JP2007250088A - Disk player and control method and control program of disk player - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely detect a disk diameter not only for a general disk but also for a partially transparent disk. <P>SOLUTION: The disk player for loading the disk inserted to an insertion port to the inner side of a main body and reproducing it comprises a pair of gate members parted almost at the center and disposed to the insertion port to be withdrawn to the side part of the insertion port while being abutted to the outer peripheral part of an inserted disk and turned, a first detection part SWA for detecting that the turning angle of the gate members is equal to or more than a first turning angle accompanying the passing of the disk, and a second detection part SWB for detecting that the turning angle of the gate members is equal to or more than a second turning angle larger than the first turning angle accompanying the passing of the disk. On the basis of the temporal change of the detection state of the first detection part SWA and the detection state of the second detection part SWB accompanying loading, the diameter of the disk of a loading object is discriminated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a disc player that is mounted on a vehicle and reproduces information on a recording medium disc such as a CD (compact disc) or a DVD (digital versatile disc), a control method and a control program for the disc player, and is particularly inserted. The present invention relates to a technique for discriminating the diameter of a disc.

Generally, in a conventional disc player such as a CD or DVD player mounted on a vehicle, the disc drawn into the main body by sucking a disc having a different diameter (size) such as an 8 cm disc or a 12 cm disc from an insertion slot. Is clamped on a turntable and chucked for reproduction (see, for example, Patent Document 1).
WO / 2001/091119

By the way, in a disc player that reproduces discs having different diameters, it is necessary to detect the diameter (size) of the inserted disc in order to normally reproduce the inserted disc.
For this reason, in the past, for example, in a disc player capable of reproducing 8 cm discs and 12 cm discs, it is detected that a disc has been inserted, and a reflective or transmissive optical sensor is inserted into a large 12 cm disc. If the disc is inserted in a position where it can be detected, it is detected that the disc has been inserted, and the reflective optical sensor cannot detect the disc, operation control is performed assuming that an 8 cm disc has been inserted. Was supposed to do.

However, in recent years, there are discs that are transparent from the viewpoint of design in areas where data can be written, and in a disc player, an optical sensor detects such a part in a transparent area. When trying to do so, it is detected that there is no disk, and the diameter of the disk. Therefore, the object of the present invention is to detect the diameter of a disk reliably not only for general disks but also for partially transparent disks. A disc player, a disc player control method, and a control program are provided.

In order to solve the above-mentioned problems, in a disc player that loads and plays a disc inserted into the insertion slot inside the main body, the disc is arranged at the insertion slot in a substantially centered manner and is in contact with the outer periphery of the inserted disc. A pair of gate members retreating to the side of the insertion opening while rotating, and a first detecting that the rotation angle of the gate member is equal to or greater than the first rotation angle as the disk passes. A second detector that detects that a rotation angle of the gate member is greater than or equal to a second rotation angle that is greater than the first rotation angle as the disc passes; A disc diameter discriminating unit that discriminates a diameter of a disc to be loaded based on a temporal change in a detection state of the first detection unit and a detection state of the second detection unit associated with the loading. Have
According to the above configuration, the first detection unit detects that the rotation angle of the gate member is equal to or greater than the first rotation angle as the disc passes, and the second detection unit detects the rotation of the gate member. It is detected that the moving angle is greater than or equal to a second rotation angle larger than the first rotation angle as the disc passes.
Thereby, the disc diameter discriminating unit discriminates the diameter of the disc to be loaded based on the temporal change of the detection state of the first detection unit and the detection state of the second detection unit accompanying loading.

  In this case, when only the first detection unit is in a detection state from the start of loading to the end of loading accompanying the loading, the disc diameter detecting unit loads a disc having the first diameter. If both the first detection unit and the second detection unit are in the detection state from the start of loading to the end of loading with the loading, the first larger than the first diameter is determined. It may be determined that a disk having a diameter of 2 is loaded.

The first detection unit and the second detection unit each include a mechanical switch, and at least one of the gate members is operated a predetermined number of times by rotating the mechanical switch as the disk passes through. An operation holding unit that holds the state may be formed in the moving angle range.
Furthermore, a disc diameter data storage unit for storing the discrimination result of the disc diameter discrimination unit as disc diameter data may be provided.

Furthermore, a lock portion may be provided that prevents the pair of gate members from being retracted to the side when the disc is inserted while being shifted laterally from substantially the center of the insertion slot.
Further, the pair of gate members may be urged toward the center of the insertion port by the urging member.

  In addition, it is provided with a pair of gate members that are arranged in the insertion slot in a substantially centered manner and rotate in contact with the outer periphery of the disk to be inserted and retract to the side of the insertion slot, and are inserted into the insertion slot. And a first detection process for detecting that the turning angle of the gate member is equal to or greater than the first turning angle as the disc passes through the disc player for loading and playing the disc inside the main body. , A second detection process for detecting that the rotation angle of the gate member is equal to or greater than a second rotation angle larger than the first rotation angle with the passage of the disc, and accompanying the loading A disc diameter determining process for determining a diameter of a loading target disc based on a temporal change in the detection state of the first detection unit and the detection state of the second detection unit.

  Also, a pair of gate members that are arranged substantially at the center of the insertion slot and rotate in contact with the outer periphery of the disk to be inserted, retreat to the side of the insertion slot, and a rotation angle of the gate member A first detector for detecting that the rotation angle is equal to or greater than a first rotation angle; and a first detection unit that detects that the rotation angle of the gate member is equal to or greater than a second rotation angle greater than the first rotation angle. A control program for controlling, by a computer, a disc player that loads and reproduces the disc inserted into the insertion slot into the inside of the main body, wherein the rotation angle of the gate member is the disc The second rotation angle of the gate member is detected to be greater than or equal to the first rotation angle with the passage of the disk. Detects whether the rotation angle is greater than , To determine the diameter of the loading target disk based on the temporal change in the detection state of the rotation angle due to the loading, it is characterized in that.

  According to the present invention, a pair of gate members are provided in the insertion slot, and the diameter of the disk can be mechanically determined based on a temporal change in the rotation angle of the gate member accompanying loading. In other words, the disk diameter can be reliably detected even if the disk is partially transparent.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing the external appearance of the disc player according to the present embodiment.
In the disc player 1, a recording medium disc having a different size such as a diameter of 8 cm or a diameter of 12 cm, such as a CD or a DVD, is drawn, and information recorded on the disc is reproduced. The disc player 1 includes a chassis 3 made of sheet metal. The chassis 3 includes a lower chassis 5 and an upper chassis 7 that covers the upper portion of the lower chassis 5, and a loading mechanism for loading a disk, which is not shown in FIG. There are provided a clamper mechanism for driving, a drive mechanism for driving the clamper mechanism, and the like.
Further, on the upper surface of the upper chassis 7, a loading switch SWA for detecting the loading position of the disc and a reloading switch SWB for detecting the reloading position of the disc are provided. The detection method will be described later.

FIG. 2 is a perspective view with the upper chassis removed. FIG. 3 is a perspective view of the lower chassis. FIG. 4 is a left perspective view of the drive unit attached to the lower chassis. FIG. 5 is a right perspective view of the drive unit attached to the lower chassis.
The lower chassis 5 is formed in a frame shape as shown in FIG. 3, and three vibration isolation structures 11 having dampers and springs are attached to the lower chassis 5. As shown in FIG. 2, a drive unit 9 in which a clamper mechanism and a drive mechanism are integrated is placed and supported in a floating manner. 4 and 5, the drive unit 9 includes a base plate 13 and a swing plate 17 that is connected to both sides of the rear end portion of the base plate 13 by hinges 15 and spring-biased in a direction to close the front end 17A. It is prepared for. A rotating plate 19 is supported on the tip 17 A of the swing plate 17, and a turntable 21 containing a magnet facing the rotating plate 19 is supported on the base plate 13. As will be described later, when the disc is inserted and the swing plate 17 is closed, the disc can be rotated by being sandwiched between the rotating plate 19 at the tip 17A and the turntable 21 with magnet.

As shown in FIG. 1, a horizontally long disk insertion slot 23 is formed in the front surface of the main body 1, and at the back of the insertion slot 23 is a motor 24 at the front of the lower chassis 5 as shown in FIG. 2. A loading roller 25 to be driven is provided.
When the disc is detected, the loading roller 25 is driven by the motor 24 to draw the disc into the main body 1. The loading roller 25 is supported by a roller support plate 27, and the base of the roller support plate 27 is connected to the lower chassis 5 by a hinge pin 28. Therefore, the loading roller 25 displaces its height position by the swinging of the roller support plate 27.

  A trigger plate 31 is swingably supported via a support pin 30 on the left rear portion of the upper surface of the drive unit 9. The trigger plate 31 is biased counterclockwise by a spring 31S, and two claw portions 32 and 33 bent inward of the drive unit 9 are integrally formed at one end 31A thereof. Yes. The pulled-in 8 cm disc can come into contact with one claw portion 32, and the drawn-in 12 cm disc can come into contact with the other claw portion 33. The other end 31 </ b> B of the trigger plate 31 extends to the outside of the drive unit 9 and is bent downward along the outer wall of the drive unit 9. The other end 31 </ b> B contacts the rear surface 35 </ b> K of the trigger 35 disposed in the lower chassis 5. Then, when the disc is drawn into the main body 1 and abuts against one of the claws 32 and 33 and the trigger plate 31 rotates counterclockwise, the trigger plate 31 advances the trigger 35 (in the direction of arrow X). Let As shown in FIG. 4, the trigger 35 is normally biased toward the other end 31 </ b> B (in the direction of arrow Y) by a spring 34.

  A part of the trigger 35 extends forward from the bottom of the lower chassis 5, and a trigger rack gear 35A is integrally formed on the upper surface of the extension. A final gear 37 (see FIG. 3) supported by the side plate 5A of the lower chassis 5 is disposed in front of the trigger rack gear 35A. The final gear 37 is supported at a position where it does not mesh with the trigger rack gear 35A at normal times, and meshes with the trigger rack gear 35A only when the trigger plate 31 rotates and the trigger 35 moves forward. As shown in FIG. 2, the final gear 37 is connected to the motor 24 at the front of the lower chassis 5 via a gear train 38 composed of a plurality of gears. When the motor 24 is driven, the trigger rack gear 35A is connected. Once the final gear 37 and the final gear 37 are engaged with each other, the trigger 35 is advanced by the driving force of the final gear 37 and the motor 24 thereafter.

As shown in FIG. 4, a trigger cam 41 is integrally connected to the trigger 35. The trigger cam 41 extends inside the gear wheel train 38 in parallel with the gear wheel train 38, and a cam surface 41A is formed on the middle upper surface. The part is formed with a step-like inclined groove 41B that rises forward to guide the drive shaft 25A (see FIG. 2) of the loading roller 25. A part 17B of the swing plate 17 of the drive unit 9 is in contact with the cam surface 41A.
After the trigger 35 meshes with the final gear 37 and moves to the stroke end, the trigger cam 41 is pushed out, the rack of the trigger cam 41 meshes with the final gear 37, and the trigger cam 41 moves forward (in the direction of arrow X).

  When the trigger cam 41 moves forward (in the direction of the arrow X), the cam surface 41A with which the part 17B is in contact is gradually lowered, and the swing plate 17 is swung in the closing direction by the spring force. When the trigger cam 41 further moves forward and moves to the forward limit position, the part 17B is completely separated from the cam surface 41A, and the disc clamping by the rotary plate 19 at the tip of the swing plate 17 and the turntable 21 is completed. . At the same time, the engagement of the part 17B of the swing plate 17 and the cam surface 41A causes the drive unit 9 to be completely supported by floating via the three vibration isolation structures 11. At the same time, the drive shaft 25A of the loading roller 25 moves to a low position along the inclined groove 41B, and the loading roller 25 is displaced low by the swinging of the roller support plate 27. Move away from the bottom of the disc. In this state, the turntable 21 is rotated to reproduce the disc.

  When the motor 24 is rotated in the reverse direction, the trigger 35 and the trigger cam 41 move backward (in the direction of arrow Y) via the gear wheel train 38, the final gear 37, and the trigger rack gear 35A. Along with this, the cam surface 41A with which the part 17B abuts gradually increases, and the swing plate 17 is pushed up against the spring force and swings in the opening direction. When the trigger cam 41 further moves backward and moves to the retreat limit position, a part 17B rides on the highest position of the cam surface 41A, and the disk is located between the rotary plate 19 at the tip of the swing plate 17 and the turntable 21. A gap for insertion is formed.

At the same time, the drive shaft 25A of the loading roller 25 gradually moves to a higher position along the inclined groove 41B. At the retreat limit position, the loading roller 25 is brought into contact with the lower surface of the disk by the swinging of the roller support plate 27. High displacement until contact. Then, the disc is ejected by the loading roller 25.
After ejecting the disc, it is in a waiting state for loading. In an eject or loading standby state, the drive unit 9 is locked to the lower chassis 5 by a mechanism not shown.

FIG. 6 is a top view of the upper chassis.
In this configuration, as shown in FIG. 1, a pair of gate members 59 that come in contact with the outer peripheral portion of the disk to be inserted and retract to the side of the insertion slot 23 are provided in the disk insertion slot 23. Yes.
The gate member 59 is provided with a pair of turn plates 62 and 63 arranged substantially at the center with respect to the insertion port 23, and these turn plates 62 and 63 are formed on the front outer surface of the upper chassis 7 as shown in FIG. Are connected via pins (support members) 64 and 65, respectively. The turn plates 62 and 63 are biased in the closing direction (in the direction of arrow A) by the springs 60 and 61, and a pair of gate pins 67 and 68 facing the insertion port 23 are attached to the turn plates 62 and 63. Yes.

Further, slide holes 62A and 63A are formed in the base portions of the turn plates 62 and 63, and pins 71 and 72 that fit into the slide holes 62A and 63A are attached to the connecting plate 73, respectively. The bases of these turn plates 62 and 63 are connected by a connecting plate 73. A pin 173 is fixed to the connecting plate 73, and the pin 173 is fitted in the vertical hole 107 of the upper chassis 7 and faces the lower surface of the upper chassis 7 as shown in FIG. 9. Arc holes 107A and 170B having a diameter larger than the width W of the vertical hole 107 are formed in both hole walls in the middle of the vertical hole 107.
Further, the turn plate 62 is in contact with the loading switch SWA and the reloading switch SWB shown in FIG. 1, and is connected to the protrusion 62X for turning on and the loading switch SWA and the reloading switch SWB for maintaining the on state. And a sliding portion 62Y that is slidably contacted. With this configuration, when the reloading switch SWB is in the on state, the loading switch SWA is always on by the sliding portion 62Y.
As shown in FIG. 6, a pair of guide holes 74 and 75 extending in the disc insertion direction (the direction of arrow Z) are formed in the connection plate 73, and guide portions that fit into the guide holes 74 and 75 are formed. 76 and 77 are formed by cutting and raising a part of the upper chassis 7, raising it upward, and then bending it horizontally. The raised thin parts fit into the guide holes 74 and 75. Reference numeral 78 denotes a plate attached to the upper chassis 7, and this plate 78 functions as a stopper in the closing direction of the turn plates 62 and 63.

FIG. 7 is a perspective view showing a state in which a pair of gate members are opened with a 12 cm disc.
When the disc is inserted into the insertion slot 23, the disc pushes the gate pins 67 and 68 sideways. For example, when the disc 100 having a large 12 cm diameter is inserted, as shown in FIG. 7, the outer peripheral portion 100A of the disc 100 pushes the pair of gate pins 67 and 68 toward the side of the insertion slot 23, thereby turning the turn plates 62 and 63. Rotates in the direction of opening (direction of arrow B). Along with this rotation, the pins 71 and 72 move in the slide holes 62A and 63A, thereby interlocking with the swinging of the turn plates 62 and 63, and the connecting plate 73 along the guide portions 76 and 77. Reciprocate in the disc insertion direction (in the direction of arrow Z).

FIG. 8 is a perspective view showing a state in which a pair of gate members are opened with an 8 cm disc.
In this case, since the disc diameter is smaller than the width of the insertion port 23, there is a possibility that the disc is inserted biased to one end of the insertion port 23. For example, when the disk 200 is inserted in a biased manner toward one gate pin 67, the other gate pin 68 is hardly pushed away, and only one pin 67 is pushed away. In this case, only the turn plate 62 on the side of one gate pin 67 rotates in the opening direction (the direction of arrow B).

  In this configuration, when the other turn plate 63 is not opened and only the one turn plate 62 is opened, the connecting plate 73 is rotated only on the pin 71 side without rotating on the pin 72 side. In this case, the connecting plate 73 is inclined.

  When the connecting plate 73 is inclined, referring to FIG. 9B, the pin 173 that moves through the vertical hole 107 is fitted into one of the arc grooves 107A and 107B inclined in the middle of the vertical hole 107, and the connecting plate 73 is Further, the disc 200 does not move in the insertion direction of the disc 200 (in the direction of the arrow Z). Therefore, further rotation of the turn plates 62 and 63 is prevented, and disc insertion is prevented. This state is the same when the disc 200 is inserted with a bias toward the other gate pin 68. The pin 173 and the arc grooves 107A and 107B constitute the locking means for the turn plates 62 and 63.

  In other words, in this configuration, when the disc 200 is inserted with a bias toward the end of the insertion slot 23, the pin 173 is caught by the arc grooves 107A and 107B to become resistance, and the connecting plate 73 is locked. According to this, the insertion of the disc biased toward the end of the so-called insertion slot 23 is prohibited. Therefore, a conventional mechanism for guiding the disk sucked in a state of being close to one side to the center inside the main body becomes unnecessary, and the apparatus can be miniaturized correspondingly, particularly in the thickness direction of the apparatus. The dimensions can be reduced.

FIG. 9 is a perspective view of the upper chassis 7 as viewed from the back side.
In the present embodiment, when the upper chassis 7 is assembled, it projects downward (on the side facing the loading roller 25) to the inner surface of the upper chassis 7 and guides the disk inserted into the insertion slot 23 downward (or upward). Guide bars (guide mechanisms) 81 and 82 extending in two rows are provided.

  These guide bars 81 and 82 extend in parallel to each other in the lateral direction of the insertion port 23, and each gradually increases in height toward the end of the insertion port 23. The front guide bar 81 gradually increases the height of the protrusion 81A from the position m near the center, and the back guide bar 82 gradually increases the height of the protrusion 82A from the position n closer to the end. Make it bigger. A loading roller 25 is opposed to the pair of guide bars 81 and 82, and is sandwiched between the roller 25 and the guide bars 81 and 82 to load the disc.

FIG. 10 is a cross-sectional view when an 8 cm diameter disc is inserted.
FIG. 11 is a perspective view when an 8 cm diameter disc is inserted.
FIG. 12 is a cross-sectional view when a 12 cm diameter disk is inserted.
FIG. 13 is a perspective view when a 12 cm diameter disk is inserted.
As shown in FIG. 10, when an 8 cm diameter disc 200 is inserted, the disc 200 inserted from the insertion slot 23 is placed between the loading roller 25 and the low protrusions 81A and 82A of the guide bars 81 and 82. It is sandwiched and loaded into the back of the main body 1 along the first loading path RK1 positioned at a high position inside the main body 1. A first disk contact portion 83 is located at the end of the first loading path RK1, and the disk 200 stops by contacting the first disk contact portion 83. At this stage, the disk 200 is As shown in FIG. 11, the claw portion 32 of the trigger plate 31 is pushed, and this is used as a trigger to perform the clamping operation of the disc 200 as described above.

As shown in FIG. 12, when a 12 cm diameter disc 100 is inserted, the disc 100 inserted from the insertion slot 23 is formed between the loading roller 25 and the protruding portions 81A and 82A of the respective guide bars 81 and 82 which are raised. It is sandwiched between and loaded into the back of the main body 1 along the second loading path RK2 located in the lower part inside the main body 1.
As shown in FIG. 13, a guide bar 331 is formed on the outer periphery (right back in the figure) of a 12 cm diameter disc 100 so as to be in contact therewith. The guide bar 331 is rotatably supported by a pin 310 and is urged clockwise around the pin 310 via a spring 312.

As shown in FIG. 11, a taper surface 313 is formed on the lower surface of the free end of the guide bar 331, and when a 12 cm diameter disc 100 is inserted, first, the disc 100 is moved along the taper surface 313. The tip 100A of the trigger plate 31 is directed downward, and the claw portions 32 of the trigger plate 31 are crossed. When the disk 100 further enters the back, the guide bar 331 rotates counterclockwise around the pin 310, and the guide bar 331 guides the outer periphery of the disk 100, and stable loading is executed. A second disk abutting portion 84 is located at the end of the second loading path RK2, and the disk 100 comes into contact with and stops at the second disk abutting portion 84. As shown in FIG. 13, 100 pushes the claw portion 33 of the trigger plate 31, and this is used as a trigger to execute the clamping operation of the disc 100 as described above. When this clamping is completed, the protrusion 314 on the lower surface of the guide bar 331 is fitted into a recess (not shown) on the swing plate 17 side, and the guide bar 331 is fixed away from the outer periphery of the disk 100. Therefore, the guide bar 331 does not come into contact with the disc 100 during performance.

  In this configuration, since different loading paths RK1 and RK2 are formed separately inside the main body 1, a complicated mechanism for holding discs having different diameters at the end of the loading path as in the prior art. There is no need to provide the device, and the device can be thinned. The present configuration can also be applied to, for example, a disc player that loads discs of different materials. In this case, if the loading path is devised according to the material, etc., a disc that is not damaged or the like is provided. .

Next, a specific disk loading operation will be described.
FIG. 14 is a block diagram of the control system.
The control system includes a controller 110 that controls the whole, a loading switch SWA that detects the loading position of the disc, a village loading switch SWB that detects the reloading position of the disc, a chucking switch SWC that detects the disc chucking position, And a loading motor 24 for loading.
FIG. 15 is a process flowchart (part 1) at the time of disk loading. FIG. 16 is a process flowchart (part 2) at the time of disk loading.
FIG. 17 is an explanatory diagram of an initial state before disk loading.

First, the controller 110 determines whether or not the loading switch SWA is in an on state by the protrusion 62X and the sliding portion 62Y when the disc is inserted and the turn plate 62 is rotated (step S11).
If it is determined in step S11 that the loading switch SWA is in the off state (step S11; No), the controller 110 is in a standby state because a disk has not yet been inserted.
If it is determined in step S11 that the loading switch SWA of the turn plate 62 is on (step S11; Yes), the controller 110 sets a 5 sec timer because the disk is inserted (step S12). ).
Subsequently, the controller 110 performs a motor rotation process for rotating the loading motor 24 in the loading direction (disk insertion direction) (step S13).
Further, the controller 110 determines whether or not the reloading switch SWB is in the on state by the protrusion 62X and the sliding portion 62Y (step S14).

If the reloading switch SWB is in the OFF state in the determination in step S14 (step S13; No), the controller 110 determines whether or not the 5 sec timer has timed out (step S15).
If it is determined in step S15 that the 5 sec timer has timed out (step S15; Yes), the controller 110 has failed to load the disk, and thus proceeds to a full ejection process described later (step S17).
If it is determined in step S15 that the 5 sec timer has not yet timed out (step S15; No), the controller 110 determines again whether or not the loading switch SWA is on (step S16).
If it is determined in step S16 that the loading switch SWA is in the OFF state (step S16; Yes), the controller 110 has failed to load the disc, and thus proceeds to a full ejection process described later (step S17).

FIG. 18 is an explanatory diagram immediately after disk loading.
In step S16, as shown in FIG. 18, the disc 100 (or 200) is inserted, the pair of gate pins 67 and 68 are pushed to the side of the insertion slot 23, and the loading switch SWA is turned on by the turn plate 62. When it is in the state (step S16; No), the controller 110 shifts the process to step S14 again.
If the reloading switch SWB is on in step S14 (step S14; Yes), the controller 110 sets a 12 cm disc determination flag because the inserted disc is a 12 cm disc (step S18). ), The 5-second timer is set again (step S19).

FIG. 19 is an explanatory diagram when a 12 cm disc is loaded.
Further, the controller 110 determines whether or not the reloading switch SWB is in an off state (step S20).
If it is determined in step S20 that the reloading switch SWB is on (step S20; No), that is, if the inserted disc is a 12 cm disc, the controller 110 causes the 5 sec timer to time out. It is determined whether or not (step S21).
If it is determined in step S21 that the 5 sec timer has not yet timed out (step S21; No), the controller 110 shifts the process to step S20 again.

If it is determined in step S21 that the 5 sec timer has timed out (step S21; Yes), the controller 110 proceeds to a loading retry process described later (step S22).
If it is determined in step S20 that the reloading switch SWB is in the OFF state (step S20; Yes), the controller 110 sets the 5 sec timer again because the disk has been successfully loaded (step S19). .
Further, the controller 110 determines whether or not the loading switch SWA is in an off state (step S24).
If it is determined in step S24 that the loading switch SWA is on (step S24; No), the controller 110 determines whether or not the 5 sec timer has timed out (step S25).

If it is determined in step S25 that the 5 sec timer has not yet timed out (step S25; No), the controller 110 proceeds to step S24 again.
If it is determined in step S25 that the 5 sec timer has timed out (step S25; Yes), the controller 110 proceeds to a loading retry process described later (step S26).
If it is determined in step S24 that the loading switch SWA is in the off state (step S24; Yes), the controller 110 sets the 5 sec timer again (step S27).
Further, the controller 110 determines whether or not the chucking switch SWC is in an on state (step S28).

If it is determined in step S28 that the chucking switch SWC is in the OFF state (step S28; No), the controller 110 determines whether or not the 5 sec timer has timed out (step S29).
If it is determined in step S29 that the 5 sec timer has not yet timed out (step S29; No), the controller 110 proceeds to step S28 again.
If it is determined in step S29 that the 5 sec timer has timed out (step S29; Yes), the controller 110 proceeds to a loading retry process described later (step S30).
FIG. 20 is an explanatory diagram when the disc is loaded at the normal position.
If it is determined in step S28 that the chucking switch SWC is on (step S28; Yes), as shown in FIG. 20, it means that the disk has been loaded at the normal position. Processing to stop the loading motor 24 is performed (step S31).

Next, the controller 110 determines whether or not the storage of the disk diameter data has been completed (step S32). If the storage of the disk diameter data has not yet been completed (step S32; No), the controller 110 enters a standby state. .
If the storage of the disk diameter data is completed in the determination in step S32 (step S32; Yes), the controller 110 chucks the disk and ends the process (step S33).

Next, the loading retry process will be described.
FIG. 21 is an explanatory diagram of a disk loading retry process.
FIG. 22 is a process flowchart (part 1) of the loading retry process. FIG. 23 is a flowchart (part 2) of the loading retry process.
When the loading retry process is started, that is, when the disk loading fails, the controller 110 performs a stopping process of the loading motor 24 (step S41).
Subsequently, the controller 110 waits for 500 msec (step S42), and rotates the loading motor 24 in the eject direction in order to transport the disc in the ejection direction (eject direction) (step S43).
Subsequently, the controller 110 sets a 5 sec timer (step S44).
Next, the controller 110 determines whether or not the disk is transported to the position shown in FIG. 21 and the reloading switch SWB is in the OFF state (step S45).

If it is determined in step S45 that the reloading switch SWB is on (step S45; No), the controller 110 determines whether or not the 5 sec timer has timed out (step S46).
If it is determined in step S46 that the 5 sec timer has not yet timed out (step S46; No), the controller 110 proceeds to step S45 again.
If it is determined in step S46 that the 5 sec timer has timed out (step S46; Yes), the controller 110 proceeds to step S47.
If it is determined in step S45 that the reloading switch SWB is in the OFF state (step S45; Yes), the controller 110 performs a stop process for the loading motor 24 (step S47).

Subsequently, the controller 110 waits for 500 msec (step S48), and rotates the loading motor 24 in the loading direction to transport the disc in the loading direction (step S49).
Subsequently, the controller 110 sets a 5 sec timer (step S50).
Next, the controller 110 determines whether or not the reloading switch SWB is in an on state (step S51).
If the reloading switch SWB is in the OFF state in the determination in step S51 (step S51; No), the controller 110 determines whether or not the 5 sec timer has timed out (step S52).

If it is determined in step S52 that the 5 sec timer has not yet timed out (step S52; No), the controller 110 proceeds to step S51 again.
If it is determined in step S52 that the 5 sec timer has timed out (step S52; Yes), the controller 110 subtracts a retry counter (initial value = 3 in this embodiment) (step S53), It is determined whether or not the loading retry has been performed a number of times (three times in the present embodiment) (step S54). Specifically, the controller 110 determines whether a predetermined number of loading retries have been performed based on whether the value of the retry counter = 0.
If it is determined in step S54 that the predetermined number of loading retries have not yet been made (step S54; No), the controller 110 shifts the process to step S41 again, and thereafter performs the same process.

In the determination of step S54, when a predetermined number of loading retries have been made (step S54; Yes), the controller 110 sets a mechanical error flag indicating that the loading could not be performed mechanically (step S55). In order to eject the disc, the process proceeds to a full eject process described later (step S56).
If it is determined in step S51 that the reloading switch SWB is on (step S51; Yes), the controller 110 sets a 5 sec timer (step S57).
Next, the controller 110 determines whether or not the reloading switch SWB is in an off state (step S58).
If it is determined in step S58 that the reloading switch SWB is on (step S58; No), the controller 110 determines whether or not the 5 sec timer has timed out (step S59).

If it is determined in step S59 that the 5 sec timer has not yet timed out (step S59; No), the controller 110 shifts the process to step S58 again.
If it is determined in step S59 that the 5 sec timer has timed out (step S59; Yes), the controller 110 decrements the retry counter (step S60) and determines whether or not a predetermined number of loading retries have been performed. (Step S61).
If it is determined in step S61 that the predetermined number of loading retries have not yet been made (step S61; No), the controller 110 shifts the process to step S41 again, and thereafter performs the same process.

If it is determined in step S61 that a predetermined number of loading retries have been made (step S61; Yes), the controller 110 sets a mechanical error flag indicating that mechanical loading could not be performed (step S62). In order to eject the disk, the process proceeds to a full eject process described later (step S63).
If it is determined in step S58 that the reloading switch SWB is in the off state (step S58; Yes), then the controller 110 sets a 5 sec timer (step S64).

Next, the controller 110 determines whether or not the chucking switch SWC is on (step S65).
If it is determined in step S65 that the chucking switch SWC is in the off state (step S65; No), the controller 110 determines whether or not the 5 sec timer has timed out (step S66).
If it is determined in step S66 that the 5 sec timer has not yet timed out (step S66; No), the controller 110 proceeds to step S65 again.
If it is determined in step S66 that the 5 sec timer has timed out (step S66; Yes), the controller 110 decrements the retry counter (step S67) and determines whether or not a predetermined number of loading retries have been performed. (Step S68).

If it is determined in step S68 that a predetermined number of loading retries have not yet been made (step S68; No), the controller 110 shifts the process to step S41 again, and thereafter performs the same process.
If it is determined in step S68 that a predetermined number of loading retries have been made (step S68; Yes), the controller 110 sets a mechanical error flag indicating that mechanical loading could not be performed (step S69). In order to eject the disc, the process proceeds to a full eject process described later (step S70).
If it is determined in step S65 that the chucking switch SWC is in the ON state (step S65; Yes), it means that the disk has been loaded at the normal position. Therefore, the controller 110 stops the loading motor 24. Is performed (step S71).

Next, the controller 110 determines whether or not the storage of the disk diameter data has been completed (step S72). If the storage of the disk diameter data has not yet been completed (step S72; No), the controller 110 enters a standby state. .
If it is determined in step S72 that the disk diameter data has been saved (step S72; Yes), the controller 110 chucks the disk and ends the process (step S73).

Next, the full ejection process will be described.
FIG. 24 is a flowchart (part 1) of the full eject process. FIG. 25 is a flowchart (part 2) of the full eject process.
When shifting to the full ejection process, the controller 110 first rotates the loading motor 24 in the ejection direction (step S81).
Next, the controller 110 determines whether or not there is an eject command when the disk is not inserted (NODISC) (step S82).
If it is determined in step S82 that there is no eject command when the disk is not inserted (NODISC) (step S82; Yes), the controller 110 determines whether the loading switch SWA is OFF, that is, the disk is not inserted (NODISC). Is determined (step S83).

If it is determined in step S83 that the loading switch SWA is on, that is, the disc is in the inserted state (step S83; No), the process proceeds to step S89.
If it is determined in step S83 that the loading switch SWA is off, that is, the disk is not inserted (NODISC), the controller 110 sets a 2-second timer (step S84).
Subsequently, the controller 110 determines whether or not the 2-second timer has timed out (step S85).
If it is determined in step S85 that the 2-second timer has timed out (step S85; Yes), the controller 110 stops the loading motor 24 (step S86), and the process proceeds to step S94.

On the other hand, if it is determined in step S82 that there is an eject command when the disc is not inserted (NODISC) (step S82; No), the loading switch SWA is turned off, that is, whether or not the disc is not inserted (NODISC). Is determined (step S87).
If it is determined in step S87 that the loading switch SWA is on, that is, if the disc is in the inserted state (step S87; No), the controller 110 shifts the process to step S82 again.
If it is determined in step S87 that the loading switch SWA is OFF, that is, the disk is not inserted (NODISC), the controller 110 determines whether the photo sensor is OFF or the 8 cm disk error detection flag is OFF (step S87). S88).

If it is determined in step S88 that either the photosensor or the 8 cm disc erroneous detection flag is on (step S88; No), the controller 110 proceeds to step S84.
If it is determined in step S88 that the photo sensor is off or the 8 cm disc erroneous detection flag is off, a 500 msec timer is set (step S89).
Subsequently, the controller 110 determines whether or not the 500 msec timer has timed out (step S90). If the time has not timed out, the controller 110 enters a standby state.
If it is determined in step S90 that the 500 msec timer has timed out (step S90; Yes), the controller 110 sets a 2-second timer (step S91).

Subsequently, the controller 110 determines whether or not the 2-second timer has timed out (step S92), and enters a standby state if it has not timed out.
If it is determined in step S92 that the 2-second timer has timed out (step S92; Yes), the controller 110 stops the loading motor 24 (step S93), and the loading switch SWA is turned off, that is, the disk. It is determined whether or not it is in a non-insertion (NODISC) state (step S94).
If it is determined in step S94 that the loading switch SWA is on, that is, the disc is in the inserted state (step S87; No), the controller 110 determines that it is in the ejected state and ends the processing (step S98).
If it is determined in step S94 that the loading switch SWA is OFF, that is, the disk is not inserted (NODISC), the controller 110 determines whether the photo sensor is OFF or the 8 cm disk error detection flag is OFF (step S94). S95).

If it is determined in step S95 that either the photo sensor or the 8 cm disc erroneous detection flag is on (step S95; No), the controller 110 determines that the ejection state is set and ends the process (step S98). .
If it is determined in step S95 that the photo sensor is off or the 8 cm disc error detection flag is off, it is assumed that the disc is not inserted (NODISC) (step S96), and the disc diameter data is cleared and the process is terminated (step S96). Step S97).

As described above, according to the present embodiment, a pair of gate members are provided in the insertion slot, and the disk diameter is mechanically determined from the external dimensions of the disk based on the temporal change in the rotation angle of the gate member accompanying loading. Thus, not only a general disk but also a partially transparent disk, the disk diameter can be reliably detected, and reliable reproduction control can be performed.
Although the above description has been for the playback apparatus, the present invention can also be applied to the recording / playback apparatus.
In the above description, only the case of the 8 cm disk and the 12 cm disk has been described, but the present invention can be applied to a disk having other dimensions by the same method. Further, the present invention can be similarly applied to a disc having three or more types of diameters.

1 is a perspective view showing an embodiment of a disc player according to the present invention. It is the perspective view which removed the upper chassis. It is a perspective view of a lower chassis. It is the perspective view of the left view which attached the drive unit to the lower chassis. It is the perspective view of the right view which attached the drive unit to the lower chassis. It is a perspective view which shows a pair of gate member. It is a perspective view which shows the state which opened a pair of gate member with a 12 cm disk. It is a perspective view which shows the state which opened a pair of gate member with the 8 cm disk. A is a perspective view of the upper chassis as viewed from the back side, and B is a view showing a vertical hole. It is sectional drawing at the time of inserting an 8 cm disc. It is a perspective view at the time of inserting an 8-cm disc. It is sectional drawing at the time of inserting a 12 cm disc. It is a perspective view at the time of inserting a 12 cm disc. It is a block diagram of a control system. It is a process flowchart (the 1) at the time of disk loading. It is a process flowchart (the 2) at the time of disk loading. It is explanatory drawing of the initial state before disk loading. It is explanatory drawing immediately after disk loading. It is explanatory drawing at the time of loading a 12cm disc. It is explanatory drawing when a disk is loaded in the normal position. FIG. 10 is an explanatory diagram of a disk loading retry process. It is a process flowchart (the 1) of a loading retry process. It is a process flowchart (the 2) of a loading retry process. It is a process flowchart (the 1) of a full eject process. It is a process flowchart (the 2) of a full eject process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 3 Chassis 5 Lower chassis 7 Upper chassis 23 Insertion slot 59 Gate member 62,63 Turn plate 62X Protrusion part 62Y Sliding part 64,65 Pin (support member)
67, 68 Gate pin 73 Connecting plate 74, 75 Guide hole 76, 77 Guide portion 81, 82 Guide bar 83, 85 Disc contact portion 100, 200 Disc 107A, 170B Arc groove 110 Controller (disc diameter discriminating portion)
SWA loading switch (first detector, mechanical switch)
SWB reloading switch (second detector, mechanical switch)
SWC chucking switch RK1, RK2 Loading path

Claims (8)

In a disc player that loads and plays the disc inserted into the insertion slot inside the main body,
A pair of gate members that are arranged substantially at the center of the insertion slot and rotate while contacting the outer periphery of the disk to be inserted, and retreat to the side of the insertion slot,
A first detection unit that detects that a rotation angle of the gate member is equal to or greater than a first rotation angle as the disk passes;
A second detection unit that detects that a rotation angle of the gate member is equal to or larger than a second rotation angle larger than the first rotation angle as the disk passes;
A disc diameter discriminating unit for discriminating the diameter of a disc to be loaded based on a temporal change in the detection state of the first detection unit and the detection state of the second detection unit accompanying the loading;
A disc player comprising: The disc player according to claim 1, wherein
The disk diameter detecting unit determines that a disk having a first diameter has been loaded when only the first detecting unit is in a detection state from the start of loading to the end of loading accompanying the loading. ,
When both the first detection unit and the second detection unit are in a detection state from the start of loading to the end of loading accompanying the loading, the second detection unit has a second diameter larger than the first diameter. Determine that the disc is loaded,
A disc player characterized by the above. The disc player according to claim 1 or 2,
The first detection unit and the second detection unit have a mechanical switch,
At least one of the gate members is provided with an operation holding portion that operates the mechanical switch as the disk is rotated by passing the disk and holds the state in a predetermined rotation angle range. A disc player. The disc player according to any one of claims 1 to 3,
A disc player comprising: a disc diameter data storage unit for storing a discrimination result of the disc diameter discrimination unit as disc diameter data. The disc player according to any one of claims 1 to 4,
A disc player comprising: a lock portion that prevents the pair of gate members from being retracted to the side when the disc is inserted with a side shift from a substantially center of the insertion slot. The disc player according to any one of claims 1 to 5,
A disc player characterized in that the pair of gate members are urged toward the center of the insertion port by an urging member. A disc that is disposed in the insertion slot in a substantially centered manner, has a pair of gate members that retreat to the side of the insertion slot while rotating in contact with the outer periphery of the inserted disk, and is inserted into the insertion slot. In a disc player that loads and plays back to the inside of the main body,
A first detection step of detecting that a rotation angle of the gate member is equal to or greater than a first rotation angle as the disk passes;
A second detection step of detecting that the rotation angle of the gate member is equal to or greater than a second rotation angle larger than the first rotation angle as the disc passes;
A disc diameter discriminating process for discriminating the diameter of a disc to be loaded based on a temporal change in the detection state of the first detection unit and the detection state of the second detection unit accompanying the loading;
A control method for a disc player, comprising: A pair of gate members that are arranged in the insertion slot in a substantially centered manner and rotate in contact with the outer periphery of the disk to be inserted while retreating to the side of the insertion slot, and the rotation angle of the gate member is A first detection unit that detects that the rotation angle is equal to or greater than one rotation angle; and a second detection that detects that the rotation angle of the gate member is greater than or equal to a second rotation angle greater than the first rotation angle. A control program for controlling, by a computer, a disc player that loads and reproduces the disc inserted into the insertion slot inside the main body.
Detecting whether the rotation angle of the gate member is equal to or greater than the first rotation angle as the disk passes;
Detecting whether or not the rotation angle of the gate member is equal to or greater than a second rotation angle larger than the first rotation angle as the disc passes;
Discriminating the diameter of the loading target disk based on the temporal change of the detection state of the rotation angle accompanying the loading;
A control program characterized by that.

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