Patents by Inventor Hiromichi Yamada

Hiromichi Yamada 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: 20060036704
    Abstract: This invention provides communications systems that enable broadcasting while making use of the simplicity of the prior art and also provides control devices and information processing systems incorporating the communications system. In this invention, chip-select signals are provided for transmitting (TXCSi) and receiving (RXCSi) independently as well as for individual chips as in the prior art. That is, a group of signals indicating whether or not a slave node is selected as the node to transmit signals to a master node and the direction of communications are output from the master node to the slave node.
    Type: Application
    Filed: November 4, 2004
    Publication date: February 16, 2006
    Applicant: Renesas Technology Corporation
    Inventors: Nobuyasu Kanekawa, Hiromichi Yamada, Kohei Sakurai, Kotaro Shimamura, Yuichiro Morita, Satoshi Tanaka
  • Patent number: 6986029
    Abstract: A micro-controller includes a dictionary memory for storing instruction codes which appear in a program, and a compressed code memory for storing compressed codes each converted from each of the instruction codes included in the program. Each compressed code has a word length sufficiently long to identify all instruction codes included in the program. Each compressed code has a value indicative of an address in the dictionary memory at which an associated instruction code is stored. The micro-controller is responsive to an instruction code read request which specifies an address of a compressed code to read the compressed code stored in the specified address in the compressed code memory, and to subsequently read an instruction code stored in an address indicated by the compressed code in the dictionary memory.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: January 10, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Yamada, Dai Fujii, Yasuhiro Nakatsuka, Takashi Hotta, Kotaro Shimamura, Tatsuki Inuduka, Takanaga Yamazaki
  • Publication number: 20050198471
    Abstract: A micro-controller includes a dictionary memory for storing instruction codes which appear in a program, and a compressed code memory for storing compressed codes each converted from each of the instruction codes included in the program. Each compressed code has a word length sufficiently long to identify all instruction codes included in the program. Each compressed code has a value indicative of an address in the dictionary memory at which an associated instruction code is stored. The micro-controller is responsive to an instruction code read request which specifies an address of a compressed code to read the compressed code stored in the specified address in the compressed code memory, and to subsequently read an instruction code stored in an address indicated by the compressed code in the dictionary memory.
    Type: Application
    Filed: April 29, 2005
    Publication date: September 8, 2005
    Applicant: Hitachi, Ltd.
    Inventors: Hiromichi Yamada, Dai Fujii, Yasuhiro Nakatsuka, Takashi Hotta, Kotaro Shimamura, Tatsuki Inuduka, Takanaga Yamazaki
  • Patent number: 6915413
    Abstract: A micro-controller includes a dictionary memory for storing instruction codes which appear in a program, and a compressed code memory for storing compressed codes each converted from each of the instruction codes included in the program. Each compressed code has a word length sufficiently long to identify all instruction codes included in the program. Each compressed code has a value indicative of an address in the dictionary memory at which an associated instruction code is stored. The micro-controller is responsive to an instruction code read request which specifies an address of a compressed code to read the compressed code stored in the specified address in the compressed code memory, and to subsequently read an instruction code stored in an address indicated by the compressed code in the dictionary memory.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: July 5, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Yamada, Dai Fujii, Yasuhiro Nakatsuka, Takashi Hotta, Kotaro Shimamura, Tatsuki Inuduka, Takanaga Yamazaki
  • Publication number: 20050091428
    Abstract: A master unit sends a start signal to a slave unit. When receiving the start signal from the master unit, the slave unit sends, to the master unit, a synchronization field that is a data train (pulse signal) indicative of a transfer clock with which the slave unit is able to perform transferring and receiving operations. The master unit sends, to the slave unit, command data in accordance with the transfer clock indicated by the synchronization field sent from the slave unit. In response to the command data sent from the master unit, the slave unit sends, to the master unit, response data in accordance with the transfer clock indicated by the synchronization field. Thus, in a communication system employing a serial data transferring apparatus of the present invention, the master unit establishes the synchronization for the data transfer, while the slave unit is free from a burden of establishing the synchronization for the data transfer.
    Type: Application
    Filed: October 2, 2001
    Publication date: April 28, 2005
    Inventors: Masahiro Matsumoto, Fumio Murabayashi, Hiromichi Yamada, Keiji Hanzawa, Hiroyasu Sukesako
  • Publication number: 20050040978
    Abstract: In an A/D converter and a microcontroller including the same, the number of selection patterns of analog input channels is increased for each A/D conversion and the A/D conversion is conducted using an A/D converter having only fundamental functions without imposing load onto a CPU. The A/D converter or a DMA transfer device includes an A/D conversion table including one or more entries. Each entry includes enable bits for setting whether or not an A/D conversion is executed for the respective analog input channels and a plurality of count number bits for setting a number of executions of the A/D conversion.
    Type: Application
    Filed: August 6, 2004
    Publication date: February 24, 2005
    Inventors: Yuichiro Morita, Kohei Sakurai, Nobuyasu Kanekawa, Masatoshi Hoshino, Hiromichi Yamada, Kotaro Shimamura, Satoshi Tanaka, Naoki Yada
  • Publication number: 20050021929
    Abstract: The invention provides a code compression technology that is favorable for a micro controller or other embedded system, and for compressed codes, resulting from conversion of program codes into variable length codes, and grouped program codes, address conversion information for specifying the start address of each group and compressed code type information for specifying the code length of each compressed code contained in a group are stored in a memory, and by enabling a corresponding compressed code address to be calculated from a code address output by a CPU, code compression that is favorable for a micro controller or other embedded system is realized.
    Type: Application
    Filed: June 30, 2003
    Publication date: January 27, 2005
    Inventors: Hiromichi Yamada, Yuichi Abe, Yasuhiro Nakatsuka, Takanaga Yamazaki
  • Patent number: 6830446
    Abstract: A clamping apparatus includes upper and lower platens; one or more tiebars connecting the platens; and an intermediate platen between the upper and lower platens for movement relative to and along the tiebars. Upper and lower mold halves are provided on the upper and intermediate platens, respectively. A linkage connects the lower and intermediate platens. The linkage includes upper and lower links connected with each other for rotation on an intermediate shaft. The upper and lower links are pivotably supported on first and second shafts fixed to the intermediate and lower platens, repectively. The intermediate shaft is operatively connected with a drive mechanism so that the drive mechanism transmits a driving force to the linkage, and the lower platen is moved relative to the intermediate platen. A set of a radical needle bearing and a thrust bearing is used for at least one of the intermediate, first, and second shafts.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: December 14, 2004
    Assignees: Mitsubishi Electric Engineering Company Limited, Renesas Technology Corp.
    Inventors: Hiroyoshi Harada, Itaru Matsuo, Takehiko Ikegami, Hiromichi Yamada, Jyunji Sakakibara, Hiroaki Tanoue
  • Publication number: 20040174372
    Abstract: A microprocessor for processing a large quantity of graphics data. The microprocessor independent of a CPU has two ports, and performs an instruction fetch and a data access or a memory access simultaneously to two memories mounted on separate buses. A graphics processing apparatus provided by the microprocessor transfers graphics data between a system memory and a frame memory at high speeds.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 9, 2004
    Inventors: Hiromichi Yamada, Tadashi Fukushima, Shigeru Matsuo, Takashi Miyamoto, Tooru Komagawa, Syoji Yoshida
  • Patent number: 6758888
    Abstract: A water-in-oil (W/O) emulsion ink for stencil printing is provided which is prevented from pigment aggregation and thus excellent in ink fixability, high in printing density and less declining in printing density even after printing many sheets. The emulsion ink has a ratio by volume of the water phase to liquid components of the oil phase (i.e., volume of water phase/volume of the liquid components of oil phase) in a range of 1.0 to 3.5, preferably 1.0 to 3.0 at 23° C. The liquid components of the oil phase may be composed of a resin, a solvent and a surfactant. The oil phase can contain a pigment at a ratio by volume of 0.19 or less to the total volume of the oil phase. The pigment preferably has an average particle size of 0.02 to 1.5 (&mgr;m). The water phase preferably has an average particle size of 0.1 to 1.0 (&mgr;m). The ink is suitable for containing particles of organic pigments with non-uniform shapes and a large average particle size like copper phthalocyanine blue and diaxazine violet.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: July 6, 2004
    Assignee: Riso Kagaku Corporation
    Inventors: Hiroyuki Ogawa, Sadanao Okuda, Hiromichi Yamada
  • Publication number: 20040107337
    Abstract: The present invention prevents a data processor from undesirable operation stop due to an overflow of a plurality of register banks. A status register includes an overflow flag to indicate an overflow of the plurality of register banks. When an interrupt exception occurs in a state in which data has been saved to all banks of the register banks, and the accepted interrupt exception is permitted to use the register banks, a central processing unit saves data of a register set to a stack area and reflects an overflow state in the overflow flag. When the overflow flag indicates an overflow state, if data restoration from the register banks to the register set is directed, the central processing unit restores the data from the stack area to the register set.
    Type: Application
    Filed: October 23, 2003
    Publication date: June 3, 2004
    Applicant: Renesas Technology Corp.
    Inventors: Yasuo Sugure, Tomomi Ishikura, Kazuya Hirayanagi, Takeshi Kataoka, Seiji Takeuchi, Hiromichi Yamada, Takanaga Yamazaki
  • Publication number: 20040093480
    Abstract: A data processor of the present invention efficiently performs decision processing on register conflict. The data processor contains n-bit instructions and 2n-bit instructions in an instruction set and includes an instruction control unit that can decide whether registers specified in register specification fields of the instructions conflict between the instructions. The 2n-bit instructions including register specification fields have the register specification fields in the first half n bits thereof, and the register specification fields in the first half n bits comprise the same placement as register specification fields in the n-bit instructions. Shift operations required to cut out the register specification fields from the instructions, either 2n-bit or n-bit instructions, can be simplified or deleted by aligning the register specification fields in the 2n-bit instructions with those in the n-bit instructions.
    Type: Application
    Filed: October 21, 2003
    Publication date: May 13, 2004
    Applicant: Renesas Technology Corp.
    Inventors: Kesami Hagiwara, Kazuya Hirayanagi, Yasuo Sugure, Takeshi Kataoka, Seiji Takeuchi, Hiromichi Yamada, Yuichi Abe
  • Patent number: 6727903
    Abstract: A microprocessor suitable for processing a large quantity of graphics data. Graphics processing apparatus and method using the microprocessor are also disclosed. The microprocessor independent of a CPU has two ports, and performs an instruction fetch and a data access or a memory access simultaneously to two memories mounted on separate buses. In the graphics processing apparatus in which this microprocessor is employed, the graphics transfer between a system memory and a frame memory can be performed at higher speed.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: April 27, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Yamada, Tadashi Fukushima, Shigeru Matsuo, Takashi Miyamoto, Tooru Komagawa, Syoji Yoshida
  • Publication number: 20040066883
    Abstract: An oxide phosphor includes an oxide consisting of at least Gd, Ce, Al, Ga, and O, and has the crystal structure of a garnet structure, the atomic ratio (Gd+Ce)/(Al+Ga+Gd+Ce) of which is more than 0.375 and 0.44 or less, and the atomic ratio Ce/(Ce+Gd) of which is 0.0005 or more and 0.02 or less. This oxide phosphor reduces composition misalignment occurring during sintering, being a drawback of a phosphor having (Gd1-xCex)3Al5-yGayO12 composition, and has a property of extremely small afterglow and high luminescence efficiency. By using this oxide phosphor as a scintillator of a radiation detector having a light detector, the radiation detector with low afterglow and high output can be obtained. Further, by applying this radiation detector to an X-ray CT apparatus, a tomogram with high resolution and high quality can be obtained.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 8, 2004
    Inventors: Tsuneyuki Kanai, Makoto Sato, Ichiro Miura, Hiromichi Yamada
  • Patent number: 6706213
    Abstract: A novel phosphor represented by the general formula (Gd1-y-zCeyScz)3Al5-dGadO12 (wherein y, z and d are values falling in the ranges of 0.0005≦y≦0.05, 0<z≦0.03 and 0<d<5) is provided by adding scandium (Sc) to a phosphor represented by the general formula of (Gd1-yCey)3Al5-dGadO12 (wherein y and d are values falling in the ranges of 0.0005≦y≦0.02 and 0<d<5). The phosphor has a high luminous efficiency and a very small afterglow. A radiation detector using this phosphor as ceramic scintillator is capable of obtaining a high luminous output and suitable for a radiation detector of X-ray CT because of its high luminous output and a very small afterglow.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: March 16, 2004
    Assignee: Hitachi Medical Corporation
    Inventors: Hiromichi Yamada, Tsuneyuki Kanai, Takaaki Kobiki, Ichiro Miura, Makoto Sato, Minoru Yoshida
  • Patent number: 6696782
    Abstract: Green-emitting phosphor having a composition formula represented by (Y1-x-aGdxMa)3-3yTb3y(Al1-zGaz)5O12, where 0<x≦1, 0≦a<1, 0<x+a≦1, 0<y<1 and 0≦z≦1 and M is at least one of Sc, Yb and La, improves emission color of phosphors of Y3(Al, Ga)5O12:Tb series, and in case that y=0.07, z=0.4 and a=0 in the foregoing composition, color y is increased with increasing Gd concentration, when Gd concentration x is changed, and the emission color becomes clear green.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: February 24, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Shin Imamura, Masatoshi Shiiki, Hiromichi Yamada, Masaaki Komatsu
  • Patent number: 6657459
    Abstract: A semiconductor integrated circuit device, responsive to an input signal having a low amplitude and short transition time, operates with low power consumption and prevents the flow of breakthrough current. In an example circuit thereof, the input signal is transmitted through an NMOS pass transistor to the gate of a first NMOS transistor and is applied, through a second NMOS transistor, to the gate of a first PMOS transistor, the first PMOS transistor performing complementary operation with the first NMOS transistor through the second NMOS transistor; the gate of the first PMOS transistor is connected to the power supply potential through the second PMOS transistor; the gate of the second NMOS transistor is connected to the power supply potential; and the gate of the second PMOS transistor is controlled by the signal at a common drain connection of the first NMOS and first PMOS transistors.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: December 2, 2003
    Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.
    Inventors: Yoji Nishio, Kosaku Hirose, Hideo Hara, Katsunori Koike, Kayoko Nemoto, Tatsumi Yamauchi, Fumio Murabayashi, Hiromichi Yamada
  • Patent number: 6609232
    Abstract: In logical compound of inter-subblock paths, circuits including all inter-subblock paths are generated. Logical compound is conducted for the generated circuits to achieve logical compound of the inter-subblock paths. By treating inter-subblock paths as intra-subblock paths, no input/output delay restriction is required for the logical compound of inter-subblock paths. This makes it possible to fully use performance of the logical compound tool, and hence the inter-subblock paths can be optimized through one operation of the processing.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: August 19, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Teppei Hirotsu, Ryo Fujita, Kotaro Shimamura, Hiromichi Yamada, Dai Fujii, Haruyuki Nakayama
  • Publication number: 20030141484
    Abstract: A novel phosphor represented by the general formula
    Type: Application
    Filed: October 25, 2002
    Publication date: July 31, 2003
    Inventors: Hiromichi Yamada, Tsuneyuki Kanai, Takaaki Kobiki, Ichiro Miura, Makoto Sato, Minoru Yoshida
  • Patent number: 6590425
    Abstract: There is disclosed a circuit apparatus which is highly tolerant to noises and operates at a higher speed than a conventional completely complementary static CMOS circuit. To achieve this, the circuit apparatus features a plurality of CMOS static logic circuits which are series-connected and potential setting circuitry which is connected to the output parts of these logic circuits and sets the outputs of the output parts to a low level in synchronization with a clock signal, thus propagating signals by operation of the NMOS circuit. In other words, a signal propagation delay occurs only when the N-type logic block conducts. Therefore, circuit operation is speeded up and &agr; particle noise and noises due to charge redistribution effect or leakage current can be prevented.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: July 8, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Fumio Murabayashi, Tatsumi Yamauchi, Takashi Hotta, Hiromichi Yamada