JPH02162562A - Disk changer - Google Patents

Abstract

PURPOSE:To reduce the burden of a user by providing a temporary housing space for one disk, and controlling a moving order based on designation data caused by a replace source designating part and a replace destination designating part and the data of an idle state deciding part. CONSTITUTION:An idle state deciding part 58 decides the idle state of housing spaces R1-R6 in a cartridge C and outputs decision data to a moving order setting part 82. When the designation data are inputted from a replace source designating part 83 and a replace destination designating part 84, the designation data of a replace source and a replace destination are inputted to the set part 82. The set part 82 sets the replacing order of a disk D based on the designation data and the decision data inputted from the deciding part 85. According to the set order, a control part 81 controls a lift operating part 60. In the case of replacement, the lower side temporary housing space R6 in the cartridge C is utilized.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a system between a cartridge mounting part into which a disc cartridge containing a plurality of discs is mounted and a disc reproducing part which reproduces recorded data on a recording disc. To,
The present invention relates to a disc changer equipped with a disc transfer mechanism.

[Prior art] This type of disc changer automatically loads specified compact discs one by one into a disc playback unit from a disc cartridge containing six optically recorded compact discs and plays them once. There is something to do.

Conventionally, in such a disc changer, a loaded disc is unloaded into a disc cartridge so as to be returned to its original disc storage space. That is, the storage space for the disk cartridge from which the disk was taken out and the storage space for the disk cartridge to which the disk was returned were the same, and the disk was automatically returned to the original storage space in the disk cartridge.

[Problems to be Solved by the Invention] As described above, the conventional disc changer unloads the loaded disc into the original storage space in the disc cartridge.

Therefore, the storage positions of the plurality of disks in the disk cartridge are always constant and do not shift.

Typically, such a disc changer has a function of specifying the loading order of a plurality of discs in a disc cartridge and reproducing recorded data on the discs in accordance with the designated order. By utilizing such a function, the user can load the discs in a desired order and reproduce the recorded data, regardless of the storage position of the discs in the disc cartridge.

When using such a function to specify the loading order of discs, it is necessary to know the relationship between the recorded contents and their storage positions for all discs in the disc cartridge. becomes. Therefore, normally, multiple discs are stored in a disc cartridge in advance in a predetermined basic order, and the discs are simply loaded in order from the top, or the discs are simply loaded in order from the bottom. There is. In this way, in the case of loading in a simple order, in order to change the loading order of the discs, it is necessary to replace the plurality of discs in the disc cartridge and change their storage positions.

Conventionally, when replacing a disc in a disc cartridge, the disc cartridge is first removed from the cartridge mounting portion of a disc changer, and then the disc is replaced manually.

However, such manual disk replacement work is extremely troublesome. In particular, when the control section of the disc changer and the cartridge mounting section are separated, it is extremely troublesome to once remove the disc cartridge from the cartridge mounting section.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a disc changer that can automatically replace discs in disc cartridges.

[Means for Solving the Problems] (1) The disc changer according to the first claim includes a cartridge mounting portion into which a disc cartridge storing a plurality of discs is mounted, and a disc that reproduces recorded data on the recording disc. In a disc changer equipped with a disc transfer mechanism between the playback unit and the disc cartridge, there is provided a disc changer which specifies a disc storage space from which to replace a disc in the disc cartridge, and a disc changer which designates a disc storage space from which to replace a disc in the disc cartridge; a temporary storage space for at least one disk set in the disk cartridge; and a temporary storage space for at least one disk set in the disk cartridge; a transfer order for disk replacement based on an empty status determination unit that determines the empty status of the temporary storage space, data specified by the replacement source designation unit and replacement destination designation unit, and determination data by the availability determination unit; The present invention is characterized in that it comprises a transfer order setting section that sets the transfer order, and a control section that controls the transfer mechanism according to the transfer order set by the transfer order setting section.

(2) The disc changer according to the second aspect is a disc cartridge that stores a plurality of discs.

In a disc changer that is equipped with a disc transfer mechanism between a cartridge loading section into which a disc is loaded and a disc playback unit which plays back recorded data on a recording disc, a replacement source for replacing a disc in a disc cartridge is used. A replacement source specification section for specifying a disk storage space; a replacement destination specification section for specifying a destination disk storage space for replacing a disk in a disk cartridge; a temporary storage space, a disk storage space for a disk cartridge installed in the cartridge mounting section;
an empty state determination section that determines the empty state of a temporary storage space in the disk changer main body; and data specified by the replacement source designation section and replacement destination designation section, and determination data by the vacant state determination section, and replaces the disk. The present invention is characterized in that it comprises a transfer order setting section that sets a transfer order for the transfer, and a control section that controls the transfer mechanism according to the transfer order set by the transfer order setting section.

[Function] The disc changer of the present invention has a temporary storage space for at least one disc set inside the disc cartridge or inside the main body of the disc changer, and uses this temporary storage space to provide a temporary storage space for the disc changer. A disk transfer mechanism replaces the disks. This automatically replaces discs, which was conventionally done manually, and reduces the burden on the user.

[Example code] Embodiments of the present invention will be described below based on the drawings.

1 to 9 are diagrams for explaining the first embodiment.

The disc changer of this embodiment is an example of application as a compact disc changer (hereinafter referred to as rCD changer).

A CD changer selectively loads one compact disc from a cartridge containing a plurality of compact discs and reproduces data recorded on the compact disc. In the case of the CD changer of this embodiment, its mechanical configuration is the same as that of the existing one.

First, the mechanical structure of the CD changer will be explained (see FIGS. 4 to 9).

The CD changer is composed of a cartridge mounting section A and a disc playing section (disc playback section) B. A disc cartridge C is mounted into the cartridge mounting section A by being pushed in from the front. A plurality of discs D are stored in the disc cartridge C.

Disc playing section B to cartridge mounting section and unit Y
What is this unit Y? It is floatingly supported by the casing 20 by I number of floating dampers 10. The unit Y is surrounded by the ceiling plate 1, the bottom plate 2, and the side plates 3.4, and the housing 20 is constituted by a bottom housing 21 and side housings 22.23 fixed thereto. The floating damper 10 is a rubber bag filled with air, liquid, etc.

In this example, the unit Y is suspended by the suspension spring 11 assuming that the bottom housing 21 is placed in a horizontal position.

The cartridge mounting section A is installed on the left side of the unit Y in FIG. 4, and a cartridge table 30 fixed to the bottom plate 2 is located below it. Suppression rollers 32 that are urged downward by leaf springs 31 are provided at the front and rear portions of the ceiling plate 1, and the disk cartridge C remains pressed against the cartridge full 30 by these suppression rollers 32. The tubes are guided by the cartridge table 30 and loaded. When installing it, the groove 40 provided on the bottom surface of the disk cartridge C (see FIG. 8, upside down) is guided by the three guide pins 33 (see FIG. 5) on the cartridge table 30, and Both edges of the lower end of the disk cartridge C are guided by the left and right guide pieces 34 of the cartridge table 30.

A lock window 35 is provided in the center of the cartridge table 30, and a lock window 35 is provided at the bottom of the cartridge table 30.
A lock member 36 is attached which projects upward from the lock window 35 by the urging force of a spring (path shown). When the disc cartridge C is installed, this lock member 36 fits into the lock recess 41 (see FIG. 8) on the lower surface of the disc cartridge C to lock the disc cartridge C in a fixed position, and also locks the disc cartridge C in place. When the disk cartridge C is ejected, the disk cartridge C is unlocked by being displaced downward from the lock window 35.

Further, a sliding lever 37 is attached to the lower side of the cartridge table 3o so as to be slidable along the force directions Xa and Xb in FIG. A pressing piece 37a at the rear end of this sliding lever 37 protrudes upward from the cart lithography/table 30, and when the disk cartridge C is installed, the tip of the disk cartridge C is pressed against the Xa
When the disc cartridge C is ejected by being pushed in the force direction, the disc cartridge C is pushed out in the xb force direction and ejected forward.

The disk performance section B has a disk drive unit 5 installed in the lowest part of the unit Y on the right side in FIG. The disk drive unit 5 includes a turntable 6.
, an optical pickup 7, and a clamper support member 8, the disk D clamped on the turntable 6 is rotated together with the turntable 6, and the optical pickup 7 is caused to seek along the guide shaft 9. It is designed to read out the data.

A lifting/lowering operation section (disc transport mechanism) 60 configured as shown in FIG. 6 is provided above the disk playing section B. This lifting/lowering operation section 6o is designed to move up and down as a whole, and functions as follows.

■Disc loading function Pull out a specific disc D horizontally from the cartridge C installed in the cartridge mounting part A, position it above the disc playing part B, and then lower the disc D to place it above the disc playing part B. Clamp it onto the turntable 6.

■ Disc unloading function Contrary to the case of loading, the disc D is unclamped, the disc D is lifted from the turntable 6, and then the disc D is returned to its original position in the cartridge C.

The entire lifting/lowering operation section 60 is raised and lowered by lifting mechanisms 50 (see FIGS. 4 and 5) provided at three locations within the unit Y. Each lifting mechanism 50 has a guide shaft 51 that fits into a guide hole 61 of the lifting operation section 60.
A lifting screw 52 is provided which screws into a female threaded hole 61 of the lifting operation section 60. A gear 53 is attached to the lower end of each lifting screw 52, and a total of three
The two gears 53 are rotationally driven synchronously by a drive mechanism (as shown) provided below the unit Y. Therefore, a total of three lifting screws 52 move the lifting/lowering operation section 60 up and down in accordance with the synchronous rotation amount of the gear 53.

Here, the configuration of cartridge C will be explained.

FIG. 9 is a perspective view of the cartridge C upside down.
In the figure, 42 is a case, and 43 is a bottom cover. The inside of the case 42 is partitioned into a plurality of storage spaces by a partition plate 43, and a disc D is stored in each storage space. In this example, a total of six storage spaces are formed, of which the upper five accommodate disks D, and the lower one is left empty. A total of six storage spaces have a similar configuration, and a disc D can be stored in each of them. That is, the disk D is a triangular leaf spring 4.
4, and as the ejector 45 corresponding to each disk D rotates around the shaft 46, the disk D corresponding to the ejector 45 climbs over the leaf spring 44, and as shown in FIG. Ya inside
It is designed to be pushed out in the direction of the force. Conversely, when the disk D is inserted into the cartridge C from the direction Yb in FIG. 9, the disk D overcomes the leaf spring 44 and is maintained at the original storage position again.

The elevating operation section 60 performs the loading operation and unloading operation as follows, assuming that such a cartridge C is installed in the cartridge mounting section A.

■Loading operation Depending on the storage position of the disk D to be pulled out from the cartridge C, the entire elevating operation section 60 moves up and down, and the disk suppressing piece 64 of the disk ejecting member 63 faces the rear of the ejector 45 corresponding to the disk D. . Thereafter, the disk ejection member 63 once slides in the Ya force direction in FIGS. 6 and 9, and then returns to the opposite Yb direction. When the disk ejecting member 63 slides in the Ya force direction, the disk suppressing piece 64 pushes out the disk D in the same direction. The disk ejecting member 63 is driven by a power conversion device 65 composed of a plurality of gear trains using a motor (not shown) as a drive source.
Slides back and forth.

The pushed-out disk D is moved by the leaf spring 44 as shown in FIG.
, and is inserted between the upper and lower pull-out rollers 67 and 68 by the restoring force of the leaf spring 44. The upper pull-out roller 67 rotates while being urged downward by the spring 69, and pulls out the disk D in the Ya force direction. The pull-out roller 67 is rotationally driven by the power conversion device 65, and stops when the disk D is completely pulled out into the elevating/lowering section 60.

Thereafter, the elevating/lowering section 60 descends together with the disc D to the lowest performance position. At the performance position, the disc D is placed on the turntable 6 of the disc performance section B, and the clamper 70 clamps the disc D. At that time, the rear end 71a of the clamper 71 that rotatably supports the clamper 70 hits the clamper support member 8 of the disk drive unit 5, and the clamper 71 swings about the support pin 72, and as a result of the swinging, Clamper 7
0 clamps disk D.

Also, in this performance position, the upper pull-out roller 6
7 hits the roller regulating piece 2a of the bottom plate 2 and is separated from the lower pull-out roller 68 against the spring 69.

As a result, the disc D is in a free state on the turntable 6.
Then, the disc playing section B reads out the data on the disc D.

■Unloading operation The lifting/lowering operation section 60 rises from the lowest performance position.

At this time, the rear end 71a of the cutter prepper 71 separates from the ramper support member 8, and while the clamping of the disk D by the clamper 70 is released, the disk D rises together with the elevating portion 60. Further, the upper pull-out roller 67 separates from the roller regulating piece 2a, and the disc D is sandwiched between the pull-out roller 67 and the lower pull-out roller 68.

The lifting/lowering operation section 60 moves up to the original position where the disk D was pulled out from the cartridge C.

Thereafter, the upper pull-out roller 67 is reversely rotated to feed out the disk D in the Yb direction in FIGS. 6 and 9. As a result, the disk D is returned to its original position in the cartridge C.

Next, the characteristic parts of the control system of the CD changer mechanically constructed as described above will be explained (see FIGS. 1 to 3).

Reference numeral 81 denotes a control section of the lifting/lowering operation section (transfer mechanism) 60. This control section 81 controls the elevating operation section 60 and uses the loading and unloading operations of the disk D to replace the disk D stored in the cartridge C. As mentioned above, in the loading operation of the disk D, from the disk storage space of the cartridge C installed in the cartridge mounting section,
One disk D is selected and pulled out, and in the unloading operation of disk D, the disk D
is returned to the disk storage space of cartridge C. The control section 81 replaces the disk D in the cartridge C by utilizing the movement of the disk D by the elevating operation section 60.

The replacement procedure follows the transfer order set in the transfer order setting section 82.

In this example, the cartridge C has a total of six disc storage spaces R1, R2, R6 (third
(see figure) is formed. Of these, the upper five storage spaces R1, R2, . . . R5 are used as normal storage spaces, and the lower one storage space R6 is an empty space. Therefore, a maximum of five discs D can be stored in the cartridge C using the storage spaces R1, R2, . . ., R5. In the following, the upper five storage spaces R1, R2...R5
is referred to as a "disc storage space", and the lower one storage space R6 is referred to as a "-time storage space".

The transfer order setting unit 82 sets the transfer order of the disks D based on the data input from the replacement destination designation unit 83, the replacement destination designation unit 84, and the free state determination unit 85.

In this example, the replacement destination designation section 83 and the replacement destination designation section 84 are integrally configured as shown in FIG. It is now possible to specify the source disk storage space and the destination disk storage space.

In the same figure (a), 86 is an operation panel, and on the surface of the operation panel, there are five numbers rl for displaying the replacement light.
J, r2J... "5" is written in a horizontal line. These five numbers correspond to the upper five disk storage spaces R1, R2, . . ., R5 in the cartridge C. Also, below these five numbers, there are a total of 5
A display unit (e.g., liquid crystal display unit) 87 for switching light display in which two display surfaces 87a, 87b, . 88a, 88b...88e are provided. Further, a set switch 89 is provided on the operation panel 86.

On the other hand, the empty state determination section 85 determines whether the cartridge C is mounted in the cartridge mounting section.
5 disk storage spaces R1゜R2...R5
Then, the vacant state of one temporary storage space R6 is determined. Specifically, each storage space R1, R2,
. . . It is possible to adopt a configuration using an optical detection means or the like that directly detects the presence or absence of the disk D in R6.

Next, the operation of the control system configured as described above will be explained.

Now, the cartridge C installed in the cartridge installation part A has five disk storage spaces R1, R2...
It is assumed that a disk D is stored in each space R5, and that no disk D is stored in the -time storage space R6. In this example, it is assumed that the disks D in the disk storage space R1 and the disk D in the disk storage space R3 are exchanged.

The empty state determining unit 85 determines the empty states of the storage spaces R1, R2, . . . , R6 in the cartridge C, and outputs the determination data to the transfer order setting unit 82. Also,
Data specifying the source and destination of the disk D to be replaced is manually entered from the replacement destination designation section 83 and the replacement destination designation section 84, which are integrally configured as shown in FIG. 2(a). For that purpose, first touch switches 88a, 88b...8
Touch 8e. a display surface 87a for displaying the replacement destination;
87b...87e are the corresponding touch switches 88
a, 88b...... Each time 88e is touched, the display content, that is, the replacement destination of disk D changes to rlJ, r.
2J...r5J, rlJ, r2J...
and changes sequentially.

The numbers to be replaced with these are NJ, r2j...
5" is the disk storage space R1, R2...R5
corresponds to

As in this example, when exchanging the disks D in the disk storage space R1 and disk storage space R3, as shown in FIG.
As shown in b), the display surfaces 87a, 87 for displaying the replacement destination
b...Set the display contents of 87e. In other words, these two display contents are the current disk storage space R1 (
Put the disk D stored in the disk storage space R3 (the replacement source) into the disk storage space R3 (the replacement source), put the disk D currently stored in the disk storage space R3 (the replacement source) into the disk storage space R1 (the replacement destination), This means that the other disks D are not replaced. After setting the display contents like this, set it.

Shout out Chi89. As a result, data specifying the source and destination of disk replacement is input to the transfer order setting unit 82.

The transfer order setting unit 82 sets a replacement procedure for the disk D based on data specifying the source and destination of the disk and the determination data of the free state inputted from the free state determining unit 85. Then, the control section 81 controls the lifting/lowering operation section 60 according to the set procedure. When replacing the cartridge, the temporary storage space R6 on the lower side of the cartridge C is used.

In this example, the procedure for replacing disk D is shown in Figure 3(a).
, (b), and (C).

That is, as shown in FIG. 2(a), the elevating unit 60 first pulls out the disk D in the first disk storage space R1 to the right, then descends and inserts the pulled out disk D into the temporary storage space R6. .

The former operation of pulling out the disk D is part of the loading operation by the above-mentioned elevating operation section 60, and the latter operation of inserting the disk D is a part of the loading operation by the above-mentioned elevating operation section 6.
0 is part of the unloading operation. Similarly, the operation of pulling out the disk D from the cartridge C is part of the loading operation, and the operation of inserting the disk D into the cartridge C is part of the unloading operation.

Next, as shown in FIG. 6(b), the elevating unit 60 pulls out the disk D in the third disk storage space R3 to the right, rises, and places the pulled out disk D in the first disk storage space. Insert into space R1.

Next, as shown in the same figure (C), the elevating operation unit 60 pulls out the disk D in the temporary storage space R6 to the right, then rises and inserts the pulled out disk D into the third disk storage space R3. .

In this way, the temporary storage space R in the cartridge C
6, the disk D in the disk storage space R1 and the disk D in the disk storage space R3 are exchanged as initially. The transfer order setting unit 82 sets a procedure for executing such a replacement operation.

FIG. 10 is a diagram for explaining an embodiment in which a temporary storage space R6 corresponding to the above-mentioned temporary storage space R6 is set inside the main body of the disc changer.

In this example, the time storage space RQ is set on the turntable 6, and the disc D is replaced using this time storage space RO. Therefore, the elevating/lowering operation section 60 is configured to be able to transfer another disk D while leaving the disk D on the turntable 6. Further, the transfer order setting unit 82 is configured to control the -time storage space RO
A procedure for exchanging the disks D as originally set is set using the above procedure, and the control section 81 controls the elevating operation section 81 according to the procedure.

10(a), (b), and (c) are explanatory diagrams of the operation when replacing the disk D in the first disk storage space R1 with the disk D in the third disk storage space R3. be. In addition, in the case of this embodiment, the cartridge C
Since there is no need to set up a temporary storage space within the cartridge C, all the storage spaces R1, R2, . . .
...Disc D is stored in R6.

In order to replace the disk D, first, as shown in FIG. 2(a), the elevating unit 60 pulls out the disk D in the first disk storage space R1 to the right, then descends and turns the pulled out disk D. Temporary storage space R above table 6
Place it in Q (.

Next, as shown in FIG. 6(b), the elevating unit 60 pulls out the disc D in the third disc storage space R3 to the right, moves upward, and moves the pulled out disc D into the first disc storage space. Insert into R1.

Next, as shown in <c> of the same figure, the elevating unit 60 holds the disk D in the temporary storage space RO, moves up, and inserts the held disk D into the third disk storage space R3.

In this way, the temporary storage space R in the cartridge C
Using O, the disk D in the disk storage space R1 and the disk D in the disk storage space R3 are exchanged as initially. The transfer order setting unit 82 sets a procedure for executing such a replacement operation.

FIG. 11 is a diagram for explaining an embodiment configured to automatically designate the source and destination of disk replacement according to the recorded data of disk D.

In the figure, reference numeral 91 denotes a disk recorded data determining section, which determines the recorded contents of all disks D stored in cartridge C.

For example, if a music song is recorded on disk D, the type of the song (for example, march, waltz, etc.) is determined from the tempo of the song. To make this determination, it is necessary to load disk D and check the songs at least once. In that case, just checking the beginning of the song is sufficient.

Reference numeral 92 denotes a disc storage position setting unit, which sets the storage position of each disc D according to the recorded content of the disc D determined by the determination unit 91. For example, depending on the type of musical pieces recorded on the disc D, storage positions are set so that similar pieces of music are grouped together.

Based on the storage position of the disk D set in the setting section 92, the replacement destination specifying section 83 specifies the source of the disk D to be replaced, and the replacement destination specifying section 84 specifies the destination of the disk D. These specifying units 83 and 84, unlike those in the embodiment shown in FIG. That is, the storage position of the disc D before replacement is compared with the storage position of the disc D set in the setting section 92, and the replacement source and replacement destination are designated.

The other configurations are the same as those shown in FIG. 1 described above.

In the case of the embodiments shown in FIGS. 12(a) and 12(b), a new insertion space for the disk D is provided in the changer body, and the disk D can be replaced by inserting and removing the disk D from this insertion space S. It looks like this.

That is, the elevating unit 60 has the following function of transferring the disk D between three locations.

■Between insertion space S and turntable 6.

Therefore, as shown in FIG.
The disk D inserted from the insertion space S can be loaded and clamped onto the turntable 6, or conversely, the disk D on the turntable 6 can be unloaded and taken out from the insertion space S.

■Cartridge C storage space R1, R2...R6
and turntable 6.

Therefore, the elevating operation section 60 selectively loads the disc D in the cartridge C and lifts the turntable 6.
It can be clamped on top, or vice versa, and unloaded.

■Insertion space S and cartridge C storage space R1, R
2... Mutual with R6.

Therefore, as shown in FIG.
The disk D inside the cartridge C can be selectively pulled out and taken out from the insertion space S, or vice versa, the disk D inserted from the insertion space S can be moved into the storage spaces R1, R2, . . ., R6 of the cartridge C. You can selectively insert it into the

Such an elevating/lowering operation section 60 takes the disc D in the disk storage space to be replaced out of the insertion space S and empties the storage space to be replaced.
The disk D in the disk storage space to be replaced is moved to the storage space to be replaced.

In this way, the insertion space S is used to replace the disk D. Naturally, the exchange order is set by the transfer order setting unit 82, as in the above-described embodiment.

[Effects] As explained above, the disc changer of the present invention has a temporary storage space for at least one disc set inside the disc cartridge or inside the main body of the disc changer, and uses this temporary storage space. Since the disk transfer mechanism provided in the disk changer is configured to change disks, it is possible to automatically change disks, which was conventionally done manually, reducing the burden on the user. Can be done.

Particularly when the control unit of the disc changer and the cartridge mounting unit are located far apart, discs can be replaced by remote control.

[Brief explanation of the drawing]

The drawings are diagrams for explaining one embodiment of the present invention,
Figure 1 is a block diagram of the main control system, Figure 2 (a)
, (b) is a surface view of the designation section for the source and destination of disk replacement, Figures 3 (a), (b), and (C) are diagrams explaining the operation of the control system, and Figure 4 is a perspective view of the entire device. Figure 5 is a perspective view of the cartridge mounting section and disc playing section, Figure 6 is a perspective view of the elevating section, Figure 7 is an enlarged front view of the cartridge in the installed state, and Figure 8 is the disc cartridge upside down. FIG. 9 is a plan view for explaining the disk loading operation. FIGS. 1O (a), (b), and (c) are explanatory diagrams of the operation of the control system in another embodiment of the present invention. FIG. 11 is a block diagram of a main control system in still another embodiment of the present invention. FIGS. 12(a) and 12(b) are operation explanatory diagrams of still another embodiment of the present invention. 84... Replacement destination designation section, 85... Empty status determination section, A... Cartridge installation section, B... Disc performance section (disc playback section), C
...Cartridge, D...Disc, R1, R2...R5...Disk storage space, R6, RO...-Time storage space .

Claims (2)

[Claims] (1) In a disc changer that is equipped with a disc transport mechanism between a cartridge mounting section into which a disc cartridge containing a plurality of discs is mounted and a disc playback section which plays back data recorded on the recording disc, an exchange source designation section for specifying a source disk storage space for exchanging a disk in a cartridge; an exchange destination specification section for specifying a destination disk storage space for exchanging a disk in a disk cartridge; a temporary storage space for at least one disc set to 1, an empty state determination section that determines the empty state of the disk storage space and the temporary storage space with respect to the disk cartridge installed in the cartridge mounting section, and the replacement source designation section. a transfer order setting unit that sets a transfer order for disk replacement based on specified data by the replacement destination specifying unit and judgment data by the free status judgment unit; Accordingly, a disc changer comprising a control section for controlling the transfer mechanism. (2) In a disc changer that is equipped with a disc transport mechanism between a cartridge mounting section into which a disc cartridge containing a plurality of discs is mounted and a disc playback section that plays back data recorded on the recording disc, the disc an exchange source designation section for specifying a source disk storage space for exchanging a disk in a cartridge; an exchange destination specification section for specifying a destination disk storage space for exchanging a disk in a disk cartridge; and a disk changer body. a temporary storage space for at least one disc set in the disc changer body; a disc storage space for a disc cartridge installed in the cartridge mounting section; and an empty state determination unit that determines the empty state of the temporary storage space in the disc changer body. , a transfer order setting unit that sets a transfer order for disk replacement based on specification data by the replacement source designation unit and replacement destination designation unit, and determination data by the free status determination unit; and this transfer order setting unit. A controller for controlling the transfer mechanism according to a transfer order set by the disc changer.