Patents by Inventor Atsushi Fujimoto

Atsushi Fujimoto 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: 11977940
    Abstract: According to one embodiment, there is provided a memory card including a first surface, a second surface, and 1st to Nth terminal groups. The first surface includes first to Nth rows, where N is an integer of two or greater. The second surface faces the opposite side from the first surface. The 1st to Nth terminal groups are placed in the first to Nth rows. The 1st terminal group includes terminals to which differential clock signals are assigned, terminals to which single-ended signals are assigned, and a terminal to which a first power supply voltage is assigned. Kth terminal group, where K is an integer no smaller than two and no greater than N, includes terminals to which differential data signals are assigned.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: May 7, 2024
    Assignee: Kioxia Corporation
    Inventors: Akihisa Fujimoto, Toshitada Saito, Noriya Sakamoto, Atsushi Kondo
  • Publication number: 20240136915
    Abstract: A power converter includes: a multiphase inverter circuit including a plurality of switching elements; a plurality of current sensors each configured to detect a current of the inverter circuit and output a value of the current detected; a terminal voltage detector configured to detect a voltage of each terminal of a load connected to the inverter circuit and output a value of the voltage detected; a switching element drive circuit configured to control the plurality of switching elements of the inverter circuit according to a switching pattern given; a fault detector configured to detect a fault in the inverter circuit or the plurality of current sensors; and a fault identifier configured to, after the fault detector detects the fault, switch the switching pattern to be given to the switching element drive circuit according to types of faults detectable by the fault detector, and perform identification processing of identifying a type and a location of the fault in the inverter circuit or the plurality of cu
    Type: Application
    Filed: April 13, 2021
    Publication date: April 25, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroya NATSUHARA, Isao KEZOBO, Tatsuya MORI, Chiaki FUJIMOTO, Atsushi ITO, Yusuke TAKARADA
  • Publication number: 20240109550
    Abstract: A control device of an embodiment is a control device that makes a proposal for steering to avoid a risk object present on a traveling direction side of a mobile object to a driver of the mobile object and includes a determiner configured to determine, when it is assumed that the mobile object is caused to travel straight from a current position of the mobile object in a current traveling direction for a predetermined time, whether an assumed reference position of the mobile object intersects a traveling road boundary, and a proposer configured to suppress the proposal when it is determined that the reference position intersects the traveling road boundary, and makes the proposal when it is determined that the reference position does not intersect the traveling road boundary.
    Type: Application
    Filed: September 25, 2023
    Publication date: April 4, 2024
    Inventors: Gakuyo Fujimoto, Atsushi Kato, Shigenobu Saigusa, Kotaro Fujimura, Misako Yoshimura, Masamitsu Tsuchiya
  • Publication number: 20240109554
    Abstract: A control device is configured to perform: performing a first process when an index value indicating a degree of closeness to a risky object which is present in front of a mobile object is less than a first threshold value; performing a second process when the index value is equal to or greater than the first threshold value and less than a second threshold value greater than the first threshold value; and performing a third process and the second process when the index value is equal to or greater than the second threshold value. The third process includes a fourth process of proposing a driving operation for avoiding the risky object to a driver. The fourth process is not performed when the driver has performed an action for reducing or releasing an operation of an operator instructing an accelerating operation for accelerating the mobile object.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 4, 2024
    Inventors: Kotaro Fujimura, Atsushi Kato, Shigenobu Saigusa, Gakuyo Fujimoto, Misako Yoshimura, Masamitsu Tsuchiya
  • Patent number: 11922991
    Abstract: According to one embodiment, an information processing apparatus includes a connector into which a first-type semiconductor storage device operating with n types of power supply voltages or a second-type semiconductor storage device operating with m types of power supply voltages less than the n types of power supply voltages is capable of being placed. The apparatus checks whether or not a notch is formed at a predetermined position of a semiconductor storage device placed into the connector, and supplies the m types of power supply voltages to the semiconductor storage device when the notch is formed at the predetermined position.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: March 5, 2024
    Assignee: KIOXIA CORPORATION
    Inventors: Akihisa Fujimoto, Atsushi Kondo
  • Publication number: 20230332074
    Abstract: To provide a composition which is excellent in solubility of various organic substances, presents no adverse effects on the global environment and is excellent in stability. A composition comprising a monochlorotrifluoropropene and at least one stabilizer selected from the group consisting of a carboxylic acid, a carboxylic acid salt and a carboxylic acid ion, characterized in that the content of the stabilizer to the total content of the monochlorotrifluoropropene and the stabilizer is from 0.1 to 500 mass ppm.
    Type: Application
    Filed: June 12, 2023
    Publication date: October 19, 2023
    Applicant: AGC Inc.
    Inventors: Atsushi FUJIMOTO, Satoshi KAWAGUCHI, Hiroaki MITSUOKA
  • Patent number: 9667116
    Abstract: In a generator in which a stator is fixed to a housing which includes a first bracket having a bearing portion for pivotally supporting one end portion of a rotary shaft, and a second bracket covering a cooling fan that rotates with the rotary shaft, and a rotor surrounded by the stator is fixed to the rotary shaft, the stator is fixed to the first bracket, and the first bracket is integrally provided with a tubular portion which surrounds the stator for permitting cooling air sucked in by the cooling fan to flow between the tubular portion and an outer periphery of the stator, and the second bracket is connected to the tubular portion. Accordingly, cost is reduced by connecting first and second brackets together without using long through-bolts, and efficiency of cooling the stator is enhanced by making the cooling air flow along the outer periphery of the stator.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: May 30, 2017
    Assignee: Sawafuji Electric Co., Ltd.
    Inventors: Atsushi Fujimoto, Akizumi Yanai
  • Publication number: 20150270755
    Abstract: In a rotor for a generator in which a rotor core is fixed to a rotary shaft rotatably supported by a housing, and field coils are wound on a bobbin installed in the rotor core, so as to be disposed on opposite sides of one plane passing a center axis of the rotary shaft, parts of the bobbin corresponding to axial outer ends of the rotor core are provided with separation protrusions by each of which a corresponding one of coil end portions at opposite ends of each of the field coils in an axial direction of the rotary shaft is divided into an inner portion and an outer portion in a radial direction of the rotary shaft, and on opposite sides of each of the separation protrusions in a peripheral direction of the rotary shaft, gaps are respectively formed between the inner portion and the outer portion.
    Type: Application
    Filed: September 26, 2013
    Publication date: September 24, 2015
    Applicant: SAWAFUJI ELECTRIC CO., LTD.
    Inventors: Atsushi Fujimoto, Akizumi Yanai
  • Publication number: 20150244235
    Abstract: In a generator in which a stator is fixed to a housing which includes a first bracket having a bearing portion for pivotally supporting one end portion of a rotary shaft, and a second bracket covering a cooling fan that rotates with the rotary shaft, and a rotor surrounded by the stator is fixed to the rotary shaft, the stator is fixed to the first bracket, and the first bracket is integrally provided with a tubular portion which surrounds the stator permitting cooling air sucked in by the cooling fan to flow between the tubular portion and an outer periphery of the stator, and the second bracket is connected to the tubular portion. Accordingly, cost is reduced by connecting first and second brackets together without using long through-bolts, and efficiency of cooling the stator is enhanced by making the cooling air flow along the outer periphery of the stator.
    Type: Application
    Filed: September 26, 2013
    Publication date: August 27, 2015
    Applicant: SAWAFUJI ELECTRIC CO., LTD.
    Inventors: Atsushi Fujimoto, Akizumi Yanai
  • Patent number: 8605658
    Abstract: The wireless communication devices A and B determine the optimal diversity combining weight information that optimizes a diversity reception state at each antenna group A1, A2, . . . , AP through two-way training signal transfer between the wireless communication devices A and B. This optimal diversity combining weight information is set to each antenna of each antenna group A1, A2, . . . , AP. Wireless communication units A?, B? perform spacial mapping of signals from antenna group A1, A2, . . . , AP using MIMO technology. Communication area can be enlarged by hierarchization MIMO using the optimal diversity combining weight information.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: December 10, 2013
    Assignee: Iwatsu Electric Co., Ltd.
    Inventor: Atsushi Fujimoto
  • Patent number: 8385455
    Abstract: Wireless communication devices A and B perform wireless communication with the MIMO technology. The wireless communication devices A and B determine the optimal diversity combining information that optimizes a diversity reception state through a two-way training signal transfer. This determination can be made based on reception level information, baseband reception IQ information, correlation information between a diversity-combining received signal and a predetermined information sequence, or the like, which are obtained when the diversity combining information with respect to each antenna is sequentially changed. The optimal diversity combining information can be determined by receiving training frames or symbols (the number of antennas+1) times.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: February 26, 2013
    Assignee: Iwatsu Electric Co., Ltd.
    Inventor: Atsushi Fujimoto
  • Publication number: 20110268037
    Abstract: The wireless communication devices A and B determine the optimal diversity combining weight information that optimizes a diversity reception state at each antenna group A1, A2, . . . , AP through two-way training signal transfer between the wireless communication devices A and B. This optimal diversity combining weight information is set to each antenna of each antenna group A1, A2, . . . , AP. Wireless communication units A?, B? perform spacial mapping of signals from antenna group A1, A2, . . . , AP using MIMO technology. Communication area can be enlarged by hierarchization MIMO using the optimal diversity combining weight information.
    Type: Application
    Filed: December 28, 2009
    Publication date: November 3, 2011
    Applicant: IWATSU ELECTRIC CO., LTD.
    Inventor: Atsushi Fujimoto
  • Publication number: 20110150066
    Abstract: Wireless communication devices A and B perform wireless communication with the MIMO technology. The wireless communication devices A and B determine the optimal diversity combining information that optimizes a diversity reception state through a two-way training signal transfer. This determination can be made based on reception level information, baseband reception IQ information, correlation information between a diversity-combining received signal and a predetermined information sequence, or the like, which are obtained when the diversity combining information with respect to each antenna is sequentially changed. The optimal diversity combining information can be determined by receiving training frames or symbols (the number of antennas+1) times.
    Type: Application
    Filed: July 24, 2009
    Publication date: June 23, 2011
    Applicant: IWATSU ELECTRIC CO., LTD.
    Inventor: Atsushi Fujimoto
  • Patent number: 7424661
    Abstract: A packet transmitting apparatus comprises a wireless LAN base station and wireless terminals connected to the wireless LAN base station through the wireless LAN. From the wireless LAN base station to the respective wireless terminals, data packets are transmitted in a signal form of frame burst packets without an ACK and a series of header information on the respective data packets are transmitted as notification packets in a signal form of multicast packets. Data packets are individually transmitted from each wireless terminal to the wireless LAN base station by unicast using ACK. Each wireless terminal transmits to the wireless LAN base station a retransmission request to retransmit an unreceived data packet among the frame packets notified by corresponding one of the notification packets. The wireless LAN base station retransmits the packet corresponding to the retransmission request to the wireless terminal that transmits the retransmission request by unicast using ACK.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: September 9, 2008
    Assignee: Iwatsu Electric Company Ltd.
    Inventor: Atsushi Fujimoto
  • Patent number: 6996169
    Abstract: A decision feed back equalizer provides two feedback routines for one symbol-preceding decided data. The signal space is separated into decidable areas and uncertainty areas. Within each of decidable area the distance between any point and the signal point is small. Within each uncertainty area the distance between any point and the signal point is large. If the symbol-preceding equalized signal is in a decidable area, the piece of decided data is fed back, as it is presumed to be correct. If the symbol-preceding equalized signal exists in an uncertainty area, the piece of decided data is not fed back, as it is presumed to be in error. Here the one piece data is selected from all the predicted symbol-preceding decided data so that the instant equalized data is now in the decidable area. This piece of decided data is now fed back.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: February 7, 2006
    Assignee: Iwatsu Electric Co., Ltd.
    Inventors: Masaru Miyamoto, Koichi Ichimura, Atsushi Fujimoto
  • Publication number: 20060013189
    Abstract: A packet transmitting method and a packet transmitting apparatus in a wireless LAN capable of improving a maximum number of simultaneous calls without degrading a call quality are provided. A plurality of wireless terminals 2 are connected to a wireless LAN base station 1 through the wireless LAN. Data packets are transmitted from the wireless LAN base station 1 to the respective wireless terminals 2 in a signal form of frame burst packets without an ACK. A series of header information on the respective data packets are transmitted as notification packets in a signal form of multicast packets from the wireless LAN base station 1 to the wireless terminals 2. Data packets are individually transmitted from each of the wireless terminals 2 to the wireless LAN base station 1 by unicast using ACK.
    Type: Application
    Filed: July 13, 2005
    Publication date: January 19, 2006
    Inventor: Atsushi Fujimoto
  • Patent number: 6546041
    Abstract: A baseband digital IQ signal modulated by digital information and a spread spectrum IQ code sequence whose auto-correlation side lobe is equal to zero are frame-synthesized with each other to obtain a transmission baseband IQ signal. A modulated radio-frequency wave obtained by modulating a radio-frequency wave is transmitted over a radio transmission line. From a received baseband signal obtained by receiving the modulated radio-frequency wave is separated a received signal of the spread spectrum IQ code sequence and a received signal of the baseband digital-modulated IQ signal. A waveform equalized signal which is obtained by waveform-equalization of the received signal of the baseband digital modulated IQ signal is demodulated by the use of transmission parameters of the radio transmission line derived from a despread spectrum signal obtained by dispreading the spread spectrum IQ code sequence, to obtain a received data signal of the digital information transmitted from the transmitting side.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: April 8, 2003
    Assignee: Iwatsu Electric Co., Ltd.
    Inventor: Atsushi Fujimoto
  • Publication number: 20010053181
    Abstract: A decision feed back equalizer is proposed, in which two feed back routins are provided for one symbol-preceding decided data. The signal space is separated into decidable areas and uncertainty areas in the present invention. Each of decidable areas is an area where a distance between any point in the decidable area and the signal point is small. Each uncertainty areas is an area where a distance between any point in the uncertainty area and the signal point is large. In a case where the one symbol-preceding equalized signal exists in a decidable area, since the one symbol-preceding decided data is presumed to be correct, the decided data is fed back.
    Type: Application
    Filed: May 29, 2001
    Publication date: December 20, 2001
    Inventors: Masaru Miyamoto, Koichi Ichimura, Atsushi Fujimoto
  • Patent number: 5418913
    Abstract: A method of two-way communication in a multiprocessor system in which two-way data communication is effected between a first processor and a second processor via a common memory. The first processor sequentially writes data A, B, C, . . . , F into the common memory, and forms a coupled queue. If the data A, B, C among the data A, B, C, . . . , F in the coupled queue are sequentially read by the second processor, the coupled queue is divided into a first partial queue constituted by the data D, E, F and a second partial queue constituted by the data A, B, C. The second processor is capable of sequentially reading the data D, E, F from the first partial queue, while the first processor is capable of sequentially reading the data A, B, C from the second partial queue. When the second processor sequentially reads the data A, B, C, . . . , F and the first processor then sequentially reads the data A, B, C, . . . , F in the above-described manner, it follows that the data A, B, C . . .
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: May 23, 1995
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Atsushi Fujimoto
  • Patent number: 5134721
    Abstract: There is disclosed a noise eliminating device for an angle-modulated wave, in which a carrier amplitude fluctuation of an angle-modulated input wave is detected in a frequency difference detector to obtain a frequency variation signal corresponding to a frequency variation arising at an amplitude limiter from the carrier amplitude fluctuation. Noise caused by the amplitude fluctuation is eliminated from the angle-modulated input wave by subtracting the frequency variation signal from an output signal of the amplitude limiter after or before the frequency difference detector.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: July 28, 1992
    Assignee: Iwatsu Electric Co., Ltd.
    Inventor: Atsushi Fujimoto