CN111899771B - Optical disk push storage method and device - Google Patents
Optical disk push storage method and device Download PDFInfo
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- CN111899771B CN111899771B CN201910652655.XA CN201910652655A CN111899771B CN 111899771 B CN111899771 B CN 111899771B CN 201910652655 A CN201910652655 A CN 201910652655A CN 111899771 B CN111899771 B CN 111899771B
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/04—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers
- G11B33/0405—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers for storing discs
- G11B33/0433—Multiple disc containers
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Abstract
The invention relates to a method and a device for pushing and storing an optical disk, which are used for controlling the optical disk to reciprocate between a storage station and a working station. The method specifically comprises the following steps: a force is applied to the vertically positioned optical disc to move the optical disc from the storage station to the working station, wherein the optical disc rises from a lower level to an upper level, and the optical disc descends from the upper level to the lower level during the movement from the working station to the storage station. The invention can make the CD not easy to be thrown out of the CD groove by the action of centrifugal force when the turntable rotates through the height difference of the horizontal plane.
Description
Technical Field
The present invention relates to the field of optical storage device technologies, and in particular, to a method and an apparatus for pushing and storing an optical disc.
Background
With the further development of the digitization industry, the utilization rate of data storage devices is gradually increased. Optical storage, which is capable of storing data safely, at low cost, for long periods of time, is becoming increasingly popular. Compared with the expensive price, complex maintenance and high environmental requirement of hard disk storage, the cost of using optical disk storage is lower, and the stored data is safer and more stable. Because the optical disk storage does not need to rotate continuously like a hard disk, the energy consumption is lower, and because the structure of the optical disk determines that the optical disk has longer service life than the hard disk, the optical disk can be used for 50 years or even longer, and does not need to be replaced frequently. With the development of error correction technology, the reliability of data stored in the optical disc is greatly improved. Because the data stored in the optical disc is recorded on the metal film of the disc by the purely physical metal ablation technology, the process is irreversible, so that the data cannot be tampered, and the stability of the data is ensured on the physical level. The hard disk and the magnetic tape become fragile if they are exposed to water or in a humid environment, and the optical disk is not affected by these influences, and data can be normally read even in an office environment at a temperature higher than 35 ℃.
Optical storage, which has such many advantages, is increasingly used in storage. Among the optical storage devices, there is a circular turntable type optical storage device, which has been gradually popularized in the field of optical storage due to its high storage density, small volume and low manual intervention. The existing optimization of the disk round rotating disk type disk box of the optical disk is mostly directed at the optical disk slot, and mainly solves the problem of how to stably store the optical disk in the optical disk slot, but never considers how to ensure the stability of the optical disk in motion in the process of the optical disk entering and exiting the optical disk slot. The round turntable type disc box of the optical disc always has the problem that the optical disc does not smoothly move and is not smooth, the groove bottom of an optical disc groove in the traditional disc box is mostly in a structure with the radian similar to that of the excircle of the optical disc, the smooth movement of the optical disc can be ensured by the structure, and under the action of no external force, the circular arc at the groove bottom of the optical disc groove can be tightly attached to the static state due to the inertia of dead weight so as to be positioned at the lowest part of the circular arc, but when the turntable rotates, the optical disc vertically jumps or shakes left and right, so that the probability of collision between the optical disc and an optical drive is increased undoubtedly. In addition, in order to slide the optical disc out of the optical disc drive smoothly, one end of the disc cartridge is necessarily opened, and when the base rotates, the optical disc is easily thrown out of the optical disc slot due to the action of centrifugal force. Once the disc collides or is thrown out of the disc slot, the disc is inevitably damaged in an untwisting way, resulting in data disaster and immeasurable loss.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method and an apparatus for pushing and storing an optical disc, so that the movement of the optical disc is smoother, more stable and safer.
The technical scheme adopted by the invention is as follows:
a method for pushing and storing optical discs, which is used for controlling the optical discs to reciprocate between a storage station and a working station, comprises the following steps: a force is applied to the vertically positioned optical disc to move the optical disc from the storage station to the working station, wherein the optical disc rises from a lower level to an upper level, and the optical disc descends from the upper level to the lower level during the movement from the working station to the storage station.
The process of the optical disk reciprocating between the storage station and the working station, namely the process of the optical disk reciprocating between the low level and the high level, can lead the optical disk to stop at the storage station more stably because of the height difference of the two levels.
Further, the CD is vertical annular and is stored on the annular storage device, the circle center of the plane where the CD is located points to the storage device, the pushing device is arranged at the circle center of the storage device, and the pushing process is as follows: the pushing device applies pushing force to a certain optical disc from the center of the circle along the radial direction to enable the optical disc to enter the optical drive along the radial direction; the storage process is as follows: after the optical disk is read or recorded by the optical disk drive, ejecting the optical disk to enable the optical disk to slide towards the circle center and returning to the storage device; the process of the optical disk to and from the storage device and the optical drive is provided with a first horizontal plane and a second horizontal plane, the optical disk is positioned on the first horizontal plane when being stored on the storage device, the optical disk is positioned on the second horizontal plane when being in and out of the optical drive, and the second horizontal plane is higher than the first horizontal plane.
Specifically, the storage device corresponds to a storage station for storing an optical disc that is not temporarily used, the optical disc drive corresponds to a working station for reading data from the optical disc or writing data into the optical disc, the first horizontal plane corresponds to the low horizontal plane, the second horizontal plane corresponds to the high horizontal plane, and the difference in height between the first horizontal plane and the high horizontal plane causes the optical disc to be more stably stopped in the storage device.
Further, the process of the optical disc moving to and from the storage device and the optical disc drive includes a process of the optical disc floating from the first horizontal plane to the second horizontal plane under the pushing force, and a process of the optical disc sliding from the second horizontal plane to the first horizontal plane under the inertia.
The second level is higher than the first level for speeding up the moving process of the optical disc from the optical drive back to the storage device, reducing the mechanical response time and making the switching of the optical disc faster.
Further, a third horizontal plane is further arranged between the first horizontal plane and the second horizontal plane, step transition is adopted between the first horizontal plane and the third horizontal plane, slope transition is adopted between the second horizontal plane and the third horizontal plane, and the pushing process is as follows: the pushing device applies pushing force to the optical disc to enable the optical disc to overcome the resistance of the step and ascend from the first horizontal plane to the third horizontal plane, and the pushing device continuously applies pushing force to the optical disc to enable the optical disc to roll from the third horizontal plane to the second horizontal plane along the inclined plane.
The step structure between the first horizontal plane and the third horizontal plane generates larger resistance, so that the optical disk cannot collide in the storage device when the turntable rotates, and is further stably stored in the storage device. The inclined transition structure between the second horizontal plane and the third horizontal plane acts on the movement process of the optical disk returning from the optical disk drive to the storage device, so that the movement process is smoother.
Further, the storage device comprises an inclined surface transition outer ring area from the second horizontal surface to the third horizontal surface and an arc-shaped storage inner ring area from the third horizontal surface to the inner side of the circular ring; the first horizontal plane is located at the lowest point of the arc-shaped inner storage ring area, and a buffer structure is arranged on one side of the arc-shaped inner storage ring area, which faces the circle center; when the optical disk is positioned at the first horizontal plane, the optical disk is simultaneously contacted with the step and the buffer structure.
The buffer structure is used for absorbing the impact force generated when the optical disk slides from a high level to a low level, the step is used for stabilizing the optical disk to be stored in the storage device, and when the optical disk is simultaneously contacted with the buffer structure and the step, the buffer structure and the step are used for providing support for the storage of the optical disk.
Furthermore, the storage device is in a circular ring shape and is provided with an inner side and an outer side, a plurality of optical disc vertical storage grooves are radially distributed along the storage device, the storage grooves point to the circle center of the storage device, the pushing device is arranged at the circle center of the storage device, the bottom of each storage groove is provided with a first horizontal plane and a second horizontal plane, the first horizontal plane is located on the inner side of the second horizontal plane, and the second horizontal plane is higher than the first horizontal plane.
Further, a third horizontal plane is arranged between the first horizontal plane and the second horizontal plane, step transition is adopted between the first horizontal plane and the third horizontal plane, and slope transition is adopted between the second horizontal plane and the third horizontal plane.
Only when the optical disk is continuously exerted with the pushing force, the optical disk can rise from the first horizontal plane to the third horizontal plane and then roll from the third horizontal plane to the second horizontal plane, and the step can enable the optical disk to be still in the storage device under the condition of insufficient pushing force, so that the influence of centrifugal force during circular motion of the storage device is overcome; the inclined plane is arranged between the third horizontal plane and the second horizontal plane, so that the movement process of the optical disk from the second horizontal plane to the first horizontal plane is accelerated, and the optical disk can fall to a storage position and reach a static state more quickly.
Further, the storage device comprises an inclined surface transition outer ring area from the second horizontal surface to the third horizontal surface and an arc-shaped storage inner ring area from the third horizontal surface to the inner side of the circular ring; the first horizontal plane is located at the lowest point of the arc-shaped storage inner ring area, the inner side of the arc-shaped storage inner ring area is provided with a buffer structure, and the cambered surface of the arc-shaped storage inner ring area connecting the buffer structure and the lowest point is matched with the outer contour of the optical disk.
Further, the central angle of the connecting buffer structure corresponding to the cambered surface of the cambered storage inner ring area at the lowest point is 45-85 degrees.
The cambered surface of the arc-shaped storage inner ring area connecting the buffer structure and the lowest point is used for providing support when the optical disk is stored, and the best support performance can be achieved only when the corresponding central angle is 45-85 degrees.
Further, the height difference between the first horizontal plane and the third horizontal plane is 1-5 mm, and the height difference between the second horizontal plane and the third horizontal plane is 3-8 mm.
When the height difference between the first horizontal plane and the third horizontal plane is 1-5 mm, the resistance generated by the height difference between the two horizontal planes does not prevent the optical disc from entering the optical drive from the storage device, and the optical disc is not thrown out of the optical disc slot by centrifugal force due to too small resistance. When the height difference between the second horizontal plane and the third horizontal plane is 3-8 mm, on one hand, the process of returning the optical disk from the optical disk drive to the storage device can be accelerated, and on the other hand, too large impact force cannot be generated, so that the buffer structure cannot absorb the optical disk and the optical disk is damaged.
Compared with the prior art, the invention has the beneficial effects that:
(1) the step structure is arranged at the bottom of the optical disk slot, so that the optical disk can overcome the centrifugal force generated in the rotating process of the storage device, and the optical disk is ensured not to be thrown out when moving along with the storage device in a circular manner.
(2) When the optical disk returns to the storage device from the optical disk drive, the height difference of the disk slot and the inclined plane structure of the outer ring area accelerate the movement process of returning the optical disk from the optical disk drive to the storage device, so that the mechanical response time is reduced, and the switching of the optical disk becomes faster.
(3) The buffer structure prevents the optical disk from physical damage caused by impact, jolt and vibration generated by movement in the process of reciprocating the optical disk drive and the storage device, and better protects the optical disk.
(4) The positions and structures of the buffer structure, the step structure and the contour of the arc-shaped storage inner ring area all provide excellent supporting performance for a device for storing the optical disc, so that the optical disc is more stable when being stored in the device.
Drawings
FIG. 1 is a top view of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the apparatus of the present invention;
FIG. 3 is a cross-sectional view A of a storage device of the present invention;
fig. 4 is a cross-sectional view B of the memory device of the present invention.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention.
For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Examples
The present embodiment provides a method and an apparatus for pushing and storing an optical disc, which are used to control the optical disc to reciprocate between a storage station and a work station, and fig. 1 is a top view of the apparatus of the present invention, based on the apparatus, the method includes: a force is applied to the vertically positioned optical disc to move it from the storage station 1 to the working station 2, during which the optical disc rises from a low level to a high level, and during the movement of the optical disc from the working station 2 to the storage station 1, it falls from said high level to the low level.
The process of the optical disc to and fro between the storage station 1 and the working station 2, namely the process of the optical disc to and fro between the low level and the high level, can lead the optical disc to be stopped at the storage station 1 more stably and also lead the optical disc to move at the storage station 1 and the working station 2 more stably and quickly because of the height difference between the two levels.
Further, fig. 2 is a schematic structural diagram of the apparatus of the present invention, as shown in fig. 2, the optical disc 3 is stored on the circular storage device 11 in a vertical ring shape, a plane where the optical disc 3 is located points to a circle center 4 of the storage device 11, the pushing device 5 is arranged at the circle center 4 of the storage device, and the pushing process is as follows: the pushing device 5 applies a pushing force to a certain optical disc 3 along the radial direction from the circle center 4, so that the optical disc 3 enters the optical drive 6 along the radial direction; the storage process is as follows: after the optical disk 3 is read or recorded by the optical disk drive 6, ejecting the optical disk 3 to enable the optical disk 3 to slide towards the circle center 4 and return to the storage device 11; the process of the optical disc 3 moving to and from the storage device 11 and the optical disc drive 6 has a first and a second horizontal plane, fig. 3 is a cross-sectional view a of the storage device of the present invention, as shown in fig. 3, the optical disc 3 is located at the first horizontal plane 7 when stored on the storage device 11, the optical disc 3 is located at the second horizontal plane 9 when moving in and out of the optical disc drive 6, and the second horizontal plane 9 is higher than the first horizontal plane 7.
The equipment to be adopted for realizing the pushing and storing method is specifically as follows: the device comprises a storage device 11, a pushing device 5 and an optical drive 6, wherein the storage device 11 corresponds to a storage station 1, the pushing device 5 is responsible for applying acting force, and the optical drive 6 corresponds to a working station 2. The pushing and storing method specifically comprises the following steps: the optical disc 3 enters the optical disc drive 6 from the storage device 11 under the action force exerted by the pushing device 5 and returns to the storage device 11 from the optical disc drive 6 under the action force exerted by the optical disc drive 6 for storage after the optical disc drive 6 reads or records. And there is a height difference between the storage device 11 and the optical drive 6, and the height near the storage device 11 is lower than that of the optical drive 6.
Further, the process of moving the optical disc 3 to and from the storage device 11 and the optical disc drive 6 includes a process of floating the optical disc 3 from the first horizontal plane 7 to the second horizontal plane 9 under the pushing force, and a process of sliding the optical disc 3 from the second horizontal plane 9 to the first horizontal plane 7 under the inertia.
When the optical disc 3 floats from the first horizontal plane 7 to the second horizontal plane 9, and then slides from the second horizontal plane 9 to the first horizontal plane 7, the process of sliding the optical disc 3 from the second horizontal plane 9 to the first horizontal plane 7 is accelerated due to the height difference between the first horizontal plane 7 and the second horizontal plane 9, the response time of the machine is reduced, and the switching of the optical disc is faster.
Further, 9 between the first horizontal plane 7 and the second horizontal plane, still have a third horizontal plane 8, for step 15 transition between first horizontal plane 7 and the third horizontal plane 8, for the inclined plane transition between second horizontal plane 9 and the third horizontal plane 8, the propelling movement process is: the pushing device 5 applies a pushing force to the optical disc 3 to make the optical disc 3 rise from the first horizontal plane 7 to the third horizontal plane 8 against the resistance of the step 15, and the pushing device 5 continuously applies the pushing force to the optical disc 3 to make the optical disc 3 roll from the third horizontal plane 8 to the second horizontal plane 9 along the inclined plane.
Only when the optical disc 3 is continuously applied with the pushing force, the optical disc 3 can rise from the first horizontal plane 7 to the third horizontal plane 8 and then roll from the third horizontal plane 8 to the second horizontal plane 9, and the step 15 can enable the optical disc 3 to be still inside the storage device 11 under the condition of insufficient pushing force, so that the influence of centrifugal force during circular motion of the storage device 11 is overcome; the inclined surface is arranged between the third horizontal surface 8 and the second horizontal surface 9, so that the movement process of the optical disk 3 from the second horizontal surface 9 to the first horizontal surface 7 is accelerated, and the optical disk 3 can fall to a storage position and reach a static state more quickly.
Further, fig. 4 is a cross-sectional view B of the storage device of the present invention, as shown in fig. 4, the storage device 11 includes an inclined transition outer ring area 12 from the second horizontal plane 9 to the third horizontal plane 8 and an arc-shaped storage inner ring area 13 from the third horizontal plane 8 to the inner side of the ring; the first horizontal plane 7 is located at the lowest point 14 of the arc-shaped inner storage ring area, and a buffer structure 16 is arranged on one side of the arc-shaped inner storage ring area 13, which faces the circle center 4; the optical disc 3 is in simultaneous contact with the step 15 and the buffer structure when the optical disc 3 is located at the first level 7.
When the optical disc 3 is located in the outer ring area 12, the slope structure of the outer ring area 12 accelerates the movement process of the optical disc 3 from the optical disc drive 6 to the storage device 11, and when the optical disc 3 is located in the inner ring area 13, the arc structure of the inner ring area 13 provides a good support for the optical disc 3 when stored in the storage device, and provides a support function for the optical disc 3, and further provides a step 15 and a buffer structure 16.
Further, the storage device 11 is in a circular ring shape and is provided with an inner side 18 and an outer side 17, a plurality of vertical storage grooves of the optical disc 3 are radially distributed along the storage device 11, the storage grooves point to the circle center 4 of the storage device 11, the pushing device is arranged 5 at the circle center 4 of the storage device 11, the bottom of each storage groove is provided with a first horizontal plane 7 and a second horizontal plane 9, the first horizontal plane 7 is located on the inner side 18 of the second horizontal plane 9, and the second horizontal plane 9 is higher than the first horizontal plane 7.
The level of the inner side is higher than the level of the outer side, which is advantageous in that the centrifugal force generated when the storage device 11 performs a circular motion can be overcome, so that the optical disc 3 can be better stored in the storage device 11.
Further, a third horizontal plane 8 is further arranged between the first horizontal plane 7 and the second horizontal plane 9, step transition is adopted between the first horizontal plane 7 and the third horizontal plane 8, and slope transition is adopted between the second horizontal plane 9 and the third horizontal plane 8.
Further, the storage device 11 comprises an inclined transition outer ring area 12 from the second horizontal plane 9 to the third horizontal plane 8 and an arc storage inner ring area 13 from the third horizontal plane 8 to the inner side 18 of the circular ring; the first horizontal plane 7 is located at the lowest point 14 of the arc-shaped storage inner ring area 13, a buffer structure 16 is arranged on the inner side of the arc-shaped storage inner ring area 13, and the cambered surface of the arc-shaped storage inner ring area 13 connecting the buffer structure 16 and the lowest point 14 is matched with the outer contour of the optical disc.
The cambered surface of the arc-shaped storage inner ring area 13 connecting the buffer structure 16 and the lowest point 14 is matched with the outer contour of the optical disk, so that the optical disk 3 is better adapted, and the optical disk 3 is more stably stored in the storage inner ring area.
Further, the central angle 19 of the connecting bumper 16 to the arc of the arc-shaped storage inner ring area 13 of the lowest point 14 is 45-85 deg..
The best support performance can be achieved only if the central angle 19 of the arc-shaped storage inner ring area 13 connecting the buffer structure 16 and the lowest point 14 corresponds to 45-85 degrees.
Further, the height difference between the first horizontal plane 7 and the third horizontal plane 8 is 1-5 mm, and the height difference between the second horizontal plane 9 and the third horizontal plane 8 is 3-8 mm.
Only the height difference between the first horizontal plane 7 and the third horizontal plane 8 is 1-5 mm, and the height difference between the second horizontal plane 9 and the third horizontal plane 8 is 3-8 mm; the first horizontal plane 7 and the third horizontal plane can generate the most appropriate resistance, so that the centrifugal force caused by the circular motion of the storage device 11 cannot be overcome, and the optical disc 3 cannot be pushed, and the second horizontal plane 9 and the third horizontal plane 8 enable the optical disc 3 to reach the storage position more quickly when the optical disc 3 returns to the storage device 11, and too large impact force cannot be generated, so that the buffer structure cannot absorb the optical disc 3, and the optical disc 3 is damaged.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (9)
1. A method for pushing and storing optical disks is used for controlling the optical disks to reciprocate between a storage station and a working station, and is characterized in that an acting force is applied to the optical disks which are vertically placed, so that the optical disks are moved from the storage station to the working station, in the process, the optical disks rise from a low level to a high level, and in the process that the optical disks are moved from the working station to the storage station, the optical disks fall from the high level to the low level; the optical disk is stored on the annular storage device in a vertical annular manner, and the plane where the optical disk is located points to the center of the circle of the storage device; the storage device is provided with an inner side and an outer side, a plurality of optical disk vertical storage grooves are distributed along the radial direction of the storage device, the pushing device is arranged at the center of a circle of the storage device, and the optical drive is arranged at the outer side of the storage device; the storage tank points to the center of a circle of the storage device, the bottom of the storage tank is provided with a first horizontal plane and a second horizontal plane, the first horizontal plane is positioned on the inner side of the second horizontal plane, and the second horizontal plane is higher than the first horizontal plane; the pushing process comprises the following steps: the pushing device applies pushing force to a certain optical disc from the center of the circle along the radial direction to enable the optical disc to enter the optical drive along the radial direction; the storage process is as follows: after the optical disk is read or recorded by the optical disk drive, ejecting the optical disk to enable the optical disk to slide towards the circle center and returning to the storage device; the optical disc is located on a first horizontal plane when stored on the storage device, and is located on a second horizontal plane when entering and exiting the optical drive.
2. The method according to claim 1, wherein the process of moving the optical disc to and from the storage device and the optical disc drive comprises a process of floating the optical disc from a first horizontal plane to a second horizontal plane under the pushing force, and a process of sliding the optical disc from the second horizontal plane to the first horizontal plane under the inertia.
3. The method according to claim 1 or 2, wherein a third horizontal plane is arranged between the first horizontal plane and the second horizontal plane, a step transition is formed between the first horizontal plane and the third horizontal plane, a slope transition is formed between the second horizontal plane and the third horizontal plane, and the pushing process comprises the following steps: the pushing device applies pushing force to the optical disc to enable the optical disc to overcome the resistance of the step and ascend from the first horizontal plane to the third horizontal plane, and the pushing device continuously applies pushing force to the optical disc to enable the optical disc to roll from the third horizontal plane to the second horizontal plane along the inclined plane.
4. The method of claim 3, wherein the storage device comprises a sloped transition outer ring region from the second level to the third level and an arcuate storage inner ring region from the third level to an inner side of the ring; the first horizontal plane is located at the lowest point of the arc-shaped inner storage ring area, and a buffer structure is arranged on one side of the arc-shaped inner storage ring area, which faces the circle center; when the optical disk is positioned at the first horizontal plane, the optical disk is simultaneously contacted with the step and the buffer structure.
5. A storage device of a compact disc is in a ring shape and is provided with an inner side and an outer side, a plurality of compact disc vertical storage grooves are distributed along the radial direction of the storage device, the storage grooves point to the circle center of the storage device, and a pushing device is arranged at the circle center of the storage device; the bottom of the storage tank is provided with a first horizontal plane and a second horizontal plane, the first horizontal plane is positioned at the inner side of the second horizontal plane, and the second horizontal plane is higher than the first horizontal plane; the storage device is used for controlling the optical disk to reciprocate between the storage station and the working station, applying an acting force to the optical disk which is vertically placed to move the optical disk from the storage station to the working station, wherein the optical disk rises from a low level to a high level in the process, and falls from the high level to the low level in the process of moving the optical disk from the working station to the storage station; the pushing device is used for applying pushing force to a certain optical disc from the center of a circle along the radial direction to enable the optical disc to enter the optical drive along the radial direction; the optical disk drive is used for ejecting the optical disk to enable the optical disk to slide towards the circle center after the optical disk is read or recorded, and returning to the storage device; the optical disc is located on a first horizontal plane when stored on the storage device, and is located on a second horizontal plane when entering and exiting the optical drive.
6. The storage device of claim 5, further comprising a third level between the first level and the second level, wherein the first level and the third level have a step transition therebetween and the second level and the third level have a slope transition therebetween.
7. The storage device of claim 6, wherein the storage device comprises a sloped transition outer ring region from the second level to the third level and an arcuate storage inner ring region from the third level to an inner side of the ring; the first horizontal plane is located at the lowest point of the arc-shaped storage inner ring area, the inner side of the arc-shaped storage inner ring area is provided with a buffer structure, and the cambered surface of the arc-shaped storage inner ring area connecting the buffer structure and the lowest point is matched with the outer contour of the optical disk.
8. The storage device of claim 7, wherein the central angle of the connecting buffer structure corresponding to the arc of the arc-shaped storage inner ring region of the lowest point is 45 ° -85 °.
9. A storage device according to claim 6 or 7, wherein the difference in height between the first and third levels is 1-5 mm and the difference in height between the second and third levels is 3-8 mm.
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