JP2000315349A - Optical disk reproducing device utilizing slot-in system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a sub-standard optical disk from becoming a state unable to take out. SOLUTION: A disk detection part 13 consisting of light emitting and light receiving elements 14, 15 is provided on a specified place in a direction of a slot part 4 looking from a turntable 5 so that an intersection point of an optical axis of the light emitting element 14 with an optical disk intersects a center hole of the optical disk in the process of the unloading operation, and 1st, 2nd disk ejection detecting parts 17, 20 for detecting that each of 12 cm and 8 cm CDs comes to the specified ejecting position, are provided at the side of the slot part 4 looking from a center of the table 5. When an eject key is pressed in the loading state of the optical disk, a control part 24A makes a loading part of slot-in system to start the unloading operation, and after the detection part 13 is changed to the non-detection state from the detecting state of the disk, the unloading operation is stopped when the state of the disk attained to the ejecting position is detected by the side of the size discriminated from the output of the disk detection part 13 right after the loading, out of the 1st and 2nd disk ejection detecting parts 17, 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slot-in type optical disk reproducing apparatus, and more particularly to a slot-in type optical disk reproducing apparatus capable of reliably ejecting an optical disk of a non-standard.

[0002]

2. Description of the Related Art A normal CD having a diameter of 12 cm or a diameter of 8 cm
There is a slot-in type CD player in which a single CD of 1 cm can be directly inserted from a slot 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, a slot portion 4 for inserting and removing a normal 12 cm CD2 or a single 8 cm CD3.
Is provided. 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 area between the center hole 2a or 3a and the innermost circumference of the signal recording surface area 2b or 3b, 2d
Or 3d is a narrow transparent area between the outermost circumference of the signal recording surface area 2b or 3b and the outermost circumference of the disk.

[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). A center hole 2a or 3a of a CD2 or a single CD3 is detachably fitted at the center. Convex portions 6 are formed. Reference numeral 7 denotes an optical pickup, which moves in the radial direction of the disc under the CD 2 or the single CD 3 which is mounted on the turntable 5 and rotated at a predetermined linear velocity, and which records the signal recording area 2b or 3b.
Is irradiated with a laser beam, the reflected beam is captured, and a light detection signal is output. An RF signal is generated from the light detection signal by a head amplifier (not shown), and the signal processing unit performs demodulation of 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 loading motor 1.
1 and a slot-in type loading unit is constituted by these three members. 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 raised to release the center hole 2 a or 3 a from the projection 6 of the turntable 5 and then the slot 4 Perform the unloading operation of moving in the direction of.

[0005] Reference numeral 13 denotes a disk detecting unit mounted on a chassis (not shown), and a pair of a light emitting element 14 and a light receiving element 1
5 is comprised. The disk detecting unit 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. CD2 right above the disk detector 13
Or signal recording surface area 2b or 3b of single CD3
When there is no light, the light emitted from the light emitting element 14 is not received by the light receiving element 15, and the light receiving element 15 outputs an L level detection signal A indicating that there is no disk. The detection output of the disk detection unit 13 when the disk is in the loaded state on the turntable 5 indicates the disk size (when the disk is at the H level, 12c
m, 8 cm at L level). CD2 or Single C
When D3 is unloaded, the locus of the intersection of the optical axis of the light emitting element 14 with the CD2 or the single CD3 is arranged so as to cross the center of the center hole 2a or 3a.

Reference numeral 16 denotes that the contact is mechanically closed when the slot-in type loading mechanism 10 completes the loading operation, thereby detecting the completion of the loading of the CD 2 or the single CD 3 onto the turntable 5 and outputting an H level detection signal B. This is a loading completion detection unit that outputs. The center hole 2a or 3a of the CD2 or the single CD3 is fitted to the projection 6 of the turntable 5 before the slot-in type loading mechanism 10 completes the loading operation, and the loading is completed.

Reference numeral 17 denotes a first disk ejection detection unit mounted on the chassis, and a pair of a light emitting element 18 and a light receiving element 19
It is composed of This first disk ejection detection unit 17
Is for detecting that the CD 2 of 12 cm has arrived at the predetermined discharge position, and is installed at a predetermined distance in the diagonal direction on the side of the slot portion 4 when viewed from the center of the turntable 5, During unloading operation, CD2 directly above
While the signal recording surface area 2b is present, light emitted from 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 CD2. The light is received by the light receiving element 19, and an H level detection signal C indicating that the disk is not at the ejection position is output from the light receiving element 19. 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 disk ejection detection section 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 arrived at the ejection position is output from the light receiving element 19. .

Reference numeral 20 denotes a second disk ejection detection unit mounted on the chassis, and a pair of a light emitting element 21 and a light receiving element 22
It is composed of This second disk ejection detection unit 20
Is for detecting that an 8 cm single CD 3 has arrived at a predetermined discharge position, and is installed at a predetermined distance in a diagonal direction on the side of the slot portion 4 when viewed from the center of the turntable 5. During the unloading operation, while the signal recording surface area 3b of the single CD3 exists immediately above,
Light emitted from the light emitting element 21 through an opening (not shown) provided in the slot-in type loading mechanism unit 10 is reflected by the signal recording surface area 3b of the single CD 3 and then received by the light receiving element 22. Outputs an H-level detection signal D indicating that the disk has not come to the ejection position. Unloading operation progresses and single C
When D3 goes out of the slot part 4 by about half,
The edge of the single CD3 comes directly above the second disk ejection detection unit 20, and the signal recording surface area 3b of the single CD3 does not exist on the optical axis of the light emitting element 21, and the light emitted from the light emitting element 21 is the light receiving element. The light receiving element 22 does not receive light, and the light receiving element 22 outputs an L level detection signal D indicating that the disk has reached the ejection position.

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 ejection operation; and 24, a control unit having a microcomputer configuration for controlling the entire control of the player. When a CD2 or a single CD3 is inserted from the slot 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, the slot is stopped. The in-type loading unit is controlled to perform an unloading operation. Control unit 2
When a PLAY key is pressed in a loaded state of the disc, the turntable 4 is rotated by a spindle motor while controlling a reproduction system including an optical pickup 7, a head amplifier and a signal processing unit (not shown) to reproduce a CD2 or a single CD3. Let it do.

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.
At first, as shown in FIG.
It is assumed that D3 is not loaded on the turntable 5, and A to D are all at L level.

When a user inserts a CD 2 or a 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 light receiving element 15
Outputs an H-level detection signal A indicating the presence of a disk (see FIG. 27A or 30A). When the detection signal A becomes H level, the control unit 24 determines that a disk has been inserted (YE in step S10 of FIG. 25).
S), the drive unit 12 is controlled to rotate the loading motor 11 forward at a constant speed, and the slot-in type loading mechanism unit 10 is driven to be loaded (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 (FIG. 27 (2) or FIG. 30).
See (2). At this time, the CD2 or the single CD3 is chucked by a chucking mechanism (not shown) interlocked with the slot-in type loading mechanism 10).
Thereafter, in conjunction with the loading operation of the slot-in type loading mechanism unit 10, the contact of the loading completion detection unit 16 is closed, and an H level detection signal B indicating the completion of loading of the disk is output.

When the detection signal B becomes 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 causes the slot-in type loading mechanism to stop. The loading drive to the unit 10 is stopped, and the loading operation of the slot-in type loading mechanism unit 10 is stopped (step S13). At this time, 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
It is stored as ZE 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 manner, 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 H-level detection signal C 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 3
b, the signal recording surface area 3b comes directly above the second disk ejection detection unit 20, and the light emitted from the light emitting element 18 is not received by the light receiving element 19, Is output, the light emitted from the light emitting element 21 is received by the light receiving element 22, and the light receiving element 22 outputs the H level detection signal D (see FIG. 30 (2)).

Thereafter, when the PLAY key is depressed on the operation unit 23, the control unit 24 rotates the turntable 5 by a spindle motor, and the optical pickup 7, a head amplifier (not shown), and the reproduction system of the signal processing unit reproduce the CD2.
Alternatively, the single CD3 is reproduced from the beginning, and the reproduction is completed until the end of the CD2 or the single CD3, or
The reproduction is stopped where the key is pressed (step S15).
To S19).

While the reproduction of the disc is stopped, the user loads the CD 2 or the single CD 3 on the turntable 5.
When the user wants to take out, the user presses the eject key of the operation unit 23 to perform an eject operation. Then, the control part 2
In step S4, YES is determined in step S20, and the process 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 driving unit 12 is controlled to
1 is rotated 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 unit 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.

After step S30, the control unit 24 determines and stores the SIZE stored when the disc is loaded.
If the data is 12 cm, the first disk ejection detection unit 1
Wait until the detection signal C of No. 7 becomes L level indicating that the disc has reached the ejection position (steps S31 and S32),
When C becomes L level, it is determined that the ejection of 12 cm of CD2 is completed (see FIG. 28A), and after waiting for 130 ms to elapse, the driving unit 12 is controlled to stop the loading motor 11, and the slot-in is performed. Stop the unloading drive for the type loading mechanism unit 10,
The unloading operation of the slot-in type loading mechanism 10 is stopped (Steps S34 and S35). Thus, the ejection of the CD2 of 12 cm is completed, and almost the CD2 is ejected.
The half of 2 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 become H level.

On the other hand, if the SIZE data determined and stored when the disc is loaded is 8 cm, the second
It waits until the detection signal D of the disc ejection detection unit 20 becomes L level indicating that the disc has reached the ejection position (steps S31 and S33).
cm CD3 has been ejected (see FIG. 31).
(Refer to (1)), and after waiting for a further 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the unloading operation of the slot-in type loading mechanism unit 10 is stopped (steps S34 and S3).
5). 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.

After the ejection of the CD2 or the single CD3 is completed, the control unit 24 sets 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 L. Checking whether the level has reached the level, the first disk ejection detection unit 17 or the second
It is repeatedly checked whether the detection signal C or D from the disc ejection detection unit 20 has risen from the L level to the H level (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 comes over the unit 17 or the second disk ejection detection unit 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, and
Then, the loading operation is performed in the same manner as described above.

[0018]

As shown by reference numeral 30 in FIG. 33A, signals are recorded only in the same range as a single CD3 of 8 cm in a CD.
There is a non-standard size called 12 cm cool CD same as normal CD2. This cool CD30
However, a center hole 30a is provided at the center to be detachably fitted to the projection 6 of the turntable 5. And the central hole 30
a outside the transparent area 30c up to a radius of 20 mm, and outside the transparent area 30c up to a radius of 38 mm the signal recording area 30.
b, and the entire area outside the signal recording surface area 30b is a transparent area 30d.

When the cool CD 30 is inserted into the slot-in type CD player, the signal recording surface area 30
When the signal b reaches the H level when the signal b reaches the disc detecting section 13 (see (1) in FIG. 34), the loading operation is performed under the control of the control section 24 in substantially the same manner as for a normal CD 2 of 12 cm. 34 (2), the disc is in the loaded state as shown in FIG. 34 (2). In the discrimination of the size at the time of completion of the loading of the disc, the light emitted from the light emitting element 14 is not reflected since the transparent area 30d is on the disc detecting section 13. Since the light does not enter the light receiving element 15, the SIZE data becomes 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 state is as shown in FIG.

[0020] However, in the cool CD, FIG.
As shown by reference numeral 31 in (2), a center hole 31a is formed at the center to be detachably fitted to the projection 6 of the turntable 5, and a transparent area 31c outside the center hole 31a and having a radius of up to 20 mm is transparent. The signal recording surface area 31b extends up to a radius of 38 mm outside the area 31c, and the transparent area 31d covers the entire area outside the signal recording area 31b. Further, the label 32 extends over the transparent areas 31c and 31d on the upper surface side.
Some are marked with.

Since the label 32 acts as a reflecting 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 disk detecting section 13 and the detection signal is detected. A is H
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, FIG.
When the disc is loaded as shown in (2), in the discrimination of the size upon completion of the loading of the disc, since the label 32 is on the disc detecting unit 13, the light emitted from the light emitting element 14 is reflected and the light receiving element 15 is received. SIZE
The data is 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 becomes L level as in the case of the 12 cm CD2. Will be. For example, the state of the cool CD 31 at the time of the eject operation is as shown in FIG.
If not, after the unloading operation starts,
Since the unloading operation is immediately stopped, the inconvenience that the cool CD 31 remains in the set and cannot be removed (FIG. 37).
(See (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 ejected even if the optical disc is out of specification.

[0022]

According to a first aspect of the present invention, there is provided a slot-in type optical disk reproducing apparatus, comprising: a slot for inserting and removing an optical disk; a rotating unit for rotating an optical disk to read a recording signal; Slot-in type loading unit that performs a loading operation to move and load an optical disk from a rotating unit to a rotating unit and an unloading operation to move and eject an optical disk from a rotating unit to a slot unit, and the direction of the slot unit when viewed from the center of the rotating unit A first detecting unit including a pair of light emitting / receiving elements provided at a predetermined distance apart from each other, and detecting that the optical disc has been loaded into the rotating unit by the loading operation of the slot-in type loading unit. The optical disc is ejected to a predetermined position by the unloading operation of the second detection unit and the slot-in type loading unit. A third detecting unit for detecting that the optical disk has reached the position, and controlling the slot-in type loading unit to start a loading operation when an optical disk is inserted from the slot unit in a state where the optical disk is not loaded. The loading operation is stopped when it is detected that the optical disc has been loaded into the rotating part, and when the eject operation is performed by the eject operation part while the optical disc is loaded, the slot-in type loading part is controlled to perform the unloading operation. And a loading control section for stopping the unloading operation when the third detection section detects that the optical disk has come to the ejection position. During the unloading operation, the center hole of the optical disk is moved to the first detection section. Loading control in a slot-in type optical disc reproducing apparatus which passes through the optical axis of the light emitting element When an eject operation is performed by an eject operation unit in an optical disk loaded state, the slot-in type loading unit is controlled to start an unloading operation, and then a change from the optical disk detection state to the non-detection state is performed by the first detection unit. After the third
The unloading operation is stopped when the detection unit detects that the optical disk has reached the ejection position,
It is characterized by. According to the slot-in type optical disc reproducing apparatus of the present invention, when an 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 portion 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. Thus, 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 because of the non-standard, the center hole in the center of the optical disc and the center hole of the central hole are Unloading operation 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 the point where it is detected that the optical disk has come again, it is possible to secure an appropriate discharge amount from the slot portion to the outside, 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 unit starts an unloading operation, and then starts the first loading operation.
After a change from the optical disk detection state to a non-detection state that continues for a predetermined period of time or more occurs in the detection unit, the unloading operation is stopped when the third detection unit detects that the optical disk has come to the ejection position. It is characterized by the following. 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 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 part by the forced ejection 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 disk reproducing apparatus, comprising: a slot section for inserting and removing optical disks of a plurality of sizes; a rotating section for rotating the optical disk to read a recording signal; A slot-in type loading section that performs a loading operation for moving and loading an optical disk and an unloading operation for moving and ejecting an optical disk 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 unit including a pair of light emitting / receiving elements provided at a predetermined position, and 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. , 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 section with no optical disc loaded. When the loading operation is started by controlling the loading unit, the loading operation is stopped at the point where the optical disc is 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 unit for causing the center hole of the optical disc to detect the first hole during the unloading operation. In the slot-in type optical disk reproducing apparatus which passes through the optical axis of the light-emitting element, the loading control section controls the slot-in type loading section to perform unloading when the eject operation section performs an eject operation while the optical disk is loaded. The operation is started, and thereafter, after a change from the optical disc detection state to the non-detection state occurs in the first detection section, the disc is moved to the ejection position by the ejection detection section corresponding to the disc size detected by the size detection section. Is detected, the unloading operation is stopped. According to the slot-in type optical disk reproducing apparatus of the third aspect, when an eject operation is performed by the eject operation unit in the loaded state of the optical disk, the slot-in type loading unit is controlled to start the unloading operation, and the optical disk at the center of the optical disk is started. When the optically transparent portion comes to the first detection portion and the first detection portion changes from the optical disc detection state to the non-detection state, the optical disc is moved to the ejection position by the ejection detection portion corresponding to the disc size. When the arrival is detected, the unloading operation is stopped. As a result, if the optical disk conforms to the standard, the unloading operation is stopped when the optical disk finally reaches the predetermined discharge position according to the size, so that an appropriate amount of discharge 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 due to non-standard output immediately detected that it was at the ejection position by mistake, 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,
After that, the unloading operation is stopped at the position where the optical disk is detected again at the discharge position by the discharge detection unit according to the disk size, so that the minimum required discharge amount from the slot to the outside can be secured. Thus, it is possible to prevent the user from being unable to take out. 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 an unloading operation, and thereafter, the first detection section continues from 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 come to 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 optical disc of a non-standard 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 part by the forced ejection operation after the start of the unloading operation. And a more appropriate discharge amount from the slot portion to the outside can be secured. In the invention described in claim 5, claim 3 is provided.
In the slot-in type optical disc reproducing apparatus described in 4, the size of the optical disc is two types, a large size and a small size, and the first detecting unit is provided with a radius of the large size optical disc as viewed from the center of the rotating part and a size of the small size optical disc. Since it is arranged at a distance between the radii and the size detection unit also serves as the first detection unit, the configuration is simplified.

[0023]

Next, one 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 denotes a control unit of a microcomputer configuration that controls the entire control of the player, and a normal C of 12 cm in diameter with no disc loaded.
D (see reference numeral 2 in FIG. 24), a single CD having a diameter of 8 cm
3. When a variety of CDs such as a cool CD 31 (or a reference numeral 31 in FIG. 33) such as a cool CD 31 (or a reference numeral 31 in FIG. 33) are inserted from the slot 4, the signal recording surface area is 12 cm in diameter but the slot is a loading mechanism. The controller controls the slot-in type loading unit including the loading motor 11 and the driving unit 12 to perform a loading operation and load the turntable 5. 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 unit 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 disc is loaded, the control section 24A controls the optical pickup 7, a head amplifier and a signal processing section (not shown) while rotating the turntable 5 by the spindle motor, and reproduces the disc. Is performed.

The control unit 24A controls the slot-in type loading unit in accordance with the eject operation to start the unloading drive, and then starts the disc detection unit 13
After passing through the signal recording surface area of the disk (see 2b in FIG. 24, 3b or 31b in FIG. 1, or 30b in FIG. 33), the optical signal is applied to the central optically transparent portion. Waiting for a change from the state (A is at the H level) to the disk non-detection state (A is at the L level), and then the first disk ejection detection unit 17 and the second disk ejection detection unit 20 When it is detected that the disk has reached the ejection position on the side corresponding to the disk size determined at the time of loading the disk, the unloading operation is stopped. As a result, non-standard cool C
D, etc., immediately after the unloading operation starts,
Even if the disc ejection detection unit 17 or the second disc ejection detection unit 20 outputs a detection signal indicating that the disc ejection detection unit has erroneously arrived at the ejection position, the optical disc including the center hole in the center of the disc and the transparent area around the center hole is not affected. Unloading operation is forcibly ejected without stopping the unloading operation until a transparent portion comes to the disk detecting section 13. Then, the optical disk is detected by the first disk discharging detecting section 17 or the second disk discharging detecting section 20. Since the unloading operation is stopped at the position where the ejection position is newly detected, the minimum necessary ejection amount from the slot portion to the outside can be secured, and it is possible to prevent the user from being unable to remove the disc. . The other components in FIG. 1 are configured exactly the same as in FIG.

FIGS. 2 and 3 are flowcharts showing the control processing of the control unit 24A. FIGS. 4 to 16 are explanatory diagrams of the unloading operation. Referring to these drawings, the loading in the slot-in type CD player will be described. /
The unloading 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.

(1) In the case of a cool CD 30 having no light reflecting portion other than the signal recording surface area A user inserts the cool CD 30 shown in FIG. 33 (1) from the slot section 4, and the signal recording surface area 30b detects a disc. When light emitted from the light emitting element 14 coming on the unit 13 is received by the light receiving element 15, the light receiving element 15 outputs an H level detection signal A indicating the presence of a disk (FIG. 34).
(See (1)). The control unit 24A detects that the detection signal A is H
When the level is reached, it is determined that a disk has been inserted (YES in step S40 in FIG. 2), the drive unit 12 is controlled to rotate the loading motor 11 forward at a constant speed, and the loading drive to the slot-in type loading mechanism 10 is performed. Then, the loading operation of the slot-in type 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).
The cool CD 30 is chucked by a chucking mechanism (not shown) interlocked with the slot-in type loading mechanism 10). Thereafter, in conjunction with the loading operation of the slot-in type loading mechanism unit 10, the contact of the loading completion detection unit 16 is closed, and an H level detection signal B indicating the completion of loading of the disk is output.

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 causes the slot-in type loading mechanism to stop. The loading drive to the unit 10 is stopped, and the loading operation of the slot-in type loading mechanism unit 10 is stopped (step S43). At this time, 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 S4).
4). Here, the transparent area 3 is located above the disc detection unit 13.
Since it is 0d, the light emitted from the light emitting element 14 does not enter the light receiving element 15 and 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, 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. Received,
An H level detection signal D is output from the light receiving element 22 (see FIG. 34 (2)).

Thereafter, when the PLAY key is depressed on the operation unit 23, the control unit 24A rotates the turntable 5 at a constant linear speed by the spindle motor, and the optical pickup 7, a head amplifier (not shown), and a reproduction system of a signal processing unit. The cool CD 30 is reproduced from the beginning, and the reproduction is stopped until the reproduction is completed or the STOP key is pressed (steps S45 to S49).

When the user stops playback, the turntable 5
When the user wants to take out the cool CD 30 which has been loaded, 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 of FIG. In addition,
When the eject operation is performed during the disc reproduction, the reproduction is stopped and the process proceeds to the flow of FIG. 3 (steps S51 and S51).
52). In the flow of FIG. 3, the control unit 24A first controls the driving unit 12 to reverse the loading motor 11 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). First, the chucking by the chucking mechanism is released in conjunction with the unloading operation of the slot-in type loading mechanism 10. Subsequently, the cool CD 30 is lifted by the unloading operation of the slot-in type loading mechanism unit 10, 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). Signal B is L
Fall to the level). Next, the cool CD 30 moves straight in the direction of the slot section 4.

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. The process proceeds and waits for A to change from H level to L level.
When the cool CD 30 is in the loaded state 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, 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 so that the detection signal A becomes Since the level becomes the H level indicating 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 further proceeds, 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 emitting element 14 enters the transparent area 30c.
Is no longer received by the light receiving element 15,
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).

Since the SIZE data determined and stored when the disc is loaded is 8 cm, the detection signal D of the second disc ejection detection unit 20 for the small size indicates an 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 a further 130 ms, the drive unit 1
2, the loading motor 11 is stopped, and the unloading drive for 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 cool CD 30 is discharged from the slot portion 4 to the outside, and 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 disk ejection detection unit 20, and the second disk ejection detection unit 20 is erroneously set to H even if vibration occurs. The level can not be output. When the unloading operation stops, the detection signal A goes high because the signal recording surface area 30b comes above the disc detection unit 13.

When the cool CD 30 from which the ejection has been completed is taken out, the disc detecting section 13 outputs an L level detection signal indicating that there is no disc, so that the control section 24A determines YES in step S68 and proceeds to step S40 in FIG.
Return to Cool CD30 once ejected by the user
In order to listen again, the cool CD 30 is pushed into the slot portion 4 and the detection signal D changes from L to H level when the signal recording surface area 30b comes over the second disc ejection detection section 20 (FIG. 6). reference). Then, the control part 2
4A 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.

(2) When a normal 8 cm single CD is inserted The cool CD 30 is taken out and replaced with the 8 cm single CD shown in FIG.
When the single CD 3 is inserted from the slot section 4,
When the signal recording surface area 3b comes on the disk detection unit 13 and the H-level detection signal A is input in the same manner as in (1) (see (1) in FIG. 30), the loading drive is started and the loading is started. The loading drive is stopped when the detection signal B at the H level is output from the completion detection unit 16 (steps S40 to S43 in FIG. 2; see FIG. 30 (2)). And
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 S).
44). 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, and the signal processing unit. Then, the reproduction is stopped when the reproduction is completed to the end or when the STOP key is pressed (steps S45 to S49).

When the user stops playback, the turntable 5
When the user wants to take out the cool CD 30 which has been loaded, 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 of FIG. In addition,
When the eject operation is performed during the disc reproduction, the reproduction is stopped and the process proceeds to the flow of FIG. 3 (steps S51 and S51).
52). In the flow of FIG. 3, the control unit 24A first controls the driving unit 12 to reverse the loading motor 11 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, the disk detection unit 13
It is checked whether or not the detection signal A from the H level is at the H level (step S61). In the case of a single CD3, as shown in FIG. 30 (2), when the disc is loaded, the disc detection unit 13 moves outside the signal recording surface area 3b. Because it is NO, H
Wait for the 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 step S62 is performed.
Go to (see 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 enters the transparent area 3 c and the detection signal A becomes non-disk. It becomes L level which is the detection state. Then, the control unit 24A determines YES in step S62 (see FIG. 7 (2)).

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 detector 20 for the small size indicates the 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. 8A), and after waiting a further 130 ms, the drive unit 1
2, the loading motor 11 is stopped, and the unloading drive for 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 section 4 to the outside, and the user cannot take it out (see FIG. 8B).

(3) When a normal 12 cm CD is inserted A single CD3 is removed, and a 12 CD shown in FIG.
cm normal CD2 inserted from the slot 4
When the signal recording surface area 2b comes over the disc
When the level detection signal A is input, the loading drive is started (steps S40 and S41 in FIG. 2; FIG. 27).
(1)), the loading drive is stopped when the H-level detection signal B is output from the loading completion detection unit 16 (steps S42 and 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,
The determination result is stored as SIZE data (step S44). Here, the signal recording surface area 2b comes above the disk detection unit 13 and A goes to the H level.
Data = 12 cm. After this, PL is
When the AY key is pressed, the control unit 24A rotates the turntable 5 at a constant linear speed by the spindle motor, and reproduces the CD2 from the beginning by the optical pickup 7, a head amplifier (not shown), and a reproduction system of the signal processing unit, and reproduces to the end. Is ended or the reproduction is stopped where the STOP key is pressed (steps S45 to S49).

When the user stops playback, the turntable 5
When the user wants to take out the cool CD 30 which has been loaded, 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 of FIG. In addition,
When the eject operation is performed during the disc reproduction, the reproduction is stopped and the process proceeds to the flow of FIG. 3 (steps S51 and S51).
52). In the flow of FIG. 3, the control unit 24A first controls the driving unit 12 to reverse the loading motor 11 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, the disk detection unit 13
It is checked whether the detection signal A from the H level is at the H level (step S61). In the case of CD2, when the disc is loaded, as shown in FIG. 27 (2), the disc detection unit 13 is located below the signal recording surface area 2b. YES, so step S
Go to 62. As the unloading operation progresses further,
Since the optical axis of the light emitting element 14 of the disk detecting unit 13 is arranged to cross the center of the CD 2 exactly, the detection signal A is detected when the disk detecting unit 13 enters below the transparent area 2c. L level. Then, the control unit 24A determines YES in step S62 (see FIG. 9A).

Since the SIZE data determined and stored when the disc is loaded is 12 cm, the detection signal C of the large-size first disc ejection detection unit 17 indicates an L level indicating that the disc has reached the ejection position. (Steps S63 and S64). When C becomes L level, it is determined that the disk has reached the ejection position (FIG. 9 (2)).
After the waiting time of 130 ms, the driving 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 to stop the unloading operation (step S66). , S67). With this, CD
Almost half of 2 is discharged from the slot section 4 to the outside, so that the user cannot take it out (FIG. 1).
0).

(4) In the case of a cool CD having a label sticking out of 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. When the light emitted from the light emitting element 14 is received by the light receiving element 15 when the label 31b or the label 32 comes over the disk detecting section 13, the H level detection signal A indicating the presence of the disk is output from the light receiving element 15. (See FIG. 36 (1)). When the detection signal A becomes H level, the control unit 24A determines that a 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 to be loaded (step S41). By this, cool CD
31 is moved from the slot part 4 to the turntable 5,
The center hole 31a fits into the convex portion 6 to be loaded (at this time, the cool CD 31 is chucked by a chucking mechanism (not shown) interlocked with the slot-in type loading mechanism 10). Thereafter, in conjunction with the loading operation of the slot-in type loading mechanism unit 10, the contact of the loading completion detecting unit 16 closes, and H indicating that the loading of the disk is completed.
A level detection signal B is output.

When the detection signal B becomes H level, the control section 24A determines that the loading of the disk is completed (YES in step S42), controls the drive section 12 to stop the loading motor 11, and controls the slot-in type loading mechanism. The loading drive of the unit 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 label 32 has come on 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 the light receiving element 1
It is assumed that SIZE data = 12 cm since A was at the H level (see FIG. 36 (2)).
When the loading of the cool CD 31 onto the turntable 5 is completed, the signal recording surface area 31b 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 the detection signal D at the H level.

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 the control unit 24A controls the optical pickup 7, a head amplifier (not shown), and a reproduction system of a signal processing unit. The cool CD 31 is reproduced from the beginning, and the reproduction is stopped until the reproduction is completed or the STOP key is pressed (steps S45 to S49).

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 section 23 to perform an eject operation. Then, the control unit 24A determines YES in step S50, and FIG.
Proceed to flow. 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, the unloading operation of the slot-in type loading mechanism unit 10 raises the cool CD 31 and removes the center hole 31a 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 the L level). Next, the cool CD 31 moves straight in the direction of the slot portion 4.

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 (1), the disk detector 13 is outside the signal recording surface area 31b and the label 32, and waits until it becomes H level because it is NO. 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.
YES is determined in the step S61, and the process proceeds to the step S62 (see FIG. 11B). When the unloading operation further proceeds, since the optical axis of the light emitting element 14 of the disk detection unit 13 is arranged so as to cross just the center of the cool CD 31, the detection signal A is output to the disk non-detection area when it enters the transparent area 31c. It becomes L level which is the detection state. Then, the control unit 24A determines YES in step S62 (see FIG. 12A).

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 indicates an 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 becomes L from the start of the unloading operation.
Although it has fallen to the level, in this embodiment the cool CD
Since the unloading operation proceeds forcibly until the transparent area 31 c of the disc 31 comes above the disc detection unit 13, the label 32 comes on the first disc ejection detection unit 17 when the result of step S 62 is YES. And the detection signal C is at the H level. Then, the edge of the label 32 becomes the first
It is determined that the disc has come to the ejection position when C comes to the L level upon reaching the disc ejection detection unit 17 (YES in step S64, see FIG. 12 (2)), and further 130 m
After waiting for s, 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 to stop the unloading operation (step S6).
6, S67). As a result, almost half of the single CD 3 is ejected from the slot 4 to the outside, so that the user cannot be taken out (see FIG. 13).

If the size data determined when the disc is loaded is 12 cm and the cool CD 31 is in the state shown in FIG. 14A when the eject operation is performed, the label 32 is present on the disc detecting unit 13. Therefore, the detection signal A is set to the H level. For this reason, 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 determined 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)). , 1
After a waiting time of 30 ms, the drive unit 12 is controlled to stop the loading motor 11 and stop the unloading drive for the slot-in type loading mechanism unit 10 (see FIG. 15). Even in this case, cool CD
Since the unloading operation proceeds forcibly until the transparent area 31c of the disc 31 comes above the disc detection unit 13, a minimum necessary discharge amount can be secured.

When the disc size determined at the time of loading the disc is 8 cm, the process proceeds from step S63 to step S64 without proceeding to step S64, and the detection signal D of the second disc ejection detection unit 20 for small size ejects the disc. It waits for the L level indicating that it has come to the position. 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. 16 and the cool CD 31 has been ejected to the outside from the slot portion 4 by half or more. It can be taken out as it is.

According to this embodiment, when the ejecting operation is performed by the operation unit 23 with the optical disk loaded, the control unit 24A controls the slot-in type loading unit to start the unloading operation, and the optical disk at the center of the optical disk. After the transparent part (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, the first disk ejection detection unit 17 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 when the disk is loaded in the second disk discharge detection unit 20. 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.

On the other hand, since the optical disc is a nonstandard optical disc such as the cool CD 31, after the unloading operation is started, the disc is out of the standard, and the first disc ejection detecting section 17 and the second disc ejection detecting section 20 are loaded when the disc is loaded. Even if it is detected that the optical disk has immediately come to the ejection position on the side corresponding to the disk size detected by the disk detection unit 13, the optically transparent portion (including at least the center hole) at the center of the optical disk is detected by the disk detection unit. Unloading operation is forcibly ejected without stopping until the position of the disc 13 is reached. After that, of the first disc ejection detection unit 17 and the second disc ejection detection unit 20, the disc detection unit 13 detects when the disc is loaded. The unloading operation is performed when the optical disk arrives at the ejection position on the side corresponding to the detected disk size. Because There is stopped, can be secured minimum required emissions to the outside from the slot portion, it can prevent the user can no longer be extracted.

Note that 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 S7).
0), if A goes to the H level before the time is up, the process returns to step S62 (YES in step S72), and A becomes H
Only if the time has elapsed before
1), the process proceeds to step S63, and after the unloading drive is started, after the disc detection unit 13 changes from the optical disc detection state to the non-detection state that continues for T hours or more, the first disc ejection detection unit 17 The unloading drive may be stopped when the disc ejection is detected on the side of the second disc ejection detection unit 20 for the disc size detected when the disc is loaded. As shown in FIG. 18, T is a transparent area 3 on the outer peripheral side.
During the unloading operation of the cool CD 33 in which most of 3d, the signal recording surface area 33b, and the inner transparent area 33c are covered with the label 34 except for the center hole 33a,
While the center hole 33a crosses the optical axis of the light emitting element 14 of the disk detection unit 13, the time is about 20% shorter than the time T 'when the detection signal A is at the L level. For example, T '= 165 ms
, T = 135 ms.

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 shape in the outer transparent area 35d and the inner transparent area 35c. Labels 36 and 37 are affixed, and it is determined that the size is 8 cm in the discrimination when the disc is loaded.
4A starts unloading drive in step S60 of FIG. 17, and then checks whether the detection signal A from the disk detection unit 13 is at the H level (step S6).
1), in the state shown in FIG. 19A, the disk detection unit 13 is outside the signal recording surface area 35b and the label 36, and waits for the signal to go to the H level because it is NO. When the label 36 comes over 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 that YES is determined in the step S62,
Proceeding to step S70, a timer for measuring the time T is started.

Then, it is checked which of the time is up or the detection signal A becomes H level earlier (steps S71, S72). Label 36 and signal recording surface area 35b
20 is much smaller than the diameter of the center hole 35a, the signal recording surface area 35b comes over the disc detection unit 13 before the time is up, and the detection signal A becomes H level (FIG. 20).
(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 from H level to L level again. 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).

Then, it is checked whether the time is up or 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.
Comes, and the detection signal A becomes H level again (FIG. 21 (2)).
reference). Then, the control unit 24A proceeds to step S7.
It is determined YES at 2 and the process returns to step S62 to wait for the detection signal A to change to the L level. Then, the label 37
Is off from above the disk detection unit 13 and the detection signal A becomes L level indicating that the disk is not detected.
Then, the control unit 24A determines in step S62 that YE
It is determined to be S (see FIG. 22A).

Here, the time is up again and the detection signal A becomes H
It is checked which is earlier than the level (steps S71, S72). Transparent area 35 inside label 37
c and the central hole 35a are optically transparent, and the L level of the detection signal A continues for a period of time T or more. Therefore, the timer times out 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 S6)
5). 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 (FIG. 22 (2)).
After the waiting time of 130 ms, the driving 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 to stop the unloading operation (step S66). , S67, see FIG. Even when a picture is drawn at the position where the labels 36 and 37 of the cool CD 35 are affixed, the same unloading operation as that of the cool CD 35 is performed.

If the CD 2 is inserted instead of the cool CD 35, the signal recording surface area 2b is located above the disc detecting section 13 at the start of the unloading drive. When the transparent area 2c is applied to the timer, a timer is started. Since the diameter of the transparent region 2c is much larger than that of the center hole 2a, the time is up before A becomes H, and step S63 is performed.
Proceed to. The rest is exactly the same as the flow of FIG. 3, so that the operation is stopped in a state where almost half of the CD2 is finally discharged (see FIG. 10).

Instead of the cool CD35, a single CD
3 or the cool CD 30 is inserted, the signal recording surface area 3b or 30
In the case where “b” has arrived on the disk detection unit 13, step S 6
If 1 is YES, and the transparent area 3c or 30c hangs on the disk 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. The rest is exactly the same as the flow in FIG. 3, so that finally a single CD3 or a cool CD30
Is stopped in a state where almost half of is discharged (see FIG. 8 (2) or FIG. 5 (2)).

According to the modification shown in FIG. 17, the control section 24A starts the unloading operation, and thereafter, the disc detecting section 13 changes from the optical disc detecting state to the non-detecting state which continues for a predetermined time T or more. After
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 unit 13 when the disc is loaded, the unloading operation is performed among the first disc ejection detection unit 17 and the second disc ejection detection unit 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.

On the other hand, as in the case of the cool CD 35, the disk is detected immediately after the unloading operation is started because an annular label 36 is affixed to a transparent area on the outer peripheral side of the non-standard optical disk or a picture is drawn. Even if a change from the optical disk detection state to the non-detection state occurs in the unit 13, if the non-detection state ends within a predetermined period of time T, it is ignored, and the unloading operation stops with the optical disk insufficiently discharged. Can be avoided. 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.

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 disc size is determined in step 60 of FIG. 3 or FIG. The determination may be made before the loading drive is started (while the disc is being loaded on the turntable 5).

[0059]

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, it is impossible to take out the optical disk by securing the required minimum amount of ejection. Can be avoided.

[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 modified example 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.

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. 24.

FIG. 35 is an explanatory diagram of the loading / unloading operation in FIG. 24.

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 Center hole 2b, 3b, 30b, 31b, 35b Signal recording surface area 2c, 2d, 3c, 3d, 30c, 30d, 31c, 3
1d, 35c, 35d Transparent area 3 Single CD 4 Slot 5 Turntable 6 Convex 10 Slot-in type loading mechanism 11 Loading motor 12 Drive 13 Disc detector 14, 18, 2
DESCRIPTION OF SYMBOLS 1 Light emitting element 15, 19, 22 Light receiving element 16 Loading completion detection part 17 1st disk discharge detection part 20 2nd disk discharge detection part 23 Operation part 24A Control part 30, 31, 35 Cool CD 32, 36, 3
7 Label

Claims (5)

[Claims] 1. A slot for loading and unloading an optical disc, a rotating section for rotating the optical disc to read a recording signal, a loading operation for moving and loading the optical disc from the slot to the rotating section, and a slot for the rotating section. A slot-in type loading section for performing an unloading operation for moving and ejecting the optical disc to the optical disc, and a pair of light emitting / receiving elements provided at a position separated by a predetermined distance in the direction of the slot section when viewed from the center of the rotating section. 1 detecting section, 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, and the optical disc having a predetermined state by the unloading operation of the slot-in type loading section. A third detection unit for detecting that the optical disc has reached the ejection position, and a slot when no optical disc is loaded. When the optical disc is inserted from the section, the slot-in type loading section is controlled to start the loading operation, and the loading operation is stopped when the second detecting section detects that the optical disc has been loaded into the rotating section. When an 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.
A loading control unit for stopping the unloading operation when the detection unit detects that the optical disk has reached the discharge position, and during the unloading operation, the center hole of the optical disk is moved to the optical axis of the light emitting element of the first detection unit. In the slot-in type optical disc reproducing device, the loading control unit controls the slot-in type loading unit to start the unloading operation when the eject operation unit performs the eject operation in the loaded state of the optical disc. After a change from the optical disc detection state to the non-detection state occurs in the first detection section, the unloading operation is stopped when the third detection section detects that the optical disc has reached the ejection position. A slot-in type optical disc reproducing apparatus characterized by the following. 2. The loading control section starts an unloading operation. After the first detection section changes from an optical disc detection state to a non-detection state which continues for a predetermined time or more, the loading control section starts the unloading operation. 2. The slot-in type optical disc reproducing apparatus according to claim 1, wherein the unloading operation is stopped when it is detected that the optical disc has reached the ejection position. 3. A slot for loading and unloading optical disks of a plurality of sizes, a rotating unit for rotating the optical disk to read a recording signal, and a loading operation and rotation for moving and loading the optical disk from the slot to the rotating unit. Slot-in type loading section that performs an unloading operation to move and eject the optical disk from the section to the slot section, and a pair of light emitting and receiving sections provided at a predetermined distance in the direction of the slot section when viewed from the center of the rotating section A first detection unit including an element, 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 a size detection unit for detecting the size of the disk. The size of the optical disk is set by the unloading operation of the slot-in type loading unit. A plurality of ejection detection units for detecting that a predetermined ejection position has been reached in accordance with the condition, and a loading operation is started by controlling the slot-in type loading unit when an optical disc is inserted from the slot while the optical disc is not loaded. The loading operation is stopped when the optical disc is loaded in the rotating unit by the second detecting unit, and when the ejecting operation is performed by the ejecting operation unit, the slot-in type loading unit is controlled to unload. A loading control unit that starts the loading 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. During operation, a slot-in type in which the center hole of the optical disk passes through the optical axis of the light emitting element of the first detector In the disc reproducing apparatus, when the eject operation is performed by the eject operation unit in the loaded state of the optical disc, the loading control unit controls the slot-in type loading unit to start the unloading operation, and then the first detection unit detects the optical disc in the detected state. Unloading operation is stopped when the ejection detection unit detects that the disc has come to the ejection position according to the disc size detected by the size detection unit after the change from to the non-detection state occurs. A slot-in type optical disc reproducing apparatus characterized by the above-mentioned. 4. A loading control unit starts an unloading operation, and after the first detection unit changes from an optical disk detection state to a non-detection state that continues for a predetermined period of time or more, the size detection unit detects the change. 4. The slot-in type optical disc reproducing apparatus according to claim 3, wherein the unloading operation is stopped when the ejection detection unit corresponding to the disc size detected detects that the disc has reached the ejection position. . 5. An optical disk having two sizes, a large size and a small size, and wherein the first detection unit is located 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. 5. The slot-in type optical disc reproducing apparatus according to claim 3, wherein the size detecting section is also used as the first detecting section. 6.