581 results about "Magnetic tape" patented technology

The invention discloses an LDPC (Low Density Parity Check) coding and decoding system and method for high-density tape storage, and the system comprises a main controller which is used for scheduling coding and decoding mode switching and module cooperative control; the storage and calculation integrated array is used for executing zero-carrying storage calculation; the ping-pong buffer framework is composed of an input buffer module Buffer A and an output buffer module Buffer B; the dynamic code length extension module is used for reconstructing a cascade link; the preprocessing module is used for converting the noisy code word into a log likelihood ratio (LLR) value; the hard decision module is used for converting the VN message into user data; the main controller is connected with all the modules through a control bus, and the dynamic code length extension module controls the power state and interconnection topology of the sub-arrays. According to the LDPC coding and decoding system and method based on the storage and calculation integrated array, zero-carrying calculation is achieved, iterative decoding is accelerated through a ping-pong buffer architecture, and the code length is flexibly configured through the dynamic code length extension module, the coding and decoding efficiency of high-density tape storage is improved, delay and energy consumption are reduced, meanwhile, multi-code-length self-adaption is supported, and high performance and flexibility are considered.

Systems, methods, and instrumentalities are disclosed for retrieving information from tapes. The first group of read elements may be positioned adjacent to the first track and the second group of read element may be adjacent to the second track. In some embodiments, the system may include a second read sensor. Multiple readings of the electromagnetic fields generated by the first track may be collected using multiple read elements of the first group, A composite interpretation of a set of data encoded on the first track may be generated based on the multiple readings of the electromagnetic fields generated by the first track that are collected by the multiple read elements of the first group.

A main object of the present technology is to improve the reliability of a magnetic recording tape by controlling the distribution of the binder in the underlayer.The present technology provides a magnetic recording medium including a magnetic layer, an underlayer, and a base layer in this order, the underlayer containing a chlorine-containing binder, the underlayer including a part having a thickness of 130 nm or less, the part having a chlorine count equal to or more than a threshold described below:[T⁢hreshold]=[⁠an⁢ average⁢ chlorine⁢ count⁢ in⁢ the⁢ underlayer]+6×[a⁢ standard⁢ deviation⁢ determined⁢ in⁢ calculation⁢ of⁢ the⁢ average⁢ chlorine⁢ count].Furthermore, the present technology also provides a magnetic recording medium including a magnetic layer, an underlayer, and a base layer in this order, the underlayer containing a chlorine-containing binder, the underlayer including a part having a thickness of 12% or less of a thickness of the underlayer, the part having a chlorine count equal to or more than the above-described threshold.

A communications panel includes a chassis receiving one or more tray arrangements that each support one or more cassettes. Each cassette carries a plurality of ports at which connections are made between front and rear plug connectors. Each tray arrangement includes guides along which the cassettes slidably mount. The guides and cassettes are configured to enable cassettes of various size to mount to the same tray without reconfiguring the guides.

A plurality of servo patterns are recorded in a magnetic tape along a longitudinal direction. The servo pattern is at least one linear magnetization region pair. The linear magnetization region pair includes a first linear magnetization region, which is linearly magnetized, and a second linear magnetization region, which is linearly magnetized. The first linear magnetization region and the second linear magnetization region are inclined in opposite directions with respect to a first imaginary straight line along a width direction of the magnetic tape. The first linear magnetization region has a steeper inclined angle with respect to the first imaginary straight line than the second linear magnetization region.

A first servo pattern has a first position and a second position which intersect an imaginary line. A second servo pattern has a third position intersecting the imaginary line. The imaginary line is set at a position at which a relationship in which a distance between the first position and the second position is half of a distance between the first position and the third position is established between the first servo pattern and the second servo pattern adjacent to each other in a longitudinal direction. A width of a servo band is set to a length in which a distance from the imaginary line to one end of the servo band in a width direction and a distance from the imaginary line to the other end of the servo band in the width direction are equal.

A head driving device includes an actuator assembly driving a head member in a width direction of tape. The head driving device includes a first end support beam, a second end support beam, a first skew driving piezoelectric unit, and a second skew driving piezoelectric unit. The first end support beam is arranged between a first end portion of the head member in a length direction and a base member. The second end support beam is arranged between a second end portion of the head member in the length direction and the base member. The first skew driving piezoelectric unit and the second skew driving piezoelectric unit drive the head member around the Z-axis.

To prevent degradation of service to users by analyzing reading errors of an absolute positioning system that detects absolute positions.SOLUTION: An elevator system includes an APS tape on which absolute position information is continuously set corresponding to the position of the car in the direction of movement within the elevator shaft, an APS sensor installed on the car and equipped with two cameras that read absolute position information corresponding to the car's position, and an information processing device that processes the absolute position information read by the APS sensor. The two cameras are positioned so that the reading positions of the absolute position information are separated by an offset distance in the direction of movement. The information processing device includes a recording processing unit that records error information including the error position when a reading error occurs in each of the two cameras, and a compilation processing unit that compiles compilation data that associates the error position with the number of errors based on the recorded error information.SELECTED DRAWING: Figure 8

The embodiment of the invention discloses a magnetic separation chip for cell separation and a preparation method thereof.The magnetic separation chip structurally comprises a sample layer, a functional layer, a clamp set and a magnetic field source, the sample layer is composed of a flow channel layer and a sealing film, and the flow channel layer is provided with a sheath fluid inlet, a sample inlet and a sample outlet; the sealing film is attached to the open surface of the runner layer to seal the runner; the functional layer is located below the sample layer and comprises a patterned substrate and an amorphous alloy soft magnetic strip material, the patterned substrate is provided with a counter bore groove, the amorphous alloy soft magnetic strip material is embedded into the counter bore groove, and the upper surface of the amorphous alloy soft magnetic strip material is flush with the upper surface of the substrate, right faces the sealing film and is arranged in the extending direction of the flow channel; the clamp group comprises an upper clamping plate and a lower clamping plate, the upper clamping plate is arranged above the sample layer, the lower clamping plate is arranged below the functional layer, the upper clamping plate is provided with runner holes corresponding to the inlets and the outlets, and the two are connected through bolts to clamp and fix the sample layer and the functional layer; the magnetic field source is arranged at the end where the sample outlet is located and on one side opposite to the functional layer, so that a gradient magnetic field which is gradually enhanced from the inlet to the outlet is formed in the flow channel.

The utility model discloses fan dispensing inspection and magnetic ring assembly equipment which comprises a control module and a lower rack, the pushing mechanism, the dispensing mechanism, the visual camera inspection mechanism, the module carrying mechanism, the grabbing and moving mechanism, the tape clip automatic push-out mechanism, the automatic tape winding mechanism, the tape assembling and pressing mechanism, the discharging mechanism and the control module are in circuit connection with the control module. The visual camera inspection mechanism is used for detecting the dispensing condition and feeding back the dispensing condition to the control module, so that the production efficiency is greatly improved and the reject ratio is reduced; the equipment adopts an automatic assembly operation mode, so that the assembly precision is greatly improved, the dynamic balance is very stable, the noise of the cooling fan in the rotating process is reduced, and the service life is also greatly prolonged; by replacing the positioning carriers of the products, the products of various specifications can be compatible at the same time, and the products are convenient and fast to replace and produce; the labor is reduced, the yield is increased, and the product quality is improved.

The embodiment of the invention provides a storage system, a data storage method and a storage device, the storage device in the storage system comprises a tape reel, and the deployment cost of the storage system can be reduced. A storage system includes a source storage device to store production data; the backup storage device is used for storing copy data of the production data; wherein the backup storage device comprises a tape reel, the tape reel comprises a plurality of continuous physical storage spaces, any physical storage space in the plurality of continuous physical storage spaces comprises a first space and a second space, the first space is used for storing the copy data, and the second space is a reserved space OP.

Systems and methods are disclosed for retrieving information from legacy storage media with high fidelity and minimal contact. A read sensor with multiple read elements detects electromagnetic fields from tracks on a storage medium. Readings from different elements are combined to generate a composite interpretation, which can be used to, for example, generate digitized waveforms and determine if portions of tracks are damaged.

The embodiment of the invention provides a magnetic tape, a driver, a magnetic tape system and electronic equipment, and aims to avoid failure of the whole magnetic tape system due to breakage of the magnetic tape in the magnetic tape system. The magnetic tape system comprises a magnetic tape, a read-write magnetic head, a page extractor and a controller, the magnetic tape comprises a plurality of storage pages which are arranged in a stacked mode, and in the read-write process of the magnetic tape, the controller can determine at least one target storage page from the storage pages. And then the controller can control the page fetcher to fetch the target storage page and control the read-write magnetic head to read data in the target storage page or write the data into the target storage page. The data is stored in the multiple storage pages, in the working process, the page taking device makes contact with the target storage page so as to take out the target storage page, compared with the mode that a magnetic tape is wound on a reel, the stress of the storage pages is small, and therefore the situation that the magnetic tape in a magnetic tape system breaks, and consequently the whole magnetic tape system fails is avoided.

The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, in which the number of recesses existing on a surface of the magnetic layer and having an equivalent circle diameter of 0.25 μm or more and 0.55 μm or less is 10 or more and 500 or less per an area of 40 μm×40 μm, and standard deviation a of the number of the recesses in a width direction of the surface of the magnetic layer is 50 or less.

The magnetic head comprises a recording module in which a plurality of recording elements are provided, and a reproducing module in which a plurality of reproducing elements are provided. The recording module and the reproducing module are disposed along a longitudinal direction of the magnetic tape. A pair of first servo reading elements of the recording module and a pair of second servo reading elements of the reproducing module are shifted from each other by a predetermined difference along one direction in the width direction of the magnetic tape. The predetermined difference is defined based on a pitch between a plurality of tracks formed using an SMR method and a length of the recording element in the width direction of the magnetic tape.

Provided is a magnetic tape having a non-magnetic support and a magnetic layer containing a ferromagnetic powder, wherein the protrusion height Spk defined in ISO 25178 is 1.2 to 2.8 nm inclusive, said protrusion height Spk being measured in a measurement region of 5 × 5 μm on the surface of the magnetic layer after 500 cycles of back and forth sliding with respect to an LTO8 head at a head inclination angle of 15° at a temperature of 15°C and a relative humidity of 80%.

Provided is a magnetic tape apparatus. In a case where a maximum value of an absolute value of a difference between a servo band interval obtained before the following storage and a servo band interval obtained after the storage of N cycles, in which a predetermined storage is set as one cycle, is denoted by A, and a medium life is equal to or longer than 5 years, which is calculated by a linear function of A and a logarithm loge T of T derived from a value of A and a value of the logarithm loge T of a total storage time T of the storage of the N cycles, each of which is obtained by setting N as 1, 2, 3, 4, or 5. The medium life is T, in a case where A satisfies Expression a: A=1.5−B+C.

The invention discloses storage equipment and a storage system, and relates to the technical field of magnetic tapes. The magnetic tape in the magnetic tape medium memory is accessed by the magnetic head driver in the magnetic tape medium memory, and the magnetic head driver in the magnetic tape medium memory is not used for accessing the magnetic head drivers in other magnetic tape medium memories, namely, the shared part in the storage equipment does not comprise the mechanical structure of the magnetic head driver. The problem that the storage device breaks down due to unreliable mechanical parts is reduced, and the service stability in the storage device is improved. The data processing assembly is connected with different tape medium memories through a plurality of data channels, and the plurality of tape medium memories share the data processing assembly, that is, shared parts in the storage equipment do not comprise mechanical parts, and the mechanical parts of the magnetic head driver do not need to be moved for multiple times, so that the reliability of the mechanical parts in the storage equipment is improved, and the reliability of the storage equipment is improved. And the service stability in the storage equipment can be further improved.

The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, in which a contact angle with 1-bromonaphthalene, which is measured on a surface of the magnetic layer, is 45.0° or more and 55.0° or less, and standard deviation σ of the contact angle in a width direction of the surface of the magnetic layer is 1.0° or less.

The invention discloses a storage and calculation integrated architecture-based convolutional code parallel pipeline decoding acceleration system and method, and the system comprises a global data scheduling module which is used for slicing convolutional code data from magnetic tape storage equipment according to a set rule and carrying out the scheduling through a multi-stage cache mechanism; the storage and calculation integrated unit array is used for storing data tiles and intermediate results output by the global data scheduling module and executing convolution operation, path metric calculation and survival path selection through a reconfigurable calculation unit; the parallel pipeline controller is used for dynamically distributing decoding tasks and controlling the pipeline rhythm of the storage and calculation integrated unit array; the self-adaptive resource configuration module is used for monitoring system load in real time and dynamically adjusting a data distribution strategy and computing resource scheduling; the verification and error correction unit is used for performing verification and error correction on the decoding result output by the storage and calculation integrated unit array and then outputting the decoding result; according to the decoding acceleration system and method, high-efficiency and low-delay convolutional code decoding is realized.

A method for producing a tape-wound toroidal core includes: ⋅providing a soft-magnetic tape on two tape reels, ⋅unwinding the tape and winding the tape onto two winding mandrels to form a multilayer first tape roll, wherein, after in each case several layers, a separating plate is inserted into the first tape rolls that have formed, ⋅reducing the distance between the winding mandrels until the first tape rolls touch each other, ⋅unwinding the tape and winding up the tape to form a multilayer second tape roll, which wraps around the first tape rolls, by rotating the winding mandrels about a common second rotation axis, ⋅severing the tape rolls in steps to form a plurality of tape sections, ⋅picking up at least one reel and placing the reel onto the tape sections, ⋅reshaping free ends of the tape sections and connecting the ends of the tape sections to form a closed ring.

The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder. A rate of change in an area ratio of a protrusion having a height of 5 nm or more and 10 nm or less, which is obtained by measuring a measurement region of 5 μm×5 μm on a surface of the magnetic layer before and after 1000 reciprocating slides with respect to an LTO 8 head at a head tilt angle of 15° in an environment of a temperature of 35° C. and a relative humidity of 80%, with an atomic force microscope, is 10.0% or less.

The objective is to provide a component mounting device, tape feeder, and cassette that can be made more compact. [Solution] The tape feeder 22 has a transport path 32 having an inlet and an outlet, and a tape transport section which, when a carrier tape CT containing parts BH is inserted into the inlet, transports it along the transport path 32 and supplies the parts BH to a parts removal position 22K in the middle of the transport path 32. The mounting head 13 picks up the parts BH from the parts removal position 22K and mounts them on the substrate KB. The cassette 23 has a storage section 55 for storing the carrier tape CT and a tape tip holding section 60 for holding the leading edge of the carrier tape CT stored in the storage section 55. The tape feeder 22 also has a cassette mounting section 39 for mounting the cassette 23.

1. The name of the design product: magnetic tape player (F-023). 2. The use of the design product: a player for playing magnetic tapes. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The invention discloses a high-integration-level multi-valued tape reading SOC chip architecture and a tape reading method, and the architecture comprises a multi-valued reading module which is used for converting a multi-valued coding analog signal in a tape into a digital signal; the data error correction module is used for detecting and repairing data errors through an error correction algorithm; the data compression module is used for performing compression processing on the data subjected to error correction so as to reduce storage space occupation; the data encryption module is used for encrypting the compressed data based on an encryption algorithm; the interface module is used for transmitting the processed data to external equipment; and the dynamic voltage frequency adjusting module is used for dynamically adjusting the voltage and frequency of the core module according to the system load to reduce the power consumption. According to the invention, high-efficiency signal acquisition, conversion and processing can be realized while high signal reading precision is maintained, the performance and the integration level of a magnetic tape reading system are improved, and low-power-consumption design is added, so that energy consumption is greatly reduced.

This invention provides a tape suitable for edge treatment processing to cover the end faces of blanks used in paper containers. [Solution] One aspect of the present invention is a tape having a thermoplastic resin on its surface, used for processing the end faces of blanks used as the body of paper containers. The thickness of the tape is 25 to 200 μm. In the end face processing described above, the tape is positioned so that its longitudinal direction coincides with the longitudinal direction of the end face of the blank, and the tape is folded back so that the approximate center of the longitudinal direction of the tape becomes a fold, and is attached to one side and the other side of the blank so as to cover the end face of the blank.

An automatic tape processing device according to the present invention comprises: a feeding device that conveys a carrier tape, which is loaded on a tape feeder and obtained by adhering a cover tape to the top surface side of a base tape provided, at a fixed pitch, with cavities for accommodating components therein; a cutting device that cuts the base tape and the cover tape at cutting locations; and a control device that determines the cutting locations of the base tape and the cover tape according to the type of tape feeder, and controls operation of the feeding device and the cutting device such that the base tape and the cover tape are cut at the determined cutting locations.

A servo reproduction apparatus according to the present technology includes: a servo reproduction head. The servo reproduction head includes a first reproduction head portion and a second reproduction head portion. The first reproduction head portion reads a servo pattern recorded on a plurality of first servo bands, which are some of a plurality of servo bands in a magnetic tape including the plurality of servo bands. The second reproduction head portion reads a servo pattern recorded on a plurality of second servo bands, which are others of the plurality of servo bands.

A laser printer may include one or more printing platforms, each supporting a cassette from the plurality of cassettes while printing occurs on the cassette; one or more cassette hoppers, each receiving at least one of the plurality of cassettes and feeding the at least one of the plurality of cassettes to at least one printing platform; a laser emitting device for emitting a laser beam to print on the plurality of cassettes; and a method comprising: receiving information indicative of a cassette size for the selected cassette, loading the selected cassette on a printing platform, aligning the selected cassette on the printing platform with a focus plane of the laser beam based on the received information indicative of the cassette size for the selected cassette, printing the marking on a printing surface of the selected cassette; and releasing the selected cassette from the printing platform after printing the marking.

The invention discloses an HDFS (Hadoop Distributed File System) intelligent hierarchical storage method and system based on multi-dimensional popularity perception and tape library integration, and belongs to the technical field of distributed file systems, and the method comprises the following steps: expanding HDFS metadata to construct a unified namespace; acquiring data block access features and dynamically dividing hot, warm and cold data by using a K-means clustering algorithm; executing a self-adaptive grading strategy: adding a copy to hot data and storing in an SSD (Solid State Disk), maintaining a default copy to warm data and storing in a disk, and migrating cold data to a tape library and storing by adopting an erasure code; scattered storage and fault tolerance of relevance perception are realized through a message queue; metadata persistence and periodical re-evaluation are carried out, and automatic migration and dynamic adjustment of data among the SSD layer, the disk layer and the tape library layer are achieved. By adopting the method and the system, the storage strategy and the data access value are accurately matched, the storage cost is finally reduced, and the system I / O performance and the resource utilization rate are improved.