JPH06325452A - Disk player - Google Patents

Abstract

PURPOSE:To eliminate the need for manual labor to carry out several times reinserting operations by automatically carrying out a reinsertion operation of a disk in the case of a failure in normal execution of the first disk chucking. CONSTITUTION:A sensor (not shown in Fig.) acts and a loading roller 3 rotates forward to carry the disk (d) to the position of a turn table 5 when an operator pushes the disk (d). In succession, a sliding plate 16 is slid and a clamper 6 descends to chuck the disk (d) as the turn table 5 ascends. The diameter of the disk (d) is then measured and a controller 9 decides the disk as foreign matter in case of the disk of an off-standard size and runs a motor 7 backward to reject the disk by reverse rotation of the roller 3. The completion of the chucking is detected by a limit switch 10 and an engaging part 16a of the sliding plate 16 when the disk diameter is accepted. The chucking is released by slightly rotating the loading roller 3 reversely and thereafter, the chucking is automatically repeated again if the chucking is not correctly completed and the signal from the limit switch 10 shows non-completion even after five seconds.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk player, and more particularly to a disk player which automatically loads a disk to a turntable position by loading means and chucks the disk by a chuck means so as to rotate and drive the position.

[0002]

2. Description of the Related Art A disc player is known in which a disc is automatically carried into a turntable position by a loading means such as a loading roller and chucked by chuck means such as a clamper at the position. In this type of disc player, if the disc loaded into the turntable position is not chucked normally, it cannot be played (played), so it is automatically stopped or automatically stopped. The disc was ejected.

[0003]

However, even when the automatic stop or automatic eject is performed as described above,
In many cases, if the operator (user) removes the disc from the player and then repeats the loading operation, the disc is normally chucked, and most operators (users) do so. is there. In other words, automatic chucking after automatic loading of a disc is an operation of sandwiching the disc between the clamper and the turntable, but if the loading position of the disc on the turntable is slightly deviated, the clamper and turntable will not move. In most cases, the engagement of the small uneven steps for pinching is slightly deviated, resulting in chucking failure.Take the disc out of the player and repeat the loading operation. Since the loading position of the disc to the upper part is slightly different, it is almost always caught by another chucking.

[0004] The above-mentioned re-entry operation may be successful once, or may not be successful even if it is repeated several times (resulting in automatic stop or automatic eject). This is annoying, and in the case of an in-vehicle player, there is a problem in that the user's attention is concentrated on the disc player, and one hand is blocked because the disc is put in and out again, which is unfavorable for safety. It was The present invention is intended to solve the above problems.

[0005]

DISCLOSURE OF THE INVENTION A disc player of the present invention is a disc player in which a disc is carried into a turntable position by a loading device and chucked at the table position by a chucking device. A means for detecting whether or not the disk has been ejected, and an operation for reversing the loading means to carry out the disc from the table position when the chucking completion signal by the detecting means is not issued within a fixed time.
A disk provided with a disk reload command means for performing a disk reloading operation consisting of an operation of normally rotating the loading means to carry the disk back to the table position after the unloading operation, and a re-chucking operation at the table position. It is a player. In addition, after the disk re-ordering operation by the disk re-ordering means is completed once, whether or not chucking is completed is detected by the detection means, and a chucking completion signal is issued by the detection means within a fixed time. The disc player further includes a disc re-insertion operation repeating unit that executes the disc re-insertion operation by the disc re-insertion instruction unit when the disc is not present.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic block diagram of a vehicle-mounted disc player according to this embodiment. This disc player includes a loading mechanism (4) including a loading roller (3) for loading the disc (d) inserted into the housing (2) from the slit (1) to a turntable position, and the loading mechanism (4). It is composed of a turntable (5), a clamper (6), and the like for chucking the disk (d) loaded to the turntable position from above and below.

The loading mechanism (4) is connected to the loading roller (3) at high speed to drive the roller (3) to rotate, and a driver (8) for the motor (7).
And a control device (9) equipped with a microcomputer for rotating the motor (7) forward and backward via a driver (8). The control device (9) sends a signal from a limit switch (10) which will be described later. After loading, the loading roller (3) is rotated normally or reversely at the appropriate time.

The turntable (5) is directly connected to the output shaft of the motor (11), and the motor (11) is vertically moved by an elevator mechanism (not shown) similar to the elevator mechanism of the clamper (6) described later. It is designed to be raised and lowered. That is, the motor (11) and the turntable (5) integrally move up and down between the solid line and the chain line in FIG. The lower position of the turntable (5) is slightly lower than the disk (d) loaded by the loading roller (3). The motor (11) is also connected to the control device (9) via the driver (12) and is freely rotated by a command from the control device (9).

The clamper (6) has its base end side pivotally supported (13) by the housing (2) to be rotatable (1).
The arm (14) is provided at the tip of 4) and can be moved up and down by the following lifting mechanism (15). That is, it slides back and forth on both sides of the motor (11) and the turntable (5) (arrow A).
A slide plate (16) is provided, and this slide plate (1
In the step-shaped elongated hole (17) formed in 6), the arm
4) is engaged with the pin (18) projecting from it, and if the slide plate (16) slides in the direction of arrow A in FIG. 1, the arm (14) turns around the pivot (13) point. (Arrow B), the clamper (6) moves up and down.

At the lower end of the slide plate (16), a rack (1
9) is provided, and a gear (20) meshing with the rack (19) is a large diameter gear (21) and a gear (2) which are coaxial.
2) is connected to a motor (23) in an interlocking manner, and the motor (23) is normally and reversely rotated by a control device (9) via a driver (24), whereby a slide plate (1
6) slides back and forth.

On the upper part of the slide plate (16), an engaging portion (16a) which engages with a limit switch (10) fixed to the housing (2) is projectingly provided, and the arm (1)
4) (i.e., the clamper (6)) descends to the lowest position, the engaging portion (16a) turns off the limit switch (10) for the first time, the limit switch (10) outputs a signal (a), and the control device (9) can recognize the completion of the descent of the clamper (6) to the lowest descent position. That is, in this embodiment, the limit switch (10) and the engaging portion (16a) constitute the chucking completion detecting means. Incidentally, (PU) is a laser pickup controlled by the control device (9).

Next, the operation of the above embodiment will be described with reference to the flowchart of FIG. That is, when the operator (user) pushes the disc (d) through the slit (1), a sensor (not shown) operates to cause the loading roller (3) to rotate normally to carry the disc to the position of the turntable (5), and As a result, the slide plate (16) is slid to raise the turntable (5) and the clamper (6) is lowered to chuck the disc (step S1). Next, in steps S2 and S3, it is detected whether the loaded disk has a diameter of 8 cm or a diameter of 12 cm, and if neither is found, the loaded material is found to be a foreign substance (step S4), and immediately an eject operation (step S5) is performed. Stopping the loading motor (step S6)
Then, the pickup is stored (step S7).
The eject operation is an operation in which the control device (9) reverses the motor (7) to reverse the loading roller (3). The disc diameter is determined by a sensor pin (not shown) provided in the housing (2), and a signal is issued to the control device in accordance with the movement of the sensor pin to determine the disc diameter.

If the disc diameter is determined in step S2 or S3, it is detected in step S8 whether or not chucking is completed.
That is, since the chucking completion detecting means is composed of the limit switch (10) and the engaging portion (16a) provided on the slide plate (16) in this example, the limit switch (1)
It is determined whether or not there is a signal (a) from 0), and if there is a signal, chucking has been normally executed to the end, and it is then determined whether or not the pickup is in focus (step S9). , OK, the play mode is entered (step S10), and if the track search is OK (step S11), the performance is entered (step S12).

As a result of the determination in step S8, chucking is not completed (signal (a) from the limit switch).
If not completed after 5 seconds, a series of disk reinserting operations are performed in steps S14 to S18. That is, first, in step S14, the chucking is once released, and then the loading roller (3) is slightly reversed to eject the disc (d) from the turntable position (step S15), and the disc is placed on the turntable (5). In the state where no mark is placed, the turntable (5) is rotated by 90 degrees (step S16), and when the rotation is completed, the loading roller (3) is normally rotated again to rotate the disc (d) into the turntable (5). It is brought to the position (step S17), and chucking is carried out by raising the turn hobble and lowering the clamper (step S18).

As described above, the chucking can be released by sliding the slide plate (16) to the rear of the housing as indicated by the arrow A, and the turntable (5) can be rotated by 90 degrees only by the control device (9). This is done by rotating 11). The rotation of the turntable (5) by 90 degrees has an effect of eliminating the unevenness on the turntable and the unevenness of the clamper which are not fitted well in the first chucking operation.

Then, the disk reinserting operation is performed 3 times.
If it is the third time (step S19), if it is not the third time, the process returns to step S8 to determine whether the chucking is completed. If the result is OK, the mode shifts to the play mode described above. For example, after waiting for 5 seconds (step S13), a series of disk reinserting operations (steps S14 to S18) are executed again.

If it is determined in step S19 that the disk reinserting operation is the third time, the operation returns to step S5, and the disk ejecting operation is executed. That is, 3
If normal chucking does not occur even after repeating,
In many cases, this is not a malfunction due to a simple or slight reason, and in that case, it is determined that normal chucking is unlikely to occur even if the shuffling operation is repeated. Then, since the turntable is rotated by 90 degrees while performing the above-described reinserting operation three times, the fitting surfaces of the turntable (5) and the clamper (6) are also fitted in three different states. Therefore, in the case of defective chucking due to a slight obstacle, normal chucking is often performed by the third time.

If it is determined in step S9 that the focus is out of focus, the focus search is repeated four times, and if the focus does not become OK even after the fourth search is completed, the above-described disc reinserting operation (step S14
To S18). Also in the track search of step S11, if 10 seconds have passed without the track search becoming OK, the process similarly shifts to the disk reinserting operation (steps S14 to S18).

The unloading of the disc (d) in step S15 may be carried out if the disc (d) is slightly off the turntable (5), and therefore the reverse amount of the disc loading means may be very small. vice versa,
The loading roller (3) may be rotated in the reverse direction so large that the disc (d) projects from the housing slit (1). Further, the rotation angle of the turntable (5) in step S16 is not limited to 90 degrees, but may be 45 degrees, 60 degrees, or other angles.

[0020]

As described above, in the disc player according to the present invention, when the first disc chucking is not properly performed, the disc is automatically ejected instead of being ejected immediately. Since the operation is performed, the user does not have to bother with re-doing operations several times, and in the case of an in-vehicle disc player, in particular, the user's attention may be concentrated on the disc player and the driving may be neglected. There is an advantage that there is no.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a disc player according to the present invention.

FIG. 2 is a flowchart showing the same operation.

[Explanation of symbols]

 (3) Loading roller (4) Loading mechanism (loading means) (5) Turntable (6) Clamper (7) Motor (9) Controller (10) Limit switch (14) Arm (15) Lifting mechanism (16) Slide Plate (16a) Engagement part (23) Motor (a) Signal (d) Disc

Claims (2)

[Claims] 1. A disk player for loading a disk to a turntable position by a loading means and chucking the disk at the table position by a chucking means, the means for detecting whether or not the chucking is completed, and the detection. When the chucking completion signal by the means is not issued within a certain time, the loading means is reversed to carry out the disk from the table position, and after the carrying-out operation, the loading means is normally rotated and the disk is again read. A disc player comprising a disc reordering command means for performing a disc reordering operation including a loading operation to a table position and a rechucking operation at the table position. 2. After the disk reinserting operation by the disk reinserting command means is completed once, the detecting means detects whether or not the chucking is completed, and the chucking completion signal by the detecting means is within a predetermined time. The disk player further comprises means for repeating the disc re-insertion operation for executing the disc re-insertion operation by the disc re-insertion instruction means again when the disc player is not issued.