JPS58164056A - Disk player - Google Patents

Abstract

PURPOSE:To enable to confirm the no-loaded condition of a disk containing section without making any access to slots, by storing the number of slots which are not loaded with disks in a memory in response to the opening of the door of the disk containing section or the conduction of the power supply to the disk player. CONSTITUTION:A carrier assembly 64 stops successively at each disk containing slot position based on the output of a carrier position detecting sensor 50. After the carrier assembly 64 stops, a slider 58 which carries a contained disk starts the movement. The slider 58 turns on a disk discriminating position switch 89c by means of its cam section 58a while a disk is loaded. In response to the turning on of the switch 89c, a sensor 61 for discriminating the existence or nonexistence and the front and rear sides a disk provided to a guide plate 60a starts operation and the existence or nonexistence of a disk is discriminated. When no disk exists, the number of the slot is stored in a memory in an RAM based on the output of the carrier position detecting sensor 50.

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 accommodate a plurality of discs and can sequentially select any of the stored discs for continuous performance.

A jukebox is generally known as such a disk player. However, the main body of conventional jukeboxes was very large, and it was very troublesome to take the discs in and out of the disc storage compartment, making them unsuitable for home jukeboxes and not being used for commercial purposes. Most of them were. In addition, the structure required a special key to open and close the door when changing disks, etc., which was very disadvantageous in terms of usability. Opening was not preferred because it would result in .

Therefore, the present invention has a very small size and a disk size of 1IIB.
An object of the present invention is to provide a disk playing device which is easy to play and can perform program playing smoothly.

Recently, several types of means have been proposed to greatly increase the amount of information stored on a disc by digitally inputting a signal, compared to a conventional audio disc that inputs an analog signal. In particular, a method using a disk generally called a compact disk that picks up signals using a laser beam has a diameter of 12011 mm.
1, making it easy to handle and allowing the performance device to be made smaller.Furthermore, the playing time for one side is about 1 hour, which is about 1.5 hours longer than the playing time for conventional audio discs on both sides.
It can store five times the amount of information. Therefore, for example, 50 discs contain 1000 songs with a playing time of 3 minutes.
Since the thickness of a compact disc is approximately 1.2R1111, 50 discs will have a thickness of 6 CIll, and as many as 1,000 songs can be stored on it. By using compact discs in this way, it is possible to provide an extremely small jukebox that can be used in general households. 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, it can be used even by women and dwarfs. There is no possibility of damaging the disk or damaging the device.

A disc playing device according to the present invention includes a disc storage section that can accommodate a plurality of discs arranged in a predetermined pitch, a disc playing means that is movable in the disk arrangement direction of the disc storage section, and a positional relationship between the discs and the disc playing means. and a means for bringing the disc into a position where it can be played, the storage slots of the disc storage section are sequentially operated in response to closing the door of the disc storage section or turning on the power, and the storage slots of the disc storage section are sequentially operated so that no disc is inserted. The slot number is configured to be stored in the storage means.

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 housing body that can store a plurality of discs 2 and automatically play the discs, and has a housing structure that allows stacking of other devices of approximately the same size, such as amplifiers and tuners. It becomes. 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 unit 6, in which fa) is a plan view, (b) 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 0 to 9 for specifying the disc number to select, the track number, and an ENT key for registering the specified number in memory.
Key 8. ALL key to play sequentially from the first disc or to play all songs on a specified disc9. 5 TART key 10 to start playing after memory registration is complete
．． Memo 5 - NEXT key 11 to move to the next registered disc or song during the performance of a previously registered disc or song. 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 as storage means on which titles, track titles, etc. of stored discs can be written, the contents can be changed in conjunction with disc replacement, and can be easily searched. A plurality of index inches 14 are provided corresponding to the number of index plates 13 in order to detect the index plate being searched in conjunction with this plate 13. In addition to the number key 7 above, index keys 15 from 1 to 5 specify the disc number.
are included with each. The index plate 13 is
In connection with disc replacement, disc titles, track titles, etc. can be easily changed.

In addition, both the device main body 4 and the operation section 6 have the following:
Disc I-ND 16 and 6 and PROGRAM IND 17. Displays the specified or playing disc number and track number. PLAY IND18. indicates that the performance is in progress. 5TAND BY IND19, which lights up after the carrier assembly, which will be described later, stops at a predetermined position until the band is ready for performance, and ACCESS IND2, which lights up while the carrier assembly and the pickup, which will be described later, move to a predetermined position.
0. Furthermore, there is provided a display section consisting of an ERRORIND 21 that lights up when there is no disc at the specified disc number position or when the disc is stored with the front and back sides erroneously detected during a playing 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 provided.

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, the outer periphery of the door 5 mentioned above is hidden by means such as painting, and on the left and right side there are support bins 23a fixed to the underbase 22,
Bearings 24a and 24b are fitted to the bearing 23b, respectively. Bearing 24a.

For example, a fan-shaped gear 25 is attached to one side 24a of 24b. Motor 2 as a drive source for opening and closing door 5
6 and a reduction mechanism 27 are fixed to the underbase 22, and the final stage gear 28 of the reduction mechanism 27 meshes with the sector gear 25.

A cam 30 having a recess 30a in the peripheral wall is fixed to the shaft 29 of the final stage gear 28, and a limiter switch 31a that detects the opening limit and closing limit of the door 5 by fitting into the recess 30a. , 31b is cam 3
It is in contact with the peripheral wall of 0.

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 3j4 fixed to and this support base 34
A plurality of partition plates 35 are inserted into the groove portions 33 of the disc 1, and a plurality of disks are vertically arranged and housed in slots formed between the partition plates 35. The support base 34 is formed of a continuous integral member, and in addition to the groove portion 33 described above, supports the lower end of the inserted disk 2 at two points, for example, and has a support base 34 for preventing movement of the disk in the front-rear direction. For example, a pair of supporting members 36 and 37 are integrally provided at the front and rear. A pair of support members 36 and 37 are used to control the free movement of the mounted disc, and the member 36 on the front (disc insertion) side is higher than the member 37 on the rear side in order to prevent the disc from falling forward due to external disturbances. The support base 34 may be formed separately from the support base 34.

In the disk storage section 32, the disk is stored between two partition plates 35, which reduces friction caused by twisting between the disk and the partition plate when moving the disk, and prevents damage to the disk. Partition plate 3 to
5 is the guide I! as shown in FIG. 5(a). 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. Particularly the taper part 38a on the performance position side
By forming a parallel part 39 at the tip of the disc, the disc 2 can be stored in the storage position after the performance is finished, so that the disc 2 can be played with the disc 2 positioned between the parallel parts 39 as shown in Fig. You can definitely do it.

In FIG. 3, the carrier 40 has a guide bar 42a,
42b and is movably supported. The carrier 40 is provided with a support guide 43 having a recessed portion on its upper surface to accommodate and position 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 side of the support guide 10-guide 43 facing the disk storage section 32 is formed with an inclined surface 4.38 so that the disk can be moved smoothly. In addition. By making the opposite side also an inclined surface, even if the disc deviates rearward from the performance position during movement of the disc, 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 /16 in the left-right direction in the figure. The wire 46 is installed over a pulley 47 connected to the speed reduction mechanism 45 and four pulleys 48a to 48d attached to the underbase 22, and is fixed to the carrier 40. Carrier limiter switches 49a and 49b are provided to detect the limit position of the carrier 40 in the left and right direction. Here, when the retracted position, that is, the home position of the carrier 40 is set to the right limit position in the figure, the switch 49a detects the home position of the carrier 40. Furthermore, a carrier position detection sensor 5o is provided for detecting the movement (zero position) of the carrier 40. It consists of a slit plate 51 having a slit and fixed to the underbase 22, and a photocoupler 52 mounted on the carrier 40 so as to sandwich the slit part of the slit plate 51.

A mechanical base 53 attached to the carrier 40 has a disk drive motor 54 for rotating the disk, a disk information reading pickup 55 movably supported on the mechanical base 53, and a pickup drive motor 56 for driving the pickup 55. 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. Further, two guide plates 60° and 60b are provided to guide the disc taken out from the disc storage section 32 to the playing position.
,, m''''''''''sheet'do7L/-h17)
.

A disk presence/front/back detection sensor 61 for determining the presence or absence of a disk attached to either side and whether it is front or back;
A clamp arm 63 to which a clamper 62 for clamping the disc is attached constitutes a carrier assembly 64, which serves as disc playing means.

The pickup 55 is supported movably in the radial direction of the disk by a pair of guide bars 658, 65b attached to the mechanical base 53.
The pick-up drive motor 56 connects the wire 68 to a pulley 66 connected to the mechanical base 53 and a pulley 67 fixed to the mechanical base 53 and drives the pickup drive motor 56 . A pickup limiter switch 69 for detecting the limit positions of the pickup 55 on the inner and outer circumferences of the disk, respectively.
a, 69b are provided.

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. Thereby, it is possible to absorb misalignment between the disc storage section 32 and the rear assembly 64 of the carrier 13, and to reliably guide the disc to the performance position, and to prevent the disc from tilting at the performance position. In this embodiment, thin members are used as the guide plates 60a and 6ob, and the other ends are bent outward from each other. It may be configured such that it gradually spreads as it approaches.

In FIG. 3, a disc stopper 71 that prevents the disc from deviating 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 it is at the rightward limit position in Figure (a), that is, at the home position, it engages with the cam 14-73 of the carrier 40 and the disc stopper, as shown in the side view in Figure 6 (plan view and city at ω). 71 is positioned at the blocking position to prevent movement of the disk.

On the other hand, when the carrier assembly 64 moves from the home position, the engagement with the cam 73 of the carrier 40 is released, as shown in the side view in FIG. The disk is rotated counterclockwise in the figure by a certain amount to retreat from the blocking position to enable movement of the disk.

The disc stopper 71 is configured to take the above-mentioned blocking position within the limit that allows the disc to return to the support part 036, 37 of the storage part 32 when the disc in the disc storage part 32 is pushed rearward, and the disc stops when the disc is pushed back to the support part 036, 37 of the storage part 32. 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.
When the 6M is not in use, it engages with the disk as a stopper member to prevent it from escaping from the storage section 32, and also prevents the disk from moving from the storage section 32 due to disturbances such as vibration when the 6M is not in use. It acts as a regulating member. 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, and (a)
is a plan view, and 〉 is a front view. In the figure, the upper surface of the guide base 59 has, for example, three guide grooves 75a to 75.
c is formed, and the slider 58 is connected to the guide bin 76.
By engaging with the guide grooves 75a to 75G via a to 760, it can slide linearly with respect to the guide base 59.

A drum-shaped ejection roller 78 and a reset roller 79 are attached to the slider 58 via arms 77a and 771).
Conversely, it is a disc moving member that rolls and moves the disc from the performance position to the storage section 32, and the slider 5
8 are spaced apart from each other by a predetermined distance in the sliding direction.

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 the wire 87 wound around the pulley 86 is connected to the slider 58 via pulleys 88a and 88b provided at both ends of the guide base 590, respectively. The slider 58 is driven by the driving force of the motor 80. detecting the sliding limit of the slider 58 by engaging with the cam portion 58a of the moving slider 58;
Slider limiter switches 89a and 89b are provided, and a disc discrimination position switch 89b is provided to detect the presence or absence of a disc and the position for determining whether the disc is front or back when the disc is moved.

FIG. 9 shows the configuration of a part of the clamper (ω is a plan view including a partial cross section, (b) is a front view including a partial surface, and (C) is a side view. In, carrier 40 (
A clamp arm 63 is attached to a stand 90 so as to be able to freely rotate from -17 to 17 with a shaft 91 as a support point, and is biased by a spring 92 in the clockwise direction 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 opening direction against the spring 92.

The approximately truncated conical 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 518-4 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 518-4 so that it can rotate freely. It has become. 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 and the yoke 102 in the turntable 100 and is pulled by the yoke 102, so that the clamper 62
A part of the taper lifts the disk 2 placed on the support guide 43 (see FIG. 3(0)) of the carrier 40, and clamps the disk 2 against the placement surface 100a of the turntable 100. Further, the clamp arm 63 rotates, and the guide portion 95, which was held by the attraction force between the magnetic body 94 and the magnet 98, is separated from the clamper 62.

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 due to the force attracted by 4.

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 control system of the disc playing device according to the present invention, and the operation unit 6 includes a group of music selection switches for specifying the disc number and track number to be selected, as explained in FIG. 2. 601 and a display section 602 that displays the disc number, track number, or operating mode of the machine. CPU401. A control unit configured by a ROM 604 in which an operating program is written and a RAM 605 for storing predetermined calculations is connected to the aforementioned operation switch group 60 via an input/output interface 606 and an output ink face 607.
1 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 can be performed using fewer connection lines. Any arbitrarily operated switch in the operation switch group 601 is read by key scanning, and its contents are displayed on the display section 602 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
08 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. Disk inertia 21 - Consists of a pickup drive motor 56 for moving the information reading pickup in the disk radial direction, various display elements, etc.

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.

b1 Slider limiter 5W89a that detects whether the disc is in the storage position or playing position, b10 - Disc presence/front/back detection sensor 61 that detects the presence or absence of a designated disc and whether it is front or back during loading. A disc discrimination position 5W89c indicates the operating position of this sensor 61, a pickup limiter switch 69a, b detects the innermost and outermost positions of the pickup, and a disc detects that the disc drive motor 54 has reached a predetermined rotation speed. Motor speed sensor 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 the recorded track number 22- 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. The forward direction and (1,0> are the reverse direction.

In addition, in order to be able to change the speed as necessary, we use 3-bit information as an input source, which is the above control plus 1 bit indicating high speed or low speed, and for example, stop (0, O, O'). , (0,0,1> in the positive 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, it drives a mechanism to a mechanical initial position (disk drive motor stop, slider release, carrier home position, etc.), and after returning to the initial position, is operated via a bidirectional data transmission system 460. 1st part 6
request to send the disc number. The operation unit 6 is a 5TART key 1 which is pressed after programming of the performance order is completed.
0 (shown in the second diagram), the first disc number is sent to the main body 4 via the bidirectional transmission system 460. 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 loading mechanism is activated, a signal from the disc presence/front/back detection sensor 61 is input, and the loading is continued only when the information side is loaded in the correct direction. continues, and if it is determined that there is no disk to be loaded in the opposite direction, the loading mechanism is reversed and loading is stopped. 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 specified 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 the discovery of the specified song is -2.
5- Determined to be incapable. At this time pickup 5
5 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-described process is reversed, the disc is moved to a new disc position, and the disc is zeroed 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, and the door switch 1 provided on the four sides of the main body includes a resistor R111, RLLI1, capacitor 26-C1], +, A pulse signal is generated by a differentiating circuit composed of C+u, and is input to an AND gate 110 together with a limiter switch 49a that detects the home position of the carrier 40. The output of the AND gate 110 becomes the input to the T-type flip-flop 111. The two outputs Q and C1 of the T-type flip-flop 111 become the inputs of the door close limiter switch 31a and the door close limiter switch 31b, respectively, and the AND gates 113 and 114, and the outputs of the AND gates 113 and 114 are positive. Turn,
The door drive motor 26 is rotated via the drive circuit 112 as a reverse rotation signal. A power reset signal is applied to the reset terminal of the T-type flip 70 tube 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 is set to Q=L, Q=1 to
1, the door 5 is driven in reverse until the time limiter switch 31b reaches the L level (closed state 1). On the other hand, the operation signal of the door switch 1 is valid only when the switch 49a that detects the home position of the carrier 40 is at the L level (at the home position), inverts the lower flip-flop 111, and the limiter switch 31a is at the L level ( The door rotates forward until the closed state fi!
Close the door 1 by rotating it in the opposite direction until it is in the 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 structure allows the disc to be opened, 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.
appears, so it is only necessary to insert the disk 2 into any slot formed by the partition plate 351. 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 is recorded in the index section 13a of the corresponding index plate 13 provided in the operation section 6, and the track list, etc. is recorded in the MEMO section 13b, thereby making it easy to check the title, track list, etc. of the stored disc. You will be able to search for 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 6
4 starts moving to sequentially scan each storage slot of the disk storage section 32. (The scanning flowchart is shown in the 19th
(shown in figure). At this time, the disk stopper 71 that prevents the stored disk from rolling backwards is connected to the cam 73 that protrudes from the carrier 40 as the carrier assembly 64 moves, and the stopper arm 29-part 72 that supports the distractor 1 to the collar 71. It gradually disengages from the cam bin 74 fixed to the cam bin 74, and due to its own weight, it rotates counterclockwise from the state shown in Fig. 6) and retreats to a position where there is no problem in pulling out the stored disc (Fig. 7). reference).

Each storage slot position of the disk storage section 32 corresponds to each slit of the slit plate 51 constituting the carrier position detection sensor 50, and the carrier assembly is performed based on the output of the carrier position detection sensor 50. 64 stops at each storage slot position in sequence.

After the carrier assembly 64 stops, the slider 58 that loads (transfers) the storage disk begins to move. When the carrier 40 stops at the storage slot position, the pull-out roller 7 attached to the slider 58
8 and the reset roller 79 are in the state shown in FIG. 14(a), and in this state, the slider drive motor 80 is started to move the slider 58 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 30 as the slider 58 moves.

During loading of the disc, the slider 58 turns on the disc discrimination position switch 89c with its cam portion 58a.
let In response to turning on the switch 890, the disk existence/front/back discrimination sensor 61 provided on the guide plate 60a operates as shown in FIG. If there is no disk, the slot number is stored in the memory 1 in the RAM 402 (shown in FIG.
The slider 58 changes the direction of movement to return the disc to the storage section 32. When the disk return is completed, the carrier assembly 64 moves to the adjacent storage slot position, and
The presence or absence of a disk is determined by the same operation as described above, and thereafter sequential scanning is performed by the same operation until the final slot. 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 use the number keys 7 on the operation panel 6 to sequentially specify the disc (slot) number and then the song number, and the other is to open and close a plurality of index plates 13 and select the desired disc using the index key 15. (Use number key 7 to specify the song)
There is.

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 stored discs using the former song selection method, press the number key 7 and other keys according to the operating procedure shown in Figure 12 (ω). 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 go to Figure 12+b+ and (C). As shown, open the index plate 13 of the page on which the corresponding disc number is written and operate the index key 15 (shown with diagonal lines in the figure) corresponding to the disc number.
N, then designate the song number using the number key 7, and then operate each key according to the operating procedure shown in FIG. The index switch operates and the contents of the key are automatically changed.

The specified disk (slot) number and song number are R.
It is registered in memory 2 in AM402.

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.
CCESS IND20 lights up and each mechanism starts operating. The operation of each mechanism will be explained below based on chart 70 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 disc is registered in the slot, that is, whether the disc is installed in the slot. If it is not installed, the next designated slot number is read. If it is determined that the carrier assembly 64 is installed, the carrier assembly 64 moves to the designated slot position at 33.
- Start. 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. evacuate. As the carrier assembly 64 moves, DISK IND
16 counts up and stops at the number corresponding to the slot position, and at the same time, ACCESS IND 20 goes out.

When the carrier assembly 64 stops at the specified slot position, it reads out the specified song number of the specified disk from the memory 2, and checks whether the specified song number is registered in the memory 1, that is, the specified song number is outside the number of recorded songs on the specified 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, move the disc stored in the slot to the playing position.
The slider 58 begins to move in order to move. 5TANDBY IND19 as the slider 58 moves
lights up. This 5TAND34-BY IND19 has a turntable of 100 discs.
The light remains on until the disc drive motor 54 rotates and the performance begins.

The operation of a part of the slider will be explained with reference to FIG.
When the carrier 40 stops at the designated disk position,
The pull-out roller 78 and reset roller 79 attached to the slider 58 are in the state shown in FIG. 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 (support guide 43 having an inclined surface 43a provided on the carrier 40). (14th appearance)). The disk conveyed by the slider 58 is set on the support guide 43 of the carrier 40. Thereafter, the slider 58 continues to move further from the disk set position 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 disk clamping operation, which will be described later, is performed.

The slider 58 turns on the disc discrimination position switch 89c with its cam portion 58a during loading of the disc. In response to the ON of this switch 89c, as shown in FIG. It will be done. If there is no disc or if the disc is on the back side, its slot number is written in the memory 1 and the slider 58 changes its direction of movement to return the disc to the storage section 32. At the same time, ERRORIND21 lights up. If normal, the loading operation continues and the disc is set in the playing position.

As shown in FIG. 16, the disc 2' in the performance position is placed on the support guide 4 so that its center is a distance [1] lower than the center of the disc 2 in the storage section 32.
Supported by 3. After the disc is set at the playing position, the above-mentioned surplus stroke S of the slider 58 causes the guide groove 97a of the engaging member 97 provided on the slider 58 and the guide bin 9 fixed to the clamp arm 68
6 engages with each other to rotate the clamp arm 68 in the closing direction. As the clamp arm 68 rotates, the clamper 62
The head of the disc is inserted into the turntable 100 through the center hole of the disc. At the time of insertion, the magnetic body 99 of the clamper head is pulled by the yoke 102 inside the turntable 100, so that the tapered part 62a of the clamper 62 lifts the disk placed on the support guide 43, and the turntable 100 is placed on the disk. The disk is pressure-clamped to the mounting surface 100a. At this time, the center of the disk 2N is higher than the center of the disk 2- on the support guide 43 by a distance jz (j2<j+) (see FIG. 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 turning on the switch 89b, the disk drive motor 54 starts. 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. ;l 17
),! : Ki, ACCESS IND20 lights up, and the information reading device (not shown) including the demodulation circuit etc. sequentially operates the predetermined servo system such as the tracking device, and performs sequential operations to extract the information contents correctly. . At this time, if the disc is not properly installed or the surface of the disc is damaged, the information cannot be read correctly.
memory and return the disk to its original slot. If the information can be read, the pickup 55 accesses the specified song, and when the pickup 55 stops at the specified song position, PROGRAMIND 7, which was counting up at the same time the pickup 55 starts moving, stops counting and displays the song number. .

The pickup 55 moves from the stop position to constant speed running and starts playing. During the performance, 5TAND BY38-IND19. ACCESS IND20 is Ura Tue 11, and PLAY lN018 lights up.

In the playing state (clamped state), as shown in FIG.
overlaps with the outer periphery of disk 2b located at position 2,
Furthermore, the positional relationship is such that it is located within the outer edge of the partition plate 35. Due to this! This has the effect that the depth of the main body 4 can be reduced, and that the number of disc drawers required during loading can be reduced. Further, when the outer periphery of the disc 2a being played is located between the parallel parts 39 of the partition plate 35,
Another advantage is that it is possible to prevent the disc from being erroneously stored in the storage section 32 after the end of the performance.

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. The outer periphery of the disc being played may be positioned between the sections.
Alternatively, as shown in FIG. 18 (a+), the outer periphery of the disc being played may be positioned between the ends of the plate-shaped partition plate.

When the performance of the specified music is completed and all the programmed music is completed, the PLAY fND 18 is turned off 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 and the series of operations ends. When the door 5 is opened to replace the storage device or disk, the door close limiter switch 31M10FF is activated, and in response, the contents of the memory 1 are cleared.

Next, the operation in special cases will be explained. First, during loading of the disc, the disc presence/front/back discrimination sensor 61
If it is determined that the disc is "absent" or the disc is on the "back side", the slot number is stored in the memory 1, and the direction of movement of the slider 58 is reversed to return the disc to the disc storage section 32. Then, the carrier assembly 64 moves to the next designated 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 a designated song, if the designated song number is greater than the number of songs recorded on the disc, that is, if there is no designated song and the song number cannot be detected from the disc, The pickup 55 returns to its home position by actuating the outer big-a-raprimic switch 69b, and its disk (slot) number and designated song number are stored in the memory 1. Then, release the disc clamp and place the disc in storage compartment 3.
After returning it to 2, 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, if the next specified song is recorded on the disc currently being played, the beginning of that song will be displayed. When switching to the next disc, the same operation as when there is no designated song is performed. The same operation is also performed when the AGA IN key 12 is used to command 41- to play again according to the contents registered in the memory.

Although the disk performance device with this configuration can accommodate a variety of disk sizes, it can be made ultra-small compared to conventional jukeboxes by adapting to digital audio disks, which have a particularly small diameter and are called compact disks. It becomes possible. 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. .

As detailed above, according to the present invention, in response to opening the door of the disk storage section or turning on the power, each storage slot of the disk storage section is sequentially scanned, and slot numbers in which no disks are mounted are stored in the memory. Therefore, if a non-installed 42-slot is specified, the non-installation can be confirmed without accessing that slot, and the next specified slot can be accessed immediately, allowing smooth program play. It becomes possible. Furthermore, if a non-implemented slot is specified during programming, it is possible to issue a warning or prohibit the program in advance.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the overall configuration of a disc playing device according to the present invention, Fig. 2 (ω is a plan view of the operating section; crests) is a front view including some parts, and (C> is a side sectional view). , 3rd
Figures (J is a plan view of the main body of the device, (b) is a front view, (C) is a side view, Figure 4 is a schematic perspective view of the disk storage section, Figure 5 (a is a view taken from the six directions of arrows in Figure 4). The figure shown in FIG.
Figure 8 (a) is a plan view of a part of the slider, mountain) is a front view, Figure 9 (al is a plan view including a partial cross section of a part of the clamper, mountain) is a front view including some parts, (C) is a side view, Fig. 10 is a block diagram of the control system, Fig. 11 is a circuit block diagram of the door control section, and Fig. 12 (ω~ (The small figure is a diagram showing the operating procedure when selecting a song, Figure 13 is a flow chart diagram to explain the operation of each mechanism, and Figure 14 is a diagram showing the operation procedure when selecting music.
Figures (ω to (C) are explanatory diagrams of the operation of a part of the slider, and Figure 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 sides. (a) is a plan view, and the peaks) are side views. FIG. 16 is a diagram showing the relationship between the discs in the storage position and the performance position. Figure 17 is a diagram showing the positional relationship of the partition plate, guide plate, and disc in the playing state, Figure 18 (ω and mountain)
19 is a plan view showing another shape of the end of the partition plate on the playing position side, and FIG. 19 is a flowchart showing the scanning operation of the disc storage section. Explanation of symbols of main parts 2...Disc 4...Device body 5
...Door 6...Operation section 22.
...Underbase 26...Door drive motor
132...Disc storage section 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...
... 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 = 45- 100...Turntable applicant Pioneer Co., Ltd. agent Patent attorney Motohiko Fujimura 46- JP-A 1972-IC405G (19) Earth! 7 recesses 32 5a

Claims (1)

[Claims] A disc storage unit capable of arranging and storing a plurality of discs in a predetermined manner, a disc playing means movable in the direction of arrangement of the discs in the disc storage unit, and a positional relationship between the disc and the disc playing unit that allows play. and a detection means for sequentially scanning each storage slot of the disk storage section in response to closing a door of the disk storage section or turning on the power to detect a slot in which no disk is being viewed. and storage means for storing the slot number in response to the output of the detection means.