JPH0670866B2 - Disc playing 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 disc playing device, and more particularly to a disc playing device capable of accommodating a plurality of discs and sequentially selecting any of the accommodated discs for continuous performance.

[0002]

2. Description of the Related Art A jukebox is generally known as such a disk playing device. However, the conventional jukebox itself is very large, and it is very troublesome to put in and take out (put in and take out) the disc to and from the disc storage part, so that it is not suitable as a home jukebox and is used for commercial use. Most of them were there. In addition, it is very disadvantageous in terms of usability because a dedicated key must be used to open and close the door when the disc is replaced, etc. Was not preferable because it could be opened.

Recently, several types of means have been proposed for digitally inputting a signal to a disc to greatly increase the amount of information to be stored as compared with a conventional audio disc in which a signal is input in an analog manner. In particular, the method of using a disc, which is generally called a compact disc for picking up a signal by using a laser beam, is easy to handle because the disc diameter is as small as 12 cm, and the playing device can be downsized. The performance time of one side is 1 hour, and it can store about 1.5 times the amount of information as the double side performance time of the conventional audio disc. Therefore, for example, 50 discs can hold 1000 songs of 3 minutes playing time, and a compact disc has a thickness of about 1.2 mm, so 50 discs are 6 cm thick. It can store up to 1000 songs. By using the compact disc in this way, it is possible to provide an extremely small jukebox that can be used in general households.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a disc playing device which is very small in size, can be easily attached and detached, and can play the disc smoothly.

[0005]

DISCLOSURE OF THE INVENTION A disk playing device according to the present invention includes a disk housing portion in which a plurality of disks are arrayed and housed, and the disk housing portion is relatively movable in the disk array direction with respect to the disk housing portion. And a control means for positioning the disc storage portion and the disc selection means with respect to each other so as to bring the disc selection means to a storage position corresponding to a designated disc among the plurality of discs. A disc playing device including: a detecting unit for detecting the designated disc in a non-reproducible state; and a storage position corresponding to the designated disc in response to an output of the detecting unit. Storage means for storing information, and the detection means is provided in the disk selection means.

[0006]

As soon as the disc selecting means reaches the position where the designated disc is stored, the detecting means provided in the disc selecting means detects whether or not the disc is in a non-reproducible state. Therefore, a quick detection operation is performed every time the disc selecting means moves.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the overall configuration of a disc playing device according to the present invention. In the figure, reference numeral 4 is a main body of an apparatus which accommodates a plurality of discs 2 and can automatically play the discs, and has a casing structure capable of stacking other devices having substantially the same size, for example, an amplifier and a tuner. There is. For example, in front of the device body 4, there is a disc insertion opening 3
Is formed, and a disc storage portion (described later) is provided in the vicinity of the insertion slot 3 so that the disc can be easily attached and detached. A door 5 for closing the insertion port 3 is attached to the apparatus main body 4 so as to be openable and closable, and the door 5 is opened and closed by a door switch 1 provided on the front surface of the main body. An operation unit 6 sends various commands to the apparatus body 4, and is separated from the apparatus body 4, for example, and is connected by means such as wired or wireless.

FIG. 2 shows the construction of the operating portion 6,
(A) is a plan view, (b) is a front view including a partial cross section,
(C) is a side sectional view. On the operation unit 6, 0 to 9 for specifying the disc number and the song number to be selected
Number key 7 up to, ENT key 8 to register the specified number in memory, AL to play from the first disc or to play all songs on the disc
L key 9, ST to start playing after memory registration
An ART key 10, a NEXT key 11 for moving to a disc or song registered next in the middle of playing a disc or song registered in the memory, and an AGAIN key 12 for playing again according to the contents registered in the memory are provided. There is. Further, a plurality of index plates 13 serving as storage means capable of recording the titles, tunes, etc. of the stored discs and changing the contents thereof in association with the exchange of the discs and easily searching the plates 13, A plurality of index switches 14 are provided corresponding to the number of index plates 13 in order to detect the index plate being searched in conjunction with, and the number keys 7 are used to specify the disk number separately from 1 to 5. Index keys 15 are attached respectively. The index plate 13 can easily change the title of the disc, the tune, etc. in association with the exchange of the disc.

Further, on both the apparatus main body 4 and the operating section 6, there are discs IND16 and PR for displaying the disc number and the tune number which are designated or playing, respectively.
OGRAM IND17, PL indicating that it is playing
AY IND18, a STA that lights up until a playable state after the carrier assembly described later stops at a predetermined position
ND BY IND19, ACCESS IND20 which lights up while the above-mentioned carrier assembly and the pickup which will be described later are moving to predetermined positions, and when there is no disc at the designated disc number position or when the front and back are erroneously accommodated Is provided when an ERROR IND21 is detected.

In the above-mentioned structure, the operation unit 6 integrally formed with the storage means and various operation keys is provided separately from the apparatus body 4, but both the apparatus body 4 and the apparatus body 4 are provided. The configuration may be provided only on (for example, the front surface). 3 to 5 show the internal structure of the disc playing device according to the present invention. FIG. 3 is a plan view, FIG. 4 is a front view, and FIG. 5 is a side view. In the figure,
The door 5 described above has its outer peripheral portion blindfolded by means such as painting, and bearings 24 fitted to the support pins 23a and 23b fixed to the underbase 22 are provided on the left and right sides thereof.
a and 24b. A fan gear 25 is attached to, for example, one side 24a of the bearings 24a and 24b. The motor 26 as a drive source for opening and closing the door 5 and the reduction mechanism 2
7 is fixed to the under base 22, and the gear 28 at the final stage of the speed reduction mechanism 27 meshes with the fan-shaped gear 25. The shaft 29 of the gear 28 at the final stage has a recess 30 on the peripheral wall.
a cam 30 having a is fixed,
Limiter switches 31a, 31b for detecting the open limit and the closed limit of the door 5 by fitting the switch 0a.
Is in contact with the peripheral wall of the cam 30.

A disk housing portion 32 for housing a plurality of disks 2 has a plurality of groove portions 33 formed at a constant pitch and is fixed to the under base 22, as shown in a schematic perspective view in FIG. Support base 34, and a plurality of partition plates 3 inserted and installed in the groove 33 of the support base 34.
5 and a plurality of disks are vertically arranged side by side in a slot formed between the partition plates 35. The support base 34 is formed of a continuous and integral member, and supports the lower end of the inserted disc 2 at, for example, two points and prevents the disc from moving in the front-rear direction, in addition to the groove 33 described above. For example, a pair of support members 36 and 37 are integrally provided at the front and rear. A pair of support members 36,
Reference numeral 37 is configured so that the front (disk insertion) side member 36 is higher than the rear side member 37 in order to restrict the free movement of the mounted disc and prevent the disc from falling forward due to disturbance or the like. Alternatively, it may be formed separately from the support base 34.

In the disc storage portion 32, the disc is accommodated in such a manner that it is sandwiched between the two partition plates 35, and the friction due to the twist between the disc and the partition plate when the disc is moved is reduced and the disc is stored. In order to prevent damage, the partition plate 35 has a guide wall 38 as shown in FIG.
And has a substantially I shape, and at least the surface of the contact portion with the disk is subjected to surface treatment by Teflon coating or the like. Further, the partition plate 35 facilitates mounting of the disc, and serves as a guide for returning the disc from the playing position to the storing position, and the front and rear of the guide wall 38 are tapered or curved. Particularly, by forming the parallel portion 39 at the tip of the taper portion 38a on the playing position side, it is possible to perform the performance with the disc 2 positioned between the parallel portions 39 as shown in FIG. Can be securely stored in the 2 storage position.

In FIGS. 3 to 5, the carrier 40 is movably supported by being fitted into the guide pars 42a and 42b through a round hole 41a and an elliptical hole 41b penetrating the side surface. The carrier 40 is provided with a support guide 43 having a concave portion on the upper surface thereof, which has a concave portion adapted to position a disc pulled out from the disc accommodating portion 32 by a slider 58 which will be described later at the time of playing. The support guide 43 supports the lower end of the disc at, for example, two points so that the center position of the disc is slightly lower than the center position of a clamper described later. The support guide 43 is formed with a perspective surface 43a on the disk storage portion 32 side so that the disk can be moved smoothly. By making the opposite side a perspective surface, it is possible to surely return the disc to the normal playing position even when the disc is displaced rearward from the playing position when the disc moves.

The carrier 40 is driven by a carrier drive motor 44 through a speed reduction mechanism 45 by a wire 46 in the left-right direction in the drawing. The wire 46 is installed on a pulley 47 connected to the speed reduction mechanism 45 and four pulleys 48 a to 48 d attached to the underbase 22 and is fixed to the carrier 40. Carrier limiter switch 49 for detecting the left and right limit positions of the carrier 40.
a and 49b are provided. Here, when the retracted position of the carrier 40, that is, the home position is the right limit position in the figure, the switch 49a detects the home position of the carrier 40. Further, a carrier position detection sensor 50 that detects the moving position of the carrier 40 is provided.
The carrier position detection sensor 50 has a slit plate 51 fixed to the under base 22 having a slit formed along the moving direction of the carrier 40 corresponding to the disc storage position of the disc storage portion 32, and this slit plate 51. And a photocoupler 52 mounted on the carrier 40 so as to sandwich the slit portion thereof.

The mechanical base 53 attached to the carrier 40 has a disk drive motor 5 for rotating the disk.
4, a disc reading information pickup 55 movably supported on the mechanical base 53, and the pickup 5
A pickup drive motor 56 for driving the motor 5, a deceleration mechanism 57, a slider 58 for pulling out the disk housed in the disk housing 32, a guide base 59 for guiding and supporting the slider 58, and the like are mounted. Further, two guide plates 60 for guiding the disc taken out from the disc storage portion 32 to the playing position.
a, 60b, a disc presence / absence / front / back detection sensor 61 for discriminating the presence / absence of a disc attached to either one of these two guide plates and a front / back detection sensor 61, and a clamp arm attached with a clamper 62 for clamping the disc. 63, etc. are attached to form a carrier assembly 64, which is a disk playing means.

The carrier 40 and the slider 58 are also provided.
A mechanism for selecting a disc, that is, a disc selecting means is constituted by the guide pads 60a and 60b. The pickup 55 is supported by a pair of guide bars 65a and 65b attached to the mechanical base 53 so as to be movable in the radial direction of the disk.
7 is connected to a pulley 66 fixed to the mechanical base 53 and a wire 68 installed on a pulley 67 fixed to the mechanical base 53, and is driven by a pickup drive motor 56. Pickup limiter switch 6 for detecting the limit positions of the pickup 55 on the inner and outer circumferences of the disc, respectively.
9a and 69b are provided.

The two guide plates 60a and 60b are held at predetermined intervals by a stopper pin 70 (shown in FIG. 19) located at the rear end portion thereof to prevent the disc from escaping backward. , Disk storage 3
The end portions on the second side are bent outwards of each other. As a result, the disc misalignment between the disc storage portion 32 and the carrier assembly 64 can be absorbed to reliably guide the disc to the playing position and prevent the disc from tilting at the playing position. In the present embodiment, the guide plates 60a, 60
Although a member having a thin plate thickness is used as b and the other ends are bent outward from each other, a member having a thick plate member is configured to gradually widen as the distance between the ends approaches the tip. May be

In FIGS. 3 to 5, the disc stopper 7 for preventing the disc from moving out of the storage portion 32.
The reference numeral 1 is provided at the rear of the disc storage portion 32, and is supported by a stopper arm 72 pivotally supported on the under base 22 and its position is regulated. A cam pin 74 engageable with the cam 73 protruding from the carrier 40 is fixed to the stopper arm 72. When the carrier assembly 64 is in the rightward limit position or home position of FIG. 3, the cam pin 74 is shown in FIG.
As shown in the plan view of (a) and the side view of (b), the cam 73 of the carrier 40 is engaged to position the disk stopper 71 at the blocking position for blocking the movement of the disk. On the other hand, when the carrier assembly 64 is moved from the home position, the engagement with the cam 73 of the carrier 40 is released as shown in the plan view of FIG. 9A and the side view of FIG. 71 is rotated counterclockwise in the figure to retract from the blocking position so that the disc can be moved.

The disk stopper 71 takes the blocking position within the limit that the disk can return to the supporting members 36 and 37 of the housing 32 when the disk in the disk housing 32 is pushed backward. May be arranged in such a positional relationship as to come into contact with the disc when is on the support members 36 and 37. Also, the disk stopper 7
Reference numeral 1 prevents the deviation from the storage portion 32 by engaging the disk as a stopper member when the disk is mounted in the storage portion 32, and moves the disk from the storage portion 32 due to disturbance such as vibration when the device is not used. Acts as a restricting member for blocking. The regulating member may be provided separately from the disc stopper 71, and various configurations are conceivable as its configuration.

10 and 11 show the structure of the slider portion. FIG. 10 is a plan view and FIG. 11 is a front view. In the figure, on the upper surface of the guide base 59, for example, 3
Book guide grooves 75a to 75c are formed, and the slider 58 engages with the guide grooves 75a to 75c via the guide pins 76a to 76c to guide the guide base 5
It is slidable linearly with respect to 9. A drum-shaped pull-out roller 78 and a reset roller 79 are attached to the slider 58 via arms 77a and 77b, and these rollers are provided so as to hold the outer circumference of the disc, and the performance is reversed from the disc housing portion 32 to the playing position. It is a disc moving member that moves the disc from the position to the storage portion 32 while rolling it, and is provided at a predetermined distance in the sliding direction of the slider 58.

A drive motor 80 for driving the slider 58 and a belt 81 and a pulley 82 for the motor 80.
The worm gear 83 coupled via the is attached to the guide base 59 via the chassis 84. A drive pulley 86 is coaxially attached to a main gear 85 meshed with the worm gear 83, and a wire 87 wound around the pulley 86 is attached to a slider 58 via pulleys 88a and 88b provided at both ends of a guide base 59, respectively. It is fixed and the slider 58 is driven by the driving force of the motor 80. Slider limiter switches 89a and 89 for detecting the sliding limit of the slider 58 by engaging the cam portion 58a of the moving slider 58.
b, a disc discriminating position switch 8 for detecting the disc presence / absence and the position for discriminating between the front and the back when moving the disc
9c is provided.

12 and 13 show the structure of the clamper portion. FIG. 12 (a) is a plan view including a partial cross section, FIG. 12 (b) is a front view including a partial cross section, and FIG. Is a side view. In the figure, a clamp arm 63 is rotatably attached to a pedestal 90 provided on the carrier 40 (shown in FIGS. 3 to 5) with a shaft 91 as a support point, and a spring 92 moves the head clockwise or in the opening direction. Being energized. The amount of rotation of the clamp arm 63 is regulated by the pin 93 protruding from the pedestal 90. A guide portion 95 having a magnetic body 94 at its tip and a guide pin 96 for controlling the rotation of the clamp arm 63 in the counterclockwise direction, that is, the closing direction are attached to the clamp arm 63. Guide pin 96
Engages with the guide groove 97a of the engaging member 97 provided on the slider 58 (see FIGS. 10 and 11) and moves along the guide groove 97a when loaded at the disc playing position. As a result, the clamp arm 63 is rotated in the closing direction against the spring 92. The substantially frustoconical clamper 62 has a ring-shaped magnet 98 on the bottom and a magnetic body 99 on the head, and is loosely fitted to the clamp arm 63 by a guide 95. The clamper 62 and the clamp arm 63 are made of a non-magnetic material.

A drive motor 54 for driving the disk 2 is provided on the mechanical base 53 on the side facing the clamper 62.
Is attached, and a turntable 100 as a disk driving means is fixedly attached to its rotation shaft so as to be rotatable. The turntable 100 has a ring-shaped magnet 101 and a yoke 102 built therein.

In the clamper unit having such a structure, when the disc is loaded at the playing position, the slider 5
The clamp arm 63 is rotated in the closing direction by the engagement between the guide groove 97a of the engaging member 97 provided on the No. 8 and the guide pin 96 of the clamp arm 63. As the clamp arm 63 rotates, the head of the clamper 62 causes the disk 3 to move.
It is inserted into the turntable 100 through the center hole of the. At the time of insertion, the magnetic body 99 of the head of the clamper forms a magnetic circuit with the magnet 101 and the yoke 102 in the turntable 100 and is pulled by the yoke 102.
The taper portion of the clamper 62 lifts the disc 2 mounted on the support guide 43 (see FIG. 5) of the carrier 40, and presses and clamps the disc 2 on the mounting surface 100a of the turntable 100. Further, the clamp arm 63 rotates to separate the guide portion 95, which was engaged by the attraction force between the magnetic body 94 and the magnet 98, from the clamper 62. As a result, the clamping force is doubled by the force of the magnetic body 99 being pulled by the yoke 102 and the force of the magnet 98 at the bottom of the clamper being pulled by the magnetic body 94. In the above state, the clamper 62, the disc 2 and the turntable 1
00 has no contact with other members, so that the disk 2 can be stably rotated.

FIG. 14 is a block diagram of a control system of the disc playing apparatus according to the present invention. The operation section 6 has a music selection switch for designating a disc number to be selected and a music number as described with reference to FIG. A group 601 and a display unit 602 for displaying a disc number, a song number, or an operation mode of the machine are provided. A control unit including a CPU 603, a ROM 604 in which an operation program is written, and a RAM 605 for performing predetermined arithmetic storage is connected to the operation switch group 601 and the display unit 602 via an input / output interface 606 and an output interface 607. It

Operation switch group 6 including a large number of switches
Reference numeral 01 is configured in a key matrix form, and an operation key is input through the input / output interface 606 by a key scanning operation with a small number of connection lines. The arbitrarily operated switches of the operation switch group 601 are read by key scanning, and the contents are displayed on the display unit 602 and are sequentially written in the RAM 605.

The device body 4 has a CPU similar to the operation unit 6.
A control unit including 401, a RAM 402, and a ROM 403, an input interface 404, an output interface 405, a driving circuit 406, a driven unit 407, and an input signal source 408 are provided. Driven part 407
Is a carrier drive motor 44 for driving the carrier to a designated disc position, a slider drive motor 80 for loading the disc from the storage position to the playing position,
A pickup drive motor 56 for moving the disc information reading pickup in the disc radial direction, various display elements, and the like.

The input signal source 408 includes a carrier position sensor 50 composed of optical means for detecting the carrier movement position, carrier limit SWs 49a and b provided so that the carrier does not deviate from a predetermined movement section, and a disc. Slider limiters SW89a, b for detecting the storage position and the playing position, presence / absence of a specified disc at the time of loading, disc presence / absence / front / back detection sensor 61 for detecting front / back, disc discriminating position SW89c for indicating the operating position of this sensor 61, Pickup limiter switch 69 that detects the innermost and outermost positions of the pickup
a, b, a disk motor speed sensor 1 for detecting that the disk drive motor 54 has reached a predetermined number of revolutions, a disk motor speed sensor 2 for detecting stop of the motor, and a control detected by a disk through a predetermined demodulation circuit. An information detection unit for detecting information such as a signal indicating the innermost circumference of the recording, the outermost circumference of the recording or the recorded music number from the signal.

The drive circuit 406 uses 2-bit information as an input source for controlling the driving and stopping of each motor in the forward direction or the reverse direction. For example, (0, 0) is stopped, (0, 0)
1) is the forward direction and (1,0) is the reverse direction. Further, in order to change the speed as necessary, 3-bit information obtained by adding 1 bit indicating high speed and low speed to the above control is used as an input source, and (0,0,0) is stopped, (0,
0,1) is forward direction, low speed, (0,1,0) is reverse direction, low speed, (1,0,1) is forward direction, high speed, (1,1,0) is reverse direction, low speed You can also do it. Further, the speed control means using a plurality of output bits and the D / A converter can be combined.

The apparatus main body 4 and the operation unit 6 are connected by a bidirectional data transmission system 460, and both CPUs 401 and 6 are connected.
03 is a peripheral interface adapter (PIA) 40
Handshake mode signal transmission is performed as a timing signal for predetermined encoded parallel data and data transmission via 9,608. The device body 4 drives the mechanism to a mechanical initial position (disk drive motor stop, slider release, carrier home position, etc.) by turning on the power, and after returning to the initial position, the bidirectional data transmission system 46
The operation unit 6 is requested to transmit the first disc number via 0. The operation unit 6 sends the first disk number to the main body 4 via the bidirectional transmission system 460 in response to the operation of the START key 10 (shown in FIG. 2) performed after the programming of the performance order is completed. The main body 4 drives the carrier 40 so that the supported disk number matches the carrier position. The stop position control of the carrier 40 is performed, for example, by comparing the count signal output from the position sensor 50 provided on the carrier with a reference count value corresponding to the storage position of the designated disk. During this time, the main body 4 and the operation unit 6 are AC
A display indicating that CESS is in progress is made (data for displaying ACCESS is sent from the main body 4 to the operation unit 6 by the bidirectional data transmission system 460).

When the carrier 40 reaches the designated position and stops, the slider drive motor 80 is driven and the corresponding disc is loaded to the playing position. At this time, when the disc discrimination position switch 89c provided in the middle of the loading mechanism is operated, the signal from the disc presence / absence / front / back detection sensor 61 is input, and the disc is loaded as it is only when the information surface is loaded in the correct direction. Is continued, and if it is determined that there is no disc to be loaded in the reverse direction, the loading mechanism is reversed and loading is stopped. At the same time, a display indicating an error is displayed on the display unit.

After the disc loaded in the playing position is properly clamped by the clamper 62 and the disc drive motor 54 is started and it is detected that a predetermined number of revolutions has been reached, the main body 4 operates the designated tune number on the operating portion. Request to 6. The designated music number is compared with the music number in the disc information, and the pickup 55 is driven at a high speed to the beginning of the designated music number.
When the designated song number is larger than the number of songs recorded on the disc, the pickup limiter switch 69b on the outer periphery is activated, and it is determined that the designated song cannot be found. At this time, the pickup 55 stops and returns to the inner circumference of the disc at high speed. Also in this case, an error is displayed.

When the pickup 55 arrives at the predetermined music number position, the pickup 55 enters the play state and plays the corresponding music. At the same time, the play is displayed on the display unit. When the performance of the predetermined music is completed (detection of the designated music number + 1), the display during the play is erased and the main body 4 requests the number of the next music and moves to the next performance. If the disk to be played next is different from the disk currently being played, the procedure described above is reversed, the disk is moved to a new disk position, and the disk is loaded and played in the same manner as described above. In the case of the same disc, the transmission of the program number to be played is requested and the performance is started.

FIG. 15 shows a circuit block diagram of the control section of the door 5. The door switch 1 provided on the front surface of the apparatus main body 4 includes resistors R ₁₁₁ , R ₁₁₂ , capacitors C ₁₁₁ ,
A pulse signal is generated by a differentiating circuit composed of C ₁₁₂ and is input to the AND gate 110 together with a carrier limiter switch 49a for detecting the home position of the carrier 40. The output of the AND gate 110 becomes the clock input of the T-type flip-flop 111. The two outputs Q and Q'of the T-type flip-flop 111 are input to the door open limiter switch 31a, the door close limiter switch 31b and the AND gates 113 and 114, respectively, and the outputs of the AND gates 113 and 114 are forward rotation, The door drive motor 26 is rotated via the drive circuit 112 as a reverse rotation signal. A power supply reset signal is applied to the reset terminal of the T-type flip-flop 111.

In such a control unit, when the power is turned on, a reset signal works regardless of the operation of the door switch 1 and the carrier position, and the T-type flip-flop 111 has Q =
Close limiter switch 3 because L, Q '= H is set
The door 5 is closed by driving in reverse until 1b becomes L level (closed state). On the other hand, the operation signal of the door switch 1 is a switch 49a for detecting the home position of the carrier 40.
Is valid only when is at the L level (at the home position), the T-type flip-flop 111 is inverted, and the open limiter switch 31a is normally rotated until the L level (closed state) is opened, the door 1 is opened, and the closed limiter switch 31b is opened. Is reversed to close to the L level (closed state), and the door 1 is closed.

In such a door control unit, the door 5 can be opened only when the carrier 40 having the performance system is at the home position, whereby a new disc is erroneously stored at the storage position of the disc being played. Prevent problems such as accidents. Next, the operation of the disc playing device having the above-described configuration is performed by the CPU 401 executing the subroutine shown by the flowchart of FIG. 23, which will be described.

First, regarding the storage of the disc, when the door switch 1 provided on the front surface of the apparatus body 4 is pushed, the door 5 automatically opens and the disc storage portion 32 provided immediately behind the door 5 appears. It suffices to insert the disc 2 into an arbitrary slot formed by the partition plate 35. At this time, the cam 73 of the carrier 40 in the home position
Since the disc stopper 71 is in the predetermined blocking position by the engagement with (see FIG. 8), the accommodated disc is securely mounted in the storage portion 32 without deviating backward. At the same time when the disc is stored, the title of the disc is recorded in the index part 13a of the corresponding index plate 13 provided in the operation part 6 and the title of the disc is recorded in the MEMO part 13b. You will be able to search for. When the door switch 1 is pressed again after the storage of the disks is completed, the door 5 is automatically closed and the door close limiter switch 31b is closed. In response to an output indicating that the door close limiter switch 31b is closed again, that is, a disk storage completion detection signal, the carrier assembly 64 sequentially scans each storage slot of the disk storage unit 32 to make disk presence / absence determination for all slots. Therefore, the movement is started (steps S40 and S41). At this time, the disc stopper 71 that prevents the stored disc from rolling backward is provided with a cam 73 protruding from the carrier 40 as the carrier assembly 64 moves and a cam pin 74 fixed to a stopper arm 72 that supports the disc stopper 71. Is gradually disengaged, and it is rotated counterclockwise from the state of FIG. 8B by its own weight and retracted to a position where it does not hinder pulling out the stored disk (see FIG. 9).

Each storage slot position (disk storage position) of the disk storage portion 32 corresponds to each slit of the slit plate 51 constituting the carrier position detection sensor 50, and based on the output of the carrier position detection sensor 50. The carrier assembly 64 sequentially stops at each storage slot position (step S43). Carrier assembly 6
After 4 stops, loading (conveying) the storage disc
The slider 58 starts to move. When the carrier 40 stops at the storage slot position, the slider 58
18A is in the state shown in FIG. 18A, and the slider drive motor 80 is started in this state to move the slider 58 rearward (in the direction of the arrow in FIG. 18). . As a result, the pull-out roller 78 comes into contact with the outer circumference of the disc and the disc is loaded as the slider 58 moves (step S44).

The slider 58 is provided with a cam portion 58a of the slider 58 for loading the disc, and the disc discrimination position switch 8
Turn on 9c. In response to the turning on of the switch 89c, the guide plate 60 as shown in FIGS.
The disc presence / absence / front / back discriminating sensor 61 provided at a is activated to determine the presence / absence of a disc (step S).
45). If there is no disk, the slot number, that is, disk storage position information, is stored in the memory 1 in the RAM 402 (shown in FIG. 14) based on the output of the carrier position detection sensor 50 (step S47). After the determination of the presence / absence of the disc is completed, the slider 58 changes the moving direction to return the disc to the storage section 32. When the return of the disc is completed, the carrier assembly 64 moves to the adjacent storage slot position, the presence or absence of the disc is determined by the same operation as described above, and thereafter, the sequential scanning is performed by the same operation until the final slot (step S48, S49).
When the scanning is completed, the carrier assembly 64 returns to the home position, and the song can be selected. The scanning shown in FIG. 23 may be performed in response to power-on.

The number key 7 of the operation unit 6 is used for the music selection method.
Use the to specify the disc (slot) number and song number in order, and open and close multiple index plates 13 to select the desired disc.
There is a method of designating by 5 (designation of music is performed by using the number key 7). In the case of designating and registering the fifth song of the third disc and the tenth song of the 23rd disc among the stored discs by the former song selection method, for example, FIG.
This is performed by operating the number key 7 and other keys in accordance with the operation procedure shown in (a). On the other hand, when the third song of the eighth disc and the fifth song of the 33rd disc are designated and registered by the latter song selection method, first, FIG.
6 (b) and 6 (c), open the index plate 13 of the page on which the corresponding disc number is entered, operate the index key 15 (indicated by diagonal lines in the figure) corresponding to the disc number, and then press the number key 7 This is done by designating the tune number by, and then operating each key according to the operation procedure shown in FIG. When the index plate 13 is opened or closed, the index switch associated with it is actuated and the contents of the key are automatically changed. The designated disk (slot) number and music number are registered in the memory 2 in the RAM 402.

The designation registration of the disc number and the song number by any of the above song selection methods is completed, and the START key 1 is pressed.
When 0 is pressed, the ACCESS IND 20 lights up and each mechanism starts operating. The operation of each mechanism will be described below with reference to the flowchart of FIG. In response to a start command from the START key 10, the first designated and registered slot (disk) number is read from the memory 2 (step S1), and whether or not this slot number is registered in the memory 1, that is, the slot It is determined whether or not a disc is loaded (step S2).
If it is not attached, the next designated slot number is read (step S13). When it is determined that the carrier assembly 64 is mounted, the carrier assembly 64 starts moving to the designated slot position (step S3).
At this time, the disc stopper 71 is attached to the disc storage portion 3
As in the case of the scanning of No. 2, it is rotated counterclockwise from the state of FIG. 8 (b) and retracted to a position where there is no hindrance to pulling out the housed disc to the playing position. As the carrier assembly 64 moves, the DISK IND 16 counts up and stops at the number corresponding to the slot position, and at the same time, the AC
The CESS IND 20 goes out.

After the carrier assembly 64 stops at the designated slot position, the designated music number of the designated disc is read from the memory 2 and whether or not the designated music number is registered in the memory 1, that is, the designated music number is stored in the designated disc. It is determined whether or not the number of recorded songs is outside (step S6) (registration of the song number to the memory 1 will be described later). If it is registered, the next designated slot number is read (step S14). When it is determined that the disc is not registered, the slider 58 starts moving to load the disc housed in the slot to the playing position (step S7). STAND along with movement of slider 58
BY IND 19 lights up. This STAND BY
The IND 19 is lit until the disc is mounted on the turntable 100 and the disc drive motor 54 rotates to start playing.

The operation of the slider section will be described with reference to FIG. 18. When the carrier 40 stops at the designated disk position, the pull-out roller 78 and the reset roller 79 attached to the slider 58 are shown in FIG. It is in the state shown. In this state, the slider drive motor 80 is started, and the slider 58 is moved rearward (in the direction of the arrow in the figure). As a result, as the slider 58 moves, the disk, in which the pull-out roller 78 contacts the outer circumference of the disk, engages with the clamper 62, that is, the playing position (the support guide 4 having the inclined surface 43a provided on the carrier 40).
It moves to 3) (FIG.18 (b)). Slider 58
The disc conveyed by is set on the support guide 43 of the carrier 40. After that, the slider 58 is shown in FIG.
As shown in (c), the movement continues further from the set position of the disc, whereby an extra stroke S is provided between the disc and the outer periphery thereof. In this extra stroke S, the disc clamping operation described later is performed (step S10).

The slider 58 is provided with a disc discriminating position switch 89 at its cam portion 58a during loading of the disc.
Turn on c. In response to the turning on of the switch 89c, the guide plate 60a as shown in FIGS.
The disc presence / absence / front / back discriminating sensor 61 provided on the disc is operated, and disc presence / absence and front / back discrimination are performed again (steps S8 and S9). If there is no disc or if the disc is on the back side, the slot number is written in the memory 1 (step S12), and the slider 58 changes the moving direction to return the disc to the storage section 32 (step S13). At the same time ERROR IND
21 lights up. If it is normal, the loading operation is continued and the disc is set to the playing position.

The disc 2'in the playing position is shown in FIG.
As shown in FIG.
It is supported by the support guide 43 so as to be lower than the center of by a distance t ₁ . After the disc is set at the playing position, the guide groove 9 of the engaging member 97 provided on the slider 58 is formed by the above-described surplus stroke S of the slider 58.
7a and a guide pin 96 fixed to the clamp arm 68
Engage with each other to rotate the clamp arm 68 in the closing direction. The clamper 62 is rotated along with the rotation of the clamp arm 68.
Is inserted into the turntable 100 through the disc center hole. At the time of insertion, the magnetic material 99 on the head of the clamper is pulled by the yoke 102 in the turntable 100, so that the taper portion 62a of the clamper 62 lifts the disc mounted on the support guide 43 to mount the turntable 100. The disc is press-clamped on the surface 100a. At this time, the center of the disk 2 ″ is higher than the center of the disk 2 ′ on the support guide 43 by a distance t ₂ (t ₂ <t ₁ ) (see FIG. 20).

When the mounting of the disc on the turntable 100 is completed, the slider limiter switch 89b is turned off.
N and clamp completion is detected. (Note that the switch 89a
Detects the home position position of the slider 58. The disk drive motor 54 is started in response to the switch 89b being turned on (step S11). When the disk drive motor 54 reaches a constant speed, the pickup 55 starts moving at a high speed to the beginning of the designated music number (step S).
17). At this time, the ACCESS IND 20 is turned on, and an information reading device (not shown) including a demodulation circuit and the like sequentially operates a predetermined servo system such as a tracking device and performs sequential operations so that the information contents are correctly extracted. . At this time, if the disc is not properly mounted or the disc surface is damaged, the information cannot be read correctly. Therefore, when this is detected (step S1
8) Then, the reading device renders the disc unreadable due to imperfections, stores the slot number in the memory 1 (step S16), and returns the disc to the original slot (steps S13, S15). If the information can be read, the pickup 55 is accessed to the designated song and the pickup 55
Stops at the specified song position, the PROGRAMIN that is counting up at the same time as the pickup 55 starts moving.
D7 stops counting and displays the song number. The pickup 55 shifts from the stop position to constant speed running and starts playing (step S21). STANDBY IN during performance
D19 and ACCESS IND20 are turned off, PLAY
The IND 18 lights up.

FIG. 2 shows the performance state (clamp state).
As shown in FIG. 1, the outer periphery of the disc 2a being played overlaps with the outer periphery of the disc 2b located in the disc accommodating portion 32, and further, is located within the outer edge of the partition plate 35. As a result, the depth of the apparatus main body 4 can be reduced, and the amount of pulling out the disc at the time of loading can be reduced. Further, when the outer circumference of the disc 2a being played is located between the parallel portions 39 of the partition plate 35, there is an effect that it is possible to prevent erroneous storage when the disc is stored in the storage portion 32 after the performance. The shape of the partition plate 35 on the playing position side is not limited to the shape having the parallel portion 39 shown in FIG. 6, but only the tapered portion 35a is provided as shown in FIG. The outer circumference of the inner disk may be positioned, and FIG.
As shown in (b), the outer periphery of the disc being played may be positioned between the ends of the plate-shaped partition plate simply as a plate.

When the performance of the designated music is completed and all the performances of the programmed music are completed (steps S22 and S2).
3, S24, S25, S28), PLAY IND18
Turns off and the pickup 55 returns to the home position. After that, the disc clamp is released (step S
26), the disc is returned to the disc storage portion 32 (step S27). Then, the carrier assembly 64 returns to the home position and ends a series of operations (step S29). Then, when the door 5 is opened along with the replacement of the storage disk, the door closing limiter switch 31
b is turned off, and in response thereto, the stored contents of the memory 1 are cleared (steps S30, S31).

Next, the operation in a special case will be described. First, when the disc presence / absence / front / back discrimination sensor 61 determines that the disc is “absent” or the disc is “back side” during loading of the disc, the slot number is stored in the memory 1 and the moving direction of the slider 58 is determined. The disc is reversed and the disc is returned to the disc storage portion 32, and the carrier assembly 64 moves to the next designated disc (slot) position or returns to the home position when there is no designated tune.

When the pickup 55 starts moving and searches for a designated song, if the designated song number is larger than the number of songs recorded on the disc, that is, there is no designated song and the song number cannot be detected from the disc. In this case, the pickup 55 is returned to the home position by the operation of the pickup limiter switch 69b on the outer periphery, and the disc (slot) number and the designated music number are stored in the memory 1. Then, after releasing the clamp of the disc and returning the disc to the storage section 32, the same operation as described above is performed.

When the movement to the next registered disc or music is instructed by the operation of the NEXT key 11 during the performance, if the next designated music is recorded in the music being played, that music is recorded. When the pickup 55 is moved to the head portion and the disc is switched to the next disc, the same operation as in the case where there is no designated song described above is performed. The same operation is performed when the AGAIN key 12 is instructed to perform again according to the contents registered in the memory.

The disc playing device having such a structure can be applied to various disc sizes, but by adapting to a so-called compact disc, which is a digital audio disc having a small diameter, the disc playing device is superior to the conventional jukebox. Miniaturization is possible. Further, the present invention is not limited to the above embodiment, and various modifications can be made. For example, the disc playing means including the pickup 55 may be provided above the disc housing portion 32. Further, although the positional relationship between the disk and the disk playing means is brought into a playable positional relationship by moving the disk, it is also possible to move the disk playing means to the disk housing portion. .

[0053]

As described above in detail, in the disc playing device according to the present invention, the disc storing portion capable of storing a plurality of discs in an array and the disc storing portion is relatively movable in the disc arranging direction. And a disc selecting means for selecting the disc, and a control means for positioning the disc accommodating portion and the disc selecting means with respect to each other so as to bring the disc selecting means to the accommodating position corresponding to the designated disc among the plurality of discs. Including a detection means for detecting the specified disc in a non-reproducible state and a storage means for storing the storage position information corresponding to the specified disc in response to the output of the detection means. The detecting means is provided in the disk selecting means.

Therefore, when the disc selecting means reaches the position where the designated disc is stored, the detecting means provided in the selecting means can immediately detect whether or not the disc can be reproduced. That is, disc detection, performance, etc. can be performed quickly and smoothly. Further, since the detection means is provided in the disk selection means,
Since it is not necessary to install such detection means for each disk, the structure can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a disc playing device according to the present invention.

2 (a) is a plan view of an operating portion, FIG. 2 (b) is a front view including a partial cross section, and FIG. 2 (c) is a side cross-sectional view.

FIG. 3 shows a plan view of a disk playing device body.

FIG. 4 shows a front view of a disk playing device body.

FIG. 5 shows a side view of the disc playing device body.

FIG. 6 shows a schematic perspective view of a disc storage portion.

7 (a) is a view seen from the direction of arrow A in FIG. 6,
FIG. 7B shows a diagram in a playing state viewed from the direction of arrow B in FIG.

8A and 8B are operation explanatory views of the disk stopper, FIG. 8A is a plan view thereof, and FIG. 8B is a side view thereof.

9A and 9B are operation explanatory views of the disk stopper, FIG. 9A is a plan view thereof, and FIG. 9B is a side view thereof.

FIG. 10 shows a plan view of a slider portion.

FIG. 11 shows a front view of a slider portion.

FIG. 12 (a) is a plan view including a partial cross section of a clamper portion, and FIG. 12 (b) is a front view including a partial cross section.

FIG. 13 shows a side view of a clamper portion.

FIG. 14 shows a block diagram of a control system.

FIG. 15 shows a circuit block of a door control unit.

16 (a) to 16 (d) are diagrams showing an operation procedure at the time of music selection.

FIG. 17 is a flow chart for explaining the operation of each mechanism.

18 (a) to 18 (c) are views for explaining the operation of the slider section.

FIG. 19 is a diagram showing a positional relationship between each member when disc presence / absence / front / back determination is performed, and FIG. 19 (a) is a plan view;
FIG. 19B shows a side view.

FIG. 20 shows a correlation diagram of the disc in the storage position and the playing position.

FIG. 21 is a diagram showing a positional relationship between a partition plate, a guide plate and a disc in a playing state.

22 (a) and 22 (b) are plan views showing another shape of the end portion on the performance position side of the partition plate.

FIG. 23 is a flowchart showing the scanning operation of the disc storage portion.

[Explanation of symbols for main parts]

 2 disc 4 device body 5 door 6 operation part 22 under base 26 door drive motor 32 disc storage part 34 support base 35 partition plate 36, 37 support member 40 carrier 43 support guide 44 carrier drive motor 50 carrier position detection sensor 54 disc drive motor 55 Pickup 56 Pickup drive motor 58 Slider 60a, 60b Guide plate 61 Disc presence / absence / front / back detection sensor 62 Clamper 63 Clamp arm 64 Carrier assembly 71 Disc stopper 78 Pull-out roller 79 Reset roller 80 Slider drive motor 96 Guide pin 97 Engagement member 98, 101 magnet 100 turntable

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G11B 27/10 L 8224-5D

Claims (1)

[Claims] 1. A disk storage unit for storing a plurality of disks in an array, a disk selection unit that is relatively movable in the disk array direction with respect to the disk storage unit, and selects the disks; A disc playing apparatus comprising: a disc storage unit and a control unit for positioning the disc selection unit relative to each other so as to bring the disc selection unit to a storage position corresponding to a designated disc among the discs. A disc that is in a non-reproducible state, and a storage unit that stores the storage position information corresponding to the designated disc in response to the output of the detection unit. A disk playing device, wherein the detecting means is provided in the disk selecting means.