JPH1064154A - Disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the time for detecting plural disks by storing the presence or absence of a disk detected by a detecting means into a memory means during the time when setting a prescribed disk into a disk driving means from a disk housing means. SOLUTION: A transporting motor controller moves the selected disk 2 upward via a through-hole 18 formed on the bottom of the disk housing mean 3 or 3b by turning a lifter 19. In this state, part of the disk 2 shuts off the light of a light emitting element 50 disposed in the spiral part 49 of the disk detecting means 6a or 6b and shuts off the light receiving signal of a light receiving element 51 side. A CPU 53 has the address information of the means 3a or 3b and, therefore, judges that the prescribed disk exists within the assigned address when this state is detected by a disk detecting circuit 52. The CPU erects a flag 1 at the address of an EE-PROM 7 in which the address information is previously written and executes storage. Unless the light from the element 50 is shut off, the 0 flag indicating the absence of the disk is erected and the storage into the ROM 7 is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of selecting an arbitrary disk from disk storage means capable of storing a plurality of optical disks and the like, and setting the disk in the disk storage means before setting the disk in the disk drive means via the disk transport means. The present invention relates to a disc reproducing apparatus capable of detecting the presence or absence of a disc.

[0002]

2. Description of the Related Art Conventionally, a plurality of disks such as a CD or an MD as an optical disk are provided in a disk storage means, and a disk at an arbitrary address is designated. A disc reproducing or recording device (hereinafter referred to as a disc reproducing device including a disc recording device) which is brought into a disc driving device for reproducing or recording a disc through an unloading device to perform reproduction or recording. Will be described in detail below), and an autochanger-type disc reproducing apparatus having various configurations has been proposed.

In such a conventional autochanger-type disc reproducing apparatus, when a predetermined music piece to be reproduced is designated and a reproducing operation is performed, it is determined whether or not a designated disc is present in a disc accommodating means accommodating a plurality of discs. Regardless, the disk reproducing apparatus detects the presence or absence of the disk specified by the disk storage means by performing the following operations.

[0004] First, the disk unloading means is moved along the disks in the disk storage means in which a plurality of disks are arranged, moves to a specified disk address position, and stops at the specified disk position. Next, the predetermined disk in the disk storage means is unloaded into the disk unloading means. Next, the disc carrying means sets the designated disc at the position of the disc driving means. For example, by detecting a focus control signal using a focus control method of an astigmatism method, the designated disk set in the disk drive means is set to the disk drive means, that is, in the disk storage means. Judgment was made whether there is a disk or not.

[0005]

In the conventional disk reproducing apparatus, as described above, the presence or absence of a disk at an arbitrary address in the disk storage means is detected using the focus control signal of the disk drive means. The presence or absence of a disk in the disk storage means cannot be determined unless the operations described in the above prior art are completed.

That is, the time for selecting an arbitrary address of the disk storage means from the disk storage means, the time for unloading the disk from the disk storage means, the time for transporting the unloaded disk to the disk drive means, and the time for the disk drive means. The time required to apply the focus servo to the disk to detect the presence or absence of the disk, and the sum of the above times is the time required to finally determine the presence or absence of the disk, so the detection time of the presence or absence of the disk is extremely long.

[0007] Therefore, when the specified disk is not in the disk storage means, there is a problem that the waiting time until reproduction becomes extremely long by searching for an adjacent disk address.

An object of the present invention is to provide a disk reproducing apparatus which solves the above-mentioned problems. An object of the present invention is to reduce the time for detecting the presence or absence of a plurality of disks arranged in a disk storage means. It is intended to obtain a disc reproducing apparatus which is shortened and immediately becomes in a reproducible state when a disc address such as music selection is designated, and when there is no disc in the disc storage means, it is immediately understood that there is no disc. .

[0009]

As shown in FIG. 1, a disk reproducing apparatus 1 according to the present invention uses a disk storage device 3a, 3b capable of storing a plurality of disks 2 as an example. In the disc reproducing apparatus 1 in which at least one selected disc 2 is set in at least one disc driving means 5a or 5b via a disc transport means 4 for carrying out the disc, the disc storage means 3a, 3
b, a disc 2 at an arbitrary address is selected, and when the disc is unloaded, the discs are detected by the disc detecting means 6a, 6b for detecting the presence or absence of the disc 2 stored in the disc storing means 3a, 3b, and the disc detecting means 6a, 6b. Storage means 7 for storing the information stored in the disk storage means 3a, 3b, while the disc detection means 6a, 6b set the predetermined disk 2 in the disk drive means 5a, 5b via the disk transport means 4. The presence / absence of the detected disk is stored in the storage means 7 in association with the address information of the disk.

According to the present invention, a disk at an arbitrary address of the disk storage means is selected, and the selected disk is taken out of the disk storage means by the disk discharge means.
By providing the disk detecting means for detecting whether the selected disk is actually stored in the disk storing means, it becomes possible to determine the presence or absence of the disk at the point where the operation of removing the disk has been completed. Therefore, the time required for discriminating the presence or absence of a disc in the disc storage means can be reduced, and by storing the discrimination result, the next time the same address is selected, a disc reproducing apparatus capable of immediately discriminating the presence or absence of the disc at the time of selection. Is obtained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus (including a disk recording apparatus and a disk recording / reproducing apparatus) according to the present invention will be described below with reference to FIGS.

FIG. 1 is a system diagram showing one embodiment of the disk reproducing apparatus of the present invention, FIG. 2 is a perspective view showing one embodiment of the disk reproducing apparatus of the present invention, and FIG. 3 is one embodiment of the disk reproducing apparatus of the present invention. FIG. 4 is a front view showing an embodiment, and FIG. 4 is an explanatory diagram of a detection unit used in the disk reproducing apparatus of the present invention.

Before describing the system diagram of the present embodiment in FIG. 1, the overall mechanical structure of the disk reproducing apparatus of the present embodiment will be described with reference to FIGS.

In FIGS. 2 to 4, at least one disk drive means 5a is provided in the center of the casing 9 (see FIG. 3) of the disc reproducing apparatus 1 in the depth direction of the casing 9 from the front panel side. 5 b is disposed on the chassis 10.

Disk storage means 3 on which cartridges storing a plurality of CDs or MDs can be arranged side by side from the panel side to the left and right sides of the disk drive means 5a and 5b.
a and 3b are provided.

These disk storage means 3a and 3b are formed so that the disk 2 is stored and held in a plurality of grooves formed by a plurality of partition plates 11a and the next partition plate 11b, respectively. The front side and the top side are formed with openings.

These left and right disk storage means 3a and 3
b is slidable into the casing 9 along the chassis 10 from the panel side, and the replacement of the disk 2 can be easily performed by pulling out these left and right disk storage means 3a and 3b. I have.

Rails 12a and 12b are provided between the left and right disk storage means 3a and 3b and the disk drive means 5a and 5b along the upper surface of the chassis 10 in the depth direction from the panel side.
b, and the disk transport means 4 is slidably disposed along both rails 12a and 12b.
When the wire 13 schematically shown in FIG. 1 is driven by the motor 14, the wire 13 moves in the direction A.

The disk transport means 4 is provided with the above-mentioned rail 12a.
Parts 13a and 13b sliding along and 12b
A disk loader 15 rotatable with respect to the sliding portions 13a and 13b;
a and 3b and a disk transport means 4 for bridging the disk drive means 5a and 5b arranged at the center of the casing 9.

First, the sliding portions 13a and 13b of the disk transport means 4 will be described with reference to the front view of FIG. A disk loader 1 to be described later is provided on the upper surfaces of the sliding portions 13a and 13b.
5, a guide of an inclined portion 17 is formed so that the disk 2 can be easily carried out from the disk storage means 3a and 3b.
As shown in FIGS. 4A and 4B, they are inserted into through holes 18 formed in the bottom surfaces of the left and right disk storage means 3a and 3b,
Lifters 19 and 19 for moving the disk 2 held between the partition plates 11a and 11b upward are pivotally mounted.

The lifters 19 and 19 are driven by a motor, as will be described later, or are operated by a plunger or the like.

The disk loader 15 of the disk transport means 4 is formed in a substantially square casing into which the disk 2 can be inserted, and as shown in FIG.
As shown in (1), it can be turned to the near side and can be placed on the disk drive means 5a and 5b.

In the center of the casing of the disk loader 15, a through hole 21 for mounting the clamper 24 together with the disk 2 on the turntable 20 provided on the disk driving means 5a and 5b is formed.

Openings 23 (see FIG. 2) are formed on the left and right walls of the disk loader 15 so that the disks 2 arranged in the left and right disk storage means 3a and 3b can be inserted therein. The clamper 24 for holding the disc 2 on the turntable 20 and the drum-shaped guide rollers 25, 25 # for holding the outer periphery of the disc 2 inserted in the disc loader 15 at four locations are formed around the through hole 21 by 90 mm. It is located at an angle position in degrees.

These four guide rollers 25, 25 #
Is elastically held when the disc 2 selected from the disc storage means 3a and 3b is inserted into the disc loader 15 through the left and right openings 23, and the arrow D shown in FIG. It is configured to move in a radial direction as shown by.

Further, the disk unloading section 16 constituting the disk transport means 4 is a cuboid-shaped spar member having an opening at the lower surface and arranged so as to bridge in the left and right side wall directions of the casing 9 of the disk reproducing apparatus 1. And at its left and right ends, drum-shaped guide rollers 27a and 27b for regulating the upper limit position of the disk 2 moved upward by the disk detecting means 6a and 6b and the lifter 19 are substantially at the centers of the left and right disk storage means 3a and 3b. A disk pressing roller 30 rotatably pivotally attached to the leg hanging down to the position and movable along the longitudinal direction of the beam member of the disk unloading section 16 is pivotally attached to the support member 31.

The support member 31 can be moved in the left-right direction, for example, along a slit 33 via a drive motor, which will be described later, provided in the beam member of the disk unloading section 16.
The disc 2 is pressed and inserted into the disc loader 15. Of course, the disk transport section 16 is configured to move along the rails 12a and 12b in synchronization with the sliding sections 13a and 13b.

An overall system diagram of the disk reproducing apparatus 1 having the above-described configuration will be described with reference to FIG.

In FIG. 1, each of the above-mentioned mechanisms is shown in a plan view, and only one disk drive means 5a is shown in the center. Disk storage means 3a and 3b are provided on the left and right of the disk drive means 5a, and a plurality of disks 2 are provided between the partition plates 11a and 11b.

The disk transport means 4 is connected to a disk loader 15
And rails 12a and 1 together with sliding portions 13a and 13b.
The motor 14 for sliding in the direction A of 2b
One end of the wire 13 wound endlessly between the pulley fitted to the shaft of the motor 0 and the motor 14 is locked to, for example, one end of a sliding portion 13a, and the disk transport means 4 is moved longitudinally of the disk storage means 3a and 3b. The motor 14 is controlled by the transport motor controller 41 in order to move along the direction (A direction) and stop at a predetermined address position.

The motor or the plungers 42a and 42b for driving the lifter 19 for pushing up the selected disk 2 from below the disk storage means 3a and 3b are also controlled by the transport motor controller 41.

The discs 2 stored in the left and right disk storage means 3a and 3b are selected and moved upward by the lifter 19,
When the upper end of the disk 2 is in contact with the guide roller 27a or 27b, the disk 2 is inserted into the disk loader 15 through the left and right openings 23 of the cartridge of the disk loader 15 and held by the guide roller 25. A motor 43 for moving the disk pressing roller 30 provided at the tip of the support member 31 along the slits 16 of the support member 31 in the direction of arrow B, and the disk drive means 5a or 5b using the disk loader 15 as the support shaft 14 as a rotation axis. A motor 44 for lying down in the direction of arrow C (see FIG. 1)
Are both controlled by the transport motor controller 41.

When the disk loader 15 is turned down,
The disc and the clamper 24 are placed on the turntable 20 through the magnetic head, and the clamper 24 is attracted to the turntable 20 by magnetic force. The clamper 24 holds the disc 2 on the turntable 20, and the disc 2 is a plunger (not shown). As a result, the guide roller 25 is spread in the direction of arrow D and released from the disk loader 15, and the disk loader 15 is returned to the original vertical position. The servo controller 47 performs seek servo, focus servo, tracking servo, and the like of the motor 45 for rotating the turntable 20 and the optical pickup 46.

Further, the disk detecting means 6 hanging from both ends of the beam member of the disk unloading part 16 of the disk transport means 4.
4A and 4B, a flag-like portion 49 is formed by bending the tip of a downwardly supporting member 48 into a U-shape as shown in the front and side views of FIGS. 4A and 4B. The light emitting element 50 and the light receiving element 51
It is detected whether or not the disk 2 is present between the partition plates of the disk storage means 3a and 3b by the disk 2 inserted therebetween. The detection signal from the light receiving element 51 is supplied to a disk detection circuit 52.

The transport motor controller 41, the servo controller 47, and the disk detection circuit 52 are connected to a system controller 53 composed of a microcomputer (CPU) via a bus. The CPU 53 has storage means such as a normal work ROM 54 and RAM 55, and further has an electrically writable and erasable semiconductor storage means (EE-PROM) 7.
In the stage where the disk 2 is carried out, the presence or absence of the disk is detected.
As shown in B, the digital data is converted into digital data via the ADC 61 in the transport motor controller 41 and supplied to the CPU 53.
3 to the EE-PROM 7 to store the disk address and data from which it is possible to determine whether the disk 2 is stored in the disk storage means 3a and 3b.

Further, the ADC 53 in the video audio controller 56 shown in FIG.
Is also connected. Also, the disk drive means 5a and 5b
The playback disk from the optical pickup 46 is also provided to the video audio controller 56. The video or audio data is converted into data corresponding to each format by a video / audio decoder 57, the video signal is displayed on a monitor display CRT or the like via an amplifier 58a, and the audio signal is
The sound is supplied to the speaker 60 via 8b and is emitted.

The operation of the present invention with the above configuration will be described.
Although not shown in FIG. 1, when an instruction to select a disk 2 at a predetermined address is given from the disk storage means 3a or 3b to the disk reproducing device 1 via an operation unit or a commander or the like, the CPU 53 causes the work ROM 54 and RAM53
, The motor 14 is driven to rotate the motor 14 to move the disk transport means 4 to a predetermined designated address position and stop it.

Next, the transport motor controller 41 rotates the lifter 19 to move the selected disk 2 through the through hole 18 formed in the bottom of the disk storage means 3a or 3b (FIG. 4A).
From the broken line to the dashed line. When the selected disk 2 is moved upward, the disk 2 in the state shown by the broken line in FIGS. 3 and 4 is moved upward to the position shown by the dashed line, and the upper end of the outer periphery of the disk 2 is formed in the disk unloading section 16. It comes into contact with the guide roller 27a.

In this state, as shown in FIGS. 4A and 4B, a part of the disk 2 blocks the light of the light emitting element 50 disposed on the flag 49 of the disk detecting means 6a or 6b, and Cut off the light receiving signal. When this state is detected by the disk detection circuit 52, the CPU 53 has the address information of the disk storage means 3a or 3b, and determines that the predetermined disk 2 is present in the designated address, and executes EE.
For example, a flag is set to 1 indicating that a disc is present at a corresponding address in the PROM 7 in which address information is written in advance, and storage is performed.

When the disk 2 is moved upward, the disk detecting means 6
If the light from the light emitting element 50 of a or 6b is not blocked, a flag of "0" is set to indicate that there is no disk at a predetermined designated address, and the flag is stored in the EE-PROM 7.

Of course, the designated address may be stored in a storage device such as a hard disk at the same time as the detection of the presence / absence detection information of the disk.

In this state, that is, the selected designated disk 2 is detected by the detection means of the disk transport means 4 and the result is immediately emitted from the speaker 60 or the like as a display CRT 59 or an alarm or reproduced sound. It is possible to confirm it.

The thus specified and selected disk 2
The information on whether the disk 2 is stored in the disk storage means 3a or 3b and whether the disk 2 is stored in the storage means 7 is sequentially stored, so that the already selected specified disk address is specified again. The CPU 53 first executes EE
-If the disk address and the presence / absence information of the disk 2 stored in the PROM 7 are read, when the disk 2 is not stored in the disk storage means 3a and 3b, the operation of selecting the disk 2 is not performed and the disk is transported. The means 4 can also be set to the non-operation state, so that unnecessary operation is not performed.

In the present embodiment, the peripheral side of the disk 2 further specified and selected is placed on the disk pressing roller 30 of the support member 31.
When the disc is inserted into the casing through the guide of the inclined portion 17 of the sliding portion 13a or 13b while pressing the periphery of the disc 2 against the guide roller 25 by pressing the guide roller 25, the guide roller 25, 25 # in the casing becomes an elastic member. The disc 2 can be inserted into the casing through the opening 23 of the casing by opening the disc 2 at a position larger than the diameter of the disc 2 against the biasing force at the position shown in the direction of arrow D in FIG. At this time, when the diameter portion of the disk 2 passes between the guide rollers 25, 25, the guide rollers 25, 2 are elastically held.
5 is a disk 2 in the disk loader 15 due to elastic force.
Is adapted to hold the outer periphery of the disk so as to be in the middle of the casing.

Such a transfer operation is performed by controlling the drive of a motor 43 via a transfer motor controller 41.

Next, the disc loader 15 is brought to the position of the disc driving means 5a or 5b, the motor 44 is controlled via the transport motor controller 41, and the disc 2 is turned around the support shaft 14 in the direction C so that the disc 2 is turned. Table 2
It is held on 0 via the clamper 24. The guide rollers 25, 25 # are moved in the direction of arrow D by a plunger or the like against the elastic force to release the disk 2, and the disk loader 15 is returned to the original position.

Next, by rotating the motor 45 and the turntable 20 via the servo controller 47 and moving the optical pickup 46 in the radial direction of the disk by the seek servo, focus servo, tracking servo and the like are performed to read the disk data. At the time when the pickup is completed and the reproduction is completed, the CPU 53 sets the name of the played music to EE-
If the data is stored in the corresponding disk address of the PROM 7, more reliable data is stored in the storage means 7, and when the same disk 2 is selected again and reproduction is specified, the data of the disk 2 at the specified address is immediately stored. EE-P for the contents of songs
It is possible to read the information from the ROM 7 and display it on the display CRT 59 to check the contents, thereby expanding the utility value.

Next, the disc 2 having completed the reproducing operation is controlled by the reverse of the above-described loading operation, and is returned to the predetermined position of the disc storage means 3a or 3b by the transport means 4. At this time, the disk transport means 4
The inclined portions 17, 17 of 3a, 13b
a or 3b is stopped at a predetermined position,
5, the pair of left or right guide rollers 25, 25 move the disk 2 held by the guide rollers 25, 25 #.
The disk 2 is pushed out from the opening 23 of the casing of the disk loader 15 by a plunger or the like in the opposite direction to the disk storage means 3a or 3 via the inclined portion 17.
b is stored at a predetermined position.

In the above-described embodiment, the presence or absence of the disk 2 is detected when the selected disk is moved upward by the lifter 19, but the disk 2 is pressed by the disk pressing roller 30 or the disk loader 15 It is also possible to detect the presence / absence of a disc by arranging detection means at each position in the inserted state or the like. That is, the detection may be performed while the disk is being transported.

In the present invention, the case where a disc such as a CD is reproduced has been described. However, even if the disc is built in a cartridge like an MD, the same detection as in this embodiment can be performed by detecting the upward movement state of the cartridge. It is. Further, it is apparent that the disk detecting means 6a and 6b can be easily detected at the time when the disk pressing roller 30 is moved.

[0051]

According to the disk reproducing apparatus of the present invention, the storage state of a disk containing a plurality of disks can be determined in a short time, and when no disks are stored, the selection operation and the disk transport operation are not performed. As a result, a disk reproducing apparatus that can immediately determine the disk selection state can be obtained.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an embodiment of a disk reproducing apparatus according to the present invention.

FIG. 2 is a perspective view showing one embodiment of a disc reproducing apparatus of the present invention.

FIG. 3 is a front view showing one embodiment of the disk reproducing apparatus of the present invention.

FIG. 4 is an explanatory diagram of a detection unit used in the disk reproducing apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 disk reproducing device 2 disk 3a, 3b disk storage means 4 disk transport means 5a, 5b disk drive means 6a, 6b disk detection means

Claims (3)

[Claims] 1. A method in which a selected disc is set in at least one disc drive means via a disc transport means for unloading a disc at an arbitrary address from a disc storage means capable of storing a plurality of discs, and reproduced. In the disk reproducing device according to the above, a disk detecting means for detecting the presence or absence of a disk stored in the disk storing means at the time of selecting a disk at an arbitrary address from the disk storing means and unloading the disk, Storage means for storing information detected by the means, and a disk detected by the disk detection means while the predetermined disk is set from the disk storage means to the disk drive means via the disk conveyance means. A disk characterized in that the presence or absence is stored in the storage means in correspondence with the address information of the disk. Playback device. 2. The disk reproducing apparatus according to claim 1, wherein said disk detecting means is provided on said disk transport means. 3. The apparatus according to claim 1, wherein music information of a disc corresponding to the address information stored in said storage means is reproduced and added to said address information of said storage means and stored. The disc reproducing device according to the above.