KR100754159B1 - A disk adaptor and a disk driving apparatus - Google Patents

Abstract

Disclosed disc housing adapters and disc drive devices include a reflector for identifying the type of disc in the adapter, and a disc drive device for identifying the type of disc by irradiating light to the reflector and detecting the reflected light. A photodetector is provided. According to such a configuration, it is possible to provide a large number of identification marks which can identify the type of disc while varying the reflection angle and the amount of reflected light provided in the reflector provided in the adapter, so that not only the size and capacity of the disc, but also the type and disc format of the product. You can identify all the different types of disk, including the type of.

Description

Adapter and disk drive apparatus for disk storages {A disk adapter and a disk driving apparatus}

1 shows a disc cartridge and a disc drive device having a conventional disc identification mechanism;

2 is a view showing a disk housing adapter having a conventional disk identification mechanism;

3 is a view showing a disk housing adapter and a disk drive device having a disk identification mechanism according to a first embodiment of the present invention;

4 to 6 are diagrams showing applications of the disc identification mechanism shown in FIG. 3;

FIG. 7 shows a disc housing adapter and a disc drive device having a disc identification mechanism according to a second embodiment of the present invention; FIG.

8 to 10 show examples of utilization of the disc identification mechanism shown in FIG.

<Description of Symbols for Major Parts of Drawings>

20 ... Adaptor for disk storing 21 ... Adaptor body

23 (23a-23f) ... Reflector 24 ... Positioning hole

25 ... disk 100 ... disk drive unit                 

110.Rotating chassis 120.Photodetector

121,122 ... 1,2 photodetector 123 ... LED

124 ... Differential Amplifier

The present invention relates to a disc housing adapter for accommodating a disc, which is an information recording / reproducing medium, and a disc drive device for recording and reproducing a disc. More specifically, an identification mechanism for identifying a type of disc is improved. And a disk drive device.

Recently, as shown in FIG. 1, a disk which rotatably houses a recording / reproducing medium on a disk 2, such as an optical disk or a magneto-optical disk, is provided for use in a disk drive while selectively opening and closing the shutter 3. The cartridge 1 is widely used as a recording medium for multimedia such as video and audio. In addition, with the development of multimedia, such miniaturization and high capacity of such a recording medium are required, and various types of discs have emerged according to their sizes and recording capacities.

For example, in the case of a DVD-RAM, a general single-sided disc type that records information only on one side of the disc, a double-sided disc type that allows information to be recorded on both sides, when classified by recording density, which is a standard of recording capacity, In addition, the single-sided double recording layer type in which the recording layer on one side is doubled to record information for each layer, the double-sided double recording layer type in which it is applied to both sides, and the same single-sided disc type have a narrower track pitch. Various types of discs having different recording densities are popular.

In addition, in terms of size, the most common diameter 120 mm discs and 80 mm diameter discs having higher storage capacity while making them smaller are used. Most of the 120mm diameter disks are used in the form of disk cartridges as shown in Fig. 1, but 80mm diameter disks are mostly designed for general-purpose 120mm diameter disk cartridges, except in the case of specially used drive units. In consideration of compatibility, it is generally used to be housed in the adapter 10 as shown in FIG. The adapter 10 includes a holder 12 on which an 80 mm disk 13 is seated and supported, and an adapter body 11 to which the holder 12 is coupled. The adapter body 11 includes a 120 mm diameter disc cartridge ( 1; see FIG. 1). Therefore, even in the case of a disc drive device designed to use a 120 mm diameter disc cartridge 1, the use of this adapter 10 also enables mounting of a 80 mm diameter disc 13.

However, although the mounting is possible, the recording and reproducing methods by the disc drive device should be different depending on the disc size and recording density. For example, the total distance and the movement distance between the tracks of the optical drive for recording and reproducing of the disc drive device vary depending on how many millimeters in diameter the disc is, and the recording layer is a single layer or a double layer even in the difference in recording density. The method of recording and playing back information in the disc drive device varies depending on the recognition. Therefore, when the disc is mounted in the disc drive, a structure for identifying the type, such as size and recording density, is needed.

The structure shown in FIG. 1 is a conventional identification structure that has been proposed to identify such various disc types. Referring to the drawings, the identification magnets 5 and 15 for representing the high capacity disks in the disk cartridge 1 or the adapter 10 (see FIG. 2) rotatably received in the case 3; 2). In the disk drive device 6, a magnetic sensor 7 for detecting the magnets 5 and 15 is provided. Therefore, when the disc cartridge 1 or the adapter 10 is mounted in the disc drive device 6, the magnetic sensor 7 detects the magnetic force of the magnets 5 and 15 so that the disc cartridge 1 or the adapter 10 It is determined that the disks 2 and 13 stored in the disk are of high capacity, and the result is transmitted to a controller (not shown) of the disk drive device 6 so as to control according to the type of the disk. On the other hand, in the case of a low capacity disk, the above-mentioned identification magnet 5 is not provided. In this case, since the magnetic force is not detected in the magnetic sensor 7 even when the disc cartridge 1 or the adapter 10 is mounted, it is determined therefrom that the currently mounted disc cartridge 1 or the adapter 10 has received a low capacity disk. Done.

By the way, such a conventional method distinguishes the type of disc by turning on / off of the magnetic sensor 7 with or without the magnet 5, and thus, it is only a degree of distinguishing two types of high capacity and low capacity. . Therefore, in order to distinguish the various types of discs as described above with this structure, the number of magnets is varied according to the type of discs, and the magnetic sensor 7 is also provided with a number so as to detect the maximum number of magnets. Therefore, the magnetic sensor 7 is discriminated by the number of being turned on, or magnets having different magnetic strengths are installed according to the type of the disc, and the magnetic sensor 7 is not simply turned on or off. It should be composed of precise circuit that can distinguish the strength of.

However, increasing the number of installations of magnets and magnetic sensors not only reduces the size and weight of the disk drive device, but also lowers manufacturing costs and productivity, while differentiating the strength of the magnetic force also requires a precise circuit configuration. In addition, there is a risk that the type of disc will be wrong if the magnetic force of the magnet deteriorates. Therefore, there is a need for a new mechanism capable of identifying various types of disks while having a simpler structure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above necessity, and an object thereof is to provide an adapter and a disc drive device for a disc storage device having a simple structure and an improved disc identification.

The disk storage adapter of the present invention for achieving the above object, the adapter body; A holder supporting the disk and coupled to the adapter body; It is provided in the adapter main body, characterized in that the reflection unit for reflecting the incident light to a predetermined photodetector to be able to identify the type of the disk according to the reflected light.

In addition, the disk drive apparatus of the present invention for achieving the above object is, the recording and reproducing unit for recording and reproducing information on the disc accommodated in the adapter, by irradiating light to the reflecting portion provided in the adapter and detecting the light reflected therefrom And a photodetector for identifying the type of disk.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 to 5 show a disc housing adapter and a disc drive device equipped with a disc identification mechanism according to the first embodiment of the present invention.

First, referring to FIG. 3, the disk accommodating adapter 20 mounts the adapter main body 21 and the holder 22 inserted into the adapter main body 21 by seating the 80 mm disk 25 which is an information recording and reproducing medium. Equipped. And the upper and lower surfaces of this adapter 20 are provided with the reflecting part 23 which can reflect the light incident from the predetermined light source. The reflector 23 is provided to identify the type of the disk 25 accommodated in the adapter 20. The reflector 23 may be attached or printed with a label capable of reflecting light, or may be coated with a reflective film made of aluminum. Can be formed. The angle of the reflector 23 is set differently according to the type of the disk 25. That is, it may be formed in parallel with the horizontal plane of the adapter body 21 (see Fig. 4), or may be formed to have a predetermined inclination (see Figs. 5 and 6). This is intended to take advantage of the fact that if the reflection angle of the light is set differently, the reflected light is changed in each case, and when the change is detected, the type of the disc can be identified. The detailed mechanism will be described later. Reference numeral 24 denotes a positioning hole into which the positioning pin 114 of the disc drive apparatus 100 is inserted, reference numeral 26 denotes a write preventing selection hole, and reference numeral 27 denotes a shutter.

The disk housing adapter 20 is mounted on the tray 130 and inserted into the disk drive device 100. The disk drive device 100 is provided with a rotating chassis 110 that is rotated in the directions of arrows A and B by a predetermined cam mechanism (not shown), and a turntable on which the disk 25 is seated on the rotating chassis 110. And a recording / reproducing unit including a 112, a spindle motor 111 for rotating the turntable 112, an optical pickup 113 for recording and reproducing information on the disk 25, and the reflector 23. ), A photodetector 120 is provided for identifying the type of the disc 25 by irradiating light and detecting the reflected light. The rotating chassis 110 descends in the direction of arrow A when the tray 130 comes out as shown in the drawing, and ascends in the direction of arrow B when the tray 130 enters the inside, wherein the disk 25 of the adapter 20 is turnedtable. Seated at (112) and the positioning pin 114 is also fitted in the positioning hole (24).

In addition, the photodetector 120 is a reflection unit (23 (23a, 23b, 23c)) when the disk housing adapter 20 is mounted to the disk drive device 100, as shown in Figs. Located below the light emitting diode 123, and the first and second photo detectors 121 and 122 are arranged symmetrically to the left and right about the LED 123 is configured. The signals detected by the first and second photodetectors 121 and 122 are summed through the differential amplifier 124 and output as a predetermined result.

The disc identification operation using the reflector 23 and the photodetector 120 proceeds as follows. First, when the adapter 20 accommodating the disk 25 is inserted into the disk drive device 100 by taking the tray 130, the rotating chassis 110 is raised in the direction of arrow B so that the disk ( 25) will be seated. In this case, the photodetector 120 is positioned below the reflecting unit. First, consider the case of the adapter 20 in which the reflecting unit 23a is horizontally formed as shown in FIG. 4. In this case, when the light is irradiated from the LED 123 to the reflector 23a, the light reflected from the reflector 23a is reflected symmetrically to the first photodetector 121 and the second photodetector 122. . That is, the amount of light received by the first photodetector 121 and the amount of light received by the second photodetector 122 are the same. In this case, the result summed by the differential amplifier 124 is output as "0", so that the disk drive device 100 is provided with the disk 25 in the adapter 20 currently mounted on the horizontal reflector 23a. It is recognized that the disc of the A type provided with the identification mark.

Next, as shown in FIG. 5, in the case of the adapter having the inclined portion 23b upwardly upward, the light irradiated from the LED 123 is equally reflected to the first and second photo detectors 121 and 122. More light is reflected to the second photodetector 122. Therefore, the result through the differential amplifier 124 is output as "-" value, which means that the mounted adapter 20 has the right upward inclination reflecting portion 23b as an identification mark, and houses a disk of type B. Will mean.

In addition, as shown in FIG. 6, when the reflecting unit 23c has an incline upwardly to the left, the light irradiated from the LED 123 is not equally reflected to the first and second photodetectors 121 and 122. More light is reflected to one photodetector 121. Therefore, the result through the differential amplifier 124 is output as a "+" value, which means that the mounted adapter 10 is equipped with an identification mark with a reflecting portion 23c of the left upward tilt as an identification mark, It means that there is.

Therefore, if the reflection angle is changed by varying the inclination of the reflector 23 in this way, the resulting value is output differently. Therefore, if the disc type is matched with each reflection angle, it is possible to distinguish various disc types. We can fully play the role of identification mark.

As the easiest application example, it is possible to easily distinguish the 120mm disk stored in the disc cartridge and the 80mm disk stored in the adapter 20 as described above. For example, the disk cartridge may be provided with the reflector 23 as described above, but as shown in FIG. 6, the reflector 23c may be inclined upwardly to the left, and the adapter 20 may be moved to the right as shown in FIG. 5. If it is prescribed to form the reflecting portion 23b of the upward inclination, when the output value through the differential amplifier 124 is a "-" value, the 80mm disk 25 in which the currently mounted disk is accommodated in the adapter 20, the output value When this value is "+", it is possible to determine that the currently loaded disk is a 120mm disk in the form of a disk cartridge.

In addition, if the difference in the amount of light reflected by the reflecting unit in addition to the change in the angle can be made more and more cases. That is, even at the same reflection angle, for example, when the colors of the reflector 23 are changed, the amount of reflected light is different. Then, the scale of the value output through the differential amplifier 124 is changed, which can be used to identify another type of disk. Of course, the horizontal case is an exception because the output value is "0" even if the scale is changed. As a method of generating the difference in the amount of light as described above, the difference in color may be given as described above, or the amount of light may be changed by changing the material or area of the reflector 23. Therefore, only a change in the amount of reflected light can serve as an identification mark for distinguishing the type of the disc, and in particular, when combined with the reflection angle, the number of output values can be greatly increased without adding a separate device. It can cover various kinds of disks sufficiently.

On the other hand, in the present embodiment, assuming that the disk 25 of the adapter 20 can use both sides, the reflecting portions 23 (13a, 13b, 13c) are installed on the upper and lower surfaces of the adapter body 21. Therefore, even if the adapter 20 is inserted upside down, the same identification operation can be received by the photodetector 120. If a disc using only one side is inserted with the adapter upside down, since there is no reflecting part, It is impossible to read and an error message is generated, and the user can see it to confirm that it is incorrectly installed.

Next, Figs. 7 to 10 show a disc housing adapter and a disc drive device equipped with a disc identification mechanism according to the second embodiment of the present invention. In the drawings, the same reference numerals are given to the same members as those in the first embodiment.

This embodiment is substantially the same as the configuration of the first embodiment, except that the reflecting portions 23 (13d, 13e, 13f) are formed on the left and right sides of the adapter 20, and the photodetector 120 also has a disc accordingly. The point provided in the side wall of the drive apparatus 100 differs.                     

In the above configuration, when the adapter 20 containing the 80 mm disk 25 is inserted into the disc drive device 100 by the tray 130, the rotating chassis 110 is raised in the direction of arrow B to turntable 112. The disk 25 is seated on the back panel. In this case, the photodetector 120 is located on the side of the reflector 23. When the reflector 23d is horizontally formed as shown in FIG. 8, the photodetector 120 is irradiated from the LED 123 to the reflector 13d. Light is symmetrically reflected to the first photodetector 121 and the second photodetector 122. Therefore, the result summed up by the differential amplifier 124 is output as "0", so that the disk drive device 100 in the currently mounted adapter 20, the disk 25 to the horizontal reflector 23d It is recognized that the disc of the A type provided with the identification mark.

And, as shown in FIG. 9, when the reflecting unit 23e has an inclination lowered to the right, the light irradiated from the LED 123 is not equally reflected to the first and second photodetectors 121 and 122 and the second is not. More light is reflected to the photodetector 122 side. Therefore, the result through the differential amplifier 124 is output as a "-" value, which is provided with an identification mark with an inclined reflector 23e of the inclined adapter 20 mounted down to the right, and accommodates a B type disk. It means that there is.

In addition, when the reflecting part 23f has the inclination which goes down to the left side like FIG. 10, more light amount is reflected to the 1st photodetector 121 side. Therefore, the result through the differential amplifier 124 is output as a "+" value, which is provided with an identification mark with a reflecting portion 23f of an inclination in which the mounted adapter 20 descends to the left side, and accommodates a C type disk. It means that there is.                     

Also, by varying the reflection angle and the material, size, and color of the reflecting part, the scale of the reflected light amount can be changed, thereby creating a large number of cases that can sufficiently cover various disc types without adding a special device. have.

Therefore, the disk accommodating adapter and the disk drive apparatus according to the present invention can provide many cases in which various types of discs can be identified with a simple structure of detecting the reflected light of the reflecting portion provided in the adapter with a photodetector. . Therefore, it is possible to identify not only the size and capacity of the disk but also various types of disk such as the type of the product and the type of the disk format.

As described above, the disk housing adapter and the disk drive apparatus of the present invention can provide a large number of identification marks that can identify the type of disk while varying the reflection angle and the amount of reflected light provided in the adapter. Even with a simple structure detected by a photodetector, there is an advantage in that the type of disc can be sufficiently identified.

It is to be understood that the invention is not limited to that described above and illustrated in the drawings and that many more modifications and variations are possible within the scope of the following claims.

Claims (16)

delete An adapter body; A holder supporting the disk and coupled to the adapter body; A reflection part provided in the adapter main body and configured to reflect the incident light with a pair of photodetectors so that the type of the disc can be identified according to the reflected light; The reflecting unit, the disk housing adapter characterized in that the difference in the reflected light detected by the pair of photodetectors, respectively, by forming a different reflection angle for the incident light according to the type of the disk. delete delete delete delete delete delete delete delete delete delete delete A recording and reproducing unit for recording and reproducing information on a disc stored in the adapter; A photodetector for irradiating light to a reflector provided in the adapter and detecting light reflected from the reflector to identify a type of disc; The photodetector includes a light emitting LED and a photodetector for receiving light. The light receiving photodetector is a disk drive device, characterized in that at least one pair is disposed symmetrically on both sides with respect to the LED. delete A disk accommodating adapter equipped with a disk type identification reflector, and a photodetector provided in the disk drive device for irradiating light to the reflector and detecting the reflected light through a differential amplifier to identify a disk type. Doing; Irradiating light to the reflector with the photodetector and converting the light reflected therefrom into an output value through the differential amplifier; And determining a disc type in the adapter from the converted output value.

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