Magnetic head, magnetic head driving module, magnetic storage device, and electronic device

Abstract

Embodiments of the present application disclose a magnetic head, a magnetic head driving module, a magnetic storage device and an electronic device. The magnetic head comprises an insulating dielectric layer and a device layer embedded in the insulating dielectric layer, the device layer comprises a pair of read head device groups and write head device groups, the read head device groups and the write head device groups are arranged at intervals in a first direction, and the interval between the read head device groups and the write head device groups can cover one data band of a magnetic storage medium. Based on the magnetic head architecture with the read head device groups and the write head device groups, the reading and writing of two data bands arranged at intervals on the side of the magnetic storage medium can be realized; through two magnetic head wafers of the same specification, a magnetic head driving module meeting the read-write operation can be constructed, and the cost of tape-out is effectively reduced. At the same time, the moving access stroke of the magnetic head can be reduced, the read-write efficiency and data read-write precision are effectively improved, the occupation of the internal space of the device is reduced, and the space utilization and the capacity density of the storage space of the magnetic tape storage device are improved.

Description

Technical Field

[0001] This application relates to the field of data storage technology, and in particular to a magnetic head, a magnetic head drive module, a magnetic storage device, and an electronic device. Background Technology

[0002] With the rapid development of computing and storage, magnetic storage media have become widely used. In related technologies, a magnetic head chip is equipped with a magnetic head device group, which corresponds to a data band on the magnetic storage medium side. Data is read or written by accessing the corresponding track on the data band side through the magnetic head device. Given the miniaturization trend of magnetic storage devices, it is necessary to reasonably control the space occupied by the magnetic head device.

[0003] Taking magnetic tape storage devices as an example, the magnetic medium layer of the magnetic tape includes multiple data tapes, which are arranged sequentially along the width of the tape. When the magnetic head is coupled to the tape, the tape moves relative to the head along the reel direction, allowing the head of the head drive module to access the data tapes. Simultaneously, the head drive module can move the head along the width of the tape, enabling effective access to each data tape. The thickness of the magnetic tape storage device is related to the travel distance of the head when accessing each data tape. For N data tapes, the head needs to move N-1 times to access all N data tapes, thus hindering effective improvement in read / write efficiency. Furthermore, the head travel height occupies space in the thickness direction of the casing, creating a bottleneck in the miniaturization of magnetic storage devices. Summary of the Invention

[0004] This application provides a magnetic head, a magnetic head drive module, a magnetic storage device, and an electronic device. Through structural optimization, the space occupied by the magnetic head can be reasonably controlled while effectively improving the magnetic head access efficiency and data read / write accuracy.

[0005] The first aspect of this application provides a magnetic head adapted to a magnetic storage medium. The magnetic head includes an insulating dielectric layer and a device layer embedded in the insulating dielectric layer. The device layer includes a pair of read head device groups and a write head device group, which are spaced apart in a first direction. The spacing between the read head device group and the write head device group can cover a data band of the magnetic storage medium.

[0006] This configuration, based on a magnetic head architecture with read and write head groups, enables the reading and writing of two data bands spaced apart on the magnetic storage medium side. Correspondingly, the head drive module can be configured with two magnetic heads, each with its own read and write head group. In the direction of data band movement relative to the heads on the magnetic storage medium side, the write head group of one head is positioned opposite the read head group of the other. Thus, when the magnetic head is coupled with the magnetic storage medium (taking magnetic tape as an example), the tape moves relative to the heads along the reel direction. The read head group of one head and the write head group of the other can be matched to perform read and write operations on one data band. In practical applications, a head drive module satisfying basic read and write operations can be constructed based on two magnetic head wafers of the same specification, effectively reducing chip fabrication costs. Simultaneously, the spacing between the read and write head groups on the head side can cover one data band of the magnetic storage medium, enabling simultaneous access to at least two data bands and reducing the head's travel distance. As a result, read and write efficiency is effectively improved, and the impact of mobile positioning accuracy on accurate data access can be reasonably controlled, thereby improving data read and write accuracy.

[0007] Furthermore, compared to solutions where the magnetic head needs to move to access all data tapes, the embodiments of this application can effectively reduce the movement of the magnetic head. For example, for a magnetic tape with four data tapes, the magnetic head drive module can drive two magnetic heads to move once to read and write the other two data tapes that are spaced apart on the magnetic storage medium side. This can further reduce the space occupied in the thickness direction inside the device, effectively improve the space utilization of the magnetic tape storage device, and provide technical support for further improving the capacity density of storage space in practical scenarios.

[0008] Furthermore, in cases where the write head device group is located in front of the read head device group relative to the direction of tape movement, after the write head device group of one magnetic head completes the data writing, the read head device group of the other magnetic head can read the written data from the tape side, thus achieving a targeted data verification function.

[0009] Based on the first aspect, this application also provides a first implementation of the first aspect: the paired read head device group and write head device group are configured as a pair. Alternatively, the paired read head device group and write head device group are configured as multiple pairs. In this way, the requirements of data band configuration on different magnetic storage media sides can be met.

[0010] In practical applications, for a magnetic storage medium side with N parallel data bands, the magnetic head 1 can be configured with N / 4 pairs of read head device groups and write head device groups.

[0011] Based on the first aspect, or the first implementation of the first aspect, this application also provides a second implementation of the first aspect: both the read head device group and the write head device group include multiple magnetic head devices, and the multiple magnetic head devices are spaced apart in a first direction to form a magnetic head device array. In this way, the number of magnetic head devices in each group can be consistent with the number of tracks in the corresponding data band, and the spaced-apart magnetic head device array in the first direction enables independent access to each track of the data band.

[0012] For example, the head device group may include thirty-two head devices.

[0013] Based on the first aspect, this application also provides a third implementation of the first aspect: both the read head device group and the write head device group further include two servo read heads, which are located on both sides of the magnetic head device array in the first direction. That is, the two servo read heads are located at both ends of the magnetic head device array, respectively, and are used to read servo information in the servo track on the magnetic tape to achieve precise positioning of the magnetic head.

[0014] In practical applications, the servo information stored in the servo track may include, but is not limited to, synchronization markers, track numbers, position error signals, and other information.

[0015] A second aspect of this application provides a magnetic head driving module, including a base and a magnetic head disposed on the base, the magnetic head being the magnetic head described above. In practical applications, this magnetic head driving module may include two magnetic heads configured in a group, the two magnetic heads being a first magnetic head and a second magnetic head disposed at a distance from each other. In a second direction, the read head device group of the first magnetic head and the write head device group of the second magnetic head are disposed opposite to each other, and the read head device group of the second magnetic head and the write head device group of the first magnetic head are disposed opposite to each other, wherein the second direction intersects the first direction.

[0016] In this way, when the write head device group is located in front of the read head device group in the direction of movement relative to the magnetic storage medium, after the write head device group of one magnetic head completes the data writing, the read head device group of the other magnetic head can read the written data from the magnetic tape side, thus realizing the data verification function in a targeted manner.

[0017] Based on the second aspect, this application also provides a first implementation of the second aspect: the magnetic head drive module includes two sets of magnetic heads configured in groups, namely a first magnetic head group and a second magnetic head group; in a second direction, the first magnetic head group and the second magnetic head group are spaced apart, and the second magnetic head of the first magnetic head group is positioned facing the first magnetic head of the second magnetic head group; the write head device group of the second magnetic head of the first magnetic head group is opposite to the write head device group of the first magnetic head of the second magnetic head group, and correspondingly, the read head device group of the second magnetic head of the first magnetic head group is opposite to the read head device group of the first magnetic head of the second magnetic head group. With this configuration, when the magnetic storage medium moves forward relative to the magnetic head, the first and second magnetic head groups can be used to perform read and write verification of the correspondingly spaced data bands; conversely, when the magnetic storage medium moves backward relative to the magnetic head, the first and second magnetic head groups can also be used to perform read and write verification of the correspondingly spaced data bands. Overall, while effectively improving the efficiency of magnetic head access and the accuracy of data reading and writing, and reasonably controlling the space occupied by the magnetic head, it can also realize bidirectional read and write verification of each data band on the magnetic storage medium side.

[0018] A third aspect of this application provides a magnetic storage device, which includes a housing, a magnetic storage medium, and a head drive module disposed within the housing. The magnetic storage medium includes multiple data bands arranged in parallel, and the head drive module adopts the head drive module described above. Based on the chip architecture of this head, a head drive module that meets basic read and write operations can be constructed using two head wafers of the same specification, effectively reducing the chip fabrication cost and reasonably reducing product design and manufacturing costs.

[0019] Furthermore, the spacing between the read and write head groups of the magnetic head can cover one data band on the magnetic storage medium side, enabling simultaneous access to at least two data bands and reducing the head's travel distance. This effectively improves read / write efficiency and allows for reasonable control of the impact of movement and positioning accuracy on precise data access, thus enhancing data read / write precision. In addition, the head drive module can drive the two heads to move once to read and write two additional data bands spaced apart on the magnetic storage medium side, further reducing the internal space occupied in the thickness direction and effectively improving the space utilization of the magnetic storage device, thereby increasing the storage capacity density in practical scenarios.

[0020] For example, the magnetic storage device is a magnetic tape storage device, which includes two magnetic tape reels, the magnetic storage medium being magnetic tape wound on the magnetic tape reels, and multiple data tapes arranged in parallel in the width direction of the magnetic tape.

[0021] In practical applications, two adjacent data bands may have a gap in the width direction, or two adjacent data bands may have no gap in the width direction.

[0022] Other examples include a magnetic storage device that is a mechanical hard disk, a magnetic storage medium that is a disk, and multiple data strips that are arranged in parallel radially on the disk body.

[0023] A fourth aspect of this application provides an electronic device including a magnetic storage device, wherein the magnetic storage device employs the magnetic storage device described above.

[0024] For example, the electronic device can be an electronic device with storage devices, such as a server, switch, or data center. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a magnetic tape storage device provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 View A in the middle;

[0027] Figure 3 A schematic diagram of a magnetic tape structure provided in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the structure of a magnetic head provided in an embodiment of this application;

[0029] Figure 5(a) shows Figure 4 The diagram shows a possible adaptation relationship between the magnetic head and the magnetic tape.

[0030] Figure 5(b) shows Figure 4 The diagram shows another adaptation relationship between the magnetic head and the magnetic tape.

[0031] Figure 6 for Figure 4 Enlarged view of section C in the image;

[0032] Figure 7 This is a schematic diagram of another magnetic head structure provided in an embodiment of this application;

[0033] Figure 8(a) shows Figure 7 The diagram shows a possible adaptation relationship between the magnetic head and the magnetic tape.

[0034] Figure 8(b) shows Figure 7 The diagram shows another adaptation relationship between the magnetic head and the magnetic tape.

[0035] Figure 9 A schematic diagram illustrating the compatibility between the magnetic head and the magnetic tape of another magnetic tape storage device provided in this application embodiment;

[0036] Figure 10 A schematic diagram illustrating the adaptation relationship between the read / write head and the disk of a mechanical hard disk, provided for an embodiment of this application;

[0037] Figure 11 This is a schematic diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0038] This application provides a chip architecture implementation scheme for a magnetic head. Through structural optimization, the access efficiency of the magnetic head can be effectively improved, while the space occupied by the magnetic head can be reasonably controlled, providing technical support for reducing the space occupied by magnetic storage devices.

[0039] In the field of magnetic storage, storage capacity and read / write efficiency are important indicators characterizing magnetic storage performance. With the rapid development of computing and storage, magnetic storage media have been widely used in the backup storage of electronic data, such as, but not limited to, hard disk drives (HDDs) and magnetic tape disks.

[0040] A head device array is configured on the head chip side, corresponding to a data band on the magnetic storage medium side. Data is read or written by accessing the corresponding track on the data band side through the head device. In related technologies, the magnetic medium layer on the magnetic storage medium side includes multiple parallel data bands, such as multiple turns of data bands arranged on the surface of an HDD disk or multiple data bands arranged on the surface of a magnetic tape.

[0041] Please see Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 This is a schematic diagram of the structure of a magnetic tape storage device provided in an embodiment of this application. Figure 2 for Figure 1 View A in the middle, Figure 3 This is a schematic diagram of the structure of a magnetic tape provided in an embodiment of this application.

[0042] Take magnetic tape storage device 100 as an example. Figure 1 As shown, the magnetic tape storage device 100 includes a housing 50, and two magnetic tape reels 10 and a head drive module 20 disposed within the housing 50. The head drive module 20 includes a base 2 and a head 1 (read / write head) disposed on the base 2. The magnetic tape reel 10 is a rotating disc that rotates under the drive of a drive component (not shown in the figure), driving the magnetic tape 30 coiled and stored on the magnetic tape reel 10 to move forward or backward. The movement trajectory of the magnetic tape can be controlled by a roller 40. For example, but not limited to, clockwise rotation of the two magnetic tape reels 10 can realize the forward movement of the magnetic tape 30, and correspondingly, counterclockwise rotation of the two magnetic tape reels 10 can realize the backward movement of the magnetic tape 30. The tape bearing surface (TBS) on the head 1 side can be coupled to the tape body so that the head 1 can access the data band on the magnetic tape 30.

[0043] In other possible implementations, the two magnetic tape reels 10 can rotate in the same direction to achieve the forward or backward movement of the magnetic tape 30. Of course, the two magnetic tape reels 10 can also rotate in opposite directions to achieve the forward or backward movement of the magnetic tape 30. This application does not limit the implementation.

[0044] The magnetic tape 30 is a strip-shaped magnetic recording medium, comprising a substrate and a magnetic medium layer disposed on the substrate. The magnetic medium layer is a recording layer used to record signals with magnetized patterns. For example... Figure 2 As shown, multiple data tapes are arranged sequentially along the width direction of the magnetic tape 30. For example, the magnetic tape 30 shown in the figure includes four data tapes, data tape 0, data tape 1, data tape 2 and data tape 3 are arranged sequentially along the width direction of the magnetic tape 30.

[0045] In a specific implementation, based on the magnetic medium layer disposed on the substrate, the magnetic tape 30 can be a vertical recording type magnetic recording medium or a longitudinal recording type magnetic recording medium.

[0046] In a typical related technology, during read / write operations, the long, strip-shaped magnetic tape 30 moves longitudinally relative to the magnetic head 1 so that the magnetic head 1 of the head drive module 20 can access the data tapes on the tape 30. Simultaneously, the head drive module 20 can drive the magnetic head 1 to move along the width of the tape, achieving effective access to each data tape (data tape 0, data tape 1, data tape 2, and data tape 3); that is, the magnetic head 1 requires a certain travel distance to sequentially access each data tape. In other words, the head drive module can drive the magnetic head to move along the width of the tape (the direction in which multiple data tapes are arranged in parallel) to achieve access to each data tape.

[0047] In the case where the magnetic head 1 moves to access the magnetic tape in the width direction, the thickness D of the magnetic tape storage device 100 is directly related to the travel distance of the magnetic head 1 in the width direction of the magnetic tape 30. Figure 2 Taking the four data bands shown as an example, the head 1 needs to move three times to complete the access to the four data bands. For example, moving from data band 0 to data band 3 and / or moving from data band 3 to access data band 0. The maximum movement and access stroke includes at least the width of three data bands.

[0048] In other words, the thickness of a magnetic tape storage device is related to the travel distance of the read / write head when accessing each data tape. For N data tapes, the head needs to move N-1 times to access all N data tapes. The head 1 needs to access each data tape sequentially on the tape side (or disk side). This limits the effective improvement of read / write efficiency. Furthermore, the head's travel distance occupies space in the thickness direction within the casing, creating a bottleneck in the miniaturization of magnetic tape storage devices. Consequently, this results in low space utilization and a correspondingly low storage density in application scenarios.

[0049] For HDDs, the movement of the read / write head to access multiple data bands on the disk side (not shown in the figure) also requires configuration to ensure that the travel distance of each data band is sufficient for sequential access.

[0050] Based on this, embodiments of this application provide a magnetic head for accessing multiple data bands of a magnetic storage medium. The magnetic head includes a device layer embedded in an insulating dielectric layer. The device layer includes paired read head device groups and write head device groups, which are spaced apart in a first direction, and the spacing between the read head device groups and write head device groups covers one data band of the magnetic storage medium. Here, "first direction" refers to the direction in which the read head device groups and write head device groups are spaced apart, and this first direction can be consistent with the parallel arrangement direction of the multiple data bands on the magnetic storage medium side. For a magnetic tape wound on a magnetic reel, multiple data bands arranged on the tape surface are arranged in parallel in the tape width direction. For an HDD disk, multiple turns of data bands arranged on the disk surface are arranged in parallel in the disk radial direction.

[0051] This configuration, based on a magnetic head architecture with read and write head groups, enables the reading and writing of two data bands spaced apart on the magnetic storage medium side. Correspondingly, the head drive module can be configured with two magnetic heads, each with its own read and write head group. In the direction of data band movement relative to the heads on the magnetic storage medium side, the write head group of one head is positioned opposite the read head group of the other. Thus, when the magnetic head is coupled with the magnetic storage medium (taking magnetic tape as an example), the tape moves relative to the heads along the reel direction. The read head group of one head and the write head group of the other can be matched to perform read and write operations on one data band. In practical applications, a head drive module satisfying basic read and write operations can be constructed based on two magnetic head wafers of the same specification, effectively reducing chip fabrication costs. Simultaneously, the spacing between the read and write head groups on the head side can cover one data band of the magnetic storage medium, enabling simultaneous access to at least two data bands and reducing the head's travel distance. As a result, read and write efficiency is effectively improved, and the impact of mobile positioning accuracy on accurate data access can be reasonably controlled, thereby improving data read and write accuracy.

[0052] Furthermore, compared to solutions where the magnetic head needs to move to access all data tapes, the embodiments of this application can effectively reduce the movement of the magnetic head. For example, for a magnetic tape with four data tapes, the magnetic head drive module can drive two magnetic heads to move once to read and write the other two data tapes that are spaced apart on the magnetic storage medium side. This can further reduce the space occupied in the thickness direction inside the device, effectively improve the space utilization of the magnetic tape storage device, and provide technical support for further improving the capacity density of storage space in practical scenarios.

[0053] Furthermore, in cases where the write head device group is located in front of the read head device group relative to the direction of tape movement, after the write head device group of one magnetic head completes the data writing, the read head device group of the other magnetic head can read the written data from the tape side, thus achieving a targeted data verification function.

[0054] To better understand the technical solution and effects of this application, specific embodiments are described in detail below with reference to the accompanying drawings. Please refer to... Figure 4 Figures 5(a) and 5(b), wherein, Figure 4 This is a schematic diagram of the structure of a magnetic head provided in an embodiment of this application. Figure 1 The viewpoint formed in the B direction is shown in Figure 5(a). Figure 4 The diagram shows a possible adaptation relationship between the magnetic head and the magnetic tape. Figure 5(b) shows... Figure 4 The diagram shows another adaptation relationship between the magnetic head and the magnetic tape.

[0055] For ease of description, the plane where the magnetic tape contact surface TBS is located is used as the reference plane, and two different extension directions are defined: the first direction X and the second direction Y. In this case, each magnetic head device group of magnetic head 1 is arranged adjacent to each other in the first direction X.

[0056] like Figure 4 As shown, the magnetic head 1 includes an insulating dielectric layer 1a and a device layer 1b. The magnetic head device group (read head device group 11 and write head device group 12) of the device layer 1b is embedded in the insulating dielectric layer 1a. The insulating dielectric layer 1a and the device layer 1b can be stacked on a substrate layer (not shown in the figure), which can be implemented using existing technology, and will not be described in detail here.

[0057] In this embodiment, the device layer 1b of the magnetic head 1 includes a paired read head device group 11 and a write head device group 12. For example, Figure 4 The diagram illustrates a pair of read head device groups 11 and write head device groups 12 as an example. The read head device group 11 and write head device group 12 are spaced apart in the first direction X. The dimensions of the read head device group 11 and write head device group 12 in the first direction X are shown by the dimension mark t. There is a gap t1 between the read head device group 11 and write head device group 12, which covers one data band of the magnetic tape 30 (magnetic storage medium).

[0058] In a specific implementation, the dimension t of the read head device group 11 and the write head device group 12 in the first direction X can be equal to the distance t1 between the read head device group 11 and the write head device group 12; in other specific implementations, the dimension t of the read head device group 11 and the write head device group 12 in the first direction X can also be smaller than the distance t1 between the read head device group 11 and the write head device group 12.

[0059] In this design, the spacing direction (first direction X) of the read head device group 11 and the write head device group 12 of the magnetic head 1 is consistent with the width direction of the data tapes (data tape 0, data tape 1, data tape 2, and data tape 3) of the magnetic tape 30. It should be understood that this consistent spacing direction means that during the movement of the magnetic tape, the read head device group 11 and the write head device group 12 can synchronously access the two data tapes with corresponding spacing. In specific implementations, this includes cases where the sequential arrangement direction of the read head device group 11 and the write head device group 12 of the magnetic head 1 is completely consistent with the tape width direction, and also cases where the sequential arrangement direction of the read head device group 11 and the write head device group 12 of the magnetic head 1 satisfies the positional tolerance requirements of the tape width direction.

[0060] In the first direction X, the center-to-center distance between the read head device group 11 and the write head device group 12 on the side of the magnetic head 1 can be twice the center-to-center distance between the data tapes on the side of the magnetic tape 30, so that the magnetic head devices of the read head device group 11 and the write head device group 12 can perform read and write operations on the tracks of the two data tapes (not shown in the figure) that are separated by one data tape. For example, as shown in Figure 5(a), data tapes 0 and 2 on both sides of data tape 1 can be accessed simultaneously.

[0061] As shown in Figures 5(a) and 5(b), the head drive module can be configured with two... Figure 4 The magnetic head 1 shown in the figure moves relative to the magnetic head 1 in the direction indicated by arrow E when the magnetic head 1 is coupled to the magnetic tape 30. The two magnetic heads 1 are a first magnetic head 1A and a second magnetic head 1B. In the direction in which the data tape of the magnetic tape 30 moves relative to the magnetic head 1, the read head device group 11 of the first magnetic head 1A and the write head device group 12 of the second magnetic head 1B are positioned opposite each other, and correspondingly, the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B are positioned opposite each other. Figure 4 Two head 1 wafers of the specifications shown can be used to construct a head drive module that meets basic read and write operations.

[0062] In the usage state shown in Figure 5(a), the read head device group 11 of the first magnetic head 1A and the write head device group 12 of the second magnetic head 1B correspond to data band 0; the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B correspond to data band 2. In this way, the read and write operations of data band 0 and data band 2, which are spaced apart on the magnetic tape 30 side, are completed by the first magnetic head 1A and the second magnetic head 1B.

[0063] In a specific implementation, the head drive module can drive the two magnetic heads 1 to move to the usage state shown in Figure 5(b). In the usage state shown in Figure 5(b), the read head device group 11 of the first magnetic head 1A and the write head device group 12 of the second magnetic head 1B correspond to data tape 1; the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B correspond to data tape 3. In this way, the read and write operations of data tape 1 and data tape 3, which are spaced apart on the magnetic tape 30 side, are completed by the first magnetic head 1A and the second magnetic head 1B.

[0064] It is certain that, compared with the traditional implementation scheme where the magnetic head needs to move sequentially to the relative positions of each data tape to complete the access of all data tapes, the magnetic head 1 provided in this application embodiment can effectively reduce the movement and access stroke of the magnetic head, thereby avoiding the impact of the magnetic head 1 accessing and positioning multiple times on the magnetic tape, and the reading and writing efficiency and data reading and writing accuracy are effectively improved.

[0065] In addition, based on the reasonable control of the magnetic head movement travel, the space required for the magnetic head movement travel inside the housing 50 is reduced, which can further reduce the space occupied by the magnetic tape storage device, effectively improve the space utilization of the magnetic tape storage device, and thus increase the capacity density of the storage space in actual scenarios.

[0066] In a specific implementation, the read head device group 11 and the write head device group 12 may include multiple magnetic head devices 111. The read head device group 11 is used to convert electrical signals into magnetic signals and write them to the magnetic storage medium on the magnetic tape side, thus realizing data writing. The write head device group 12 is used to convert magnetic signals on the magnetic storage medium into electrical signals, thus realizing data reading. It should be understood that the specific implementation of the magnetic head devices 111 can be achieved using existing technologies; this illustration only shows the device configuration relationship of one of them. Please refer to [further details omitted]. Figure 6 The image is Figure 4 The enlarged view of section C is shown. For the read head device group 11 and the write head device group 12, the number of magnetic head devices 111 can be consistent with the number of tracks of the corresponding data tape, and they are arranged at intervals in the first direction X to form an array of magnetic head devices 111. It can be understood that the air gap opening (not shown in the figure) of each magnetic head device 111 is located at the magnetic tape contact surface TBS.

[0067] For example, but not limited to, the read head device group 11 and the write head device group 12 may each include thirty-two magnetic head devices 111, corresponding to the magnetic tracks of the data tape on the magnetic tape side 30 to realize thirty-two channels of data reading and writing. In other possible implementation schemes, the number of magnetic head devices 111 included in the read head device group 11 and the write head device group 12 can be determined according to the overall product design requirements, and this application embodiment does not limit it.

[0068] Furthermore, the read head device group 11 and the write head device group 12 may also include two servo read heads 112, which are located at both ends of the magnetic head device 111 array, that is, at both ends of the magnetic head device group 11 in the first direction X. Similarly, the air gap opening (not shown in the figure) of each servo read head 112 is located on the magnetic tape contact surface TBS. The servo read head 112 is used to read the servo information in the servo track on the magnetic tape 30 to achieve precise positioning of the magnetic head 1. Here, the servo information stored in the servo track may include, but is not limited to, synchronization markers, track numbers, position error signals (PES), etc., which can be determined according to the overall architecture design of the magnetic storage device. This application embodiment does not limit this.

[0069] In a specific implementation, the width of the data tape of the magnetic tape 30 is as indicated by the dimension mark d. In a specific implementation, the dimension t of the read head device group 11 and the write head device group 12 in the first direction X can be consistent with the width d of the data tape. For example, but not limited to, the dimension t of the read head device group 11 and the write head device group 12 and the width d of the data tape can both be 2.85 mm. It is understood that, in possible implementations, due to limitations in the magnetic tape manufacturing process, the width of the data tape can also be slightly greater than 2.85 mm or slightly less than 2.85 mm. Thus, for the read head device group 11 and the write head device group 12, the corresponding two servo read heads 112 are matched with the architecture on the magnetic tape 30 side. The servo read heads 112 read information from the servo track, generate a position error signal, and feed it back to the control system to accurately respond to the position of the magnetic head device 111 array.

[0070] In practical applications, the dimensions t corresponding to the magnetic head assembly 11 and the width d of the data tape are 2.85 mm. There are gaps between the four data tapes, and the magnetic tape 30 has edges on both sides. The width of the magnetic tape 30 is 2.85 mm × 4 + the width of the edges + the width of the gaps. For example, but not limited to, if the width of each gap is 0.25 mm and the width of each edge is 0.25 mm, then the width of the magnetic tape 30 can be 2.85 mm × 4 + 0.25 mm × 3 + 0.25 mm × 2 = 12.65 mm. Correspondingly, the dimension of the magnetic head 1 in the first direction X can be 22.65 mm, which is less than the thickness of a 3.5-inch disk (27 mm). This meets the application requirements of a 3.5-inch disk.

[0071] It should be noted that the dimensions of the data tape and magnetic head assembly described above are merely examples provided in the embodiments of this application and should not be construed as limitations on the magnetic head and magnetic tape storage device provided in this application. For example, if there are no gaps between the four parallel data tapes and the edge of the magnetic tape 30 has no redundant width, then the width of the magnetic tape 30 is 2.85mm × 4 = 11.4mm. The specific dimensions can be determined according to the overall product design requirements, as long as the above functional requirements are met; this application embodiment does not impose any limitations.

[0072] The magnetic head 1 described in the foregoing embodiments includes a pair of read head device groups 11 and a write head device group 12. In other specific implementations, the magnetic head 1 may include multiple pairs of read head device groups 11 and write head device groups 12. Please refer to [the previous examples]. Figure 7 Figures 8(a) and 8(b), wherein, Figure 7 Figure 8(a) is a schematic diagram of another magnetic head structure provided in the embodiments of this application. Figure 7 The diagram shows a possible adaptation relationship between the magnetic head and the magnetic tape. Figure 8(b) shows... Figure 7 The diagram shows another possible adaptation relationship between the magnetic head and the magnetic tape. To clearly illustrate the differences and connections between this embodiment and the aforementioned embodiments, identical components or structures are indicated by the same reference numerals in the diagram.

[0073] and Figure 4 Compared to the described magnetic head, the difference in this embodiment is that the device layer of the magnetic head 1 includes two pairs of read head device groups 11 and write head device groups 12: a first read head device group 11-1, a first write head device group 12-1, a second read head device group 11-2, and a second write head device group 12-2. In the first direction X, the first read head device group 11-1, the first write head device group 12-1, the second read head device group 11-2, and the second write head device group 12-2 are arranged sequentially at intervals, that is, adjacent pairs of read head device groups 11 and write head device groups 12 are arranged at intervals in the first direction, and the spacing between the two pairs of read head device groups 11 and write head device groups 12 also covers a data band.

[0074] Similarly, in the first direction X, the center spacing between adjacent read head device group 11 and write head device group 12 on the side of magnetic head 1 can be twice the center spacing of the data tape on the side of magnetic tape 30, so that the magnetic head devices of read head device group 11 and write head device group 12 can perform read and write operations corresponding to the tracks of four data tapes (not shown in the figure) with one data tape spaced apart in the middle. Figure 7 The described magnetic head 1 is applicable to a magnetic tape 30 with eight data tapes. For example, as shown in Figure 8(a), data tapes 0, 2, 4, and 6 on both sides of data tape 1 can be accessed simultaneously. Based on... Figure 7Two magnetic head 1 wafers of the specifications shown can be used to construct a magnetic head drive module that meets basic read and write operations. The two magnetic heads 1 are the first magnetic head 1A and the second magnetic head 1B.

[0075] As shown in Figures 8(a) and 8(b), the head drive module can be configured with two... Figure 7 The magnetic head 1 shown in the figure moves relative to the magnetic head 1 in the direction indicated by arrow E when the magnetic head 1 is coupled to the magnetic tape 30. In the direction in which the data tape of the magnetic tape 30 moves relative to the magnetic head 1, the two read head device groups 11 of the first magnetic head 1A and the two write head device groups 12 of the second magnetic head 1B are respectively arranged opposite to each other, and correspondingly, the two write head device groups 12 of the first magnetic head 1A and the two read head device groups 11 of the second magnetic head 1B are respectively arranged opposite to each other.

[0076] In the usage state shown in Figure 8(a), the read head device group 11 of the first magnetic head 1A and the write head device group 12 of the second magnetic head 1B, which are arranged opposite to each other, correspond to data tape 0 and data tape 4, respectively; the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B, which are arranged opposite to each other, correspond to data tape 2 and data tape 6, respectively. In this way, the first magnetic head 1A and the second magnetic head 1B complete the read and write operations on data tapes 0, 2, 4 and 6, which are spaced apart on the magnetic tape 30 side.

[0077] In a specific implementation, the head drive module can drive the two magnetic heads 1 to move to the usage state shown in Figure 8(b). In the usage state shown in Figure 8(b), the read head device group 11 of the first magnetic head 1A and the write head device group 12 of the second magnetic head 1B, which are arranged opposite to each other, correspond to data tape 1 and data tape 5, respectively; the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B, which are arranged opposite to each other, correspond to data tape 3 and data tape 7, respectively. In this way, the first magnetic head 1A and the second magnetic head 1B complete the read and write operations on data tape 1, data tape 3, data tape 5 and data tape 7, which are spaced apart on the magnetic tape 30 side.

[0078] Of course, in other possible implementations, the number of read head device groups 11 and write head device groups 12 arranged in pairs on the magnetic head 1 side can be 1 / 4 of the number of data tapes on the magnetic tape 30 side. That is, for a magnetic storage medium side with N parallel data tapes, the magnetic head 1 can be provided with N / 4 pairs of read head device groups 11 and write head device groups 12. The specific arrangement can be determined according to the overall product design requirements, and this application embodiment does not limit it.

[0079] The specific implementation of other functional components can be combined with Figure 4 The implementation methods described are consistent. Therefore, they will not be repeated here.

[0080] The magnetic head 1 described in the foregoing embodiments can be applied to different types of magnetic storage devices. For example... Figure 1 As shown, the magnetic head drive module 20 of the magnetic tape storage device 100 can adopt the aforementioned Figure 4 or Figure 7 The described magnetic head 1. In a specific implementation, the magnetic head 1 can be fixed by a support component. Based on the chip architecture of this magnetic head, a magnetic head drive module 20 that meets basic read and write operations can be constructed using two magnetic head 1 wafers of the same specification, effectively reducing the chip fabrication cost and reasonably reducing product design and manufacturing costs.

[0081] In practical applications, the spacing between the read head device group 11 and the write head device group 12 of the magnetic head 1 can cover one data band on the magnetic tape side, thereby enabling simultaneous access to at least two data bands and reducing the travel distance of the magnetic head. This effectively improves read and write efficiency and allows for reasonable control of the impact of movement positioning accuracy on precise data access, thus enhancing data read and write precision. Furthermore, the magnetic head drive module 20 can drive the two magnetic heads 1 to move once, enabling the reading and writing of two additional data bands spaced apart on the magnetic tape 30 side. This further reduces the space occupied in the thickness direction within the device, effectively improving the space utilization of the magnetic tape storage device and increasing the storage capacity density in practical scenarios.

[0082] In a specific implementation, when the write head device group 12 of magnetic head 1 is located in front of the read head device group 11 relative to the direction of magnetic tape movement, after the write head device group 12 of one magnetic head 1 completes the data writing, the read head device group 11 of the other magnetic head 1 can read the written data from the magnetic tape side. By comparing the consistency between the written data and the read data, the accuracy of the writing operation is verified, and the data verification function is implemented in a targeted manner.

[0083] It should be understood that the other functional components of the aforementioned magnetic tape storage device can be implemented using existing technologies, and therefore will not be elaborated upon here.

[0084] The magnetic head drive module 20 described in the foregoing embodiments is configured with two magnetic heads 1. The read head device group 11 and write head device group 12 of the two magnetic heads 1 are arranged alternately in the first direction X. Reading and writing operations on a data tape are achieved through the mutual matching of the read head device group 11 of one magnetic head 1 and the write head device group 12 of the other magnetic head 1. The two magnetic heads 1 with the alternately arranged read head device group 11 and write head device group 12 constitute a magnetic head group. In order to realize bidirectional read and write verification of magnetic tape, in a specific implementation, two groups of magnetic heads 1 with the alternately arranged read head device group 11 and write head device group 12 can be set. Please refer to Figure 9 This figure is a schematic diagram illustrating the adaptation relationship between the magnetic head and the magnetic tape of another magnetic tape storage device provided in this application embodiment. To clearly show the differences and connections between this embodiment and the foregoing embodiments, identical components or structures are indicated by the same reference numerals in the figure.

[0085] Compared with the adaptation relationships described in Figures 5(a), 5(b), 8(a), and 8(b), the difference in this embodiment is that: the magnetic head drive module includes two sets of magnetic heads 1. In the second direction Y, the first magnetic head group I and the second magnetic head group II are arranged at intervals, and the second magnetic head 1B of the first magnetic head group I is arranged facing the first magnetic head 1A of the second magnetic head group II; the write head device group 12 of the second magnetic head 1B of the first magnetic head group I is arranged opposite to the write head device group 12 of the first magnetic head 1A of the second magnetic head group II, and correspondingly, the read head device group 11 of the second magnetic head 1B of the first magnetic head group I is arranged opposite to the read head device group 11 of the first magnetic head 1A of the second magnetic head group II.

[0086] With this configuration, when the magnetic tape 30 moves relative to the magnetic head 1 in the direction indicated by arrow E in the figure, the read and write verification of data tape 2 can be achieved through the first magnetic head group I (the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B), and the read and write verification of data tape 0 can be achieved through the second magnetic head group II (the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B). Conversely, when the magnetic tape 30 moves relative to the magnetic head 1 in the opposite direction indicated by arrow E in the figure, the read and write verification of data tape 0 can be achieved through the first magnetic head group I (the write head device group 12 of the second magnetic head 1B and the read head device group 11 of the first magnetic head 1A), and the read and write verification of data tape 2 can be achieved through the second magnetic head group II (the write head device group 12 of the second magnetic head 1B and the read head device group 11 of the first magnetic head 1A).

[0087] Similarly, when the head drive module drives the two sets of heads 1 to move to data band 1 and data band 3, it can also realize bidirectional read and write verification of data band 1 and data band 3.

[0088] The specific implementation of other functional components can be consistent with the implementation methods described in the foregoing embodiments. Further details will not be provided here.

[0089] In addition to the magnetic tape storage device 100, the magnetic head 1 described in the foregoing embodiments can also be applied to an HDD. See also... Figure 10 This figure is a schematic diagram illustrating the adaptation relationship between the read / write head and the disk of a mechanical hard disk according to an embodiment of this application. To clearly show the differences and connections between this embodiment and the foregoing embodiments, identical components or structures are indicated by the same reference numerals in the figure.

[0090] like Figure 10As shown, the HDD includes a housing (not shown), a disk 30' and a head drive module disposed within the housing, the head drive module employing the previously described head 1. Four data bands (data band 0, data band 1, data band 2, and data band 3) are arranged on the surface of the disk 30', and are arranged in parallel in the radial direction of the disk body. Exemplarily, a set of heads 1 is used to illustrate the adaptation relationship with the data bands on the disk 30' side.

[0091] Accordingly, the arrangement direction of the spaced read head device group 11 and write head device group 12 of the magnetic head 1 is consistent with the radial direction of each data band on the disk side. It should be understood that this consistent arrangement direction means that during disk rotation, the read head device group 11 and write head device group 12 of the first magnetic head 1A and the second magnetic head 1B can synchronously access the two spaced data bands. In specific implementations, this includes cases where the spaced arrangement direction of the read head device group 11 and write head device group 12 of the magnetic head 1 is completely consistent with the disk radial direction, and also cases where the spaced arrangement direction of the read head device group 11 and write head device group 12 of the magnetic head 1 has positional tolerance requirements that satisfy the aforementioned functional needs.

[0092] When the read / write head 1 is coupled to the disk 30', the disk 30' moves relative to the read / write head 1 in the direction shown by arrow E' in the figure. The read head device group 11 of the first read / write head 1A is positioned opposite to the write head device group 12 of the second read / write head 1B, and correspondingly, the write head device group 12 of the first read / write head 1A is positioned opposite to the read head device group 11 of the second read / write head 1B. Based on two read / write head 1 wafers of the same specification, a read / write head drive module that meets basic read / write operations can be constructed.

[0093] exist Figure 10 In the shown operating state, the read head device group 11 of the first magnetic head 1A and the write head device group 12 of the second magnetic head 1B correspond to data band 0; the write head device group 12 of the first magnetic head 1A and the read head device group 11 of the second magnetic head 1B correspond to data band 2. In this way, the read and write operations of data band 0 and data band 2, which are spaced apart on the magnetic tape 30 side, are completed by the first magnetic head 1A and the second magnetic head 1B.

[0094] Similarly, when the head drive module drives the two sets of heads 1 to move to data band 1 and data band 3, it can perform read and write operations on data band 1 and data band 3.

[0095] In practical applications, the spacing between the read head assembly 11 and the write head assembly 12 of the magnetic head 1 can cover one data band on the disk 30' side, thereby enabling simultaneous access to at least two data bands and reducing the head's travel distance. This effectively improves read / write efficiency and allows for reasonable control of the impact of movement and positioning accuracy on precise data access, thus enhancing data read / write precision. Furthermore, the head drive module 20 drives the two heads 1 to move once, enabling the reading and writing of two additional data bands spaced apart on the disk 30' side. This further reduces the internal space occupied in the thickness direction, effectively improving the space utilization of the disk storage device and increasing the storage capacity density in real-world scenarios.

[0096] It is understandable that the data band on the disk side and the head device assembly on the head 1 side... Figure 10 The configuration numbers shown are merely an application example, and the specific number can be determined based on the overall product design requirements. This application does not impose any limitations on the embodiments described.

[0097] It should be understood that the other functional components of the HDD mentioned above can be implemented using existing technologies, so they will not be elaborated upon in this article.

[0098] The magnetic head structure implementation schemes described in the foregoing embodiments can be widely applied to various electronic devices, including but not limited to servers, switches, and data centers, which are electronic devices with storage devices. Please refer to... Figure 11 This figure is a schematic diagram of an electronic device provided in an embodiment of this application. The cabinet or housing 200 of the electronic device 1000 is equipped with a magnetic storage device, which includes the magnetic tape storage device 100 as described above and / or the HDD as described above. Based on the head structure provided in this embodiment, access to all data tapes can be achieved without head movement, avoiding the influence of the head on the data tape access positioning on the magnetic storage medium side, effectively improving read / write efficiency. Furthermore, it avoids the impact of movement positioning accuracy on precise data access, improving data read / write accuracy; simultaneously, the ability to access all data tapes without head movement further simplifies the head positioning algorithm and functional structure, exhibiting good designability. In addition, applying the magnetic storage device provided in this embodiment can effectively reduce the space occupied by the head, increasing the storage capacity density in practical scenarios.

[0099] For example, this electronic device can be a magnetic storage device for data storage applications such as data centers, backup, and archiving, primarily used for processing cold data with low access frequency. The magnetic storage device includes a head drive module, a magnetic tape drive, a magnetic storage medium library, and a control unit. The head drive module has magnetic heads for performing write and read operations, the magnetic storage medium library stores the magnetic storage device, and the magnetic tape drive, under the command of the control unit, can be used to move the magnetic storage medium and transfer the magnetic storage device.

[0100] It should be understood that the other functional components of the aforementioned electronic device can be implemented using existing technologies, and therefore will not be elaborated upon here.

[0101] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A magnetic head for adaptation to a magnetic storage medium, characterized in that, The magnetic head includes an insulating dielectric layer and a device layer embedded in the insulating dielectric layer. The device layer includes a pair of read head device groups and a write head device group, which are spaced apart in a first direction, and the spacing between the read head device group and the write head device group can cover a data band of the magnetic storage medium.

2. The magnetic head according to claim 1, characterized in that, The read head device group and the write head device group are configured as a pair.

3. The magnetic head according to claim 1, characterized in that, The read head device group and the write head device group are configured in pairs, and multiple pairs are configured.

4. The magnetic head according to any one of claims 1 to 3, characterized in that, Both the read head device group and the write head device group include multiple magnetic head devices, which are spaced apart in a first direction to form a magnetic head device array.

5. The magnetic head according to claim 4, characterized in that, Both the read head device group and the write head device group include two servo read heads, which are located on both sides of the magnetic head device array in the first direction.

6. The magnetic head according to claim 4, characterized in that, The head device group comprises thirty-two head devices.

7. A magnetic head drive module, characterized in that, It includes a base and a magnetic head disposed on the base, wherein the magnetic head is the magnetic head according to any one of claims 1 to 6.

8. The magnetic head drive module according to claim 7, characterized in that, The device includes two magnetic heads configured in a group, namely a first magnetic head and a second magnetic head arranged at a distance. In a second direction, the read head device group of the first magnetic head and the write head device group of the second magnetic head are arranged opposite to each other, and the read head device group of the second magnetic head and the write head device group of the first magnetic head are arranged opposite to each other. The second direction intersects with the first direction.

9. The magnetic head drive module according to claim 8, characterized in that, The device includes two sets of magnetic heads configured in groups, namely a first magnetic head group and a second magnetic head group; in a second direction, the first magnetic head group and the second magnetic head group are spaced apart, and the second magnetic head of the first magnetic head group is positioned facing the first magnetic head of the second magnetic head group; the write head device group of the second magnetic head of the first magnetic head group is opposite to the write head device group of the first magnetic head of the second magnetic head group, and correspondingly, the read head device group of the second magnetic head of the first magnetic head group is opposite to the read head device group of the first magnetic head of the second magnetic head group.

10. A magnetic storage device, characterized in that, The magnetic storage device includes a housing, a magnetic storage medium and a magnetic head drive module disposed within the housing, the magnetic storage medium including a plurality of data bands arranged in parallel, and the magnetic head drive module employing any one of claims 7 to 9.

11. The magnetic storage device according to claim 10, characterized in that, The magnetic storage device is a magnetic tape storage device, which includes two magnetic tape reels. The magnetic storage medium is a magnetic tape wound on the magnetic tape reels, and multiple data tapes are arranged in parallel along the width direction of the magnetic tape.

12. The magnetic storage device according to claim 11, characterized in that, The two adjacent data bands have a gap in the width direction.

13. The magnetic storage device according to claim 11, characterized in that, There is no gap between two adjacent data bands in the width direction.

14. The magnetic storage device according to claim 10, characterized in that, The magnetic storage device is a mechanical hard disk, the magnetic storage medium is a disk, and multiple data bands are arranged in parallel radially on the disk body.

15. An electronic device, characterized in that, The electronic device includes a magnetic storage device, wherein the magnetic storage device is the magnetic storage device according to any one of claims 10 to 14.

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