JPH07220364A - Disk reproducer - Google Patents

Abstract

PURPOSE:To prevent a disk from getting out of a tray and dropping into the main body of a disk reproducer by performing the control to set an optical mechanism at an up-position to reproduce the disk when the tray is set at an ejecting position for exchange of the disk. CONSTITUTION:A tray 20 takes out or store the desired one of carriages 51-57 out of or into a stocker 50 and then transfers this carriage to a reproducing position. The tray 20 also emerges through an opening 502 at an ejecting position outside a disk reproducer for exchange of disks. An optical mechanism 200 containing an optical head 203, a spindle motor 327, etc., moves up and clamps a disk on a turntable 202 when the carriage is kept at the reproducing position. The mechanism 200 is kept at a lower part while the tray 20 is transferring the carriage. Meanwhile the mechanism 200 moves up when the tray 20 is kept at the ejecting position. Thus it is possible to prevent the disk under exchange from falling into the body of the disk reproducer even if the disk gets out of the tray 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk reproducing apparatus for reproducing a disk such as a compact disk, and more particularly, a tray on which a disk can be mounted is horizontally placed from an eject position for mounting or dismounting the disk to a reproducing position in the apparatus body. The present invention relates to a front-loading type disc reproducing apparatus for reproducing a disc on the tray by moving the disc to the up position for reproducing the disc by moving the disc to the up position for reproducing the disc.

[0002]

2. Description of the Related Art In a disk reproducing apparatus for reproducing a disk such as a compact disk, many front loading methods have been adopted in which a tray is horizontally moved from an eject position to a reproducing position to load the disk.

[0003]

The tray is provided with a disc mounting recess for positioning the disc. However, when the disc is thrown onto the tray toward the rear of the apparatus, the disc is mounted on the tray. There was a problem of getting over the concave portion, entering between the tray and the opening of the front panel of the apparatus, and dropping into the apparatus.

[0004]

DISCLOSURE OF THE INVENTION The device of the present invention is to provide a disc reproducing device which solves the above-mentioned problems, in which tray means capable of mounting a disc is ejected from the eject position for attaching and detaching the disc into the main body of the device. , The disc is loaded horizontally, the disc is loaded, the disc reproducing means is moved to the up position for reproducing the disc, and the disc on the tray means is reproduced.
This is achieved by providing control means for controlling the position of the disc reproducing means so that the disc reproducing means is brought to the up position when the tray means is at the eject position in the dating system disc reproducing apparatus. .

[0005]

According to the above-described apparatus of the present invention, the control means controls the position of the disc reproducing means so that the disc reproducing means is brought to the up position when the tray means is at the eject position. Is prevented from falling into the main body of the apparatus through the gap between the tray means and the opening of the front panel of the apparatus.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the device of the present invention will be described below with reference to the drawings. For the detailed drive mechanism of the apparatus of this embodiment, refer to Japanese Patent Application No. 5-71178, “Disc Playback Apparatus” filed on Mar. 5, 1993, filed by the present applicant.

As shown in FIG. 1, a stocker 50 for supporting the seven carriages 51 to 57 in a removable manner is arranged at the rear of the apparatus. As shown in FIG. 2, the stocker 50 is guided in the vertical direction of the apparatus by a left side chassis 12 and a right side chassis (not shown) which are arranged on opposite sides of the stocker 50, and is provided with a cam groove 521. A position POS in which the first carriage 51 stored at the bottom is aligned in the height direction with the reproduction position (center position) shown in FIG. 3 by the movement of the plate 520 in the front-back direction of the apparatus.
The 7th carriage 57 housed at the top moves up and down between 7 positions from the position (1) to the position POS (7) where the carriage 57 is aligned with the reproducing position in the height direction. A plate 582 is connected to the upper end of the stocker, and the plate 582 reinforces the upper part of the stocker and limits the upward rotation angle of the front end of the carriage housed in the stocker.

On the other hand, each carriage has a diameter of 12
The first disc mounting recess 162 for positioning the cm compact disc is formed, and three carriages 55 to 57 accommodated above the stocker are provided with an aluminum plate on the lower surface thereof as shown in FIG. 2nd for positioning a compact disc affixed and 8 cm in diameter
The disk mounting recess 166 is formed. As shown in FIG. 2, in a state where all the carriages are stored in the stocker, the carriages are stacked and supported in the stocker without a gap between them, and the spring 59 attached to the right side surface of the stocker and the right side of the carriage. It is held in the stocker by engagement with a V-shaped notch 169 (FIG. 9) formed on the surface. Also, each carriage is shown in FIG.
As shown in FIG. 6, when the one carriage is pulled out, the projecting portion 170 (FIG. 9) formed on the rear surface of the carriage penetrates the slit 500 formed on the rear plate of the stocker so that the rear end does not drop. There is.

The carriage aligned with the reproducing position (the first carriage 51 in the drawings) is moved from the store position (FIG. 1) stored in the stocker 50 toward the front of the apparatus by the shuttle 28 as shown in FIGS. 2 and 5. Driven, Figure 6
The tray 20 is completely stored in the position shown in FIG. The tray 20 is guided in the front-rear direction of the apparatus by the above-mentioned left and right side chassis, and when the carriage is moved slightly toward the front of the apparatus, it is connected to a tray / carriage moving mechanism (not shown) and holds the carriage on its lower surface. From the close position (FIG. 6) housed in the apparatus, it penetrates through the opening 502 formed in the front panel and is brought to the eject position (FIG. 7) for attaching and detaching the disk.

A control plate 43 is guided inside the slide plate 520 in the longitudinal direction of the apparatus. The control plate 43 moves from the position shown in FIG. 2 to the position shown in FIG. 5 in conjunction with the movement of the carriage from the store position (FIG. 1) to the reproduction position (FIG. 3). By this movement, the lifter pin 36 protruding to the left side surface of the control plate 43 engages with the wedge portion 167R (FIG. 9) of the carriage 52 in the stocker adjacent to the upper surface of the carriage 51 aligned with the reproduction position, and the carriage 52 Lift the front right side of ~ 57.

On the other hand, as shown in FIG.
The interlocking member 58 shown in FIG. 6 is rotatably supported about shafts 580L and 580R, and the right side surface 581R of the interlocking member 58 is shown.
The groove 582 formed in the groove is formed in the bent portion 43 of the control plate 43.
It is fitted with 0. Therefore, the interlocking member 58 is controlled by the control plate.
The lifter portion 583 formed on the left side surface 581L of the carriage 43 rotates counterclockwise in association with the movement of the carriage 43 toward the rear of the apparatus, and the wedge portion 167L ( 9) and lift the front left side of the carriages 52-57. Therefore, when the carriage 51 aligned with the reproducing position moves from the store position to the reproducing position, the front ends of the carriages 52 to 57 in the stocker positioned above the carriage 51 are lifted, and the reproducing disc 1 and the upper surface thereof are covered. -The gap with the disc 2 in the wrapped stocker is widened. This state is maintained even in the eject state in which the carriage 51 is housed in the tray 20 and brought to the eject position shown in FIG.

The interlocking member 58 is rotated clockwise in the stopped state shown in FIG. 1, and when the stocker 50 is brought to the position POS (1), the engaging portions 584L and 584R are moved. Engages with the upper surface of the 7th carriage 57 at the top of the stocker to prevent rotation (fluttering of the carriage) on the front end side of the carriage in the stocker due to vibration or the like.

On the other hand, a top cover 30 is fixed on the left and right side chassis. The top cover 30 turns the disc brought to the reproducing position on its front tongue.
Magnet clamper 19 for fixing on the bull 202
0 is movably supported, and an upper disk lock shaft 250 penetrating a disk spindle hole 163 in the stocker 50 is formed on the lower surface. In the stopped state shown in FIG. 1, the upper disc lock shaft 250 substantially extends to a position where it penetrates the disc spindle hole on the third carriage 53, and the small-diameter disc 4 placed on the carriages 55 to 57 due to vibration or the like. .About.7 are prevented from moving to the disc mounting recess 162 for the large-diameter disc.

On the other hand, a lower disc lock shaft 251 is vertically movable at a position facing the upper disc lock shaft 250. The lower disc lock shaft 251 is guided by a support base 252 and is urged toward the upper side of the device by a spring 253 (FIG. 7) housed therein. A control arm 254 is provided on the support base 252 for the shaft 2
55 is pivotally supported, and its tip Y-shaped portion 257 has a pin 2 formed on the outer peripheral surface of the lower disk lock shaft 251.
The pin portion 256 which is engaged with 58 and is formed at the other end is fitted into the cam groove 101 of the rotary cam 110.

On the other hand, below the carriage brought to the reproducing position, an optical head 203 and a spindle motor 327 are provided.
An optical mechanism 200 on which the above components are mounted is rotatably arranged on a main chassis (not shown). Optical mechanism 200
Is attached to a damper base 180 (FIG. 7) via four dampers 205 (FIG. 1) arranged on the left and right sides thereof, and the damper base 180 is attached to the main chassis by a shaft 204. A pin (not shown), which is pivotally supported and is attached to the rear surface of the pin, is fitted in the above-described cam groove 101.

Below, the positions of the optical mechanism 200 and the lower disk lock shaft 251 which are interlocked with the rotation of the cam 110 are shown in FIG.
~ It demonstrates, referring to FIG. When the cam 110 is at the angular position in the up range of 0 degree or more, the optical mechanism 200 moves the disk brought to the reproducing position to the up position where it is clamped on the turntable 202, as shown in FIG. Then, the lower disc lock shaft 251 is brought to the lock position where it is fitted with the upper disc lock shaft 250. The angle of the cam 110 is detected by the switch cam 260 formed on the lower part of the cam 110 and the switches 312 to 314 arranged on the main chassis, and when the cam 110 is in the up range angle as shown in FIG. , The switches 312 to 314 are all turned on, and the POS1 to POS3 signals formed based on these switches are all in the “L” state.

When the cam 110 rotates clockwise and exceeds the 0 degree position, the switch 312 is turned off and the POS2 signal changes to "H". The optical mechanism 200 and the lower disk lock shaft 251 start descending, and when the cam 110 rotates to the -90 degree position, as shown in FIG. They are brought to the lock position respectively. When the cam 110 exceeds the -90 degree position, the switch 313 turns off, and P
The OS2 signal changes to "H". After that, the cam 110-
While in the down range up to the 135 degree position, the optical mechanism 20
0 is kept in the down position, and the lower disc lock shaft 251 is kept in the unlock position.

When the cam 110 exceeds the -135 degree position,
The switch 312 is turned on, and the POS1 signal changes to "L". The lower disc lock shaft 251 starts to move up and is brought to the lock position when the cam 110 rotates to the -180 degree position. When the cam 110 exceeds the -180 degree position, the switch 312 is turned on and the POS1 signal changes to "L". After that, the optical mechanism 200 is kept in the down position and the lower disc lock shaft 251 is kept in the lock position while the cam 110 is in the lock range of -180 degrees or more.

FIG. 15 is a block diagram showing the control circuit of the apparatus of this embodiment. System controller 300 (hereinafter,
The system controller 300 is abbreviated as ROM, RAM, interface circuit, etc., and is composed of one or a plurality of microprocessors.
It operates based on the flow chart of 8. The system controller 300 should not clear the memory information such as FLAG indicating the stocker position and the presence / absence of the disk when the power is turned off.
The backup power source 302 is connected.

The syscon 300 controls the positions of the carriage and the tray 20 aligned with the reproduction position, the bar STORE signal formed by the limit SW 303 indicating that the carriage has been brought to the store position (FIG. 1), the tray signal. 20 formed by the limit SW 304 indicating that the 20 has been brought to the close position (FIG. 6). CL
The OSE signal, the bar EJECT signal formed by the limit SW 305 indicating that the tray 20 has been brought to the eject position (FIG. 7), the carriage reproduction position (FIG. 3) and the tray 20 reverse position (FIG. 8). ), The bar CENTER signal formed by the photo interrupter 306 indicating that the signal has been brought in is input, and the FRONT signal and the REAR signal are output to the motor drive circuit 307. The tray motor 308 is reversibly rotated by the output of the motor drive circuit 307 to drive the tray / carriage moving mechanism 309. According to the apparatus of this embodiment, the tray 20 (or the carriage aligned with the reproduction position) moves toward the front of the apparatus when the FRONT signal becomes "H", and moves toward the rear of the apparatus when the REAR signal becomes "H". To do. Further, the motor drive circuit 307 shorts out the output when both signals become "H", the electromagnetic brake is applied to the tray motor 308, and the output becomes when both signals become "L". Put in an open state.

In addition, the syscon 300 controls the position of the stocker 50 by a bar D.D. formed by a photo interrupter 310. CNT signal, a bar H.264 formed by a switch 311 for detecting the reference position of the stocker 50. POS
In order to control the rotation angle of the cam 110, the signals POS1 to POS3 formed by the switches 312 to 313 are input to the motor drive circuit 31.
5 for controlling the output of ST. UP signal and ST. Output the DWN signal.

FIG. 16 shows a bar D.D. corresponding to the position of the stocker 50. CNT signal and H.H. The change in the state of the POS signal is shown. As shown in FIG. The CNT signal changes to "L" for a predetermined period each time the stocker 50 passes through each position, and the bar H.H. As for the POS signal, the stocker 50 is at the position POS.
It becomes "L" when it is below the substantially intermediate position between (2) and the position POS (1). Therefore, the ciscon 300 is a H.H. P
When the OS signal is at "L", the D.D. When the CNT signal changes to "L", the reference position POS (1) of the stocker 50 is detected, and thereafter, the bar D.D. Remaining stocker position POS by counting "L" change of CNT signal
(2) to POS (7) are detected.

The stocker motor 316 is a motor drive circuit 3
The output of 15 causes reversible rotation, and drives one of the slide plate 520 and the cam 110 via the switching mechanism 317. The switching mechanism 317 is switched by the tray / carriage moving mechanism 309 in response to the carriage position. When the carriage is in the store position, the motor 316
Rotation is connected to the slide plate 520, and ST. When the UP signal becomes "H", the stocker 50 rises, and ST. DWN
When the signal becomes "H", it falls. The motor drive circuit 315 outputs its output when both signals become "H".
Then, the stocker motor 316 is electromagnetically braked, and when both signals become "L", its output is opened. Further, when the carriage is between the reproduction position and the eject position, the rotation of the motor 316 is connected to the cam 110, and ST. When the UP signal becomes "H", the rotary cam 110 rotates clockwise, and ST. When the DWN signal becomes "H", it rotates counterclockwise.

Further, the syscon 300 is a bar D.D. formed by a disc sensor 328 for detecting the presence or absence of a disc on the carriage brought to the reproducing position. The DET signal is input. In addition, the syscon 300 is a signal processing circuit 3
20 and the servo signal processing circuit 321 to control the disk reproduction and stop. The optical head 203 reads the recorded information on the disc by laser light, and the read signal (RF signal) is supplied to the signal processing circuit 320 via the RF amplifier 322, and EFM demodulation, deinterleave, error correction, etc. , The audio data of Lch and Rch
Converted to data. These audio data are converted and output to L and R analog audio signals via D / A converters 323 and 324 and LPFs 325 and 326, respectively.

The operation of the apparatus of this embodiment described above will be described below with reference to FIG.
7 to FIG. 28 and FIGS. 29 to 3
This will be described with reference to the timing chart shown in FIG. Incidentally, "n" in the flow chart indicates the carriage number selected by the operation of the disk selection key.
"M" indicates the stocker position and is set in response to the stocker position. FLAG (n) is a flag indicating the presence / absence of a disc on the nth carriage, and "1" indicates the presence of the disc. Note that, as shown in FIGS. 36 to 38, the syscon 300 displays the value of “n” on the display 329.
Display in the disk number segment located at the upper left of
Based on FLAG (1) to FLAG (7), the presence or absence of a disc on each carriage is displayed by the disc calendars 1 to 7 arranged below the display 329. In addition,
To simplify the description, the description of the steps necessary for these displays and the description thereof are omitted.

When the power is turned on, the syscon 300 sets the apparatus to the stopped state shown in FIG. 1 based on the initialization flow shown in FIG. That is, Syscon 300
Checks the position of the cam 110 based on the POS1 to POS3 signals in step S200, and if not in the down range (FIG. 14), brings the cam to the down range in step S201. Then, the system controller 300 checks the bar STORE signal in step S202,
If it is "L", the REAR signal is changed in a pulse shape at a cycle of 10 ms and 40% duty for 100 ms in step S203, and the carriage aligned with the reproduction position is driven toward the rear of the apparatus, and then in step S204. Then, the FRONT signal and the REAR signal are set to "H", and the tray motor 308 is electromagnetically braked for 50 ms.

Despite the fact that the STORE signal is "L", the carriage is driven toward the rear of the apparatus because the store position detection switch 303 is turned on from a position before the store position and the power is turned off. This is because the carriage aligned with the reproduction position may be stopped without being completely brought to the store position depending on the timing. Further, after driving the carriage, the electromagnetic brake is applied because the belt (not shown) stretched between the tray motor 308 and the tray / carriage moving mechanism 309 is extended by the carriage driving beyond the store position. This is because, due to this belt extension, the carriage is pulled out again from the stocker after the driving is stopped. For details, please refer to the patent application “Initial Position Return Device” filed on Nov. 10, 1993 by the present applicant.

Subsequently, the syscon 300 carries out step S.
If the value of "m" is checked by 205 and it is not "1", the stocker 50 is moved to the position POS by step S206.
Move to (1), MAIN's future, which will be described later.
18 (FIG. 18), monitor the mode key 301, and
Enter the loop to check the end of the performance in the playback mode.

As a result of the above, the apparatus is in the stopped state shown in FIG. 1, the stocker 50 accommodates all the carriages, and the position PO for aligning the bottommost first carriage 51 with the reproduction position.
Brought to S (1). Therefore, the upper disc lock shaft 250 reaches the disc spindle hole 163 on the third carriage 53, and the small-diameter discs 5 to 7 placed on the upper three carriages 55 to 57 due to vibrations or the like are placed on the disc for the large-diameter disc. It is prevented from moving to the recess 162. On the other hand, the control plate 43 is brought to the position shown in FIG. 2, and the lifter pin 36 and the lifter portion 583 of the interlocking member 58 are both wedge portions 167 of the second carriage 52.
It is separated from L and 167R. Therefore, the carriages 51 to 57 in the stocker are in a state of being stacked and supported in the stocker without the front end side thereof being lifted. Further, since the stocker 50 is brought to the position POS (1), the engaging portions 584L and 584R of the interlocking member 58 engage with the upper surface of the No. 7 carriage 57 to prevent the carriage from fluttering in the stocker due to vibration or the like. To prevent. Cam 110
Is brought to an angle in the down range, and the optical mechanism 200 and the lower disk lock shaft 251 are lowered to the down position and the unlock position that do not hinder the movement of the first carriage 51 aligned with the reproduction position.

On the other hand, if the carriage has not been brought to the store position and the signal bar STORE is "H", the syscon 300 advances from step S202 to step S207 to set the REAR signal to "H". Then, the syscon 300 sets the count value C to 5 in step S208, and starts the 5-second timer in step S209.
Then, the process goes to the loop of steps S210 to S212, the bar STORE signal, the time over, and the bar CEN.
Check the TER signal.

When the REAR signal is set to "H", the tray 20 or the carriage aligned with the reproduction position starts moving toward the rear of the apparatus. When the bar CENTER signal falls, the system controller 300 determines that the bar T.C. The CLOSE signal is checked to determine whether the tray has passed the reverse position or the carriage has passed the reproduction position. Bar T. If the CLOSE signal is "L", the syscon 300 considers that the carriage has passed the reproduction position, and at step S213, the flag D.D. The DET signal is checked, and if "L", FLAG (m) indicating the presence or absence of the disc on the carriage is set to "1" (disc present) in step S214, and step S21
Return to the loop from 0 to S212. On the other hand, Bar T. CLOS
If the E signal is "H", steps S210 to S2 are immediately executed.
Return to the 12 loop. Then, the carriage of the syscon 300 is brought to the store position (Fig. 1), and the carriage STO
When the RE signal becomes "L", the syscon 300 proceeds to step S203 described above.

On the other hand, if the bar STORE signal does not become "L" even after 5 seconds, the syscon 300 detects the time over at step S211, and then step S2.
15 by T. Check the CLOSE signal. Bar T. When the CLOSE signal is "H", the system controller 300
Judges that the tray 20 cannot move to the close position,
In step S230, the REAR signal is returned to "L",
Display an error and stop. On the other hand, Bar T. CLOSE
When the signal is “L”, the syscon 300 causes the shuttle 28 to come off the carriage notch 168, and
68 '(FIG. 9), the FRONT signal and the REAR signal are set to "H" in step S216, and the tray motor 308 is electromagnetically braked for 50 ms. In the apparatus of this embodiment, the bar ST
Store position detection switch 303 for forming ORE signal
(FIG. 15) is operated by the shuttle 28. And
In step S217, the syscon 300 sets the FRONT signal to "H" for 30 ms to separate the shuttle 28 from the carriage front surface 168 ', and in step S218, applies the electromagnetic brake of 50 ms to the tray motor 308.

Subsequently, the syscon 300 performs step S2.
19, the count value C is checked, and when it is confirmed that the count value C is not "0", the count value C is checked in step S220. If the POS signal is checked and it is "L", ST. The DWN signal is set to "H" and the stocker 50 is lowered.
H. Wait for the POS signal to go "H". Stocker 50
Is lowered to a position approximately midway between the positions POS (1) and POS (2), and the bar H.H. When the POS signal becomes "H", the syscon 300 goes to ST. After the UP signal is set to "H" and the stocker motor 316 is electromagnetically braked for 50 ms, ST. UP
Only the signal is set to "H" to raise the stocker 50, and in step S225, the bar H.S. Wait for the POS signal to go "L". And Bar H. When the POS signal becomes "L", the syscon 300 applies the electromagnetic brake of 50 ms to the stocker motor 316 in step S226 to stop the movement of the stocker 50. Note that the syscon 300 receives the H.264 signal in step S220. If the POS signal is "H", the process proceeds to step S224 and ST. The UP signal is set to "H" to raise the stocker 50. From the above,
The stocker 50 moves to the H.H. When the POS signal changes to "L", stop control is performed, and the shuttle 28 is positioned substantially in the middle of the first carriage 51 and the second carriage 52.

Subsequently, the syscon 300 performs step S2.
The REAR signal is set to "H" by 27 to drive the shuttle 28 toward the rear of the apparatus, the 1-second timer is started in step S228, and the count value C is decremented by 1 in step S229. Step S22
Return to 1. When the shuttle 28 moves from the position between the carriages 51 and 52 to the position where it reaches the inside of the cutout 168, the store position detection switch 303 (FIG. 15) is turned on (the bar STORE signal changes to "L"), and the system controller is turned off. Three
00 proceeds to step S203 described above.

Even after one second has passed, the shuttle 28 cannot move to the position where it reaches the inside of the notch 168.
If the TORE signal does not become "L", the system controller 300
Advances from step S211 to step S215 to redo the above control. By the stocker position control again,
The positional relationship between the shuttle 28 and the carriage is displaced, and the possibility of the shuttle 28 entering increases. However, if the shuttle 28 does not come in despite the five attempts, the syscon 300 detects that the count value C has become zero in step S219, displays an error, and stops.

When the above-mentioned initialization processing is completed, the syscon 300 monitors the mode key 301 according to the MAIN flow chart shown in FIG. 18 and checks the end of the performance in the reproduction state. The operation corresponding to the key operation in each state (each mode) will be described below in order.

<Eject / Load (E / L) Key Corresponding Operation in Eject State> The operation when the E / L key is operated in the eject state will be described. As shown in FIG. 7, in the eject state, the stocker 50
Is the position P for aligning the nth carriage with the playback position.
The selected nth carriage (the 1st carriage 51 in the drawing) brought into the OS (n) and selected in the tray 20.
Is stored and brought to the eject position. On the other hand, the control plate 43 is brought to the position shown in FIG. 5, and the lifter pin 36 and the lifter portion 583 of the interlocking member 58 are moved.
Is the wedge portion 167L, 167 of the (n + 1) th carriage
It engages with R and lifts the front side of the carriage in the stocker above the nth carriage. Further, the cam 110 is brought to an angle in the up range, and the optical mechanism 200
The lower disk lock shaft 251 is raised to the up position and the disk lock position, respectively. Therefore, the optical head 203 and the turntable 202 on the optical mechanism 200 are at the height position where they are engaged with the disk that has entered from between the tray 20 and the opening 501 of the apparatus front panel, and the disk falls into the apparatus. To prevent it. Further, the lower disc lock shaft 251 is fitted to the upper disc lock shaft 250, and regulates the movement of the small diameter disc regardless of the stocker position.

When the E / L key is operated in the above-mentioned eject state, the syscon 300 performs the step S1 to the step S1 through the JOB E / L shown in FIGS.
10, the loading control of the tray 20 is performed and the control of bringing the cam 110 to the down range (FIG. 14) is performed at the same time so as not to delay the loading start of the tray.

More specifically, the timing chart (T
As shown in C2), the syscon 300 sets the REAR signal to "H" to move the tray 20 in the close direction, and ST. The UP signal is set to “H”, the cam 110 is rotated clockwise, and the optical mechanism 200 and the lower disk lock shaft 251 are lowered. When the cam 110 rotates to the down range and the POS2 signal changes to "H", the syscon 300 goes to ST. The DWN signal is set to "H" and the stocker motor 316 is electromagnetically braked for 50 ms. After completion of the break, when it is detected that the cam 110 has exceeded the down range and the POS3 signal has become "H" due to the overrun, the syscon 300 goes to ST. When the UP signal is returned to "L" to invert the cam 110 and the POS3 signal changes to "L", ST. Set UP signal to "H" and stocker motor 3
16 is electromagnetically braked for 50 ms and stopped.

In addition to controlling the position of the cam 110 described above, the syscon 300 sets the FRONT signal to "H" when the tray 20 is brought to the reverse position shown in FIG. 8 and the bar CENTER signal becomes "L". Tray motor 3
After applying an electromagnetic brake of 08 to 50 ms, the REAR signal is returned to "L", and the tray 20 is reversed and moved in the eject direction. 100 ms later, Syscon 300 is FRON
Set the T signal to "H" and again 50m to the tray motor 308.
When it is confirmed that the cam 110 has been brought to the down range by applying the electromagnetic brake of s, the FRONT signal is returned to "L" and the tray 20 is moved again in the close direction, and the step S12 is performed. -Wait for the CENTER signal to change to "L". If the cam 110 is not brought to the down range after the break, the syscon 300 sets the FRONT signal and the REAR signal to "L".
After confirming the down range, the REAR signal is set to "H" to move the tray 20 in the close direction.
Therefore, due to variations in mechanical operation speed, etc., the optical mechanism 20
Even when the lowering operation of 0 is delayed, the tray 20 does not collide with the optical head 203 or the like and cause damage or failure of the device.

The tray 20 moved toward the rear of the apparatus is locked by a lock mechanism (not shown) at the close position (FIG. 6), and the carriage in the tray is further pulled out toward the rear of the apparatus by the shuttle 28. The pulled out carriage moves to the playback position (Fig. 3), and the bar CENT
When the ER signal changes to "L" again, the syscon 300 determines that the D.D. The DET signal is checked, and if "L" (there is a disc), the FLAG indicating the presence or absence of the disc on the mth carriage is determined in step S15.
(M) is set to "1" (there is a disc), and the step S16 waits for the "L" change of the bar STORE signal.

According to the apparatus of this embodiment, if the discs are double set on the carriage, when the carriage is moved from the reproduction position to the store position, the upper disc is moved to the edge 21 ( As shown in FIG. 7), it is left in the tray, and there is a problem that the disk may be damaged and the device may malfunction as the stocker is moved up and down.
For this reason, when the carriage is brought to the store position, the syscon 300 receives the flag D.D. When the DET signal is checked and a disc is detected in the tray, the carriage is returned to the tray and ejected, and the operator is warned that the disc is double set.

That is, when the carriage is brought to the store position and the bar STORE signal becomes "L", the syscon 300 outputs the bar D.D. If the DET signal is checked and it is "L" (there is a disc), it is judged that the disc is double set, the REAR signal is set to "L" in step S20, and the carriage is followed according to the flowchart shown in FIG. Move toward the front of the device, and
Wait for the "L" change of the ENTER signal.

The details are shown in the timing chart (TC4) of FIG. 30, and the syscon 300 executes step S21.
The FRONT signal to "H" to move the carriage toward the front of the apparatus.
Wait for "L" change of NTER signal. When the carriage moves to the reproduction position and the bar CENTER signal becomes "L", the syscon 300 sets FLAG in step S23.
(M) is reset to "0", and the step S24 waits for "L" change of the bar EJECT signal. When the tray 20 is brought to the eject position and the bar EJECT signal becomes "L", the syscon 300 sets the REAR signal to "H" in step S26 and outputs the signal to the tray motor 308.
After applying an electromagnetic brake of 0 ms, the process proceeds to ST. The DWN signal is set to "H", the cam 110 is rotated clockwise, and the optical mechanism 200 and the lower disk lock shaft 251 are raised. When the cam 110 moves to the up range and the POS1 signal changes to “L”, the system controller 3
00 is ST. Set UP signal to "H" and stocker motor 3
16 is electromagnetically braked for 50 ms, and step S27
Set MODE to EJECT by MAIN rule-
Return to Chin.

On the other hand, the syscon 300 receives the D.D. When it is confirmed that the DET signal is "H" (no disk), the process proceeds to step S150, the REAR signal is changed to a pulse shape with a duty of 40% for 100 ms, and the REAR signal is set to "H" in step S18. A 50 ms electromagnetic brake is applied to the tray motor 308. Then, the value of "m" is checked in step S151, and if it is not "1", the stocker 50 is moved to the position POS (1) in step S152, and step S152 is performed.
Set MODE to STOP by 19 and return to MAIN routine.

<E / L key compatible operation in reproduction state>
Next, the operation when the E / L key is operated in the reproduction state will be described. As shown in FIG. 4, when in the reproduction state, the stocker 50 is brought to the position POS (n) for aligning the nth carriage with the reproduction position, and the selected nth carriage is brought to the reproduction position. ing. Cam 1
10 is brought to the angle of the up range, and the optical mechanism 200 and the lower disk lock shaft 251 are raised to the up position and the disk lock position, respectively. The disk on the nth carriage brought to the playback position is a turntable.
It is held between a bull 202 and a clamper 190, and is rotationally driven by a spindle motor 203. The optical head 203 optically reads the recorded information on the disk by an optical beam, and the reproduction signal is RF as shown in FIG.
It is input to the signal processing circuit 320 via the amplifier 322,
After performing EFM demodulation, deinterleave, error correction, etc., D / A converters 323, 324, LPF 32
5, and converted to analog audio signals of Lch and Rch via 326, and output. Further, the lower disc lock shaft 251 is fitted with the upper disc lock shaft 250,
The movement of the disc in the stocker is regulated together with the upper disc lock shaft 250. On the other hand, the control plate 43 is brought to the position shown in FIG.
Also, the lifter portion 583 of the interlocking member 58 engages with the wedge portions 167L and 167R of the (n + 1) th carriage, lifts the front side of the carriage in the stocker located above the nth carriage, and raises the reproduction disc and the upper portion thereof. The space between the stacked discs and the stocker is widened.

When the E / L key is operated in the above-mentioned reproduction state, the syscon 300 proceeds from step S1 to JOB.
E / L is advanced to steps S10, S28, and S29, and the signal processing circuit 320 and the servo signal processing circuit 321 (see FIG. 1).
After controlling 5) to stop the disk reproduction, the cam 110 is brought to the down range (FIG. 14) in step S30.

The details are shown in the timing chart (TC3) of FIG. 31, and the syscon 300 executes step S30.
By ST. The UP signal is set to “H”, the cam 110 is rotated clockwise, and the optical mechanism 200 and the lower disk lock shaft 251 are lowered. When the cam 110 rotates to the down range and the POS2 signal changes to "H", the syscon 300 goes to ST. Set DWN signal to "H"
The electromagnetic brake of 50 ms is applied to the data 316. After completion of the break, when it is detected that the cam 110 has exceeded the down range and the POS3 signal has become "H" due to the overrun, the syscon 300 goes to ST. When the UP signal is returned to "L" to invert the cam 110 and the POS3 signal changes to "L", ST. The UP signal is set to "H" and the stocker motor 31
6 is electromagnetically braked for 50 ms. Subsequently, the syscon 300 sets the FRONT signal to "H" in step S31 to move the carriage at the reproduction position toward the front of the apparatus, resets FLAG (m) to "0" in step S32, and then executes step S33. -E
Wait for "L" change of JECT signal.

When the tray in which the carriage is stored is brought to the eject position and the bar EJECT signal becomes "L", the syscon 300 causes REAR in step S34.
The signal is set to "H" and an electromagnetic brake of 50 ms is applied to the tray motor 308, and in step S35, ST. DWN
The signal is set to "H" and the cam 110 is rotated counterclockwise. When the CAM 110 rotates to the up range and the POS1 signal becomes “L”, the syscon 300 starts ST. The UP signal is set to "H", the electromagnetic brake of 50 ms is applied to the stocker motor 316, and MODE is changed to EJE in step S27.
Set to CT and return to MAIN Routine.

<E / L key compatible operation in stop state>
Next, when the E / L key is operated in the stopped state,
The system controller 300 proceeds from step S1 to JOB E / L to steps S10, S28, S36 and S37 to check whether the value of "n" indicating the selected carriage number and the value of "m" indicating the stocker position are the same. If they are different, the stocker 50 is moved to the position POS (n) to align the selected carriage numbers with the reproduction position, and then the carriages aligned according to the flow chart shown in FIG. Eject it. The details are omitted because they overlap.

<Operation for Play Key in Eject State> Next, when the play key is operated in the eject state, the syscon 300 starts from step S2 to FIG.
2. In step S4, the JOB PLAY shown in FIG.
0, S41, and the timing chart (TC
As shown in 5), the loading control of the tray 20 and the control of bringing the cam 110 to the down range (FIG. 14) are performed.

When the tray 20 is brought to the close position (FIG. 6), the carriage in the tray moves to the reproducing position and the bar CENTER signal changes to "L", the syscon 300 outputs the bar at step S43. D. If the DET signal is checked and it is "L", FLA is determined in step S44.
G (m) is set to "1", and the carriage is positioned at the reproduction position according to the following procedure in step S45. First, the FRONT signal is set to "H", the tray motor 308 is electromagnetically braked for 50 ms, and when the carriage exceeds the reproduction position due to the overrun, the REAR signal is set to "L" and FRONT is set. Signal cycle 10m
s, 50% duty to change the pulse to return the carriage at low speed, and when the bar CENTER signal becomes "L", the FRONT signal and the REAR signal are set to "H" and the tray motor 308 receives 50 ms. Apply the electromagnetic brake of.

Subsequently, the syscon 300 performs step S4.
6 brings the cam 110 to the up range (FIG. 14). First, ST. The cam 110 by setting the DWN signal to "H"
Is rotated counterclockwise to raise the optical mechanism 200 and the lower disc lock shaft 251. When the CAM 110 is brought to the up range and the POS1 signal becomes “L”, the syscon 300 goes to ST. The UP signal is set to "H" and the stocker motor 316 is electromagnetically braked for 50 ms. Then, in step S47, the syscon 300 controls the signal processing circuit 320 and the servo signal processing circuit 321 to start disc reproduction, and in step S48 sets MODE to PLAY and returns to the MAIN routine.

On the other hand, the syscon 300 receives the D.D. If the DET signal is "H" (no disk), the process proceeds to step S50 to wait for the "L" change of the bar STORE signal. When the carriage moves to the store position and the bar STORE signal becomes "L", the system controller 30
0 indicates that the REAR signal is 100 ms in step S153.
During the period, the pulse motor is changed in a pulse shape with a period of 10 ms and a duty of 40%, and then the FRONT signal and the REAR signal are set to "H" in step S51, and the tray motor 308 is set to 50.
Apply an ms electromagnetic brake. Continuing, Syscon 3
00 checks the value of "m" in step S154, and if it is not "1", moves stocker 50 to position POS (1) in step S155, and then sets MODE to STOP in step S52.
Return to Routine.

<Play-key compatible operation in stop state>
Next, when the play key is operated in the stopped state,
Syscon 300 executes JOB PLAY in step S40,
In S53 and S54, the presence or absence of the disc on the selected nth carriage is checked by FLAG (n),
If it is "1", it is checked in step S154 whether the value of "n" and the value of "m" are the same. If they are different, the stocker 50 is moved to the position POS (n) in step S155, and the nth carriage is moved. To the playback position.

Subsequently, the syscon 300 performs step S
The FRONT signal is set to "H" by 55 and the nth carriage is moved toward the front of the apparatus, and the change of "L" of the bar CENTER signal is waited for in step S56. When the carriage is brought to the reproduction position and the bar CENTER signal becomes "L", the syscon 300 causes the bar D.D. Check the DET signal to see if there is an error in FLAG (m).

In step S57, the D. When the DET signal confirms "L" (with disk), the syscon 30
For 0, the carriage is positioned at the reproduction position in step S58, and subsequently the cam 110 is brought to the up range in step S59. More specifically, as shown in the timing chart (TC6) of FIG. 33, when the bar CENTER signal becomes "L", the syscon 300 sets the REAR signal to "H" and causes the tray motor 308 to receive an electromagnetic blur of 50 ms. When the carriage exceeds the reproduction position due to overrun, the FRONT signal is set to "L" and the REAR signal is changed in a pulse shape at a cycle of 10 ms and a duty of 50%. Return at low speed. Then, when the bar CENTER signal becomes "L", FRON
Both the T signal and the REAR signal are set to "H", and the tray motor 308 is electromagnetically braked for 50 ms.

Subsequently, the syscon 300 is connected to ST. DW
The N signal is set to “H”, the cam 110 is rotated counterclockwise, and the optical mechanism 200 and the lower disk lock shaft 251 are raised. Cam 110 is brought to the up range and PO
When the S1 signal becomes “L”, the syscon 300 goes to ST. U
50 ms to the stocker motor 316 by setting the P signal to "H".
Apply the electromagnetic brake of. Then, the syscon 300 starts the disc reproduction in step S60, and then in step S60.
At 61, set MODE to PLAY and return to the MAIN routine.

On the other hand, in step S57, the D.D. D
If the ET signal is “H”, the syscon 300 performs step S
The FLAG (m) was corrected to “0” at 64, and the following FIG.
As shown in timing chart 4 (TC7),
In step S65, the FRONT signal is set to "L", REA
The R signal is set to "H" and the carriage is moved toward the rear of the apparatus, and the step S66 waits for the "L" change of the bar STORE signal. When the carriage is brought to the store position and the bar STORE signal becomes "L", the system controller 3
00 sets the REAR signal to 100 ms in step S67
During this period, the pulse shape is changed with a cycle of 10 ms and a duty of 40%, and the FRONT signal and RE are changed in step S68.
The AR signal is set to "H" and the tray motor 308 receives 50 ms.
Apply the electromagnetic brake of.

Subsequently, the syscon 300 carries out step S.
62, all FLAGs are sequentially searched from FLAG (1), and when the FLAG of "1" is found, the value of "n" is changed to that F.
After setting the value of the LAG number and moving the stocker 50 to the position POS (n) in step S63, the process proceeds to step S55 described above. The system controller 300 also proceeds to step S62 when FLAG (m) is "0" in step S54. On the other hand, if all FLAGs are "0" in step S62, the syscon 300 checks the value of "m" in step S156,
If the value is other than "1", the stocker 50 is moved to the position POS (1) in step S157, and the process returns to the MAIN routine. Therefore, the syscon 300 ignores the play key operation.

<Stop Key Corresponding Operation in Playback State> Next, when the stop key is operated in the playback state, the syscon 300 advances the JOB STOP shown in FIG. 24 from step S3 to steps S70 and S71,
After the disk reproduction is stopped, the cam 110 is brought to the down range in step S72.

The details are shown in the timing chart (TC8) of FIG. The UP signal is set to “H”, the cam 110 is rotated clockwise, and the optical head 200 and the lower disk lock shaft 251 are lowered. Cam 110 is brought to the down range and POS
When the 2 signal becomes “H”, the syscon 300 goes to ST. DW
Set the N signal to "H" and put it on the stocker motor 316 for 50 ms.
Apply the electromagnetic brake of. Cam 11 by overrun
If 0 exceeds the down range, the syscon 300 goes to ST.
Only the UP signal is set to "L" and the cam 110 is rotated in the reverse direction.
When the POS3 signal becomes "L", ST. The UP signal is set to "H" and the stocker motor 316 is electromagnetically braked for 50 ms. Subsequently, the syscon 300 sets the REAR signal to "H" in step S73 to move the carriage toward the rear of the apparatus, and waits for "L" change of the bar STORE signal in step S74.

When the carriage is brought to the store position and the bar STORE signal becomes "L", the syscon 300 causes the bar D.D. When the DET signal is checked and it is "H", the REAR signal is sent for 100 ms, the cycle is 10 ms, and the duty is 40% in step S158.
After changing to a pulse shape at,
Set the RONT and REAR signals to "H"
A 50 ms electromagnetic brake is applied to the data 308. And
The syscon 300 checks the value of "m" in step S159, and if other than "1", moves the stocker 50 to the position POS (1) in step S160, and then sets MODE to STOP in step S77.
Return to AIN Routine. On the other hand, in step S75, the syscon 300 receives the D.D. If the DET signal is "L", the REAR signal is set to "L" in step S78, and the carriage is inserted into the tray and ejected according to the flow chart shown in FIG.

<Operation for Corresponding Disc Selection Key in Eject State> Next, when the disc selection key is operated in the eject state, the syscon 300 starts from steps S4 to S7 corresponding to the operated disc selection key as shown in FIG. ~ JOB DISC-1 ~ JOB shown in FIG. 27
-Go to DISC-7, set "n" to the value of the disk number, and then go to steps S84 and S85.

The system controller 300 executes step S85.
As shown in the timing chart (TC5) of FIG. 29, the loading control of the tray 20 and the control of bringing the cam 110 to the down range (FIG. 14) are performed.
Note that details thereof are omitted because they overlap with the description of step S11 described above.

When the tray 20 is brought to the close position (FIG. 6), the carriage in the tray moves to the reproducing position, and the bar CENTER signal changes to "L", the syscon 300 outputs the bar at step S87. D. Check the DET signal and if it is "L" (with disk), step S
FL indicating the presence or absence of the disc on the mth carriage by 88
AG (m) is set to "1" (there is a disk), and the step S90 waits for the "L" change of the bar STORE signal. The carriage is brought to the store position and the bar ST
When the ORE signal becomes "L", the syscon 300 outputs the D.D. Check the DET signal,
When "H" is confirmed, the REAR is performed in step S161.
Signal for 100 ms, period 10 ms, duty 40
After changing to a pulse shape with%, the FRONT signal and the REAR signal are set to "H" in step S92, and the tray motor 308 is electromagnetically braked for 50 ms. Then, the syscon 300 causes the stocker 5 to move through step S93.
Position 0 where the nth carriage is aligned with the playback position POS
After moving to (n), the nth carriage aligned according to the flow chart shown in FIG. 20 is inserted into the tray and ejected. On the other hand, the syscon 300 receives the D.D. If the DET signal is "L", it is determined that the disk is double-set, the REAR signal is set to "L" in step S94, and then the process proceeds to the flow chart shown in FIG. 16 to return the carriage to the tray, Eject it.

<Operation for Disc Selection Key in Playback State> Next, when the disc selection key is operated in the playback state, the syscon 300 executes steps S4 to S7 corresponding to the disc selection key in the same manner as described above.
-1 to JOB-DISC-7, and after setting "n" to the value of the disk number respectively, steps S84 and S9
In step S96, the FLAG (n) is checked to see if there is a disk on the selected nth carriage.
When FLAG (n) is "0" (no disc), the syscon 300 immediately returns to the MAIN routine and ignores the disc selection key operation. On the other hand, if FLAG (n) confirms "1" (with disk), syscon 300
Stops the disc reproduction in step S97, and brings the cam 110 to the down range (FIG. 14) in step S98. Then, in step S99, the REAR signal is set to "H" to move the carriage at the reproduction position toward the rear of the apparatus, and in step S100, the change of "L" in the bar STORE signal is waited.

The carriage moves to the store position and the bar
When the STORE signal becomes "L", the system controller 300 determines that the D.D. The DET signal is checked, and if it is "L" (there is a disc), it is determined that the disc is a double set, the REAR signal is set to "L" in step S102, and the flow chart shown in FIG. Eject the carriage. On the other hand, in step S101, the D. When the DET signal confirms "H", the syscon 300 executes RE in step S162.
The AR signal is changed in a pulse shape with a period of 10 ms and a duty of 40% for 100 ms, and the FRONT signal and the REAR signal are set to "H" in step S103 to apply an electromagnetic brake of 50 ms to the tray motor 308. .

Subsequently, the syscon 300 carries out step S.
The stocker 50 is moved to the position POS (n) where the selected nth carriage is aligned with the reproduction position by 104, and the FRONT signal is set to "H" in step S105 to move the aligned nth carriage toward the front of the apparatus. , Waiting for the L-CENTER signal to change to "L" in step S106. The nth carriage is brought to the playback position
When the CENTER signal becomes "L", step S107
By D. When the DET signal is checked and "L" (there is a disc) is confirmed, the carriage is positionally controlled to the reproduction position in step S108. Then, the system controller 300 moves the cam 110 to the up range (FIG. 14) in step S109, starts disc reproduction in step S110, and then executes M in step S111.
Set ODE to PLAY and return to MAIN routine.

On the other hand, the syscon 300 operates in step S107.
At bar D. DET signal is "H" (no disc)
Is confirmed, FLAG (m) is corrected to “0” in step S112, and then FRON is determined in step S113.
The T signal is set to "L" and the REAR signal is set to "H" to move the carriage toward the rear of the apparatus, and waits for "L" change of the bar STORE signal in step S114. When the carriage is brought to the store position and the bar STORE signal becomes "L", the syscon 300 changes the REAR signal in a pulse shape at a cycle of 10 ms and a duty of 40% for 100 ms in step S163. , FRONT signal and REAR signal are set to “H” in step S115
Then, a 50 ms electromagnetic brake is applied to the tray motor 308. Then, the system controller 300 checks the value of "m" in step S164, and if other than "1", moves the stocker 50 to the position POS (1) where the first carriage is aligned with the reproduction position in step S165, and then in step S116. Set MODE to STOP and MA
Return to IN Routine.

<Continuous Playback Operation in Playback State>
When the disc reproduction reaches the end position, the system controller 300 proceeds from step S8 to JOB NEXT shown in FIG. 28, stops the disc reproduction in step S120, and then holds the cam 110 in the down range (FIG. 14) in step S121. Come on. Then, the syscon 300 sets the REAR signal to "H" to move the carriage toward the rear of the apparatus in step S122, and waits for the "L" change of the bar STORE signal in step S123.

When the carriage is brought to the store position and the bar STORE signal becomes "L", the syscon 300 causes the bar D.D. The DET signal is checked, and if it is "L" (there is a disc), it is determined that the disc is double set, and the REAR signal is set to "L" in step S125, and then the flow chart shown in FIG. And eject the carriage. on the other hand,
In step S124, the D. DET signal is "H"
When (no disk) is confirmed, the syscon 300 changes the REAR signal in a pulse shape at a cycle of 10 ms and a duty of 40% for 100 ms in step S166, and then in step S126, the FRONT signal and the REA signal.
The R signal is set to "H" and the tray motor 308 is electromagnetically braked for 50 ms.

Subsequently, the syscon 300 performs step S1.
27, FLAG (m + 1) to FLAG (7) are sequentially checked, and when a FLAG of "1" (carriage on which a disk is mounted) is found, the value of "n" is set to FLA of "1".
It is set to the value of G number, and at step S129, the stocker 50 is moved to the position PO where the nth carriage is aligned with the reproduction position.
It moves to S (n), and FRON is carried out by step S130.
The T signal is set to "H", and at step S131 the bar C
Wait for the "L" change of the ENTER signal.

The carriage moves to the reproduction position and the bar C
When the ENTER signal becomes "L", the syscon 300 goes to the D.D. When the DET signal is checked and "L" (with disk) is confirmed, step S
The carriage is positioned at the reproducing position by 133 and the cam 110 is moved up in step S134 (FIG. 14).
Bring to. Then, the syscon 300 performs step S13.
5, the disc reproduction is started, MODE is set to PLAY in step S136, and the process returns to the MAIN routine.

On the other hand, the syscon 300 operates in step S132.
By D. When the DET signal confirms "H" (no disk), FLAG (m) is corrected to "0" in step S137, and FRONT is determined in step S138.
The signal is set to "L" and the REAR signal is set to "H", the carriage is moved toward the rear of the apparatus, and the step S139 waits for the "L" change of the bar STORE signal. The carriage moves to the store position and the bar STORE signal is "L".
Then, in step S169, the syscon 300 performs R
After changing the EAR signal in a pulse shape at a period of 10 ms and a duty of 40% for 100 ms, step S14 is performed.
The FRONT signal and the REAR signal are set to "H" by 0, and the electromagnetic brake of 50 ms is applied to the tray motor 308. Then, the syscon 300 performs the above-described step S12.
Returning to step 7, the carriage on which the disk is placed is again searched.

Further, the syscon 300 executes step S127.
When it is confirmed that all of FLAG (m + 1) to FLAG (7) are "0", the value of "m" is checked in step S167. If the value is other than "1", the stocker 50 is set to the first in step S168. The carriage is moved to the position POS (1) aligned with the reproduction position, and MODE is set to STOP in step S128 to set MAI.
Return to Nruchin.

The present invention is not limited to the above-mentioned embodiments, but can take various forms. For example,
According to the above-described embodiment apparatus, the stocker 50 capable of storing a plurality of disks is arranged in the apparatus so as to be vertically movable,
Although the example applied to the changer type disc reproducing apparatus in which the discs on the tray 20 are replaceable has been described, it may be applied to a front loading type disc reproducing apparatus capable of reproducing only a single disc. Of course. Further, in order to prevent a delay in the loading operation of the tray, the loading of the tray 20 is started and
I started to move the optical mechanism 200 to the down position,
Tray 2 after bringing optical mechanism 200 to the down position
The 0 loading may be started. Furthermore, tray 2
After bringing 0 to the eject position, the movement of the optical mechanism 200 to the up position was started, but it was detected that the tray 20 passed the position (reversal position) where it did not engage with the optical mechanism 200, and The movement of the mechanism 200 to the up position may be started.

Further, in order to correct the disc position on the tray, the tray is once moved in the reverse direction at the reversing position shown in FIG. 8, but this reversing operation may not be provided. Also in this case, when the loading tray moves past the reverse position, it is confirmed whether the optical mechanism 200 is brought to the down position, and if not, the tray loading is performed. Once you stop,
It is possible to prevent the tray from being engaged with the optical head, the turntable, or the like.

[0079]

As described above, according to the device of the present invention,
Since the position of the disc reproducing means is controlled so that the disc reproducing means is brought to the up position for reproducing the disc when the tray means is at the eject position for inserting and removing the disc, the cost is increased. It is possible to prevent the disc from dropping into the device from between the tray means and the opening of the front panel without inviting.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of the present disc reproducing apparatus in a stopped state.

FIG. 2 is a perspective view of a main part showing a relationship between a stocker 50 and a carriage lifter mechanism in a stopped state.

FIG. 3 is a cross-sectional view of a main part of the present disc reproducing apparatus showing a state where a carriage 51 is brought to a reproducing position.

FIG. 4 is a cross-sectional view of a main part of the disc reproducing apparatus in a reproducing state.

FIG. 5 is a perspective view of a main part showing a relationship between a stocker 50 and a carriage lifter mechanism in a reproduction state.

FIG. 6 is a cross-sectional view of a main part of the disc reproducing apparatus showing a state where the tray 20 is brought to the close position.

FIG. 7 is a cross-sectional view of a main part of the disc reproducing apparatus in an eject state.

FIG. 8 is a cross-sectional view of a main part of the present disc reproducing apparatus showing a state where the tray 20 is brought to the reverse position.

FIG. 9 is a perspective view of a carriage 57.

FIG. 10 is a perspective view of an interlocking member 58.

FIG. 11 is a diagram showing a positional relationship between a cam 260 and SWs 312 to 314 at a cam angle of +22.5 degrees.

FIG. 12: Cam 260 at cam angle -112.5 degrees
The figure which shows the positional relationship of SW312-314.

FIG. 13 is a cam 260 at a cam angle of -202.5 degrees.
The figure which shows the positional relationship of SW312-314.

FIG. 14 is an optical mechanism 200 with respect to a rotation angle of a cam 110.
And a timing chart showing the positional relationship of movement of the lower disc lock shaft 251.

FIG. 15 is a block diagram showing a control circuit of the disc reproducing apparatus.

FIG. 16 shows a bar D. for the position of the stocker 50. CNT
Signal and bar H. A timing chart showing changes in the state of the POS signal.

FIG. 17 is a flowchart showing the initialization routine.
To.

FIG. 18 is a flowchart showing a MAIN routine.

FIG. 19 is a flowchart showing a JOB EJECT routine.

FIG. 20 is a flowchart showing a JOB EJECT routine.

FIG. 21 is a flowchart showing a JOB EJECT routine.

FIG. 22 is a flowchart showing a JOB PLAY routine.

FIG. 23 is a flowchart showing a JOB PLAY routine.

FIG. 24 is a flowchart showing a JOB STOP routine.

FIG. 25 is a flowchart showing a JOB DISC routine.

FIG. 26 is a flowchart showing a JOB DISC routine.

FIG. 27 is a flowchart showing a JOB DISC routine.

FIG. 28 is a flowchart showing the JOB NEXT routine.

FIG. 29 is a timing chart used for explaining the flowcharts of FIGS. 19, 22, and 25.

FIG. 30 is a timing chart used for explaining the flowchart of FIG. 20.

FIG. 31 is a timing chart used for explaining the flow chart of FIG. 21.

FIG. 32 is a timing chart used for explaining the flowchart of FIG. 22.

FIG. 33 is a timing chart used for explaining the flowchart of FIGS. 23 and 27.

FIG. 34 is a timing chart used for explaining the flowchart of FIGS. 23 and 27.

FIG. 35 is a timing chart used for explaining the flowchart of FIGS. 24, 26, and 28.

FIG. 36 is a diagram showing a display example of a display 329.

FIG. 37 is a diagram showing another display example of the display 329.

FIG. 38 is a diagram showing another display example of the display 329.

[Explanation of symbols]

 1 to 7 disk 20 tray 28 shuttle 50 stocker 51 to 57 1st carriage to 7th carriage 110 rotating cam 200 optical mechanism 202 turntable 203 optical head 300 system controller 307, 315 motor drive circuit 308 tray model -Ter 316 Stocker motor 317 Switching mechanism 327 Spindle motor 502 Opening 520 Slide plate

Claims (4)

[Claims] 1. A disk means for loading a disk is horizontally moved from an eject position for loading and unloading the disk to a playback position in the main body of the apparatus to load the disk. In a front-loading type disc reproducing apparatus for reproducing a disc on the tray means by moving it to an up position for reproducing, when the tray means is in the eject position, the disc reproducing means is in the up position. A control means for controlling the position of the disc reproducing means is provided so that the disc is dropped into the main body of the apparatus from between the tray means and the opening of the front panel of the apparatus. A disk reproducing device characterized by being prevented. 2. The disc reproducing apparatus according to claim 1, wherein said control means starts moving said disc reproducing means to said up position after bringing said tray means to said eject position. . 3. The disc reproducing apparatus according to claim 1, wherein the control means starts moving the tray means to the reproducing position and also starts moving the disc reproducing means to the down position. apparatus. 4. The control means detects the position of the disc reproducing means in response to the tray means having passed a predetermined position, and when the disc reproducing means is not brought to the down position, the control means detects the position of the disc reproducing means. 4. The disc reproducing apparatus according to claim 3, wherein the movement of the tray means to the reproducing position is stopped to prevent the tray means from colliding with the disc reproducing means.