Patents by Inventor Toshikazu Yoshida

Toshikazu Yoshida 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: 8145177
    Abstract: A receiving apparatus includes: a frequency conversion portion that has at least a mixer that down-converts a frequency of a reception radio-frequency signal by mixing the radio-frequency signal and an output from a voltage-controlled oscillator and outputs the down-converted radio-frequency signal; and a resistor element that has a resistance value to set a DC bias voltage of an input transistor in the mixer to which the radio-frequency signal is inputted to a center value of a dynamic range.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: March 27, 2012
    Assignee: Sony Corporation
    Inventor: Toshikazu Yoshida
  • Patent number: 8130782
    Abstract: A passive optical network including: a parent station OLT (optical line terminal); and a plurality of child stations ONU (optical network terminating unit), wherein the parent station and the plurality of child stations transmit an upstream frame and a downstream frame to each other, and the parent station includes means for generating a maintenance signal indicating failure at a mini slot, corresponding to each of the plurality of child stations, on a basis of a receiving state of a signal at the mini slot sent from each of the plurality of child stations.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 6, 2012
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihiro Asashiba, Toshikazu Yoshida, Hiroaki Mukai, Seiji Kozaki
  • Publication number: 20120052391
    Abstract: The electrode for the nonaqueous electrolyte secondary battery includes a current collector and an active material layer formed on the current collector and containing an active material. The active material contains first and second particulate lithium-containing transition metal oxides of different voidages.
    Type: Application
    Filed: July 18, 2011
    Publication date: March 1, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Akihiro Suzuki, Fumiharu Niina, Toshikazu Yoshida, Yoshinori Kida, Shin Fujitani
  • Patent number: 8020869
    Abstract: A game apparatus includes a game execution unit, casing, card arrangement panel, luminator that illuminates the panel, sensor unit that receives light from the panel and generates image data, and recognition unit to separate data of each card, and detect positions of the cards. Each of the plurality of cards is printed with a game character on one of its surfaces and formed on the other of the surfaces with a code pattern including data relating the game character. The sensor unit generates data of the image including the code patterns of the cards on the panel. The recognition unit separates data of each card, and detects position on play field of cards arranged on the panel, from the data of the image and supplies information thus obtained to the execution unit. The execution unit executes a game in response to card manipulation by an operator.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: September 20, 2011
    Assignee: Sega Corporation
    Inventors: Toshiyuki Kaji, Toshikazu Yoshida, Hidenori Shiba, Takao Yamauchi, Fumihiro Kato, Junichi Tsuchiya, Yoshitaka Maeyama, Jinichiro Okuda, Mitsuhiko Kakita
  • Publication number: 20110195309
    Abstract: A positive electrode active material of a nonaqueous electrolyte secondary battery is improved by using an inexpensive lithium transition metal oxide containing nickel and manganese as main components. Output characteristics of the battery under various temperature conditions are thereby improved, and the battery is suitable as a power supply of a hybrid vehicle. The battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a nonaqueous electrolyte prepared by dissolving a solute in a nonaqueous solvent.
    Type: Application
    Filed: February 9, 2011
    Publication date: August 11, 2011
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Fumiharu Nina, Akihiro Suzuki, Shingo Tode, Toshikazu Yoshida, Yoshinori Kida, Hiroyuki Fujimoto
  • Publication number: 20110143216
    Abstract: A lithium secondary battery includes a positive electrode containing a lithium transition-metal oxyanion compound as a positive electrode active material, a negative electrode containing amorphous carbon-coated graphite as a negative electrode active material, and a non-aqueous electrolyte solution, wherein the non-aqueous electrolyte solution contains vinylene carbonate and a solvent and/or a solute that decomposes at a potential more electropositive than that of vinylene carbonate.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 16, 2011
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Toshikazu Yoshida, Hidekazu Yamamoto
  • Patent number: 7767344
    Abstract: A lithium secondary battery includes a negative electrode, a positive electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode current collector (3b) having an irregular surface and a negative electrode active material layer (3a) formed on the surface. In the lithium secondary battery, the negative electrode active material layer (3a) is composed of a material that alloys with Li; thickness of the negative electrode active material layer (3a) (?m)/10-point mean surface roughness Rz of the negative electrode current collector (3b) (?m) is in the range of from 0.5 to 4; and tensile strength of the negative electrode current collector (3b) (N/mm2) at 25° C.×the negative electrode current collector base thickness (mm)/thickness of the negative electrode active material layer (3a) (?m) on one side of current collector is 2 or greater.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: August 3, 2010
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Toshikazu Yoshida, Maruo Kamino
  • Publication number: 20100075621
    Abstract: A receiving apparatus includes: a frequency conversion portion that has at least a mixer that down-converts a frequency of a reception radio-frequency signal by mixing the radio-frequency signal and an output from a voltage-controlled oscillator and outputs the down-converted radio-frequency signal; and a resistor element that has a resistance value to set a DC bias voltage of an input transistor in the mixer to which the radio-frequency signal is inputted to a center value of a dynamic range.
    Type: Application
    Filed: September 23, 2009
    Publication date: March 25, 2010
    Inventor: Toshikazu Yoshida
  • Patent number: 7556197
    Abstract: Embodiments describe a card stack reader having an imaging unit which reads an image from a peripheral side portion of a stack of cards, each card having a read code along a peripheral side edge thereof, the read code indentifying the card, and a code recognizing unit which recognizes the read code of each from the image read by the imaging unit.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: July 7, 2009
    Assignee: Sega Corporation
    Inventors: Toshikazu Yoshida, Hidenori Shiba, Toshiyuki Kaji, Takao Yamauchi, Fumihiro Kato, Akira Nishino, Toru Ohara, Takaharu Terada
  • Publication number: 20090068560
    Abstract: A non-aqueous electrolyte secondary battery has a negative electrode, a non-aqueous electrolyte, and a positive electrode containing a positive electrode active material composed of an olivine lithium-containing metal phosphate represented by the general formula LixMPO4, where M is at least one element selected from the group consisting of Co, Ni, Mn, and Fe, and 0<x<1.3. The positive electrode active material contains a LixMPO4 aggregate formed by granulating a LixMPO4 having an average particle size of 1 ?m or less in a volumetric particle size distribution by coating the LixMPO4 with a binding agent composed of a carbonaceous substance. The LixMPO4 aggregate has an average particle size of 3 ?m or less in the volumetric particle size distribution and a 90th percentile particle size (D90) of 7 ?m or greater, as measured at the 90th percentile point of the volumetric particle size distribution.
    Type: Application
    Filed: August 22, 2008
    Publication date: March 12, 2009
    Inventors: Koji Hasumi, Hiroyuki Akita, Hironori Shirakata, Yoshinori Kida, Toshikazu Yoshida, Kazunori Donoue, Takashi Yamamoto, Tetsuyuki Murata, Shigeki Matsuta
  • Patent number: 7496294
    Abstract: A primary station equipment unit transmits, to a secondary station equipment unit, a message transmission enable signal granting transmission of a PST message from the secondary station equipment unit, when a predetermined period of time defined for transmission elapses after the primary station equipment unit transmitted a downstream PST message in a redundancy switching process corresponding to the secondary station equipment unit.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: February 24, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Michiya Takemoto, Toshikazu Yoshida, Hiroaki Mukai, Yoshihiro Asashiba, Hiroshi Ichibangase, Seiji Kozaki, Mitsuyoshi Iwasaki
  • Publication number: 20090008237
    Abstract: Provided is a method for producing an active material for a lithium secondary battery to enable efficient removal of iron impurities, which would become a problem in production of an active material for a lithium secondary battery, and attain a high quality. The method includes removing iron impurities in an active material for a lithium secondary battery by means of magnetic force. With this method, use of a magnetic force-generating device within a recess portion, which composes at least one part of the recess portion, enables efficient removal of only iron impurities. Thus, it is expected that a voltage drop caused by dissolution of iron compounds, i.e. impurities in a positive electrode, and their migration to a negative electrode in a battery, and decreases in charge and discharge efficiencies and a voltage drop owing to precipitation of lithium can be suppressed.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 8, 2009
    Inventors: Toshikazu Yoshida, Tetsuyuki Murata, Shigeki Matsuta, Yasunobu Iwami, Yoshinori Kida, Hiroyuki Akita, Koji Hasumi
  • Patent number: 7443874
    Abstract: According to an aspect of this invention, dynamic bandwidth assignment (DBA) can be performed without interrupting communication of a regular cell and interfering with communication between child stations. In a passive optical network including a parent station and a plurality of child stations, a maintenance signal for a mini slot signal is provided. Each of the child stations sends a corresponding maintenance signal if necessary, and the parent station controls state transition by using the maintenance signal concerning on the mini slot signal for each of the child stations. By controlling the state transition, the dynamic bandwidth assignment can be performed.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: October 28, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihiro Asashiba, Toshikazu Yoshida, Hiroaki Mukai, Seiji Kozaki
  • Patent number: 7431297
    Abstract: A card game apparatus includes a large-size panel display, a main control unit that controls screens on the large-size panel display, and a plurality of terminal apparatuses that are communicably connected to the main control unit. A game player purchases an integrated circuit card and, for example, eleven player cards on each of which, a soccer player's photograph is printed. When the game player arranges the player cards on a player card arrangement panel of one of the terminal apparatuses, card data recorded on the back of the player card will be read by an internal image sensor. Then, a team is organized by the player cards, and a game starts. The game player can direct a player's position and formation by changing placement of the player card.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: October 7, 2008
    Assignee: Sega Corporation
    Inventors: Toshiyuki Kaji, Toshikazu Yoshida, Hidenori Shiba, Takao Yamauchi, Fumihiro Kato, Junichi Tsuchiya, Yoshitaka Maeyama, Jinichiro Okuda, Mitsuhiko Kakita
  • Publication number: 20080222881
    Abstract: A method of producing an active material for a lithium secondary battery, by which impurities causing problems in synthesizing an active material for a lithium secondary battery, including a lithium transition metal oxyanion compound are removed efficiently and enhancement of an energy density is realized, is provided. By cleaning the active material for a lithium secondary battery, including a lithium transition metal oxyanion compound, with a pH buffer solution, for example, it is possible to efficiently remove just only impurities such as Li3PO4 or Li2CO3, or a substance, other than LiFePO4, in which the valence of Fe is bivalent such as FeSO4, FeO or Fe3(PO4)2 without dissolving Fe of LiFePO4.
    Type: Application
    Filed: February 27, 2008
    Publication date: September 18, 2008
    Inventors: Denis Yau Wai Yu, Kazunori Donoue, Toshikazu Yoshida, Tetsuo Kadohata, Tetsuyuki Murata, Shigeki Matsuta
  • Publication number: 20080188313
    Abstract: The present invention relates to a card stack reader, a card thereof, a card case, a method for manufacturing the card, a game machine using the same, and a computer-readable storage medium on which a game program is recorded. The card stack reader comprises an imaging unit which reads an image from a peripheral side portion of a stack of cards, each card having a read code along a peripheral side edge thereof, the read code identifying the card, and a code recognizing unit which recognizes the read code of each card from the image read by the imaging unit.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 7, 2008
    Inventors: Toshikazu Yoshida, Hidenori Shiba, Toshiyuki Kaji, Takao Yamauchi, Fumihiro Kato, Akira Nishino, Toru Ohara, Takaharu Terada
  • Publication number: 20080182636
    Abstract: The present invention relates to a card stack reader, a card thereof, a card case, a method for manufacturing the card, a game machine using the same, and a computer-readable storage medium on which a game program is recorded. The card stack reader comprises an imaging unit which reads an image from a peripheral side portion of a stack of cards, each card having a read code along a peripheral side edge thereof, the read code identifying the card, and a code recognizing unit which recognizes the read code of each card from the image read by the imaging unit.
    Type: Application
    Filed: February 26, 2008
    Publication date: July 31, 2008
    Inventors: Toshikazu Yoshida, Hidenori Shiba, Toshiyuki Kaji, Takao Yamauchi, Fumihiro Kato, Akira Nishino, Toru Ohara, Takaharu Terada
  • Publication number: 20080132305
    Abstract: A card game system, including a plurality of terminal apparatuses, a card data reading unit for detecting unique data of each of cards when an operator arranges and manipulates a set of cards selected by the operator on a flat surface of the panel on the terminal apparatus, and a game execution unit which is arranged to organize a playing team in a virtual game space based on the data detected from the cards placed on the flat surface of the panel and to execute a game against another playing team organized on another terminal apparatus connected via a network. A progress of the game is controlled in response to manipulation by the operator with the cards on the panel, a main control unit to which individual game data is transmitted from the plurality of the terminal apparatuses, and a display connected to the main control unit.
    Type: Application
    Filed: October 29, 2007
    Publication date: June 5, 2008
    Applicant: SEGA CORPORATION
    Inventors: Toshiyuki Kaji, Toshikazu Yoshida, Hidenori Shiba, Takao Yamauchi, Fumihiro Kato, Junichi Tsuchiya, Yoshitaka Maeyama, Jinichiro Okuda, Mitsuhiko Kakita
  • Patent number: 7357321
    Abstract: The present invention relates to a card stack reader, a card thereof, a card case, a method for manufacturing the card, a game machine using the same, and a computer-readable storage medium on which a game program is recorded. The card stack reader comprises an imaging unit which reads an image from a peripheral side portion of a stack of cards, each card having a read code along a peripheral side edge thereof, the read code identifying the card, and a code recognizing unit which recognizes the read code of each card from the image read by the imaging unit.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: April 15, 2008
    Assignee: Sega Corporation
    Inventors: Toshikazu Yoshida, Hidenori Shiba, Toshiyuki Kaji, Takao Yamauchi, Fumihiro Kato, Akira Nishino, Toru Ohara, Takaharu Terada
  • Patent number: D645000
    Type: Grant
    Filed: January 17, 2010
    Date of Patent: September 13, 2011
    Assignee: Yukita Electric Wire Co., Ltd.
    Inventor: Toshikazu Yoshida