Patents by Inventor Kazuhiro Akiyama

Kazuhiro Akiyama 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).

  • Publication number: 20120241753
    Abstract: According to an embodiment, a semiconductor device includes a substrate, a nitride layer and a nitride semiconductor layer. The substrate includes an indented structure provided at a major surface. The nitride layer provided entirely on the major surface is at least one of polycrystalline and amorphous, and includes at least one of p-type impurity and n-type impurity. The nitride semiconductor layer is provided on the nitride layer.
    Type: Application
    Filed: December 1, 2011
    Publication date: September 27, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuhiro Akiyama, Hideki Sakurai
  • Publication number: 20120194321
    Abstract: To provide an IC tag, a method of controlling the IC tag, and an IC tag system which can reduce a communication sequence between the reader/writer and the IC tag and can shorten a communication period or a period necessary for executing the command. According to an embodiment of the invention, an IC tag that executes a command processing based on a command received from a redder/writer, includes: a command analyzing unit determining an execution condition of the command received from the redder/writer; and a command execution unit executing a first command processing if the execution condition is met, and executing a second command processing different from the first command processing if the execution condition is not met.
    Type: Application
    Filed: April 9, 2012
    Publication date: August 2, 2012
    Inventors: Kazuhiro AKIYAMA, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino
  • Patent number: 8174365
    Abstract: To provide an IC tag, a method of controlling the IC tag, and an IC tag system which can reduce a communication sequence between the reader/writer and the IC tag and can shorten a communication period or a period necessary for executing the command. According to an embodiment of the invention, an IC tag that executes a command processing based on a command received from a redder/writer, includes: a command analyzing unit determining an execution condition of the command received from the redder/writer; and a command execution unit executing a first command processing if the execution condition is met, and executing a second command processing different from the first command processing if the execution condition is not met.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: May 8, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino
  • Publication number: 20110312117
    Abstract: According to one embodiment, a method is disclosed for manufacturing a semiconductor light emitting device. The method can include forming an active layer including indium (In) on a heated substrate. The method can include forming a multiple-layer film made of a nitride semiconductor on the active layer in a state of the substrate being heated to substantially the same temperature as a temperature of the forming of the active layer. In addition, the method can include cooling the substrate to room temperature after the forming of the multiple-layer film.
    Type: Application
    Filed: March 4, 2011
    Publication date: December 22, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Aya SUZUKI, Kazuhiro Akiyama, Toshihide Izumiya
  • Publication number: 20110074010
    Abstract: A power module substrate includes: a ceramics substrate having a surface; and a metal plate connected to the surface of the ceramics substrate, composed of aluminum, and including Cu at a joint interface between the ceramics substrate and the metal plate, wherein a Cu concentration at the joint interface is in the range of 0.05 to 5 wt %.
    Type: Application
    Filed: June 5, 2009
    Publication date: March 31, 2011
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshirou Kuromitsu, Yoshiyuki Nagatomo, Takeshi Kitahara, Hiroshi Tonomura, Kazuhiro Akiyama
  • Publication number: 20110067906
    Abstract: A power module substrate includes: a ceramics substrate composed of AlN, having a top face; a metal plate composed of pure aluminum and joined to the top face of the ceramics substrate with a brazing filler metal including silicon interposed therebetween; and a high concentration section formed at a joint interface at which the metal plate is joined to the ceramics substrate, having a silicon concentration that is more than five times the silicon concentration in the metal plate.
    Type: Application
    Filed: May 15, 2009
    Publication date: March 24, 2011
    Applicant: Mitsubishi Materials Corporation
    Inventors: Yoshirou Kuromitsu, Kazuhiro Akiyama, Takeshi Kitahara, Hiroshi Tonomura
  • Patent number: 7889055
    Abstract: An IC tag according to an embodiment of the invention includes: a storage circuit having a plurality of memory cells; and a memory control circuit receiving commands by use of a radio signal to control the storage circuit based on the commands, the commands including a specific command to collectively control the plurality of memory cells, and the memory control circuit executing control corresponding to the specific command on the storage circuit based on the specific command and first key data received in association with the specific command.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: February 15, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino
  • Patent number: 7717349
    Abstract: A semiconductor device for an IC tag comprises a receive unit for demodulating receive data from a received RF signal and a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode for detecting the command from the receive data and a command execution mode for executing the command, and cancels the data signal when the data signal is detected from the receive data in the command execution mode.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: May 18, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino, Shigeki Kajimoto
  • Publication number: 20100030573
    Abstract: The examination schedule memory unit stores an examination schedule including the starting time and the ending time of each examination. A cleaning capacity memory unit stores cleaning-capacity information that specifies the cleaning capacity of cleaning apparatuses that clean a scope used for the examination. A cleaning schedule generation unit generates a cleaning schedule for cleaning a used scope produced at the end of each examination with cleaning apparatuses having a cleaning capacity required by the cleaning-capacity information stored in the cleaning capacity memory unit. The scope shortage determination unit determines whether or not there will be a shortage of scopes to be used for each examination in accordance with both the examination starting time specified by the above examination schedule and the cleaning ending time specified by the cleaning schedule.
    Type: Application
    Filed: July 31, 2009
    Publication date: February 4, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Hiroyuki Araki, Tatsuya Shiobara, Chieko Watanabe, Nobuaki Matsubara, Kazuhiro Akiyama, Hidenori Tsuruma, Tasuku Ogawa
  • Patent number: 7468668
    Abstract: A semiconductor device for an IC tag comprises a receive unit for demodulating receive data from a received RF signal and a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode for detecting the command from the receive data and a command execution mode for executing the command, and generates an error signal when the data signal is not detected from the receive data in the command acceptance mode.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: December 23, 2008
    Assignee: NEC Electronics Corporation
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino, Shigeki Kajimoto
  • Publication number: 20070276701
    Abstract: In cooperation with a first database, a problem preparation supporting unit supports the preparation of nursing problem items for patients. Based on the nursing problem items prepared, a plan preparation supporting unit supports the preparation of nursing care plans by conducting a search through a second database. In cooperation with a third database, a specification unit specifies an implementation of nursing items contained in the prepared nursing care plan. When a communication unit receives an implementation result of the nursing items, the communication unit outputs the result to a recoding unit. A nurse enters an evaluation of the implementation result of the nursing items to an operating apparatus. The evaluation entered is recorded in the recording unit. Among the nursing problem items stored in the recording unit, the nursing items contained in the nursing care plans, the implementation results and the evaluations, a management unit associates mutually corresponding items with one another.
    Type: Application
    Filed: October 27, 2005
    Publication date: November 29, 2007
    Inventors: Hitoshi Suzuki, Shinichi Omori, Kazuhiro Akiyama, Tsuyoshi Nagaeda, Akinori Sasaki, Kiyobumi Watanabe
  • Publication number: 20070069865
    Abstract: According to an embodiment of the invention, an IC tag for receiving a command data including a first command data not requiring the IC tag to send back response data and a second command data requiring the IC tag to send back the response data using a radio signal, including: a control circuit generating a confirmation signal indicating a reception condition of first command data; and a transmitter transmitting the confirmation signal.
    Type: Application
    Filed: September 28, 2006
    Publication date: March 29, 2007
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Tetsuya Kawasaki, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino, Yuichi Sakurai, Tooru Miura
  • Publication number: 20070069863
    Abstract: To provide an IC tag, a method of controlling the IC tag, and an IC tag system which can reduce a communication sequence between the reader/writer and the IC tag and can shorten a communication period or a period necessary for executing the command. According to an embodiment of the invention, an IC tag that executes a command processing based on a command received from a redder/writer, includes: a command analyzing unit determining an execution condition of the command received from the redder/writer; and a command execution unit executing a first command processing if the execution condition is met, and executing a second command processing different from the first command processing if the execution condition is not met.
    Type: Application
    Filed: September 26, 2006
    Publication date: March 29, 2007
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino
  • Publication number: 20070069860
    Abstract: An IC tag according to an embodiment of the invention includes: a storage circuit having a plurality of memory cells; and a memory control circuit receiving commands by use of a radio signal to control the storage circuit based on the commands, the commands including a specific command to collectively control the plurality of memory cells, and the memory control circuit executing control corresponding to the specific command on the storage circuit based on the specific command and first key data received in association with the specific command.
    Type: Application
    Filed: September 26, 2006
    Publication date: March 29, 2007
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino
  • Publication number: 20070024426
    Abstract: By canceling the invalidation, there is provided an IC tag that can be reused after the IC tag's function was invalidated. An IC tag according to an embodiment operates in accordance with a standard protocol and a non-standard protocol and includes a control circuit for switching an operational mode, when receiving a KILL command during an operation based on the standard protocol, to an invalidated state based on the non-standard protocol, and when receiving a KILL cancel command during an operation based on the non-standard protocol, to a normal state based on the standard protocol.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 1, 2007
    Inventors: Kazuhiro Akiyama, Koutarou Satou, Hatsuhide Igarashi
  • Publication number: 20070016453
    Abstract: In a medical information management system, an electronic pen acquires medical information data inputted in handwriting onto a form. A graphic identification unit identifies a graphic area defined by a graphic represented by graphic data contained in the medical information, based on the acquired medical information data. A comment area identification unit identifies a comment area located in a predetermined position relative to the identified graphic area. A comment data identification unit identifies comment data inputted in handwriting to the comment area, among the acquired medical information data. A storage unit stores the acquired medical information data and the identified comment data in a manner that associates the acquired medical information data with the identified comment data.
    Type: Application
    Filed: July 12, 2006
    Publication date: January 18, 2007
    Applicant: Olympus Medical Systems Corporation
    Inventors: Keiichi Hiyama, Shinichi Omori, Ryoichi Hosoya, Kazuhiro Akiyama, Hidenobu Kubo, Naoki Hosaka, Tatsuya Shiobara
  • Publication number: 20060022804
    Abstract: A semiconductor device for an IC tag comprises a receive unit for demodulating receive data from a received RF signal and a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode for detecting the command from the receive data and a command execution mode for executing the command, and generates an error signal when the data signal is not detected from the receive data in the command acceptance mode.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 2, 2006
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino, Shigeki Kajimoto
  • Publication number: 20060022058
    Abstract: A semiconductor device for an IC tag comprises a receive unit for demodulating receive data from a received RF signal and a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode for detecting the command from the receive data and a command execution mode for executing the command, and cancels the data signal when the data signal is detected from the receive data in the command execution mode.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 2, 2006
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino, Shigeki Kajimoto
  • Publication number: 20060022798
    Abstract: A communication system comprises an IC tag, and a reader/writer for performing radio communication with the IC tag. The reader/writer further comprises an encoding unit for encoding a digital signal having at least one bit and generating an encoded signal and a transmission unit for transmitting a modulated wave acquired by modulating a carrier based on the encoded signal during an acceptance period when the encoded signal is accepted in the IC tag, and transmitting the carrier to the IC tag during an execution period when the processing based on the encoded signal is executed in the IC tag. The IC tag further comprises a receive unit for receiving the modulated wave or the carrier transmitted from the reader/writer and a power supply voltage generation unit for generating the power supply voltage based on the received modulated wave or the carrier.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 2, 2006
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino, Shigeki Kajimoto
  • Publication number: 20060022803
    Abstract: A semiconductor device, comprises a receive circuit for generating receive data from received radio signals, a power supply voltage generation circuit for generating power supply voltage based on the received radio signals, a control circuit for performing logical processing based on the received data, a transmission circuit for generating radio signals including transmission data and transmitting the radio signals via an antenna and an oscillation circuit, which is operated using the power supply voltage generated by the power supply voltage generation circuit, for generating a predetermined frequency of clocks.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 2, 2006
    Inventors: Kazuhiro Akiyama, Hatsuhide Igarashi, Seiichi Okamoto, Toshiyuki Miyashita, Kazumi Seki, Tatsuya Uchino, Shigeki Kajimoto