Patents by Inventor Keisuke Tanaka

Keisuke Tanaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Information processing apparatus and information processing method
    Patent number: 9563629
    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.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: February 7, 2017
    Assignee: Sony Corporation
    Inventors: Keisuke Tanaka, Hiroshi Nagatani, Hirotaka Takahashi, Tatsuo Kuroiwa
  • Tape header format having efficient and robust codeword interleave designation (CWID) protection
    Patent number: 9548760
    Abstract: In one embodiment, a computer program product for providing header protection in magnetic tape recording includes a computer readable storage medium having program instructions embodied therewith, the program instructions readable by a processor to cause the processor to: calculate or obtain, by the processor, codeword interleave designation (CWID) parity for all CWIDs in a codeword interleave (CWI) set header, the CWID parity including error correction coding (ECC) parity, and store, by the processor, the CWID parity to a magnetic tape in one or more fields which are repeated for each CWI header in the CWI set header without using reserved bits in the CWI set header to store the CWID parity. Other systems and methods for providing header protection in magnetic tape recording are described in more embodiments.
    Type: Grant
    Filed: May 30, 2015
    Date of Patent: January 17, 2017
    Assignee: International Business Machines Corporation
    Inventors: Roy D. Cideciyan, Robert A. Hutchins, Thomas Mittelholzer, Keisuke Tanaka
  • Unequal error protection scheme for headerized sub data sets
    Patent number: 9542265
    Abstract: A method for decoding a headerized sub data set (SDS) according to one embodiment includes decoding a header from a headerized SDS to obtain a SDS. C1 and C2 decoding are performed on the SDS in a number of iterations based on a number of interleaves in each row of the SDS. A number of columns of the SDS are overwritten with successfully decoded C2 codewords. A number of rows of the SDS are overwritten with successfully decoded C1 codewords. A number of C1 and/or C2 codewords of the SDS are erased. Remaining rows and/or columns of the SDS are maintained as uncorrected. The SDS is output when all rows of the SDS include only C1 codewords and all columns of the SDS include only C2 codewords.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: January 10, 2017
    Assignee: International Business Machines Corporation
    Inventors: Roy D. Cideciyan, Robert A. Hutchins, Thomas Mittelholzer, Keisuke Tanaka
  • ENCODING AND WRITING OF DATA ON MULTITRACK TAPE
    Publication number: 20160329913
    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.
    Type: Application
    Filed: May 4, 2015
    Publication date: November 10, 2016
    Inventors: Roy D. Cideciyan, Simeon Furrer, Mark A. Lantz, Keisuke Tanaka
  • ENCODING AND WRITING OF DATA ON MULTITRACK TAPE
    Publication number: 20160328292
    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.
    Type: Application
    Filed: December 30, 2015
    Publication date: November 10, 2016
    Inventors: Roy D. Cideciyan, Simeon Furrer, Mark A. Lantz, Keisuke Tanaka
  • Priority-based decoding
    Patent number: 9477552
    Abstract: In one embodiment, a tape drive includes a magnetic head having a plurality of read sensors, each read sensor being configured to read data simultaneously. The tape drive also includes a controller and logic integrated with and/or executable by the controller. The logic is configured to receive encoded data read from a plurality of tracks of a magnetic tape medium simultaneously. The logic is also configured to perform priority-based decoding on the encoded data based on erasure coefficients associated with at least one codeword of the encoded data. In another embodiment, a controller-implemented method includes receiving encoded data read from a plurality of tracks of a magnetic tape medium simultaneously and performing priority-based decoding on the encoded data based on erasure coefficients associated with at least one codeword of the encoded data.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: October 25, 2016
    Assignee: International Business Machines Corporation
    Inventors: Steven R. Bentley, Roy D. Cideciyan, Simeon Furrer, Keisuke Tanaka
  • PATTERN FORMING SYSTEM AND SUBSTRATE PROCESSING SYSTEM
    Publication number: 20160300698
    Abstract: A pattern forming system includes: a forming device configured to form a pattern by etching a film on a substrate in a processing vessel; a member in the processing vessel that is positioned in the processing vessel to increase uniformity of the pattern in a surface of the substrate; a measurement apparatus configured to measure a shape or a critical dimension of the pattern; a control device configured to control a temperature of the member in the processing vessel; a processing gas supply unit configured to introduce a processing gas to the processing vessel; and an exhaust device configured to depressurize an inside of the processing vessel to a certain pressure level. The control device is configured to control the temperature of the member in the processing vessel based on the measured shape or the measured critical dimension of the pattern through a feedback control.
    Type: Application
    Filed: June 17, 2016
    Publication date: October 13, 2016
    Inventors: Keisuke Tanaka, Kazuo Sawai, Hiroshi Nagahata
  • ERROR PROTECTION OF DATA STORED USING VARIABLE-LENGTH HEADERS
    Publication number: 20160292034
    Abstract: In one embodiment, a system includes a controller and logic integrated with and/or executable by the controller. The logic is configured to read data stored as a plurality of first codeword sets on a first write section of a magnetic medium. The logic is also configured to read at least some of the data stored as one or more rewritten codeword sets on a rewrite section of the magnetic medium. A length of at least one rewritten row stored to the rewrite section of the magnetic medium is greater than: a length of another rewritten row in the same rewritten codeword set, and/or a length of at least one row in a codeword set stored to the first write section of the magnetic medium.
    Type: Application
    Filed: May 13, 2016
    Publication date: October 6, 2016
    Inventors: Roy D. Cideciyan, Simeon Furrer, Robert A. Hutchins, Keisuke Tanaka
  • ERROR PROTECTION OF DATA STORED USING VARIABLE-LENGTH HEADERS
    Publication number: 20160292033
    Abstract: In one embodiment, a system includes a controller and logic integrated with and/or executable by the controller. The logic is configured to cause data to be written to a first write section of a magnetic medium as a plurality of first codeword sets, and cause at least some of the data to be written to a rewrite section of the magnetic medium as one or more rewritten codeword sets. A length of at least one rewritten row stored to the rewrite section of the magnetic medium is greater than either a length of another rewritten row in the same rewritten codeword set and/or a length of at least one row in a codeword set stored to the first write section of the magnetic medium.
    Type: Application
    Filed: May 13, 2016
    Publication date: October 6, 2016
    Inventors: Roy D. Cideciyan, Simeon Furrer, Robert A. Hutchins, Keisuke Tanaka
  • Combination error and erasure decoding for product codes
    Patent number: 9455749
    Abstract: In one embodiment, a method for combination error and erasure decoding for product codes includes receiving, using a hardware processor, captured data. The method also includes generating, using the hardware processor, erasure flags for the captured data and providing the erasure flags to a C2 decoder. Moreover, the method includes setting a stop parameter to be equal to a length of C1 codewords in a codeword interleave used to encode the captured data. In addition, the method includes selectively performing, in an iterative process, error or erasure C1 decoding followed by error or erasure C2 decoding until decoding is successful or unsuccessful. Other methods and computer program products are described in more embodiments.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: September 27, 2016
    Assignee: International Business Machines Corporation
    Inventors: Roy D. Cideciyan, Robert A. Hutchins, Thomas Mittelholzer, Keisuke Tanaka
  • Track-dependent decoding
    Patent number: 9412410
    Abstract: In one embodiment, a tape drive includes a magnetic head having a plurality of read sensors, each read sensor being configured to read data simultaneously, a controller, and logic integrated with and/or executable by the controller. The logic is configured to read, using the plurality of read sensors, encoded data from a plurality of tracks of a magnetic tape medium simultaneously. The logic is also configured to perform 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.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: August 9, 2016
    Assignee: International Business Machines Corporation
    Inventors: Steven R. Bentley, Roy D. Cideciyan, Simeon Furrer, Keisuke Tanaka
  • Post-decoding error check with diagnostics for product codes
    Patent number: 9413392
    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. At least three decoding operations are performed in the iterative decoding, with the decoding operations being selected from a group consisting of: C1 decoding and C2 decoding. 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.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: August 9, 2016
    Assignee: International Business Machines Corporation
    Inventors: Steven R. Bentley, Roy D. Cideciyan, Robert A. Hutchins, Keisuke Tanaka
  • Determination method, control method, determination apparatus, pattern forming system and program
    Patent number: 9396911
    Abstract: A determination method, a control method, a determination apparatus, a pattern forming system, and a storage medium can determine a replacement time of a focus ring accurately and quickly. The determination method is capable of determining the replacement time of a focus ring that surrounds a substrate to increase uniformity of a pattern in a surface of the substrate when the pattern is formed by etching a film on the substrate. The determination method includes measuring a shape or a critical dimension of the pattern; and determining the replacement time of the focus ring based on the measured shape or the measured critical dimension of the pattern.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: July 19, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Keisuke Tanaka, Kazuo Sawai, Hiroshi Nagahata
  • Solid-state imaging device and imaging apparatus
    Patent number: 9391105
    Abstract: A solid-state imaging device includes: unit pixels each having a light-receiving element which is divided into line widths shorter than or equal to a wavelength of light; a plurality of light-transmissive films in a concentric structure; and an effective refractive index distribution. Among the light-transmissive films, a light-transmissive film closest to a center of the concentric structure has an outer edge in a shape of a true circle, and a light-transmissive film far from the center of the concentric structure has an outer edge in a shape of an oval, a ratio of a long axis to a short axis of the oval increases as the light-transmissive film is farther away from the center of the concentric structure, and a direction of the long axis of the oval is orthogonal to a vector which connects the center of the concentric structure and a center of the solid-state imaging device.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: July 12, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Manabu Usuda, Shigeru Saitou, Keisuke Tanaka, Kazutoshi Onozawa
  • Error protection of data stored using variable-length headers
    Patent number: 9373357
    Abstract: In one embodiment, a system includes logic configured to cause data, organized into a plurality of logical arrays including rows and columns of symbols, to be written to a first write section of a magnetic medium as a plurality of CWI-4 sets, each row of the logical arrays including four interleaved headerized C1? codewords (a headerized CWI-4), where each CWI-4 set includes M concurrently written rows of a logical array having M corresponding first headers, and cause some of the data to be written to a rewrite section of the magnetic medium as one or more rewritten CWI-4 sets, where a length of at least one rewritten row is greater than at least one of: a length of another rewritten row in the same rewritten CWI-4 set, and a length of at least one row in a CWI-4 set stored to the first write section of the magnetic medium.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: June 21, 2016
    Assignee: International Business Machines Corporation
    Inventors: Roy D. Cideciyan, Simeon Furrer, Robert A. Hutchins, Keisuke Tanaka
  • Toner
    Patent number: 9372424
    Abstract: A magnetic toner contains magnetic toner particles and silica fine particles. The magnetic toner has a thermal conductivity in the range of 0.230 to 0.270 W/(m·K). Primary particles of the silica fine particles have a number-average particle diameter (D1) in the range of 5 to 20 nm. The coverage X1 of the magnetic toner surface by the silica fine particles ranges from 40% to 75% by area as determined using an X-ray photoelectron spectrometer (ESCA). The diffusion index (X1/X2) satisfies the following formula: Diffusion index??0.0042×X1+0.62 wherein X2 denotes the theoretical coverage of the magnetic toner surface by the silica fine particles.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: June 21, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Matsui, Yusuke Hasegawa, Shuichi Hiroko, Yoshitaka Suzumura, Atsuhiko Ohmori, Keisuke Tanaka
  • TONER AND METHOD OF PRODUCING TONER
    Publication number: 20160154331
    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.
    Type: Application
    Filed: November 17, 2015
    Publication date: June 2, 2016
    Inventors: Keisuke Tanaka, Takashi Matsui, Satoshi Arimura, Kozue Uratani, Shohei Tsuda, Naoki Okamoto
  • TONER
    Publication number: 20160139521
    Abstract: Provided is a toner, including: a toner particle containing a binder resin and a colorant; and an inorganic fine particle, in which the toner particle has an average circularity of 0.960 or more, and in which the toner satisfies the formula (1) and the formula (2). Fp(A)?25.0 nN??Formula (1) (Fp(B)?Fp(A))/Fp(A)?0.
    Type: Application
    Filed: October 26, 2015
    Publication date: May 19, 2016
    Inventors: Shohei Tsuda, Takashi Matsui, Satoshi Arimura, Kozue Uratani, Keisuke Tanaka, Naoki Okamoto
  • Write delay to de-skew data in read while write function for tape storage devices
    Patent number: 9318138
    Abstract: A controller, according to one embodiment, has at least some hardware components, and is configured to determine an offset between adjacent arrays of transducers in a direction perpendicular to an intended direction of media travel when a magnetic head having the arrays is positioned at a first position, cause the magnetic head to tilt to a second position, and delay write operations performed by at least some of the transducers in a first of the arrays such that data written by the transducers in the first array is readable by a second array of read transducers aligned in the direction orthogonal to the intended direction of media travel without implementing readback delays corresponding to the write delays.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: April 19, 2016
    Assignee: International Business Machines Corporation
    Inventors: Nhan X. Bui, Tomoko Taketomi, Keisuke Tanaka, Kazuhiro Tsuruta
  • Tape header protection scheme for use in a tape storage subsystem
    Patent number: 9251846
    Abstract: In one embodiment, a system for integrating data and header protection includes a processor and logic integrated with and/or executable by the processor, the logic being configured to receive a data array organized in rows and columns, each row of the data array comprising two or more interleaved C1 codewords (CWI), and modify one or more rows of the data array to include a header and error correction code (ECC) parity to form one or more modified rows, wherein each modified row includes two or more interleaved codewords, at least one codeword being a C1? codeword which includes ECC parity, wherein each header comprises a CWI Designation (CWID) which indicates a location of the CWI within the data array, and wherein none of the CWIDs are split across multiple C1? codewords in a single modified row. Other systems, methods, and computer program products are presented in additional embodiments.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: February 2, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Roy D. Cideciyan, Robert A. Hutchins, Thomas Mittelholzer, Keisuke Tanaka