Takashi Furuya
Takashi Furuya, Hitachi JP
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20110003413 | MANUFACTURING METHOD OF SEMICONDUCTOR PHOTONIC DEVICE SUBSTRATE - In a manufacturing method of a semiconductor photonic device substrate, before multi-layer films different in material composition are successively and gradually crystal-grown in one chamber, an inter-layer growth rate model showing a relation in growth rate between each layer is defined, a growth rate of a film corresponding to at least one or more layers is obtained by actual crystal growth using an individual substrate, a growth rate of a film corresponding to other layers is estimated from the obtained growth rate by the inter-layer growth rate model, and a growth time is determined in accordance with a film thickness of each layer of the semiconductor photonic device substrate based on the actually obtained growth rate and the estimated growth rate. These steps are carried out by using a computer system connected to an MOCVD equipment, and then, a crystal growth of the semiconductor photonic device substrate is performed. | 01-06-2011 |
Takashi Furuya, Kawachinagano JP
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20090233934 | Pyrazinecarboxamide Derivatives and Plant Disease Controlling Agents Containing the Same - The present invention provides the compounds represented by the general formula (I): | 09-17-2009 |
Takashi Furuya, Tama-Shi JP
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20100031105 | RANDOM ERROR SIGNAL GENERATOR - In a random error signal generator, an M-sequence generation circuit outputs, in parallel, pieces of bit data stored in each register, a first generation circuit sequentially outputs first reference values C which are changed by a predetermined value in response to clocks, a second generation circuit outputs a second reference value D which is shifted from the first reference value C by a range value E which is determined depending on an error rate p. A comparison and determination unit outputs random error signals to be error bits when a numeric value A of the bit data output exists between the first and second reference values C, D. The random error signal has the error rate p, the number of times of error occurrences follows Poisson distribution, and a distribution of adjacent error occurrence intervals follows a geometric distribution. | 02-04-2010 |
20100205235 | M-SEQUENCE GENERATOR, PROVIDING METHOD THEREOF, AND RANDOM ERROR GENERATING DEVICE IN WHICH M-SEQUENCE GENERATOR IS USED - An M-sequence generator includes EXCLUSIVE-OR gates feeding back pieces of bit data from m number of series registers to the registers in response to a clock. A period of a cyclic group {(α | 08-12-2010 |
Takashi Furuya, Atsugi-Shi JP
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20090282299 | EVALUATION METHOD OF RANDOM ERROR DISTRIBUTION AND EVALUATION APPARATUS THEREOF - A degree of conformity of error distribution of a digital signal to the Poisson distribution is quantitatively determined. The digital signal including error data, which is randomly generated at a predetermined error rate, is divided into data number of measurement units, wherein the data number is determined on the basis of the error rate. A sample number of the measurement units are acquired from the measurement units, and the number of errors contained in each measurement unit is measured as a measurement value. Further, the number of times of occurrence of each measurement value is calculated, a Poisson distribution function is calculated, and a degree of a bond between the Poisson distribution and the distribution of the number of times of occurrence is determined by using the chi-square goodness-of-fit test method. | 11-12-2009 |
20100174971 | ERROR ADDITION APPARATUS - An error addition apparatus receives a data signal D having a frame format having a specific signal inserted into its front, adds errors to the data signal D, and outputs a resulting signal. The apparatus has an error addition regulation unit for receiving a frame synchronization signal F, indicative of a timing at which the front of the frame of the data signal has been inputted, and regulating the errors such that the errors are added to positions other than a region of the specific signal. Accordingly, errors are not added to a specific signal. | 07-08-2010 |
20120257888 | OPU FRAME GENERATING DEVICE AND OPU FRAME TEST DEVICE - An OPU frame generating device includes a frequency setting unit that sets a frequency corresponding to a bit rate of data which can be stored in a payload area, a parameter calculating unit that calculates a parameter C | 10-11-2012 |
Takashi Furuya, Osaka JP
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20090105325 | Substituted Pyrazolecarboxylic Acid Anilide Derivative or Salt Thereof, Intermediate Thereof, Agent for Agricultural and Horticultural Use, and Use Thereof - The substituted pyrazolecarboxanilide derivatives represented by of the formula (I) | 04-23-2009 |
Takashi Furuya, Yokohama-Shi JP
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20150206654 | METHOD FOR MANUFACTURING SINTERED MAGNET - A method for manufacturing a sintered magnet includes molding a green compact formed by compacting a magnet powder by press-molding the magnet powder, the green compact forming an R—Fe—B based sintered magnet having Nd as the principal component and containing a rare earth element R, sintering the green compact by heating to a sintering temperature, so as to mold a sintered magnet, pressure molding the sintered magnet by heating to a temperature not exceeding the sintering temperature, so as to correct dimensions of the sintered magnet, and adjusting the texture of the sintered magnet by aging heat treatment using heated atmosphere produced when correcting the dimensions of the sintered magnet at a temperature not exceeding the temperature during the pressure molding. | 07-23-2015 |