JPH067498Y2 - Disc changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention relates to a disc changer in which a predetermined disc is selected from a plurality of discs and the disc is reproduced in a disc reproducing section.

“Prior Art” Recently, a disc player provided with a disc changer mechanism, that is, a disc changer has been put into practical use in an on-vehicle audio device or the like.

This disc changer is composed of a magazine loading section to which a magazine containing a plurality of discs is loaded, a disc playback section to play back the discs, and the like. The disk is searched by, a predetermined disk is loaded from the magazine and carried to the disk reproducing section, and this disk is reproduced.

[Problems to be solved by the invention] By the way, the above-mentioned conventional disc changer is generally used for a compact disc (hereinafter referred to as a CD). In addition to the usual disc having a diameter of 12 cm,
There is a so-called CD single disc with a diameter of 8 mm. And when playing this CD single,
It is attached to an adapter called a single adapter and then set in a magazine for playback. However, this CD
The operator may mistakenly set only the single adapter when setting the single in the magazine. And when this single adapter is loaded,
The disc is set in the disc reproducing section, and operations such as focus search are performed. Then, it is detected that the CD single is not attached to this single adapter only after it is detected that the focus servo is not applied.

The present invention has been made under such a background, and provides a disc changer capable of detecting that a single adapter is the only one immediately after loading when the single adapter is mistakenly set in the magazine. The purpose is to

"Means for Solving the Problem" The present invention comprises a magazine in which a plurality of disks are stored, a magazine mounting section in which the magazine is mounted, and a disk reproducing section in which a predetermined disk is reproduced. Of the two types of discs with different diameters, the disc with the smaller diameter is used as a ring-shaped adapter with the same outer diameter as the disc with the larger diameter and the inner diameter of the disc with the smaller diameter. In a disc changer that fits and stores in a predetermined position of a magazine, loads a disc with a small diameter fitted in an adapter from a predetermined position and reproduces the disc in a disc reproducing unit, a magazine mounting unit and a disc reproducing unit. A detection means for detecting that a disc with a small diameter is not fitted in the adapter is provided between the two, and the output signal of the detection means is input. In the case of being damaged, the adapter is unloaded at a predetermined position, and a control circuit for indicating that only the adapter is provided is provided.

[Operation] According to the present invention, when the operator of the disc changer operates the loading key or the like with only the adapter stored in the magazine, the control circuit performs a predetermined operation of loading the adapter from the magazine. .
As a result, when the adapter is pulled out from the magazine and reaches between the magazine mounting section and the disk reproducing section, the adapter is detected by the detecting means and a signal is output. As a result, the control circuit unloads the adapter to the predetermined position of the magazine and displays that only the adapter is available.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are a block diagram and a perspective view showing the structure of a disc changer and a magazine used in the disc changer according to an embodiment of the present invention, respectively. In these figures, ₁₁ to ₁₆ are CDs,
2 is a magazine in which CDs _{1 1} to ₁₆ are stored, 3 is a bottom plate of the disc changer main body, 4 is a magazine mounting portion in which the magazine 2 is mounted, 5 is a magazine table fixed to the bottom plate 3, 6 ₁ and 6 ₂ Is a guide piece bent and formed on both left and right edges of the magazine table 5. When the magazine 2 is mounted, the guide pieces 6 ₁ and 6 _{2 on} both edges of the magazine table 5 guide both sides of the lower end of the magazine 2. To be done.

Further, 7 is a magazine eject mechanism provided below the magazine table 5 for ejecting the magazine 2, and 8 is a CD
This is a disc reproducing unit for reproducing a predetermined CD from among 1 ₁ to ₁₆ . In the disk reproducing section 8, 9 is a clamper for clamping a CD, 10 is a spindle motor for rotationally driving the CD, 11 is an optical pickup for reading digital information recorded by pits on a signal recording surface of the CD by using a laser beam, 12 is this optical pickup 11
A feed motor 13 for moving is a RF amplifier that generates and outputs a focus error signal and a tracking error signal from the read signal output from the optical pickup 11, and amplifies and outputs the read signal.

Further, 14 is a data processor that performs processing such as demodulation of a signal output from the RF amplifier 13 and correction and correction of code errors, and 15 is DA conversion that converts a digital signal output from the data processor 14 into an analog audio signal. The reference numeral 16 designates an audio circuit for performing various operations such as amplification and sound quality control on the audio signal, and the output signal of the audio circuit 16 is an audio output terminal 17
Is output to an external speaker or the like via. Reference numeral 18 denotes a system controller, which stores a CPU (central processing unit) and a program used in the CPU.
OM, RAM for data storage and I / O (input / output)
It consists of ports and. Reference numeral 19 denotes focus adjustment control (focus servo) and tracking adjustment control (tracking servo) of the optical pickup 11 using the focus error signal and the tracking error signal output from the RF amplifier 13 under the control of the system controller 18. This is a servo processor that performs feed adjustment control of the feed motor 12 (feed servo) and constant linear velocity control of the spindle motor 10 (spindle servo).

In addition, 20 is a disk transfer mechanism for loading a predetermined CD among the CDs _{1 1} to ₁₆ from the magazine 2 and setting it in the disk reproducing section 8, 21 is a system controller 18
Drive unit for driving the magazine eject mechanism 7 and the disc transfer mechanism 20 under the control of
Reference numeral 2 is an operation panel operated by the operator to cause the disc changer to perform various functions, and reference numeral 23 is a display unit for displaying the operating state of the disc changer and error messages.

Next, the structure of the disk transfer mechanism 20 is shown in FIG. In this figure, 24 is a support plate provided on the disc transfer mechanism 20, 25 ₁ and 25 ₂ are guide pins provided on the support plate 24, and 26 is a disc ejection member supported by the guide pins 25 ₁ and 25 _2. Yes, C stored in magazine 2 by moving linearly in the ef direction in the figure
Eject and install D.

Further, 27 is a drive device for driving the disc ejecting member 26, 28 is a drive device 27 for driving the magazine 2
Is an upper roller that draws in a predetermined CD from a predetermined position, and both ends of the roller 28 are supported by swing levers 29. The swing lever 29 is attached to the pin 29.
It is swingably supported with a as a fulcrum. Also, 30
Is a lower roller that is rotatably supported, and 31 is a spring that urges the swing lever 29 downward, and this urging force sets the disk clamping force between the roller 28 and the roller 30. . Further, a projecting portion 28 a that projects from the swing lever 29 is provided at the end of the roller 28. On the other hand, as shown in FIG. 2, a roller regulating piece 32 is provided on the bottom plate 3, and when the disc transfer mechanism 20 descends to the disc reproducing portion 8, this roller regulating piece 32 is provided.
The projecting portion 28a of the roller 28 hits against the swing lever 29, and the roller 28 escapes relatively upward with respect to the descending disc transfer mechanism 20, and the disc holding force by the pair of rollers 28 and 30 is increased. It will be canceled.

In addition, in FIG. 3, 33 _to 333 the guide holes 3
Reference numerals 4 _{1 to} 34 ₃ are female screw holes adjacent to the guide holes 33 _{1 to} 33 ₃ .

In the second figure, 35 ₁ to 35 ₃ is a lifting mechanism that drives the disk transfer mechanism 20 in the vertical direction. Each of the lifting mechanisms 35 _{1 to} 35 ₃ includes a guide shaft 36 ₁ to
36 _3, and a lifting screw 37 _{1-37 3} and the gear 38 ₁ to 38 ₃ which is fixed to the lifting screw 37 _{1-37 3.} Then, the elevating mechanism 35 _{1-35 3} of the guide shaft 36 _{1-36 3} is inserted into the guide hole 33 _to 333 provided in the disk transport mechanism 20 respectively, also each of the internal thread hole lifting screw 37 _{1-37 3} 34 ₁
It is screwed to ~ 34 ₃ .

Furthermore, the gear 38 ₁ to 38 ₃ which are provided to each of these lifting mechanism 35 _{1-35 3} are each synchronized by a second view of the bottom plate 3 of the elevation driving mechanism provided on the lower surface (not shown) It is designed to be driven to rotate.

4 is a plan view of the disc changer. In this figure, parts corresponding to the parts in FIG. 2 are assigned the same reference numerals and explanations thereof are omitted. In this figure, 3
9 is a single adapter stored in magazine 2, 40-
42 is a sensor that is turned on when the single adapter 39 or the like passes above and blocks light.

In such a configuration, the system controller 18 has the single adapter 39 housed in the magazine 2 of FIG.
The operation of loading the disc into the disc reproducing portion 8 will be described with reference to the flowchart of FIG. The operator of this disc changer has a CD installed on the operation panel 22.
When a key or the like for loading is loaded, the system controller 18 first proceeds to the process of step S1 and raises the disk transfer mechanism 20. That is, a disc transfer mechanism raising command is output to the automatic change mechanism drive unit 21. Auto change mechanism drive unit 2
1 receives this command and drives a lifting drive mechanism (not shown). As a result, the gears 38 _{1 to} 38 ₃ are respectively driven in the i direction of FIG. 2, and the lifting mechanisms 35 _{1 at} the three positions in FIG.
35 ₃ of each of the lifting screw 37 _{1-37 3} are respectively synchronized to rotate the i direction, disk transfer mechanism 20 is raised. Then, the process proceeds to step S2. Step S2
Then, the operation of stopping the disk transfer mechanism 20 is performed.
That is, a disc transfer mechanism stop command is output to the automatic change mechanism drive unit 21. In response to this command, the auto change mechanism drive unit 21 raises the disc transfer mechanism 20 to a predetermined position where the single adapter 39 of the magazine 2 is stored and stops it. And step S
Go to 3. In step S3, the operation of loading the single adapter 39 is performed. That is, the disc loading command is output to the automatic change mechanism drive unit 21. Upon receiving this command, the auto change mechanism drive unit 21 drives the drive mechanism 27. As a result, the disc discharging member 26 moves in the f direction in FIG. 3 and the roller 28 rotates in the l direction. As a result, the single adapter 39 is pulled out from the magazine 2 and held between the rollers 28 and 30, and the rotation force of the roller 28 causes f to move.
Move in the direction. Then, the process proceeds to step S4. In step S4, it is determined whether or not the sensor 41 shown in FIG. 4 is turned on by the disc ejecting member 26 pulling out the single adapter 39 from the magazine 2 and moving it in the f direction. If the result of this determination is "NO",
The same judgment is repeated until "YES". Next, the determination result of step S4 is “YES”, that is, the single adapter 39 is above the sensor 41 (position a in FIG. 4).
Immediately after arriving at, the process proceeds to step S5. Step S
At 5, it is determined whether the sensor 40 is on. And
If the determination result is "NO", that is, if the sensor 40 is not on at the moment when the sensor 41 is turned on, it is determined that only the single adapter 39 is loaded, and the process proceeds to step S6. In step S6, the operation of unloading the single adapter 39 is performed. That is, the disc unloading command is output to the automatic change mechanism drive unit 21. Upon receiving this command, the auto change mechanism drive unit 21 drives the drive mechanism 27 in the direction opposite to that in step S3. As a result, the disc discharge member 26 moves in the direction e in FIG. 3 and the roller 28 rotates in the direction m. This allows
The single adapter 39 is unloaded at a predetermined position in the magazine 2. Then, the process proceeds to step S7. In step S7, "single adapter only" or the like is displayed on the display unit 23, and then the series of operations is ended.

On the other hand, when the result of the determination in step S5 is "YES", that is, the reference numeral 39 indicates not only a single adapter, but a single adapter with a CD single attached or a normal diameter of 12 cm.
CD (hereinafter, these are collectively referred to as the disc 43)
If the sensor 40 is on at the moment when the sensor 41 is turned on, the process proceeds to step S8. In step S8, when the system controller 18 detects that the sensor 42 is turned on and the sensors 40 and 41 are both turned off, that is, the disk 43 has reached the position b in FIG. Outputs the disc ejection member stop command. Upon receipt of this command, the auto change mechanism drive unit 21 stops the disc ejection member 26. Then, the process proceeds to step S9. Step S9
Then, the operation of lowering the disk transfer mechanism 20 is performed.
That is, the disc transfer mechanism lowering command is output to the automatic change mechanism drive unit 21. Upon receipt of this command, the auto change mechanism drive unit 21 drives the elevator drive mechanism (not shown) in the direction opposite to that in step S1. Each Thus, the gear 38 ₁ to 38 ₃ are respectively driven to g direction of FIG. 2, each of the lifting screw 37 _{1-37 3} lifting mechanism 35 _{1-35 3} three of FIG. 2 in synchronization It rotates in the g direction and the disc transfer mechanism 20 descends. As a result, the disc 43 is set on the turntable of the disc reproducing section 8 and clamped by the clamper 9. Further, the roller 28 is lifted by the roller regulating piece 32 provided on the bottom plate 3 and separated from the disc 43. Then, a series of work is completed.

As described above, when only the single adapter 39 is stored at the predetermined position of the magazine 2, it is detected that only the single adapter 39 is present immediately after the start of loading. As a result, this single adapter 39 is unloaded, and it is displayed that there is only the single adapter 39. Therefore, the operator of this disc changer can quickly notice this mistake.

Incidentally, in FIG. 4, the arrangement with the sensors 40 and 41 may be such that the sensor 42 is close to the magazine 2 and the single adapter 39 does not turn on at the same time. Further, by disposing the sensor 40 near the roller 28, it is possible to reliably detect the end of the unloading of the disc. That is, when the end of unloading is detected only by the sensors 41 and 42, the end of unloading is judged to be completed and the disc transfer mechanism 20 moves up and down even though unloading of the disc is not completely finished. Things can happen. And in this case, the disc is the roller 2
Since the disk transfer mechanism 20 moves up and down while being sandwiched between 8 and 30, the disk may be damaged or the entire apparatus may be out of control. Therefore, by disposing the sensor 40 in the vicinity of the roller 28, the disc is moved to the roller
Since the passage of 8 and 30 is detected, the above situation does not occur.

[Advantage of Invention] As described above, according to this invention, when only the adapter is mistakenly set in the magazine, it is possible to detect that only the adapter is present immediately after the loading is started. Moreover, in that case, since the adapter is unloaded and only the adapter is displayed, the operator of this disc changer can quickly notice this mistake and immediately deal with this situation. There is.

[Brief description of drawings]

FIG. 1 is a block diagram showing the structure of a disc changer according to an embodiment of the present invention and a magazine used in the disc changer, and FIG. 2 is a diagram showing a disc changer according to an embodiment of the present invention and a magazine used in the disc changer. FIG. 3 is a perspective view showing the structure, FIG. 3 is a perspective view of the disk transfer mechanism 20, FIG. 4 is a plan view of the disk changer, and FIG. 5 is a flowchart showing the operation of the system controller 18. 18 ... System controller, 40, 41 ... Sensor.

Claims (1)

[Scope of utility model registration request] 1. A magazine comprising a plurality of discs, a magazine mounting portion for mounting the magazine, and a disc reproducing portion for reproducing a predetermined disc. Inside, the smaller diameter disc has the same outer diameter as the larger diameter disc, and
The disc having a smaller diameter is fitted into a ring-shaped adapter having an inner diameter that is the same as the diameter of the disc, and the disc is stored at a predetermined position in the magazine, and the diameter fitted to the adapter from the predetermined position is small. In a disc changer for loading a different disc and reproducing it in the disc reproducing unit, it is detected at the time of loading that the disc having the smaller diameter is not fitted to the adapter between the magazine mounting unit and the disc reproducing unit. And a control circuit for unloading the adapter to the predetermined position and displaying only the adapter when an output signal of the detecting means is input. A disc changer.