JP2000315347A - 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 1st and a 2nd disk ejection detecting parts 17, 20 for detecting that each of 12 cm and 8 cm CDs comes to a specified ejecting position, are provided at the side of a slot part 4 looking from the center of a table 5. When an eject key is pressed in the loading state of the optical disk, a control part 24A makes a slot-in type loading part to start the unloading operation, and when the size of the disk is being discriminated as 12 (8) cm at the time of loading, the unloading operation is stopped at the time point when the state of the disk attained to the ejecting position is detected by the 1st disk ejection detecting part 17 for 12 cm disk (2nd disk ejection detecting part 20 for 8 cm disk). In the case a sufficient ejecting amount is not effected due to the off- specification optical disk, by pressing again the eject key, the slot-in type loading part is controlled by the control part 24A to continue the unloading operation during only the time the pressing of the eject key is continued.

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. 9 shows a configuration around a slot-in type loading section of a conventional slot-in type CD player.
1 is a front panel, which is a normal CD 2 or 8 of 12 cm.
A single CD 3 cm in and out is provided with a slot portion 4. 2a out of CD2 or single CD3
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. 2
c 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). 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 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.

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. 10 and 11 are flowcharts showing the control processing of the control unit 24, and FIGS. 12 to 17 are explanatory diagrams of loading / unloading operations.
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.
Reference numeral 3 denotes a state in which the turntable 5 is not loaded, and A to D are all at L level.

The user inserts a CD 2 or a single CD 3 from the slot section 4 and the signal recording surface area 2 b or 3 b
Comes on the disk detection unit 13 and the light emitted from the light emitting element 14 is received by the light receiving element 15.
5 outputs an H-level detection signal A indicating the presence of the disk (see FIG. 12A or FIG. 15A). When the detection signal A becomes H level, the control unit 24 determines that a disk has been inserted (Y in step S10 of FIG. 10).
ES), controlling the driving unit 12 to control the loading motor 11
Is rotated forward at a constant speed, and the slot-in type loading mechanism 10 is driven to be loaded (step S1).
1). Thereby, the CD 2 or the single CD 3 is moved from the slot portion 4 to the turntable 5, and the center hole 2a
Alternatively, 3a is fitted into the protrusion 6 (see FIG. 12 (2) or FIG. 15 (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. King). Thereafter, the slot-in type loading mechanism 10
In response to the loading operation, the contact of the loading completion detecting section 16 is closed, and an H-level detection signal B indicating the loading of the disc 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. 12 (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 H level detection signal D is output from the light receiving element 22 (see FIG. 15 (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. If an eject operation is performed during the reproduction of the disc, the reproduction is stopped, and the process proceeds to the flow of FIG. 11 (YES in step S21, S22). In the flow of FIG. 11, 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 the L level, it is determined that the ejection of the 12 cm CD2 is completed (see FIG. 13A), and after waiting for 130 ms to elapse, the driving unit 12 is controlled to stop the loading motor 11, and the slot is stopped. The unloading drive for the in-type loading mechanism 10 is stopped, and 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 discharged.
Half comes out of the slot portion 4 to the outside (see FIG. 1).
3 (2)). At this time, the disc detection unit 13 and the second
The signal recording surface area 2b is located above the disc ejection detection unit 20, and the detection signals A and D are set to 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 single CD3 has been ejected (FIG. 16
(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. 16 (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. 10 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 portion 17 or the second disk ejection detection portion 20, one of the detection signals C and D rises from the L level to the H level (see FIG. 14 or FIG. 17). Then, the control unit 24 determines YES in step S37 and returns to FIG.
Then, the loading operation is performed in the same manner as described above.

[0018]

As shown by reference numeral 30 in FIG. 18A, 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
The transparent area 30c extends up to a radius of 20 mm outside the area a, and the signal recording area 3 extends up to a radius of 38 mm outside the transparent area 30c.
0b, 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 comes over the disk detection unit 13 (see FIG. 19A), the loading operation is performed under the control of the control unit 24 in substantially the same manner as the normal CD2 of 12 cm. 19 (2), the disc is loaded, but in the discrimination of the size when the disc is completely loaded, the light emitted from the light emitting element 14 is not reflected because the transparent area 30d is located above the disc detection unit 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. 21A), 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 goes to the L level, as in the case of the 12 cm CD2. Will be done. For example, if the state of the cool CD 31 at the time of the eject operation is as shown in FIG. 22A and the label 32 has not come on the disk detecting unit 13, the unloading operation immediately starts after the unloading operation starts. Since the cool CD 31 is stopped, the cool CD 31 remains in the set and cannot be removed (FIG. 22).
(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; A slot-in type loading unit for performing a loading operation of moving and loading an optical disk from a rotary unit to a rotating unit and an unloading operation of moving and discharging an optical disk from a rotary unit to a slot unit, and an optical disk by a loading operation of the slot-in type loading unit A loading detecting unit for detecting that the rotating unit has been loaded, and a discharging detecting unit for detecting that the optical disc has come to a predetermined discharging position by the unloading operation of the slot-in type loading unit, When an optical disk is inserted from the slot while no optical disk is loaded, the slot The loading operation is started by controlling the loading type loading unit, and the loading operation is stopped when the loading detection unit detects that the optical disk is loaded. Conversely, the loading operation is performed by the ejection operation unit while the optical disk is loaded. A loading control unit that controls the slot-in type loading unit to start an unloading operation when the operation is performed, and stops the unloading operation when the ejection detection unit detects that the optical disc has reached the ejection position; In the slot-in type optical disc reproducing apparatus including the above, the loading control unit controls the slot-in type loading unit while the ejection operation is performed by the ejection operation unit after the ejection of the optical disc is completed. Unloading operation is continued. It is. 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 ejection detection section performs the operation. When it is detected that the optical disk has reached the ejection completion position, the unloading operation is stopped. Thus, the optical disk conforming to the standard can be reliably ejected from the slot to the outside. If the ejected amount of the optical disc is not enough due to non-standard, etc., if the eject operation is further performed, the unloading operation will be continued while the eject operation is being performed. Thus, the optical disk can be reliably taken out. In the slot-in type optical disc reproducing apparatus according to the second aspect, in the apparatus according to the first aspect, after the ejection of the optical disc is completed, if the ejecting operation section further performs an ejecting operation, the loading control section within a predetermined time period. It is characterized in that the slot-in type loading unit is controlled to continue the unloading operation while the eject operation is being performed. As a result, after the ejection of the optical disc is completed, the continuation time of the unloading operation performed when the eject operation section is further operated by the eject operation section is limited within a predetermined fixed time. It does not completely come out of the slot. 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 unit for performing a loading operation for moving and loading an optical disk and an unloading operation for moving and discharging an optical disk from a rotating unit to a slot unit, a size detection unit for detecting the size of the optical disk, and a slot-in type loading A loading detection unit for detecting that the optical disk has been loaded into the rotating unit by the loading operation of the unit; Multiple discharge detections to detect when the discharge position has been reached 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 loading detection section detects that the optical disc has been loaded into the rotating section. When 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 loading operation is performed according to the size detected by the size detection unit. A loading control unit that stops the unloading operation when the optical disc comes to the ejection position by the ejection detection unit, the loading control unit comprising: When the eject operation is further performed in the eject operation section, the eject operation is performed. While is, it has to be continued the unloading operation by controlling the slot-in type loading unit is characterized. According to the third aspect of the present invention, when an eject operation is performed by the eject operation unit while the optical disk is loaded, the slot-in type loading unit is controlled to start the unloading operation, and the size detection unit performs the operation. When the ejection detection unit corresponding to the detected size detects that the optical disk has reached the ejection position, the unloading operation is stopped. Thus, optical disks of various sizes conforming to the standard can be reliably ejected from the slot to the outside. If the ejection amount of the optical disk is not enough due to non-standard, if the eject operation is further performed, the unloading operation is continued while the eject operation is being performed.
By ejecting a desired amount, the optical disk can be reliably taken out. According to a fourth aspect of the present invention, in the apparatus according to the third aspect, the loading control section is configured to perform an ejection operation by an ejection operation section after completion of ejection of the optical disc within a predetermined time. It is characterized in that the slot-in type loading unit is controlled to continue the unloading operation while the eject operation is being performed.
Accordingly, after the ejection of the optical disc is completed, the continuation time of the unloading operation performed when the eject operation unit is further operated by the eject operation unit is limited within a predetermined fixed time. It does not completely come out of the slot.

[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. 9 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 CD having a diameter of 12 cm with no disc loaded.
(See reference numeral 2 in FIG. 9), a single CD3 having a diameter of 8 cm,
The diameter is 12cm but the signal recording area is single CD
Cool CD 31 in the same range as (or reference numeral 30 in FIG. 18)
When a variety of CDs are inserted from the slot section 4, the slot-in type loading mechanism section 10, the loading motor 11, and the drive section 12 are controlled to perform a loading operation. 5 is charged. 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 to perform an unloading operation once according to the ejecting operation and perform the ejecting operation again after the ejection is completed, while the ejecting operation is being performed. The unloading operation is continued, and when the eject operation ends, the unloading operation is stopped. As a result, even if the disc is not ejected to the correct position due to a non-standard cool CD or the like, the disc can be ejected in a desired amount, so that it is not impossible 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 7 are explanatory diagrams of the unloading operation. Referring to these drawings, the loading in the slot-in type CD player will be described. / 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 area, the user inserts the cool CD 30 shown in FIG. When light emitted from the light emitting element 14 coming on the unit 13 is received by the light receiving element 15, an H level detection signal A indicating the presence of a disk is output from the light receiving element 15 (FIG. 19).
(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 slot-in type loading mechanism 10 starts the loading operation (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. 19 (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 currently loaded disk, and the determination result is
It is stored as ISE data (step S44).
In this case, the light emitted from the light emitting element 14 does not enter the light receiving element 15 because A is at the L level because the transparent area 30d is above the disk detection unit 13, so that 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 emitting element 2
1 is received by the light receiving element 22, and the light receiving element 22 outputs an H level detection signal D (FIG. 1).
9 (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 wants to take out the cool CD 30 loaded on the turntable 5, the operation unit 2
Press the eject key of No. 3 to perform an eject operation. Then, control unit 24A determines YES in step S50.
It proceeds to the flow of 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 (YES in step S51, S
52). In the flow of FIG. 3, first, the drive unit 12 is controlled to start the reverse rotation drive of the loading motor 11, and the unloading drive to the slot-in type loading mechanism unit 10 is started, and the unloading operation of the slot-in type loading mechanism unit 10 is started. (Step S
60). First, the slot-in type loading mechanism 10
The chucking by the chucking mechanism is released in conjunction with the unloading operation of. 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). The signal B falls to the L level). Next, the cool CD 30 moves straight in the direction of the slot section 4.

After step S60, the control unit 24A discriminates and stores the SIZ stored when the disc is loaded.
Since the E data is 8 cm, it waits until the detection signal D of the second disk ejection detection unit 20 for the small size becomes L level indicating that the disk has reached the ejection position (step S61).
S63). When D becomes the L level, it is determined that the disk has come to the ejection position. After waiting for a further 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the slot-in type loading mechanism unit 10 is controlled. The unloading operation is stopped by stopping the unloading drive (steps S64 and S65). As a result, almost half of the cool CD 30 is discharged from the slot section 4 to the outside, and the user cannot be taken out (see FIG. 4A). In step S64
By taking a waiting time of 130 ms, the signal recording surface area 30
b can be set at a position distant from the second disk ejection detection unit 20 so that the second disk ejection detection unit 20 does not erroneously output the H level even when vibration occurs. 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 ejected cool CD 30 is taken out, the disc detecting section 13 outputs an L level detection signal indicating that there is no disc, so the control section 24A determines YES in step S70, 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 disk ejection detection section 20 (FIG. 4). (See (2)). Then, the control unit 24A determines YES in step S71, 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 (see FIG. 15A), the loading drive is started and loaded. The loading drive is stopped when the completion detection unit 16 outputs the H-level detection signal B (steps S40 to S43 in FIG. 2; see FIG. 15 (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. After that, the PLAY is
When the key is pressed, the control unit 24A rotates the turntable 5 at a constant linear speed by the spindle motor,
The single CD 3 is reproduced from the head by the reproduction system of the optical pickup 7, the head amplifier (not shown), and the signal processing unit.
The reproduction is stopped when the reproduction is completed or the STOP key is pressed (steps S45 to S49).

When the user wants to remove the single CD 3 loaded on the turntable 5, the operation unit 2
Press the eject key of No. 3 to perform an eject operation. Then, control unit 24A determines YES in step S50.
It proceeds to the flow of 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 (YES in step S51, S
52). In the flow of FIG. 3, first, the control unit 24A
Starts unloading drive (step S6).
0), SIZ determined and stored when the disc was loaded
Since the E data is 8 cm, it waits until the detection signal D of the small-size second disk ejection detection unit 20 becomes L level indicating that the disk has reached the ejection position (step SS6).
1, 63). When D becomes L level, it is determined that the disk has reached the ejection position (YES in step S63; see FIG. 16A), and after waiting a further 130 ms, the drive unit 12 is controlled to control the loading motor. 11 and stop the unloading drive of the slot-in type loading mechanism 10 (steps S64 and S6).
5). As a result, a discharge amount suitable for an 8-cm single CD 3 can be secured, and almost half of the discharge can be taken out of the slot 4 (see FIG. 16 (2)).

(3) When a normal 12 cm CD is inserted: Remove the single CD3 and replace it with the 12c shown in FIG.
When the normal CD 2 of m is inserted from the slot section 4, when the signal recording surface area 2b comes over the disc detecting section 13 and the H-level detection signal A is inputted, the loading drive is started (see FIG. 2). Steps S40 and S41, FIG.
(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. 12 (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 wants to remove the CD 2 loaded on the turntable 5, 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. 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 (YES in step S51, S5
2). In the flow of FIG. 3, first, the control unit 24A starts the unloading drive, and 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 is output. Waits until the level becomes the L level indicating that the disk has reached the ejection position (steps S60 to S62). When the signal recording surface area 2b does not exist on the first disc ejection detection unit 17 and C becomes L level, it is determined that the disc has reached the ejection position (YES in step S62, FIG. 13).
(Refer to (1)), after further waiting for 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the unloading drive of the slot-in type loading mechanism unit 10 is stopped (steps S64 and S65).
FIG. 13 (2)). As a result, a discharge amount suitable for a CD 2 having a size of 12 cm can be secured outward from the slot portion 4 and the user is not prevented from taking out.

(4) In the case of a cool CD with a label sticking out of the transparent area on the outer peripheral side, the user inserts the cool CD 31 shown in FIG. 1 from the slot section 4, and the signal recording surface area 31b or the label 32 detects the disc. When light emitted from the light emitting element 14 coming on the unit 13 is received by the light receiving element 15, an H level detection signal A indicating the presence of a disk is output from the light receiving element 15 (FIG. 21 (1)). reference). 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 has been completed (YES in step S42), controls the drive section 12 to stop the loading motor 11, and causes the slot-in type loading mechanism to stop. 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
5 and A was at the H level, so that the SIZE data was 12 cm (see FIG. 21 (2)).
When the loading of the cool CD 31 onto the turntable 5 is completed as described above, the light emitted from the light emitting element 21 is received by the light receiving element 22 with the signal recording surface area 31b coming directly above the second disk ejection detecting section 20. From the light receiving element 22
A level detection signal D is output.

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 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 on the turntable 5, the operation unit 2
Press the eject key of No. 3 to perform an eject operation. Then, control unit 24A determines YES in step S50.
It proceeds to the flow of 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 (YES in step S51, S
52). In the flow of FIG. 3, first, the control unit 24A
Controls the driving unit 12 to reverse the loading motor 11 at a constant speed, and the slot-in type loading mechanism 1
0 to start unloading drive (step S6).
0). 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 rises and the center hole 31a comes off 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 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 determines and stores the SIZ
Since the E data is 12 cm, it waits until 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 (step S61,
S62). When C becomes the L level, it is determined that the disk has reached the ejection position (YES in step S62), and after waiting for a further 130 ms, the drive unit 12 is controlled to stop the loading motor 11, and the slot-in is performed. The unloading drive of the expression loading mechanism unit 10 is stopped (steps S64 and S65).

Here, when the cool CD 31 at the time of performing the eject operation is in the state shown in FIG. 5A, the label 32 as well as the signal recording surface area 31b is formed on the first disk ejection detecting section 17. Since there is no light, the light emitted from the light emitting element 18 does not enter the light receiving element 19, and the first disk ejection detection unit 17 sets the detection signal C to the L level. For this reason,
Step S immediately after starting the unloading operation
At 62, the answer is YES, and the ejection is completed while the cool CD 31 is still in the set, and cannot be taken out as it is (see the dashed-dotted line X in FIG. 5 (2); see FIG. 22 (2)). ).

In this embodiment, after the ejection of the disc is completed, when the user presses the eject key again to perform the eject operation, the control section 24A controls the drive section 12 to reverse the loading motor 11 at a constant speed, and The unloading drive to the in-type loading mechanism 10 is started, and the unloading operation of the slot-in loading mechanism 10 is restarted (steps S66 and S67). This unloading drive is continued while the eject key is kept pressed and the eject operation is continued. Cool CD3 from slot 4
When the eject key is released at the point where the ejected amount of 1 has come out to be easily taken out, and the eject operation is completed, the control unit 24
A controls the drive unit 12 to stop the loading motor 11, stop the unloading drive for the slot-in type loading mechanism 10, and stop the unloading operation of the slot-in type loading mechanism 10 (steps S68 and S69). (See the solid line Y in FIG. 5 (2)). Thus, the user can easily take out the cool CD 31.

If the cool CD 31 at the time of the eject operation is in the state shown in FIG. 6A, the label 32 is present on the first disc ejection detecting section 17, so that the first disc eject detecting section 17 Indicates that the detection signal C is at the H level. Therefore, after the unloading operation is started in step S60, the unloading operation continues for a while, and the label 3
When the edge of No. 2 has reached the first disc ejection detecting section 17, YES is determined in step S62, and the cool CD 31 is ejected more than half from the slot section 4 to the outside, and the unloading operation is stopped. (See FIG. 6 (2)).

If the disc size determined at the time of loading the disc is 8 cm, after the unloading operation is started, the detection signal D of the second disc ejection detector 20 for the small size indicates that the disc has reached the ejection position. The unloading operation is stopped after 130 ms elapses after reaching the L level shown in FIG. 3 (steps S60, S61, S6 in FIG. 3).
3, S64, S65). If the cool CD 31 when the eject operation is performed is in the state shown in FIG. 5A, then when the ejection is completed, the cool CD 31 is in the state shown in FIG. 7A, and the cool CD 31 when the eject operation is performed is shown in FIG. When the ejection is completed, the cool CD 31 is in the state shown in FIG.
In any case, the cool CD 31 is almost half discharged from the slot portion 4 to the outside, so that the cool CD 31 can be taken out as it is.

According to this embodiment, when the eject key of the operation unit 23 is pressed while the optical disk is loaded and the eject operation is performed, the control unit 24A controls the slot-in type loading unit to start the unloading operation. The discharge position of the disk is determined according to the size determined when the turntable 5 is loaded with the disk, out of the large-size disk discharge detection unit 17 and the small-size disk discharge detection unit 20. When it is detected that the camera has come to the position, the unloading operation is stopped. This allows
The CD2 or the single CD3 conforming to the standard can be reliably discharged from the slot portion 4 to the outside. If the ejection amount of the disc is not enough due to non-standards such as Cool CD 31, if the eject key is further pressed and the eject operation is performed, the control section 24 is in a slot-in type while the eject operation is being performed. Since the unloading operation is continued by controlling the loading section,
The disc can be ejected in a desired amount, and the disc can be reliably taken out.

The flow of FIG. 3 is modified as shown in FIG.
If NO in step S68, the process proceeds to step S72,
It is checked whether or not a predetermined period of time (for example, a time for moving the optical disk in the outward direction by about 3 to 5 cm) has elapsed since the ejection key was pressed. If NO, the process returns to the step S68. If YES, the process returns to the step S68. Proceeding to S69, the unloading operation may be automatically stopped. In this way, even if the user accidentally presses the eject key for a long time and continues the ejecting operation for a long time, the unloading operation is continued only for a certain period of time, so that the disk completely comes out of the slot section 4 and Can be prevented. In the above-described embodiment and the modified example, 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. The determination may be made before the operation is started (while the disk is being loaded on the turntable 5).

[0047]

According to the present invention, an optical disk conforming to the standard can be reliably ejected from the slot to the outside, and even if the amount of ejected optical disk is insufficient due to non-standard, the eject operation can be further performed. Then, by discharging the desired amount, the optical disk can be reliably taken out.

[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 a flowchart showing a modified example of FIG.

FIG. 9 is a configuration diagram of a conventional slot-in type CD player.

FIG. 10 is a flowchart illustrating a control process of a control unit in FIG. 9;

FIG. 11 is a flowchart illustrating a control process of a control unit in FIG. 9;

12 is an explanatory diagram of the loading / unloading operation of 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 an explanatory diagram of the loading / unloading operation of FIG.

FIG. 18 is an external view of a CD of a type different from the standard.

19 is an explanatory diagram of the loading / unloading operation of FIG.

20 is an explanatory diagram of the loading / unloading operation of FIG.

21 is an explanatory diagram of the loading / unloading operation of FIG.

FIG. 22 is an explanatory diagram of the loading / unloading operation of FIG.

[Explanation of symbols]

2 CDs 2a, 3a, 30
a, 31a Central holes 2b, 3b, 30b, 31b Signal recording surface areas 2c, 2d, 3c, 3d, 30c, 30d, 31c, 3
1d Transparent area 3 Single CD 4 Slot 5 Turntable 6 Convex 10 Slot-in type loading mechanism 11 Loading motor 12 Drive 13 Disk detector 14, 18, 21
Light-emitting element 15, 19, 22 Light-receiving element 16 Loading completion detecting section 17 First disc ejection detecting section 20 Second disc ejection detecting section 23 Operation section 24A Control section

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaki Yoshimura 1-14-6 Dogenzaka, Shibuya-ku, Tokyo F-term in Kenwood Corporation (reference) 5D046 AA12 CA16 CB02 CD01 EA06 FA04 FA06 FA02 GA02 GA15 HA08

Claims (4)

[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 unit that performs an unloading operation of moving and ejecting the optical disk to and a loading detection unit that detects that the optical disk has been loaded into the rotating unit by the loading operation of the slot-in type loading unit; The ejection detection unit for detecting that the optical disc has reached the predetermined ejection position by the unloading operation of the slot-in loading unit, and the slot-in loading unit when the optical disc is inserted from the slot while the optical disc is not loaded. Control to start the loading operation. The loading operation is stopped when it is detected that the disc is loaded, and conversely, when 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 perform the unloading operation. And a loading control unit that stops the unloading operation when the ejection detection unit detects that the optical disc has reached the ejection position. In the slot-in type optical disc reproducing apparatus, the loading control unit After the completion, when the eject operation is further performed by the eject operation section, the slot-in type loading section is controlled to continue the unloading operation while the eject operation is being performed, characterized by the slot-in type, Optical disc playback device. 2. When the ejecting operation is further performed by the ejecting operation unit after the ejection of the optical disk is completed, the loading control unit operates the slot-in type loading unit while the ejecting operation is performed only within a predetermined period of time. 2. The slot-in type optical disk reproducing apparatus according to claim 1, wherein the unloading operation is continued by controlling. 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. A slot-in type loading unit that performs an unloading operation of moving and ejecting the optical disk from the unit to the slot unit, a size detection unit that detects the size of the optical disk,
A loading 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 loading detection unit provided for each size. 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. When the loading detection unit detects that the optical disc has been loaded into the rotating unit, the loading operation is stopped,
Conversely, 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, and the optical disc is detected by the ejection detection unit corresponding to the size detected by the size detection unit. And a loading control unit for stopping the unloading operation when it is detected that the optical disc has reached the ejection position. In the slot-in type optical disc reproducing apparatus, after the ejection of the optical disc is completed, the eject operation unit further ejects the disc. When the operation is performed, the slot-in type loading unit is controlled to continue the unloading operation while the eject operation is being performed. 4. When the ejecting operation is performed by the ejecting operation unit after the ejection of the optical disc is completed, the loading control unit operates the slot-in type loading unit while the ejecting operation is performed only within a predetermined period of time. The slot-in type optical disc reproducing apparatus according to claim 3, wherein the unloading operation is continued by controlling.