JPH0452545B2 - - Google Patents

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 joke box is generally known as such a disk playing device. However, the main body of the conventional desk box itself was very large, and it was very troublesome to insert and remove the disk from the disk storage compartment, making it unsuitable for home use and not being used for commercial use. was the majority. In addition, the configuration required a special key to open and close the door when replacing disks, etc., which was very disadvantageous in terms of usability. This was not desirable because it could be opened.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a disk performance device that is extremely compact, allows easy attachment and removal of disks, and allows smooth program performance.

Recently, several types of means have been proposed to greatly increase the amount of information that can be stored by digitally inputting signals to the disk, compared to conventional audio disks that input analog signals. In particular, the method of using a disk, generally called a compact disk, which picks up signals using laser light, has a small diameter of 12 cm, making it easy to handle, and allows the performance device to be made smaller. The disc has a playing time of one hour on one side, which is approximately 1.5 times the amount of information that can be stored on both sides of a conventional audio disc. 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 1.2 mm, 50 discs can store 1,000 songs with a playing time of 3 minutes.
cm thick, and can store up to 1,000 songs. By using a compact disk in this way, it is possible to provide an extremely small-sized joke box that can be used in general households. By using the joke box of this invention, there is no need to prepare a separate disk storage box to store many disks, and it is possible to select and play songs on the disks without touching the disks, so it can be used by women and dwarfs. It will not damage the disk or damage the device.

A disk playing device according to the present invention includes: a disk storage section that can replaceably arrange and store a plurality of disks; a disk playing means that is movable relative to the disk storage section in the disk arrangement direction; A disc playing device, the disc playing device comprising: a control means for positioning the disc storage section and the disc playing means relative to each other in order to bring the disc playing means to a storage position corresponding to a predetermined disc, the disc playing device an unplayable state detecting means for detecting an unplayable state; a storage means for storing storage position information corresponding to the unplayable disk in response to an output of the unplayable state detecting means; and an unplayable disc stored in the storage means. The present invention is characterized by comprising a means for ignoring when a disk corresponding to a disk storage position is specified for performance.

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 the main body of the device that can accommodate a plurality of disks 2 and automatically play the disks, and has a housing structure that allows stacking of other devices of approximately the same size, such as amplifiers and tuners. . A disk insertion port 3 is formed, for example, in the front of the device body 4, and a disk storage portion (described later) is provided near the insertion port 3 so that disks 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 device main body 4, and is separated from the device main body 4 and connected to it by wired or wireless means, for example.

FIG. 2 shows the configuration of the operating section 6, and a
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 has a number from 0 to 9 that specifies the disc number and track number you want to select.
Number key 7 up to, ENT key 8 to register the specified number in memory, ALL key 9 to play sequentially from the first disc or all songs on the specified disc, START to start playing after memory registration is completed. Key 10: Move to the next registered disk or song while a disk or song registered in memory is playing.
It is provided with a NEXT key 11 and an AGAIN key 12 for causing the player to play again according to the contents registered in the memory. Furthermore, a plurality of index plates 13 serve as storage means on which the titles, track titles, etc. of stored discs can be written, the contents can be changed in connection with disc replacement, and the plates 13 can be easily searched. a plurality of index switches 14 provided corresponding to the number of index plates 13 to detect the index plate being searched in conjunction with the number key 7;
Separately, index keys 15 from 1 to 5 are included to specify the disk number. The index plate 13 is involved in the replacement of discs, and allows the disc title, track list, etc. to be easily changed.

In addition, both the device main body 4 and the operation section 6 include a disk IND 16 and a PROGRAM IND 17, which display the specified or playing disk number and track number, respectively, a PLAY IND 18, which indicates that the music is being played, and a PLAY IND 18, which will be described later. STAND BY IND 19 lights up after the carrier assembly has stopped in a predetermined position until it is ready to play, and ACCESS lights up while the carrier assembly and the pickup mentioned below are moving to a predetermined position.
IND 20, and an ERROR IND 21 that lights up when there is no disc at the designated disc number position or when it is detected that the front and back sides have been stored incorrectly during performance.

In the above-described configuration, the operation 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, in which a is a plan view, b is a front view, and c is a side view. In the figure, the outer periphery of the door 5 described above is hidden by means such as painting, and bearings 24a and 24b are provided on the left and right sides of the door 5, respectively, to fit with support pins 23a and 23b fixed to the underbase 22. . Bearing 24a,
For example, a fan-shaped gear 25 is attached to one side 24a of 24b. A motor 26 as a drive source for opening and closing the door 5 and a reduction mechanism 27 are fixed to the underbase 22, and a final stage gear 28 of the reduction mechanism 27 meshes with the sector gear 25. The shaft 29 of the final stage gear 28 has a recess 3 in the peripheral wall.
A cam 30 having a diameter of 0a is fixed, and limiter switches 31a and 31b, which respectively detect the opening limit and closing limit of the door 5 by fitting into the recess 30a, are in contact with the peripheral wall of the cam 30. There is.

The disk storage section 32 for storing a plurality of disks 2 is, as shown in a schematic perspective view in FIG.
A support base 3 fixed to the underbase 22 with a plurality of grooves 33 formed at a constant pitch.
4, and a plurality of partition plates 35 inserted and installed in the groove 33 of the support base 34, the partition plates 35
The structure is such that a plurality of disks are housed vertically side by side in slots formed between the disks. 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 prevents the disk from moving in the front-rear direction. For example, a pair of support members 36 and 37 are integrally provided at the front and rear.
A pair of support members 36 and 37 are provided at the front (disk insertion) to restrict the free movement of the mounted disk and to prevent the disk from falling off due to external disturbances, etc.
The side member 36 is configured to be higher than the rear side member 37, and 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 the disk is moved, and prevents damage to the disk. In order to achieve this, the partition plate 35 has a substantially I-shaped shape having a guide wall 38 as shown in FIG. Further, the partition plate 35 has a tapered or curved shape at the front and rear of the guide wall 38 to facilitate 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 a parallel portion 39 at the tip of the tapered portion 38a on the playing position side, it is possible to perform a performance with the disk 2 positioned between the parallel portions 39 as shown in FIG. 5b. It can be reliably stored in the storage position.

In FIG. 3, the carrier 40 is movably supported by fitting into guide pars 42a and 42b through a round hole 41a and an oblong hole 41b provided through the side surface. The carrier 40 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 a perspective surface 43a so that the disk can be moved smoothly. By making the opposite side also a perspective surface, even if the disk 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 46 in the left-right direction in the figure. The wire 46 is the speed reduction mechanism 45
pulley 47 and underbase 22 coupled to
It is constructed over four pulleys 48a to 48d attached to the carrier 40 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-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 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; Plate 5
A photocoupler 52 is mounted on the carrier 40 so as to sandwich the slit portion of the photocoupler 52.

Mechanical base 53 attached to carrier 40
includes a disk drive motor 24 for rotating the disk, a disk reading information pick-up 55 movably supported on a mechanical base 53, a pick-up drive motor 56 and a speed reduction mechanism 57 for driving this pick-up 55, and a disk storage section. A slider 58 for pulling out the disk stored in the disk drive 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 used to guide the disk taken out from the disk storage section 32 to the performance position, and the presence or absence of a disk attached to either one of these two guide plates is determined, as well as whether the disk is front or back. A carrier assembly 64 includes a disk presence/reverse detection sensor 61, a clamp arm 63 to which a clamper 62 for clamping the disk is attached, and serves as a disk playing means.

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

The two guide plates 60a and 60b are held at a predetermined distance by a stopper pin 70 (shown in FIG. 15) located at the rear end to prevent the disk from deviating rearward.
The ends on the side of the disk storage section 32 are bent outward from each other. As a result, it is possible to absorb misalignment between the disc storage section 32 and the carrier assembly 64, to reliably guide the disc to the performance position, and to prevent the disc from tilting at the performance position. In addition,
In this embodiment, the guide plates 60a, 6
0b is made of a thin plate and the other ends are bent outward, but a thick plate is used and the distance between the ends gradually widens as it approaches the tip. It's okay to be.

In FIG. 3, a disk stopper 71 for preventing the disk from escaping from the storage section 32 is provided at the rear of the disk storage section 32, and a stopper arm is rotatably supported on the underbase 22. It is supported and position regulated by 72. 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. When the carrier assembly 64 is in the rightward limit position, ie, the home position, in FIG.
The disc stopper 71 engages with the cam 73 of
is placed in a blocking position to prevent movement of the disk. On the other hand, when the carrier assembly 64 moves from the home position, as shown in the plan view in FIG. 7a and the side view in FIG. is rotated counterclockwise as shown in the figure, and the disk is retracted from the blocking position to enable movement of the disk.

The disk stopper 71 is connected to the disk storage section 32
When the disk is pushed backward, the above-mentioned blocking position is taken within the limit in which the disk can return to the support members 36, 37 of the storage section 32, and when the disk is on the support members 36, 37. It may be arranged in a positional relationship that makes contact with the disk.
The disk stopper 71 also prevents the disk from slipping out of the storage section 32 by engaging the disk as a stopper member when the disk is installed in the storage section 32, and when the device is not in use, it prevents the disk from being removed due to disturbances such as vibrations. It acts as a restricting member that prevents the disk from moving from the portion 32. Note that the regulating member may be provided separately from the disk stopper 71, and various configurations are conceivable for its configuration.

FIG. 8 shows the structure of the slider section, in which a is a plan view and b is a front view. In the figure, for example, three guide grooves 75a to 75c are formed on the upper surface of the guide base 59, and the slider 58 is guided by engaging with the guide grooves 75a to 75c via guide pins 76a to 76c. It is capable of sliding linearly with respect to the base 59. The slider 58 has arms 77a and 7
A drum-shaped pull-out roller 78 and a reset roller 79 are attached via the roller 7b, and these rollers are provided so as to sandwich the outer periphery of the disk, and are used to move the disk from the disk storage section 32 to the performance position, and conversely from the performance position to the storage section 32. The slider 58 serves as a disk moving member that moves the disk while rolling it.
are provided at a predetermined distance in the sliding direction.

Drive motor 8 for driving slider 58
0 and this motor 80, a belt 81 and a pulley 8
A worm gear 83 coupled via 2 is attached to the guide base 59 via a chassis 84. Main gear 8 meshed with worm gear 83
A drive pulley 86 is coaxially attached to the drive pulley 86, and the wire 8 wound around the pulley 86
7 is a slider 58 via pulleys 88a and 88b provided at both ends of the guide base 59, respectively.
The slider 58 is driven by the driving force of the 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 that detects the position of the disk to determine the presence or absence of the disk and whether it is front or back when the disk is moving. A discrimination position switch 89c is provided.

FIG. 9 shows the structure of the clamper section, in which a is a plan view including a partial cross section, b is a front view including a partial cross section, and c is a side view. In the figure, a cradle 90 provided on the carrier 40 (third illustration)
A clamp arm 63 is rotatably attached to the head with a shaft 91 as a support point, and is biased by a spring 92 in the clockwise direction of the head, that is, in the opening direction. The amount of rotation of the clamp arm 63 is regulated by a pin 93 protruding from the pedestal 90. Clamp arm 63
A guide portion 95 having a magnetic material 94 at its tip and a guide pin 96 for controlling the rotation of the clamp arm 63 in the counterclockwise direction, that is, in the closing direction, are attached to the guide portion 95 . When the guide pin 96 is loaded to the disc playing position, the guide pin 96 is connected to the slider 5 mentioned above.
8 (see FIG. 8), and by moving along the guide groove 97a, the clamp arm 63 is moved in the closing direction against the spring 92. Rotate. The approximately truncated conical clamper 62 is provided with 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 clamp arm 63 are made of non-magnetic material.

Mechanical base 53 on the side facing the clamper 62
includes a drive motor 5 for driving the disk 2.
4 is attached, and a turntable 100 as a disk drive means is fixed to the rotating shaft of the turntable 100 so as to be rotatable. Turntable 1
00 has a ring-shaped magnet 101 and a yoke 102 built therein.

In the clamper section having such a configuration, when the disc is loaded to the performance position, the guide groove 97a of the engaging member 97 provided on the slider 58
The clamp arm 63 is rotated in the closing direction by engagement with the guide pin 96 of the clamp arm 63. As the clamp arm 63 rotates, the head of the clamper 62 passes through the center hole of the disk 3 and is inserted into the turntable 100. When inserted, the magnetic body 99 on the clamper head touches the turntable 100.
The tapered part of the clamper 62 forms a magnetic circuit with the magnet 101 and the yoke 102 inside and is pulled by the yoke 102.
Lift up the disc 2 placed on the support guide 43 (see FIG. 3c) of the turntable 10.
The disk 2 is pressure-clamped to the mounting surface 100a of 0. Further, the clamp arm 63 rotates, and the engaged guide portion 95 is separated from the clamper 62 by the attractive force between the magnetic body 94 and the magnet 98. Now, the clamping force is applied to the yoke 1 by the magnetic body 99.
The force pulled by the magnet 98 at the bottom of the clamper is doubled by the force pulled by the magnetic body 94. In the above state, the clamper 62, the disk 2, and the turntable 100 are not in contact with other members, and the disk 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 song number to be selected, as explained in FIG. 2. 601 and a display section 602 that displays the disk number, track number, or operating mode of the aircraft. A control unit composed of a CPU 603, 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 601 and display unit 602 via an input/output interface 606 and an output interface 607. Connected.

Operation switch group 601 consisting of a large number of switches
is configured in the form of a key matrix, and input of operation keys is performed through a key scanning operation via an input/output interface 606 using fewer connection lines. Any switch in the operation switch group 601 that is operated is read by the key scan, and its contents are displayed on the display section 602 and sequentially stored in the RAM.
605.

The device main body 4 includes a CPU 40 similar to the operation section 6.
1. A control section composed of a RAM 402 and a ROM 403, an input interface 404, an output interface 405, a drive circuit 406, a driven section 407, and an input signal source 408 are provided.

The driven section 407 includes a carrier drive motor 44 that drives the carrier to a designated disk position, a slider drive motor 80 that loads the disk from the storage position to the performance position, and a pick-up for reading disk information that moves in the disk radial direction. It consists of a pick-up drive motor 56 and various display elements.

The input signal source 408 includes a carrier position sensor 50 composed of optical means for detecting the carrier movement position, and a carrier limit SW 49 provided to prevent the carrier from deviating from a predetermined movement section.
a, b, slider limiter SW89a that detects whether the disc is in the storage position or the playing position;
b. Disk presence/front/back detection sensor 6 that detects the presence/absence of a designated disk and the front/back sides during loading.
1. The disk discrimination position SW89c indicates the operating position of this sensor 61, the pick-up limiter switches 69a and 69b detect the innermost and outermost circumferential positions of the pick-up, and the disk drive motor 54 indicates that it has reached a predetermined rotation speed. A disk motor speed sensor 1 detects the stoppage of the motor, a disk motor speed sensor 2 detects the stop of the motor, and a signal indicating the innermost recording circumference, the outermost circumference of recording, or a recorded song from a control signal detected from the disk through a predetermined demodulation circuit. It consists of an information detection section that detects information such as number.

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.
Let (0,1) be the forward direction and (1,0) be the reverse direction.
In addition, in order to be able to change the speed as needed, the input source is 3-bit information, which is the above-mentioned control plus 1 bit indicating high speed or low speed.
(0,0,0) is stopped, (0,0,1) is forward,
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. Furthermore, it is also possible to use a plurality of output bit D/A converters as speed control means.

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

The device main body 4 drives the mechanism to a mechanical initial position (disk drive motor stop, slider release, carrier home position, etc.) when the power is turned on, and after returning to the initial position, the bidirectional data transmission system 4
60 to request the operation unit 6 to transmit the first disk number. The operation section 6 is used to press the START key 10 (second
(shown), the first disk 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 the operating section 6 displays a display indicating that ACCESS is in progress (data for displaying ACCESS is sent from the main body 4 to the operating section 6 via the bidirectional data transmission system 460).

When the carrier 40 reaches the specified position and stops,
The slider drive motor 80 is driven, and the corresponding disc is loaded into the performance position. At this time, when the disk discrimination position switch 89c provided in the middle of the loading mechanism is operated, the signal from the disk 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,
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.

After the disk loaded at the performance position is properly clamped by the clamper 62, the disk drive motor 54 starts and when it is detected that the predetermined rotation speed has been reached, the main body 4 requests the operating section 6 for the specified song number. do. A comparison is made between the specified song number and 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 pick up 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 pick-up 55 arrives at a predetermined song number position, the pick-up 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 disk to be played next is different from the disk currently being played, the above-described process is reversed, the disk is moved to a new disk position, and the disk is loaded and played in the same manner as described above. 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 installed on the front of the main body 4 consists of resistors R ₁₁₁ , R ₁₁₂ and a capacitor.
A pulse signal is generated by a differentiating circuit composed of C ₁₁₁ and C ₁₁₂ and inputted to an AND gate 110 together with a carrier limiter switch 49a that detects the home position of the carrier 40. The output of AND gate 110 becomes the clock input of T-type flip-flop 111. T-type flip-flop 111
The two outputs Q, are input to the door open limiter switch 31a, the door close limiter switch 31b, and the AND gates 113 and 114, respectively, and the outputs of the AND gates 113 and 114 are sent as forward and reverse rotation signals via the drive circuit 112. Door drive motor 2
Rotate 6. A power reset signal is applied to the reset terminal of the T-type flip-flop 111.

In such a control section, when the power is turned on, a reset signal is activated regardless of the operation of the door switch 1 or the carrier position, and the T-type flip-flop 11 is activated.
1 is set to Q=L and =H, so the closing limiter switch 31b is driven in reverse until it reaches the L level (closed state) and the door 5 is closed. 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).
The type flip-flop 111 is reversed, rotated forward until the open limiter switch 31a is at the L level (closed state), opens the door 1, and then switches the close limiter switch 3
The door 1 is closed by reversing the rotation until the signal 1b reaches the L level (closed state).

This door control unit is configured such that the door 5 can be opened only when the carrier 40 carrying the performance system is in the home position, thereby preventing a new disc from being erroneously stored in the storage position of the disc being played. We will do our best to prevent such problems from occurring.

Next, the operation of the disk playing apparatus having the above-described structure is performed by the CPU 401 executing a subroutine shown in the flowchart of FIG. 19, and this will be explained.

First, regarding storage of disks,
When you press the door switch 1 provided on the front of the door 5, the door 5 automatically opens to reveal the disk storage section 32 provided immediately behind the door 5.
All you have to do is insert the disk 2 into any slot formed by the . At this time, the disc stopper 71 is in a predetermined blocking position due to engagement with the gum 73 of the carrier 40 in the home position (see Fig. 6), so that the stored disc can be securely placed in the storage area without slipping backward. 32. The index section 13a of the corresponding index plate 13 provided on the operation section 6 at the same time as the disk is stored.
By recording the disc title name and the track list in the MEMO section 13b, the title, track list, etc. of the stored disc can be easily searched. After storing the disk, press door switch 1 again.
When is pressed, the door 5 is automatically closed and the door close limiter switch 31b is closed. In response to the output indicating that the door close limiter switch 31b is closed again, that is, the disk storage completion detection signal, the carrier assembly 64 sequentially scans each storage slot of the disk storage section 32 to determine the presence or absence of a disk in all slots. Start moving (steps S40, S41). At this time, the disk stopper 7 prevents the stored disk from rolling backwards.
1, as the carrier assembly 64 moves, the cam 73 protruding from the carrier 40 gradually disengages from the cam pin 74 fixed to the stopper arm 72 that supports the disk stopper 71, and due to its own weight, the cam 73 in FIG. From this state, rotate counterclockwise and retreat to a position where there is no problem in pulling out the stored disk (see Figure 7).

Disk storage section 32, each storage slot position (disk storage position), and carrier position detection sensor 50
The carrier position detection sensor 5 corresponds to each slit of the slit plate 51 constituting the
Based on the output of 0, the carrier assembly 64 sequentially stops at each storage slot position (step
S43). After the carrier assembly 64 has stopped,
The slider 58 for loading (transporting) the storage disk starts moving. When the carrier 40 stops at the storage slot position, the slider 5
The pull-out roller 78 and reset roller 79 attached to 8 are in the state shown in FIG. 14a, and in this state, the slider drive motor 80 is started and moves the slider 58 backward (in the direction of the arrow in FIG. 14). let As a result, the pull-out roller 78 comes into contact with the outer periphery of the disk and moves the disk to the slider 5.
Loading as 8 moves (step
S44).

The slider 58 turns on the disk discrimination position switch 89c with its cam portion 58a during loading of the disk. This switch 89c is ON
In response, as shown in FIGS. 15a and 15b, the disk presence/absence/front/back discrimination sensor 61 provided on the guide plate 60a is activated to determine the presence or absence of a disk (step S45). If there is no disk, the slot number, that is, the disk storage position information is stored in the memory 1 in the RAM 402 (shown in FIG. 10) based on the output of the carrier position detection sensor 50 (step S47). After the determination of the presence or absence of a disk is completed, the slider 58 changes its direction of movement in order to return the disk to the storage section 32. When the return of the disk is completed, the carrier assembly 64 moves to the adjacent storage slot position, determines the presence or absence of the disk by the same operation as described above, and thereafter sequentially scans the disk by the same operation until the final slot (step S48, S49). When the scanning is completed, the carrier assembly 64 returns to the home position and becomes ready for music selection. Note that it is also possible to adopt a configuration in which such scanning shown in FIG. 19 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 disk (slot) number and the song number, and the other is to open and close a plurality of index plates 13 and select the desired disk using the index key 15. (The number key 7 is used to specify the song).

If you want to use the former selection method to specify and register, for example, the 5th track on the 3rd disc and the 10th track on the 23rd disc among the storage discs, press the number key 7 and other keys according to the operating procedure shown in Figure 12a. 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 Figure 12 b and c. Open the page index plate 13, operate the index key 15 (indicated by diagonal lines in the figure) corresponding to the disc number, and then specify the track number using the number key 7.
Thereafter, each key is operated according to the operating procedure shown in FIG. 12d. Note that by opening and closing the index plate 13, an index switch linked thereto 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.

When the specified registration of the disc number and track number using one of the above song selection methods is complete, press the START key 1.
When 0 is pressed, ACCESS IND20 lights up and each mechanism starts operating. The operation of each mechanism will be explained below based on the flowchart shown in FIG.

The first slot (disk) designated and registered in response to the start command from the START key 10
Read the number from memory 2 (step
In step S1), it is determined whether or not this slot number is registered in the memory 1, that is, whether or not a disk is installed in that slot (step S2). If it is not installed, the next designated slot number will be read (step
S13). If it is determined that the slot is installed, the carrier assembly 64 starts moving to the designated slot position (step S3). At this time, the disk stopper 71 rotates counterclockwise from the state shown in FIG. 6b in the same way as when scanning the disk storage section 32, and retreats to a position where there is no problem in pulling out the stored disk to the playing position. do. As the carrier assembly 64 moves, the DISK IND 16 counts up and stops at the number corresponding to the slot position, and at the same time the ACCESS IND 20 turns off.

After the carrier assembly 64 stops at the designated slot position, the designated track number of the designated disk is read out from the memory 2, and it is determined whether the designated track number is registered in the memory 1 or not, that is, the designated track number is outside the number of songs recorded on the designated disk. It is determined whether or not (step S6) (registration of the song number in the memory 1 will be described later). If it is registered, the next designated slot number is read out (step S14). 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 (step S7). STAND as the slider 58 moves
BY IND19 lights up. This STAND BY
The IND 19 remains lit until the disc is mounted on the turntable 100 and the disc drive motor 54 rotates to start playing.

The operation of the slider section will be explained with reference to FIG. 14. 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. 14a. be. In this state, the slider drive motor 80 is started and moves the slider 58 backward (in the direction of the arrow in the figure). As a result, the pull-out roller 78 moves the disk in contact with the outer periphery of the disk to the engagement position with the clamper 62, that is, the performance position (the support guide 43 having the inclined surface 43a provided on the carrier 40) as the slider 58 moves. (Figure 14b). 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. 14c, thereby providing an extra stroke S between it and the outer circumference of the disk. During this surplus stroke S, a disk clamping operation, which will be described later, is performed (step S10).

The slider 58 uses its cam portion 58a to switch the disk discrimination position switch 8 during loading of the disk.
Turn on 9c. In response to the ON of the switch 89c, the disk presence/absence/front/back discrimination sensor 61 provided on the guide plate 60a is activated as shown in FIGS. S8, S9). If there is no disk or if the disk is on the back side, its slot number is written in memory 1 (step S12), and the slider 58 changes the direction of movement to return the disk to the storage section 32 (step S13). . Simultaneous ERROR IND21 lights up. If normal, the loading operation continues and the disc is set in the playing position.

The disk 2' in the performance position is supported by the support guide 43 so that its center is a distance t ₁ lower than the center of the disk 2 in the storage section 32, as shown in FIG. After the disc is set at the performance position, the guide groove 97a of the engaging member 97 provided on the slider 58 engages with the guide pin 96 fixed to the clamp arm 68 due to the aforementioned extra stroke S of the slider 58. The clamp arm 68 is rotated in the closing direction. As the clamp arm 68 rotates, the head of the clamper 62 passes through the disk center hole and is attached to the turntable 100.
inserted into. When inserted, the magnetic body 99 of the clamper head touches the yoke 102 inside the turntable 100.
, the tapered portion 62a of the clamper 62 lifts up the disk placed on the support guide 43, and lifts up the disk placed on the support guide 43, thereby lifting the disk onto the placement surface 1 of the turntable 100.
Clamp the disk to 00a. At this time, the center of the disk 2'' is higher than the center of the disk 2' on the support guide 43 by a distance t ₂ (t ₂ <t ₁ ) (see FIG. 16).

When the disk is completely installed on the turntable 100, the slider limiter switch 89b is turned on.
Turns on and detects clamp completion. (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 starts (step
S11). 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 (step S17). At this time, the ACCESS IND 20 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.
Sequential operations are performed in order to extract information contents correctly. At this time, if the disc is not properly installed,
If the surface of the disk is damaged, information cannot be read correctly. Therefore, if this is detected (step S18), the reader determines that the disc is incomplete and cannot be played, stores the slot number in memory 1 (step S16), and returns the disc to its original slot. (Step S13,
S15). If it is possible to read the information, access the pick-up 55 to the specified song and use the pick-up 55.
When stopped at the specified song position, the count up started at the same time as the pick-up 55 started moving.
PROGRAM IND7 stops counting and displays the track number. The pick-up 55 moves from the stop position to constant speed running and starts playing (step
S21). During the performance, STAND BY IND19,
ACCESS IND20 goes out, PLAY IND18
lights up.

In the playing state (clamped state), as shown in FIG. The positional relationship is This has the effect that the depth of the main body 4 of the apparatus can be reduced, and that the amount of the disk to be pulled out during loading can be reduced. Further, when the outer periphery of the disc 2a during performance is located between the parallel parts 39 of the partition plate 35, 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. The outer periphery of the inner disk may be positioned, or the outer periphery of the disk being played may be positioned between the ends of this plate-shaped partition plate, as shown in FIG. 18a.

When the performance of the specified song and all the programmed songs are completed (steps S22, S23,
S24, S25, S28), the PLAY IND 18 goes out and the pick-up 55 returns to its home position. The disk is then unclamped (step
S26), and the disk is returned to the disk storage unit 32 (step S27). The carrier assembly 64 then returns to the home position and the series of operations ends (step S29). When the door 5 is opened to replace the storage disk, the door close limiter switch 31b is turned off, and in response, the contents of the memory 1 are cleared (steps S30, S31).

Next, the operation in special cases will be explained. First, during disk loading, if the disk presence/front/back discrimination sensor 61 determines that the disk is "absent" or the disk is "back", the slot number is stored in the memory 1, and the moving direction of the slider 58 is is reversed to return the disk to the disk storage section 32, and 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 pick-up 55 starts moving and searches for a specified song, if the specified song number is greater than the number of songs recorded on the disk, that is, if there is no specified song and the song number cannot be detected from the disk. The pick-up 55 returns to the home position by the operation of the pick-up limiter switch 69b on the outer periphery, and the disk (slot)
The number and designated song number are stored in 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 disk or song is commanded by operating the NEXT key 11 during a performance, if the next specified song is recorded on the disk that is currently being played, the beginning of that song will be displayed. The pickup 55 moves, and when switching to the next disk, 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 disk performance position of this configuration can accommodate various disk sizes, it is particularly suitable for digital audio disks with small diameters, so-called compact disks, making them ultra-small compared to conventional joke boxes. 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 pick-up 55 is provided above the disc storage section 32.
Further, although the disk is moved to bring the positional relationship between the disk and the disk playing means to a position where play is possible, it is also possible to move the disk playing means to the disk storage section. .

As described above in detail, the disc playing device according to the present invention is a disc playing device that selectively plays a plurality of discs that are exchangeably stored in a disc storage section, and detects a state in which a disc cannot be played. a means for detecting a non-reproducible state;
storage means for storing storage position information corresponding to the non-playable disk in response to the output of the non-playable state detecting means, further comprising a storage means for storing storage position information of the non-playable disk stored in the storage means; It also has a means to ignore when a performance is specified.

Because of this configuration, once it takes time to access the storage location of a disk in a state where playback is not possible,
After that, there is no need to access the program, allowing smooth program performance.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall structure of the disc playing device according to the present invention, FIG.
Figure 3a is a plan view of the main body of the device, b is a front view, c is a side view, and Figure 4 is a schematic perspective view of the disk storage section.
Fig. 5 a is a view seen from the direction of arrow A in Fig. 4, b is a view in the playing state seen from the direction of arrow B in Fig. 4, and Figs. 6 and 7 are explanatory diagrams of the operation of the disk stopper. Yes, a is a plan view, b is a side view, 8th
Figure a is a plan view of the slider section, b is a front view,
Figure a is a plan view including a partial cross section of the clamper part, b
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 a circuit block diagram of the door control section, and Figs. 12 a to d show the operating procedure when selecting music. Figure 13 is a flowchart for explaining the operation of each mechanism, Figures 14 a to c are explanatory diagrams of the operation of the slider section, and Figure 15 is the position between each member when determining whether or not there is a disk and whether it is front or back. 16 is a diagram showing the relationship, a is a plan view, b is a side view,
The figure shows the relationship between the discs in the storage position and the performance position. Figure 17 shows the positional relationship between the partition plate, guide plate and the disc in the performance state. Figures 18a and b show the relationship between the partition plate and the performance position side. FIG. 19 is a plan view showing another shape, and a flowchart showing the scanning operation of the disk storage section. Explanation of symbols of main parts, 2...disk, 4...
...Device body, 5...Door, 6...Operation unit, 22...
...Underbase, 26...Door drive motor,
32... Disk 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... Slider, 60a, 60b... Guide plate, 61... Disk 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 pin, 97 ... Engagement member, 9
8,101...Magnet, 100...Turntable.

Claims (1)

[Claims] 1. A disk storage section capable of storing a plurality of disks in a replaceable arrangement; a disk playing means movable relative to the disk storage section in the disk arrangement direction; A disc playing device comprising: a control means for positioning the disc storage section and the disc playing means relative to each other in order to bring the disc playing means to a storage position; a state detecting means, a storage means for storing storage position information corresponding to the non-playable disk in response to an output of the non-playable state detecting means, and a storage position corresponding to the storage position of the non-playable disk stored in the storage means. A disc playing device characterized by comprising: means for ignoring when a disc is designated for performance.