JP2795188B2 - Disc playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a changer type disk reproducing apparatus for storing and reproducing a plurality of disks, and which can detect the presence or absence of a disk in each disk storage space with a simple detection structure. is there.

[0002]

2. Description of the Related Art Various types of changer-type disc reproducing apparatuses have been marketed, for example, as CD changers. 2. Description of the Related Art In a changer-type disc reproducing apparatus, a disc storage space for storing a plurality of discs one by one in an orderly manner is provided. Then, the presence or absence of a disk in each disk storage space is detected, and the display of the presence or absence of a disk in each disk storage space and other necessary controls are executed.

FIG. 2 shows a so-called carousel type as a conventional changer type disk reproducing apparatus. This is achieved by arranging the tray 12 with respect to the playback apparatus main body 10 such that the tray 12 can be stored and ejected, and the rotary table 14 is rotatably arranged on the tray 12.
4 to form a plurality of disk storage spaces 16 (grooves)
The disks 18 are individually stored.
When the tray 12 is stored in the main body 10 of the reproducing apparatus, the disc number to be reproduced is inputted by a key, and the play key is turned on, the rotary table 14 is rotated, and the corresponding disc storage space 16 is moved to the position of the drive unit 20. Once positioned, the disk 18 at that position can be played. When the tray 12 is discharged from the playback apparatus main body 10, a plurality of disc storage spaces 1
6 can be replaced.

As another conventional changer type disk reproducing apparatus, a so-called stack type magazine reproducing apparatus is shown in FIG.
Shown in This means that the discs 18 are respectively housed in a plurality of disc storage spaces 28 in the magazine 22, which are mounted in the main body 24 of the reproducing apparatus, and the discs 18 specified by key input or the like are pulled out of the magazine 22 and are transferred to the drive unit 26. It is set and played. By pulling out the disk magazine 22 from the playback device main body 24, it is possible to exchange disks in an arbitrary disk storage space.

FIG. 4 shows another conventional changer type disk reproducing apparatus. This is because the magazine 34 is rotatably accommodated in the playback apparatus main body 30 and the magazine 34 is
A plurality of disks 18 are stored in a ring shape in the radially partitioned disk storage space 32, and the disk storage space 32 designated by key input or the like is positioned at the position of the drive unit 36, and the disk 18 at that position is positioned. It is intended to be played. When exchanging a disc, the cover 18 of the reproducing apparatus main body 30 is opened, so that the disc 18 can be exchanged in a plurality of disc storage spaces 32 exposed to the outside.

[0006]

In the disk reproducing apparatus shown in FIG. 2, in order to detect the presence or absence of the disk 18 in each disk storage space 16, a plurality of disk storage spaces 1 are required.
In the case where the detectors are arranged in all of 6 or the detectors are arranged at one place on the tray 12, the rotary table 14 has to be rotated once to detect. For this reason, in the former case, a large number of detectors are required, and in the latter case, the entire disk storage space 3 must be turned unless the rotary table 14 is rotated once each time the disk is replaced.
It was not possible to detect the presence / absence of a disk in No. 2 and it was not possible to know at all whether the disk was replaced (that is, whether a disk was inserted or removed from the same disk storage space).

In the disk reproducing apparatus shown in FIG. 3, in order to detect the presence or absence of the disk 18 in each disk storage space 28, detectors must be arranged in all of the plurality of disk storage spaces 28, Many were needed.

In the disk reproducing apparatus shown in FIG. 4, in order to detect the presence or absence of the disk 18 in each of the disk storage spaces 32, a detector is disposed in all of the plurality of disk storage spaces 32 or one detector is provided. Fixedly arranged,
The magazine 34 had to rotate once to detect. For this reason, in the former case, a large number of detectors are needed, and in the latter case, the magazine 3
If the disk 4 was not rotated once, the presence or absence of the disk could not be detected, and it could not be known at all whether or not the disk was replaced.

In any of the cases shown in FIGS. 2 to 4, even when a new disc is stored in an empty disc storage space and immediately reproduced, the disc number to be reproduced by the user each time. (Address of disk storage space)
Must be entered, and the convenience of a normal single player cannot be obtained.

The present invention solves the above-mentioned problems in the prior art and eliminates the need to provide a detector in each disk storage space and to detect the presence or absence of a disk in all disk storage spaces when a disk is replaced. It is an object of the present invention to provide a changer-type disk reproducing apparatus which can determine whether or not a disk is present in a disk storage space and can determine whether or not a disk has been replaced.

[0011]

According to the first aspect of the present invention,
An insertion slot formed at a predetermined position in the playback apparatus main body and allowing one disk to be inserted into and removed from the playback apparatus main body; and a plurality of compartments accommodated in the reproduction apparatus main body and accommodating one disk each. are disk storage space is formed, any one among the plurality of disc storage space
In the main body of the playback apparatus , behind the insertion slot,
The disc inserted from the mouth enters with the insertion operation
The playback device main body, through the insertion slot from outside the playback device main body, and the positioning within the playback device main body.
And a magazine movably disposed in the main body of the reproducing apparatus so that one disk can be inserted into and taken out of the disc storage space, and separated from the magazine in the main body of the reproducing apparatus.
Is arranged, a disk presence detecting means for detecting the presence or absence of a disk in di <br/> disk storage space which is positioned behind the position of the insertion opening, the magazine in the reproduction apparatus main body
And separated are arranged, receive any disk stored in the disk storage space from the disc accommodating space
And a drive unit that reproduces the data.

According to a second aspect of the present invention, the magazine comprises:
A plurality of partitions for partitioning the plurality of disk storage spaces, wherein the plurality of disks are arranged so as to be sequentially arranged with their surfaces facing each other at a predetermined pitch, and the disk presence / absence detecting means is configured to perform the reproduction; A light-emitting unit and a light-receiving unit fixedly arranged in the apparatus main body; a reflection unit for reflecting light emitted from the light-emitting unit is formed in the partition; The light emitted from the means is reflected by the reflecting means of one of the partitions forming the disk storage space at the position behind the insertion slot, traverses the disk storage space, and is reflected by the reflection means of the other partition. Thus, a detection optical path for receiving light by the light receiving means is configured.

According to a third aspect of the present invention, there is provided a disk storage address detecting means for detecting an address of the disk storage space behind the insertion slot on the magazine, and an address detected by the disk storage address detecting means. The disc storage address disc presence / absence discrimination means for discriminating the presence / absence of a disc at the address from the presence / absence of the disc detected by the disc presence / absence detection means at that time, and the disc storage address disc presence / absence discrimination means, A disk storage address disk presence / absence storage means for storing the presence / absence of a disk at each disk storage space address of the magazine is further provided.

According to a fourth aspect of the present invention, the drive unit is disposed in the reproduction apparatus main body on an extension of a path leading from the insertion opening to a disk storage space located behind the insertion opening. In which the disc stored in the disc storage space can be exchanged, and the disc received from the disc storage space is reproduced.

[0015]

According to the first aspect of the present invention, by moving the magazine to position an arbitrary disk storage space behind the insertion slot, a disk can be stored and ejected in the disk storage space. In this case, the insertion slot is 1
Since only one disk can be stored and ejected, it is possible to detect the presence or absence of a disk in the corresponding disk storage space by detecting the presence or absence of a disk in the disk storage space at the insertion slot position. it can. Therefore, it is not necessary to provide a detector for each disk storage space, and since the disk storage space in which the disk has been replaced is known, there is no need to detect the presence or absence of a disk in all disk storage spaces after the disk replacement. Further, since the presence or absence of a disk is detected in the disk storage space located behind the insertion slot, it is possible to detect the insertion and removal of the disk without a time difference.

Also, if a command for reproducing the disc in the disc storage space where the disc has been replaced can be given by a key operation or the like (for example, when the play key is pressed immediately after the disc is replaced, the disc replaced by the disc is replaced). For example, a reproduction command for the storage space is output), and a disk newly stored in the disk exchange can be reproduced without inputting a disk number by a separate key, and usability like a single player can be obtained.

According to the second aspect of the present invention, since the disk presence / absence detecting means constitutes a detection optical path that traverses the disk storage space, if the disk is stored in the corresponding disk storage space, the optical path is blocked. If not, the optical path is connected, and the presence or absence of the disk in the disk storage space can be detected by the light receiving output of the light receiving means.

According to the third aspect of the present invention, the address corresponding to the disk storage address disk presence / absence determination means is determined based on the address detected by the disk storage address detection means and the presence / absence of a disk detected by the disk presence / absence detection means. By discriminating the presence / absence of a disk and storing it in the disk storage address storage means, the presence / absence of a disk at each address can be always known.

According to the fourth aspect of the present invention, since the drive unit is disposed on the same plane as the path leading from the insertion slot to the disk storage space at a position behind it, the disk newly stored by disk replacement can be used. In the case of reproduction, reproduction can be immediately performed by the drive unit without moving the magazine, and the time required to start reproduction can be shortened.

[0020]

An embodiment of the present invention will be described below. Here, an embodiment in which the present invention is applied to an MD (mini-disc) changer will be described. FIG. 5 shows the appearance of an MD changer 40 to which the present invention is applied. In the MD changer 40, a ring-shaped (donut-shaped) magazine 44 is rotatably accommodated in a playback device main body 42 in both left and right directions around the center of the ring as a rotation shaft 46. The magazine 44 is driven to rotate in both left and right directions by a magazine driver 48. In the magazine 44, a plurality of (for example, 100) disk storage spaces 50 are radially formed at a predetermined pitch, and in each disk storage space 50, one MD 52 containing a magneto-optical disk in a cartridge can be taken in and out one by one. Are stored side by side in a vertical position.

In the center of the front panel 54 of the reproducing apparatus main body 42, one vertical slot 56 (insertion port) is formed. The slot 56 is formed in such a size that one MD 52 can be inserted and removed, and one MD 52 can be inserted into and removed from one disk storage space 50a located behind the MD 56.

In the reproducing apparatus main body 42, a drive unit 60 is fixedly disposed in a central space 58 of the ring-shaped magazine 44. Since the central space 58 is effectively used, space efficiency is high. The drive unit 60 is for reproducing an arbitrary MD 52 stored in the magazine 44, and includes a spindle motor and an optical pickup. In the case where it has a recording function, it further comprises a recording magnetic head. In this case, the drive unit 60 is connected to the magazine 44 with an MD5.
2 and a mechanism for ejecting the MD 52 from the slot 56. These mechanisms are driven by motor power based on a user's key operation or the like.

In this case, the drive unit 60 is moved from the slot 56 to the disk storage space 50a located behind the slot 56.
Are arranged on the same plane as the path leading to the space (particularly on the extension L of the same path in this case), and the MD 52 is exchanged with the storage space 50a. Therefore, slot 56
When reproducing the newly inserted MD 52a from the
Since the magazine 2a may be sent to the drive unit 60 as it is through the disk storage space 50a located behind the slot, the magazine 44 does not need to be rotated, and the time until the start of reproduction can be shortened.

In the reproducing apparatus main body 42, in addition to the above, the MD in the disk storage space 50a located behind the slot is provided.
A disk presence / absence detector 62 for detecting the presence / absence of the disk 52 and a disk storage address detector 64 for detecting the address of the disk storage space 50a located behind the slot are fixedly provided. The disk storage space address detector 64 detects, for example, the amount of disk storage space to be fed from the reference disk storage space (first address) at the position behind the slot, mechanically, optically, or magnetically. Detected by a dynamic method, etc.
By counting up / down according to the rotation direction, the address of the disk storage space 50a behind the slot is detected.

On the front panel 54 of the playback apparatus main body 42,
An operation unit 66 including a numeric keypad for inputting a disk number (address of a disk storage space) and a track number to be reproduced by a user and various operation keys for instructing reproduction, stop, pause, and the like; Further, a display section 68 for displaying the number of the disk being played back, the number of the music, and the presence / absence of the disk at each address is provided.

FIG. 1 is a plan view and a control block diagram of a main part of the MD changer 40 shown in FIG. Magazine 44
, For example, 100 partition plates 70 are attached radially around the rotation shaft 46 at a predetermined pitch in the entire circumference. Disk storage space 50 formed between partition plates 70
, The MDs 52 are stored one by one. MD5 stored in the disk storage space 50a behind the slot 56
2 is the direction of the drive unit 60 and the slot 56
In both directions.

The drive unit 60 is fixedly disposed on an extension L of a straight path extending from the slot 56 to the disk storage space 50a located behind the drive unit 60. The drive unit 60 has a mechanism for exchanging the MD 52 with the spindle motor 72, the optical pickup 74, and the disk storage space 50a behind the slot, and pushes out the MD 52 in the disk storage space 50a behind the slot through the slot 56. (Both not shown) are provided. Drive unit 60
According to the reproduction command from the user, the MD 52 is pulled out from the disk storage space 50a located behind the slot, set on the spindle motor 72, driven to rotate, and reproduced by the optical pickup 74.

Another MD5 stored in the magazine 44
When a command to reproduce the disk No. 2 is given, the MD 52 set in the drive unit 60 is returned to the original disk storage space 50, and the magazine 44 is rotated so that the disk storage space 50 of the designated address is The drive unit 60 is positioned at the back position, and the drive unit 60 pulls out the MD 52 from the disk storage space 50 and reproduces it.

When reproducing the MD 52 not stored in the magazine 44, the MD 52 is inserted into the slot 56 (when the MD 52 is pushed halfway by hand, the MD 52 is pulled in by a spring or the like. The MD 52 is separately stored in the disk storage space 50a located behind the slot. When the MD 52 is stored, the MD 52 is ejected or the magazine 44 is rotated to position the empty disk storage space 50 behind the slot, and then a new MD 52 is inserted.) It is set in the drive unit 60 after passing through the disk storage space 50 at the back position and reproduced. In addition, exchange of MD52,
When recording or playback is not being performed,
By rotating the magazine 44 during recording or reproduction of an arbitrary MD 52, the empty disc storage space 50 (the MD being reproduced) is rotated.
Except where 52 was stored. ) Can be positioned behind the slot 56.

Disk storage space 50 located behind slot
A light projecting means 76 and a light receiving means 78 are fixedly disposed below the position a.
2 detects the presence or absence of the MD 52 at the disk storage position 50a based on whether or not the optical path 79 is blocked.

The CPU 80 serves as disk storage address disk presence / absence discrimination means, which is information on the address of the disk storage space 50a at the position behind the slot detected by the disk storage address detection means 64 and the same disk detected by the disk presence / absence detector 62. The presence or absence of the MD 52 at the corresponding address is determined from the information on the presence or absence of the MD 52a in the storage space 50a, and the determination information is stored in the memory 82 for each address. In addition, the detection output of the disk presence / absence detector 62 is “present” → “absent”, “absent” → “present”, “present” → “absent” →
"Yes" is detected, and the corresponding address is
It is detected that D52 has been pulled out, inserted, or replaced. In this way, the presence / absence of the MD 52 and the insertion / removal of the MD 52 can be managed for the entire disk storage space 50 only by using one set of the disk presence / absence detectors 62. Further, even when the disk is exchanged, it is not necessary to make a round of the magazine 44 to detect the presence or absence of the MD 12 in the entire disk storage space 50 again.

The CPU 80 displays the presence or absence of the MD 12 for each disk storage space 50 and executes other necessary control based on the information stored in the memory 82. The control based on the disc presence / absence discrimination information for each address stored in the memory 82 can be used for, for example, control for inhibiting insertion of another MD 52 into the disc storage space 50 in which the MD 52 is already stored. That is, in the MD changer 40, as described above, when one MD 52 in the magazine 44 is pulled out to the drive unit 60 and recorded or reproduced, the magazine 44 is arbitrarily rotated, and the MD 52 in the magazine 44 is rotated. Since the loading and unloading can be performed without interrupting the recording or reproduction, another MD 52 is provided at the return destination of the MD 52 performing recording or reproduction (the disk storage space in which the MD 52 being recorded or reproduced is stored). Must be stored. Therefore, based on the disk presence / absence discrimination information for each address stored in the memory 82, when the disk storage space 50 in which the MD 52 has been stored is positioned behind the slot 56, a warning display is displayed or the slot 56 is displayed.
Mechanically shut out.

The information on the presence / absence of disk exchange can be used, for example, for managing UTOC information for each MD 52 stored. That is, in each MD 52, a disc title, a song title, and the like can be recorded as disc information in a UTOC area. The UTOC is read from all MDs 52 currently stored in the magazine 44 and the memory 8 is read.
2 can be used for search and the like by storing it as a database. Therefore, the disk storage space 50 in which the detection output of the disk presence / absence detector 62 is changed from “no” to “present”
Is stored in the memory 82 or the like, and stored at an appropriate time (for example, an idle time of reproduction or a newly stored MD 52).
UTOC is read during the first playback of the
Is stored in the corresponding address. Further, the UTOC at the corresponding address in the memory 82 is deleted from the disk storage space where the detection output of the disk presence / absence detector 62 changes from presence to absence. Thus, the UTOC information for each disk storage space 50 stored in the memory 82 always matches the actual storage content.

The CPU 80 also detects a new insertion of the MD 12 or replaces the disc, and presses the play key as it is (or presses the independently provided "single play key") to give a playback command. When the disk 52 is inserted, the MD 52 stored in the disk storage space 50a behind the slot (that is, newly inserted or replaced) can be input without inputting the disk number to be reproduced (that is, without performing any search). The reproduced MD is transferred to the drive unit 60 for reproduction. As a result, operability like a normal single player is obtained.

The memory 82 is backed up by a battery, and the memory is retained even when the main power of the MD changer 40 is turned off. Also, in case that the difference between the storage contents of the memory 82 and the actual storage state is difficult, the magazine 44 is automatically rotated once by inputting an "auto memory key" or the like, so that the entire disk storage space 50 May be provided with a function of sequentially detecting the presence or absence of the MD 52 and updating the entire storage content of the memory 82.

Here, a configuration example of the disk presence / absence detector 62 will be described with reference to FIG. In the bottom plate 44a of the magazine 44, a transparent component 84 shown in FIG. The transparent component 84 is made of a transparent plastic or the like. The transparent component 84 has a projection 8 that fits into a notch 86 formed in the partition plate 70.
8 are formed. The top of the projection 88 is formed on a V-shaped total reflection surface 89, whereby the reflection means 89 is incorporated in the partition plate 70.

As shown in FIG. 6B, a light projecting means 76 (for example, a light emitting diode) and a light receiving means 78 (for example, a phototransistor) constituting the disk presence / absence detector 62 are provided.
Is fixedly arranged on the chassis 90 below the magazine 44 with the light projecting surface and the light receiving surface facing upward with the disk storage space 50a located behind the slot. Then, the light emitted from the light projecting means 76 is transmitted to one of the partition plates 70 constituting the disk storage space 50a located behind the slot.
a into the projection 88 of the transparent component 84, reflected by the total reflection surface 89 at the top thereof, traverses the disk storage space 50a, and projects the projection 88 of the transparent component 84 of the other partition plate 70b.
A light path 79 for detection which is reflected by the total reflection surface 89 at the top of the light receiving means and enters the light receiving means 78 is constituted. If the MD 52 is stored in the disk storage space 50a, the optical path 79 is shut off. If the MD 52 is not stored, the optical path 79 passes. Therefore, the presence or absence of the MD 52 in the disk storage space 50a can be detected by the light receiving output of the light receiving means 78. .

[0038]

[Other Embodiments] In the above-described embodiment, the magazine 44 is formed into a ring shape (doughnut type) to be rotated and moved. However, as shown in FIG. 7, a linear magazine 90 is constructed so as to be linearly reciprocated. You can also. Again,
From the slot 56 to the disk storage space 50 behind the slot
The same plane as the path passing through a (particularly on the extension line L here)
It is convenient to dispose the drive unit 60 in the first place.

Although the slot 56 is left open in the above embodiment, a lid (lid) that can be opened and closed can be provided to prevent intrusion of dust and the like. Although only one slot is provided in the above embodiment, a plurality of slots may be provided in some cases (they may be connected to each other as long as they are partitioned). In this case, a disk presence / absence detector may be provided individually so that it is possible to identify in which slot a disk has been taken in and out.

In the above embodiment, the case where the present invention is applied to an MD changer has been described.
The present invention can also be applied to a CD changer in which a (compact disc) is housed in a magazine while being housed naked or in a cartridge. FIG. 8 shows an embodiment applied to a CD changer. This CD changer 91
A rotating table-shaped magazine 94 is provided in the playback device main body 92.
Are rotatably accommodated in both left and right directions around the center of the table as a rotation shaft 96. The magazine 94 is driven to rotate in both left and right directions by a magazine driver 98. A plurality of (four here) disk storage spaces 100 are formed at equal intervals around the rotation shaft 96 in the magazine 94, and each of the disk storage spaces 100 stores one CD 102 in a removable manner. .

One horizontal slot 106 (insertion opening) is formed in the center of the front panel 104 of the reproducing apparatus main body 92. This slot 106 is for one CD10
2 can be inserted and removed, and one disk storage space 100a located behind the
D102 can be taken in and out. Slot 106
The CD 102 is inserted into the disc storage space 100
A drive mechanism (not shown) for taking in and out of a is provided.

A drive unit 110 is fixedly provided at the back of the main body 92 of the reproducing apparatus. The drive unit 110 is provided in the disk storage space 1 at the innermost part of the magazine 94.
00 to play the CD 102 stored in
It has a spindle motor and an optical pickup.

In the reproducing apparatus main body 92, in addition to the above, the C in the disk storage space 100a located behind the slot is also provided.
Disk presence / absence detector 1 for detecting the presence / absence of D102
A disk storage address detector 114 for detecting the address of the disk storage space 100a at the position 12 or behind the slot is fixedly provided. The disk presence / absence detector 112 is constructed, for example, by arranging a light projecting unit and a light receiving unit fixedly above and below the disk storage space 100a at the position behind the slot (the disk storage space 1 at the position behind the slot).
If the CD 102 is stored in 00a, the light is shielded, and if it is not stored, the light is transmitted. ). For example, the disk storage space address detector 114 determines the amount of the disk storage space to be fed from the reference disk storage space (first address) when the reference disk storage space (the first address) is at the position behind the slot.
The address is detected by an optical or magnetic method or the like, and the address of the disk storage space 100a behind the slot is detected by counting up / down according to the rotation direction.

On the front panel 104 of the reproducing apparatus main body 92, a numeric key for inputting a disk number (address of the disk storage space) and a music number to be reproduced by the user, and commands for reproduction, stop, pause, etc. are issued. An operation unit 116 on which various operation keys and the like are arranged, a display unit 118 for displaying the number of the disk being played back, the number of the music, and the presence / absence of the disk at each address, and the like are provided.

With the above configuration, the disk presence detector 1
By detecting the presence / absence of the CD 102 in the disk storage space 100a located behind the slot at 12, it is possible to manage the presence / absence of the CD 102 in all the disk storage spaces 100a and the insertion / removal of the CD 102.

The present invention can also be applied to a disc reproducing apparatus of a changer type in which optical disks other than MDs and CDs, magneto-optical disks, magnetic disks, and the like are naked or stored in a cartridge and stored in a magazine. .

[0047]

As described above, according to the first aspect of the present invention, by moving the magazine to position an arbitrary disk storage space behind the insertion slot, the disk is inserted into the disk storage space. It can be stored and discharged. In this case, the insertion slot holds only one disc,
Since the disc can be ejected, by detecting the presence or absence of a disk in the disk storage space at the insertion slot position, it is possible to detect the presence or absence of a disk in the corresponding disk storage space and whether or not the disk has been replaced. Therefore, there is no need to provide a detector for each disk storage space, and since the disk storage space in which the disk has been replaced can be known, there is no need to detect the presence or absence of a disk in all disk storage spaces after the disk replacement. Also,
Since the presence or absence of a disk is detected in the disk storage space at the position behind the insertion slot, the insertion and removal of the disk can be detected without a time difference.

Further, if a command for reproducing the disc in the disc storage space in which the disc has been replaced can be given by a key operation or the like (for example, if the play key is pressed immediately after the disc is replaced, the disc replaced by the disc is replaced). For example, a reproduction command for the storage space is output), and a disk newly stored in the disk exchange can be reproduced without inputting a disk number by a separate key, and usability like a single player can be obtained.

According to the second aspect of the present invention, since the disk presence / absence detecting means constitutes a detection optical path crossing the disk storage space, if the disk is stored in the corresponding disk storage space, the optical path is interrupted. If not, the optical path is connected, and the presence or absence of the disk in the disk storage space can be detected by the light receiving output of the light receiving means.

According to the third aspect of the present invention, the address detected by the disk storage address detection means and the presence / absence of the disk detected by the disk presence / absence detection means determine the address corresponding to the disk storage address disk presence / absence determination means. By discriminating the presence / absence of a disk and storing it in the disk storage address storage means, the presence / absence of a disk at each address can be always known.

According to the fourth aspect of the present invention, the drive unit is disposed on the same plane as the path leading from the insertion slot to the disk storage space at a position behind the drive unit. In the case of reproduction, reproduction can be immediately performed by the drive unit without moving the magazine, and the time required to start reproduction can be shortened.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention;
It is the top view and control block diagram which show the constitution of the principal section of the changer.

FIG. 2 is a plan view showing a conventional carousel type changer type disc reproducing apparatus.

FIG. 3 is a perspective view showing a conventional stacked magazine type changer type disc reproducing apparatus.

FIG. 4 is a perspective view showing another conventional changer-type disc reproducing apparatus.

FIG. 5 is a perspective view showing an appearance of an MD changer showing one embodiment of the present invention.

FIG. 6 is a perspective view and an AA arrow view showing details of a disk presence / absence detector 62 of FIG. 1;

FIG. 7 is a plan view showing another embodiment of the present invention in which a magazine structure is changed.

FIG. 8 is a perspective view showing an embodiment in which the present invention is applied to a CD changer.

[Explanation of symbols]

Reference Signs List 40 MD changer (disc reproducing device) 42 Main unit of reproducing device 44 Magazine 50 Disk storage space 50a Disk storage space behind slot (insertion opening) 52 MD (disk) 56 Slot (insertion opening) 60 Drive unit 62 Disk presence detecting means 64 Disk Storage address detection means 70 Partition plate (partition) 76 Light projection means 78 Light reception means 79 Optical path for detection 80 CPU (Disk storage address disk presence / absence determination means) 82 Memory (Disk storage address disk presence / absence storage means) 89 V-shaped total reflection Surface (reflecting means) 91 CD changer (disc reproducing device) 92 Reproducing device main body 94 Magazine 100 Disk storing space 100a Disk storing space behind slot (insertion opening) 102 CD (disk) 106 Slot (insertion opening) 1 0 an extension on the drive unit L same plane

Claims (4)

(57) [Claims] 1. An insertion hole formed at a predetermined position in a main body of a reproducing apparatus for allowing one disk to be inserted into and removed from the main body of the reproducing apparatus; a plurality of compartments disk housing space is formed for accommodating, any one of a corresponding plurality of disc storage space regeneration apparatus main body, behind the insertion opening, the insertion
The disc inserted from the entrance enters with the insertion operation
Is positioned in a position, through those <br/> insertion inlet from outside the regeneration apparatus main body, the positioning of the reproduction apparatus main body
A magazine movably arranged in the main body of the reproducing apparatus so that one disk can be inserted into and taken out of the disc storage space, and a magazine arranged separately from the magazine in the main body of the pre-era reproducing apparatus.
Is a disk presence detecting means for detecting the presence or absence of a disk in the disk storage space which is positioned behind the position of the insertion opening, is disposed away from said magazine by said reproducing apparatus body
And a drive unit for receiving an arbitrary disc stored in the disc storage space from the disc storage space and reproducing the disc. 2. The magazine is provided with a plurality of partitions for partitioning the plurality of disk storage spaces, and the partitions are configured to store a plurality of disks side by side at predetermined pitches with their surfaces sequentially facing each other. The disc presence / absence detecting means includes a light projecting means and a light receiving means fixedly arranged in the reproducing apparatus main body, and a reflection means for reflecting light projected from the light projecting means is formed in the partition, The disk presence / absence detecting means reflects the light emitted from the light emitting means by the reflecting means of one of the partitions forming a disk housing space at a position behind the insertion opening, and traverses the disk housing space. 2. The disk reproducing apparatus according to claim 1, wherein a light path for detection is configured to be reflected by the reflection means of the other partition and received by the light receiving means. 3. A disk storage address detecting means for detecting an address on the magazine of a disk storage space located behind the insertion slot, an address detected by the disk storage address detecting means, and a disk presence / absence detection at that time. A disk storage address disk presence / absence determination means for determining the presence / absence of a disk at the address from the presence / absence of the disk detected by the means; and a disk storage space of each of the magazines based on the determination result of the disk storage address disk presence / absence determination means. 3. The disk reproducing apparatus according to claim 1, further comprising a disk storage address disk presence / absence storage means for storing presence / absence of a disk at an address. 4. The disk drive according to claim 1, wherein the drive unit is disposed on the same plane as a path leading from the insertion slot to a disk storage space located behind the insertion slot in the playback apparatus main body. 2. The disk storage device according to claim 1, wherein said disk storage space is configured to be able to exchange a stored disk and reproduce the disk received from said disk storage space.
4. The disc reproducing device according to any one of claims 1 to 3.