Patents by Inventor Takeshi Tomizawa

Takeshi Tomizawa 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: 11017952
    Abstract: A multi-layer ceramic electronic component includes: a ceramic body including first and second main surfaces facing in a first axis direction, first and second end surfaces facing in a second axis direction, and first and second internal electrodes; a first external electrode including a first cover portion covering the first end surface, and a first extended portion extending from the first cover portion to the second main surface; and a second external electrode including a second cover portion covering the second end surface, and a second extended portion extending from the second cover portion to the second main surface, the multi-layer ceramic electronic component satisfying that, when T1 represents a dimension of the ceramic body in the first axis direction and T2 represents a dimension of each extended portion in the first axis direction, T1+T2 is 50 ?m or less, and T2/(T1+T2) is 0.32 or less.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: May 25, 2021
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yasutomo Suga, Masataka Watabe, Takeshi Nakajima, Yuji Tomizawa, Toshiya Kuji
  • Publication number: 20200128584
    Abstract: According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Masahiro SEKIYA, Takeshi TOMIZAWA, Daisuke TAKI, Masaaki IKUTA, Tomoya SUZUKI
  • Patent number: 10524289
    Abstract: According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 31, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Masahiro Sekiya, Takeshi Tomizawa, Daisuke Taki, Masaaki Ikuta, Tomoya Suzuki
  • Publication number: 20190357257
    Abstract: An electronic apparatus includes processing circuitry configured to select a first interval to be used for an access to a medium when a first condition is satisfied. The first interval has a fixed length shorter than DIFS (distribute coordination function inter frame space) defined in IEEE802.11 standard. The processing circuitry is also configured to select a second interval to be used for the access to the medium when a second condition different from the first condition is satisfied. The second interval has a fixed length equal to or longer than the DIFS defined in the IEEE802.11 standard. The electronic apparatus also includes wireless circuitry configured to access the medium to transmit a radio wave conforming to a first wireless specification different from the IEEE802.11 standard after the medium is idle for the selected first or second interval.
    Type: Application
    Filed: July 30, 2019
    Publication date: November 21, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Ryoko MATSUO, Tomoya TANDAI, Takeshi TOMIZAWA
  • Patent number: 10453891
    Abstract: A substrate with conductive film includes a base material; and a film of a conductive metal oxide arranged on an upper part of the base material. The film includes, by a top plan view, a first region and a second region, the second region is configured of a same material as the first region, and an electric resistance of the second region is higher than an electric resistance of the first region. The second region includes a part configured by a plurality of cellular sections surrounded by a plurality of fine cracks. In the part, each fine crack has a width of 1 nm to 50 nm, and each cellular section has a largest measure of less than 10 ?m.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: October 22, 2019
    Assignee: AGC Inc.
    Inventors: Takeshi Tomizawa, Yuki Aoshima, Reo Usui, Hidefumi Odaka
  • Patent number: 10420141
    Abstract: A wireless communication apparatus includes a transmission and reception processing unit which communicates using a first communication scheme, by using either a first inter frame spaces of a first type or the second inter frame spaces of the first type, wherein the second inter frame spaces is larger than the first inter frame spaces, the second inter frame spaces is determined based on an inter frame space used in a second communication scheme.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: September 17, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Ryoko Matsuo, Tomoya Tandai, Takeshi Tomizawa
  • Patent number: 10085285
    Abstract: According to one embodiment, a wireless communication apparatus is provided with first and second determination units. The first unit determines based on a first carrier sense threshold whether busy state or not and specifies a first time when busy state is determined with the first threshold, and determines based on a second carrier sense threshold smaller than the first threshold whether busy state or not and specifies a second time when busy state is determined. The second unit determines, if at least busy state is determined based on the second threshold and the second time precedes a reference time equal to or earlier than the first time, to perform processing for avoiding interference.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: September 25, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryoko Matsuo, Tomoya Tandai, Takeshi Tomizawa, Tomoko Adachi
  • Patent number: 10063472
    Abstract: A wireless communication terminal including a transmitter which transmits, to an external device, a frame including n frame sets each including a subheader field, a frame check sequence field, and a frame body field including data, where n is an integer of two or more. The subheader field includes a sequence number field which notifies a sequence number; a more fragment field which notifies whether or not the data is a last fragment; and a frame body length field which notifies a length of the frame body field. A receiver receives, from the external device, a response frame notifying a successively and successfully received maximum sequence number which indicates a highest sequence number among sequence numbers indicated in sequence number fields of frame sets which have been successively and successfully received by the external device among the n frame sets included in the transmitted frame.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: August 28, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Takeshi Tomizawa, Tomoya Tandai
  • Publication number: 20170330913
    Abstract: A substrate with conductive film includes a base material; and a film of a conductive metal oxide arranged on an upper part of the base material. The film includes, by a top plan view, a first region and a second region, the second region is configured of a same material as the first region, and an electric resistance of the second region is higher than an electric resistance of the first region. The second region includes a part configured by a plurality of cellular sections surrounded by a plurality of fine cracks. In the part, each fine crack has a width of 1 nm to 50 nm, and each cellular section has a largest measure of less than 10 ?m.
    Type: Application
    Filed: August 1, 2017
    Publication date: November 16, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Takeshi TOMIZAWA, Yuki AOSHIMA, Reo USUI, Hidefumi ODAKA
  • Patent number: 9717049
    Abstract: According to one embodiment, a wireless communication apparatus includes a first processor, a second processor and a controller. The first processor generates one or more first frames and one or more second frames. The second processor transmits the first frames and the second frames, and receives a first acknowledgement and a second acknowledgement. The controller retains a first interval relating to a time interval between the first transmission request and the second transmission request and a second interval relating to a time interval between a first and a second time points, and controls transmission of frames to be transmitted based on the first and the second intervals.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 25, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Tomoya Tandai, Takeshi Tomizawa, Ryoko Matsuo
  • Publication number: 20170188390
    Abstract: According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.
    Type: Application
    Filed: September 15, 2016
    Publication date: June 29, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Masahiro SEKIYA, Takeshi TOMIZAWA, Daisuke TAKI, Masaaki IKUTA, Tomoya SUZUKI
  • Publication number: 20170099220
    Abstract: A wireless communication terminal including a transmitter which transmits, to an external device, a frame including n frame sets each including a subheader field, a frame check sequence field, and a frame body field including data, where n is an integer of two or more. The subheader field includes a sequence number field which notifies a sequence number; a more fragment field which notifies whether or not the data is a last fragment; and a frame body length field which notifies a length of the frame body field. A receiver receives, from the external device, a response frame notifying a successively and successfully received maximum sequence number which indicates a highest sequence number among sequence numbers indicated in sequence number fields of frame sets which have been successively and successfully received by the external device among the n frame sets included in the transmitted frame.
    Type: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Takeshi Tomizawa, Tomoya Tandai
  • Publication number: 20170086227
    Abstract: According to one embodiment, a wireless communication apparatus is provided with first and second determination units. The first unit determines based on a first carrier sense threshold whether busy state or not and specifies a first time when busy state is determined with the first threshold, and determines based on a second carrier sense threshold smaller than the first threshold whether busy state or not and specifies a second time when busy state is determined. The second unit determines, if at least busy state is determined based on the second threshold and the second time precedes a reference time equal to or earlier than the first time, to perform processing for avoiding interference.
    Type: Application
    Filed: December 1, 2016
    Publication date: March 23, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryoko MATSUO, Tomoya TANDAI, Takeshi TOMIZAWA, Tomoko ADACHI
  • Patent number: 9553688
    Abstract: According to one embodiment, a wireless communication apparatus is provided with first and second determination units. The first unit determines based on a first carrier sense threshold whether busy state or not and specifies a first time when busy state is determined with the first threshold, and determines based on a second carrier sense threshold smaller than the first threshold whether busy state or not and specifies a second time when busy state is determined. The second unit determines, if at least busy state is determined based on the second threshold and the second time precedes a reference time equal to or earlier than the first time, to perform processing for avoiding interference.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: January 24, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryoko Matsuo, Tomoya Tandai, Takeshi Tomizawa, Tomoko Adachi
  • Patent number: 9544227
    Abstract: According to one embodiment, a wireless communication terminal including a receiver, a first processor, a first storage, a second storage, a second processor, and a transmitter is provided. The receiver receives one physical packet that includes at least one frame body field, a first field including information on a length of the frame body field, a second field used to detect an error of the frame body field, and a sequence number field including a sequence number corresponding to the frame body field. The second storage retains a successively and successfully received maximum sequence number on the basis of a result of the first processor. The transmitter transmits a response frame indicating the successively and successfully received maximum sequence number when the first processor extracts at least one correct frame body.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: January 10, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Takeshi Tomizawa, Tomoya Tandai
  • Patent number: 9398549
    Abstract: According to one embodiment, a wireless communication apparatus includes following units. The first timer measures first time intervals. The second timer measures second time intervals. The time interval selection unit selects a second time interval among second time intervals included in each first time interval. The control unit controls the transmitting unit and the receiving unit to operate, during the selected second time interval, in a first operational state in which a transmission of a connection request signal and a wait for reception of a response signal are repeatedly performed, and to operate, during each of the second time intervals other than the selected second time interval, in a second operational state in which a wait for reception of a connection request signal transmitted by another apparatus is performed for a third time interval shorter than each of the second time intervals.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 19, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoya Tandai, Koji Akita, Takeshi Tomizawa
  • Publication number: 20160119954
    Abstract: A wireless communication apparatus includes a transmission and reception processing unit which communicates using a first communication scheme, by using either a first inter frame spaces of a first type or the second inter frame spaces of the first type, wherein the second inter frame spaces is larger than the first inter frame spaces, the second inter frame spaces is determined based on an inter frame space used in a second communication scheme.
    Type: Application
    Filed: January 6, 2016
    Publication date: April 28, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Ryoko MATSUO, Tomoya TANDAI, Takeshi TOMIZAWA
  • Patent number: 9258828
    Abstract: According to one embodiment, a wireless communication apparatus includes a storage, a selection unit, a processing unit. The storage stores a first set and a second set, including first frame spaces of one or more types and the second set including second frame spaces of the one or more types, each of the second frame spaces that are identical in type to the first frame spaces being not less than the first frame spaces, and a second frame space of any one of the types being longer than a first frame space of the any one of the types. The selection unit selects either the first set or the second set. The processing unit communicates with a first apparatus, by using either the first frame spaces or the second frame spaces.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: February 9, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Ryoko Matsuo, Tomoya Tandai, Takeshi Tomizawa
  • Patent number: 9252924
    Abstract: One embodiment provides a wireless apparatus including: a reception unit which receives a data signal having a header field and a data field, the header field including a reply request which specifies either an acknowledgement or a negative acknowledgement; a decision unit which decides a reception result indicating whether the header field and the data field have been received successfully or unsuccessfully; and a transmission unit which transmits the acknowledgement or the negative acknowledgement in accordance with the reply request and the reception result of the data field when the header field has been received successfully, and transmits the negative acknowledgement when the header field has been received unsuccessfully.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: February 2, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryoko Matsuo, Tomoya Tandai, Takeshi Tomizawa
  • Patent number: 9191188
    Abstract: According to one embodiment, a transmitting device includes a wireless transmitting unit which wirelessly transmits data. The transmitting device includes a wireless receiving unit which receives the data wirelessly transmitted by the wireless transmitting unit. The transmitting device includes a synchronization signal outputting unit which outputs a synchronization signal to a signal transmitting medium of an electric conductor. The transmitting device includes a synchronization outputting unit which receives the synchronization signal from the signal transmitting medium and outputs a signal including the data received by the wireless receiving unit according to the synchronization signal.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: November 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Akita, Takayoshi Ito, Koichiro Ban, Takeshi Tomizawa