc, and step 8262 is Y.
When ES is reached, after instructing the stop mode in step 5280, the optical head base 7 is moved from the up position to the down position in subroutine Ll (Fig. 10), and the carriage S in the loading position is moved in subroutine L2 (Fig. 11).
is moved to the stocker position (inside the stocker), and the stocker 14 is moved to step 5261 in subroutine L3 (Fig. 12).
Alternatively, move the carriage to the position Nn set by 5263 (position W where carriage n with a disc can be inserted and removed), and then move the carriage from the position to the slot (inside the slot) to the position W in subroutine L4 (Fig. 13). 1, move the optical head from the down position to the up position in subroutine L7, and instruct the reproduction mode in step 8281, and then proceed to step 5235.

On the other hand, if there are no discs in all of the carriages 1-6 and the above-mentioned step 264 becomes YES, then the carriages 1-6
Step 5, substantially ignoring the operation of the selection switch 45.
Proceed to 235.

In addition, if the carriage is not S but the step 5260 described above
is No, in step 8265 n is set to m + 1, and in steps 5266 to 270 the carriage n is
Carriages containing a disc are sequentially searched for from carriage m-1 to carriage m-1.

There is a carriage with a disc, and step 8267 is Y.
When ES is reached, the stop mode is set in step 5280, and then subroutine L1. (Fig. 10) moves the optical base 7 from the up position to the down position, and in subroutine L2 (Fig. 11) moves the carriage in the roll 1 position to the -a position (inside the roll). Then, in subroutine L3 (Fig. 12), the stocker 14 is moved to the position n set in step S90 or S94 (a position where the carriage D with a disc can be inserted and removed), and in subroutine L4 (Fig. 13), the carriage is moved. from the stocker position (inside the stocker) to the load position, and subroutine L
After moving the optical head 7 from the down position to the up position in step 7 (FIG. 16) and instructing the playback mode in step 8281, the process advances to step 5235.

On the other hand, carriages 1 to 1 other than the carriage m currently in use
If there is no disc in the carriage 1-6 and the result in step 8266 is YES, the operation of the carriage 1-6 selection switch 45 is substantially ignored and the process proceeds to step 5235.

Next, when it is detected that the reproduction of the last song has ended based on a signal from a signal processing circuit (not shown), step 52
At step 90, a stop mode is set, and at step 5291, it is determined whether or not m is O, that is, whether or not the carriage currently in use is S.

If the carriage is S and step 5291 is YES, the process proceeds to flowchart 1- (FIG. 9) in a double stopped state.

On the other hand, if the carriage is not S and the result in step 5291 is NO, n is set to m+1 in step 0S292, and in a loop of steps 8293 to 295, carriages with discs are searched in order from carriage n to carriage 7.

If there is a carriage with a disk and step 5293 becomes YES, subroutine LL (Fig. 10) moves the optical head base 7 from the up position to the down position, and subroutine L2 (Fig. 11) moves the carriage in the loading position. Move it to the S1-A position (inside the S1-A position),
In subroutine L3 (Fig. 12), the slider 14 is moved to the position n set in step 5292 or 5294 (position where carriage n with a disc can be inserted and removed), and in subroutine L4 (Fig. 13), the carriage 14 is moved to the position n set in step 5292 or 5294. 1~
In addition, in subroutine L7 (Fig. 16), the optical head base 7 is moved from the down position to the up position, and in step 8
At step 296, it is determined whether D (n) is 1, that is, whether there is a disk on carriage n.

Most likely, step 5293 becomes YES, and step 82
Step 8296 is definitely YES because it has progressed to 96.
Then, after instructing the playback mode in step 5297,
Returning to step 5230 described above.

On the other hand, in the loop from steps 8293 to 5295, carriages with discs were searched for from carriage n to carriage 7, but there were no carriages with discs.
If step 5295 becomes YES, subroutine LL
(Fig. 10) moves the optical Radbase 7 from the up position to the down position, subroutine L2 (Fig. 11) moves the carriage in the load position to the store position (inside the stocker), and subroutine L8 (Fig. 17) ) to move the stocker 14 to position S, and subroutine L4 (first
3), the carriage is moved from the S1 position (inside S1 to Y) to the load position, and subroutine L7
(FIG. 16), the optical head 7 is moved from the down position to the up position, and in step 8296, D (n) is 1.
In other words, it is determined whether there is a disk in carriage nl.

If there is a disc in the carriage S, step 8296 becomes YES, step 5297 instructs the reproduction mode, and then the process returns to step 5230.

On the other hand, if there is no disc on the carriage S, step 8
296 becomes No, and the process proceeds to flowchart 1 in the above-mentioned stopped state (FIG. 9).

(4) Operational Description An example of the operation of the apparatus of the present invention will be described below with reference to the flowchart 1- mentioned above.

First, the operation when the stock switch 24 is operated to store six discs will be explained.

Note that, as shown in FIG. 23(A), the carriage S
is brought to the load position and all carriages are empty of discs.

When the stock switch 41 is operated, the microcomputer 40 advances through steps S1, S6, S7, and subroutine L1 in the flowchart in the stopped state shown in FIG. (Fig. 23 (B)), subroutine L2 moves the carriage S to position 1 (Fig. 23 (C)), and subroutine L3 moves the stocker 14 to position 1 (Fig. 23 (D)).
), and the carriage 1 is moved to the loading position in subroutine L4 (FIG. 23(E)).

Then, in subroutine L5, the tray 7 is unlocked (not shown), and in subroutine L6, the tray 7 is unlocked.
and move the carriage 1 to the eject position (second
Figure 3 (F)).

When the disk D is placed on the carriage 1 that has been moved to the eject position (FIG. 23 CG)) and the stock switch 41 is operated again, the microcomputer 40 is activated as shown in FIG. 18 (A).
The flowchart in the eject state shown in steps 5150 and 5160, and subroutine L9,
In subroutine L9, the tray 7 is moved to the roll position and the carriage 1 is moved to the store position (FIG. 23(1)).

Note that when the 1-ray 7 and the carriage 1 pass the loading position (FIG. 23 (G)), step 5183 (19th
In the figure), Dl indicating the presence or absence of a disk in the carriage 1 is stored as 1 (disc present).

Therefore, the microcomputer 40 performs steps 5161.5162.
Proceed to step 5163, this time n is 2 and step 8163 is Y
ES, and subroutine L3 moves the trays 1 to 14 to position 2 (Fig. 23 (J)), subroutine L4 moves the carriage 2 to the loading position (Fig. 23 (K)), and subroutine L5 moves the tray 7 to position 2 (Fig. 23 (J)). The tray 7 and the carriage 2 are moved to the eject position by subroutine L6 (FIG. 23(L)).
When the disk D is placed on the carriage 2 that has been moved to the eject position (FIG. 23 (M)) and the stock switch 41 is operated again, the carriage on which the disk is placed is placed in the stocker in the same manner as described above. It is housed within 14,
Move the carriage without a disc to the eject position.

Then, after the last carriage 6 is moved to the eject position (FIG. 23 (N)) and the disk D is placed (FIG. 23 (0)), when the stock switch 41 is operated again, the same as described above is performed. Then, in subroutine L9, set tray 7.
is moved to the loading position, and the carriage 6 is moved to the S1-A position (FIG. 23(Q)). When the tray 7 and the carriage 6 pass the loading position (FIG. 23(P)), D6 indicating the presence or absence of a disk in the carriage 6 is memorized as 1 (disc present) in step 5183 (FIG. 19).

Therefore, since the microcomputer 40 stores D1 to D6 as all 1, step 8165 becomes YES, and in subroutine L3, switches 1 to 14 are set to position 1 (see FIG. 23).
R)), the carriage 1 is moved to the loading position in subroutine L4 (FIG. 23 (S)), the optical rad base 11 is moved to the up position in subroutine L7, and the disk D on the carriage 1 is moved to the standby position (FIG. 23 (S)). )), the flowchart for the stopped state (FIG. 9) is proceeded to, and the state waits for input of the operation switch.

Next, as shown in FIG. 24(A), the operation when the stock switch 41 is operated without a disk being placed on the carriage 3 at the eject position will be described. Note that the disk D is placed only on the carriage 1.2.

When the stock switch 41 is operated, the microcomputer 40 advances to steps 5150 and 8160 and subroutine L9 in the eject state flowchart shown in FIG. (Figure 24(C)).

Note that when the tray 7 and the carriage 3 have moved to the loading position (Fig. 24(B)), step 8184 (first
9), set D3, which indicates the presence or absence of a disk in carriage 3, to O(
(no disk) is stored in memory.

Therefore, the microcomputer 40 performs steps 5161.5167.
5168, step 8168 becomes YES when n=1, subroutine L3 sets the stocker 14 to position 1 (Fig. 24 (D)), subroutine L4 sets the carriage 1 to the loading position (Fig. 24 (E)), And subroutine L
7, move the optical base 11 to the up position, and put the disc D on the carriage 1 into standby as shown in Figure 24 (
F)) Proceeds to flowchart 1- in the stopped state, and waits for input of the operation switch.

Next, as shown in FIG. 25(A), the operation when the stock switch 41 is operated without a disk being placed on the carriage 1 at the eject position will be described. Note that no disks are placed on any of the carriages.

When the stock switch 41 is operated, the microcomputer 40 advances the flowchart in the eject state shown in FIG. Figure (C)).

When the tray 7 and the carriage 1 pass through the loading position (FIG. 24(B)), in step 8184 (FIG. 19), Dl indicating the presence or absence of a disk in the carriage 1 is memorized as O (no disk).

Therefore, the microcomputer 40 performs steps 5161.5167.
The process proceeds to step 5168, and since all D1 to D6 are stored as 0, step 5170 becomes YES and subroutine L
8, the stocker 14 is moved to position S (Fig. 25 (D)), subroutine L4 moves the carriage S to the loading position (Fig. 25 (E)), and subroutine L7 moves the optical Radbase 11 to the up position. (FIG. 25(F)) The flowchart for the stopped state is proceeded to, and the state waits for input of the operation switch.

Next, as shown in FIG. 26(A), the carriage S
The operation when the stock switch 41 is operated while the above disc is being played will be explained. In addition, the remaining carriages 1 to 6
There are no discs installed in all of them.

When the stock switch 41 is operated, FIG. 21(A)
Flowchart step 5 in the playback state shown in
230.5240. The process proceeds to step S24.1.5244, and the stop mode is instructed in step 5244 (Fig. 26(B)).
, subroutine L1 moves the optical rad base 11 to the down position (Fig. 26 (C)), subroutine L2 moves the carriage S to the store position (Fig. 26 (D)), and subroutine L3 moves the stocker 14 to position 1 (Fig. 26 (D)). Figure 26 (E)),
In subroutine L4, the carriage 1 is moved to the loading position (FIG. 26(F)).

Then, in subroutine L5, the tray 7 is unlocked (not shown), and in subroutine L6, the tray 7 is unlocked.
Then, the carriage 1 is moved to the in position 191~ (FIG. 26(G)), and waits for manual operation of the operation switch.

Next, the operation when the eject 1/low 1 to switch 42 is operated to place a disk on the carriage S will be described. Note that, as shown in FIG. 27(A), the carriage S has now been brought to the loading position.

When the eject/load switch 42 is operated, the microcomputer 40 advances through the flowchart 1- in the stopped state shown in FIG. (FIG. 27(B)), the tray 7 is unlocked in subroutine L5 (not shown), subroutine L
2 to move the carriage S to the eject position (second
Figure 7 (C)).

When the disk D is placed on the carriage S that has been moved to the eject position (FIG. 27 (D)) and the eject/load switch 42 is operated again, the flowchart in the eject state shown in FIG. 18 (B) is activated. The program proceeds to step 5151 and subroutine LIO, and moves the tray 7 and carriage S to the loading position while decelerating the moving speed in section J (FIG. 6) (FIG. 27(E)).

The microcomputer 40 proceeds to steps 5210 and 5217, and
O is memorized as 1, and in subroutine L7, move the optical rad base 11 to the up position, put the disk D on the carriage S in standby (Fig. 27 (F)), and proceed to the flowchart for the stopped state (Fig. 9). , the operation switch must be operated manually.

Next, as shown in FIG. 28(A), without placing the disc on the carriage S at the eject position,
The operation when the eject 1/load switch 42 is operated will be explained.

When the eject/load switch 42 is operated, the microcomputer 40 advances the flowchart in the eject state shown in FIG.
(FIG. 6), the moving speed is reduced while moving to the loading position (FIG. 28(B)).

The microcomputer 40 proceeds to steps 5210 and 5211, and
o is memorized as O, and the process proceeds to step 5212. However, since the carriage is S, step 5212 becomes YES, and in subroutine L7, the optical Radbase 11 is moved to the up position (Fig. 28 (C)), and the flowchart in the stopped state is executed. The process advances to steps 1 to 1 (FIG. 9) and waits for input of the operation switch.

Next, the operation when the eject switch 42 is operated will be explained. As shown in FIG. 29(A), Carriage 1 is brought to the loading position, and disk D on carriage 1 is on standby.

When the eject/load switch 42 is operated, the microcomputer 40 proceeds through the flowchart 1 to 1 in the stopped state shown in FIG. move (Fig. 29(B)), subroutine L
In step 5, the tray 7 is unlocked (not shown), and in subroutine L2, the carriage 1 on which the disc D is placed is moved to the eject position (FIG. 29(C)).

When the disc D is taken out from the carriage 1 (FIG. 29(D)) and the eject/rot switch 42 is operated again, the flowchart 1- in the eject state shown in FIG. 18(B) is executed in step 5151. Proceeding to subroutine LIO, tray 7 and carriage 1 are moved to section S.
2 (FIG. 6), the moving speed is reduced while moving to the loading position (FIG. 29(E)).

The microcomputer 40 proceeds to steps 5210 and 5211, and
l is memorized as 0, step 5212, subroutine L
2 to move the carriage 1 to the store position (FIG. 29(F)).

Then, the microcomputer 40 proceeds to steps 5213 and 5214, and when n is 2, step 5214 becomes YES, and in subroutine L3, the stocker 14 is moved to position 2 (Fig. 29 (G
)), in subroutine L4, the carriage 2 is moved to the loading position (FIG. 29 (I-I)), and in subroutine L7, the optical rad base 11 is moved to the up position, and the disc D on the carriage 2 is put on standby (Fig. 29 (I-I)). Figure 29 (■)
).

Thereafter, in the same manner as above, remove the eject/load switch 4.
2 is operated, the carriage on which the disc is placed is moved to the eject position, and the disc is ejected.

Then, when the eject/load switch 42 is operated while the disk D on the last carriage 6 is on standby (FIG. 29(J)), the microcomputer 40 is placed in the stopped state shown in FIG. 9(A). Proceed to flowchart 1 in step S2 and subroutine L1, and in subroutine L1 the optical head base 11 is moved to the down position (
29(K)), the tray 7 is unlocked in subroutine L5 (not shown), and the carriage 6 on which the disc D is placed is moved to the eject position in subroutine L2 (FIG. 29(L)).

The disk D is taken out from the top of the carriage 1 that has been moved to the eject position (Fig. 29 (M)), and the eject 1 is ejected again.
When the ~/low switch 42 is operated, the state shown in FIG.
Flowchart 1 in the eject 1 state shown in B) proceeds to step 5151 and subroutine LIO,
The tray 7 and the carriage 1 are moved to the loading position while the moving speed is reduced in section S2 (Fig. 6).
Figure 29 (N)).

The microcomputer 40 proceeds to steps 5210 and 5211, and
6 as O, step 5212, subroutine L
2 to move the carriage 6 to the store position (FIG. 29(F)).

Then, the microcomputer 40 proceeds to steps 5213 and 5214, and when n=7, step 8216 becomes YES, and in subroutine L8, the stocker 14 is moved to position S (Fig. 29 (P
)), subroutine L4 moves the carriage S to the loading position (FIG. 29(Q)), and subroutine L7 moves the optical rad base 11 to the up position (FIG. 29(Q)).
R)), Flowchart 1-(Fig. 9) in the stopped state
The program will then proceed to wait for the input of the operation switch.

Next, as shown in FIG. 30(A), the carriage S
A single play operation when the playback switch 43 is operated while the upper disc is on standby will be explained. Note that the disk is placed only on the remaining carriages 2, 4, and 6.

When the playback switch 43 is operated, the microcomputer 40
The flowchart in the stopped state shown in FIG. 30(B) progresses through steps S3 and S90.891, and the playback mode is instructed. Waits for switch input or detection of end of playback of the last song.

When the reproduction of the last song is finished, the microcomputer 40 proceeds to steps 5235 and 5290 in the flowchart 1 in the reproduction state shown in FIG. 21(D), and instructs the stop mode (FIG. 30(C)). Step 5291 is YES
Flowchart in the stopped state (Fig. 9)
, and waits for the operation switch to be input again.

Next, as shown in FIG. 31(A), the carriage 2
The changer play operation when the playback switch 43 is operated while the upper disk is on standby will be described. Note that disks are placed only on the remaining carriages S, 4, and 6.

When the playback switch 43 is operated, the microcomputer 40
Flowchart 1- in the stopped state shown in Figure (B)
Steps S3, S90. The process advances to step S91, in which the playback mode is instructed (FIG. 31(B)), and the flowchart 1~ in the playback state shown in FIG.

When the reproduction of the final song is finished, the microcomputer 40 proceeds to steps S235 and 8290 in the flowchart in the reproduction state shown in FIG. 21(D), and instructs the stop mode (FIG. 31(C)), steps S291, S29
2. Proceed to S293.

When n is 4, the microcomputer 40 returns YES in step S293, moves the optical head bed 11 to the down position in subroutine L1 (FIG. 31 (D)), and moves the carriage 2 to the store position in subroutine L2 (FIG. 31 (E)). ), the stocker 14 is moved to position 4 in subroutine L3 (Fig. 31(F)),
In subroutine L4, carriage 4 is moved to the loading position (third
Also, in subroutine L7, the optical disc base 11 is moved to the up position, and the disc D on the carriage 4 is put on standby (FIG. 31 (H)). The program then proceeds to steps 8296 and S297, instructs the playback mode (FIG. 31(I)), waits for the input of the operation switch, and the detection of the end of playback of the final song.

When the reproduction of the last song is finished, the microcomputer 4o again proceeds to steps S235 and S290, and instructs the stop mode (FIG. 31(J)), and steps S291 and S29.
2. Proceed to S293.

When n is 6, the microcomputer 40 returns YES in step S293, and in subroutine L1 the optical hesode 11 is placed in the down position (Fig. 31 (K)), and in subroutine L2 the carriage 4 is placed in the store position (Fig. 31 (L)). , the stocker 14 is placed in position 6 in subroutine L3 (Fig. 31 (M)), and the carriage 4 is placed in the loading position in subroutine q L4 (Fig. 31 (N)).
Also, in subroutine L7, the optical rad base 11 is moved to the up position, and the disk D on the carriage 6 is put on standby (FIG. 31(0)). Then, proceed to steps 8296 and 5297 to specify the playback mode and enter the third step.
1 (P)), the system waits again for the input of the operation switch and the detection of the end of the playback of the last song.

When the playback of the last song is finished, the microcomputer 40 again proceeds to steps 5235 and 5290, and instructs the stop mode (FIG. 31 (Q)), and steps 5291 and 5292.
．． Proceed to 5293.

When n is 7, the microcomputer 40 returns YES in step 5295, moves the optical spatula 1 (vessel 11) to the down position (Fig. 31 (R)) in subroutine L1, and moves the carriage 6 to the 1-a position (Fig. 31 (R)) in subroutine L2. 31 (S)), the stocker 14 is moved to position S in subroutine L8 (Fig. 31 (T)).
), subroutine L4 moves the carriage S to the rotary position (
(Fig. 31 (U)), and in subroutine L7, the optical head l-' base 11 is moved to the up position, and the disk D on the carriage S is put on standby (Fig. 31 (V)).
. The program then proceeds to steps 8296 and 5297, instructs the playback mode (FIG. 31 (W)), and again waits for the operation switch to be input and the end of the playback of the last song to be detected.

When the playback of the last song is finished, the microcomputer 40 proceeds to steps 5235 and 5290 and instructs the stop mode (Fig. 31 (X)), and step 5291 becomes YES, and the flowchart for the stop state (Fig. 9) is executed. Go on,
The system waits for the operation switch to be input again.

In the above operation example, when there is no disc on the carriage S, the carriage S is moved to the loading position in subroutine L4 (FIG. 32 (A)), and subroutine L
At Step 7, the optical Radbase 11 is moved to the up position (Fig. 32 (B)), and since Step 8296 becomes NO, the flowchart 1- (No. 9
(Fig.) and waits for the operation switch to be input again.

Next, as shown in FIG. 33(A), the operation when the playback switch 43 is operated with the carriage S without a disc in the loading position and the optical rad base brought to the up position. Explain. Note that the disk is placed only on the remaining carriage 2.

When the playback switch 43 is operated, the microcomputer 40
The flowchart in the stopped state shown in Figure 33 (B) progresses through steps S90, 892 and S93, and when n is 2, Step 93 becomes YES, and in subroutine L1, the optical Radbase 11 is moved to the down position (Figure 33 (B)). ), subroutine L2 moves the carriage S to the store position (33rd
(C)), move the stocker 14 to position 2 in subroutine L3.
(Fig. 33 (D)), the carriage 2 is moved to the loading position in subroutine L4 (Fig. 33 (E)), and the optical rad base 11 is moved to the up position in subroutine L7, and the disk D on the carriage 2 is moved to the up position (Fig. 33 (D)). 33(F)) to enter the playback mode in step S91, proceed to flowchart 1 in the playback state (FIG. 21), enter the operation switch, and select the final song. Waiting for detection of end of playback.

When the playback of the last song is finished, the microcomputer 40 proceeds to steps 5235.5290 and instructs the stop mode (FIG. 33(H)), and steps 5291.5292.5.
Proceed to 293.

When n is 7, the microcomputer 40 returns YES in step 5295, moves the optical handle head 11 to the down position in subroutine L1 (Fig. 33 (I)), and moves the carriage 2 to the 1-a position in subroutine L2 (see Fig. 33 (I)). J)), the stocker 14 is moved to position S in subroutine L8 (Fig. 33 (K)).
, in subroutine L4, move the carriage S to the funnel position (
(Fig. 33 (L)), and the optical head base 11 is moved to the up position in subroutine L7 (Fig. 33 (M)).
)). Then, since step 8296 becomes No, the process proceeds to the flowchart in the stopped state (FIG. 9).
The system waits for the operation switch to be input again.

=73- Next, as shown in FIG. 34(A), the operation when a disk is placed on the carriage S at the eject position and the playback switch 43 is operated will be described. Note that no disks are placed on any of the carriages 1 to 6.

When the playback switch 43 is operated, the microcomputer 40
The flowchart in the ISIEX 1 to state shown in FIG. 8(C) proceeds to step 5153 and subroutine LIO, and the tray 7 and carriage S are moved to the loading position while decelerating the moving speed in section S2 (FIG. 6). (FIG. 34(B) Also, the microcomputer 40
0.8221, memorizes DO as 1, moves the optical Radbase 11 to the amplifier position in subroutine L7, and sets the disk D on the carriage S to standby.
(C)), the play mode is designated in step 5222 (Fig. 34 (D)), and the process proceeds to the flowchart in the play state (Fig. 21), waiting for the input of the operation switch and the detection of the end of play of the last song.

When the playback of the last song is finished, the microcomputer 40 proceeds to steps 5235 and 5290 in the flowchart in the playback state shown in FIG. YES
Flowchart 1-(Figure 9) in the stopped state
, and waits for the operation switch to be input again.

Next, as shown in FIG. 35(A), the operation when a disk is placed on the carriage 2 at the eject position and the playback switch 43 is operated will be described. Note that disks are placed on carriages S and 1.

When the playback switch 43 is operated, the microcomputer 40
The flowchart 1 in the ISIEX 1 to state shown in FIG. 8(C) proceeds to step 5153 and subroutine LIO, and the tray 7 and carriage 2 are moved to section S2 (FIG. 6).
The robot is moved to the load position while decelerating the moving speed (FIG. 35(B)).

Further, the microcomputer 40 proceeds to steps 5220 and 5221, stores D2 as 1, moves the optical rad base 11 to the up position in subroutine L7, and puts the disk D on the carriage 2 into standby (FIG. 35(C)). In step 5222, the playback mode is specified (see FIG. 35).
D)) The program proceeds to flowcharts 1 to 21 (FIG. 21) in the playback state, and waits for the input of the operation switch and the detection of the end of playback of the final song.

When the reproduction of the final song is finished, the microcomputer 40 proceeds to steps 5235 and 5290 in the flowchart 1- in the reproduction state shown in FIG. 21(D), and instructs the stop mode (FIG. 35(E)). Step 8291.52
Proceed to 92.5293.

When n is 7, the microcomputer 40 returns YES in step 5295, moves the optical head 11 to the down position in subroutine L1 (Fig. 35 (F)), and moves the carriage 2 to the store position in subroutine L2 (Fig. 35 (G)). , ), and in subroutine L8 move the stocker 14 to position S (Fig. 35 (I()
), the carriage S is moved to the loading position in subroutine L4 (FIG. 35(I)), and the optical head base 11 is moved to the up position in subroutine L7, and the disk D on the carriage S is put on standby (FIG. 35(I)). J))
. The program then proceeds to steps 8296 and 5297, instructs the playback mode (FIG. 35(K)), and again waits for the operation switch to be input and the end of playback of the final song to be detected.

When the playback of the last song is finished, the microcomputer 40 proceeds to steps 5235 and 5290 and instructs the stop mode (Fig. 35 (L)), and step 5291 becomes YES, and the flowchart for the stop state (Fig. 9) is executed. Go on,
The system waits for the operation switch to be input again.

In the above operation example, when there is no disc on the carriage S, the carriage S is moved to the loading position in subroutine L4 (Fig. 36 (A)'), and the optical base 1 is moved to the up position in subroutine L7. Let (
FIG. 36(B)) Then, step 8296 becomes No, the flowchart in the stopped state (FIG. 9) proceeds, and the process waits again for input of the operation switch.

Next, as shown in FIG. 37(A), the operation when the playback switch 43 is operated without a disk being placed on the carriage 2 at the eject position will be described.

Note that disks are placed on carriages S and 1.

When the playback switch 43 is operated, the microcomputer 40
The flowchart in the eject state shown in FIG. 8(C) proceeds to step 5153 and subroutine LIO, and the tray 7 and carriage 2 are moved to the loading position while decelerating the moving speed in section S2 (FIG. 6).
Figure 37(B)).

Further, the microcomputer 40 proceeds to steps 5220.5223, stores D2 as O, and also 5224.5225.
5226, n is 1, 8226 is YES, and subroutine L2 moves carriage 2 to the store position (37th
In subroutine L8, the carriage 1 is set to the loading position (Fig. 37(E)), and in subroutine L7, the carriage 1 is set to the load position (Fig. 37(E)). Move the head base 11 to the up position, put the carriage 1'' second disk D on standby (Fig. 37 (F)), and follow the flowcharts 1 to 1 (in the stopped state).
The process advances to FIG. 9) and waits for input of the operation switch.

Next, the operation when the playback switch 43 is operated without a disc being placed on the carriage 1 at the eject position will be described. Note that no disks are placed on any of the remaining carriages.

When the playback switch 43 is operated, the microcomputer 40
The flowchart 1 to 1 in the eject state shown in FIG. 8(C) proceeds to step 5153 and subroutine LIO, and the tray 7 and carriage 1 are moved to the loading position while decelerating the moving speed in section 32 (FIG. 6). (Figure 38(B)).

The microcomputer 40 proceeds to steps 5220 and 5223, and
l is memorized as O, and 5224, S225.822
6, n is 7, 8228 is YES, and subroutine L2 moves the carriage 1 to the 1-a position (Fig. 38 (
C)), the stocker 14 is moved to position S in subroutine L8 (Fig. 38 (D)), and the carriage S is moved to position S in subroutine L4.
to the load position (Fig. 38 (E)), and in subroutine L7 move the optical Radbase 11 to the up position, proceed to the flowchart for the stopped state (Fig. 9), and wait for the input of the operation switch again. .

Next, as shown in FIG. 39(A), the carriage 3
The operation when the carriage S selection switch 45 is operated while the upper disk is on standby will be described. Note that a disk is placed on the remaining carriage S, 2.6.

When the carriage S selection switch 45 is operated, the microcomputer 40 executes the flowchart in the stopped state shown in FIG.
1 and move the optical head base 11 to the down position (3rd
9 (B)), subroutine L2 moves the carriage 3 to the store position (Fig. 39 (C)), subroutine L8 moves the stocker 14 to position S (Fig. 39 (D)), subroutine L4 loads the carriage S. in position (Fig. 39 (E))
Also, in subroutine L7, the optical rad base 11 is moved to the up position, the disk D on the carriage S is put on standby (FIG. 39(F)), and the operation waits for the input of the operation switch.

Next, as shown in FIG. 40(A), the carriage S
The operation when the carriage 1-6 selection switch 46 is operated while the upper disk is on standby will be described. Note that a disk is placed on the remaining carriage 2.6.

When the carriage 1-6 selection switch 4G is operated, the microcomputer 40 executes the flowchart in the stopped state shown in FIG. 9(D) at step S55.
．． Proceed to step 5132, n is 2 and step 5132 is YES
, the optical rad base 11 is moved to the down position in subroutine L1 (Figure 40 (B)), the carriage S is moved to the store position in subroutine L2 (Figure 40 (C)), and the stocker 14 is moved to position 2 in subroutine L8. (Figure 40 (D))
, in subroutine L4, the carriage 2 is moved to the load position (fourth
In addition, the subroutine L7 moves the optical head base 11 to the up position, and the disk D on the carriage 2 is placed on standby (FIG. 40(F)).

When the carriage 1-6 selection switch 46 is operated again, the microcomputer 40 executes steps S5.5130.5135.
．． Proceed to 5136, n is 6 and step 5137 is YES
, the optical rad base 11 is moved to the down position in subroutine L1 (Figure 40 (G)), the carriage 2 is moved to the store position in subroutine L2 (Figure 40 (H)), and the stocker 14 is moved to position 6 in subroutine L8. (Figure 40 (■)
), subroutine L4 moves the carriage 6 to the loading position (
In subroutine L7, the optical disc base 11 is moved to the up position, and the disk D on the carriage 6 is put on standby (FIG. 40(K)).

When the carriage 1-6 selection switch 46 is operated again, the microcomputer 40 executes steps S5.5130.5135.
．． Proceed to 5136, n is 2 and step 5137 is YES
Then, in subroutine L], move the optical base 1 to the down position (Fig. 40 (L)), in subroutine L2, move the carriage 6 to the store position (Fig. 40 (M)), and in subroutine L8, move the slider base 1 to the down position (Fig. 40 (M)). in position 2 (Fig. 40 (
N)), in subroutine L4, the carriage 6 is moved to the loading position (FIG. 40 (○)), and in subroutine L7, the optical rad base 11 is moved to the up position, and the disk D on the carriage 2 is put on standby (Fig. 40). Figure (P))
.

Thereafter, in the same manner as above, the carriage 1-6 selection switch 4
Each time 6 is operated, the carriage 2.6'' puts the two disks on standby alternately.

The typical operation examples of the device of the present invention have been described above, but operations other than the above-mentioned operation side are performed in the same manner as described above, and FIGS.
Flowchart 1-1 in the stop state shown in D), Flowchart 1-1 in the eject 1 state shown in FIGS. Since it can be understood by referring to flowcharts 1 to 1 in the state, the description thereof will be omitted.

Note that the above flowchart is described to explain the principle operation, and changes can be made without departing from the spirit of the present invention. In particular, once the switches 41 to 46 for selecting the operation mode are operated, the receiver cannot be attached again until the mechanism operation according to flowchart I~ is completed, but in the actual product, each Needless to say, the switches 41 to 46 are programmed to be able to be connected even when the mechanism is operating. In particular, since the carriage S selection switch 45 and the carriage 1-6 selection switch 46 are often operated before the mechanism operation is completed, the program is programmed to ensure that the mechanism operation based on the switch operation is performed even during operation. be done.

For example, even if you operate the carriage S selection switch 45 and immediately operate the carriage 1-6 selection switch 46 twice while the disk in carriage 5'' is on standby, the disk on carriage 2 will not be programmed to be on standby. Ru.

Note that the device of the present invention is not limited to the above-mentioned embodiment and can take various forms. For example, in the above-mentioned embodiment, the tray 7 is moved between the eject position and the load position, and Although the mechanism for moving the carriage between the load position and the store position is performed by a single tray/carriage moving mechanism 22, it may be configured to move the tray/carriage by separate mechanisms.

Further, in the above embodiment, the disk on the carriage is clamped by moving the optical head to the up position, but conversely, the disk on the carriage is clamped by moving the carriage and clamper down. may be configured.

Further, although a total of seven carriages are used in the above-mentioned apparatus, it goes without saying that the number of carriages is not limited to this.

[Effects of the Invention] As explained above, according to the device of the present invention, although it is a changer-type playback device, it can be operated with the same feeling as a single-player type playback device, and it can also be operated as a changer-type playback device. The number of continuous playback discs may differ from the maximum number of discs that can be stored.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing an outline of the mechanism of the device of the present invention, Fig. 2 is an operational diagram showing the moving positions of the 1-ray 7 and carriage S, and Fig. 3 shows the moving position of the optical heel rad base 11. 4 is an operation diagram showing the moving position of the stocker 14, FIG. 5 is a block diagram showing the operation control circuit in the device of the present invention, and FIG. 6 is a detection switch and detection signal for the moving position of the carriage. 7 is a timing chart showing the states of the detection switch and the detection signal with respect to the moving position of the optical head base 11, and FIG. 8 is a timing chart showing the state of the detection switch and the detection signal with respect to the moving position of the switch 14. Timing chart 1-1 showing the state. Figures 9 to 21 are flowchart 1. Figure 22 is timing chart 1 for the load position detection signal LOAD.
~A timing chart showing changes in the states of the signal FRONT and the rear signal REAR, and Figures 23 to 40 are diagrams illustrating the operation of the device of the present invention, respectively. Explanation of symbols S, 1 to 6... Carriage, 7... Tray, 8...
Disk mounting table, 9... Spindle motor, 10...
- Optical head, 11... Optical head base, 12... Macnet clamper, 13... Disc sensor, 14
...Stocker, 15-21...Slot, 22...
Tray/carriage movement mechanism, 23...Tray motor, 24...Front panel, 25...Eject I~
Position detection switch, 26... Load position detection sensor, 27 - Store position detection switch, 28 Optical head base vertical mechanism, 29... Clamp motor, 30...
Tray lock mechanism, 31...Up position detection switch, 32...Down position detection switch, 33...Lock release detection switch, 34...S1 to Tsuka movement mechanism, 3
5...Stocker motor, 36...S1~Tsuka position detection sensor, 37 Reference position detection switch, 40・Microcomputer, 41・S1~Tsu switch, 42...Eject/load switch, 43...Regeneration switch , 44
- Stop switch, 45... Carriage S selection switch, 46... Carriage 1-6 selection switch, 47... Tray motor drive circuit, 48 - Clamp motor drive circuit,
49... Stocker motor drive circuit, D disk, R1
-R14...Resistance.

Claims (1)

[Scope of Claims] n number of carriages, each of which is provided with a disk mounting portion on which a disk can be placed; a tray provided with a single slot into which the carriage can be inserted and removed; and any one of the carriages. tray moving means for moving the tray into which the two carriages are inserted between an eject position in which it projects outside the apparatus and a load position in which it is stored in the apparatus;
a stocker having n slots, and stocker moving means for moving the stocker to n positions where each slot of the stocker is at the same height as a slot of the tray brought to the loading position; a carriage moving means for moving the carriage between the tray brought to the loading position and the stocker brought to any of the n positions; a disc reproducing means for reproducing a disc on a carriage inserted into the carriage; and a disc reproducing means for reproducing a disc on a carriage inserted in the carriage; a moving means for mounting a disc on the disc reproducing means; a first carriage selection switch for selecting one predetermined carriage from among the n carriages; and a plurality of carriages other than the predetermined carriage. A changer-type disc playback device comprising: a second carriage selection switch for selecting one of the carriage selection switches; and a control means for controlling each of the moving means based on the operation of the first and second carriage selection switches; The apparatus selects a predetermined one of the n carriages by operating the first carriage selection switch, and in the subsequent playback operation, only the disc on the carriage is selected. This is a single-play operation for playback, and by operating the second carriage selection switch, a desired carriage other than the predetermined carriage is selected, and in the subsequent playback operation, a desired carriage is selected on the carriage. A changer-type disc characterized in that, after the reproduction operation of the disc is completed, a changer play operation is performed in which a plurality of discs on the carriage after the carriage and the discs on the predetermined carriage are sequentially reproduced. playback device.