CN112951282A - Method for controlling movement of optical disk slot position - Google Patents
Method for controlling movement of optical disk slot position Download PDFInfo
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- CN112951282A CN112951282A CN202110103739.5A CN202110103739A CN112951282A CN 112951282 A CN112951282 A CN 112951282A CN 202110103739 A CN202110103739 A CN 202110103739A CN 112951282 A CN112951282 A CN 112951282A
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- optical disc
- slot position
- bit
- moving
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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
- G11B33/0461—Disc storage racks
Abstract
The invention discloses a method for controlling the movement of a slot position of an optical disk, which belongs to the technical field of optical disk storage and comprises the following steps: driving the CD slot to move at a set speed; detecting the time required by moving one bit of the CD slot position; step S2 is executed for several times, and the time average value required by the movement of one bit of the optical disc slot position is calculated; carrying out redundancy processing on the time average value to obtain a time interval of moving the optical disc slot position by one bit, wherein the time interval is an open interval; confirming the current slot position and the target position of the optical disc slot position; when the CD slot position moves from the current slot position to the target position, the time t of moving one bit of the CD slot position is detected1Will t1And after comparing with the time interval, controlling the optical disc slot position to move to the target position according to a preset method. The invention can accurately control the movement of the CD slot position.
Description
Technical Field
The invention relates to the technical field of optical disc storage, in particular to a method for controlling the movement of an optical disc slot position.
Background
The optical disc storage system is a storage device or system based on an optical disc or an optical disc cartridge, and comprises one or more optical drives, a plurality of optical disc slots and a manipulator, and can automatically realize the grabbing and loading of the optical disc or the optical disc cartridge and the networking device for reading and writing the optical disc.
The optical disc storage system comprises an optical disc slot, wherein the optical disc slot comprises a plurality of slot positions distributed at equal intervals, and each slot position can be used for placing an optical disc. In the use process of the optical disc storage system, an optical disc on the designated slot position often needs to be placed into the designated optical disc drive, or an optical disc in a certain optical disc drive needs to be placed back to the designated slot position, so that the storage and reading of data are realized. In this process, it is necessary to ensure that the designated slot position can be accurately moved to the designated position, and the manipulator can place the optical disc at the designated position into the designated optical disc drive or place the optical disc in a certain optical disc drive back to the designated position.
The movement of the disc slot is generally controlled by a disc slot movement control method. The following methods are generally adopted in the prior art:
the method comprises the following steps: controlling a motor to enable an optical disc slot to move at a constant speed, calculating a distance difference between the current position and the target position of the optical disc slot, dividing the distance difference by the constant speed to obtain moving time, directly controlling the optical disc slot to move at the constant speed and keeping the moving time long, and moving the slot position to the target position;
the second method comprises the following steps: detecting the slot position through a sensor; and controlling a motor to drive the optical disk slot to move, obtaining a digit difference according to the current slot position and the target slot position of the optical disk slot, detecting the moving position of the slot position through a sensor, and indicating that the slot position moves to the target slot position when the moving digit is equal to the digit difference.
In the first method, since it is difficult to control the optical disc slot to move at an absolutely uniform speed, it is inevitable that an accumulated error is generated as the device operates for a long time, resulting in an operation error; in the second method, at least one motor is arranged in the optical disc storage system, and the motor can generate electromagnetic interference to influence the precision of the sensor, so that deviation occurs in the slot position movement.
Therefore, a method for controlling the movement of the optical disc slot is needed to solve the above problems.
Disclosure of Invention
The present invention provides a method for controlling the movement of a slot position of an optical disc, so as to solve the technical problem of error existing in the prior art when the slot position of the optical disc is controlled to move to a target slot position.
As the conception, the technical scheme adopted by the invention is as follows:
a method for controlling the movement of a slot position of an optical disc comprises the following steps:
s1, driving the CD slot to move at the set speed;
s2, detecting the time T needed by the disk slot position moving one bit;
s3, executing the step S2 for a plurality of times, and calculating to obtain the time average value t required by the movement of the CD slot position by one bit;
s4, carrying out redundancy processing on the time mean value t to obtain a time interval of moving the optical disc slot by one bit, wherein the time interval is an open interval;
s5, confirming the current slot position and the target position of the optical disc slot position;
s6, when the disk slot position is moved from the current slot position to the target position, detecting the time t of moving one bit of the disk slot position1Will t1And after comparing with the time interval, controlling the optical disc slot position to move to the target position according to a preset method.
Optionally, the left boundary value of the time interval is TminThe right boundary value of the time interval is TmaxIn the step S6, the preset method includes:
s60, calculating the number of bits of the optical disc slot to be moved from the current slot to the target position, wherein the value of the moving bit of the optical disc slot is N, and the initial value of N is zero;
s61, moving one bit of the disk slot position, detecting the time t of moving one bit of the disk slot position1；
S62, judgment t1Whether it is less than or equal to the left boundary value T of the time intervalminIf yes, the CD slot position continues moving one bit, and the time t of the CD slot position continuing moving one bit is detected2According to t2Updating t1And returns to perform the step S61; otherwise, go to step S63;
s63, updating the N value to a new value, and executing the step S64;
s64, judging whether the new value is equal to the required shift digit or not; if so, go to step S65; if not, go to step S66;
s65, detecting whether the optical disc slot position reaches the target position by the optical disc slot position sensor; if yes, the optical disc slot position is judged to be moved to the target position; if not, updating the position of the current slot position of the optical disc slot position, and returning to execute the step S60;
s66, judging whether the new value is less than the number of the bits needing to be moved; if yes, returning to execute the step S61; if not, the position of the current slot of the optical disc slot is updated, and the step S60 is returned to be executed.
Optionally, the step S63 includes:
judging the t1Whether it belongs to the time interval, if yes, updating the N value to a new value according to a first method, and executing the step S64; if not, the value of N is updated to a new value according to the second method, and the step S64 is performed.
Alternatively, in the step S4,
alternatively, in step S1, the driving motor is controlled to drive the disc slot to move at the set speed.
Optionally, the optical disc cage is disc-shaped, a plurality of the optical disc slot positions are arranged on the optical disc cage, and the plurality of the optical disc slot positions are radially distributed on the optical disc cage.
The invention provides a method for controlling the movement of a disk slot position, which controls the movement of the disk slot position by taking the movement time of the disk slot position as a parameter, avoids the movement error caused by taking the movement speed of the disk slot position as a reference, also avoids the error caused by electromagnetic interference when a sensor is used for detecting the movement digit of the disk slot position to control the movement of the disk slot position, and can accurately control the movement of the disk slot position.
Drawings
Fig. 1 is a flowchart of a method for controlling movement of a slot position of an optical disc according to an embodiment of the present invention;
FIG. 2 is a flowchart of step S6 according to the second embodiment of the present invention
FIG. 3 is a schematic diagram of a disc cage according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a position of a disc slot where a disc is located in a disc cage according to a second embodiment of the present invention.
In the figure:
1. a disc cage.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1, the present embodiment provides a method for controlling the movement of a slot of an optical disc, including the following steps:
s1, driving the CD slot to move at the set speed;
s2, detecting the time T needed by the disk slot position moving one bit;
s3, executing step S2 for several times, and calculating to obtain the time average t needed by the movement of the CD slot position by one bit;
s4, carrying out redundancy processing on the time mean value t to obtain a time interval of moving the optical disc slot by one bit, wherein the time interval is an open interval;
s5, confirming the current slot position and the target position of the optical disc slot position;
s6, when the disk slot position is moved from the current slot position to the target position, the time t of moving one bit is detected1Will t1And after comparing with the time interval, controlling the optical disc slot position to move to the target position according to a preset method.
Example two
Referring to fig. 2 to 4, the present embodiment provides a method for controlling movement of optical disc slots, where an optical disc cage 1 is disc-shaped, a plurality of optical disc slots are arranged on the optical disc cage 1, and the optical disc slots are radially distributed on the optical disc cage 1. One of the plurality of CD slot positions is a designated slot position, the CD is placed on the designated slot position, and the designated slot position is controlled to move to a target position by adopting a CD slot position moving control method.
The method for controlling the movement of the slot position of the optical disc comprises the following steps:
s1, driving the CD slot to move at the set speed;
specifically, in step S1, the driving motor is controlled to drive the disc slot on the disc cage to move at a set speed. The designated slot position moves with the movement of the disc cage. Specifically, in this embodiment, the disc cage rotates around its axis to realize the movement of the disc slot.
S2, detecting the time T needed by the disk slot position moving one bit;
s3, executing step S2 for several times, and calculating to obtain the time average t needed by the movement of the CD slot position by one bit;
illustratively, in step S3, the number of times step S2 is executed is x, and the time required for the obtained disk slot to move one bit is T0、T1、T2……Tx-1: the time average value required for the optical disc slot to move by one bit
For example, the number of times of executing step S2 is 5, and the obtained time required for moving one bit of the disc slot is: t is0、T1、T2、T3、T4Mean time required for moving one bit of optical disk slot
S4, carrying out redundancy processing on the time mean value t to obtain a time interval of moving the optical disc slot by one bit, wherein the time interval is an open interval;
specifically, in step S4,
the time interval is (T)min，Tmax)。
S5, confirming the current slot position and the target position of the optical disc slot position;
specifically, in step S5, the disc slot where the disc is located is the designated slot.
Illustratively, referring to fig. 4, the disc cage 1 has a total of 7 disc slots, the designated slot is the slot numbered 1, and the destination position is illustratively the position of the disc slot numbered 3. Then the optical disc cage moves two bits in the counterclockwise direction to reach the destination position.
S6, the optical disc slot position is from the current slot position to the destinationWhen the position is moved, the time t of moving one bit of the CD slot position is detected1Will t1And after comparing with the time interval, controlling the optical disc slot position to move to the target position according to a preset method.
Further, the left boundary value of the time interval is TminThe right boundary value of the time interval is TmaxIn step S6, the preset method includes:
s60, calculating the required moving digit of the optical disk slot position from the current slot position to the target position, wherein the moving digit value of the optical disk slot position is N, and the initial value of N is zero;
specifically, in step S60, when the disc slot moves from the current slot to the destination position and two paths can be used for forward movement, the required number of bits to move of the two paths is compared, and the path with the smaller required number of bits to move of the two paths is selected.
For example, in fig. 4, there are 7 disc slots on the disc cage 1 in total, the designated slot is the slot numbered 1, and the destination position is the position of the disc slot numbered 3, at this time, the disc cage moves two bits counterclockwise to reach the destination position, and the disc cage moves five bits counterclockwise and clockwise to reach the destination position; at this time, a path is selected in which the optical disc cage moves two bits in the counterclockwise direction.
S61, moving one bit of CD slot position, detecting the time t of moving one bit of CD slot position1；
S62, judgment t1Whether it is less than or equal to the left boundary value T of the time intervalminIf yes, the disk slot position continues moving one bit, and the time t of the disk slot position continuing moving one bit is detected2According to t2Updating t1And returns to perform step S61; otherwise, go to step S63;
specifically, in step S62, if t is1Less than or equal to the left boundary value T of the time intervalminIf the disk slot position is not actually moved by one, the disk slot position is required to be moved continuously to further judge whether the disk slot position is moved forward by one. Specifically, if t in step S621Less than or equal to the left boundary of the time intervalValue TminThen t will be1And t2The value of the sum is given t1Thereafter, the process returns to step S61. The movement time is accumulated, the displacement number of the optical disk slot is subjected to fault tolerance, and the reliability of the movement control of the optical disk slot is obviously improved.
S63, updating the N value to a new value, and executing the step S64;
specifically, step S63 includes: judging t1Whether the time interval belongs to, if yes, updating the N value to a new value according to a first method, and executing the step S64; if not, the value of N is updated to a new value according to the second method and step S64 is performed.
Further, in step S63, if t is the case1And if the current time interval belongs to, considering that the optical disk slot actually moves forward by one bit, updating the N value to a new value according to a first method, specifically, the first method is that the N value is increased by 1, namely the new value is a number after the N value is increased by 1.
Further, in step S63, if t is1If the time interval is not included, t is indicated at the moment1The right boundary value greater than the time interval is TmaxAnd considering the forward walking digits of the optical disk slot at this time as:
at this time, the N value is updated to a new value according to the second method, and step S64 is performed. Specifically, the second method is: will be provided with
Is given a value of N, i.e. the new value is
In this embodiment, "is]"means the function of rounding off,
presentation pair
And (6) carrying out rounding.
S64, judging whether the new value is equal to the required shift digit; if so, go to step S65; if not, go to step S66;
s65, detecting whether the CD slot position reaches the target position by the CD slot position sensor; if yes, then judging that the optical disk slot position is moved to the destination position, if not, then updating the position of the current slot position of the optical disk slot position, and returning to execute the step S60;
specifically, in step S65, if the optical disc slot position sensor detects that the optical disc slot position reaches the destination position, it is determined that the optical disc slot position moves to the destination position; otherwise, it indicates that the disc slot has not reached the destination position, at this time, the position of the current slot of the disc slot is updated, and the step S60 is executed again.
S66, judging whether the new value is less than the required moving digit; if yes, go back to step S61; if not, the position of the current slot of the disc slot is updated, and the process returns to step S60.
Specifically, in step S66, if the new value is less than the required number of bits to be moved, it indicates that the disk slot has not reached the destination position, and the process returns to step S61, and the disk slot continues to move; otherwise, the new value is larger than the required moving digit, the disc slot position is moved beyond the target position, at this time, the current slot position of the disc slot position is updated, and the step S60 is executed.
Specifically, in steps S65 and S66, when the position of the current slot of the disc slot needs to be updated, the position of the current slot of the disc slot is detected, and then the position of the current slot of the disc slot is updated according to the position of the current slot of the disc slot. That is, when the position of the current slot position of the optical disc slot position needs to be updated, the position of the current slot position of the optical disc slot position is detected first, and at this time, the position of the current slot position of the optical disc slot position is the position of the current slot position of the optical disc slot position.
Specifically, among all the disc slots of the disc cage, the destination positions are only three: an optical disk inlet slot position, an optical disk outlet slot position and an optical disk drive slot position. The optical disc slot position to be controlled to move is the designated slot position. The appointed slot position is controlled to move to the target position by adopting the control method for controlling the movement of the slot position of the optical disc.
The CD slot position sensor is installed in the CD inlet slot position, the CD outlet slot position and the CD driver slot position separately, and when the new value is equal to the required moving digit, the CD slot position sensor detects the CD slot position with CD, the CD slot position is moved to the destination position.
In this embodiment, whether the slot position of the optical disc moves forward by one bit is determined according to the time; if the time of the forward movement of the CD slot position by one bit belongs to the time interval, judging that the CD slot position moves forward by one bit; if the time of the forward movement of the CD slot position by one bit is less than the left boundary point of the time interval, judging that the forward movement of the CD slot position is less than one bit and needing to continue to move forwards; if the time of the forward movement of the slot position of the optical disc is longer than the right boundary point of the time interval, the moving position of the slot position of the optical disc may exceed one bit.
The time is used to judge whether the CD slot moves forward by one bit, so as to fault-tolerant the displacement of the CD slot and raise the reliability of the control of the movement of the CD slot.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A method for controlling the movement of a slot position of an optical disc, comprising the steps of:
s1, driving the CD slot to move at the set speed;
s2, detecting the time T needed by the disk slot position moving one bit;
s3, executing the step S2 for a plurality of times, and calculating to obtain the time average value t required by the movement of the CD slot position by one bit;
s4, carrying out redundancy processing on the time mean value t to obtain a time interval of moving the optical disc slot by one bit, wherein the time interval is an open interval;
s5, confirming the current slot position and the target position of the optical disc slot position;
s6, when the disk slot position is moved from the current slot position to the target position, detecting the time t of moving one bit of the disk slot position1Will t1And after comparing with the time interval, controlling the optical disc slot position to move to the target position according to a preset method.
2. The method of claim 1 wherein the left boundary value of the time interval is TminThe right boundary value of the time interval is TmaxIn the step S6, the preset method includes:
s60, calculating the number of bits of the optical disc slot to be moved from the current slot to the target position, wherein the value of the moving bit of the optical disc slot is N, and the initial value of N is zero;
s61, moving one bit of the disk slot position, detecting the time t of moving one bit of the disk slot position1；
S62, judgment t1Whether it is less than or equal to the left boundary value T of the time intervalminIf yes, the CD slot position continues moving one bit, and the time t of the CD slot position continuing moving one bit is detected2According to t2Updating t1And returns to perform the step S61; otherwise, go to step S63;
s63, updating the N value to a new value, and executing the step S64;
s64, judging whether the new value is equal to the required shift digit or not; if so, go to step S65; if not, go to step S66;
s65, detecting whether the optical disc slot position reaches the target position by the optical disc slot position sensor; if yes, the optical disc slot position is judged to be moved to the target position; if not, updating the position of the current slot position of the optical disc slot position, and returning to execute the step S60;
s66, judging whether the new value is less than the number of the bits needing to be moved; if yes, returning to execute the step S61; if not, the position of the current slot of the optical disc slot is updated, and the step S60 is returned to be executed.
3. The optical disc slot movement control method as set forth in claim 2, wherein the step S63 includes:
judging the t1Whether it belongs to the time interval, if yes, updating the N value to a new value according to a first method, and executing the step S64; if not, the value of N is updated to a new value according to the second method, and the step S64 is performed.
4. The optical disc slot movement control method as set forth in claim 2, wherein in the step S4,
5. the optical disc slot movement control method as set forth in claim 1 wherein in the step S1, a drive motor is controlled to drive the optical disc slot movement at the set speed.
6. The method for controlling movement of a disk slot according to claim 5, wherein a disk cage (1) is shaped like a disk, and a plurality of the disk slots are provided in the disk cage (1) and radially distributed in the disk cage (1).
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