JPS58164059A - Disk player - Google Patents

Abstract

PURPOSE:To always store data regarding invalid numbers corresponding to loaded disks, by clearing the content of a memory is cleared and storing the invalid numbers again whenever a door is opened. CONSTITUTION:When the performance of an assigned music is completed and the performance of all programmed music is completed, a pickup 55 is returned to the home position, and the disk is released from the clamped condition and returned to a disk-containing section 32. Then, a carrier assembly 64 is returned to the home position, and thus, a series of operation is terminated. Moreover, whenever a door 5 is opened with a purpose of exchanging a contained disk, etc., a door close limiter switch 31b is turned off and, correspondingly, the content stored in a memory is cleared.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc playing device, and more particularly to a disc playing device that can store a plurality of discs and can sequentially select any of the stored discs for continuous playing. be.

A jukebox is generally known as such a disc playing device. However, the main body of conventional jukeboxes is very large, and it is very troublesome to insert and remove discs from the disc storage compartment, making them unsuitable for home jukeboxes and not suitable for commercial use. Most were used.

In addition, the configuration required a special key to open and close the door when changing disks, etc., which was very disadvantageous in terms of usability. I didn't like it because I didn't want to hear it.

B. An object of the present invention is to provide a disc playing device that is extremely compact, allows easy attachment and removal of discs, and allows smooth program performance.

Recently, several types of means have been proposed to greatly increase the amount of information m stored on a disc by digitally inputting a signal, compared to a conventional audio disc in which signals are inputted in an analog manner. In particular, the method of using a disc, generally called a compact disc, which uses laser light to pick up signals, has a small diameter of 120 m, making it easy to handle, and allows the performance device to be made smaller. Banko has a playing time of 1 hour on one side, which is about 1.5 hours longer than the playing time on both sides of a conventional audio disc.
It can store twice the amount of information. Therefore, for example, 50 discs can store 1,000 songs with a playing time of 3 minutes, and since the thickness of a compact disc is approximately 1.2n+m, 50 discs will be 60m thick. You can store up to 1000 songs in it.

In this way, by using the combination disc, it is possible to provide an extremely small jukebox that can be used in a general household. By using the jukebox of this invention, there is no need to prepare a separate disc storage box to store many discs, and since it is possible to select and play discs without touching the discs at all, it can be used by women and dwarfs. It will not damage the disk or damage the device.

The disc performance/performance device according to the present invention includes a disc storage section that can store a plurality of discs arranged in a predetermined pitch, a disc playing means that is movable in the direction of the arrangement of the discs in the disc storage section, and a combination of the discs and the disc playing means. and a means for bringing the positional relationship to a playable positional relationship, and in response to closing the door of the disc storage section or turning on the power, the storage slots of the disc storage and handle are sequentially scanned and the disc is loaded. Furthermore, when a specified slot is accessed in the process of sequential playback according to a pre-specified order, it is detected that the disk installed in that slot is in a non-playable state, and the disk is in a non-playable state. The slot number which is in the installed or unplayable state is stored in the storage means, and the stored contents 5- are cleared when the door is opened.

Furthermore, in response to closing the door of the disk storage section or turning on the power, each storage slot of the disk storage section is sequentially scanned, a slot in which no disk is installed is detected, and the slot number is stored in the storage means. , the memory contents are cleared when the door is opened.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the overall structure of a disc playing device according to the present invention. In the figure, reference numeral 4 denotes a main body of the device that can accommodate a plurality of discs 2 and automatically play the discs, and has a housing structure that allows other devices of approximately the same size, such as amplifiers and tuners, to be stacked on top of each other. There is. For example, a disk insertion opening 3 is formed at the front of the apparatus main body 4, and a disk storage section (described later) is provided near the insertion opening 3 so that a disk can be easily inserted and removed. A door 5 for closing the insertion port 3 is attached to the main body 4 of the apparatus 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. Reference numeral 6 denotes an operation section that sends various commands to the main body 4 of the apparatus, and is separated from the main body 1 of the apparatus and connected by wired or wireless means, for example.

FIG. 2 shows the configuration of the operating section 6, in which (a) is a plan view, (a) is a front view including a partial cross section, and (c) is a side sectional view. The operation panel 6 includes number keys 7 from O to 69 for specifying the disc number and track number you want to select, and an ENT key 8 for registering the specified number in memory. ALL key to play sequentially from the first disc or to play all songs on a specified disc9. 5TART key to start playing after memory registration is complete 10.
NEXT to move to the next registered disc or song while playing a disc or song registered in memory
Key 11. An AGAIN key 12 is provided to cause the music to be played again according to the contents registered in the memory. Furthermore, a plurality of index plates 13 are provided as storage means on which the title, track number, etc. of the stored disc can be written, the contents can be changed in connection with disc replacement, and can be easily searched. In order to detect the index plate being searched in conjunction with this plate 13, a plurality of index plates 14 corresponding to the number of disks 13 are provided to the index plate 1. Each of the index keys 15 from 1 to 5 for designation is attached. In index plays I to 13, it is possible to easily change the titles 1 to 1 of the disc, etc., in connection with the preparation of the disc.

In addition, both the device main body 4 and the operation section 6 have the following:
Disc rND16 and U PROG R that display the specified or playing disc number and track number
ΔMIND 17. PLAY indicates that the player is playing.
IND18. 5TAN lights up after the carrier assembly (described below) stops at a predetermined position until it is ready to play.
D BY IND i19, ΔCCFSS IND20 that lights up while the carrier assembly and the pickup described below are moving to a predetermined position
．． Furthermore, there is a display section with an ERRORIND 21 that lights up when there is no disc at the specified disc number position or when it is detected that the front and back sides have been stored incorrectly during a performance operation.

In the above configuration, the operating section 6, which integrally forms the storage means and various operation keys, is provided separately from the device main body 4. ) may also be configured.

FIG. 3 shows the internal structure of the disc playing device according to the present invention, (ω is a plan view, (b) is a front view, (C
> is a side view. In the figure, first) If, door 5
The outer periphery is hidden by means such as painting, and on the left and right side there are support bins 23 fixed to the underbase 22.
It includes bearings 24a' and 24b that fit into the bearings 24a and 23b, respectively. Bearing 24a.

For example, a fan-shaped gear 25 is attached to one side 2.48 of 24b. A motor 26 and a speed reduction mechanism 27 as a drive source for opening and closing the door 5 are fixed to the underbase 9-22, and a final stage gear 28 of the speed reduction device IM27 meshes with the sector gear 25.

A cam 30 having a recess 30a on the peripheral wall is fixed to the shaft 29 of the final stage gear 28, and by fitting into the recess 30a, the cam 30 detects the opening limit and the closing limit of the door 5. 31a and 3'lb are in contact with the peripheral wall of the cam 30.

Disc storage section 3 for storing a plurality of discs 2
As shown in a schematic perspective view in FIG. 4, the underbase 22 has a plurality of grooves 33 formed at a constant pitch.
A support base 34 fixed to the support base 34 and a plurality of partition plates 35 inserted into the grooves 33 of the support base 34 are provided, and a plurality of disks are vertically stored side by side in slots formed between the partition plates 35. The structure is as follows. The support base 34 is formed of a continuous integral member, and in addition to the above-mentioned groove portion 33, supports the lower end of the inserted disk 2 at two points, for example, and prevents the disk from moving in the front-rear direction. For example, a pair of supporting members 3-10-6.37 are integrally provided at the front and rear. A pair of support members 36 and 37 are arranged such that the member 36 on the front (disc insertion) side is the member 3 on the rear side in order to restrict the free movement of the mounted disc and prevent the disc from falling forward due to external disturbances.
7 and is configured to be higher than the support base 3.
4 may be formed separately.

In the disk storage section 32, the disk is stored between two partition plates 35, which reduces friction (and prevents damage to the disk) due to twisting between the disk and the partition plate when the disk is moved. Partition plate 3 to prevent
5 is the guide 1j! as shown in Figure 5fa). ! 38, and has a surface treatment such as Teflon coating on at least the surface of the contact portion with the disk. Further, the partition plate 35 has a tapered or curved shape at the front and rear of the guide wall 38 to facilitate the mounting of the disc and to serve as a guide when returning the disc from the performance position to the storage position. In particular, by forming the parallel portion 39 at the tip of the tapered 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 the fifth opening. The disk 2 can be reliably stored in the storage position.

In FIG. 3, the carrier 40 is installed through the side surface of the GJ.
The guide bar 42 is inserted into the circular hole 41a and the oblong hole 41b.
a, 42b and is movably supported. career 4
0 is provided with a support guide 43 having a recessed portion on its upper surface that conforms to and positions a disc pulled out from the disc storage portion 32 by a slider to be described later during performance.

This support guide 43 supports the lower end of the disk at two points, for example, so that the center position of the disk is slightly lower than the center position of a clamper, which will be described later. The support guide 43 on the disk storage section 32 side is formed with an inclined surface 438 so that the disk can be moved smoothly. In addition. By making the opposite side also an inclined surface, even if the disc deviates backward from the performance position ( ) when the disc is moved, it can be reliably returned to the normal performance position.

The carrier 40 is driven by a carrier drive motor 44 via a deceleration mechanism 45 and a wire 46 in the left-right direction in the figure. The wire 46 is suspended over a pulley 47 connected to a reduction gear 1m1145 and four pulleys 48a to 48d attached to the underbase 22, and is fixed to the carrier 40. Ki 1? Carrier limiter switches 49a and 49 detect the limit position of the rear 40 in the left and right direction
b is the setting number. Here, when the home position of the carrier 40 is set to the right limit position in the drawing, the switch 49a detects the home position of the carrier 40. Furthermore, a carrier position detection sensor 50 for detecting the moving position of the carrier 40 is provided. The carrier position detection sensor 50 includes a slit plate 51 fixed to the underbase 22 and having a slit formed along the moving direction of the carrier 40 corresponding to the disk storage position of the disk storage section 32;
A photocoupler 52 is attached to the carrier 40 so as to sandwich the slit portion of the carrier 40.

13- The mechanical base 53 attached to the carrier 40 includes a disk drive motor 54 for rotating the disk, a disk information reading pickup 55 movably supported with respect to the mechanical base 53, and a pickup drive for driving the pickup 55. A motor 56, a deceleration mechanism 57, a slider 58 for pulling out a disk stored in the disk storage section 32, a guide base 59 for guiding and supporting the slider 58, and the like are mounted. Furthermore, two guide plates 60a and 60b are provided to guide the disc taken out from the disc storage section 32 to the playing position.
, a disk presence/front/back detection sensor 61 for determining the presence or absence of a disk attached to either one of these two guide plates and whether it is front or back, a clamp arm 63 to which a clamper 62 for clamping the disk is attached, etc. It is attached to constitute a carrier assembly 64 and serves as a disc playing means.

The pickup 55 is supported movably in the radial direction of the disk 14 by a pair of guide bars 65a and 65b attached to the mechanical base 53.
Pulley 66 and mechanical base 5 coupled to deceleration mechanism 57
The pick-up drive motor 56 connects the wire 68 to a pulley 67 fixed to the pick-up drive motor 56 . Pickup limiter switches 69a and 69b are provided for detecting the limit positions of the pickup 55 on the inner and outer circumferences of the disk, respectively.

The two guide plates 60a and 60b are held at a predetermined distance by a stopper bin 70 (shown in Figure 15) located at the rear end to prevent the disk from escaping backwards, and the two guide plates 60a and 60b are held at a predetermined distance from each other by a stopper bin 70 (shown in Figure 15) that is located at the rear end and prevents the disk from escaping backwards. The ends on the part 32 side are bent outward from each other. This makes it possible to absorb misalignment between the disc storage section 32 and the carrier assembly 64, to reliably guide the disc to the playing position, and to prevent the disc from tilting at the playing position. In this embodiment, a thin member is used as the guide plate 608, 60b, and the other ends of the guide plate 608 and 60b are bent outward from each other. It may be configured such that it gradually widens as it approaches the tip.

In FIG. 3, the disc wrapper 71 that prevents the disc from escaping from the disc storage part 32 is
The stopper arm 72 is provided at the rear of the underbase 22 and is supported and positionally regulated by a stopper arm 72 which is rotatably supported by the underbase 22.

A cam pin 74 that can be engaged with a cam 73 protruding from the carrier 40 described above is fixed to the stopper arm 72. The cam bin 74 has a third carrier assembly 64.
When the disk stopper 71 is at the rightward limit position in Figure (■), that is, the home position, it engages with the cam 73 of the carrier 40 to move the disk stopper 71 as shown in the side view in Figure 6 (Tani top view, mountain). Place it in a blocking position to prevent movement.

On the other hand, when the carrier assembly 64 moves from the home position, as shown in the plan view in FIG. 7 and the side view in FIG. The disc is rotated counterclockwise in the figure to be retracted from the blocking position to enable movement of the disc.

The disc stopper 71 is configured to assume the above-mentioned blocking position within the limit that allows the disc to return to the support members 36 and 37 of the disc storage unit 32 when the disc in the disc storage unit 32 is pushed backwards, and the disc stops when the disc is pushed backwards. 36.37
It may be arranged in such a positional relationship that it contacts the disk when it is on top.

Further, the disc stopper 71 is connected to the disc storage section 32.
By engaging with the disk as a stopper member when attached to the disk, it prevents the disk from escaping from the storage portion 32, and
When the device is not in use, it acts as a regulating member that prevents the disk from moving from the storage section 32 due to disturbances such as vibrations.

Note that the regulating member may be provided separately from the disc stopper 71, and various configurations are possible for its configuration.

FIG. 8 shows the configuration of a part of the slider (ω is a plan view, and (b) is a front view. In the figure, the upper surface of the guide base 59 has, for example, three guide grooves 17-758. 75C are formed, and the slider 58 is connected to the guide grooves 75a to 75 through guide bins 768 to 760.
By engaging with G, it is capable of sliding linearly with respect to the kite base 59.

A drum-shaped pull-out roller 78 and a reset roller 79 are attached to the slider 58 via arms 77a and 77b. This is a disk moving member that rolls and moves the disk from the performance position to the storage section 32, 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 worm gear 83 connected to the motor 80 via a belt 81 and a pulley 82 are attached to the guide base 59 via a chassis 84. A drive pulley 86 is coaxially attached to the main gear 85 meshed with the worm gear 83, and a wire 87 wound around the pulley 86 is connected to the slider via pulleys 88a and 88b provided at both ends of the guide base 59, respectively. 58, and the slider 58 is driven by the driving force of a motor 80. Slider limiter switches 89a and 89b that detect the sliding limit of the slider 58 by engaging with the cam portion 58a of the moving slider 58, and a disk discrimination position that detects the presence or absence of a disk and the position for determining whether the disk is front or back when the disk is moving. A switch 8911 is provided.

FIG. 9 shows the configuration of a part of the clamper, where ω is a plan view including a partial cross section, FIG. 9(b) is a front view including a partial cross section, and FIG. 9(C) is a side view. In the figure, carrier 40 (
A clamp arm 63 is rotatably attached to a stand 90 with a shaft 91 as a support point.
It is biased by a spring 92 in the one direction shown in the figure, that is, in the opening direction. The amount of rotation of the clamp arm 63 is regulated by a pin 93 that protrudes from the base 90. The clamp arm 63 is attached with a guide portion 95 having a magnetic material 94 at its tip and a guide pin 96 that controls rotation of the clamp arm 63 in a counterclockwise direction, that is, in a closing direction.

When the guide bin 96 is loaded into the disc playing position, it engages with a guide groove 97a of an engaging member 97 provided on the slider 58 (see FIG. 8), and moves along this guide groove 97a. By doing so, the clamp arm 63 is rotated in the closing direction against the spring 92.

The roughly circular clamper 62 has a ring-shaped magnet 98° at the bottom and a magnetic body 99 at the head, and is loosely fitted into the clamp arm 63 at a guide portion 95. Note that the clamper 62 and the clamp arm 63 are made of non-magnetic material.

A drive motor 54 for driving the disk 2 is attached to the mechanical base 53 on the side facing the clamper 62, and a turntable 100 as a disk drive means is fixed to the rotating shaft of the motor 54 so that it can rotate freely. There is. The turntable 100 has a ring-shaped magnet 101 and a yoke 102 built therein.

In a part of the clamper having such a configuration, when a disc is loaded to the performance position, the guide groove 97a of the engaging member 97 provided on the slider 58 and the clamp arm 63
The clamp arm 63 is rotated in the closing direction by engagement with the guide bin 96. As the clamp arm 63 rotates, the head of the clamper 62 is inserted into the return table 100 through the center hole of the disk 3. At the time of insertion, the magnetic body 99 of the clamper head forms a magnetic circuit with the magnet 101 in the turntable 100 and the yoke IQ2, and is pulled by the yoke 102, so that the clamper 62
A part of the taper lifts the disc 2 placed on the support guide 43 (see FIG. 3(C)) of the carrier 40, and clamps the disc 2 against the mounting surface 100a of the turntable 100. Further, the clamp arm 63 rotates, and the engaged guide portion 9 is separated from the clamper 62 by the attractive force between the magnetic body 94 and the magnet 98.

Now, the clamping force is the force that the magnetic body 99 is attracted to the yoke 102, and the force that the magnet 98 at the bottom of the clamper is attracted to the magnetic body 99.
It becomes doubly strong with the force attracted by 4.

21- In the above state, the clamper 62. The disc 2 and turntable 100 are not in contact with other members, and the disc 2
can be rotated stably.

FIG. 10 is a block diagram of the υ section of the disc playing device according to the present invention, and the operating section 6 has a music selection function for specifying the disc number and track number to be selected, as explained in FIG. 2. A switch n\ 601 and a display section 602 for displaying the disc number, track number, or operation mode of the machine are provided. CPU603. A control unit composed of R, O, M 604 in which an operating program is written and a RAM 605 for performing predetermined calculations is connected to the aforementioned operation switch group 6 via an input/output interface 606 and an output interface 60.7.
01 and a display section 602.

An operation switch group 601 consisting of a large number of switches is configured in a keyed matrix shape and has an input/output interface 606.
Through the key scanning operation, the operation key input is accomplished with fewer connection lines. Any switch operated arbitrarily in the operation switch group 601 is read by key scanning, and its contents are displayed on the display section 6.
02 and sequentially written into the RAM 605.

The device main body 4 includes a CPU 401 and an RA similar to the operation section 6.
A control unit composed of M402 and ROM403, and an input interface 404. Output interface 40
5. Drive circuit 406. Driven part 407 and input signal source 4
0B is provided.

The driven unit 407 includes a carrier drive motor 44. which drives the carrier to a designated disk position. Slider drive motor 80 for loading the disc from the storage position to the performance position. A pickup drive motor 56 that moves the disk information reading pickup in the disk radial direction.
and various display elements.

The input signal source 408 includes a carrier position sensor 50 .
Carrier limit 5W49a provided so that the carrier does not deviate from within a predetermined movement section.

b. Slider limiter 5W89a,b that detects whether the disc is in the storage position or the playing position.

A disk presence/front/back detection sensor 61 that detects the presence or absence of a specified disk and its front and back sides during loading. This sensor 61
a disk discrimination position 5W89c that indicates the operating position of the pickup, a pickup limiter switch 69a, b that detects the innermost and outermost circumferential positions of the pickup, and a disk motor speed sensor that detects that the disk drive motor 54 has reached a predetermined rotation speed. 1. Disk motor speed sensor for detecting stoppage of the motor2. It consists of an information detection section that detects information such as a signal indicating the innermost recording circumference, the outermost recording circumference, or a recorded track number from a control signal detected from the disk through a predetermined demodulation circuit.

The drive circuit 406 uses 2-bit information as an input source to control driving and stopping of each motor in the forward or reverse direction.
1> is the forward direction, and (1,0) is the reverse direction.

Also, in order to be able to change the speed as needed, one bit was added to the above control to indicate high speed or low speed.
Bit information is used as an input source, for example, (0, O, O) is a stop direction, and (0, 0, 1) is a forward direction.

Low speed, (0,1,0) in the opposite direction, low speed, (1,0°1)
is forward direction, high speed, (1,1,0) is reverse direction.

It is also possible to set it to a low speed. Additionally, multiple output bits and D
It is also possible to use a /A converter as a speed control means.

The device main body 4 and the operation unit 6 are connected by a bidirectional data transmission system 460, and both CPUs 401 and 603 receive predetermined encoded parallel data and data transmission via peripheral interface adapters (PIA) 409 and 608. A handshake mode signal is transmitted as a timing signal.

When the device main body 4 is powered on, the mechanism is driven to the mechanical initial position (disc drive motor stopped, slider released, carrier home position, etc.), and after returning to the initial position, it is transmitted to the operating unit 6 via the bidirectional data transmission system 460. 1st
request to send the disc number. The operating section 6 sends the first disc number to the main body 4 via the bidirectional transmission system 460 in response to the activation of the 5TART key 10 (shown in the second diagram) after the completion of the program 25-mink in the playing order. 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 a count signal output from a 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 operation section 6 are
A display indicating that SS is in progress is displayed (from the main body 4 to the operation section 6
Data for CCESS display is bidirectional data transmission system 4
60).

When the carrier 40 arrives at 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 O-loading mechanism is activated, a signal from the disc presence/front/back detection sensor 61 is input, and the information surface is loaded in the correct direction. Loading continues as it is, and when it is determined that there is no disc to be loaded in the opposite direction, the loading mechanism reverses and stops loading. At the same time, an error message is displayed on the display section.

The disc loaded in the playing position is the clamper 6.
After the disk drive motor 54 is properly clamped to the main body 4, when it is detected that the disk drive motor 54 starts and reaches a predetermined rotation speed, the main body 4
requests the operating section 6 for the specified song number. The specified song number is compared with the song number in the disc information, and the pickup 55 is driven at high speed to the beginning of the specified song number. If the designated song number is greater 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 specified song cannot be found. At this time, the pickup 55 stops and returns to the inner circumference of the disk at high speed. Also in this case, an error is displayed.

When the pickup 55 arrives at the predetermined song number position,
The pickup 55 enters the play state and plays the corresponding song. At the same time, the play is displayed on the display section. When the performance of a predetermined song is completed (designated song number +1 is detected), the display indicating that the music is being played is turned off, and the main body 4 requests the number of the next song and moves on to the next performance.

If the next disc to be played is different from the disc currently being played, the above process is reversed, the disc is moved to a new disc position, and the disc is loaded and played in the same manner as described above. If the discs are the same, the system immediately requests transmission of the program number to be played and starts playing.

FIG. 11 shows a circuit block diagram of the control section of the door 5, in which a door switch 1 provided on the front of the device body 4 is shown.
is the resistance RI, 1. Ri+2. Condens → no c,,,
' A pulse signal is generated by a differentiating circuit composed of Cj, 2, and a carrier limiter switch 49a that detects the home position of the carrier 40 is connected to an AND gate 1.
Enter 10. The output of the AND gate \110 becomes the clock input of the T'J flip 70 tube 111. , the two outputs Q, Q of the T-type flip-flop 111
are input to the door open limiter switch f31a, 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 sent to the door drive motor via the drive circuit 112 as forward and reverse rotation signals. Rotate 26. A power supply reset signal is applied to the glue set terminal of the T-type flip-flop 111.

In such a control unit, when the power is turned on, the door switch 1 is
The reset signal works regardless of the operation and carrier position, and the T-type flip-flop 111 has Q=L, Q=1-
1, the close limiter switch 31b is driven in the reverse direction until it reaches the closed position, thereby closing the door 5. On the other hand, the operation signal of the door switch 1 is such that the switch 49a that detects the home position of the carrier 4o is at L level (
It becomes effective only when the T-type flip knob 111 is reversed and the close limiter switch 3 is in the home position).
Rotate forward until 1a reaches L level (closed state) and open door 1.
29-, and close the door 1 by rotating it in the reverse direction until the close limiter switch 31b reaches the L level (closed state).

In such a door control unit, the door 5 is activated only when the carrier 40 equipped with the performance system is at the home position.
This configuration allows the user to leave the disc in place at any time, thereby preventing problems such as accidentally storing a new disc in the storage position of the disc being played.

Next, the operation of the disc playing device having the above-described configuration will be explained.

First, regarding storage of disks, when the door switch 1 provided on the front of the main body 4 is pressed, the door 5 automatically opens and a disk storage section 32 provided immediately behind the door 5 opens.
Since the disc 2 is flattened, the disc 2 can be inserted into any slot formed by the partition plate 35. At this time, since the disc stopper 71 is in a predetermined blocking position due to engagement with the cam 73 of the carrier 40 in the home position (see Fig. 6), the stored disc is securely placed in the storage section 32 without deviating backward. It will be installed. At the same time as the disc is stored, the title of the disc can be recorded in the index section 13a = 30- of the index plate 13 corresponding to 1c provided in the operation section 6, and the track number etc. can be recorded in the MEMO section 13b. etc. can be easily searched. When the door switch 1 is pressed again after the disk has been stored, the door 5 is automatically closed and the door close limiter switch 31b is closed. In response to the output of the door close limiter switch 31b, the carrier assembly 64 starts moving to sequentially scan each storage slot of the disk storage section 32. (The scanning flowchart is shown in FIG. 19). At this time, a disc stopper 71 prevents the stored disc from rolling backwards.
As the carrier assembly 64 moves, the carrier 40
A cam 73 protrudes from the cam 73 and a cam bin 74 fixed to a stopper arm 72 that supports the distractor 1 to the collar 71.
The disc is gradually disengaged, and due to its own weight, it rotates counterclockwise from the state shown in Figure 6) and retreats to a position where there is no problem in pulling out the stored disc (see Figure 7).

Each storage slot position (disk storage position) of the disk storage section 32 corresponds to each slit plate 1~ of the slit plate 51 constituting the carrier position detection sensor 50, and the position of the carrier position is determined based on the output of the carrier position detection sensor 50. Assembly 64 stops at each storage slot position in sequence. After the carrier assembly 64 stops, the slider 58 that loads (transfers) the storage disk starts moving. When the carrier 40 has stopped at the storage slot position, the pull-out roller 78 and reset roller 79 attached to the slider 58 are in the state shown in FIG. The disk is moved backward (in the direction of the arrow in FIG. 14).As a result, the pull-out roller 78 comes into contact with the outer periphery of the disk, and the disk is loaded as the slider 58 moves.

The slider 58 turns on the disc discrimination position switch 890 with its cam portion 58a during the disc [1-ding].
let Turn on this switch 890! In response to this, the guide plate 6 is
A disk presence/absence/front/back discrimination sensor 61 provided at 0a is activated to determine the presence or absence of a disk. If there is no disk, its slot number is determined by the RAM 402 (
10) is stored in the memory 1 in FIG. After determining the presence or absence of a disc, the slider 58 moves the disc to the storage section 3.
Change direction of movement to return to 2. When the return of the disk is completed, the carrier assembly 64 moves to the adjacent storage slot position and determines the presence or absence of the disk by the same operation as in (a) above. From then on, the same operation is performed sequentially until the last slot is scanned. When the scanning is completed, the carrier assembly 64 returns to the home position and becomes ready for music selection. Note that it is also possible to adopt a configuration in which such scanning is performed in response to power-on.

There are two ways to select songs: one is to sequentially specify the disc (slot) number and the song number using the number keys 7 of the operation unit 6, and the other is to open and close a plurality of index plates 13 and select the desired disc using the index key 15. Due to the finger
(The song designation 33- is carried out using the number keys 7).

If you want to specify and register, for example, the 5th track of the 3rd disc and the 10th track of the 23rd disc among the storage discs using the former song selection method, press the number key 7 and other keys according to the operating procedure shown in Figure 12(a). This is done by operating the keys. On the other hand, when using the latter song selection method to specify and register the 3rd song on the 8th disc and the 5th song on the 33rd disc, first enter the corresponding disc number as shown in No. 12 and (C). Open the index plate 13 of the page that was displayed and operate the index key 15 (indicated by diagonal lines in the figure) corresponding to the disc number.
Next, specify the song number using the number key 7, and then
This is done by operating each key according to the operating procedure shown in Figure 2 (small). Note that by opening and closing the index plate 13, an index switch linked therewith is activated, and the contents of the keys are automatically changed. The specified disk (slot) number and song number are registered in memory 2 in RAM 402.

34- After completing the specified registration of the disc number and track number using one of the above song selection methods, press the 5TART key 10 to select A.
CCESS IND20 lights up and each mechanism starts operating. The operation of each mechanism will be explained below based on the flowchart shown in FIG.

5 In response to the start command from the TART key 10, the first designated and registered slot (disk) number is read from the memory 2, and this slot number is stored in the memory 1.
It is determined whether the disk is registered in the slot, that is, whether a disk is installed in the slot. If it is not installed, the next designated slot number is read. When it is determined that the carrier assembly 64 is installed, the carrier assembly 64 starts moving to the designated slot position. At this time, the disc stopper 71 rotates counterclockwise from the state shown in FIG. 6(b) in the same way as when scanning the disc storage section 32, until it reaches a position where there is no problem in pulling out the stored disc to the playing position. With the movement of the carrier assembly 64, DISK IND
16 counts up and stops at the number corresponding to the slot position, and at the same time the ACCESS rND 20 lights up.

After the carrier assembly 64 stops at the designated slot position, it reads out the designated song number of the designated disk from the memory 2 and checks whether or not that song number is registered in the memory 1, that is, the designated song number is outside the number of recorded songs on the designated disk. (The registration of the song number in the memory 1 will be described later). If registered, the next designated slot number is read. If it is determined that the disc is not registered, the slider 58 starts moving to load the disc stored in the slot to the performance position. 5JANDBY IND19 due to the movement of slider 58
lights up. The 5TANDBY IND 19 remains lit until a disc is mounted on the turntable 100, the disc drive motor 54 rotates, and a performance is started.

The operation of a part of the slider will be explained with reference to Figure 14.
! Then, the carrier 4o stops at the specified disk position F
14 (ω
It is in the state shown below. In this state, slider drive motor 8
0 starts and moves the slider 58 backward (in the direction of the arrow in the figure). As a result, as the slider 58 moves, the pull-out roller 78 moves the disc that is in contact with the outer periphery of the disc to the engagement position with the clamper 62, that is, the playing position (
The carrier 40 is moved to a support guide 43 having an inclined surface 438 (FIG. 14(b)). The disk conveyed by the slider 58 is set on the support guide 43 of the carrier 40. After that, slider 58
continues to move further from the set position of the disk, as shown in FIG. 14(C), thereby providing an extra stroke S between it and the outer circumference of the disk. During this extra stroke S, a dispersion clamping operation, which will be described later, is performed.

The slider 58 turns on the disc discrimination position switches 89 and c using its cam portion 58a during loading of the disc.
let In response to the ON of this switch 89c, as shown in FIG. Front and back discrimination is performed. If there is no disc or the disc is on the back, the slot number is written in the memory 1, and the slider 58 changes the direction of movement to return the disc to the storage section 32. At the same time, ERRORIND
21 lights up. If normal, the loading operation continues and the disc is set in the playing position.

The disc 2' in the performance position is supported by the support guide 43 so that its center is lower than the center of the disc 2 in the storage section 32 by a distance w1[1, as shown in FIG. After the disc is set in the playing position, the guide groove 97a of the engaging member 97 installed on the slider 58 engages with the guide bin 96 fixed to the clamp arm 68 due to the above-mentioned surplus stroke S of the slider 58. to rotate the clamp arm 68 in the closing direction. As the clamp arm 68 rotates, the head of the clamper 62 passes through the disk center hole and is inserted into the turntable 1°38-0. When inserting, the magnetic body 9 on the clamper head
9 is pulled by the yoke 1°2 in the turntable 100, the tapered part 62a of the clamper 62 lifts the disc placed on the support guide 43, and clamps the disc against the mounting surface 100a of the turntable 1oo. do. At this time, the center of the disk 2' is the support guide 4.
Distance t2 (t2<t+
) (see Figure 16).

When the mounting of the disc onto the turntable 100 is completed, the slider remic switch 89b detects the completion of ONL clamping. (The switch 89a detects the home position of the slider 58.) In response to the ON of the switch 89b, the disk drive motor 54 is started. When the disk drive motor 54 reaches a constant speed, the pickup 55 starts moving at high speed to the beginning of the designated song number. At this time, ACCESS I'ND 20 lights up, and information reading device W (not shown) including a demodulation circuit etc.
The system sequentially operates a predetermined servo system such as a tracking device, and performs sequential operations in order to extract information contents correctly. At this time, if the disc is not properly installed or the surface of the disc is damaged, information cannot be read correctly. memory and return the disk to its original slot. If the information can be read, the pickup 55 is accessed to the specified song, and when the pickup 55 stops at the specified song position,
At the same time as the pickup 55 starts moving, p ROa RA MrND7, which had been incremented, stops counting and displays the track number.

The pickup 55 moves from the stop position to constant speed running and starts playing. During the performance, 5TAND BYIND19.
ACCESS IND20 goes out and PLAY'
IND18 lights up.

In the playing state (clamped state), as shown in FIG. The positional relationship is such that This has the effect that the operation of the main body 4 of the apparatus can be made smaller and that the amount of the disk to be pulled out during loading can be reduced. Furthermore, when the outer periphery of the disc 2a being played is located between the parallel parts 39 of the partition plates 3; 5, it is possible to prevent the disc from being erroneously stored in the storage section 32 after the performance is finished. .

Note that the shape of the performance position side of the partition plate 35 is not limited to the shape having the parallel portion 39 shown in FIG. 4, and only a tapered portion 35a is provided as shown in FIG. The outer periphery of the disc being played may be positioned between the ends of the partition plate, or the outer periphery of the disc being played may be positioned between the ends of this plate-shaped partition plate, as shown in Figure 18 (ω). good.

When the performance of the designated music and all the programmed music are completed, the PLAY IND'18 goes out and the pickup 55 returns to its home position. Thereafter, the clamp on the disc is released and the disc is returned to the disc storage section 32.

Then, the carrier assembly 64 returns to the home position 41- and the series of operations ends. When the door 5 is opened to replace the storage disk, the door close limiter switch 31'b is turned off, and in response, the contents of the memory 1 are cleared.

Next, I will explain the operation in special cases. First, if the disc presence/front side discrimination sensor 61 determines that the disc is "absent" or the disc is "back side" while loading the disc, the slot number is stored in the memory 1 and the moving direction of the slider 58 is changed. The disk is reversed and returned to the disk storage section 3-2, and the carrier assembly 64 moves to the next specified disk (slot).
position or returns to the home position if there is no designated song.゛Also, when the pickup 55 starts moving and searches for the designated song, if the designated song number is longer than the number of songs recorded on the disc, that is, if there is no designated song and its stock cannot be detected from the disc. By operating the outer pickup limiter switch 69b, the pickup 55 returns to its home position, and its disk (slot) number and designated song number are stored in the memory 1. After releasing the disk clamp and returning the disk to the storage section 32, the same operation as described above is performed.

When a movement to the next registered disc or song is commanded by operating the NEXT key 11 during a performance, the platform for the next specified song recorded on the disc being played will move to the position at the beginning of that song. The pickup 55 moves to that part, and when switching to the next disc, the same operation as in the case where there is no designated song is performed. Further, the same operation is performed when the AGAIN key 12 is used to command the player to play again according to the contents registered in the memory.

Although the disc performance device with this configuration can accommodate various discrees, it is particularly suitable for small-diameter digital A-dio discs called compact discs. In comparison, ultra-miniaturization is possible with f118. Further, the present invention is not limited to the above-mentioned embodiments, and can be modified in various ways. For example, a configuration may be adopted in which a disc playing means including a pickup 55 is provided above the disc storage section 32.

Furthermore, although the disc is moved to bring the positional relationship between the disc and the disc playing means into a playable position, it is also possible to move the disc playing means to the disc storage section. It is.

As described in detail below, according to the present invention, each storage slot of the disk storage section is sequentially scanned in response to closing the door of the disk storage section or turning on the power, and detecting a slot in which no disk is installed. Furthermore, when accessing a slot specified by a slot that is sequentially played back according to a pre-specified order, it is detected that the disk installed in that slot is in a non-playable state, and a slot in which a disk is not installed or is in a non-playable state. The number is stored in memory and the stored contents are cleared when the door is opened.The registered invalid information number may change due to the replacement of the stored disc, so please do not open the door. By clearing the memory contents and re-loading the invalid numbers into the memory, it is possible to always store invalid number data corresponding to the mounted disk.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the overall configuration of the disc playing S device according to the present invention, Fig. 2 (ω is a plan view of the operating section; crests) is a front view including a partial cross section, and (C) is a side sectional view. , 3rd
Figure (a) is a plan view of the main body of the device, (b) is a front view, and (C)
4 is a side view, FIG. 4 is a schematic perspective view of the disk storage section, FIG. 5(a) is a view seen from the direction of the arrow in FIG.
l is a diagram in the performance state viewed from the direction of arrow B in Figure 4;
Figures 6 and 7 are explanatory views of the operation of the disc stopper, where (a) is a plan view, Figure 8 (a) is a side view, Figure 8 (a) is a plan view of a part of the slider, and (i) is a front view. , Fig. 9 (a is a plan view including a partial cross section of a part of the clamper, crest) is a front view including a partial cross section, (C) is a side view, Fig. 10 is a block diagram of the control system, Fig. 11 is the circuit block diagram of the door control section,
Figure 12 (ω ~ (Ichi) shows the operating procedure 45- when selecting a song. Figure 13 is a flowchart for explaining the operation of each i structure. FIG. 15 is a diagram showing the positional relationship between each member when determining the presence or absence of a disc and the front and back of the disc. (a) is a plan view, (a) is a side view, and FIG. Figure 17 is a diagram showing the positional relationship of the partition plate, guide plate, and disc in the playing state. Figure 18 (a) and 18) are the ends of the partition plate on the playing position side. 19 is a flowchart showing the scanning operation of the disk storage section. Explanation of the symbols of main parts 2... Disc 4... Apparatus main body 5
...Door 6...Operation section 22.
..... Under base 26 ..... Door drive motor 32 ..... Disk storage section 34 ..... Support base 35 ..... Partition plate 36.37..・・・・・・
Support member 40...Carrier 46-43...Support guide 44...Carrier drive motor 50...Carrier position detection sensor 54...
... Disk drive motor 55 ... Pickup 56 ... Pickup drive motor 58 ...
...Sliders 60a, 60b...Guide plate 61...
...Disc presence/front/back detection sensor 62...
・Clamper ~ 63...Clamp arm 64・
...Carrier assembly 71...Disk stopper 78...Pull-out roller 79...Reset roller 80...Slider drive motor 96...
・Guide bin 97...Engaging member 98.101...Magnet 100...Turntable 47! 7 questions 32

Claims (2)

[Claims] (1) A disk storage section that can accommodate a plurality of disks arranged at a predetermined pitch, a disk playing means that is movable in the disk arrangement direction of the disk storage section, and a positional relationship between the disks and the disk playing means that can be played. position control means for bringing the disc into a positional relationship; and in response to closing of the door of the disc storage unit or turning on the power, sequentially scanning each storage slot of the disc storage unit and detecting a slot in which no disc is installed; Further, a detecting means for detecting that a disk loaded in a specified storage slot of the disk storage section is in a non-playable state when the specified storage slot of the disk storage section is accessed in the process of sequentially playing the disk according to a predetermined order; a storage means for storing a slot number in which a disc is not installed or in a non-playable state in response to the output of the door, and a door open detection means for detecting that the door is opened, A disc playing device characterized in that the stored contents of the storage means are cleared in response. (2) A disk storage section that can accommodate a plurality of disks arranged at a predetermined pitch, a disk playing means that is movable in the disk arrangement direction of the disk storage section, and a positional relationship between the disks and the disk M playing section. position control means for bringing the disc into a possible positional relationship; and in response to closing of the door of the disc storage unit or turning on the power, sequentially scanning each storage slot of the disc storage unit and detecting a slot in which no disc is installed. The apparatus comprises a detection means, a storage means for storing the slot number in response to the output of the detection means, and a door open detection means for detecting that the door is opened, the storage means for storing the slot number in response to the output of the door open detection means. 1. A disc performance device, characterized in that the stored contents of said storage means are cleared by using a button.