Patents by Inventor Akihiko Takada

Akihiko Takada 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).

  • Patent number: 10771132
    Abstract: Disclosed is a MIMO system including a transmitter and a receiver, in which an overall BER characteristic is improved. The transmitter (1) maps data, distributed among transmit antennas, onto an IQ plane to generate carrier symbols, and then, applies an inter-polarization interleave processing in a time direction to the carrier symbols between the transmit antennas, to generate OFDM signals. Receiving the OFDM signals, the receiver (2) demodulates the OFDM signals to generate complex baseband signals, and after that, applies a first deinterleave processing in a time direction to the complex baseband signals to generate time deinterleaved data. Further, the receiver (2) applies a MIMO separation processing to the time deinterleaved data to generate a plurality of sets of MIMO separated data and applies a second deinterleave processing between the receive antennas to the plurality of sets of MIMO separated data, so as to generate carrier symbols.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: September 8, 2020
    Assignees: NIPPON HOSO KYOKAI, NHK Engineering System, Inc.
    Inventors: Shingo Asakura, Madoka Honda, Kenichi Murayama, Takuya Shitomi, Susumu Saito, Yoshikazu Narikiyo, Hiroaki Miyasaka, Akihiko Satou, Tomoaki Takeuchi, Kenichi Tsuchida, Masahiro Okano, Masayuki Takada, Kazuhiko Shibuya
  • Patent number: 10762955
    Abstract: A memory system includes a storage device and a controller. The storage device includes a first string including a first memory cell transistor and a second memory cell transistor connected in series to each other, and a first select transistor, a second string including a third memory cell transistor and a second select transistor, a gate of the second select transistor being independent from a gate of the first select transistor. The controller configured to perform first writing to cause a threshold voltage of the first memory cell transistor to be lower than a first target threshold voltage, perform second writing to cause a threshold voltage of the second memory cell transistor to be higher than a second target threshold voltage after the first writing, perform third writing to cause a threshold voltage of the first memory cell transistor to be higher than the first target threshold voltage after the second writing, and perform fourth writing on the third memory cell transistor after the third writing.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: September 1, 2020
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Akihiko Sakai, Masanobu Shirakawa, Marie Takada
  • Publication number: 20200269380
    Abstract: A first and a second substrate polishing apparatus and are provided with a film thickness sensor for measuring a film thickness of layer to be polished and polish the layer by pressing the substrate against a polishing pad. The first substrate polishing apparatus outputs difference between output value of the film thickness sensor when an underlayer is exposed and output value of the film thickness sensor when the substrate is not present, as a first offset value. The second substrate polishing apparatus has a storage unit that stores information of the first offset value, an output correction unit that corrects the output value from the film thickness sensor based on the first offset value, and an end point detection unit that outputs control signal indicating end point of substrate polishing when measured value of the film thickness of the layer calculated based on the corrected output value reaches target value.
    Type: Application
    Filed: February 21, 2020
    Publication date: August 27, 2020
    Inventors: Yuta Suzuki, Taro Takahashi, Akihiko Ogawa, Shigeyuki Furuya, Yuji Yagi, Nobuyuki Takada, Shinpei Tokunaga
  • Publication number: 20200251744
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The separator has a multilayer structure in which a first filler layer containing phosphate particles, a porous resin substrate, and a second filler layer containing inorganic particles having higher heat resistance than the phosphate particles are stacked in this order from the negative electrode side. The first filler layer is disposed on the porous resin substrate in such a manner that the surface of the first filler layer faces the surface of the negative electrode. The phosphate particles have a BET specific surface area in the range of 5 m2/g or more and 100 m2/g or less.
    Type: Application
    Filed: November 2, 2018
    Publication date: August 6, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akihiko Takada, Masanori Sugimori, Nobuhiro Hirano, Yuki Morikawa, Yasunori Baba, Katsunori Yanagida
  • Publication number: 20200090740
    Abstract: A memory system includes a storage device and a controller. The storage device includes a first string including a first memory cell transistor and a second memory cell transistor connected in series to each other, and a first select transistor, a second string including a third memory cell transistor and a second select transistor, a gate of the second select transistor being independent from a gate of the first select transistor. The controller configured to perform first writing to cause a threshold voltage of the first memory cell transistor to be lower than a first target threshold voltage, perform second writing to cause a threshold voltage of the second memory cell transistor to be higher than a second target threshold voltage after the first writing, perform third writing to cause a threshold voltage of the first memory cell transistor to be higher than the first target threshold voltage after the second writing, and perform fourth writing on the third memory cell transistor after the third writing.
    Type: Application
    Filed: February 26, 2019
    Publication date: March 19, 2020
    Inventors: Akihiko SAKAI, Masanobu SHIRAKAWA, Marie TAKADA
  • Patent number: 10541760
    Abstract: A radio communication apparatus configured to perform frequency conversion on a first transmission signal modulated at a frequency in a specific frequency band into a second transmission signal having a frequency in a transmission frequency band, in which the apparatus includes: a circuit configured to generate a first calibration signal having a frequency higher than a highest frequency in the specific frequency band, and a second calibration signal having a frequency lower than a lowest frequency of the specific frequency band; a circuit configured to add the first and second calibration signals to the first transmission signal; a circuit configured to estimate a phase at a center frequency in the specific frequency band of the first transmission signal, and output a phase correction coefficient corresponding to the estimated phase; and a circuit configured to correct the phase of the first transmission signal, based on the phase correction coefficient.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: January 21, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Akihiko Komatsuzaki, Shinichiro Kobayashi, Ryo Koizumi, Toshiyuki Takada, Yumihiko Annaka, Hiroshi Yasui
  • Patent number: 10357944
    Abstract: An aluminum alloy substrate bears a first layer on at least one side thereof, and a second layer on at least part of the first layer. The first layer includes an oxide film containing Mg in a content of from 0.1 atomic percent to less than 30 atomic percent. The second layer contains siloxane bonds. The second layer is disposed in a mass of coating of from 0.1 mg/m2 to less than 30 mg/m2. Assume that parallel polarized light is applied to the side bearing the first layer and the second layer at an incident angle of 75°, and resulting data are analyzed by Fourier-transform infrared spectroscopy to give a spectrum. In the spectrum, a peak occurring adjacent to 1057 cm?1 has an area of 0.01 or more with respect to a base line drawn from 1026 cm?1 to 1084 cm?1.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: July 23, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Satoru Takada, Akihiko Tatsumi
  • Patent number: 10353613
    Abstract: When mounting hardware which is coupled to another portion by a plurality of paths with different applications, despite the hardware being a single device, and a failure occurs in any of the paths, there is a risk that the failure may propagate to other components unless the other paths are also blocked. In order to solve the problem described above, in a storage apparatus to which a device coupled by a plurality of coupling paths with different applications can be mounted, the present invention determines a block range at the time of an occurrence of a failure to be a device and a plurality of coupling paths coupled to the device, manages the block range, and upon an occurrence of a failure, executes failure handling which involves blocking an appropriate block range determined in advance by referring to the information.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: July 16, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Akihiko Araki, Yusuke Nonaka, Masanori Takada, Naoya Okada
  • Publication number: 20190199454
    Abstract: A radio communication apparatus configured to perform frequency conversion on a first transmission signal modulated at a frequency in a specific frequency band into a second transmission signal having a frequency in a transmission frequency band, in which the apparatus includes: a circuit configured to generate a first calibration signal having a frequency higher than a highest frequency in the specific frequency band, and a second calibration signal having a frequency lower than a lowest frequency of the specific frequency band; a circuit configured to add the first and second calibration signals to the first transmission signal; a circuit configured to estimate a phase at a center frequency in the specific frequency band of the first transmission signal, and output a phase correction coefficient corresponding to the estimated phase; and a circuit configured to correct the phase of the first transmission signal, based on the phase correction coefficient.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 27, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Akihiko Komatsuzaki, Shinichiro Kobayashi, Ryo KOIZUMI, Toshiyuki Takada, Yumihiko ANNAKA, HIROSHI YASUI
  • Publication number: 20190181423
    Abstract: A nonaqueous electrolyte secondary battery according to an embodiment includes an electrode body, which is formed by winding a positive electrode and a negative electrode through a separator and then compressing into a flat shape, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide which contains tungsten oxide adhering to the particle surfaces thereof. The negative electrode contains a negative electrode active material, which has particle surfaces coated with an amorphous carbon film, and at least one of polyacrylic acid and a salt thereof. The pressure acting in the thickness direction of the electrode body is 5×10?2 MPa or more.
    Type: Application
    Filed: July 28, 2017
    Publication date: June 13, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akihiko Takada, Sho Urata, Kouhei Tuduki, Fumiharu Niina, Katsunori Yanagida
  • Publication number: 20190044184
    Abstract: In a nonaqueous electrolyte secondary battery, a positive electrode contains a lithium transition metal oxide and a phosphoric acid compound. A nonaqueous electrolyte contains a dinitrile represented by a general formula: NC-A-CN (A represents a linear hydrocarbon having 1 to 10 carbon atoms or a hydrocarbon which contains a main chain having 1 to 10 carbon atoms and at least one side chain having 3 or less carbon atoms); an ether represented by a general formula: R1—O—R2—O—R3 (R1 and R3 each represent a group which contains a main chain having 1 to 3 carbon atoms, and R2 represents a chain hydrocarbon group having 1 to 3 carbon atoms); and a fluorophosphate salt.
    Type: Application
    Filed: February 20, 2017
    Publication date: February 7, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akihiko Takada, Fumiharu Niina, Katsunori Yanagida
  • Publication number: 20180212269
    Abstract: It is an object of the present disclosure to provide a nonaqueous electrolyte secondary battery with improved room-temperature regeneration. The present disclosure provides a nonaqueous electrolyte secondary battery that includes an electrode assembly having a structure in which a positive plate and a negative plate are stacked with a separator therebetween and also includes a nonaqueous electrolyte. The positive plate contains a lithium transition metal oxide, an element belonging to the group 5 or 6 of the periodic table, and a phosphoric acid compound. The nonaqueous electrolyte contains 1,2-dimethoxyethane.
    Type: Application
    Filed: September 20, 2016
    Publication date: July 26, 2018
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akihiko Takada, Fumiharu Niina, Katsunori Yanagida
  • Patent number: 10024848
    Abstract: A flow channel device includes a flow channel section and an introduction channel section. The flow channel section includes a flow channel in which a detection object flows and a wall surface surrounding the flow channel. The introduction channel section includes an introduction channel having a first end connected to the flow channel and a second end connected to an introduction port, and a wall surface surrounding the introduction channel. At least a part of the wall surface surrounding the introduction channel is a curved surface protruding toward the introduction channel.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: July 17, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akihiko Takada, Kiyoshi Hashimotodani, Yusuke Kitagawa
  • Publication number: 20180026305
    Abstract: It is an object of the present invention to provide a nonaqueous electrolyte secondary battery improved not only in room-temperature output but also in low-temperature regeneration. A positive electrode plate contains a lithium transition metal oxide as a positive electrode active material. A mix of the positive electrode plate contains a tungsten oxide and a phosphate compound. A nonaqueous electrolyte contains a linear sulfonate. When both of the tungsten oxide and the phosphate compound are present near the positive electrode active material, the linear sulfonate forms a movable decomposition product by oxidative decomposition on a surface of a positive electrode without forming any coating and the decomposition product and the unreacted linear sulfonate are reductively decomposed on a surface of the negative electrode together and a low-resistance coating is thereby formed.
    Type: Application
    Filed: February 18, 2016
    Publication date: January 25, 2018
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Akihiko Takada, Takatoshi Higuchi, Daisuke Nishide, Atsushi Fukui
  • Publication number: 20160120770
    Abstract: The layered double hydroxide is characterized by comprising base layers each comprising a metal double hydroxide represented by the formula: M(II)1-XM(III)X(OH)2 (wherein M(II) represents one or two bivalent metal atoms; M(III) represents a trivalent metal atom; and x represents 0.2 to 0.33), and an intermediate layer and interlayer water each intercalated between the base layers, wherein the intermediate layer comprises a compound represented by the formula: R1-COOH or R2-SO3H (wherein R1 and R2 independently represent at least one substituent selected from an aliphatic hydrocarbon group, a substituted aliphatic hydrocarbon group, an aromatic hydrocarbon group, a substituted aromatic hydrocarbon group, a heterocyclic group and a substituted heterocyclic group).
    Type: Application
    Filed: April 11, 2014
    Publication date: May 5, 2016
    Applicant: TAYCA CORPORATION
    Inventors: Akihiko Takada, Takeshi Okumiya, Jun Yamashita
  • Publication number: 20160069873
    Abstract: A flow channel device includes a flow channel section and an introduction channel section. The flow channel section includes a flow channel in which a detection object flows and a wall surface surrounding the flow channel. The introduction channel section includes an introduction channel having a first end connected to the flow channel and a second end connected to an introduction port, and a wall surface surrounding the introduction channel. At least a part of the wall surface surrounding the introduction channel is a curved surface protruding toward the introduction channel.
    Type: Application
    Filed: April 16, 2014
    Publication date: March 10, 2016
    Inventors: AKIHIKO TAKADA, KIYOSHI HASHIMOTODANI, YUSUKE KITAGAWA
  • Publication number: 20150343437
    Abstract: A flow channel device includes the following elements: an introduction region for receiving a specimen into the flow channel; a discharge region for discharging the specimen; and a trap body between the introduction region and the discharge region. In the trap body formed in the flow channel, the lateral area of the lateral side surface of the trap body facing the introduction region side is larger than the projected area of the lateral side surface of the trap body projected along the flow channel from the introduction region side toward the discharge region side with respect to the trap body.
    Type: Application
    Filed: December 26, 2013
    Publication date: December 3, 2015
    Inventors: YUSUKE KITAGAWA, KIYOSHI HASHIMOTODANI, AKIHIKO TAKADA
  • Patent number: 7953302
    Abstract: Information indicating an area of an image and information indicating attributes of the image have been stored in an IC chip attached to an original paper. When a copying apparatus performs a character recognition process operation with respect to an image displayed on the original paper, the copying apparatus reads the information related to the area of the image and the information related to the attribute of this area from the IC chip attached to this original paper. Then the copying apparatus separates an area where a character is displayed therefrom. The copying apparatus executes the character recognition process operation with respect to the image of the separated area.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: May 31, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryoji Watanabe, Akihiko Takada, Masayoshi Sakakibara, Hajime Kishimoto, Yasuo Horino, Toshiyuki Yano, Yasuhiro Matsuo
  • Patent number: 7630093
    Abstract: An UI section receives a printing parameter set by a user. A data reading section reads a printing parameter from an original paper. An image reading section reads an image from the original paper. When an IC chip has been attached to the original paper, a parameter selecting section selects a printing parameter thereof, whereas in other cases, the parameter selecting section selects a printing parameter, which is set by the user. An image processing section and a printing control section execute an image processing operation and a printing operation in accordance with the selected printing parameter.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: December 8, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryoji Watanabe, Akihiko Takada, Masayoshi Sakakibara, Hajime Kishimoto, Yasuo Horino, Toshiyuki Yano, Yasuhiro Matsuo
  • Patent number: 7623260
    Abstract: When two or more sheets of images, which have been read from two or more sheets of originals are printed on a single sheet of first printing paper, original information related to the originals is stored into an IC chip attached to the first printing paper. Thereafter, when a user desires to reproduce the originals by using this first printing paper, the original information stored in the IC chip is read therefrom. Based on the read original information, the images read from the originals are printed respectively in the same sizes as those of the respective originals.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: November 24, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryoji Watanabe, Akihiko Takada, Masayoshi Sakakibara, Hajime Kishimoto, Yasuo Horino, Toshiyuki Yano, Yasuhiro Matsuo