Abstract: In one embodiment, a method includes reading, using a plurality of read sensors of a magnetic head in a read channel of a tape drive, encoded data from a plurality of tracks of a magnetic tape medium simultaneously. Also, the method includes monitoring statistics for the read channel, the statistics monitored for the read channel including exponentially averaged mean squared error (MSE) or signal-to-noise ratio (SNR) for each simultaneously read track. Moreover, the method includes performing track-dependent erasure decoding on the encoded data based on detection of one or more time-varying signal quality issues associated with at least one of the plurality of tracks read simultaneously from the magnetic tape medium. The one or more time-varying signal quality issues are determined based on side information about reliability of detected bytes within C1 codewords of each simultaneously-read track.

Abstract: A toner comprising: a toner particle containing a binder resin and a colorant, and an inorganic fine particle A and B present on the surface of the toner particle, wherein the inorganic fine particle A is a silica fine particle having a number-average particle diameter (D1) of primary particles in a specific range, the inorganic fine particle B has a number-average particle diameter (D1) of primary particles in a specific range, and is at least one fine particle selected from a group consisting of a silica fine particle, a titanium oxide fine particle, and an alumina fine particle, A total fixing ratio of the inorganic fine particle A and B is 75% or more, and an inter-particle force Fp(A) and an inter-particle force Fp(B) are within specific numerical ranges and satisfy a specific relationship.

Abstract: Recombinant collagenases with a stable specific activity and enzyme agents for cell and tissue dissociation such a recombinant are provided. The recombinant collagenase is derived from Grimontia hollisae-derived collagenase is characterized by having, from the N terminus to the C terminus, a collagenase catalytic domain, a linker region sequence, and a prepeptidase C terminal domain, which Grimontia hollisae-derived recombinant collagenase does not comprise at least the prepeptidase C terminal domain. The obtained recombinant collagenase has a high and stable specific activity.

Abstract: Various embodiments for data error recovery in a tape storage system, by a processor device, are provided. In one embodiment, a method comprises, in a tape storage system using an iterative hardware and microcode decoder, initializing at least one iterative decode cycle on the buffered dataset when an uncorrectable read error occurs; and for a next iterative decode cycle, building upon data corrections obtained in a previous iterative decode cycle.

Abstract: In one embodiment, a system includes a controller and logic integrated with and/or executable by the controller. The logic is configured to perform iterative decoding on encoded data to obtain decoded data. The logic is also configured to perform post-decoding error diagnostics on a first portion of the decoded data in response to not obtaining a valid product codeword in the first portion after the iterative decoding of the encoded data. Other systems, methods, and computer program products for producing post-decoding error signatures are presented in accordance with more embodiments.

Abstract: In one embodiment, a system includes a data processing unit configured to read encoded data from a magnetic tape medium. The data processing unit is also configured to decode a plurality of codeword interleaves (CWIs) from the encoded data, each CWI being a row in a sub data set logically organized into a two-dimensional array. The array includes a predetermined number of rows and columns of predetermined lengths. The data processing unit is also configured to determine an address for a first-written CWI without successfully decoding a corresponding codeword interleave designation (CWID) from the encoded data, each CWID specifying an address for a corresponding CWI. Also, each CWID is calculated as a function of a logical track number and a CWI set number.

Abstract: In one embodiment, a method includes reading, using a plurality of read sensors of a magnetic head in a read channel of a tape drive, encoded data from a plurality of tracks of a magnetic tape medium simultaneously. Also, the method includes monitoring statistics for the read channel, the statistics monitored for the read channel including exponentially averaged mean squared error (MSE) or signal-to-noise ratio (SNR) for each simultaneously read track. Moreover, the method includes performing track-dependent erasure decoding on the encoded data based on detection of one or more time-varying signal quality issues associated with at least one of the plurality of tracks read simultaneously from the magnetic tape medium. The one or more time-varying signal quality issues are determined based on side information about reliability of detected bytes within C1 codewords of each simultaneously-read track.

Abstract: Provided is toner comprising toner particle containing binder resin and colorant and silica fine particle, wherein: the silica fine particle contains silica fine particle A and silica fine particle B; silica fine particle A has a number average particle diameter of primary particle of 5 nm or more and 20 nm or less; silica fine particle B has a number average particle diameter of primary particle of 80 nm or more and 200 nm or less; and silica fine particle B has a half width of a peak of primary particle of 25 nm or less, in a weight-based particle size distribution, and wherein when the toner is measured by adhesive force-measuring method by using polycarbonate thin film, an adhesion of the silica fine particle A is 0.5% by area or less relative to 100% by area of the total area of the polycarbonate thin film.

Abstract: According to one embodiment, a system for processing data includes a controller configured to determine whether a position error signal (PES) is invalid while reading data from a magnetic medium using at least one data channel. The controller is also configured to determine whether a PES value is above a first predetermined threshold in response to a determination that the PES is valid. Moreover, the controller is configured to inject error bits into a data stream in place of corresponding bits of decoded data in response to a determination that the PES is invalid and in response to a determination that the PES value is above the first predetermined threshold. Other systems and methods for processing data are described in accordance with more embodiments.

Abstract: In one embodiment, a system includes a data processing unit configured to read encoded data from a magnetic tape medium. The data processing unit is also configured to decode a plurality of codeword interleaves (CWIs) from the encoded data, each CWI being a row in a sub data set logically organized into a two-dimensional array. The array includes a predetermined number of rows and columns of predetermined lengths. The data processing unit is also configured to determine an address for a first-written CWI without successfully decoding a corresponding codeword interleave designation (CWID) from the encoded data, each CWID specifying an address for a corresponding CWI. Also, each CWID is calculated as a function of a logical track number and a CWI set number.

Abstract: Disclosed is a collagen powder and/or a collagen derivative powder, which are obtained by dispersing in a hydrophilic organic solvent a crude collagen precipitate which comprises 12 to 50% by mass of a collagen precipitate and/or a collagen derivative precipitate having an average particle size of 1 to 1,000 ?m, recovering solids and then drying the solids. By dispersing the crude collagen precipitate in the hydrophilic organic solvent, the resulting precipitates can be dehydrated, so that drying of the thus obtained solids can be done by air-drying. In addition, the resulting collagen powder and/or collagen derivative powder exhibit excellent solubility due to an increased specific surface area and also have excellent ease of handling with the average particle size being 8 to 1,000 ?m.

Abstract: A block of data is partitioned into a plurality of sub-blocks each including a logical array having rows and columns of data symbols, encoded using a row linear block code and a column linear block code. Each product codeword includes a logical array of code symbols having rows which include respective row codewords and columns which include respective column codewords. The product codewords are encoded by encoding groups of L symbols, using a rate-L/(L+M) linear block code to produce a plurality of (L+M)-symbol codewords which are logically arranged in nQ encoded blocks (where n is an integer greater than zero). Each of the nQ encoded blocks includes an array having rows and columns of code symbols in which each column includes a codeword of the column code.

Abstract: A block of data is partitioned into a plurality of sub-blocks each including a logical array having rows and columns of data symbols, encoded using a row linear block code and a column linear block code. Each product codeword includes a logical array of code symbols having rows which include respective row codewords and columns which include respective column codewords. The product codewords are encoded by encoding groups of L symbols, using a rate-L/(L+M) linear block code to produce a plurality of (L+M)-symbol codewords which are logically arranged in nQ encoded blocks (where n is an integer greater than zero). Each of the nQ encoded blocks includes an array having rows and columns of code symbols in which each column includes a codeword of the column code.

Abstract: According to one embodiment, a method for processing data includes determining whether a PES is invalid while reading data from a magnetic medium using at least one data channel, determining whether a PES value is above a first predetermined threshold when the PES is valid, injecting error bits into a data stream in place of corresponding bits of decoded data when the PES is invalid and/or the PES value is above the first predetermined threshold, decoding the data using a run-length limited (RLL) decoder to produce the decoded data based on the data from the magnetic medium, and outputting the data stream. Other methods, systems, and tape drives for processing data using error injection are described in more embodiments.

Abstract: A system and method for recommending content to a user. In embodiments of the system and method, one or more content groups is generated, at least one of the content groups including more than one type of content, and a display indicative of the one or more content groups is presented to the user.

Abstract: Various embodiments for data error recovery in a tape storage system, by a processor device, are provided. In one embodiment, a method comprises, in a tape storage system using a hardware-initiated and microcode-initiated iterative decoder, initializing a microcode cut/paste algorithm on a buffered dataset by copying the buffered dataset to a reserved buffer segment; wherein the buffered dataset is a most corrected buffered dataset developed by at least one iterative decode cycle; and the buffered dataset, updated C1 data row error flags, and a correction status recovered by the at least one iterative decode cycle are cut and pasted over a working copy of a dataset resident in the reserved buffer segment.

Abstract: In one embodiment, a tape drive includes a reserved data buffer and logic integrated with and/or executable by a processor. The logic is configured to read a data set from a medium and store a first portion of the data set to the reserved data buffer in response to a determination that the first portion of the data set is correctable using C2 error correction code (ECC). The logic is also configured to replace any stored row of a non-C2-correctable portion of the data set stored to the reserved data buffer with a corresponding row of the data set read from the medium in response to a determination that the stored row of the non-C2-correctable portion of the data set has an equal amount or more C1-correctable error therein than the corresponding row of the data set read from the medium.

Abstract: In one embodiment, a method includes loading first data into a first buffer of an interposer during a first time period and loading second data into a second buffer of the interposer and performing a first decoding operation on the first data using a first decoder during a second time period. The method includes loading third data into a third buffer of the interposer, performing the first decoding operation on the second data using the first decoder, and performing a second decoding operation on the first data using a second decoder during a third time period. Moreover, the method includes loading fourth data into a fourth buffer of the interposer, performing the first decoding operation on the third data using the first decoder, and performing the second decoding operation on the second data during a fourth time period. The first and second decoding operations are C1 or C2 decoding operations.

Abstract: A system and method for recommending content to a user. In embodiments of the system and method, one or more content groups is generated, at least one of the content groups including more than one type of content, and a display indicative of the one or more content groups is presented to the user.