JP4212527B2 - Recording / playback device - Google Patents

Description

  The present invention relates to a recording / reproducing apparatus using a disk-type recording medium, and more particularly, a front that enables loading and unloading of a recording medium to and from a disk drive unit provided inside the housing from the front surface of the housing. The present invention relates to a loading type recording / reproducing apparatus.

  A recording / reproducing apparatus using a disk-shaped recording medium (recording disk) such as an optical disk or a magnetic disk mounts the recording disk on a disk drive unit and rotates the disk around the central axis by the operation of the disk drive unit. A recording / reproducing head that moves in the radial direction so as to face and oppose one surface of the disk is configured to perform one or both of recording and reproducing information on the one surface.

  In this type of recording / reproducing apparatus, it is necessary to attach and detach the recording disk from the outside of the housing to the disk drive unit arranged inside the housing together with the recording / reproducing head. Has been put to practical use in a front loading type recording / reproducing apparatus in which the above is performed from the front of the housing (for example, see Patent Document 1).

In this type of recording / reproducing apparatus, for example, a recording disk insertion / ejection port is formed on the front surface of the housing, a conveying roller is provided on the inner side of the housing, facing the insertion / ejection port, and a disk is positioned above the disk drive unit The holder and disc clamper are arranged respectively. Loading of the recording disc is performed by feeding the recording disc inserted from the insertion / ejection port into the housing by the forward rotation of the conveying roller that holds both sides and delivering it to the disc holder. After that, the disk holder is moved on the rotating spindle of the disk drive unit by the downward movement of the disk holder, and finally held on the rotating spindle by the disk clamper that is moved downward. When unloading a recording disk, first the holding on the rotating spindle is released by moving the disk clamper up. And, then, it passed to the transport roller by lifting the upward movement of the disk holder is performed sending out the housing through the insertion outlet by the reverse rotation of the conveying roller.
JP 2000-113555 A

  In the front loading system as described above, the communication part that communicates the inside and outside of the housing is substantially only the insertion / extraction port of the recording disk, and can effectively prevent the entry of foreign matter such as dust into the inside of the housing. In addition, it has the advantage that the influence on the internal device of the housing such as the disk drive unit and the recording / reproducing head can be minimized, while the presence or absence of loading of the recording disk cannot be confirmed from the outside, so that it was loaded first. It is necessary to take measures to prevent the phenomenon that the next recording disk is erroneously loaded without being unloaded, that is, the so-called double loading.

  As countermeasures, conventionally, an insertion sensor that detects whether or not a recording disk is inserted into the insertion / ejection port and a loading sensor that detects whether or not a recording disk is mounted in the disk drive unit are provided, and the loading sensor When the disc is detected by the above-described method, the series of loading operations executed as described above is prohibited by detecting the insertion of the recording disc by the insertion sensor as a trigger, thereby preventing the occurrence of double loading. .

  However, in such a recording / reproducing apparatus equipped with such a countermeasure against double loading, there is a possibility that a user who tries to insert a recording disk while leaving the previous recording disk may be mistaken for a loading failure. In addition, there is a possibility that an unreasonable operation of inserting the recording disk is repeated, leading to problems such as scratches and bending of the recording disk.

  On the other hand, even when it is correctly recognized as being in a loading prohibition state, in order to enable loading, a separate operation for ejecting the previously loaded recording disk is required, which is inconvenient. .

  The present invention has been made in view of such circumstances, and an unloading operation for discharging a recording medium left on the disk drive unit is a loading operation for mounting the recording medium inserted into the insertion slot on the disk drive unit. The present invention aims to provide a recording / reproducing apparatus capable of preventing double loading and obtaining good usability without requiring an additional operation.

The recording / reproducing apparatus according to the present invention is a recording / reproducing apparatus in which loading and unloading of a disk-shaped recording medium to and from a disk drive unit provided in the housing can be performed from the front surface of the housing. A recording medium insertion port and a discharge port arranged in parallel on the front surface, and a driving roller and a driven roller that are provided inside the insertion port , hold the recording medium inserted into the insertion port from both the front and back surfaces, and apply a conveying force. A recording medium carrying means having a roller, and a recording medium having a driving roller and a driven roller, which are provided inside the discharge port , hold the recording medium discharged from the discharge port from both front and back sides and apply a conveying force . and unloading means, Yes and arranged between said carrying means and the insertion opening, an insertion detecting means for detecting the presence or absence of insertion of the recording medium to the insertion port, Yes by disposing between the serial outlet and said discharge means, a discharge detecting means for detecting a recording medium discharged from the discharge port, the loading detection for detecting the presence or absence of the mounting of the recording medium into the disk drive unit when the means, the second recording medium Ri by the insertion detecting means during the detection of the first recording medium by the loading detection means is detected, remove the first recording medium from the disk drive unit, An unloading operation is performed in which the drive roller of the unloading means is rotated to send it out of the housing through the discharge port , and the first recording medium is detected by the discharge detection means during the execution of the unloading operation. when in the loading movement of the loading to rotate the drive roller means feeding the second recording medium to the inside of the housing is mounted to the disk drive unit Characterized in that it comprises a control means that perform.

In the present invention, when another recording medium is inserted into the insertion slot in a state where the recording medium is mounted on the disk drive unit, the control operation of the control means according to the detection of the insertion detection means and the loading detection means , first remove the recording medium mounted on the disk drive unit, the rotation of the drive roller of the carry-out means, the insertion port and separately through the outlet placed unloading operation is performed in a series of to leave the feed to the outside of the housing Triggered by the detection of the recording medium being discharged by the discharge detection means during the execution of this operation, the drive roller of the loading means is rotated, and the recording medium inserted into the insertion port is sent into the housing, loading operation of a series you mounted on the disk drive unit is executed.

The recording / reproducing apparatus according to the present invention is characterized in that the carry-in means and the carry-out means share each driven roller.

  In the present invention, the carry-in means and the carry-out means are realized by a simple configuration in which the recording medium is held by each of the separate drive rollers and the shared driven roller to apply the conveyance force.

  Further, the recording / reproducing apparatus according to the present invention is attached to the insertion port and can be pushed and opened to the inside of the housing, and attached to the discharge port and can only be pushed to the outside of the housing. And a shutter means.

  In the present invention, shutter means that can be pushed open by the passage of the recording medium are attached to the insertion opening and the discharge opening, respectively, to prevent foreign substances from entering the housing, and the shutter means for the discharge opening. Only the push-out to the outside of the housing is possible, and the erroneous insertion of the recording medium into the discharge port is prevented.

In the recording / reproducing apparatus according to the present invention, when the recording medium is inserted into the insertion slot in a state where the recording medium is mounted in the disk drive unit, the driving rollers of the carry-in means and the carry-out means are controlled by the control operation of the control means. The unloading operation is performed until the recording medium on the disk drive is ejected out of the housing through the ejection port arranged in parallel with the insertion slot, and the recording medium being ejected is detected by the ejection detection means. Triggered by this, a series of loading operations are performed until the inserted recording medium is fed into the housing and mounted on the disk drive unit, thus preventing double loading, which is an inherent problem in the front loading system. the, any additional operation also does not require, it is possible to realize in the original good usability.

  In addition, since the carry-in means and the carry-out means are constituted by separate driving rollers and a common driven roller, the object can be achieved with a simple configuration, and shutter means are provided at the insertion port and the discharge port, respectively. Therefore, the present invention has excellent effects such as prevention of entry of foreign matters such as dust into the housing and prevention of erroneous insertion of the recording medium.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a side sectional view schematically showing the structure of a recording / reproducing apparatus according to the present invention. This recording / reproducing apparatus has a disk drive unit 2 in a rectangular box-shaped housing 1 partially shown in the figure. And an optical disk apparatus that includes the recording / reproducing head 3 and uses the optical disk D as a recording medium.

  On the front surface of the housing 1 (the left side surface in the figure), a disk insertion port 10 for inserting the optical disk D and a disk discharge port 11 for discharging the optical disk D are opened side by side. In this figure, the disc insertion port 10 is on the bottom and the disc discharge port 11 is on the top, but these may be upside down.

  Inside the housing 1, a disk carry-in roller 12 is installed horizontally along the lower edge of the opening of the disk insertion slot 10, and the opening of the disk discharge opening 11 is opened inside the opening. A disk carry-out roller 13 is laid horizontally along the upper edge of the section. The disk carry-in roller 12 and the disk carry-out roller 13 are drive rollers that rotate about their axes by rotation of separate drive motors (not shown). The rollers 12 and 13 are parallel to each other, and are respectively predetermined. The driven roller 14 which is opposed to each other with a gap is horizontally mounted, and the disk carry-in means is constituted by the disk carry-in roller 12 and the driven roller 14, and the disk carry-out means is constituted by the disk carry-out roller 13 and the driven roller 14. Yes. In this figure, the driven roller 14 is shared between the disk carry-in means and the disk carry-out means to simplify the configuration, but it is also possible to have a structure with separate driven rollers. .

  An insertion sensor 15 for detecting whether or not the optical disk D is inserted into the disk insertion slot 10 is disposed between the disk insertion slot 10 and the disk carry-in roller 12. Between them, a discharge sensor 16 for detecting the presence or absence of the optical disk D between them is arranged. The insertion sensor 15 and the discharge sensor 16 can be configured by, for example, an optical sensor that projects light toward an area where the optical disk D is a target and captures reflected light from the optical disk D. It can also be configured by a micro switch that is turned on by directly contacting the optical disc D.

  The disk drive unit 2 includes a drive motor 20 fixed to the bottom surface of the housing 1 and a rotary spindle 21 fixed to the output end of the drive motor 20, and is coaxial with the upper surface of the rotary spindle 21. The optical disk D mounted on the optical disk D is rotated at a predetermined speed by the rotation of the drive motor 20. The recording / reproducing head 3 is close to and opposed to the recording surface (lower surface) of the optical disk D mounted on the rotary spindle 21, and is moved in the radial direction along the recording surface by the operation of a driving means (not shown). It has a known configuration in which information is recorded or reproduced by irradiating light onto the recording track of the recording surface positioned by the rotation of D.

  A pair of holder posts 4 and 4 are horizontally mounted on both the front and rear sides of the disk drive unit 2 to avoid interference with the rotary spindle 21. The holder posts 4 and 4 have a height position (standby position) below the rotary spindle 21 as a lower limit by the operation of a driving means (not shown), and a height position (loading position) corresponding to the disk loading means. As a result, it is possible to move up and down for a predetermined stroke with the upper limit corresponding to the height position (unloading position) corresponding to the disk unloading means, and to lower the optical disk D on the rotary spindle 21 in the middle of the upward movement path from the standby position. The optical disk D is brought into contact with the position to lift the optical disk D, and the optical disk D held on the upper part is placed on the rotary spindle 21 in the middle of the downward movement path to the standby position.

  A disk clamper 5 that holds the optical disk D between the rotary spindle 21 and the rotating spindle 21 is disposed above the disk drive unit 2. This disc clamper 5 is attached to the tip of a clamper arm 50 pivotally supported at one side of the rotary spindle 21 at a slightly upper position, and responds to the swing of the clamper arm 50 by transmission from a driving means (not shown). The optical disk D is configured to move up and down and descend onto the rotating spindle 21 when moving downward, and to hold the optical disk D between the rotating spindle 21 and the rotating spindle 21.

  Further, a loading sensor 17 for detecting whether or not the optical disk D is mounted on the rotary spindle 21 is disposed below the disk drive unit 2. The loading sensor 17 can be configured by, for example, an optical sensor that projects light toward an existing area of the optical disc D mounted on the rotary spindle 21 and captures reflected light from the optical disc D.

  The output of the loading sensor 17 is given to the loading control unit 6 shown as a functional block in the figure together with the outputs of the insertion sensor 15 and the discharge sensor 16. The loading control unit 6 feeds the optical disk D inserted from the disk insertion slot 10 into the housing 1, loads the optical disk D mounted on the disk driving unit 2, and removes the optical disk D mounted on the disk driving unit 2. The unloading operation is carried out from the discharge port 11 to the outside of the housing 1. The output of the loading control unit 6 is a drive motor for the disk carry-in roller 12 and the disk carry-out roller 13, a drive means for the holder posts 4, 4, In addition, the drive means of the clamper arm 50 for moving the disc clamper 5 up and down is provided via separate drive circuits.

  FIG. 2 is a flowchart showing the operation content of the loading control unit 6. The loading control unit 6 starts operating in response to power supply when the power switch is turned on, and monitors the output of the insertion sensor 15 given to the input side to determine whether or not the optical disk D is inserted into the disk insertion slot 10. (Step 1). Thereby, when it is determined that the optical disk D is not inserted, the loading control unit 6 is in a standby state in which the determination of the presence / absence of insertion is repeated without performing any control operation.

  On the other hand, if it is determined in step 1 that there is an inserted disk, the loading control unit 6 then takes in the output of the loading sensor 17 given to the input side and determines whether or not the optical disk D is mounted on the disk drive unit 2. (Step 2). As a result, when it is determined that the optical disk D is not loaded, a series of loading operations for feeding the optical disk D inserted into the disk insertion slot 10 into the housing 1 and mounting it on the disk drive unit 2 is performed (steps). 3) When it is determined that the optical disk D is mounted, a series of unloading operations for removing the optical disk D and sending the disk discharge port 11 to the outside of the housing 1 are performed together with the above-described loading operation. (Step 4) After these operations are completed, it is determined whether or not the power switch is turned off (Step 5). If the power switch is not turned off, the process returns to Step 1 to determine whether or not a new optical disc D is inserted. Wait while monitoring.

  3 to 7 are explanatory diagrams of loading and unloading operations in the recording / reproducing apparatus according to the present invention. FIG. 1 shows a state during the recording / reproducing operation. The optical disk D is held between the rotary spindle 21 of the disk drive unit 2 and the disk clamper 5 lowered on the rotary spindle 21. It is rotated according to the rotation of the drive motor 20, and information is recorded or reproduced by light irradiation from the recording / reproducing head 3 onto the recording surface. At this time, the optical disk D does not exist in the detection area of the insertion sensor 15 and the ejection sensor 16, and the loading control unit 6 is in the standby state described above. At this time, the optical disk D is present in the detection area of the loading sensor 17, and the holder posts 4 and 4 are at the above-described standby position so as not to hinder the rotation of the optical disk D and the movement of the recording / reproducing head 3. is there.

  FIG. 3 shows a state in which a new optical disc D ′ is inserted into the disc insertion slot 10 with the optical disc D remaining on the disc drive unit 2 after the recording / reproducing operation as described above is finished. At this time, since the optical disk D 'is detected by the insertion sensor 15, the determination of the step 2 is performed in the loading control unit 6, and the optical disk D is detected by the loading sensor 17, so that the process proceeds to step 4. move on.

  In step 4, the loading control unit 6 first issues an operation command to the drive means of the holder posts 4 and 4 and the drive means of the disc clamper 5 at the standby position, and moves the holder posts 4 and 4 to the upper limit position. While moving up to the unloading position, the disk clamper 5 is moved up. FIG. 4 shows a state after completion of the upward movement of the holder posts 4 and 4. At this time, the disc carry-in roller 12 is in a non-rotating state, and the optical disc D ′ inserted through the insertion slot 10 is brought into contact with the disc carry-in roller 12 and the driven roller 14 for further insertion. It is in a blocked state.

  As described above, the holder posts 4 and 4 that move upward contact the optical disk D mounted on the rotary spindle 21 of the disk drive unit 2 from the lower position and lift it by further upward movement. At this time, the optical disk D on the rotating spindle 21 is in a state of being released from the upper side by the upward movement of the disk clamper 5, and is pushed up by the upwardly moving holder posts 4 and 4 to be detached from the rotating spindle 21 and mounted thereon. While being supported by the rack, the disk is lifted to the unloading position, and the disk unloading roller 13 at a height corresponding to the unloading position comes into contact with the upper surface of the pushed-up optical disk D.

  After completion of such upward movement, the loading control unit 6 issues an operation command to the drive motor of the disk carry-out roller 13, and rotates the disk carry-out roller 13 in the direction indicated by the arrow in FIG. Due to this rotation, a moving force is applied to the optical disk D, and the optical disk D is moved toward the disk discharge port 11 under the support of the holder posts 4 and 4. As shown in FIG. 5, the optical disk D moving in this manner is supported by a driven roller 14 from the lower position and further conveyed, while being detected by a discharge sensor 16 arranged on one side of the disk carry-out roller 13.

  The loading control unit 6 is triggered by the detection of the optical disk D by the ejection sensor 16, and then issues an operation command to the drive motor of the disk carry-in roller 12 and the drive means of the holder posts 4 and 4 to carry the disk in. The roller 12 is rotated in the direction indicated by the arrow in FIG. 4 and the holder posts 4 and 4 are moved down to the loading position.

  Due to the rotation of the disk carry-in roller 12, the optical disk D 'inserted from the insertion port 10 is applied with a moving force toward the inside of the housing 1 while being held with the driven roller 14, and the optical disk D' As shown in FIG. 6, the sheet is fed onto the holder posts 4 and 4 at a height corresponding to the disk carry-in roller 12 by descending to the position. Also during this time, the disk carry-out roller 13 continues to rotate, and the optical disk D removed from the disk drive unit 2 is sent out of the housing 1 through the disk discharge port 11.

  The optical disc D ′ inserted into the disc insertion slot 10 is fed into the housing 1 by a predetermined amount of rotation of the disc carry-in roller 12 and the disc carry-out roller 13, and is placed on the holder posts 4, 4 existing at the positions. The optical disk D that is placed and supported and is removed from the disk drive unit 2 is sent out from the disk discharge port 11 until most of the optical disk D protrudes, and is in the state shown in FIG.

  Thereafter, the loading control unit 6 issues an operation command to the drive means of the holder posts 4 and 4 and the drive means of the disk clamper 5 to move the holder posts 4 and 4 down to the standby position which is the lower limit position. At the same time, the disc clamper 5 is lowered. As described above, the stand-by position of the holder posts 4 and 4 is set at a position lower than the rotary spindle 21 of the disk drive unit 2, and the optical disk D 'placed and supported on the holder posts 4 and 4 moves downward. In the middle, the disk clamper 5 is placed on the rotary spindle 21 and then lowered and clamped on the rotary spindle 21 to obtain a loading state as shown in FIG.

  As a result of the determination in step 2, the loading operation of the optical disk D 'which proceeds to step 3 is realized by the operation after the rotation of the disk loading roller 12 and the movement of the holder posts 4 and 4 to the loading position in the above description. can do. For example, the unloading operation of the optical disc D performed in response to the switch operation by the user can be realized by the operation before the rotation of the disc carry-in roller 12 and the movement of the holder posts 4 and 4 to the carry-in position.

  As described above, in the recording / reproducing apparatus according to the present invention, a new optical disk D ′ is inserted into the disk insertion slot 10 opened in the front surface of the housing 1 while the optical disk D remains in the disk drive unit 2 in the housing 1. In this case, the loading of the optical disk D ′ is performed together with the unloading of the optical disk D previously mounted on the disk drive unit 2, and the optical disk D is ejected to the outside of the housing 1 through the disk ejection port 11. Is done. Therefore, the occurrence of double loading can be reliably prevented without requiring any additional operation, and good usability can be obtained. In addition, since a series of operations is started with a new insertion into the disc insertion slot 10 as a trigger, there is no possibility that problems such as scratches and bending of the optical disc D ′ occur due to repeated repeated insertion operations.

  FIG. 8 is a view showing a desirable form of the disc insertion port 10 and the disc discharge port 11. As shown in this figure, a shutter plate 18 that can be pushed open to the inside of the housing 1 is attached to the disk insertion slot 10, and only a push opening to the outside of the housing 1 is possible at the disk discharge slot 11. A suitable shutter plate 19 is attached. By attaching the shutter plates 18 and 19 as described above, it is possible to prevent dust from entering the housing 1 from the disk insertion port 10 and the disk discharge port 11 and to prevent the shutter from being pushed inward. By the action of the plate 19, it is possible to avoid the possibility that the optical disc is erroneously inserted from the disc discharge port 11. The shutter plate 18 attached to the disc insertion slot 10 may not be able to be pushed open to the outside of the housing 1, but there is no possibility that the optical disc is accidentally ejected from the disc insertion slot 10 by the rotation of the disc carry-out roller 13. The shutter plate 18 of the disc insertion slot 10 only needs to be able to be pushed inwardly, and a configuration that makes it impossible to push outwardly is not necessarily required.

  In the above embodiment, an example of application to an optical disc apparatus using an optical disc as a recording medium has been described. However, the present invention is applied to a recording / reproducing apparatus using another disc-shaped recording medium such as a magnetic disc. It goes without saying that is also applicable.

1 is a side sectional view schematically showing a configuration of a recording / reproducing apparatus according to the present invention. It is a flowchart which shows the operation | movement content of a loading control part. It is explanatory drawing of the loading and unloading operation | movement in the recording / reproducing apparatus based on this invention. It is explanatory drawing of the loading and unloading operation | movement in the recording / reproducing apparatus based on this invention. It is explanatory drawing of the loading and unloading operation | movement in the recording / reproducing apparatus based on this invention. It is explanatory drawing of the loading and unloading operation | movement in the recording / reproducing apparatus based on this invention. It is explanatory drawing of the loading and unloading operation | movement in the recording / reproducing apparatus based on this invention. It is a figure which shows the desirable form of a disc insertion port and a disc discharge port.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Disc drive part 4 Holder post 5 Disc clamper 6 Loading control part
10 Disc insertion slot
11 Disc outlet
12 Disk loading roller
13 Disk take-out roller
14 Followed roller
15 Insertion sensor
16 Discharge sensor 17 Loading sensor
18 Shutter plate
19 Shutter plate D, D 'Optical disc

Claims (3)

In a recording / reproducing apparatus configured to perform loading and unloading of a disk-shaped recording medium with respect to a disk drive unit provided in the housing from the front surface of the housing,
An insertion port and a discharge port for a recording medium arranged in parallel on the front surface of the housing;
A recording medium carry-in means having a drive roller and a driven roller, which are provided inside the insertion port , hold the recording medium inserted into the insertion port from both the front and back sides and apply a conveying force ;
A recording medium carry-out means provided on the inside of the discharge port , and having a driving roller and a driven roller for holding the recording medium discharged from the discharge port from both the front and back sides and applying a conveying force ;
Insertion detecting means arranged between the insertion opening and the carrying-in means, and detecting whether or not a recording medium is inserted into the insertion opening ;
A discharge detecting means disposed between the discharge port and the carry-out means, for detecting a recording medium discharged from the discharge port;
Loading detection means for detecting whether or not a recording medium is attached to the disk drive unit;
When the second recording medium Ri by the insertion detecting means during the detection of the first recording medium by the loading detection means is detected, remove the first recording medium from the disk drive unit, the carrying-out means when the through the outlet drive roller is rotated to perform the unloading operation to be sent out to the outside of the housing, wherein the first recording medium is detected by the discharge detection means during execution of the unloading operation, recording and reproducing apparatus, characterized in that the drive roller of the carrying means rotates feeding the second recording medium in the housing, and a control means that perform the loading operation to be attached to said disk drive unit . The recording / reproducing apparatus according to claim 1, wherein the carry-in means and the carry-out means share each driven roller. Shutter means attached to the insertion port and capable of being pushed open to the inside of the housing;
The recording / reproducing apparatus according to claim 1, further comprising: a shutter unit that is attached to the discharge port and can only be pushed open to the outside of the housing.

Images