Patents by Inventor Takashi Taniguchi
Takashi Taniguchi 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).
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Patent number: 5289396Abstract: In a data processor, second data are subtracted from first data to derive an overflow signal. The sum of the second data and "1" is subtracted from the first data to derive another overflow signal. The magnitude relation between the first and second data from the overflow signals is detected.Type: GrantFiled: April 17, 1992Date of Patent: February 22, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Takashi Taniguchi
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Patent number: 5289398Abstract: A multiplication processing device provided with a recoding circuit for dividing an M-digit number (M is a natural number), the radix of which is .UPSILON., into consecutive N-digit sets (N is a natural number equal to or less than M) and for calculating an intermediate sum S.sub.i and an intermediate carry C.sub.i according to Z.sub.gi =C.sub.i .times..UPSILON..sup.N +S.sub.i (Z.sub.gi is the value of an ith set (i represents natural numbers equal to or greater than a predetermined number)) and for adding the intermediate sum S.sub.i corresponding to the ith set to an intermediate carry C.sub.i-1 corresponding to an (i-1)th set for each value of i and a selection circuit for selecting one of one or more numbers having the same format as that of the intermediate carry C.sub.i corresponding to the ith set and for outputting the selected number to the recoding circuit as the intermediate carry C.sub.i-1 corresponding to the (i-1)th set.Type: GrantFiled: August 7, 1991Date of Patent: February 22, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Miyoshi, Takashi Taniguchi
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Patent number: 5282156Abstract: A floating point addition/subtraction apparatus is internally provided with a leading one anticipator having redundant binary numeral generators, intermediate-carry/intermediate-sum generators, and scan-value generators. Each of the redundant binary numeral generators performs a subtraction with respect to two binary operands, a binary minuend and a binary subtrahend, to generate a redundant binary numeral Zsd having "-1", "0" or "1" at each digit thereof. Each of the intermediate-carry/intermediate-sum generators generates an intermediate carry C.sub.k and an intermediate sum S.sub.k in accordance with Zsd.sub.k =2C.sub.k +S.sub.k using a redundant binary numeral Zsd.sub.k positioned at a k.sup.th digit from a least significant digit of the redundant binary numeral Zsd and a redundant binary numeral Zsd.sub.k+1 positioned at a (k+1).sup.th digit so that C.sub.k =Zsd.sub.k when Zsd.sub.k+1 ="1" or "-1" and C.sub.k =0 when Zsd.sub.k+1 ="0".Type: GrantFiled: January 27, 1992Date of Patent: January 25, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Miyoshi, Takashi Taniguchi
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Patent number: 5247656Abstract: A data processing device includes first and second blocks which have different processing times and which operate in synchronism with a clock signal. One of the first and second blocks is selected and enabled in accordance with an instruction representing which of the first and second blocks should be selected and enabled. A clock change signal is generated on the basis of the instruction. A period of the clock signal is changed in accordance with the clock change signal.Type: GrantFiled: May 23, 1990Date of Patent: September 21, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideyuki Kabuo, Hisakazu Edamatsu, Takashi Taniguchi
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Patent number: 5212661Abstract: An approximate solution Ya of a function F with respect to a given value X is derived by referring to a relation Y=F(X) at an accuracy at which an error between the approximate solution Ya and an infinitely precise solution Y is smaller than a weight of a digit in a place lower than a lowest place of significant digits for a final solution by two places. The approximate solution Ya is rounded to an interim solution Yr equal to one of possible interim solutions which is closest to the approximate solution Ya. A value Xr is derived from the interim solution Yr and an inverse function F.sup.-1 by referring to a relation Xr=F.sup.-1 (Yr). A sticky digit S is set to 0, 1, or -1 in response to the relation between the magnitudes of the values X and Xr and other information. The sticky digit S is added to a place immediately lower than a lowest place of the interim solution Yr. A result of this addition is rounded in a designated rounding mode to obtain the final solution.Type: GrantFiled: October 11, 1990Date of Patent: May 18, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Takashi Taniguchi
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Patent number: 5206825Abstract: This an arithmetic processor which represents internal arithmetic operands as signed-digit numbers, each digit of which may have either positive, zero, or negative values and which executes addition of a plurality of numbers each of whose most significant digit is offset with respect to the other numbers. The arithmetic processor includes an adder tree which is so constituted that a pair of said plurality of numbers are added to obtain a partial sum and further pairs of partial sums are successively added to obtain a final sum of all numbers.Type: GrantFiled: March 24, 1992Date of Patent: April 27, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Naofumi Takagi, Tsuguyasu Hatsuda, Toru Kakiage, Takashi Taniguchi, Tamotsu Nishiyama
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Patent number: 5202217Abstract: A positive resist composition comprising an aromatic group-containing alkali-soluble resin and a compound having an ammonium salt as skeleton, as the main components.Type: GrantFiled: August 3, 1990Date of Patent: April 13, 1993Assignee: Tosoh CorporationInventors: Masaaki Todoko, Takashi Taniguchi, Toru Seita, Shinji Sato, Katuya Shibata
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Patent number: 5166345Abstract: A novel photochromic compound and a polymer comprising the photochromic compound are disclosed. The novel photochromic compound of the present invention is a spirooxazine compound having an addition polymerizable organic functional group or a ring-opening polymerizable organic functional group therein.Type: GrantFiled: August 7, 1991Date of Patent: November 24, 1992Assignee: Toray Industries, Inc.Inventors: Ryojiro Akashi, Takashi Taniguchi
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Patent number: 5163168Abstract: A pulse signal generator includes a first delay device for delaying an input pulse signal and converting the input signal into a first intermediate signal. A power supply voltage detector detects a power supply voltage and outputs a signal representative thereof. A second delay device serves to delay the first intermediate signal and to convert the first intermediate signal into a second intermediate signal in response to the output signal from the power supply voltage detector. A logic OR operation is executed between the first and second intermediate signals, and an output signal is generated in response to the first and second intermediate signals. The output signal has a pulse width, which is greater than a pulse width of the input signal when the power supply voltage lies in a predetermined range.Type: GrantFiled: March 26, 1991Date of Patent: November 10, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshige Hirano, Takashi Taniguchi
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Patent number: 5157540Abstract: An all solid type electrochromic display device comprises first and second conductive layers and sandwiched between them, at least, an electrochromic layer of tungsten oxide and a solid electrolyte layer. The tungsten oxide of the electrochromic layer has an absorption spectrum, as measured by FT-IR, which meets the following formulae (A) and (B): ##EQU1## wherein A1400, A1800, A2500 and A4000 and A3400 respectively represent the absorbance of 1400cm.sup.- 1800cm.sup.-1, 2500cm.sup.-1, 4000cm.sup.-1 and 3400cm.sup.-1 and A* represents the highest absorbance within a range from 1600cm.sup.-1 to 1650cm.sup.-1. The electrochromic display device is produced by vacuum depositing the tungsten oxide electrochromic layer on another layer.Type: GrantFiled: January 3, 1991Date of Patent: October 20, 1992Assignee: Toray Industries, Inc.Inventors: Masayuki Kidai, Takashi Taniguchi
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Patent number: 5153847Abstract: This invention discloses an arithmetic processor which represents internal arithmetic operands as signed-digit numbers, each digit of which may have either positive, zero, or negative values and which executes addition of a plurality of numbers each of whose most significant digit is offset with respect to the other numbers. The arithmetic processor includes an adder tree which is so constituted that a pair of said plurality of numbers are added to obtain a partial sum and further pairs of partial sums are successively added to obtain a final sum of all numbers.Type: GrantFiled: October 16, 1990Date of Patent: October 6, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Naofumi Takagi, Tsuguyasu Hatsuda, Toru Kakiage, Takashi Taniguchi, Tamotsu Nishiyama
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Patent number: 5146419Abstract: A floating point addition-subtraction apparatus for adding or subtracting data having a floating point format including a mantissa operand, an exponent operand, and a sign operand. The operands are shifted right or left depending on operational status.Type: GrantFiled: November 26, 1990Date of Patent: September 8, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Miyoshi, Takashi Taniguchi
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Patent number: 5134021Abstract: Disclosed is an anti-fogging film having a multilayer structure comprised of at least two layers of a cured film formed on a substrate. The cured film contains as main components (A) polyvinyl alcohol and (B) at least one member selected from (a) colloidal silica having an average particle size of 5 to 200 m.mu., (b) an organic silicon compound of the formula R.sup.1 R.sup.2.sub.a SiX.sub.3-a in which R.sup.1 is an organic group having 1 to 10 carbon atoms, R.sup.2 is a hydrocarbon group having 1 to 6 carbon atoms, X is a hydrolyzable group and a is 0 or 1, and (c) a hydrolysis product of an organic silicon compound of the formula R.sup.1 R.sup.2.sub. SiX.sub.3-a in which R.sup.1, R.sup.2, X and a are as defined above, wherein the ratio S.sub.2 /S.sub.1 of the weight ratio S.sub.2 of component (A) to component (B) in the layer contiguous to the topmost surface layer to the weight ratio S.sub.1 of component (A) to component (B) in the topmost surface layer is at least 1.05.Type: GrantFiled: January 23, 1990Date of Patent: July 28, 1992Assignee: Toray Industries, Inc.Inventors: Hiroshi Hosono, Takashi Taniguchi
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Patent number: 5122981Abstract: A floating point processor comprises a first arithmetic unit that adds to or substracts from a first fraction of a first floating point member, a second fraction of a second floating point member. The second number has a weight of corresponding bits equal to that of the first floating point number by being right shifted. The exponent of the second number is less than that of the first number. A second arithmetic unit performs the same adding or substracting operation that the first arithmetic unit performs on the first fraction and the sum of the second fraction and adds the resultant to "1". An inverter reverses every bit derived by the second arithmetic unit. Outputs of the first and second arithmetic units and inverter are supplied to a selector.Type: GrantFiled: March 23, 1989Date of Patent: June 16, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Takashi Taniguchi
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Patent number: 5075133Abstract: An anti-fogging coating having a good and durable anti-fogging property is prepared by coating a composition comprised of as main components, (A) a polyvinyl alcohol, (B) a crosslinking agent, (C) water and (D) a nitrogen-containing organic solvent on a substrate, and heat-curing the coated composition.Type: GrantFiled: July 27, 1990Date of Patent: December 24, 1991Assignee: Toray Industries, Inc.Inventors: Hiroshi Hosono, Takashi Taniguchi, Michiaki Nishii
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Patent number: 5053998Abstract: A sense amplifier is driven by two sense amplifier drivers which operate at a different timing from each other. This can prevent the increase of the peak value of an instantaneous current in the operation of the plurality of differential amplifiers, thus resulting in ensuring that the potential of the signal line connected to the sense amplifier will be changed in a rapid manner. This may bring about a solution of the problem of the delay in timing of starting of specific differential amplifiers so as to enable correct data to be transmitted to the next circuit at all times. Furthermore, by connecting the sense amplifier drivers to opposite ends of the restore and drive signal lines, respectively, the wiring resistance of the restore and drive signal lines may be substantially reduced, thereby improving precise high speed data transmission.Type: GrantFiled: March 15, 1990Date of Patent: October 1, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasushi Kannan, Takashi Taniguchi, Michiharu Shikata, Tatsumi Sumi
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Patent number: 4963417Abstract: A pressure-sensitive tablet having desired sensitivity, excellent durability, and a good appearance. The pressure-sensitive tablet comprises an electro-conductive substrate; deformable insulative particles with an average diameter of 0.1 .mu.m to 100 .mu.m, which are distributed on the substrate and an electron-conductive film superimposed on the deformable particles.Type: GrantFiled: July 1, 1988Date of Patent: October 16, 1990Assignee: Toray Industries, Inc.Inventors: Takashi Taniguchi, Shoichi Kurasaki, Koichiro Oka
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Patent number: 4954215Abstract: This invention relates to a method for manufacturing a highly reliable stress detector. Conventionally, a step of bonding and securing magnetic elements (4) to a driven shaft (1) receiving a stress was needed, so that a high technique was needed to secure the magnetic elements (4) uniformly at the entire surface and transversely symmetrically, disadvantageously increasing the process cost.The present invention therefore has as its object the manufacture of a reliable stress detector by simplifying the process of securing the magnetic elements (4) and realizing a good attachment. According to this invention, a strip of magnetic thin sheet is secured around the driven shaft receiving a stress, and a selective coating removal treatment is applied to the magnetic thin sheet secured to the driven shaft to form magnetic elements parallelly arranged at a predetermined angle relative to the central axis of the driven shaft.Type: GrantFiled: May 5, 1989Date of Patent: September 4, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Satou, Yoshihiko Utsui, Kiyotugu Tuneyoshi, Takashi Taniguchi, Kousuke Haraga, Keitarou Tsukui
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Patent number: 4940602Abstract: An anti-reflection optical article which has an excellent anti-reflection properties, scratch resistance, impact resistance, flexibility, anti-static properties and weatherability, and which is easy to dye is disclosed. The anti-reflection optical article of the present invention comprises a transparent plastic substrate; a hard coat film formed on a surface of the substrate, the film having an index of refraction of not less than 1.52; and a fluorine-containing organopolysiloxane-based film with a thickness of 10 nm to 500 nm, which has an index of refraction lower than that of the hard coat film by not less than 0.02, and which is formed on the hard coat film.Type: GrantFiled: August 25, 1989Date of Patent: July 10, 1990Assignee: Toray Industries, Inc.Inventors: Takashi Taniguchi, Tetsuya Seki
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Patent number: 4935263Abstract: A strain detector which has a driven shaft for receiving a stress; a high magnetostrictive rate magnetic layer made of one of Co--B, Co--P, Co--Ni--B, Ni--Fe--P, and Co--Ni--P formed by electroless plating on the outer periphery of the driven shaft; and a detecting coil disposed through a gap on the periphery of the magnetic layer for detecting a variation in the permeability by a strain responsive to the stress of the magnetic layer, a method for manufacturing the strain detector which has the steps of forming a high magnetostrictive plating layer made of one of Co--B, Co--P, Co--Ni--B, Ni--Fe--P and Co--Ni--P by electroless plating on the periphery of the driven shaft; and selectively removing the plating layer to obtain a magnetic layer made of a plurality of magnetic pieces aligned in parallel at a predetermined angle with respect to the central axis of the driven shaft.Type: GrantFiled: December 16, 1988Date of Patent: June 19, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Satoh, Yoshihiko Utsui, Kuraki Kitazaki, Takashi Taniguchi, Kiyoshi Hayashi