JPH07282572A - Disk changer type disk reproducing device - Google Patents

Abstract

PURPOSE:To easily operate an adjusting part of a disk reproducing function part and also to keep a style presentable for appearance' sake. CONSTITUTION:A forward part of a slide tray 1 is provided with through holes 24 opposite to center holes Da of disks D through opening parts 7 of a rotary tray 3. Then, under the withdrawn state of the slide tray 1, the adjusting part for the disk reproducing function part of a semifixed resistor 19 for focus error adjustment, a semifixed resistor 20 for tracking error adjustment and a semifixed resistor 21 for disk rotating speed adjustment, etc., is arranged right below each of the through holes 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc changer type disc reproducing device in which an adjusting portion of a disc reproducing function portion can be easily adjusted.

[0002]

2. Description of the Related Art A disk changer type disk reproducing apparatus will be described. As shown in FIG.
The slide tray 1 is supported by the slide tray 1 so that the slide tray 1 can be moved forward and backward, and the disc reproducing function portion 2 is disposed so as to face the rear portion of the slide tray 1, and the rotary tray 3 is placed on the slide tray 1. At the same time, the rotary tray 3 is rotatably supported by a support arm 4 extending from the rear portion of the slide tray 1 to the central portion thereof via a pivot shaft 5, so that the rotary tray 3 has a predetermined circumferential interval. A plurality of disc mounting portions 6 are formed, and an opening 7 is provided so as to extend from the center of each disc mounting portion 6 in the radial direction. Further, the disc reproducing function portion 2 includes a pivot shaft 8
A disk rotation drive unit 9 including a swing arm 8 which is vertically rotatable about a, a spindle motor 9a provided at the tip of the swing arm 8, and a turntable 9b fixed to the rotation shaft of the motor 9a. And a disc information reading optical pickup 1 movably arranged on the swing arm 8.
0 by rotating the rotary tray 3 by a predetermined angle, the disc D placed on the desired disc placing portion 6 is opposed to the disc reproducing function portion 2, and the swing arm 8 is turned upward. As a result, the turntable 9b is brought into contact with the center of the disc D through the opening 7, and the spindle motor 9a is driven to rotate the disc D, and at the same time, the information recorded on the disc D by the optical pickup 10 is rotated. Is read and played.

The disc reproducing function section 2 is controlled by a control device 11 which is a microcomputer provided on a substrate below the slide tray 1. The control device 11 receives a signal from the optical pickup 10 and outputs an RF signal.
RF signal processing circuit 12 for generating a signal, a focus error signal and a tracking error signal, a focus servo circuit 13 for controlling the optical pickup 10 to correct the deviation of the focus of the laser beam from the pit surface, and the optical pickup 10. Is controlled by the tracking servo circuit 14 for controlling the laser beam so that the focus of the laser beam does not deviate from the center of the track, and the disk servo controller 15 so that the linear velocities of the inner and outer peripheral sides of the disk D are A spindle servo circuit 16 which is controlled to be constant, and a system controller which controls the RF signal processing circuit 12, the focus servo circuit 13, the tracking servo circuit 14, and the disk servo controller 15 based on a program recorded in a memory 17. 18 and a, also, the R
F signal processing circuit 12 and disk servo controller 15
And the like (for example, a semi-fixed resistor 19 for focus error adjustment, a semi-fixed resistor 20 for tracking error adjustment, a semi-fixed resistor 21 for disk rotation speed adjustment, etc.).
Are provided at arbitrary positions on the substrate at appropriate intervals.

In the above structure, each of the adjusting sections 19-2
1 is finally adjusted by a tool such as a driver after the assembly work of the disc reproducing apparatus is completed and immediately before the shipment. However, the slide tray 1 and the rotary tray 3 covering the respective adjusting portions 19 to 21 cause obstacles to the adjustment work. Become.

Therefore, conventionally, while the slide tray 1 is retracted, through holes are provided at positions facing the respective adjusting portions 19 to 21 of the slide tray 1, and the disc mounting portions of the rotary tray 3 are provided. A plurality of through-holes are formed in the slide tray 1 so as to face the through-holes of the slide tray 1, and the adjusting portions 19 to 21 are adjusted by operating a tool such as a driver through both upper and lower through-holes that are concentrically aligned. I have to.

[0006]

SUMMARY OF THE INVENTION In the above conventional configuration,
The rotary tray 3 is provided with a large number of through holes for adjusting the adjusting portions 19 to 21. The appearance of the through holes is bad, and the diameter of each through hole is made small so that the bad appearance is not noticeable as much as possible. Therefore, when a tool such as a screwdriver is inserted into each of the through holes to operate the adjusting units 19 to 21, it is difficult to visually check the adjusting units 19 to 21, and the adjusting work is troublesome. There are drawbacks.

In view of the above-mentioned conventional drawbacks, the present invention makes it possible to easily operate the adjusting portion of the disc reproducing function portion and to maintain the appearance of the disc in a good condition. An object is to provide a changer type disc reproducing apparatus.

[0008]

In order to achieve the above object, the present invention according to claim 1 is such that a slide tray is supported by a main body of the apparatus so as to be capable of being moved forward and backward, and is opposed to a rear portion of the slide tray. Then, a disc reproducing function unit equipped with an optical pickup for reading disc information is provided,
A rotary tray is rotatably supported by the slide tray, and a plurality of disc mounting portions are formed on the rotary tray at predetermined intervals in the circumferential direction. An opening is provided along the opening, and by rotating the rotary tray by a predetermined angle, the disc mounted on the desired disc mounting portion is made to face the disc reproducing function portion, and the optical disc passes through the opening portion. In a disc changer type disc reproducing device which reads and reproduces information recorded on a disc by a pickup, a through hole facing the center hole of the disc through the opening is formed in the front part of the slide tray. , With the slide tray retracted, the adjustment unit of the disc playback function unit is arranged directly below the through hole. It is characterized in that.

According to a second aspect of the present invention, in the first aspect of the present invention, the adjusting unit of the disc reproducing function unit includes at least a focus error adjusting semi-fixed resistor, a tracking error adjusting semi-fixed resistor, and a disc rotational speed adjustment. It is characterized by being a semi-fixed resistor.

[0010]

According to the first aspect of the present invention, a through hole is formed in the front portion of the slide tray so as to face the center hole of the disc through an opening formed in each disc mounting portion of the rotary tray. Insert the tip of the user's finger into the center hole of the disc to grip the disc and set the disc in the prescribed disc mounting portion, or conversely, place the disc in the prescribed disc mounting portion. At the time of removal, the tip of the finger portion inserted into the center hole of the disc does not enter the through hole and hit the bottom surface of the rotary tray, so that the disc can be easily set or released.

Further, since the adjusting portion of the disk reproducing function portion is arranged immediately below the through hole in a state where the slide tray is retracted, the through hole and the disk mounting portion communicating with the through hole are provided. Adjustment can be performed by operating the adjustment section with a tool such as a screwdriver through the opening.In this case, the through hole also serves as a disk gripping hole, and the diameter of the through hole allows the tip of the finger to enter easily. Since the size is increased, it is easy to visually confirm the adjustment state through the through hole, and it is possible to easily operate the adjustment unit.

Furthermore, since it is not necessary to form a large number of through holes in each disk mounting portion of the rotary tray as in the conventional case, it is possible to maintain a good appearance.

According to the second aspect, the adjusting section of the disk reproducing function section is at least a focus error adjusting semi-fixed resistor, a tracking error adjusting semi-fixed resistor, and a disk rotation speed adjusting semi-fixed resistor. Even if the focus of the laser beam deviates from the pit surface, the focus of the laser beam deviates from the center of the track, and the linear velocities of the inner and outer circumferences of the disc are different, you can easily adjust them. can do.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a five-disk changer type disk reproducing apparatus according to an embodiment of the present invention, in which a rotary tray 3 is rotatably driven in a circular recess 23 formed in an upper surface of a slide tray 1. At the same time, the rotary tray 3 is provided with five disc mounting portions 6 and the center of the disc D is formed in the front portion of the slide tray 1 through the openings 7 formed in the respective disc mounting portions 6 of the rotary tray 3. A pair of through holes 24 facing the hole Da are provided so that the diameter of the through hole 24 is set to be substantially the same as or slightly larger than the central hole Da of the disk D, and the circular recess 23 in the front portion of the slide tray 1 is provided. On the outer peripheral portion of the disk, there are formed disc-holding recesses 23a facing the respective disc mounting portions 6, and the slide tray 1 is projected forward as shown by the phantom line in FIG. In, the center hole D of the disk D
The tip of the user's own finger is inserted into a, and the disc D is gripped, and the disc D is set on the predetermined disc mounting portion 6 or vice versa. When removing the disc D, the center hole D of the disc D
Since the tip of the finger portion inserted in a enters the through hole 24 and does not hit the bottom surface of the rotary tray 3, the disc D
Can be easily set and released.

As shown by the solid line in FIG. 1, the slide tray 1
Of the both through holes 24 in a position directly below (or both of) the through holes 24, the adjustment unit of the disc reproducing function unit 2 provided on the substrate 26 (focus error in this embodiment). The adjustment semi-fixed resistor 19, the tracking error adjustment semi-fixed resistor 20, and the disk rotation speed adjustment semi-fixed resistor 21) are arranged in close proximity to each other.
As shown in FIG. 5, the tip of a tool 27 such as a screwdriver is engaged with the plus groove 28 formed in the screw portions 19a to 21a of the adjusting portions 19 to 21 through the opening 7 and the through hole 24, so that the tool 27 is aligned. Each screw part 19a-21 is rotated reversely.
By turning a, the resistance value can be adjusted. Here, for example, the focus error adjustment semi-fixed resistor 19 is adjusted to correct the deviation of the focus of the laser beam from the pit surface, and the tracking error adjustment semi-fixed resistor is adjusted to adjust the laser beam Corrects the focus being off the center of the track,
By adjusting the semi-fixed resistance for adjusting the disk rotation speed, it is possible to correct the difference in the linear velocity between the inner peripheral side and the outer peripheral side of the disk D.

According to the above construction, the through hole 24 also serves as a disk holding hole, and the diameter thereof is made large so that the tip of the finger portion can easily enter. Therefore, the adjustment state can be visually confirmed through the through hole 24. Easy to adjust, adjustment section 19 ~
21 can be easily operated, and since it is not necessary to form a large number of through holes in each disk mounting portion 6 of the rotary tray 3 unlike the conventional case, a good appearance can be maintained. be able to.

Since the structure other than the above is almost the same as that of the conventional example shown in FIG. 4, the same parts are designated by the same reference numerals and the description thereof will be omitted.

In the above embodiment, the five disc changer type disc reproducing device is shown, but the present invention can be applied to other disc changer type disc reproducing devices (for example, three disc changer type disc reproducing device). Further, although the focus error adjusting semi-fixed resistor 19, the tracking error adjusting semi-fixed resistor 20, and the disk rotation speed adjusting semi-fixed resistor 21 are shown as the adjusting parts, other adjusting parts are also provided directly below the through hole 24. It may be arranged and the adjustment may be performed. Further, although the adjusting parts 19 to 21 are arranged directly below the through hole 24 on the left side in FIG. 1, they may be arranged directly below the through hole 24 on the right side,
Further, the through holes 24 may be dispersed and arranged.

[0019]

According to the first aspect of the present invention, with the slide tray retracted, the through hole formed in the front portion of the slide tray 1 and the opening formed in the disk mounting portion of the rotary tray. Through the through, it is possible to operate and adjust the adjustment part of the disc playback function part with a tool such as a screwdriver.In this case, the through hole also serves as a disc gripping hole, so that the tip of the finger part can easily enter. Since the caliber is large, it is easy to visually confirm the adjustment state through the through hole, and it is possible to easily operate the adjustment unit.

Further, since it is not necessary to form a large number of through holes in each disk mounting portion of the rotary tray as in the conventional case, it is possible to maintain a good appearance.

According to the second aspect, the adjusting section of the disk reproducing function section is at least a focus error adjusting semi-fixed resistor, a tracking error adjusting semi-fixed resistor, and a disk rotational speed adjusting semi-fixed resistor. Even if the focus of the laser beam deviates from the pit surface, the focus of the laser beam deviates from the center of the track, and the linear velocities of the inner and outer circumferences of the disc are different, you can easily adjust them. can do.

[Brief description of drawings]

FIG. 1 is a plan view of a disc changer type disc reproducing device according to an embodiment of the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a perspective view of an essential part showing an adjustment state of the adjustment part.

FIG. 4 is a schematic explanatory view showing a conventional example.

[Explanation of symbols]

 1 Slide Tray 2 Disc Playback Function Section 3 Rotary Tray 6 Disc Placement Section 7 Opening Section 9 Disc Rotation Drive Section 10 Optical Pickup 19 Semi-fixed Resistor for Focus Error Adjustment (Adjustment Section) 20 Semi-fixed Resistance for Tracking Error Adjustment (Adjustment Section) ) 21 disk rotation speed adjustment semi-fixed resistance (adjustment part) 24 through hole D disk Da disk center hole S device body

Claims (2)

[Claims] 1. A slide tray is supported on the main body of the apparatus so as to be able to move forward and backward, and a disc reproducing function portion provided with an optical pickup for reading disc information is arranged facing the rear portion of the slide tray. A rotary tray is rotatably supported by the slide tray, and a plurality of disc mounting portions are formed on the rotary tray at predetermined intervals in the circumferential direction. Apertures are pierced along, and by rotating the rotary tray by a predetermined angle,
A disc changer type disc reproduction in which a disc mounted on a desired disc mounting portion is opposed to a disc reproducing function portion, and information recorded on the disc is read and reproduced by an optical pickup through the opening. In the device, at the front of the slide tray,
A through hole is formed through the opening so as to face the center hole of the disc, and an adjusting portion of the disc reproducing function portion is arranged immediately below the through hole in a state where the slide tray is retracted. Disc changer type disc player. 2. The adjusting unit of the disc reproducing function unit is at least a semi-fixed resistor for focus error adjustment, a semi-fixed resistor for tracking error adjustment, and a semi-fixed resistor for disc rotation speed adjustment. The described disc changer type disc reproducing device.