Magnetic recording medium, positioning method and related device

Abstract

Provided in the present application are a magnetic recording medium, a positioning method, and a related device. The magnetic recording medium comprises a servo band and a positioning band, wherein the servo band is used for indicating longitudinal position information; and the positioning band is used for indicating physical position information, whch is used for indicating the real physical position of the longitudinal position information in the magnetic recording medium. In the magnetic recording medium, in addition to the existing servo band, a positioning band for indicating physical position information is additionally provided. The physical position information can indicate the real physical position of a certain point, and thus the position information of the magnetic recording medium at the logical level and the position information of the magnetic recording medium at the physical level are interconnected, facilitating physical-level processing on the magnetic recording medium by a user.

Description

Magnetic recording medium, positioning method and related device

[0001] The present application claims priority from the Chinese patent application No. 202411339482.3 filed on September 24, 2024, and entitled "Magnetic recording medium, positioning method and related device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of data storage, and in particular, to a magnetic recording medium, a positioning method of the magnetic recording medium, a positioning device of the magnetic recording medium, a magnetic recording drive, a storage device, a computer readable storage medium and a computer program product. BACKGROUND

[0003] With the continuous development of data storage technology, magnetic recording media are widely used in the storage of multimedia data, medical data, control data and other fields. The magnetic recording medium refers to a storage medium that records data using magnetic materials, for example, the magnetic recording medium can include magnetic tapes, magnetic disks, etc.

[0004] Generally, the magnetic recording medium includes a servo band, and the servo band is written with longitudinal position information (LPOS). LPOS is the position information of the magnetic recording medium at the logical level, for example, LPOS 5000 indicates that the data write point or the data read point is located at the first position of the 5th data block, and LPOS 5001 indicates that the data write point or the data read point is located at the second position of the 5th data block. During the access of the magnetic recording medium by the magnetic recording drive (such as a magnetic tape drive), the LPOS of the data write point or the data read point can be obtained through the servo band, so that the magnetic recording drive can be positioned during data writing or data reading.

[0005] However, it is difficult to determine the position information of a certain point in the magnetic recording medium at the physical level (i.e., the actual position of a certain point in the magnetic recording medium) using LPOS, and users have difficulty in performing physical-level processing on the magnetic recording medium. SUMMARY

[0006] The present application provides a magnetic recording medium that can bridge the position information of the magnetic recording medium at the logical level and the position information at the physical level. The present application also provides a positioning method, a positioning device, a magnetic recording drive, a storage device, a computer readable storage medium and a computer program product corresponding to the magnetic recording medium.

[0007] In a first aspect, the present application provides a magnetic recording medium, which comprises a servo band and a positioning band, wherein the servo band is used to indicate longitudinal position information, and the positioning band is used to indicate physical position information, and the physical position information is used to indicate the real physical position of the longitudinal position information on the magnetic recording medium.

[0008] In the magnetic recording medium, in addition to the original servo band, the positioning band used to indicate the physical position information is additionally added. Since the physical position information can indicate the real physical position of a certain point, the position information at the logical level and the position information at the physical level of the magnetic recording medium are connected, so as to facilitate the user to perform physical level processing on the magnetic recording medium.

[0009] In some possible implementation manners, the physical position information is longitudinal position information, or the physical position information has a mapping relationship with the longitudinal position information.

[0010] In the magnetic recording medium, the relationship between the physical position information and the longitudinal position information is established in different manners, so that the physical position and the logical position of the magnetic recording medium are associated, so as to realize physical level positioning.

[0011] In some possible implementation manners, the positioning band is characterized by a magnetic signal, or the positioning band is characterized by a dot mark.

[0012] In the magnetic recording medium, the positioning band in different forms can be formed by different write transducers, and diversified positioning band writing modes are provided, so that the positioning band written in the magnetic recording medium can be physically observed, so as to realize physical level positioning in combination with the magnetic signal or the dot mark of the positioning band.

[0013] In some possible implementation manners, the positioning band is located in a region associated with a fault point in the magnetic recording medium, and the fault point is a point with access error in the magnetic recording medium.

[0014] In the magnetic recording medium, it is not necessary to write the physical position information in the entire longitudinal range, and in the case of meeting the positioning requirement, processing resources are saved, excessive writing cost is avoided, and processing efficiency is improved.

[0015] In some possible implementation manners, the positioning band is located between the edge of the magnetic recording medium and the servo band outside, or the positioning band is located in the middle of any two data bands in the magnetic recording medium.

[0016] In the magnetic recording medium, the position of the positioning band is not limited, and the positioning band can be formed without affecting the original structure of the servo band, or the positioning band can be formed by fully utilizing the space of the magnetic recording medium.

[0017] In some possible implementation manners, the physical position information indicated by the positioning band is written by a data writing device, which is a write servo or a magnetic recording drive, wherein the write servo is used for producing the magnetic recording medium, and the magnetic recording drive is used for reading data and / or writing data.

[0018] In the magnetic recording medium, the physical position information can be written at different stages using different data writing devices. In the production stage of the magnetic recording medium, the physical position information is written by the write servo, and in the subsequent use process, the magnetic recording medium does not need to be additionally processed. In the use stage of the magnetic recording medium, the physical position information is written by the magnetic recording drive, which meets different use scenarios of the magnetic recording medium.

[0019] In a second aspect, the present application provides a positioning method of a magnetic recording medium, the method comprising:

[0020] When an access error is detected in accessing the magnetic recording medium:

[0021] According to the servo band on the magnetic recording medium, longitudinal position information of the access error is determined.

[0022] Based on the longitudinal position information of the access error, physical position information is determined, wherein the physical position information is used to indicate the real physical position of the longitudinal position information of the access error on the magnetic recording medium.

[0023] In some possible implementation manners, the physical position information is the longitudinal position information of the access error.

[0024] In some possible implementation manners, based on the longitudinal position information of the access error, the physical position information is determined, comprising:

[0025] According to a preset conversion rule, the longitudinal position information of the access error is converted into the physical position information.

[0026] In a third aspect, the present application provides a positioning device of a magnetic recording medium, the device comprising:

[0027] A determination module is configured to, when an access error is detected in accessing the magnetic recording medium: according to the servo band on the magnetic recording medium, determine longitudinal position information of the access error.

[0028] The determination module is further configured to, based on the longitudinal position information of the access error, determine physical position information, wherein the physical position information is used to indicate the real physical position of the longitudinal position information of the access error on the magnetic recording medium.

[0029] In some possible implementation manners, the physical position information is the longitudinal position information of the access error.

[0030] In some possible implementation manners, the determination module is specifically configured to:

[0031] According to a preset conversion rule, the longitudinal position information of the access error is converted into physical position information.

[0032] In a fourth aspect, the present application provides a magnetic recording drive. The magnetic recording drive comprises at least one processor and at least one memory. The at least one processor and the at least one memory are in communication with each other. The at least one processor is configured to execute instructions stored in the at least one memory, so that the magnetic recording drive performs the positioning method of the magnetic recording medium as described in the second aspect or any implementation manner of the second aspect.

[0033] In a fifth aspect, the present application provides a storage device. The storage device comprises a magnetic recording drive and a magnetic recording medium as described in the first aspect or any implementation manner of the first aspect.

[0034] In a sixth aspect, the present application provides a computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and the instructions instruct a magnetic recording drive to perform the positioning method of the magnetic recording medium as described in the second aspect or any implementation manner of the second aspect.

[0035] In a seventh aspect, the present application provides a computer program product comprising instructions, which, when executed on a magnetic recording drive, cause the magnetic recording drive to perform the positioning method of the magnetic recording medium as described in the second aspect or any implementation manner of the second aspect.

[0036] On the basis of the implementation manners of the aspects described above, the present application can be further combined to provide more implementation manners. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical method of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows.

[0038] FIG. 1 is a schematic diagram of a system architecture of a magnetic recording drive and a magnetic recording medium according to an embodiment of the present application;

[0039] FIG. 2 is a schematic diagram of a positioning process of a magnetic recording medium according to an embodiment of the present application;

[0040] FIGS. 3A to 3C are schematic diagrams of a magnetic head according to an embodiment of the present application;

[0041] FIGS. 4 and 5 are schematic diagrams of a magnetic recording medium according to an embodiment of the present application;

[0042] FIG. 6 is a schematic diagram of a structure of a write servo according to an embodiment of the present application;

[0043] FIG. 7 is a schematic diagram of a magnetic recording medium according to an embodiment of the present application;

[0044] FIG. 8 is a flowchart of a positioning method of a magnetic recording medium according to an embodiment of the present application;

[0045] FIG. 9 is a schematic diagram of a positioning device of a magnetic recording medium according to an embodiment of the present application;

[0046] FIG. 10 is a schematic diagram of a magnetic recording drive according to an embodiment of the present application. DETAILED DESCRIPTION

[0047] The terms "first", "second", etc. in the embodiments of the present application are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features.

[0048] First, some technical terms related to the present application are introduced.

[0049] The magnetic recording medium refers to a storage medium using a magnetic material for data recording. For example, the magnetic recording medium can include a magnetic tape, a magnetic disk, etc. The magnetic material can be a material such as metal, ferrite, magnetic particles, etc. that can react to a magnetic field.

[0050] In the magnetic recording medium, data is stored in the form of a magnetic state. In general, data can be stored in binary form, and different magnetization directions represent different data bits (i.e., 0 and 1). The magnetic recording medium has the advantages of non-volatility, reusability, high storage density, good durability, etc., and is widely used in data storage in many fields such as multimedia data, medical data, control data, etc.

[0051] The magnetic recording drive, which can also be referred to as a magnetic storage device, refers to a device using a magnetic recording medium as a storage medium. That is, the magnetic recording drive can write data into or read data from the magnetic recording medium. Different magnetic recording media correspond to different magnetic recording drives. For example, the magnetic recording drive can include a magnetic tape drive, a magnetic disk drive, etc.

[0052] In some examples, the magnetic recording drive and the magnetic recording medium can be integrated, the integrated magnetic recording drive and the magnetic recording medium can also be referred to as an automatic loading magnetic recording device, a magnetic recording medium library, etc., and the integrated magnetic recording drive and the magnetic recording medium can be sold as a whole. In the integrated magnetic recording drive and the magnetic recording medium, automatic replacement of multiple magnetic recording media is usually supported, in other words, the magnetic recording drive can perform continuous data writing or data reading on multiple magnetic recording media without the need for the user to manually replace the magnetic recording medium, meeting the storage and reading requirements of a large amount of data.

[0053] In other examples, the magnetic recording drive and the magnetic recording medium can also be independent, and the magnetic recording drive and the magnetic recording medium can be sold separately as products. The magnetic recording drive usually supports access to magnetic recording media of different types (such as different brands and different manufacturers), in other words, the user can use the same magnetic recording drive to write data or read data on different magnetic recording media, meeting the flexible storage and reading requirements.

[0054] The head is a key component in the magnetic recording drive, which is used for reading and writing data in the magnetic recording medium. Specifically, when writing data, the head generates a magnetic field to change the magnetization state of the magnetic material in the magnetic recording medium to form a data track in the magnetic recording medium. In a magnetic recording medium such as a magnetic tape, a large number of data tracks can form a data band. When reading data, the head detects the magnetization state of the magnetic material in the magnetic recording medium, converts the magnetization state of the magnetic material into an electrical signal, and further converts the electrical signal into the original data to read the data in the magnetic recording medium.

[0055] During data reading and writing, the head needs to accurately position and track the position of the data writing point or the data reading point in the magnetic recording medium in order to accurately read and write data. Usually, the servo band included in the magnetic recording medium can be used for positioning during data reading and writing. The servo band refers to a region in the magnetic recording medium where longitudinal position information is written. The servo band can be pre-written during the production process of the magnetic recording medium, and is usually present at certain intervals in the magnetic recording medium. For example, when the magnetic recording medium (such as a magnetic tape) includes 5 servo bands, the 5 servo bands can be located inside the upper and lower edges of the magnetic recording medium, and the adjacent servo bands have the same interval, and the adjacent servo bands are used to form data tracks.

[0056] Longitudinal position information (LPOS), also referred to as logical position information, is used to indicate the logical position of a magnetic head in a magnetic recording medium. During data writing or reading by the magnetic head, a servo head in the magnetic recording drive reads a servo track at a data writing point or a data reading point, obtains a servo signal, and a processor in the magnetic recording drive decodes the servo signal and converts the servo signal into longitudinal position information to indicate the logical position of the data writing point or the data reading point in the magnetic recording medium.

[0057] It can be understood that, since the function of the longitudinal position information is to inform the magnetic recording drive of the logical position of the data writing point or the data reading point in the magnetic recording medium, the longitudinal position information is usually in the form of a data block number or a track number, rather than a specific physical position, and the physical position of the data writing point or the data reading point in the magnetic recording medium cannot be determined by the longitudinal position information.

[0058] During data writing or reading of the magnetic recording medium, a read-write abnormality may occur at a certain point due to a physical defect of the magnetic recording medium (for example, damage to the magnetic recording medium). In the related art, the magnetic recording drive can obtain the longitudinal position information of the certain point to avoid the certain area in subsequent data writing or reading.

[0059] However, the longitudinal position information cannot determine the position information of the certain point in the physical layer of the magnetic recording medium (i.e., the actual position of the certain position in the magnetic recording medium), and if the certain point is to be positioned in the physical layer, the strength of the magnetic signal in the magnetic recording medium needs to be identified. However, since the certain point is usually a point with a micron-level size and no specific topographic features, the certain point cannot be identified by a microscope or a high-resolution magnetic imaging method in a magnetic recording medium with a length size of meters or kilometers and a width size of millimeters, and a user has difficulty in performing physical layer processing (for example, repairing the certain position in the magnetic recording medium) on the magnetic recording medium.

[0060] Therefore, the present application provides a magnetic recording medium including a servo track and a positioning track, wherein the servo track is used to indicate longitudinal position information, and the positioning track is used to indicate physical position information, and the physical position information is used to indicate the actual physical position of the longitudinal position information on the magnetic recording medium.

[0061] In the magnetic recording medium, in addition to the original servo track, a positioning track for indicating the physical position information is additionally added. Since the physical position information can indicate the actual physical position of a certain point, the logical layer position information and the physical layer position information of the magnetic recording medium are connected, and the user can easily perform physical layer processing on the magnetic recording medium.

[0062] In order to make the technical solutions of the present application clearer and easier to understand, the application scenarios of the present application are introduced below with reference to the drawings.

[0063] Referring to a system architecture diagram of a magnetic recording drive and a magnetic recording medium shown in FIG. 1, in the embodiment of the present application, the magnetic recording drive 20 is used to access the magnetic recording medium 10, for example, the magnetic recording drive 20 can write data to the magnetic recording medium 10, or the magnetic recording drive 20 can read data from the magnetic recording medium 10.

[0064] In the embodiment of the present application, the magnetic recording medium 10 includes a servo band 11 and a positioning band 12, the servo band 11 indicates longitudinal position information, and the positioning band 12 indicates physical position information.

[0065] The positioning band 12 can be written by a servo writer or a magnetic recording drive. Specifically, the servo writer or the magnetic recording drive can write physical position information in the magnetic recording medium 10, so that the positioning band 12 is formed in the magnetic recording medium 10.

[0066] In the embodiment of the present application, the physical position information can be used to indicate the real physical position of the longitudinal position information on the magnetic recording medium 10. That is, for a certain point of the magnetic recording medium 10, the longitudinal position information indicated by the servo band 11 and the physical position information indicated by the positioning band 12 are associated, and the corresponding physical position information can be determined through the longitudinal position information, thereby realizing the association between the logical level position information and the physical level position information of the magnetic recording medium 10.

[0067] Since the physical position information can be used to indicate the real physical position, in the magnetic recording medium 10 provided in the embodiment of the present application, the positioning band 12 can be observed at the physical level. For example, the positioning band 12 can be observed by an electron microscope, an optical microscope, or the like.

[0068] That is, unlike the conventional magnetic recording medium which only includes a servo band, the magnetic recording medium 10 provided in the embodiment of the present application also includes a positioning band 12, so that the logical level longitudinal position information is provided by the servo band 11, for example, the logical level position information is provided to the magnetic recording drive 20 in the process of data writing or data reading by the magnetic recording drive 20. The physical level physical position information is provided by the positioning band 12, and the real position information at the physical level is provided to the user.

[0069] In the magnetic recording medium 10 provided by the embodiments of the present application, the relationship between the longitudinal position information and the physical position information can be determined in different ways. In some embodiments, the physical position information can be the longitudinal position information, and in other embodiments, the physical position information can also have a mapping relationship with the longitudinal position information, for example, the longitudinal position information is converted into the physical position information based on a preset conversion rule to establish the mapping relationship.

[0070] Based on the description of the system architecture, the magnetic recording medium provided by the embodiments of the present application can realize physical level position positioning. Referring to a scene schematic diagram of a positioning process of a magnetic recording medium shown in FIG. 2, during the process of the magnetic recording drive 20 accessing the magnetic recording medium 10, physical level positioning can be realized on the magnetic recording medium 10, that is, the real physical position of a certain point on the magnetic recording medium 10 is determined. Similar to the foregoing, the magnetic recording medium 10 includes the servo band 11 and the positioning band 12, the servo band 11 indicates the longitudinal position information, and the positioning band 12 indicates the physical position information.

[0071] In some possible implementation manners, the magnetic recording medium provided by the embodiments of the present application can realize physical level position positioning for an access error position. Specifically, the magnetic recording drive 20 is configured to detect an access error when accessing the magnetic recording medium, determine the longitudinal position information of the access error according to the servo band on the magnetic recording medium, and determine the physical position information based on the LPOS of the access error.

[0072] The magnetic recording drive 20 accessing the magnetic recording medium 10 can include the magnetic recording drive 20 writing data in the magnetic recording medium 10 and the magnetic recording drive 20 reading data in the magnetic recording medium 10, and correspondingly, the access error can include a data writing error and a data reading error. Generally, the access error is caused by physical layer damage of the magnetic recording medium 10, and therefore, the magnetic recording drive 20 can combine the positioning band 12 on the magnetic recording medium 10 to physically position the position of the access error.

[0073] Since the physical position information can be used to indicate the real physical position of the longitudinal position information of the access error on the magnetic recording medium 10, after the physical position information is determined, the real physical position of the access error on the magnetic recording medium 10 can be positioned. In this way, the user can physically observe the magnetic recording medium 10, compare the observation result obtained by observing the magnetic recording medium 10 with the physical position information, and then determine the position where the observation result matches the physical position information of the access error as the real physical position of the access error in the magnetic recording medium 10 to realize physical level positioning.

[0074] Based on the system structure diagram shown in FIG. 1 and the application scenario diagram shown in FIG. 2, the application provides a magnetic recording medium. The magnetic recording medium provided by the application is described below in combination with an embodiment.

[0075] In the magnetic recording medium 10 provided by the application, a servo band 11 and a positioning band 12 are included. The servo band 11 indicates longitudinal position information, and the positioning band 12 indicates physical position information, which is used to indicate the real physical position of the longitudinal position information on the magnetic recording medium 10.

[0076] In other words, for a certain point on the magnetic recording medium 10, the longitudinal position information can represent a logical position, and generally, the magnetic recording drive 20 can determine the position of the point on the logical level through the longitudinal position information, for example, the magnetic recording drive 20 can determine that the point is located at the Mth position of the Nth data block through the longitudinal position information, where N and M are both natural numbers greater than 0. The physical position information can represent the real physical position of the longitudinal position information, that is, the physical position information can provide the position of the longitudinal position information on the physical level.

[0077] It should be noted that in the embodiment of the application, the physical position information indicating the real physical position of the longitudinal position information on the magnetic recording medium 10 can be understood as that the user can determine the real physical position on the magnetic recording medium 10 through the physical position information. In other words, the physical position information does not necessarily have a specific form such as the Xth centimeter, as long as the user can locate a certain point on the magnetic recording medium 10 on the physical level through the physical position information, that is, the physical position information indicates the real physical position of the longitudinal position information on the magnetic recording medium 10.

[0078] Generally, the positioning band 12 can be observed, and compared with the servo band 11, the positioning band 12 in the magnetic recording medium 10 has a larger size and can be perceived on the physical level in a physical manner.

[0079] In some possible implementation manners, the physical position information can be the longitudinal position information. That is, the physical position information can be the same as the longitudinal position information, but since the physical position information can be observed on the physical level, the physical position information can indicate the real physical position on the magnetic recording medium 10.

[0080] For example, for a point A on the magnetic recording medium 10, the longitudinal position information of the point A is 1500, and the physical position information is the longitudinal position information. At this time, 1500 is written in the positioning band 12 at the position of the point A on the magnetic recording medium 10. In this way, the same longitudinal position information and physical position information are associated by using the positioning band 12, the longitudinal position information can be obtained by reading the servo band 11, and the same physical position information can be determined. By observing the positioning band 12, the real physical position of the point A on the magnetic recording medium 10, that is, the position where 1500 is written in the positioning band 12, is determined.

[0081] In some possible implementation manners, the physical position information can also have a mapping relationship with the longitudinal position information. That is, the longitudinal position information can be converted by a preset conversion rule to form the physical position information. Since the conversion rule is fixed, the mapping relationship between the physical position information and the longitudinal position information can be established by converting the longitudinal position information.

[0082] Since the positioning band 12 can be observed by a user, the conversion rule can generally be a conversion rule that is easy to calculate and distinguish. In some embodiments, the conversion rule can be a binary conversion rule, that is, the longitudinal position information is converted into binary form to obtain the physical position information in binary form, and the physical position information is written in the magnetic recording medium 10 in binary form, for example, a bright pattern represents 1 and a dark pattern represents 0, to form the positioning band 12.

[0083] For example, for a point B on the magnetic recording medium 10, the longitudinal position information of the point B is 1700, and the physical position information has a mapping relationship with the longitudinal position information, which is established by the binary conversion rule. At this time, the longitudinal position information can be obtained by reading the servo band 11, the physical position information is determined to be 11010100100 by converting the longitudinal position information based on the mapping relationship between the physical position information and the longitudinal position information, and the real physical position of the point B on the magnetic recording medium, that is, the position where "bright-bright-dark-bright-dark-bright-dark-bright-dark" is written in the positioning band 12, is determined by observing the positioning band 12.

[0084] In this way, by establishing the mapping relationship between the physical position information and the longitudinal position information, the physical position information and the longitudinal position information are associated, the longitudinal position information is obtained by reading the servo band 11, the physical position information is determined in combination with the mapping relationship, and the real physical position of the longitudinal position information on the magnetic recording medium is determined by observing the positioning band 12.

[0085] The writing process of the positioning band 12 is described below.

[0086] The physical position information indicated by the positioning band 12 can be written by a write transducer deployed in a data writing device. The data writing device can be any device that writes data in a magnetic recording medium, for example, the data writing device can be a write servo or a magnetic recording drive. The write transducer can be understood as an entity component in the data writing device for writing the physical position information.

[0087] The write servo generally refers to a device that writes a servo band in a magnetic recording medium in a process of manufacturing the magnetic recording medium. When the data writing device is the write servo, the write transducer can be an entity component in the write servo for writing longitudinal position information in the magnetic recording medium 10, and in the embodiments of the present application, the write transducer can also be used for writing the physical position information in the magnetic recording medium.

[0088] The magnetic recording drive generally refers to a device that writes data or reads data in a magnetic recording medium in a process of using the magnetic recording medium. When the data writing device is the magnetic recording drive, the write transducer can be an entity component in the magnetic recording drive for writing data in the magnetic recording medium 10, and in the embodiments of the present application, the write transducer can also be used for writing the physical position information in the magnetic recording medium. Different write transducers can correspond to different forms of the positioning band 12. In some embodiments, the write transducer can be a magnetic head, for example, a magnetic head specially designed to write the physical position information, and the data writing device can control the magnetic head to write the physical position information in the magnetic recording medium 10 to form the positioning band 12 represented by the magnetic signal in the magnetic recording medium 10.

[0089] The special design can be understood as a design that changes a magnetic head originally used only for writing longitudinal position information into a magnetic head capable of writing physical position information. For example, the special design can be to add the same write mark as the positioning band 12 to the magnetic head originally used only for writing longitudinal position information, so that the specially designed magnetic head can write the physical position information in the magnetic recording medium 10.

[0090] In the embodiments of the present application, the special design for the magnetic head can be realized by modifying the magnetic head originally used only for writing longitudinal position information, or by additionally adding a magnetic head specially used for writing physical position information. Referring to the schematic diagrams of the magnetic heads shown in FIGS. 3A to 3C, the magnetic head shown in FIG. 3A is a servo write head 31, which is generally used for writing a servo band 11 in a magnetic recording medium 10. The servo write head 31 only contains an "eight" line 311 corresponding to the number of servo bands 11 to write a corresponding number of servo bands 11 in the magnetic recording medium 10. That is, the servo write head 31 can be understood as a magnetic head used only for writing longitudinal position information.

[0091] The magnetic head 32 shown in FIG. 3B can be understood as a specially designed magnetic head provided in the embodiments of the present application, and specifically, the magnetic head 32 comprises not only the "eight" shaped line 311, but also the "|"-shaped line 312 for writing the positioning band 12. Through the special design of adding the "|"-shaped line 312 in the magnetic head 32, the magnetic head 32 can write the servo band 11 and the positioning band 12 in the magnetic recording medium 10 at the same time, that is, the physical position information is written in the magnetic recording medium 10 by modifying the magnetic head originally used only for writing the longitudinal position information.

[0092] The magnetic head 33 shown in FIG. 3C can be understood as a magnetic head specially used for writing the physical position information, and the magnetic head 33 comprises only the "|"-shaped line 312 for writing the positioning band 12. The servo writing magnetic head 31 is used in cooperation with the magnetic head 33, and the servo band 11 and the positioning band 12 can be written in the magnetic recording medium 10 respectively, that is, the physical position information is written in the magnetic recording medium 10 by additionally adding the magnetic head specially used for writing the physical position information.

[0093] That is, when the writing transducer is a magnetic head, the physical position information can be characterized by a magnetic signal. In this case, the size of the positioning band 12 can be determined according to the size of the magnetic head, for example, the width of the positioning band 12 can be 30 microns, and the bit pitch can be 3 microns. The bit pitch can be understood as the pitch between each physical position information in the positioning band 12. For example, when the physical position information and the longitudinal position information are mapped based on a binary conversion rule, each physical position information in the positioning band 12 is characterized by "bright" or "dark", and the pitch between adjacent "bright" or "dark" can be 3 microns.

[0094] In other embodiments, the writing transducer can be a dotter, for example, a laser, a puncher, etc. The data writing device can control the dotter to write the physical position information in the magnetic recording medium 10, and form the positioning band 12 characterized by dotting marks in the magnetic recording medium 10.

[0095] For example, when the dotter is a puncher, the dotting mark can be a hole, and the positioning band 12 characterized by the hole can be formed in the magnetic recording medium 10. For another example, when the dotter is a laser, the dotting mark can be a burning mark, and the positioning band 12 characterized by the burning mark can be formed in the magnetic recording medium 10.

[0096] That is, when the writing transducer is a dotter, the physical position information can be characterized by dotting marks (for example, a sequence of original points). In this case, the size of the positioning band 12 can be determined according to the size of the dotter, for example, the bit pitch of the positioning band 12 can be 2 microns.

[0097] In the embodiments of the present application, the positioning band 12 in different forms can correspond to different observation manners through different write transducers. When the write transducer is a magnetic head, the positioning band 12 can be identified through observation of a magnetic signal, for example, the positioning band 12 can be observed through a magnetic force microscope, a magneto-optical Kerr effect, a magnetic powder development, etc., to determine the physical position information indicated by the positioning band 12. When the write transducer is a dotter, the positioning band 12 can be identified through optical observation, for example, the positioning band 12 can be observed through an optical microscope, an electron microscope, etc., to determine the physical position information indicated by the positioning band 12.

[0098] Referring to the schematic diagram of the magnetic recording medium shown in FIG. 4, the magnetic recording medium 10 includes a servo band 401, a positioning band 402 and a data band 403, wherein the positioning band 402 is a positioning band formed by writing physical position information in the magnetic recording medium 10 in the form of a magnetic signal through a magnetic head. Referring to the schematic diagram of the magnetic recording medium shown in FIG. 5, the magnetic recording medium 10 includes a servo band 501, a positioning band 502 and a data band 503, wherein the positioning band 502 is a positioning band formed by writing physical position information in the magnetic recording medium 10 in the form of a dot mark through a dotter.

[0099] The magnetic recording medium 10 provided by the embodiments of the present application can write physical position information at different stages using different data writing devices. In some embodiments, the positioning band 12 can be pre-written at the production stage of the magnetic recording medium 10. In specific implementation, the data writing device can be a servo writer, which can be used to produce the magnetic recording medium. The servo writer can write physical position information at the production stage of the magnetic recording medium 10.

[0100] In other words, at the production stage of the magnetic recording medium 10, the servo band 11 and the positioning band 12 are written by the servo writer for producing the magnetic recording medium. In this way, the physical position information is written when the magnetic recording medium 10 is shipped, and no additional processing of the magnetic recording medium 10 is required in the subsequent use process.

[0101] Referring to the structure diagram of the write servo machine shown in FIG. 6, the write servo machine 60 includes a tape feeding wheel 601 and a tape winding wheel 602, which can transport and fix the magnetic recording medium in the production stage of the magnetic recording medium under the drive of a control device composed of a drive device, a control circuit, a pulse generating circuit and a preamplifier. The write servo machine 60 also includes a demagnetization head 603, a servo head 604 and a servo read head 606. The demagnetization head 603 is used to demagnetize the magnetic recording medium before data writing. The servo head 604 is used to write or read longitudinal position information in the magnetic recording medium to form a servo band in the magnetic recording medium. The servo read head 606 is used to check the written data, for example, to check the longitudinal position information written by the servo head 604.

[0102] In the embodiments of the present application, the servo head 604 can be replaced by a specially designed head for writing physical position information. The replaced head can write physical position information in the magnetic recording medium to form a positioning band in the magnetic recording medium. In addition, the write servo machine 60 can also include a dotter 605, which can also write physical position information in the magnetic recording medium to form a positioning band in the magnetic recording medium.

[0103] In other embodiments, the positioning band 12 can also be written in the use stage of the magnetic recording medium 10. In specific implementation, the data writing device can be a magnetic recording drive, which can be used to read and / or write data. The magnetic recording drive can write physical position information in the use stage of the magnetic recording medium 10.

[0104] In other words, the servo band 11 is written by the magnetic recording drive in the use stage of the magnetic recording medium 10. In some possible implementations, the magnetic recording drive can write physical position information in the magnetic recording medium 10 in response to the existence of access errors of the magnetic recording medium 10, for example, the existence of reading data faults and / or writing data faults. In this way, the physical position information is written by the magnetic recording drive in combination with specific physical positioning requirements when there is a physical positioning requirement of the magnetic recording medium 10, so as to meet different use scenarios of the magnetic recording medium 10.

[0105] Further, the embodiments of the present application do not limit the range of the positioning band 12. In some embodiments, the positioning band 12 can cover the entire longitudinal range of the magnetic recording medium 10. That is, the length of the positioning band 12 is the same as the length of the magnetic recording medium 10, and physical position information is written in the entire longitudinal range of the magnetic recording medium 10. For example, when the positioning band 12 is formed in the production stage of the magnetic recording medium 10, the write servo machine can write physical position information so that the positioning band 12 covers the entire longitudinal range of the magnetic recording medium 10, meeting the requirement of physical positioning at each position of the magnetic recording medium 10.

[0106] In some embodiments, the positioning band 12 can cover the entire longitudinal range of the magnetic recording medium 10. That is, the length of the positioning band 12 is equal to the length of the magnetic recording medium 10, and the physical position information is written in the entire longitudinal range of the magnetic recording medium 10.

[0107] In some embodiments, the positioning band 12 can cover only a partial longitudinal range of the magnetic recording medium 10. That is, the length of the positioning band 12 is less than the length of the magnetic recording medium 10, and the physical position information is written in a partial longitudinal range of the magnetic recording medium 10.

[0108] In some embodiments, the positioning band 12 can be located in a region of the magnetic recording medium 10 associated with a failure point. Here, the failure point can be understood as a point in the magnetic recording medium 10 where an access error exists.

[0109] That is, when the positioning band 12 is formed in the use stage of the magnetic recording medium 10, the magnetic recording drive can write the physical position information in a region of the magnetic recording medium 10 associated with a failure point (for example, a region with a distance to the failure point less than a set threshold), so that the positioning band 12 covers a partial longitudinal range of the magnetic recording medium 10.

[0110] In this way, without writing the physical position information in the entire longitudinal range, the processing resources are saved, the excessive writing cost is avoided, and the processing efficiency is improved.

[0111] In some possible implementations, as shown in FIG. 4, the positioning band 12 can be located between the edge of the magnetic recording medium 10 and the servo band 11 outside. In this way, the positioning band 12 is formed without affecting the original structure of the servo band 11, and the user observes the positioning band 12 by observing the servo band 11 between the edge of the magnetic recording medium 10 and the outside.

[0112] In some possible implementations, the positioning band 12 can also be located between any two data bands in the magnetic recording medium 10. As shown in the schematic diagram of the magnetic recording medium in FIG. 7, the magnetic recording medium 10 includes a servo band 701, a positioning band 702, and a data band 703, wherein the positioning band 702 is located between two adjacent data bands 703. In this way, the positioning band 12 is formed by using the gap between the multiple data bands, the space of the magnetic recording medium 10 is fully utilized, and the user observes the positioning band 12 by observing the two data bands in the magnetic recording medium 10.

[0112] Based on the above description, in the magnetic recording medium provided in the embodiments of the present application, the physical position information is additionally written based on the originally existing servo band of the magnetic recording medium, the positioning band is formed in the magnetic recording medium, the logical position and the physical position of the magnetic recording medium are associated by using the positioning band to associate the physical position information and the longitudinal position information, and the user is facilitated to perform the physical layer processing on the magnetic recording medium.

[0113] Based on the magnetic recording medium provided in the foregoing, the application further provides a positioning method of the magnetic recording medium. Referring to a flowchart of the positioning method of the magnetic recording medium shown in FIG. 8, the method can be executed by the magnetic recording drive 20, and the following steps are executed when the magnetic recording drive 20 detects an access error in accessing the magnetic recording medium 10:

[0114] Here, accessing the magnetic recording medium 10 can be understood as reading data or writing data in the magnetic recording medium 10, and the access error can be understood as a reading data failure or a writing data failure.

[0115] In other words, the positioning method provided in the embodiments of the application can be applied to a failure detection scenario. In the process of accessing the magnetic recording medium 10 by the magnetic recording drive 20, if an access error occurs, the magnetic recording drive 20 can detect the access error and report it.

[0116] S801: The magnetic recording drive 20 determines longitudinal position information of the access error according to the servo track 11 on the magnetic recording medium 10.

[0117] In specific implementation, the magnetic recording drive 20 can include a servo head and a decoder. The servo head can be used to read the servo track, and the decoder can be used to decode. The servo head reads the servo track 11 of the magnetic recording medium 10 to obtain a magnetic signal of the servo track 11, and the decoder decodes the magnetic signal of the servo track 11 to convert the magnetic signal of the servo track 11 into an electrical signal (i.e., the longitudinal position information), which represents a logical position of a head of the magnetic recording medium 10.

[0118] S802: The magnetic recording drive 20 determines physical position information based on the longitudinal position information of the access error.

[0119] Here, the physical position information can be used to indicate a real physical position of the longitudinal position information of the access error on the magnetic recording medium 10. That is, after the physical position information is determined through the longitudinal position information, the physical positioning at the access error can be realized in the magnetic recording medium 10 based on the physical position information.

[0120] In some possible implementation, the physical position information is the longitudinal position information of the access error. At this time, after the magnetic recording drive 20 determines the longitudinal position information, the same physical position information as the longitudinal position information can be determined. In this way, the user can observe the positioning track 12 in the magnetic recording medium 10 to determine a position matching the physical position information.

[0121] For example, for a point A on the magnetic recording medium 10, the magnetic recording drive 20 determines the longitudinal position information of the point A as 1500, and then the magnetic recording drive 20 can determine the physical position information of the point A as 1500. A user observes the positioning band 12 in the magnetic recording medium 10, and determines the position with 1500 written in the positioning band 12 as the real physical position of the point A.

[0122] In some other possible implementation manners, the magnetic recording drive 20 can convert the longitudinal position information of the access error into the physical position information according to a preset conversion rule. In this way, a user can observe the positioning band 12 in the magnetic recording medium 10, and determine the position matching the physical position information.

[0123] For example, the preset conversion rule is a binary conversion rule, for a point B on the magnetic recording medium 10, the magnetic recording drive 20 determines the longitudinal position information of the point B as 1700, and then the magnetic recording drive 20 can determine the physical position information of the point B as 11010100100 based on the binary conversion rule. A user observes the positioning band 12 in the magnetic recording medium 10, and determines the position with "bright bright dark bright dark bright dark dark" written in the positioning band 12 as the real physical position of the point B.

[0124] It should be noted that in the embodiments of the present application, the relationship between the physical position information and the longitudinal position information (i.e., the physical position information is the relationship of the longitudinal position information, or the physical position information and the longitudinal position information have a mapping relationship) can be stored in different ways, so that the magnetic recording drive 20 can determine the physical position information after determining the longitudinal position information. In some embodiments, the relationship between the physical position information and the longitudinal position information can be stored in the memory of the magnetic recording drive 20. For example, after the positioning band 12 is written in the magnetic recording medium 10, the relationship between the physical position information and the longitudinal position information is sent and stored in the memory of the magnetic recording drive 20 by any transmission manner. For another example, for an integrated magnetic recording medium 10 and magnetic recording drive 20, after the positioning band 12 is written in the magnetic recording medium 10, the relationship between the physical position information and the longitudinal position information is directly stored in the memory of the magnetic recording drive 20.

[0125] For example, a flag indicating the relationship between the physical position information and the longitudinal position information is stored in the memory of the magnetic recording drive 20, and the flag 0 indicates "the physical position information is the longitudinal position information", and the flag 1 indicates "there is a mapping relationship between the physical position information and the longitudinal position information". When the flag 1 is stored in the memory of the magnetic recording drive 20, the conversion rule or the mapping relationship can also be stored. In this way, after the magnetic recording drive 20 determines the longitudinal position information, the relationship between the physical position information and the longitudinal position information is determined through the flag in the memory. When the flag is 0, the longitudinal position information is directly determined as the physical position information, and when the flag is 1, the longitudinal position information is converted into the physical position information through the conversion rule in the memory, or the longitudinal position information is converted into the physical position information through the mapping relationship in the memory.

[0126] In other embodiments, the relationship between the physical position information and the longitudinal position information can also be recorded in the magnetic recording medium 10. That is, the relationship between the physical position information and the longitudinal position information can be actually written into the magnetic recording medium 10, so that for the magnetic recording medium 10 which is inconvenient for data transmission between devices, or for the independent magnetic recording medium 10 and the magnetic recording drive 20, since the magnetic recording drive 20 can read the data on the magnetic recording medium 10, the relationship between the physical position information and the longitudinal position information is written into the magnetic recording medium 10, so that the magnetic recording drive 20 obtains the relationship between the physical position information and the longitudinal position information.

[0127] For example, a flag indicating the relationship between the physical position information and the longitudinal position information is recorded in the magnetic recording medium 10, and the flag 0 indicates "the physical position information is the longitudinal position information", and the flag 1 indicates "there is a mapping relationship between the physical position information and the longitudinal position information". When the flag 1 is recorded in the magnetic recording medium 10, the conversion rule or the mapping relationship can also be recorded. In this way, after the magnetic recording drive 20 determines the longitudinal position information, the relationship between the physical position information and the longitudinal position information is determined through the flag recorded in the magnetic recording medium 10. When the flag is 0, the physical position information is directly determined, and when the flag is 1, the longitudinal position information is converted into the physical position information through the conversion rule recorded in the magnetic recording medium 10, or the longitudinal position information is converted into the physical position information through the mapping relationship recorded in the magnetic recording medium 10.

[0128] It should be noted that in this case, the relationship between the physical position information and the longitudinal position information can be recorded as any position in the magnetic recording medium 10, for example, a position in the magnetic recording medium 10 which is not a servo band, a positioning band or a data band.

[0129] The above describes the way of determining the physical position information by the magnetic recording drive 20, and in other possible implementations, the process of determining the physical position information can also be performed by the user.

[0130] In a specific implementation, after the magnetic recording drive 20 determines the longitudinal position information of the access error according to the servo band 11 on the magnetic recording medium 10, the user can take the magnetic recording medium 10 out of the magnetic recording drive 20, determine the physical position information according to the relationship between the physical position information and the longitudinal position information, and further observe the positioning band 12 in the magnetic recording medium 10, and determine the position in the positioning band 12 that matches the physical position information as the real physical position of the access error.

[0131] Generally, the relationship between the physical position information and the longitudinal position information can be previously informed to the user, for example, the instruction manual of the magnetic recording medium indicates that “the physical position information is the longitudinal position information” or “the physical position information and the longitudinal position information have a mapping relationship”, and when the physical position information and the longitudinal position information have a mapping relationship, the conversion rule or the specific mapping relationship is further indicated. In this way, the user determines the physical position information based on the longitudinal position information by reading the instruction manual, and realizes the physical positioning.

[0132] After determining the real physical position of the access error on the magnetic recording medium 10, the user can also perform fault analysis and / or fault repair on the real physical position of the access error on the magnetic recording medium 10. In this way, for the scenario that the magnetic recording medium has defects or faults, the real physical position of the access error is determined through the physical position information recorded in the positioning band on the magnetic recording medium, which can realize rapid and accurate fault analysis and fault repair at the physical layer, improve the fault analysis efficiency of the magnetic recording medium, and reduce the repair loss of the magnetic recording medium.

[0133] Based on the positioning method of the magnetic recording medium in the foregoing embodiments, an embodiment of the present application further provides a positioning device of a magnetic recording medium. The positioning device of the magnetic recording medium is described below with reference to the accompanying drawings.

[0134] Referring to a structural schematic diagram of the positioning device of the magnetic recording medium shown in FIG. 9, the positioning device 90 of the magnetic recording medium includes:

[0135] A determination module 901, configured to, when an access error is detected in accessing the magnetic recording medium: determine longitudinal position information of the access error according to a servo band on the magnetic recording medium.

[0136] The determination module 901 is further configured to determine physical position information based on the longitudinal position information of the access error, wherein the physical position information is used to indicate a real physical position of the longitudinal position information of the access error on the magnetic recording medium.

[0137] In some possible implementation manners, the physical position information is longitudinal position information of the access error.

[0138] In some possible implementation manners, the determining module 901 is specifically configured to:

[0139] According to a preset conversion rule, the longitudinal position information of the access error is converted into the physical position information.

[0140] The application further provides a magnetic recording drive. As shown in FIG. 10, the magnetic recording drive 1000 includes a processor 1010, a memory 1020, a communication interface 1030 and a bus 1040. The processor 1010, the memory 1020 and the communication interface 1030 communicate through the bus 1040. The bus 1040 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, only one thick line is used in FIG. 10, but it does not mean that there is only one bus or only one type of bus. The communication interface 1030 is used for communication with the outside.

[0141] The processor 1010 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a graphics processing unit (GPU), or one or more integrated circuits. The processor 1010 can also be an integrated circuit chip with a processing capability that has a signal processing function. In the implementation process, the functions of various modules in the positioning device of the magnetic recording medium can be completed by the integrated logic circuit of hardware in the processor 1010 or the instructions in the form of software. The processor 1010 can also be a general processor, a digital signal processor (DSP), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general processor can be a microprocessor or the processor can also be any conventional processor, etc., which can be directly embodied as a hardware decoding processor to execute the disclosed methods, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1020, and the processor 1010 reads the information in the memory 1020 and completes part or all of the functions of the positioning device of the magnetic recording medium in combination with the hardware thereof.

[0142] The memory 1020 can include a volatile memory such as a random access memory (RAM). The memory 1020 can also include a non-volatile memory such as a read-only memory (ROM), a flash memory, an HDD or an SSD.

[0143] The memory 1020 stores executable codes, and the processor 1010 executes the executable codes to perform the method performed by the aforementioned positioning device of the magnetic recording medium.

[0144] Specifically, in the case where the determination module 901 described in the embodiment shown in FIG. 9 is implemented in the embodiment shown in FIG. 8, and the determination module 901 described in the embodiment shown in FIG. 9 is implemented by software, the software or program codes required for the determination module 901 to perform the functions of the steps in the embodiment shown in FIG. 8 are stored in the memory 1020, and the processor 1010 is configured to execute the instructions in the memory 1020 to implement the method performed by the positioning device of the magnetic recording medium.

[0145] In addition, the embodiment of the present application further provides a storage device, as shown in FIG. 1, the storage device comprises the magnetic recording medium 10 and the magnetic recording drive 20 provided in the foregoing.

[0146] In addition, the embodiment of the present application further provides a computer readable storage medium, the computer readable storage medium stores instructions, when the instructions are executed on one or more computing devices, the one or more computing devices execute the method performed by each module of the positioning device of the magnetic recording medium.

[0147] In addition, the embodiment of the present application further provides a computer program product, when the computer program product is executed by one or more computing devices, the one or more computing devices execute any one of the positioning methods of the magnetic recording medium. The computer program product can be a software package, in the case where any one of the positioning methods of the magnetic recording medium is required, the computer program product can be downloaded and executed on the computer.

[0148] In addition, it should be noted that the system embodiments described above are merely illustrative, wherein the modules described as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, i.e., they can be located in one place or distributed on multiple network modules. According to actual needs, part or all of the modules can be selected to achieve the purpose of the embodiment. In addition, in the system embodiment provided by the present application, the connection relationship between the modules indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0149] Those skilled in the art can clearly understand that the application can be implemented by means of software plus necessary universal hardware, and of course can also be implemented by means of dedicated hardware including special integrated circuit, special CPU, special memory, special component, etc. Generally, any function completed by computer program can be easily implemented by corresponding hardware, and the specific hardware structure for implementing the same function can also be various, such as analog circuit, digital circuit or special circuit, etc. However, for the application, software program implementation is a better embodiment. Based on such understanding, the technical solution of the application or the part of the application which makes contribution to the prior art can be embodied in the form of software product, which is stored in readable storage medium, such as computer floppy disk, U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., and includes a plurality of instructions for making a computer device (which can be personal computer, training device or network device, etc.) execute the method described in various embodiments of the application.

[0150] In the above embodiments, the implementation can be achieved by software, hardware, firmware or any combination thereof, entirely or partially. When implemented by software, the implementation can be achieved in the form of a computer program product, entirely or partially.

[0151] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the flow or function described in the embodiments of the application is generated entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another, for example, the computer instructions can be transmitted from one website, computer, training device or data center to another website, computer, training device or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be stored by a computer or a data storage device such as a training device, a data center, etc. integrated with one or more available media sets. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

Claims

1. A magnetic recording medium, characterized by comprising: The magnetic recording medium comprises: a servo band for indicating longitudinal position information LPOS; a positioning band for indicating physical position information, the physical position information being used to indicate the real physical position of the LPOS on the magnetic recording medium.

2. The magnetic recording medium according to claim 1, wherein The physical position information is the LPOS; or the physical position information has a mapping relationship with the LPOS.

3. The magnetic recording medium according to claim 1 or 2, characterized by The positioning band is characterized by a magnetic signal, or the positioning band is characterized by a dot mark.

4. The magnetic recording medium according to any one of claims 1 to 3, characterized by, The positioning band is located in a region associated with a fault point in the magnetic recording medium, the fault point being a point where an access error exists in the magnetic recording medium.

5. The magnetic recording medium according to any one of claims 1 to 4, characterized by, The positioning band is located between the edge of the magnetic recording medium and the servo band on the outside, or the positioning band is located between any two data bands in the magnetic recording medium.

6. The magnetic recording medium according to any one of claims 1 to 5, characterized by, The positioning band is written by a data writing device, the data writing device being a write servo machine or a magnetic recording drive; wherein the write servo machine is used to produce a magnetic recording medium, and the magnetic recording drive is used to read data and / or write data.

7. A storage device, characterized by The storage device comprises a magnetic recording drive and the magnetic recording medium according to any one of claims 1 to 6.

8. A method of positioning a magnetic recording medium, characterized by, The method comprises: When an access error is detected in accessing the magnetic recording medium: According to the servo band on the magnetic recording medium, the longitudinal position information LPOS of the access error is determined; Based on the LPOS of the access error, physical position information is determined, the physical position information being used to indicate the real physical position of the LPOS of the access error on the magnetic recording medium.

9. The positioning method according to claim 8, characterized in that, The physical position information is the LPOS of the access error.

10. The positioning method of claim 8, wherein, Based on the LPOS of the access error, the physical position information is determined, comprising: According to a preset conversion rule, the LPOS of the access error is converted into the physical position information.

11. A positioning device for a magnetic recording medium, characterized by comprising: The device comprises: A determination module, configured to, when an access error is detected in accessing the magnetic recording medium: According to the servo band on the magnetic recording medium, the longitudinal position information LPOS of the access error is determined; 12. The positioning device of claim 11, wherein, The determination module is further configured to, based on the LPOS of the access error, determine physical position information, the physical position information being used to indicate the real physical position of the LPOS of the access error on the magnetic recording medium.

13. The positioning device of claim 11, wherein, The physical position information is the LPOS of the access error. The determination module is specifically configured to:

14. A magnetic recording drive, characterized by, According to a preset conversion rule, the LPOS of the access error is converted into the physical position information.

15. A computer-readable storage medium, characterized in that, The magnetic recording drive comprises at least one processor and at least one memory, the at least one memory storing computer readable instructions; the at least one processor executes the computer readable instructions to enable the magnetic recording drive to perform the method according to any one of claims 8 to 10.

16. A computer program product, characterised in that, The computer readable instructions are used to implement the positioning method according to any one of claims 8 to 10. The computer readable instructions are used to implement the positioning method according to any one of claims 8 to 10.

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