JPS59201268A - Optical disk record reproducing device - Google Patents

Abstract

PURPOSE:To guide disks having different diameters to drive positions securely by driving position specifying members through a detector for disk size detection provided outside of either of the support parts of the position specifying members, and moving the support parts to the 1st and the 2nd positions according to disk size. CONSTITUTION:A loading mechanism loads a disk holder capable of containing optical disks with different diameters by turning, and the position specifying members have a couple of support parts 18 and 19 which support the outer circumferential part of a disk stored in the disk holder 12. The detector 21 for disk size detection and a driving mechanism which move the support parts 18 and 19 to the 1st and the 2nd positions according to disk size by driving the position specifying members through the detector 21 are provided outside of at least either of the support parts 18 and 19.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This Light 1] This invention relates to an improvement of a digital record playback device suitable for the i71 optical DAD (digital audio disc) system.

[Technical background of the invention and its problems]

Recently, in the field of audio equipment, a digital recording/reproducing system using PCM technology has appeared and is becoming popular in order to achieve as high fidelity as possible. Tsu'! , 9. This is called digital audio, and the principle is to make the audio characteristics independent of the characteristics of the recording medium and far superior to the analog system used in the United States. This is because it has been established. In this case, the recording medium is a disc (
The DAD system that targets discs) is called the DAD system9, and its regenerative force types include optical, electrostatic, and mechanical types. In addition, no matter which of these regeneration methods is adopted, the regeneration and food that embodies it must still be able to satisfy the advanced functions and performance of various species that are not found in conventional methods75. :Required.

For example, among the optical playback methods, an optical disc record playback device using the CD (contact disk) method is used for transparent discs, Metal fitting thin film that forms pits (irregularities with different reflectances) corresponding to the conversion data? He/J-shitenaru [
An optical disc with a σ diameter of 12 crn and a thickness of 1.2 fLWL is compressed using the CLV (constant linear velocity) method to approx.
It is driven at variable rotational speeds of 00 r, p, m. In this case, the above disk has a track pitch of 16 μm and has a huge ability to perform stereo playback of approximately 1:114''. It is easy to see that they are trading on 5' ability and performance.

The next requirement for the above-mentioned optical disc record playback device is to add functionality and performance in accordance with various requirements for further improvement.
The idea is to organically combine the 4 ri Narube with an easy structure to make the accommodation Iff 17 additions.

By the way, a specific example of the additional functions required in this way is the appearance of optical discs with different diameters (for example, small diameters) that have different information storage and recording capacity than the 12 ctn diameter discs mentioned above. .

In other words, a device that handles multiple discs of different diameters is not just a matter of being able to attach and detach discs of different diameters to and from the turntable; The optical disc record playback device as a whole must be able to meet various demands.

[Purpose of the invention]

This invention was made in view of the above circumstances, and provides an extremely good optical disc record playback system that is simple and capable of reliably guiding optical discs of different diameters to the B movement position. The purpose is to provide equipment.

[Summary of the invention]

That is, the present invention provides an optical disc record playback device u1 comprising a loading mechanism for rotatably loading a disc holder capable of storing optical discs of different diameters. , 11:1 r'y13 j,? a position regulating member provided with a pair of supporting portions, a disk size detecting detector provided on the outside of at least one of the supporting portions of the position regulating member; , 'iJ mark iIγ rule? The present invention is characterized in that it includes a pivoting member f''1 that drives the l1j1 member and moves it to the first and second positions according to the size of the supporting disk.

[Side) The bottom chamber side of I-1] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
I'll explain to you. That is, the first Iy1 shows the appearance of a DAD (hereinafter referred to as DINUK) loading section of the optical disc record playback device, and the reference numeral 12 is a disc holder provided on the front surface of the cabinet 11.

This disk holder 12 is of a so-called kangaru-pocket type, which is rotatably loaded in the direction of arrow A in conjunction with the operation of the Inoect operator 13. (None of the sizes are shown in the drawings) are inserted in a straight lattice pattern, so that they can be selectively regulated at each vertical reproduction drive position facing the Dinuk receiver 14 according to the Dinuk size.

Figure 2 shows a small diameter disk 15 and a large diameter disk (second
This figure shows all the details of the storage section of the disk holder 12, which stores the disc holder 12 (not shown) in a substantially vertical manner.

That is, the disk holder 12 has a pair of elongated holes 16 and 17 at the bottom of one end surface (opposed to the disk surface) facing the disk holder l ((see FIG. 1)) for holding the small diameter disk 15. These elongated holes 16.17 have a pair of support parts 18.19 for regulating the position of the dinuks that move in the directions of arrows C and D. The disc holder 1 can be freely inserted into the disc holder 12 from inside the disc holder 12.
It is designed to be inserted in four directions and to support the outer peripheries of a small diameter disk 15 and a large diameter disk, respectively, which are housed substantially vertically. And these support parts 18
．． Each base end of 19 is supported by a slide lever 20, respectively. This slide lever 20 has an extension part 20 inclined at a predetermined angle formed at the end of the support part 19 on the right side in the figure, and a disk size detection detector 21 is mounted on this extension part 201. has been done. This detector 2 is housed as shown in Figure @3, with its detecting part 22 placed in the guide hole 23 parallel to the long hole 17 on the right side of the figure above. It is arranged to face near the periphery of the large-diameter disk 240.

Here, the detector 21 has a diZ
For example, if a large-diameter disk 24 is accommodated and faces the disk surface in the ζ state, and a small-diameter disk 15 is accommodated, the disk size is detected based on whether or not the disk surfaces face each other. They are arranged so that they are not facing each other.

Also, as shown in Figure 2 again, the slide lever 20
A substantially central portion thereof is rotatably supported by one end of a guide lever 26 via a shaft 25. The other end of the guide lever 26 is supported by the bending shaft 28 of the solenoid sylanger 27, and the middle part thereof is supported by the disc holder 1.
2 through rotation 11'' and i+29.

Here, the solenoid plunger 27 is connected to the detector 2.
1 through an electrical circuit (not shown), the large diameter disk 24 of the detector 21 is
The switch is turned on and off in response to the detection of the presence or absence of the switch.

That is, the disk holder 1 configured as described above
2 indicates that before the disc is stored, the solenoid sylanger 27 is turned off because there is no disc detection by the detector 21, so the guide lever 26 is activated via its drive 31+2g.
is rotated counterclockwise in the figure. As a result, since the slide lever 20 of the disc holder 12 is pressed in the direction of arrow C by the guide lever 26, the support portion 18.19 of the slide lever 2o is connected to the elongated hole 1.6,
It has been moved furthest in the direction of arrow C among the disks 17, and is in a state in which it can accommodate a disk 15 with a smaller diameter, as shown in FIG.

As shown in FIG. 5, the disk holder 12 replaces the small diameter disk 15 with a large diameter disk 2.
4 is stored, the detection unit 22 of the detection '+S 21
Since the disk surfaces are opposed to each other, the detector 2 detects the large-diameter disk 24 and detects the large-diameter disk 24.
Turn on. As a result, this nrenoid Zorannoya 2
7 sucks the drive glaze 28 and rotates the guide lever 26 clockwise in the figure. Here, since the guide lever 26 pushes the slide lever 2o in the direction of the arrow, the support portions 18 and 19 of the slide lever 20
Among them, the large diameter r ink 2 is moved most in the direction of the arrow.
4 position regulation is carried out to correspond to the drive position.

Further, when the disk holder 12 removes the stored large diameter disk 24, the detector 21 detects this and turns off the renoid plan sawer 27. It is in a state where it can be stored.

In this way, in the optical disc record reproducing apparatus, the disc size detection detector 2 is connected to the support parts 1B and 19 of the slide lever 20 for regulating the disc position flYt.
The slide lever 20 is mounted so as to be able to move together on one side of the lever, and when the large-diameter DINUK 24 is detected, the slide lever 20 is
<'Nt was constructed so as to super-move and guide it to a predetermined position. Therefore, the above-mentioned optical disc record playback device has a simple configuration, can improve its controllability as much as possible, and can reliably prevent erroneous operations.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and that various modifications can be made without departing from the gist of the invention.

[Deer in month c ↓, ÷]

As mentioned above, this development is an easy-to-prepare book and is capable of automatically guiding optical discs of 5 or 7 different diameters to the same position. /ζ Attendance: We can provide optical disc record playback equipment.

[Brief explanation of drawings]

;::'511 Nei tar This invention has been used to show the foreign currency of the 1ζ optical recording record Iko J raw se Optical disk record 11 related to one actual way ≦ dog f, F parent diagram showing raw device + 'i1', Figure 3 dove 132]: Dinukuno of i1! ”, A plan view showing the state of jF'3, and a plan view showing the operation of Fig. 2, which deviates to the 154 and 5th garden;
・INOEF) j7・p Nobuko, 14...Dinuku receiver, 15...Small diameter disk, 16.17...Long hole,
18.19...Support part, 20...Slide lever, 2
1...Detection hole 22...(Protrusion part, 23...Through hole, 24...Dinuk with large diameter, 25...Shaft, 26...Guide lever, 27...Nlenoid sorannoya , 28...
・Drive shaft, 29... Rotation shaft. Representative Patent Attorney Suzue Takehiko 2nd Director 3rd Figure τ542

Claims (1)

[Claims] A disc holder capable of storing a 5" 4-diameter optical disc. An optical disc record consisting of a fully rotatable loading system 4j8. A pair of support parts that support the outer periphery of the disk are provided at the position of the peach-splitting member, and a Dinuk size provided at least one of the support parts of the iIJ support part of the 1 member.゛Detection/Direction 2:) In response to this detector, move the elbow regulating part Io at the above position [)I
・131 and ・:i according to J support disk size
Move it to position 42. J, 1:・fi with trunk movement orange structure
l! An optical disc record with i/ζ as t:1 characteristic.''