JP5808567B2 - Disk unit - Google Patents

Description

  The embodiment of the present invention relates to a disk device capable of reliably detecting the preceding disk when the subsequent disk is continuously pushed in during the preceding disk ejection process.

  In the conventional disk device, a user's erroneous insertion such as inserting two disks in the driver unit in succession is judged as abnormal and the abnormality is notified.

  Normally, even when a succeeding disk is inserted in the process of ejecting the preceding disk, the ejecting process is activated and the preceding disk can be ejected. However, even if the previously inserted disc is being ejected, the user may continue to push the second disc depending on the user. In this case, if it is determined that the succeeding disk is normally inserted, the presence of the preceding disk may fall into an undetectable dead point.

  That is, there is a problem that the driver unit ends the disk ejection operation when it is determined that the succeeding disk is inserted normally even though the preceding disk is left in the driver unit. there were.

JP 2001-31850 A

  The conventional technology has a problem that, even though the preceding disk is left in the driver unit, it is determined that the succeeding disk is inserted normally, and the ejection operation of the preceding disk ends. there were.

  The problem to be solved by the invention is to provide a disk device capable of detecting the presence of a preceding disk even when the subsequent disk is continuously pushed in.

According to the embodiment, a housing having a disk insertion slot, a transfer unit that guides a disk inserted through the disk insertion slot to a loading position, and discharges the disk from the loading position through the disk insertion slot, When the first disk is inserted through the disk insertion slot and the drive unit that is provided in the casing and rotationally drives the disk at the loading position, it is inserted into the casing prior to this. When the time for detecting the presence of the second disk is longer than a preset time, a detecting means for detecting that the second disk is present in the casing , and the detecting means are in the casing. If two disks is detected to be present, the second storage means for storing information indicating said housing presence of a disk, the storage means is the second di To indicate the presence of a click, after said transfer unit controlled by discharging the first disk, the controls the transfer unit again so as to discharge the second disks present in the housing and a control unit for executing re-emission process.

It is a perspective view for demonstrating the external appearance of the whole structure of one Embodiment regarding a disc apparatus. 1 is a plan view for explaining a schematic configuration of a main part. It is a block diagram for demonstrating the drive unit and control system of a disc apparatus. It is a block diagram for explaining reading or recording of a disk device and a control system. It is explanatory drawing for demonstrating the process which detects the precedent disk in discharge processing reliably. It is explanatory drawing for demonstrating the process following the process of FIG. It is explanatory drawing for demonstrating the process following the process of FIG. 5 and FIG. It is explanatory drawing for demonstrating the 1st example of a detection means to detect presence of a prior | preceding insertion disk. It is explanatory drawing for demonstrating the 2nd example of a detection means to detect presence of a prior insertion disk. It is explanatory drawing for demonstrating the 3rd example of a detection means which detects presence of a prior insertion disk. It is explanatory drawing for demonstrating the example of a 4th detection means to detect presence of a prior insertion disk.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

1 to 4 are for explaining an embodiment relating to a disk device. FIG. 1 is a perspective view showing the external appearance of the overall structure of the disk device, and FIG. 2 is a diagram illustrating the schematic structure of the main part of FIG. FIG. 3 is a block diagram for explaining the drive unit and the control system of the disk device, and FIG. 4 is a block diagram for explaining the reading or recording of the disk device and the control system.
In FIG. 1, the disk device 100 houses a drive unit 11 in a housing 10. The drive unit 11 is supported by an elastic member such as a damper or a spring provided in the housing 10. A disk insertion slot 12 is formed on the front surface of the casing 10, and the disk D is inserted into the casing 10 or ejected from the casing 10 through the disk insertion slot 12. Can do. The insertion direction of the disk D is indicated by an arrow A. Examples of the disk D include a CD (Compact Disc), a DVD (Digital Versatile Disc), and a CD-ROM.

  The drive unit 11 shown in FIG. 2 with the top cover of the housing 10 removed is attached to a base member 13 that is elastically supported by a plurality of dampers and the like. A support plate (not shown) is fixed to the upper surface of the base member 13 on the disk insertion port 12 side, and a guide top (not shown) is integrated with the lower surface of the support plate using a fixing tool. The support plate and the guide top constitute a guide member, and a pair of auxiliary rollers (not shown) are rotatably supported on the left and right sides of the guide member. The auxiliary roller has a cylindrical shape formed of synthetic resin.

  The drive unit 11 is provided with a turntable 14 that is rotated by a spindle motor at a substantially central portion of the base member 13. The turntable 14 is provided with a catching claw 101 (FIG. 10). When the center hole Da of the disk D enters the turntable 14, the claw part 101 clamps the disk D. The catching claw 101 has a structure that detects that the disc D is placed on the turntable 14 and clamps the disc D by opening or closing the claw portion.

  A transfer unit 15 for inserting and ejecting the disk D is provided on the upper surface of the front portion (right side in the drawing) of the base member 13. The transfer unit 15 inserts the disk D from the disk insertion opening 12 to the turntable 14 (drive position), or vice versa, and discharges the disk D from the turntable 14 to the disk insertion opening 12.

The transfer unit 15 includes a transfer frame 16 that is elongated in parallel with the disc insertion opening 12. The transfer frame 16 is provided with a roller shaft 17 in parallel, and both ends of the roller shaft 17 are rotatable on the side surfaces of the transfer frame 16. It is supported. A transfer roller 18 formed of a material having a high friction coefficient such as natural rubber is provided on the outer periphery of the roller shaft 17, and the transfer roller 18 is disposed with a gap in the axial direction. The transfer unit 15 rotates (revolves) between the standby position and the loading position around the fulcrum shaft 19. The transfer roller 18 is made of rubber and is provided perpendicular to the conveying direction of the disk D, has a taper shape whose diameter decreases toward the center, and rotates in the forward and reverse directions by the power of the motor. Insert or eject D.

  Two horizontally long holes (not shown) are provided in parallel to the disk insertion slot 12 below the disk insertion slot 12 on the front surface of the housing 10, and the inner surface of each hole extends along each hole. Sliders 20a and 20b are attached. Switches SW1 and SW2 and switches SW3 and SW4 that are turned on and off by sliding of the sliders 20a and 20b are attached to the transfer frame 16.

  The switches SW1 and SW2 are switches that detect that the sliders 20a and 20b are in the initial positions, and are turned on when the sliders 20a and 20b are in the initial positions. The switch SW3 is a switch that detects that the disk D is ejected to a predetermined position when the disk D is inserted to a predetermined position or when the disk D is ejected. The switch SW4 is a switch that detects the outermost periphery of the disk D.

  The switches SW1 and SW2, the sliders 20a and 20b, and the guide pins constitute a first disk detection unit that detects insertion and ejection of the disk D. Further, the photosensors Sa and Sb constitute a second disc detection unit that detects the insertion of the disc D before the first detection unit and detects the ejection of the disc D later than the first detection unit. To do.

  Further, a photo sensor S for detecting whether the disk D is loaded at the driving position is disposed on the inner surface of the housing 10 on the opposite side of the disk insertion slot 12. The photosensor S determines that the disc D is loaded in the driving position by determining that the detector 21a of the detection lever 21 is turned on by being pushed by the side surface of the disc D and rotated in the direction of the arrow. Constitutes a third detector for detecting.

  Here, a case where the disk D is inserted into the housing 10 will be described. When the disk D is inserted from the disk insertion port 12, the photosensors Sa and Sb are blocked from passing light by the disk D, and then the sliders 20a and 20b are moved to the switch SW1, as the guide pins are opened away from each other. SW2 is turned off, and insertion of the disk D is detected.

  When the guide pin is further opened and the switch SW3 is turned on, the transfer unit driving motor is driven, and the transfer roller 18 of the transfer unit 15 at the standby position is rotated in the insertion direction and inserted into the housing 1.

  When the outermost periphery of the disk D is detected by the switch SW4, the transfer unit driving motor is restarted, and the transfer unit 15 is rotated about the fulcrum shaft 19 to the loading position. The transfer roller 18 continues to rotate while the disk D is rotated to the position where the disk D is loaded with the turntable 14. The disk D is inserted into the disk by the rotation (revolution) of the transfer unit 15 and the rotation of the transfer roller 18. The central convex portion of the turntable 14 enters the center hole Da of the disc from the mouth 12 and is clamped by the catching claw at the same time.

  The disk D thus clamped on the turntable 14 is rotationally driven by the turntable 14, and the signal recorded on the disk D is read by the optical head, or the signal is recorded on the disk D.

  On the other hand, when the disk D that has been reproduced or recorded is ejected, the spindle motor stops and the rotation of the turntable 14 stops. Then, the clamp of the disk D by the turntable 14 is released, the drive unit 11 descends toward the bottom surface, and the disk D comes out of the turntable 14. Thereafter, the transfer unit 15 moves from the standby position to the loading position, and the transfer roller 18 is rotated in the discharge direction by the transfer unit driving motor. Further, by moving the transfer unit 15 to the standby position, the disk D moves in the discharge direction, and is discharged from the disk insertion port 12 by the rotation of the transfer roller 18.

  In the middle of ejecting the disk D, the sliders 20a and 20b interlocked with the guide pins are pushed by the disk D and opened away from each other. Then, when the disk D is ejected, the guide pins return to the initial positions. When the user removes the disk D in this state, the photosensors Sa and Sb transmit light and detect the ejection of the disk D.

Therefore, by the guide pins (slider 20 a, 20 b) returns to the initial position, the discharge of the disk D switches SW1, SW2 is turned on is detected, the photo sensor Sa with a slight delay, the discharge of the disk D by Sb Detected.

  In this way, the disk D inserted from the disk insertion opening 12 is moved to the loading position inside the housing 10 by the transfer unit 15, and then rotated by the drive unit 11, and data reading or disk D is performed by the optical pickup 22. The system controller 33 controls the whole so as to perform recording.

  3 and 4 are block diagrams of the control system of the disk device, respectively. FIG. 3 is a block diagram of the drive unit and the control system, and FIG. 4 is a block diagram of the reading or recording and control system. ing. In the disk apparatus, a system controller 33 constituted by a microcomputer controls the overall operation.

  In FIG. 3, the disk D is placed on the turntable 14 and rotated at a constant linear velocity by the spindle motor 31. In the process of loading the disk D into the drive unit 11, detection information from the photosensors Sa, Sb, S and switches SW 1 to SW 4 is input to the detection unit 32. The detection unit 32 inputs the detected information to the system controller 33, and here outputs a control signal based on the detection information. The system controller 33 also receives operation information from the operation unit 34 for operating the disk device 100 such as reproduction and recording, and also outputs a control signal based on a command from the operation unit 34.

  Further, the nonvolatile memory 35 is connected to the system controller 33 and stores misdiagnosis information for analyzing the cause of the error when an error occurs due to, for example, erroneous insertion of the disk D.

  A sled motor 38 is connected to the system controller 33 via a servo controller 37. The sled motor 38 has a role of moving the optical pickup 22 in the radial direction of the disk D when the disk D is loaded on the turntable 14 and is reproduced. In addition, the thread motor 38 drives the transfer roller 18 when the disk D is inserted. It also has a role of revolving control of the transfer roller 18 for inserting and discharging the disk D.

In FIG. 4, the disk D is rotated at a constant linear velocity by the spindle motor 31, and information is read from the disk D or recorded on the disk D by the optical pickup 22. The optical pickup 22 is moved in the radial direction of the disk D by the thread motor 38. The servo controller 37 controls the rotation of the spindle motor 31 under the control of the system controller 33, and also controls the tracking control, focus control, and driving of the sled motor 38 of the optical pickup 22.

  Reference numeral 39 denotes an RF amplifier, which amplifies an RF signal corresponding to information read by the optical pickup 22 and transmits it to the next stage. Further, the RF amplifier 39 separates the focus control signal and the tracking control signal from the RF signal and sends these control signals to the servo controller 37.

  Reference numeral 40 denotes a digital signal processing unit, which digitizes the RF signal output from the RF amplifier 39 and performs demodulation processing and error correction processing of the digitized signal. A memory 41 such as an SDRAM is connected to the digital signal processing unit 40, and file information such as MP3 compressed music data is temporarily stored in the memory 41 so as to be readable and writable. The file information read from the memory 41 is supplied to the decoder 42. The decoder 42 decompresses, for example, MP3 compressed music data and converts it into uncompressed normal music data.

  The system controller 33 is supplied with detection results from the photosensor S that detects the clamp of the disk D and the photosensors Sa and Sb that detect the insertion and ejection of the disk D, and further slides the sliders 20a and 20b. The outputs of the switches SW1 and SW2 and the switches SW3 and SW4 that switch accordingly are supplied.

By the way, there are not a few cases where the ejection is normally completed even though the preceding disk D is left in the housing 10. The drive unit 11 in this case, it is determined that the discharge of the previous row disc is completed, the preceding disc remains left in the drive unit 11, a problem occurs.

  Therefore, in this embodiment, it is possible to reliably detect the disk of the preceding disk D in the case where the pushing for continuing to insert the succeeding disk D ′ into the drive unit 11 is continued during the ejection process of the preceding disk D. To do.

  Hereinafter, a process for reliably detecting the disk of the preceding disk D that is being ejected even when the succeeding disk D 'is pushed in will be described with reference to FIG. 2 using the flowcharts of FIGS. Detailed operations such as other retry operations are omitted.

  Before explaining FIGS. 5 to 7, referring to FIGS. 8 to 11, in order to prevent the insertion of a disk inserted later in the process of discharging the disk previously inserted into the housing, First to fourth examples of detection means for detecting the presence of an inserted disc will be described.

FIG. 8 shows a first example of detection means for detecting the presence of a previously inserted disc. When the insertion of the preceding disk D is completed and the switch SW4 is turned off from on, this on-time usually ends in 500 ms, but the succeeding disk D ′ overlaps the disk D and the switch SW4 while the switch SW4 is on-time. When the ON time of the disc becomes 1 s or longer, it is possible to prevent the insertion of two discs by determining that there are two discs and switching to the ejection operation of the preceding disc D.

  FIG. 9 shows a second example of the detecting means for detecting the presence of the pre-inserted disk. When the photosensor S that detects whether the preceding disk D has been moved to the loading position is switched from the detection state to the non-detection state to detect the completion of the insertion of the disk D, and any of the switches SW1 to SW4 is detected Therefore, it is possible to prevent the insertion of two discs by determining that there are two discs and switching to the ejection operation of the preceding disc D.

  FIG. 10 shows a third example of the detecting means for detecting the presence of the previously inserted disc. When the preceding disk D is clamped by opening the catching claw 101 of the turntable 14 from the closed state and the transfer unit 15 returns to the standby position from the position where the disk D is loaded, two disks are It is possible to prevent the insertion of two discs by determining that the operation load is increased due to the insertion of the disc and switching to the disc D ejection operation.

  FIG. 11 shows a fourth example of detection means for detecting the presence of a pre-inserted disk. When the leading disk D is clamped by opening the catching claw 101 of the turntable 14 from the closed state and the transfer unit 15 is returned from the loading position to the standby position, if any of the photosensors Sa and Sb is detected, By determining that the operation load is increased due to the insertion of two discs and switching to the disc D ejection operation, it is possible to prevent the insertion of two discs.

  Next, in FIG. 5, when the disc D is inserted, the flag for the disc two-insertion information is set to 0 (S1). Here, the flag 0 indicates that one disk is inserted. In step S2, the transfer roller 18 starts rotating (forward rotation). If it is detected whether the slider 20b is slid and the switch SW4 is turned on (S3), a detection timer for the switch SW4 is started (S4). Next, revolution (forward rotation) of the transfer unit 15 is started (S5). After the start of revolution of the transfer unit 15 in step S5, it is determined in step S6 whether the switch SW4 has detected the subsequent disk D '. If the switch SW4 is not detected, the detection timer of the switch SW4 is stopped in step S7.

  In the next step S8, it is detected whether or not the revolution (forward rotation) of the transfer roller 18 has been completed. If the detection is completed, the revolution is stopped (S9), and any of the switches SW1 to SW4 is followed in step S10. It is determined whether the disk D ′ is detected. If any of the switches SW1 to SW4 has not been detected, it is determined in step S11 whether the photosensor S has detected loading of the disk D into the turntable 14. When the photosensor S detects, the rotation of the transfer roller 18 is stopped (S12), the disk D is clamped by the chucking claw 101 (S13), and the process proceeds to step S14 in FIG.

  When an operation command for ejecting the disk D is issued, the revolution (reverse rotation) of the transfer roller 18 is started in step S14. In step S15, it is determined whether the transfer roller 18 has returned to the home (standby position). If it is determined that the transfer roller 18 has returned, the revolution of the transfer roller 18 is stopped (S16). Next, it is detected whether or not the photosensors Sa and Sb are succeeding discs D ′ (S17). If no disc D ′ is detected, a play position transition process of the disc D is performed (S18). Complete transport of D.

  In step S6 of FIG. 5, when the switch SW4 is turned on, the process proceeds to step S19, where it is determined whether the timer time started when the switch SW4 is turned on has elapsed, and if not, the process returns to step S6. If it is, the flag 1 for the two-disc insertion information is set (S20), and the process proceeds to step S21 in FIG. Here, the flag 1 indicates that two discs are inserted.

  FIG. 7 shows a flow of performing abnormal disk ejection processing when there is a possibility that two disks are left in the disk device.

  In step S21, the disc D 'determined to be an abnormal disc is ejected, and in step S22, the photosensors Sa and Sb determine whether the disc ejected in step S22 has been removed. If it has been removed, it is determined in step S23 whether or not the flag for the two-disc insertion information has become zero. If it is determined that the flag 0 is set, the discharging operation of the preceding disk D determined to be abnormally discharged is terminated.

  In step S23, when it is determined that the disk two-sheet insertion information flag is not 0, it is determined that two disks are inserted, and the rotation (reverse rotation) of the transfer roller 18 is started (S24). (Normal rotation) is started (S25). It is detected whether or not the revolution (forward rotation) of the transfer roller 18 has been completed (S26). If the detection is completed, the revolution is stopped (S27), and the rotation of the transfer roller 18 is stopped in step S28. The process of steps S24 to S28 is for performing an operation of operating the transfer roller 18 to check whether there is any disc left in the drive unit 11.

  In step S29, if the photosensors Sa and Sb detect that there is a disk, the preceding disk ejection process determined to be abnormal ejection is performed (S30), and the ejection operation of the preceding disk D determined to be abnormal ejection is performed. finish. The disk left in the drive unit 11 is re-ejected by the process in step S30, and the abnormal disk is awaiting removal. In step S31, when it is detected by the photosensors Sa and Sb that there is no disk, the discharging operation of the preceding disk D determined to be abnormally discharged is terminated.

  In step S29, when the photosensors Sa and Sb determine that there is no disk, the rotation (reverse rotation) of the transfer roller 18 is started (S32), and the rotation (reverse rotation) of the transfer roller 18 is started (S33). It is detected whether or not the revolution (forward rotation) of the transfer roller 18 has been completed (S34). If the detection is completed, the revolution is stopped (S35), and the rotation of the transfer roller 18 is stopped in step S36. Steps S32 to S36 are for confirmation when the photosensors Sa and Sb determine that no disc is left.

  If any one of the switches SW1 to SW4 is turned on in step S10 in FIG. 5, the process proceeds to step S37, and the flag 1 of the two-disk insertion information is set. As a result, it is possible to perform the disk ejection process when there is a possibility that the disk detected by preventing the insertion of two sheets in the disk device described with reference to FIG. In step S37 and subsequent steps, the same processing as that in steps S21 to S36 in FIG. 7 is performed.

  If it is determined in step S15 in FIG. 6 that the transfer roller 18 does not return to the home, it is determined whether the timer time started when the switch SW4 is turned on has elapsed. If it is, the flag 1 of the information for inserting two disks is set (S39), and the process proceeds to step S21 in FIG.

  Accordingly, it is possible to perform the disk ejection process when there is a possibility that the disk detected by preventing the insertion of two sheets in the disk device described with reference to FIG.

  In step S17 of FIG. 6, it is detected whether or not the photosensors Sa and Sb are the succeeding disc D ′, and if it is determined that the disc D ′ has been detected, the process proceeds to step S40, where the flag for the information for inserting two discs is inserted. Set 1

  Accordingly, it is possible to perform the disk ejection process in the case where there is a possibility that the disk detected in the disk apparatus described with reference to FIG. In step S40, the same processing as the routines in steps S21 to S36 in FIG. 7 is performed.

  As described above, when the two-sheet insertion prevention process described with reference to FIGS. 8 to 11 is started in the drive unit 11, information that two disks are inserted is stored in the nonvolatile memory 35, and then the disk D is stored. Execute the 'discharge process. At this time, whether or not two discs are inserted is referred to from the information stored when the disc D 'is removed. When the succeeding disc is inserted, there is a possibility that the first inserted disc D is still left in the drive unit 11, so that the disc left by operating the transfer roller 18 is left. Is performed, and the presence or absence of a disk is confirmed by the photosensors Sa and Sb. If it is confirmed that there is no remaining disk, the transfer roller 18 is returned to the standby position and the operation is terminated. If a disc exists, the eject operation is performed again to eject the disc.

  In this embodiment, when the preceding disk is being ejected from the housing 10 and the succeeding disk is inserted, the preceding disk being ejected can be detected, so that the preceding disk is placed on the drive unit. It is possible to prevent the possibility of being left behind. Further, although the processing for inserting two sheets has been described, even when a foreign object or a deformed disk is inserted, if these are detected, the process automatically proceeds to the ejection operation.

  In the above-described embodiment, the drive unit that drives one disk has been described, but the present invention can also be applied to a storage-type disk device that can store a plurality of disks in the drive unit. Further, the switches SW1 to SW4 that slide the sliders 20a and 20b on and off are not mechanical switches, and electronic, for example, photo sensors may be used.

  As mentioned above, although embodiment was described, this embodiment is shown as an example and is not intending limiting the range of invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 100 Disc apparatus 10 Housing | casing 11 Drive unit 12 Disc insertion port 14 Turntable 15 Transfer unit 18 Transfer roller 20a, 20b Slider 21 Detection lever D Disk S, Sa, Sb Photo sensor SW1-SW4 Switch 32 Detection part 33 System controller 35 Nonvolatile Memory

Claims (4)

A housing having a disk insertion slot;
A transfer unit that guides the disc inserted through the disc insertion port to a loading position and discharges the disc from the loading position through the disc insertion port;
A drive unit provided in the housing and for rotationally driving the disk at the loading position;
When the first disc is inserted through the disc insertion slot and the time for detecting the presence of the second disc inserted in the housing prior to the first disc is longer than a preset time, Detecting means for detecting that the second disk is present in a housing ;
Storage means for storing information indicating the presence of the second disk in the housing when the detection means detects that the second disk is present in the housing ;
When the storage means indicates the presence of the second disk, the transfer unit is controlled to eject the first disk, and then the transfer unit is controlled again to exist in the housing . a control unit for executing re-discharge treated to eject the second disc, with a disk device. Further, the detecting means, the said second disc is switched from the moved or sensor detection state to detect the in the non-detection state to the loading position to detect the completion of disc loading, installed in the disk insertion port when the switch for detecting the first disk has detected the first disk, the second disk is determined to be a state where the left in the housing, the disk apparatus according to claim 1. Further, the detection unit, when the second disc the transfer unit clamping the second disk in the loading position of no return et al in the standby position within a preset time, the second disk is the The disk device according to claim 1, wherein the disk device is determined to be in a state left in the housing. Further, the detection means clamps the second disk at the loading position, and when the transfer unit returns from the disk loading position to the standby position, a sensor at the disk insertion port detects the first disk. 2. The disk device according to claim 1, wherein the disk device determines that the second disk is left in the housing.

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