JP3568190B2 - Slot-in type optical disc playback device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a slot-in type optical disc reproducing apparatus, and more particularly, to a slot-in type optical disc reproducing apparatus capable of reliably discharging a nonstandard optical disc.
[0002]
[Prior art]
There is a slot-in type CD player in which a normal CD having a diameter of 12 cm or a single CD having a diameter of 8 cm can be directly inserted from a slot portion without being placed on a tray. FIG. 24 shows a configuration around a slot-in type loading section of a conventional slot-in type CD player. Reference numeral 1 denotes a front panel, which is provided with a slot portion 4 for inserting and removing a normal CD 2 of 12 cm or a single CD 3 of 8 cm. Of CD2 or single CD3, 2a or 3a is a central hole, 2b or 3b is a signal recording surface area on which a signal is recorded, and has a property of reflecting light. 2c or 3c is a transparent region between the center hole 2a or 3a and the innermost periphery of the signal recording surface region 2b or 3b, and 2d or 3d is a region between the outermost periphery of the signal recording surface region 2b or 3b and the outermost periphery of the disk. It is a small transparent area.
[0003]
Reference numeral 5 denotes a turntable as a rotating unit which is rotated by a spindle motor (not shown) mounted on a chassis (not shown), and has a central portion into which a center hole 2a or 3a of a CD2 or a single CD3 is detachably fitted. A part 6 is formed. Reference numeral 7 denotes an optical pickup, which irradiates the signal recording surface area 2b or 3b with a laser beam while moving in the disk radial direction below a CD2 or a single CD3 which is mounted on the turntable 5 and rotated at a predetermined linear velocity. Then, it captures the reflected beam and outputs a light detection signal. An RF signal is generated from the light detection signal by a head amplifier (not shown), and the signal processing unit demodulates music data.
[0004]
Reference numeral 10 denotes a slot-in type loading mechanism that operates on a chassis (not shown), 11 denotes a loading motor that is combined with the slot-in type loading mechanism 10 to generate a driving force, and 12 denotes a driving unit that drives the loading motor 11. These three members constitute a slot-in type loading section. When the slot-in type loading mechanism unit 10 is driven by the normal rotation of the loading motor 11 from the disk ejection completed state, the CD 2 or the single CD 3 inserted from the slot unit 4 is moved onto the internal turntable 5. Thereafter, a lowering operation is performed in which the center hole 2a or 3a is fitted into the convex portion 6 of the turntable 5 to bring the disk into a loaded state. Conversely, when the unloading drive is performed by the reverse rotation of the loading motor 11 from the loaded state of the disc, the CD 2 or the single CD 3 is lifted to disengage the center hole 2 a or 3 a from the projection 6 of the turntable 5 and then the slot 4 The unloading operation of moving in the direction of is performed.
[0005]
Reference numeral 13 denotes a disk detection unit mounted on a chassis (not shown), which includes a pair of light emitting elements 14 and light receiving elements 15. The disk detector 13 is installed at a distance of 10 cm, which is between the radius of the CD2 and the radius of the single CD3, in the direction of the slot 4 when viewed straight from the center of the turntable 5, and directly above the CD2 or the single CD3. When the signal recording surface area 2b or 3b comes in, light emitted from the light emitting element 14 through an opening (not shown) provided in the slot-in type loading mechanism unit 10 is transmitted to the signal recording surface area 2b or 3b of the CD2 or single CD3. Then, the light is received by the light receiving element 15, and the light receiving element 15 outputs an H-level detection signal A indicating that a disk is present. When there is no signal recording surface area 2b or 3b of CD2 or single CD3 right above the disk detector 13, light emitted from the light emitting element 14 is not received by the light receiving element 15, and the L level indicating that there is no disk from the light receiving element 15 Is output. The detection output of the disk detector 13 when the disk is in the loaded state on the turntable 5 indicates the disk size (12 cm at H level, 8 cm at L level). When the CD2 or the single CD3 is unloaded, the locus of the intersection between the optical axis of the light emitting element 14 and the CD2 or the single CD3 is arranged so as to cross the center of the center hole 2a or 3a.
[0006]
Reference numeral 16 denotes a loading mechanism for detecting that the loading of the CD 2 or the single CD 3 onto the turntable 5 is completed and outputting an H-level detection signal B by mechanically closing the contacts when the slot-in type loading mechanism 10 completes the loading operation. It is a completion detecting unit. The center hole 2a or 3a of the CD2 or the single CD3 fits into the protrusion 6 of the turntable 5 before the slot-in type loading mechanism 10 completes the loading operation, and the loading is completed.
[0007]
Reference numeral 17 denotes a first disk ejection detection unit mounted on the chassis, which is composed of a pair of light emitting element 18 and light receiving element 19. The first disk ejection detecting section 17 is for detecting that the CD 2 of 12 cm has arrived at a predetermined ejection position, and is separated from the center of the turntable 5 by a predetermined distance in an oblique direction on the slot 4 side. During the unloading operation, while the signal recording surface area 2b of the CD 2 is directly above the light-emitting element 18 through an opening (not shown) provided in the slot-in type loading mechanism 10, Is reflected by the signal recording surface area 2b of the CD 2 and is received by the light receiving element 19, from which an H level detection signal C indicating that the disk is not at the ejection position is output. . When the unloading operation proceeds and the CD 2 goes out of the slot portion 4 by about half, the edge of the CD 2 comes right above the first disc ejection detection unit 17 and the signal of the CD 2 is recorded on the optical axis of the light emitting element 18. There is no surface area 2b, the light emitted from the light emitting element 18 is not received by the light receiving element 19, and an L level detection signal C indicating that the disk has reached the ejection position is output from the light receiving element 19. .
[0008]
Reference numeral 20 denotes a second disk ejection detection unit mounted on the chassis, which is composed of a pair of a light emitting element 21 and a light receiving element 22. The second disk ejection detection section 20 is for detecting that a single CD 3 of 8 cm has arrived at a predetermined ejection position. The second disc ejection detection section 20 has a predetermined distance obliquely on the side of the slot section 4 when viewed from the center of the turntable 5. And during the unloading operation, while the signal recording surface area 3b of the single CD 3 is directly above the unloading operation, through an opening (not shown) provided in the slot-in type loading mechanism unit 10. The light emitted from the light emitting element 21 is reflected by the signal recording surface area 3b of the single CD 3 and then received by the light receiving element 22, and an H level detection signal D indicating that the disk has not come to the ejection position from the light receiving element 22. Is output. When the unloading operation progresses and the single CD 3 goes out of the slot section 4 by about half, the edge of the single CD 3 comes right above the second disk ejection detection section 20 and the single CD 3 is placed on the optical axis of the light emitting element 21. The signal recording surface area 3b is not present, the light emitted from the light emitting element 21 is not received by the light receiving element 22, and the L level detection signal D indicating that the disk has come to the ejection position from the light receiving element 22 is output. Is output.
[0009]
Reference numeral 23 denotes an operation unit having various operation keys such as an eject key, a PLAY key, and a STOP key for performing an eject operation; and 24, a control unit having a microcomputer configuration that controls the entire control of the player. When a single CD 3 is inserted from the slot section 4, the slot-in type loading section is controlled to perform a loading operation. Conversely, when an eject key is pressed and an eject operation is performed while a disc is loaded, slot-in type loading is performed. The section is controlled to perform an unloading operation. When the PLAY key is pressed while the disc is loaded, the control unit 24 controls the optical pickup 7, a head amplifier and a signal processing unit (not shown), and rotates the turntable 4 by the spindle motor to control the CD2 or the single unit. Playback of CD3 is performed.
[0010]
FIGS. 25 and 26 are flowcharts showing the control processing of the control unit 24, and FIGS. 27 to 32 are explanatory diagrams of the loading / unloading operation. The loading / unloading operation in the slot-in type CD player will be described with reference to these drawings. The unloading operation will be described. At first, it is assumed that the CD 2 or the single CD 3 is not loaded on the turntable 5 as shown in FIG. 24, and A to D are all at L level.
[0011]
When the user inserts the CD 2 or the single CD 3 from the slot section 4, the signal recording area 2 b or 3 b comes over the disc detecting section 13 and the light emitted from the light emitting element 14 is received by the light receiving element 15, The element 15 outputs the H-level detection signal A indicating the presence of the disk (see FIG. 27A or FIG. 30A). When the detection signal A becomes the H level, the control unit 24 determines that the disk has been inserted (YES in step S10 in FIG. 25), controls the drive unit 12 to rotate the loading motor 11 forward at a constant speed, and performs slot-in. The loading mechanism 10 is driven for loading (step S11). As a result, the CD 2 or the single CD 3 is moved from the slot portion 4 to the turntable 5, and the center hole 2a or 3a is fitted into the convex portion 6 (see FIG. 27 (2) or FIG. 30 (2). The CD2 or the single CD3 is chucked by a chucking mechanism (not shown) interlocked with the in-type loading mechanism 10). Thereafter, the contact of the loading completion detecting section 16 is closed in conjunction with the loading operation of the slot-in type loading mechanism 10, and an H level detection signal B indicating the completion of loading of the disk is output.
[0012]
When the detection signal B becomes the H level, the control unit 24 determines that the loading of the disk is completed (YES in step S12), controls the drive unit 12 to stop the loading motor 11, and controls the slot-in type loading mechanism unit 10. The loading drive is stopped, and the loading operation of the slot-in type loading mechanism 10 is stopped (step S13). At this time, the detection signal A input from the disk detector 13 is checked to determine the size of the disk loaded this time, and the determination result is stored as SIZE data (step S14). Specifically, when A is at the H level, it is stored as SIZE data = 12 cm, and when A is at the L level, it is stored as SIZE data = 8 cm. When the loading of the CD 2 onto the turntable 5 is completed in this way, the signal recording surface area 2b comes directly above the first disc ejection detection unit 17 and the second disc ejection detection unit 20, and the light is emitted from the light emitting element 18. The received light is received by the light receiving element 19, the detection signal C at the H level is output from the light receiving element 19, and similarly, the light emitted from the light emitting element 21 is received by the light receiving element 22. An H level detection signal D is output (see FIG. 27 (2)). When the loading of the single CD 3 onto the turntable 5 is completed, the signal recording surface area 3b does not come directly above the first disk ejection detection unit 17 and the signal recording surface just above the second disk ejection detection unit 20. When the area 3b comes, the light emitted from the light emitting element 18 is not received by the light receiving element 19, the L level detection signal C is output from the light receiving element 19, and the light emitted from the light emitting element 21 is And an H level detection signal D is output from the light receiving element 22 (see FIG. 30 (2)).
[0013]
Thereafter, when the PLAY key is pressed by the operation unit 23, the control unit 24 rotates the turntable 5 by the spindle motor, and the optical pickup 7, the head amplifier (not shown), and the CD2 or single CD3 are read from the head by the reproduction system of the signal processing unit. The playback is stopped until the end of the CD2 or the single CD3 is completed or the STOP key is pressed (steps S15 to S19).
[0014]
When the user wants to remove the CD2 or the single CD3 loaded on the turntable 5 while the reproduction of the disc is stopped, the user presses the eject key of the operation unit 23 to perform an eject operation. Then, the control unit 24 determines YES in step S20, and proceeds to the flow in FIG. When an eject operation is performed during the reproduction of the disc, the reproduction is stopped, and the process proceeds to the flow of FIG. 26 (YES in step S21, S22). In the flow of FIG. 26, first, the drive unit 12 is controlled to reverse the loading motor 11 at a constant speed to start the unloading drive of the slot-in type loading mechanism unit 10 (step S30). First, the chucking by the chucking mechanism is released in conjunction with the unloading operation of the slot-in type loading mechanism 10. Subsequently, due to the unloading operation of the slot-in type loading mechanism 10, the CD2 or the single CD3 rises and the center hole 2a or 2b comes off the projection 6 of the turntable 5 (at this stage, the contact of the loading completion detection unit 16 Open, and the detection signal B falls to the L level). Next, the CD 2 or the single CD 3 moves straight in the direction of the slot portion 4.
[0015]
If the SIZE data determined and stored at the time of loading the disc is 12 cm after step S30, the control unit 24 indicates that the detection signal C of the first disc ejection detection unit 17 indicates that the disc has reached the ejection position. Waiting for the L level (steps S31 and S32), when C has reached the L level, it is determined that the ejection of the 12 cm CD2 has been completed (see FIG. 28A), and after waiting for a further 130 ms, the drive unit The controller 12 controls the loading motor 11 to stop, stops the unloading drive for the slot-in type loading mechanism 10, and stops the unloading operation of the slot-in type loading mechanism 10 (steps S34, S35). As a result, the ejection of the CD2 of 12 cm is completed, and almost half of the CD2 comes out of the slot 4 to the outside (see FIG. 28 (2)). At this time, the signal recording surface area 2b is located above the disc detection unit 13 and the second disc ejection detection unit 20, and the detection signals A and D are set to the H level.
[0016]
On the other hand, if the SIZE data determined and stored at the time of loading the disc is 8 cm, the detection signal D of the second disc ejection detection unit 20 becomes L level indicating that the disc has reached the ejection position. (Steps S31 and S33), and when D is at the L level, it is determined that the ejection of the single CD3 of 8 cm is completed (see FIG. 31A). After waiting for 130 ms, the drive unit 12 is controlled. Then, the loading motor 11 is stopped to stop the unloading operation of the slot-in type loading mechanism 10 (Steps S34 and S35). As a result, the ejection of the single CD3 of 8 cm is completed, and almost half of the single CD3 comes out of the slot 4 to the outside (see FIG. 31 (2)). At this time, the signal recording surface area 3b is located above the disk detection unit 13, and the detection signal A is set to the H level.
[0017]
After the ejection of the CD2 or the single CD3 is completed, the control unit 24 sets all the detection signals A, C and D from the disc detection unit 13, the first disc ejection detection unit 17 and the second disc ejection detection unit 20 to the L level. The check is repeated and whether the detection signal C or D from the first disc ejection detection unit 17 or the second disc ejection detection unit 20 has risen from the L level to the H level is repeated (steps S36 and S37). When the user removes the CD 2 or single CD 3 from the slot unit 4 after the ejection is completed, at least one of the detection signals A, D, or C becomes L level indicating that there is no disk, so the control unit 24 returns YES in step S36. The process returns to step S10 in FIG. 25, and waits for a new CD2 or single CD3 to be inserted.
If the user wants to listen to the ejected CD2 or single CD3 again, the user pushes the CD2 or single CD3 into the slot portion 4 and the signal recording surface area 2b or 3b of the CD2 or single CD3 detects the first disc ejection. When the signal reaches the section 17 or the second disk ejection detection section 20, one of the detection signals C and D rises from the L level to the H level (see FIG. 29 or 32). Then, the control unit 24 determines YES in step S37, proceeds to step S11 in FIG. 25, and causes the loading operation to be performed in exactly the same manner as described above.
[0018]
[Problems to be solved by the invention]
By the way, as shown by reference numeral 30 in FIG. 33 (1), the signal is recorded only in the same range as the single CD3 of 8 cm, but the size is called the 12 cm cool CD as the normal CD2. Some of the standards are out of compliance. In the center of the cool CD 30 as well, a center hole 30a is provided at the center thereof so as to be detachably fitted to the projection 6 of the turntable 5. The transparent area 30c extends up to a radius of 20 mm outside the central hole 30a, and the signal recording area 30b extends up to a radius of 38 mm outside the transparent area 30c. The entire area outside the signal recording surface area 30b becomes a transparent area 30d. ing.
[0019]
When the cool CD 30 is inserted into the above-mentioned slot-in type CD player, when the signal recording surface area 30b comes over the disk detection unit 13 and the detection signal A becomes H level (see FIG. 34 (1)), Under the control of the control unit 24, the loading operation is performed in substantially the same manner as for a normal CD2 of 12 cm, and the disc is loaded as shown in FIG. 34 (2). Since the transparent region 30d is present, the light emitted from the light emitting element 14 is not reflected and does not enter the light receiving element 15, so that the SIZE data is 8 cm. Therefore, the unloading operation is performed in substantially the same manner as that of the single CD 3 of 8 cm. When the unloading operation is stopped, the operation is as shown in FIG.
[0020]
However, as shown by reference numeral 31 in FIG. 33 (2), the cool CD has a center hole 31a at the center thereof, which is removably fitted to the projection 6 of the turntable 5, and the outside of the center hole 31a. The radius of the transparent area 31c is up to a radius of 20 mm, the area outside the transparent area 31c up to a radius of 38 mm is a signal recording surface area 31b, and the entire area outside the signal recording area 31b is a transparent area 31d. In some cases, a label 32 sticks out of the area above 31c or 31d.
[0021]
Since the label 32 functions as a reflection surface for light, when the cool CD 31 is inserted into the above-mentioned slot-in type CD player, the signal recording surface area 31b or the label 32 comes on the disc detection unit 13 and the detection signal A becomes H level. When the level reaches the level (see FIG. 36A), the loading operation is performed under the control of the control unit 24 in substantially the same manner as for a normal CD2 of 12 cm. Here, for example, when the disc is loaded as shown in FIG. 36 (2), the label 32 comes over the disc detection unit 13 in the discrimination of the size upon completion of the disc loading, so that the light emitted from the light emitting element 14 is reflected. Then, the light is incident on the light receiving element 15, so that the SIZE data becomes 12 cm. Then, the unloading operation is stopped when 130 ms elapses after the first disc ejection detection unit 17 detects that the disc has come to the ejection position and the detection signal C goes to the L level as in the case of the 12 cm CD2. Will be. For example, when the state of the cool CD 31 at the time of the eject operation is as shown in FIG. 37A and the label 32 has not come on the disk detecting unit 13, the unloading operation is started immediately after the start of the unloading operation. Since the cool CD 31 is stopped, the cool CD 31 remains in the set and cannot be taken out (see FIG. 37 (2)). The same problem occurs when a picture is drawn instead of the label in the area where the label 32 is attached.
An object of the present invention is to provide a slot-in type optical disc reproducing apparatus capable of preventing a non-standard optical disc from being unremovable even if it is inserted, in view of the above-mentioned problems of the related art.
[0022]
[Means for Solving the Problems]
In the slot-in type optical disc reproducing apparatus according to the first aspect of the present invention, a slot for inserting and removing the optical disc, a rotating section for rotating the optical disc to read a recording signal, and moving the optical disc from the slot to the rotating section. A slot-in type loading unit that performs a loading operation for loading by loading and an unloading operation for moving and ejecting the optical disk from the rotating unit to the slot unit, and a predetermined distance in the direction of the slot unit when viewed from the center of the rotating unit. A first detecting unit including the pair of light emitting / receiving elements provided, a second detecting unit for detecting that the optical disc has been loaded into the rotating unit by the loading operation of the slot-in type loading unit, and a slot-in type. When the unloading operation of the loading section detects that the optical disc has reached the predetermined ejection position, When the optical disc is inserted from the slot with no optical disc loaded, the slot-in type loading section is controlled to start the loading operation, and the optical disc is loaded into the rotating section by the second detection section. When the loading operation is stopped at the position where it is detected that the eject operation is performed by the eject operation unit while the optical disc is loaded, the slot-in type loading unit is controlled to start the unloading operation, and the third detection unit performs the operation. A loading control unit for stopping the unloading operation when it is detected that the optical disk has reached the ejection position, so that the center hole of the optical disk passes through the optical axis of the light emitting element of the first detection unit during the unloading operation. In the slot-in type optical disc reproducing apparatus constructed as described above, the loading control unit operates in an optical disc loaded state. When the eject operation is performed by the eject operation unit, the slot-in type loading unit is controlled to start the unloading operation, and thereafter, after the first detection unit changes from the optical disk detection state to the non-detection state, the third detection unit performs the third operation. The unloading operation is stopped when the detection unit detects that the optical disk has reached the ejection position.
According to the slot-in type optical disc reproducing apparatus of the present invention, when the eject operation is performed by the eject operation section in the loaded state of the optical disc, the slot-in type loading section is controlled to start the unloading operation, and the optical disc at the center of the optical disc is controlled. When the optically transparent part comes to the first detection unit and the first detection unit changes from the optical disk detection state to the non-detection state, the third detection unit detects that the optical disk has come to the ejection position. When detected, the unloading operation is stopped. With this, if the optical disc conforms to the standard, the unloading operation is stopped when the optical disc finally reaches the predetermined discharge position, so that an appropriate discharge amount from the slot portion to the outside can be secured. Even if the optical disc is out of the standard, even after the unloading operation is started, even if the third detection unit outputs a detection output indicating that the third detection unit has erroneously arrived at the ejection position due to the non-standard, the center hole in the center of the optical disc and the center hole of the center hole are not Unloading is forcibly ejected without stopping the unloading operation until the optically transparent portion including the surrounding transparent area comes to the first detecting section, and then the optical disc is ejected by the third detecting section. Since the unloading operation is stopped at a position where the optical disk has been detected again, it is possible to secure an appropriate discharge amount to the outside from the slot portion and to prevent the user from being unable to take out the optical disk.
According to a second aspect of the present invention, in the slot-in type optical disc reproducing apparatus according to the first aspect, the loading control section starts the unloading operation, and thereafter, the first detecting section continues from the optical disc detection state for a predetermined time or more. After the change to the non-detection state occurs, the unloading operation is stopped when the third detection unit detects that the optical disk has reached the ejection position.
According to the second aspect of the present invention, the first detection is performed immediately after the unloading operation is started because an annular label is affixed to a transparent area on the outer peripheral side of a nonstandard optical disc or a picture is drawn. Even if a change from the optical disk detection state to the non-detection state occurs in the section, if the non-detection state ends within a certain period of time, it is ignored, so that it is possible to avoid stopping the unloading operation while the optical disk is insufficiently discharged. . Also, even if an annular label is affixed to the transparent area around the center hole or a picture is drawn, move as much as possible in the direction of the slot by the forced discharge operation after the start of the unloading operation. The minimum required amount of discharge from the slot portion to the outside can be more reliably secured.
According to a third aspect of the present invention, there is provided a slot-in type optical disc reproducing apparatus, wherein: a slot for inserting and removing optical discs of a plurality of sizes; a rotating section for rotating the optical disc to read a recording signal; A slot-in type loading section that performs a loading operation for moving and loading an optical disc and an unloading operation for moving and ejecting an optical disc from a rotating section to a slot section, and a predetermined distance in the direction of the slot section when viewed from the center of the rotating section. A first detecting section including a pair of light emitting / receiving elements provided at a predetermined position; and a second detecting section for detecting that the optical disc has been loaded into the rotating section by the loading operation of the slot-in type loading section. , A size detector that detects the size of the disk, and a slot-in type Ejection detectors for detecting that the optical disc has reached a predetermined ejection position corresponding to the size by the unloading operation of the loading section, and a slot-in type when an optical disc is inserted from the slot while the optical disc is not loaded. When the loading operation is started by controlling the loading unit, the loading operation is stopped at the point where the optical disc has been loaded into the rotating unit by the second detection unit, and the ejection operation unit performs the ejection operation. Controls the slot-in type loading unit to start the unloading operation, and stops the unloading operation when the ejection detection unit detects that the disc has reached the ejection position according to the disc size detected by the size detection unit. And a loading control section for causing the center hole of the optical disc to detect the first hole during the unloading operation. In the slot-in type optical disc reproducing apparatus in which the light passes through the optical axis of the light-emitting element, the loading control section controls the slot-in type loading section to perform the unloading operation when the eject operation section performs the eject operation while the optical disc is loaded. The operation is started, and thereafter, after the first detection unit changes from the optical disk detection state to the non-detection state, the ejection detection unit corresponding to the disk size detected by the size detection unit detects that the disc has reached the ejection position. Is detected, the unloading operation is stopped.
According to the slot-in type optical disc reproducing apparatus of the third aspect, when an eject operation is performed by the eject operation section with the optical disc loaded, the slot-in type loading section is controlled to start the unloading operation, and the optical disc at the center of the optical disc is controlled. When the optically transparent portion comes to the first detecting portion and the first detecting portion changes from the optical disk detecting state to the non-detecting state, the optical disk is moved to the discharging position by the discharging detecting portion corresponding to the disk size. When the arrival is detected, the unloading operation is stopped. As a result, if the optical disc conforms to the standard, the unloading operation is stopped when the optical disc finally reaches the predetermined ejection position according to the size, so that an appropriate ejection amount from the slot to the outside is secured. it can. Since the optical disc was out of standard, even after the unloading operation started, even if the ejection detection unit corresponding to the disc size immediately output a detection output indicating that it came to the ejection position by mistake due to non-standard, the center of the center of the optical disc was detected. Unloading operation is forcibly ejected without stopping the unloading operation until the optically transparent portion including the hole and the transparent region around the center hole comes to the first detection unit. The unloading operation is stopped when the optical disc has reached the ejection position again by the corresponding ejection detection unit, so that the minimum necessary ejection amount from the slot to the outside can be secured, and the user cannot take it out. Can be avoided.
According to a fourth aspect of the present invention, in the slot-in type optical disc reproducing apparatus according to the third aspect, the loading control section starts the unloading operation, and thereafter, the first detecting section continues the optical disc detection state for a predetermined time or more. After a change to the detection state occurs, the unloading operation is stopped when the ejection detection unit detects that the disc has reached the ejection position according to the disc size detected by the size detection unit, It is characterized by.
According to the apparatus of the fourth aspect, the first detection is performed immediately after the unloading operation is started because an annular label is affixed to the transparent area on the outer peripheral side of the nonstandard optical disc or a picture is drawn. Even if a change from the optical disk detection state to the non-detection state occurs in the section, if the non-detection state ends within a certain period of time, it is ignored, so that it is possible to avoid stopping the unloading operation while the optical disk is insufficiently discharged. . Also, even if an annular label is affixed to the transparent area around the center hole or a picture is drawn, move as much as possible in the direction of the slot by the forced discharge operation after the start of the unloading operation. And a more appropriate discharge amount from the slot portion to the outside can be secured.
According to a fifth aspect of the present invention, in the slot-in type optical disc reproducing apparatus according to the third or fourth aspect, the optical disc has two sizes, a large size and a small size, and the first detection unit has a large size when viewed from the center of the rotating unit. Since the optical disk is arranged at a distance between the radius of the optical disk and the radius of the small-sized optical disk, and the size detection unit is also used as the first detection unit, the configuration is simplified.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a configuration diagram of a slot-in type CD player according to the present invention, and the same components as those in FIG. 24 are denoted by the same reference numerals.
Reference numeral 24A is a control unit of a microcomputer configuration that controls the entire player, and is a normal CD having a diameter of 12 cm (see reference numeral 2 in FIG. 24), a single CD 3 having a diameter of 8 cm, and a diameter of 12 cm when no disc is loaded. When a variety of CDs such as a cool CD 31 (or a reference numeral 31 in FIG. 33) in the same recording area as the single CD are inserted from the slot section 4, the slot-in type loading mechanism section 10, the loading motor 11, the driving section The loading operation is performed by controlling the slot-in type loading section composed of 12, and the turntable 5 is loaded. Conversely, when the eject key is pressed and the eject operation is performed in the loaded state of the disc, the slot-in type loading section is controlled to perform the unloading operation, and the disc is ejected to a predetermined position according to the disc size. When the PLAY key is pressed while the disk is loaded, the control unit 24A controls the optical pickup 7, a head amplifier and a signal processing unit (not shown) and reproduces the disk while rotating the turntable 5 by the spindle motor. Is performed.
[0024]
The control unit 24A controls the slot-in type loading unit according to the eject operation to start the unloading drive, and then places the signal recording surface area of the disk on the disk detection unit 13 (2b in FIG. 24 or 3b in FIG. 1 or 3b in FIG. 1). After passing through the central optically transparent portion after passing through 31b or 30b in FIG. 33, the disk detecting unit 13 changes from the disk detection state (A is H level) to the disk non-detection state (A is L level). State), and thereafter, the disc comes to the ejection position on the side of the first disc ejection detection unit 17 and the second disc ejection detection unit 20 corresponding to the disc size determined at the time of loading the disc. When the operation is detected, the unloading operation is stopped.
As a result, due to a nonstandard cool CD or the like, immediately after the start of the unloading operation, a detection output indicating that the first disc ejection detection unit 17 or the second disc ejection detection unit 20 has erroneously arrived at the ejection position is output. Also, the unloading operation is forcibly ejected without stopping the unloading operation until the optically transparent portion including the center hole at the center of the disk and the transparent region around the center hole comes to the disk detecting section 13. Thereafter, the unloading operation is stopped when the first or second disc ejection detection unit 17 or the second disc ejection detection unit 20 detects that the optical disc has reached the ejection position. It is possible to secure a minimum required amount of discharge and to prevent the user from being unable to remove the disk.
The other components in FIG. 1 are configured exactly the same as in FIG.
[0025]
FIGS. 2 and 3 are flowcharts showing the control processing of the control unit 24A, and FIGS. 4 to 16 are explanatory diagrams of the unloading operation. The loading / unloading in the slot-in type CD player will be described with reference to these drawings. The operation will be described. At first, it is assumed that the turntable 5 is in a state where no disk is loaded, and all of A to D are at the L level.
[0026]
(1) In the case of a cool CD 30 having no light-reflecting portion other than the signal recording surface area
The user inserts the cool CD 30 shown in FIG. 33 (1) from the slot section 4, the signal recording surface area 30b comes over the disk detecting section 13, and the light emitted from the light emitting element 14 is received by the light receiving element 15. Then, an H-level detection signal A indicating the presence of the disk is output from the light receiving element 15 (see FIG. 34 (1)). When the detection signal A becomes the H level, the control unit 24A determines that the disk has been inserted (YES in step S40 of FIG. 2), controls the drive unit 12 to rotate the loading motor 11 forward at a constant speed, and performs slot-in. The loading drive to the loading mechanism 10 is started, and the loading operation of the loading mechanism 10 is started (step S41). Thereby, the cool CD 30 is moved from the slot portion 4 to the turntable 5, and the center hole 30a is fitted into the convex portion 6, and the disc is loaded (see FIG. 34 (2). At this time, the slot-in type loading mechanism) The cool CD 30 is chucked by a chucking mechanism (not shown) linked to the unit 10). Thereafter, the contact of the loading completion detecting section 16 is closed in conjunction with the loading operation of the slot-in type loading mechanism 10, and an H level detection signal B indicating the completion of loading of the disk is output.
[0027]
When the detection signal B becomes H level, the control unit 24A determines that the loading of the disk is completed (YES in step S42), controls the drive unit 12 to stop the loading motor 11, and controls the slot-in type loading mechanism unit 10. The loading drive is stopped, and the loading operation of the slot-in type loading mechanism 10 is stopped (step S43). At this time, the detection signal A input from the disk detector 13 is checked to determine the size of the disk loaded this time, and the determination result is stored as SIZE data (step S44). Here, the light emitted from the light emitting element 14 does not enter the light receiving element 15 because the transparent area 30d is above the disk detection unit 13, and the A is at the L level, so that the SIZE data = 8 cm. When the loading of the cool CD 30 onto the turntable 5 is completed as described above, the signal recording surface area 30b comes directly above the second disk ejection detection unit 20, and the light emitted from the light emitting element 21 is reflected by the light receiving element 22. The light is received, and the H-level detection signal D is output from the light receiving element 22 (see FIG. 34 (2)).
[0028]
Thereafter, when the PLAY key is pressed on the operation unit 23, the control unit 24A rotates the turntable 5 at a constant linear speed by the spindle motor, and plays the cool CD 30 by the optical pickup 7, a head amplifier (not shown), and a reproduction system of the signal processing unit. The reproduction is started from the beginning and stopped when the reproduction is completed to the end or when the STOP key is pressed (steps S45 to S49).
[0029]
When the user wants to take out the cool CD 30 loaded on the turntable 5 in the playback stopped state, the user presses the eject key of the operation unit 23 to perform an eject operation. Then, the control unit 24A determines YES in step S50, and proceeds to the flow in FIG. If the eject operation is performed during the reproduction of the disc, the reproduction is stopped, and the process proceeds to the flow of FIG. 3 (steps S51 and S52). In the flow of FIG. 3, the control unit 24A first controls the driving unit 12 to rotate the loading motor 11 in the reverse direction to start the unloading drive for the slot-in type loading mechanism unit 10, and to unload the slot-in type loading mechanism unit 10. The loading operation is started (Step S60). First, the chucking by the chucking mechanism is released in conjunction with the unloading operation of the slot-in type loading mechanism 10. Subsequently, by the unloading operation of the slot-in type loading mechanism unit 10, the cool CD 30 is raised and the center hole 30a is disengaged from the convex portion 6 of the turntable 5 (at this stage, the contact point of the loading completion detection unit 16 is opened and the detection is completed). The signal B falls to L level). Next, the cool CD 30 moves straight in the direction of the slot portion 4.
[0030]
After step S60, the control unit 24A checks whether the detection signal A from the disk detection unit 13 is at the H level (step S61). If NO, the control unit 24A waits for the detection signal A to go to the H level, and then proceeds to step S62. Is changed from H level to L level. When the cool CD 30 is loaded on the turntable 5, the detection signal A is at the L level at the start of the unloading operation because the disk detection unit 13 is outside the signal recording surface area 30b. The result is NO (see FIG. 34 (2)). When the signal recording surface area 30b comes above the disk detection unit 13 as the unloading operation proceeds, the light emitted from the light emitting element 14 is reflected by the signal recording surface area 30b and received by the light receiving element 15, and the detection signal A becomes Since the H level indicates the disk detection state, YES is determined in the step S61, and the process proceeds to the step S62 (see FIG. 4A). When the unloading operation proceeds further, since the optical axis of the light emitting element 14 of the disc detection unit 13 is disposed so as to cross just the center of the cool CD 30, the light is emitted from the light emitting element 14 when it enters the transparent area 30c. The received light is no longer received by the light receiving element 15, and the detection signal A goes to the L level in the disk non-detection state. Then, the control unit 24A determines YES in step S62 (see FIG. 4B).
[0031]
Since the SIZE data determined and stored at the time of loading the disc is 8 cm, the detection signal D of the second disc ejection detection unit 20 for the small size becomes L level indicating that the disc has reached the ejection position. (Steps S63 and S65). When D becomes L level, it is determined that the disk has come to the ejection position (see FIG. 5A), and after waiting for a further 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the slot is stopped. The unloading operation for the in-type loading mechanism unit 10 is stopped to stop the unloading operation (steps S66 and S67). As a result, almost half of the cool CD 30 is discharged from the slot 4 to the outside, so that the user cannot be taken out (see FIG. 5 (2)). By taking a waiting time of 130 ms in step S64, the signal recording surface area 30b is brought to a position distant from the second disc ejection detection unit 20, and even if vibration occurs, the second disc ejection detection unit 20 is erroneously set to H level. The level can not be output. When the unloading operation is stopped, the signal recording surface area 30b comes above the disc detection unit 13, so that the detection signal A goes high.
[0032]
When the cool CD 30 from which the ejection has been completed is taken out, the disc detection unit 13 outputs an L-level detection signal indicating that there is no disc, so the control unit 24A determines YES in step S68 and returns to step S40 in FIG.
If the user presses the cool CD 30 into the slot 4 in order to listen again to the once-discharged cool CD 30, the detection signal is output when the signal recording surface area 30 b comes over the second disc discharge detecting section 20. D changes from L to H level (see FIG. 6). Then, the control unit 24A determines YES in step S69, proceeds to step S41 in FIG. 2, and causes the loading operation to be performed in exactly the same manner as described above.
[0033]
(2) When a normal 8cm single CD is inserted
When the cool CD 30 is taken out and a single CD 3 of 8 cm shown in FIG. 1 is inserted from the slot section 4 instead, the signal recording surface area 3b comes on the disc detecting section 13 in the same manner as in (1) and the H level becomes high. When the detection signal A is input (see (1) in FIG. 30), the loading drive is started, and the loading drive is stopped when the H-level detection signal B is output from the loading completion detection unit 16 (see FIG. 2). Steps S40 to S43 (see FIG. 30 (2)). Then, the detection signal A input from the disk detection unit 13 is checked to determine the size of the disk loaded this time, and the determination result is stored as SIZE data (step S44). Here, since A is at the L level, SIZE data = 8 cm. When the PLAY key is pressed by the operation unit 23, the control unit 24A rotates the turntable 5 at a constant linear speed by the spindle motor, and reproduces the single CD3 from the beginning by the reproduction system of the optical pickup 7, the head amplifier (not shown), and the signal processing unit. Then, the reproduction is stopped when the reproduction is completed to the end or the STOP key is pressed (steps S45 to S49).
[0034]
When the user wants to take out the cool CD 30 loaded on the turntable 5 in the playback stopped state, the user presses the eject key of the operation unit 23 to perform an eject operation. Then, the control unit 24A determines YES in step S50, and proceeds to the flow in FIG. If the eject operation is performed during the reproduction of the disc, the reproduction is stopped, and the process proceeds to the flow of FIG. 3 (steps S51 and S52). In the flow of FIG. 3, the control unit 24A first controls the driving unit 12 to rotate the loading motor 11 in the reverse direction to start the unloading drive for the slot-in type loading mechanism unit 10, and to unload the slot-in type loading mechanism unit 10. The loading operation is started (Step S60). Then, it is checked whether the detection signal A from the disk detector 13 is at the H level (step S61). In the case of a single CD3, as shown in FIG. Since it is outside the surface area 3b and is NO, it waits for the H level. When the signal recording surface area 3b comes above the disk detection unit 13 as the unloading operation proceeds, the detection signal A becomes H level indicating the disk detection state, so that YES is determined in the step S61 and the process proceeds to the step S62 (FIG. 7 (1)). When the unloading operation further proceeds, since the optical axis of the light emitting element 14 of the disk detection unit 13 is disposed so as to traverse the center of the single CD 3, the detection signal A is output when the disk enters the transparent area 3 c. It becomes L level which is the detection state. Then, the control unit 24A determines YES in step S62 (see FIG. 7B).
[0035]
Since the SIZE data determined and stored at the time of loading the disc is 8 cm, the detection signal D of the second disc ejection detection unit 20 for the small size becomes L level indicating that the disc has reached the ejection position. (Steps S63 and S65). When D becomes L level, it is determined that the disk has reached the ejection position (see FIG. 8A). After waiting for a further 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the slot is stopped. The unloading operation for the in-type loading mechanism unit 10 is stopped to stop the unloading operation (steps S66 and S67). As a result, almost half of the single CD 3 is discharged from the slot portion 4 to the outside, and the user cannot be taken out (see FIG. 8 (2)).
[0036]
(3) When a normal 12 cm CD is inserted
When a single CD 3 is taken out and a normal CD 2 of 12 cm shown in FIG. 24 is inserted from the slot section 4 instead, the signal recording surface area 2b comes on the disc detecting section 13 and the H level detection signal A is inputted. Then, the loading drive is started (steps S40 and S41 in FIG. 2; see FIG. 27A), and the loading drive is stopped when the H-level detection signal B is output from the loading completion detection unit 16 (step S42). , S43, see FIG. 27 (2)). Then, the detection signal A input from the disk detection unit 13 is checked to determine the size of the disk loaded this time, and the determination result is stored as SIZE data (step S44). Here, since the signal recording surface area 2b comes above the disk detection unit 13 and A goes to the H level, SIZE data = 12 cm.
Thereafter, when the PLAY key is pressed by the operation unit 23, the control unit 24A rotates the turntable 5 at a constant linear velocity by the spindle motor, and starts the CD2 by the reproduction system of the optical pickup 7, the head amplifier (not shown), and the signal processing unit. Then, the reproduction is stopped until the reproduction is completed to the end or the STOP key is pressed (steps S45 to S49).
[0037]
When the user wants to take out the cool CD 30 loaded on the turntable 5 in the playback stopped state, the user presses the eject key of the operation unit 23 to perform an eject operation. Then, the control unit 24A determines YES in step S50, and proceeds to the flow in FIG. If the eject operation is performed during the reproduction of the disc, the reproduction is stopped, and the process proceeds to the flow of FIG. 3 (steps S51 and S52). In the flow of FIG. 3, the control unit 24A first controls the driving unit 12 to rotate the loading motor 11 in the reverse direction to start the unloading drive for the slot-in type loading mechanism 10, and to unload the slot-in type loading mechanism 10. The loading operation is started (Step S60). Then, it is checked whether the detection signal A from the disk detector 13 is at the H level (step S61). In the case of CD2, when the disk is loaded, as shown in FIG. Since it is below the area 2b and YES, the process proceeds to step S62. When the unloading operation further proceeds, since the optical axis of the light emitting element 14 of the disk detection unit 13 is disposed so as to cross the center of the CD 2, the disk detection unit 13 is located under the transparent area 2c. The detection signal A goes to the L level in the disk non-detection state. Then, the control unit 24A determines YES in step S62 (see FIG. 9A).
[0038]
Since the SIZE data determined and stored at the time of loading the disc is 12 cm, the detection signal C of the large-size first disc ejection detection unit 17 becomes L level indicating that the disc has reached the ejection position. (Steps S63 and S64). When C becomes the L level, it is determined that the disk has come to the ejection position (see FIG. 9B), and after taking a further waiting time of 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the slot is stopped. The unloading operation for the in-type loading mechanism unit 10 is stopped to stop the unloading operation (steps S66 and S67). As a result, almost half of the CD 2 is ejected from the slot 4 to the outside, and the user cannot take it out (see FIG. 10).
[0039]
(4) In the case of a cool CD with a label protruding from the transparent area on the outer peripheral side and the transparent area on the inner peripheral side
The user inserts the cool CD 31 shown in FIG. 1 from the slot section 4, the signal recording surface area 31 b or the label 32 comes over the disc detecting section 13, and the light emitted from the light emitting element 14 is received by the light receiving element 15. Then, an H-level detection signal A indicating the presence of the disk is output from the light receiving element 15 (see FIG. 36A). When the detection signal A becomes the H level, the control unit 24A determines that the disk has been inserted (YES in step S40 of FIG. 2), controls the drive unit 12 to rotate the loading motor 11 forward at a constant speed, and performs slot-in. The loading mechanism 10 is driven for loading (step S41). Thereby, the cool CD 31 is moved from the slot portion 4 to the turntable 5, and the center hole 31a is fitted into the convex portion 6 to be loaded (at this time, a chuck (not shown) interlocked with the slot-in type loading mechanism 10). The cool CD 31 is chucked by the king mechanism section). Thereafter, the contact of the loading completion detecting section 16 is closed in conjunction with the loading operation of the slot-in type loading mechanism 10, and an H level detection signal B indicating the completion of loading of the disk is output.
[0040]
When the detection signal B becomes H level, the control unit 24A determines that the loading of the disk is completed (YES in step S42), controls the driving unit 12 to stop the loading motor 11, and stops the loading mechanism 11 of the slot-in type loading mechanism unit 10. The loading drive is stopped (step S43). At this time, the detection signal A input from the disk detector 13 is checked to determine the size of the disk loaded this time, and the determination result is stored as SIZE data (step S44). Here, the label 32 has come above the disk detection unit 13, and the light emitted from the light emitting element 14 is reflected on the back surface of the label 32 and enters the light receiving element 15, and A is at the H level. It is assumed that data = 12 cm (see FIG. 36 (2)). When the loading of the cool CD 31 onto the turntable 5 is completed as described above, the signal recording surface area 31 b comes directly above the second disk ejection detection unit 20, and the light emitted from the light emitting element 21 is reflected by the light receiving element 22. The light receiving element 22 outputs a detection signal D at an H level.
[0041]
Thereafter, when the PLAY key is pressed on the operation unit 23, the control unit 24A rotates the turntable 5 at a constant linear speed by the spindle motor, and plays the cool CD 31 by the optical pickup 7, a head amplifier (not shown), and the reproduction system of the signal processing unit. The reproduction is started from the beginning and stopped when the reproduction is completed to the end or when the STOP key is pressed (steps S45 to S49).
[0042]
When the user wants to take out the cool CD 31 loaded in the turntable 5 and in the playback stopped state as shown in FIG. 11A, the user presses the eject key of the operation unit 23 to perform an eject operation. Then, the control unit 24A determines YES in step S50, and proceeds to the flow in FIG. When the eject operation is performed during the reproduction, the reproduction is stopped, and the process proceeds to the flow of FIG. 3 (steps S51 and S52). In the flow of FIG. 3, the control unit 24A controls the driving unit 12 to reverse the loading motor 11 at a constant speed to start the unloading drive for the slot-in type loading mechanism 10 and to control the slot-in type loading mechanism 10 The unloading operation is started (Step S60). First, the chucking by the chucking mechanism is released in conjunction with the unloading operation of the slot-in type loading mechanism 10. Subsequently, by the unloading operation of the slot-in type loading mechanism unit 10, the cool CD 31 is raised and the center hole 31a is disengaged from the convex portion 6 of the turntable 4 (at this stage, the contact point of the loading completion detection unit 16 is opened and the detection is completed). The signal B falls to L level). Next, the cool CD 31 moves straight in the direction of the slot section 4.
[0043]
After step S60, the control unit 24A checks whether the detection signal A from the disk detection unit 13 is at the H level (step S61). In the state of FIG. 11A, the disk detection unit 13 sets the signal recording surface area 31b. And is outside the label 32, and since it is NO, it waits until it becomes H level. When the signal recording surface area 31b comes above the disk detection unit 13 as the unloading operation proceeds, the detection signal A becomes H level indicating the disk detection state, so that YES is determined in the step S61 and the process proceeds to the step S62 (FIG. 11 (2)). When the unloading operation further proceeds, since the optical axis of the light emitting element 14 of the disk detection unit 13 is disposed so as to cross just the center of the cool CD 31, the detection signal A enters the transparent area 31c and the detection signal A It becomes L level which is the detection state. Then, the control unit 24A determines YES in step S62 (see FIG. 12A).
[0044]
Since the SIZE data determined and stored at the time of loading the disc is 12 cm, the detection signal C of the large-size first disc ejection detection unit 17 becomes L level indicating that the disc has reached the ejection position. (Steps S63 and S64). When the cool CD 31 is in the state shown in FIG. 11A when the eject operation is performed, the detection signal C has fallen to the L level from the start of the unloading operation. Since the unloading operation is forcibly progressed until 31c comes over the disc detection unit 13, when YES is obtained in step S62, the label 32 comes over the first disc ejection detection unit 17, and the detection signal C is at the H level.
Thereafter, when the edge of the label 32 comes over the first disc ejection detection unit 17 and C becomes L level, it is determined that the disc has come to the ejection position (YES in step S64, see FIG. 12 (2)). After waiting for a further 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the unloading drive to the slot-in type loading mechanism 10 is stopped to stop the unloading operation (steps S66 and S67). . As a result, almost half of the single CD 3 is ejected from the slot portion 4 to the outside, and the user cannot be taken out (see FIG. 13).
[0045]
If the size data determined at the time of loading the disc is 12 cm and the cool CD 31 at the time of performing the eject operation is in the state shown in FIG. 14A, the label 32 is present on the disc detecting unit 13 so that the detection is performed. Signal A is at H level. Therefore, since the determination in step S61 after the start of the unloading operation is YES, the process immediately proceeds to step S62, in which the transparent area 31c of the cool CD 31 without the label 32 comes above the disc detection unit 13 When YES is obtained in S62, the detection signal C is at the L level because there is no label 32 on the first disk ejection detection unit 17, and YES is immediately determined in step S64 (see FIG. 14 (2)). After a waiting time of 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the unloading drive to the slot-in type loading mechanism unit 10 is stopped (see FIG. 15). Even in this case, the unloading operation proceeds forcibly until the transparent area 31c of the cool CD 31 comes above the disc detection unit 13, so that a minimum necessary discharge amount can be secured.
[0046]
When the disc size determined at the time of loading the disc is 8 cm, the process does not proceed to step S64 after step S63, but proceeds to S65, and the detection signal D of the second disc ejection detection unit 20 for the small size comes to the ejection position of the disc. It waits for the L level to indicate that this has occurred. If the cool CD 31 at the time of performing the eject operation is in the state of FIG. 11A, when the ejection is completed, the cool CD 31 is in the state of FIG. It can be taken out as it is.
[0047]
According to this embodiment, when the ejecting operation is performed by the operation unit 23 in the loaded state of the optical disk, the control unit 24A controls the slot-in type loading unit to start the unloading operation, and the optically transparent center of the optical disk. (Including the center hole) comes to the disk detection unit 13 and the disk detection unit 13 changes from the optical disk detection state to the non-detection state, and then the first disk ejection detection unit 17 and the second disk The unloading operation is stopped when it is detected that the optical disk has reached the discharge position on the side corresponding to the disk size detected by the disk detection unit 13 at the time of loading the disk. As a result, if the optical disk conforms to the standard such as a normal CD2 or a single CD3, the unloading operation is stopped when the optical disk finally reaches a predetermined discharge position according to the size. Appropriate emissions to the outside can be secured.
[0048]
On the other hand, since the optical disc was a non-standard optical disc such as the cool CD 31, after the unloading operation was started, the disc detecting unit 17 out of the first disc discharge detecting unit 17 and the second disc discharge detecting unit 20 was loaded when the disc was loaded. Even if it is detected that the optical disk has come to the ejection position immediately on the side corresponding to the disk size detected at 13, the optically transparent portion (including at least the center hole) at the center of the optical disk is located at the disk detecting unit 13. Unloading operation is forcibly ejected without stopping, and after that, among the first disk ejection detection unit 17 and the second disk ejection detection unit 20, the disk detection unit 13 detects the ejection when the disc is loaded. The unloading operation is stopped when the optical disk arrives at the ejection position on the side corresponding to the disk size and is detected again. Since, it is possible to ensure the minimum required emissions to the outside from the slot portion, it can prevent the user can no longer be extracted.
[0049]
The flowchart of FIG. 3 is modified as shown in FIG. 17, and when YES is determined in step S62, a timer for measuring a predetermined time T is started (step S70). Returning to step S62 (YES in step S72), the process proceeds to step S63 only when the time is up before A becomes H (YES in step S71). After a change from the detection state to the non-detection state that lasts for more than T hours, the first disk ejection detection unit 17 and the second disk ejection detection unit 20 use the disk for the disk size detected when the disk is loaded. The unloading drive may be stopped when the discharge is detected. As shown in FIG. 18, T is a cool CD33 in which most of the transparent area 33d on the outer peripheral side, the signal recording surface area 33b, and the transparent area 33c on the inner peripheral side are all covered with the label 34 except for the center hole 33a. During the unloading operation, the time during which the detection signal A is at the L level while the center hole 33a crosses the optical axis of the light emitting element 14 of the disc detection unit 13 is about 20% shorter. For example, if T '= 165 ms, T = 135 ms.
[0050]
According to the flow of FIG. 17, for example, a cool CD 35 is loaded in the set as shown in FIG. 19A, and the cool CD 35 has an annular label 36 on an outer transparent area 35d and an inner transparent area 35c. Assuming that the size is 8 cm in the discrimination when the disc is loaded, the control section 24A starts the unloading drive in step S60 in FIG. Is checked at step S61, the disc detection unit 13 is outside the signal recording surface area 35b and the label 36 in the state of FIG. . When the label 36 comes above the disk detection unit 13 during the progress of the unloading operation, the detection signal A goes to the H level indicating the disk detection state (see FIG. 19 (2)). Wait for the detection signal A to fall to the L level (step S62). When the inner edge of the label 36 comes above the disc detection unit 13 (see FIG. 20A), the detection signal A becomes L level, so YES is determined in the step S62, the process proceeds to the step S70, and the time T is set. Start the timer to measure time.
[0051]
Then, it is checked whether the time is up or the detection signal A becomes H level earlier (steps S71, S72). The distance between the label 36 and the signal recording surface area 35b is much smaller than the diameter of the center hole 35a, and before the time is up, the signal recording surface area 35b comes over the disc detection unit 13 and the detection signal A becomes H level ( FIG. 20 (2)). Then, the control unit 24A determines YES in step S72, returns to step S62, and waits again for the detection signal A to change from H level to L level. After that, since the optical axis of the light emitting element 14 of the disk detection unit 13 is disposed so as to cross just the center of the cool CD 35, it is determined that the detection signal A is in the disk non-detection state when entering the transparent area 35c. L level shown in FIG. Then, the control unit 24A determines YES in step S62 (see FIG. 21A).
[0052]
Then, it is checked which of the time is up and the detection signal A becomes H level again earlier (steps S71, S72). The distance between the signal recording surface area 35b and the label 37 is much smaller than the diameter of the center hole 35a, and the label 37 comes on the disk detection unit 13 before the time is up, and the detection signal A becomes H level again (FIG. 21). (See (2)). Then, the control unit 24A determines YES in step S72, returns to step S62, and waits for the detection signal A to change to the L level. After that, the detection signal A becomes L level indicating that the disk is not detected when the label 37 is removed from above the disk detection unit 13. Then, the control unit 24A determines YES in step S62 (see FIG. 22A).
[0053]
Here, it is checked whether the time is up or the detection signal A becomes H level earlier (steps S71, S72). The transparent area 35c and the center hole 35a inside the label 37 are optically transparent, and the L level of the detection signal A continues for T or more. Therefore, this time the timer expires before A goes to the H level, so the control unit 24A determines YES in step S71 and proceeds to step S63. If the SIZE data determined and stored at the time of loading the disc is 8 cm, the detection signal D of the second disc ejection detection unit 20 for small size becomes L level indicating that the disc has reached the ejection position. (Steps S63 and S65).
Thereafter, when the edge of the signal recording surface area 35b comes over the first disc ejection detection unit 20 and D becomes L level, it is determined that the disc has come to the ejection position (see FIG. 22 (2)), and further 130 ms. After waiting for the waiting time, the drive unit 12 is controlled to stop the loading motor 11, and the unloading drive for the slot-in type loading mechanism unit 10 is stopped to stop the unloading operation (steps S66 and S67; FIG. 23). reference). Even when a picture is drawn at the position where the labels 36 and 37 of the cool CD 35 are attached, the same unloading operation as that of the cool CD 35 is performed.
[0054]
If the CD 2 is inserted instead of the cool CD 35, the signal recording surface area 2b is located above the disc detection unit 13 at the time of starting the unloading drive. When 2c starts, the timer starts. Since the diameter of the transparent region 2c is much larger than the diameter of the center hole 2a, the time is up before A becomes H, and the process proceeds to step S63. Since the rest is exactly the same as the flow of FIG. 3, the operation is stopped in a state where almost half of CD2 is finally discharged (see FIG. 10).
[0055]
When the single CD3 or the cool CD30 is inserted instead of the cool CD35, after the unloading drive starts, when the signal recording surface area 3b or 30b comes above the disc detection unit 13, YES is determined in the step S61, When the transparent area 3c or 30c hangs on the disc detection unit 13, the timer starts. Since the diameter of the transparent region 3c or 30c is much larger than the diameter of the center hole 2a, the time is up before A becomes H, and the process proceeds to step S63. Since the rest is exactly the same as the flow of FIG. 3, the operation is stopped in a state where almost half of the single CD 3 or the cool CD 30 is finally discharged (see FIG. 8 (2) or 5 (2)).
[0056]
According to the modification of FIG. 17, after the control unit 24A starts the unloading operation, and after the disc detection unit 13 changes from the optical disc detection state to the non-detection state that continues for a predetermined time T or more, When it is detected that the disc has come to the ejection position on the side of the disc size detected by the disc detection section 13 at the time of loading the disc, the unloading operation is performed among the first disc ejection detection section 17 and the second disc ejection detection section 20. In the case of an optical disc conforming to the standard, such as CD2 and single CD3, the unloading operation is stopped when the optical disc finally reaches a predetermined discharge position according to the size. An appropriate discharge amount from the slot portion 4 to the outside can be secured.
[0057]
On the other hand, as in the case of the cool CD 35, an annular label 36 is attached to a transparent area on the outer peripheral side of a non-standard optical disc, or a picture is drawn. Even if a change from the optical disk detection state to the non-detection state occurs, it is ignored if the non-detection state ends within a predetermined period of time T, thereby preventing the unloading operation from being stopped while the optical disk is insufficiently discharged. it can. Also, even if an annular label 37 is stuck or a picture is drawn on the transparent area around the center hole, as much as possible in the direction of the slot portion 4 by the forced discharge operation after the start of the unloading operation. And a more appropriate discharge amount from the slot portion 4 to the outside can be secured.
[0058]
In the above embodiment, the disc size is determined immediately after the disc is loaded on the turntable 5, but after the disc is loaded on the turntable 5, the unloading drive is performed in step 60 of FIG. 3 or FIG. The determination may be made before the operation is started (while the disk is being loaded on the turntable 5).
[0059]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the present invention, an optical disk conforming to the standard can be reliably ejected to the outside from the slot portion, and even if the optical disk does not conform to the standard, the minimum required amount of ejection is ensured to prevent the optical disk from being unable to be taken out it can.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a slot-in type CD player according to one embodiment of the present invention.
FIG. 2 is a flowchart illustrating a control process of a control unit in FIG. 1;
FIG. 3 is a flowchart illustrating a control process of a control unit in FIG. 1;
FIG. 4 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 5 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 6 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 7 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 8 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 9 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 10 is an explanatory diagram of the loading / unloading operation of FIG.
11 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 12 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 13 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 14 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 15 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 16 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 17 is a flowchart showing a modification of FIG. 3;
FIG. 18 is an explanatory diagram illustrating an example of an optical disc.
FIG. 19 is an explanatory diagram of a loading / unloading operation according to a modification of FIG.
20 is an explanatory diagram of a loading / unloading operation according to a modification of FIG.
FIG. 21 is an explanatory diagram of a loading / unloading operation according to a modification of FIG.
FIG. 22 is an explanatory diagram of a loading / unloading operation according to a modification of FIG.
FIG. 23 is an explanatory diagram of a loading / unloading operation according to a modification of FIG.
FIG. 24 is a configuration diagram of a conventional slot-in type CD player.
FIG. 25 is a flowchart showing a control process of a control unit in FIG. 24;
FIG. 26 is a flowchart showing a control process of a control unit in FIG. 24;
FIG. 27 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 28 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 29 is an explanatory diagram of the loading / unloading operation of FIG.
30 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 31 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 32 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 33 is an external view of a CD of a type different from the standard.
FIG. 34 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 35 is an explanatory diagram of the loading / unloading operation of FIG.
FIG. 36 is an explanatory diagram of the loading / unloading operation of FIG. 24.
FIG. 37 is an explanatory diagram of the loading / unloading operation of FIG. 24.
[Explanation of symbols]
2 CD
2a, 3a, 30a, 31a, 35a Central hole
2b, 3b, 30b, 31b, 35b Signal recording surface area
2c, 2d, 3c, 3d, 30c, 30d, 31c, 31d, 35c, 35d Transparent area
3 Single CD 4 Slot
5 Turntable 6 Convex part
10 Slot-in type loading mechanism
11 Loading motor 12 Drive unit
13 Disk detector 14, 18, 21 Light emitting element
15, 19, 22 Photodetector 16 Loading completion detection unit
17 First disk ejection detection unit 20 Second disk ejection detection unit
23 operation part 24A control part
30, 31, 35 Cool CD 32, 36, 37 Label

Claims (5)

A slot for loading and unloading the optical disk, a rotating part for rotating the optical disk to read a recording signal, a loading operation for moving the optical disk from the slot to the rotating part, and a loading operation for moving the optical disk from the rotating part to the slot. A slot-in type loading unit that performs an unloading operation for discharging the first unit, and a first detection unit that includes a pair of light-emitting / light-receiving elements provided at a position separated by a predetermined distance in the direction of the slot unit when viewed from the center of the rotating unit; A second detection unit for detecting that the optical disk has been loaded into the rotating unit by the loading operation of the slot-in type loading unit, and the optical disk has reached a predetermined discharge position by the unloading operation of the slot-in type loading unit A third detecting section for detecting that When the disk is inserted, the loading operation is started by controlling the slot-in type loading unit, and the loading operation is stopped when the second detection unit detects that the optical disk is loaded in the rotation unit. When an eject operation is performed by the eject operation section in the loaded state, the slot-in type loading section is controlled to start the unloading operation, and when the third detection section detects that the optical disk has come to the ejection position, the unloading operation is performed. A loading control unit for stopping the operation, wherein during the unloading operation, the center hole of the optical disk passes through the optical axis of the light emitting element of the first detection unit,
The loading control unit controls the slot-in type loading unit to start the unloading operation when the eject operation is performed by the eject operation unit in the loaded state of the optical disk, and thereafter, the first detection unit switches from the optical disk detection state to the non-detection state. The unloading operation is stopped when the third detection unit detects that the optical disc has reached the ejection position after the change of
A slot-in type optical disc reproducing apparatus characterized by the above-mentioned. The loading control unit starts the unloading operation, and after the first detection unit changes from the optical disk detection state to the non-detection state that continues for a predetermined time or more, the third detection unit moves the optical disk to the ejection position. That the unloading operation is stopped when it is detected that
2. The slot-in type optical disk reproducing apparatus according to claim 1, wherein: A slot section for loading and unloading optical discs of a plurality of sizes; a rotating section for rotating the optical disc to read recording signals; a loading operation for moving and loading an optical disc from the slot section to the rotating section; A first including a slot-in type loading unit for performing an unloading operation for moving and ejecting the optical disc, and a pair of light-emitting / light-receiving elements provided at a predetermined distance in a direction of the slot from the center of the rotating unit; A detecting unit, a second detecting unit for detecting that the optical disc has been loaded into the rotating unit by the loading operation of the slot-in type loading unit, and a size detecting unit for detecting the size of the disc. The optical disc is unloaded by the slot-in type loading A plurality of ejection detection units for detecting that the ejection position has been reached, and when an optical disc is inserted from the slot while the optical disc is not loaded, the slot-in type loading unit is controlled to start a loading operation, and the second detection is performed. The loading operation is stopped when the optical disk is detected to be loaded in the rotating unit, and when the eject operation is performed by the eject operation unit, the slot-in type loading unit is controlled to start the unloading operation. A loading control unit that stops the unloading operation when the ejection detection unit according to the disc size detected by the size detection unit detects that the disc has come to the ejection position. A slot-in type optical disc in which the center hole passes through the optical axis of the light emitting element of the first detection unit In the device,
The loading control unit controls the slot-in type loading unit to start an unloading operation when an eject operation is performed by the eject operation unit while the optical disc is loaded, and thereafter, the first detection unit switches from the optical disc detection state to the non-detection state. After the change in the size, the unloading operation is stopped when the ejection detection unit detects that the disc has reached the ejection position according to the disc size detected by the size detection unit,
A slot-in type optical disc reproducing apparatus characterized by the above-mentioned. The loading control unit starts the unloading operation, and after the first detection unit changes from the optical disk detection state to the non-detection state that continues for a predetermined period of time or more, the loading control unit reduces the disk size detected by the size detection unit. The unloading operation is stopped when the corresponding ejection detection unit detects that the disc has reached the ejection position,
4. The slot-in type optical disk reproducing apparatus according to claim 3, wherein: The size of the optical disk is two types, large size and small size, and the first detection unit is disposed at a distance between the radius of the large size optical disk and the radius of the small size optical disk when viewed from the center of the rotating unit. The detection unit also serves as the first detection unit;
The slot-in type optical disk reproducing device according to claim 3 or 4, wherein:

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