Patents by Inventor Tadayoshi Ishikawa
Tadayoshi Ishikawa 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: 8891945Abstract: A recording/reproducing method includes: reading a first uncompressed data from a first recording medium; reading the first uncompressed data from a buffer memory at a speed higher than a normal reproduction speed and compressing the read first uncompressed data to generate a compressed data; and recording the generated compressed data in a second recording medium; determining whether a predefined unit volume of compressed data is recorded in the second recording medium; and when it is determined that the predefined unit volume of compressed data is not yet recorded in the second recording medium, generating a second uncompressed data by reading the compressed data from the second recording medium at a speed higher than the normal reproduction speed and decompressing the read compressed data when it is determined that the predefined unit volume of compressed data is already recorded in the second recording medium.Type: GrantFiled: September 16, 2011Date of Patent: November 18, 2014Assignee: Panasonic CorporationInventors: Satoshi Teshiba, Yusuke Shiroyama, Futoshi Ushio, Tadayoshi Ishikawa
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Publication number: 20120066188Abstract: A recording/reproducing method includes: reading a first uncompressed data from a first recording medium; reading the first uncompressed data from a buffer memory at a speed higher than a normal reproduction speed and compressing the read first uncompressed data to generate a compressed data; and recording the generated compressed data in a second recording medium; determining whether a predefined unit volume of compressed data is recorded in the second recording medium; and when it is determined that the predefined unit volume of compressed data is not yet recorded in the second recording medium, generating a second uncompressed data by reading the compressed data from the second recording medium at a speed higher than the normal reproduction speed and decompressing the read compressed data when it is determined that the predefined unit volume of compressed data is already recorded in the second recording medium.Type: ApplicationFiled: September 16, 2011Publication date: March 15, 2012Applicant: PANASONIC CORPORATIONInventors: Satoshi TESHIBA, Yusuke SHIROYAMA, Futoshi USHIO, Tadayoshi ISHIKAWA
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Publication number: 20090310452Abstract: An optical disc signal processing apparatus is provided which comprises a rotation control section for measuring and outputting the number of edges within a predetermined time for a binary signal obtained from an RF signal reproduced from an optical disc on which information is recorded, a detecting section for detecting a missing portion of the RF signal, and a parameter control section for, when a missing portion of the RF signal is not detected, calculating and outputting a rotation control parameter for controlling a rotation of the optical disc based on the number of edges obtained by the rotation control section, and when a missing portion of the RF signal is detected, controlling the rotation control parameter so that an influence of the missing portion of the RF signal is suppressed.Type: ApplicationFiled: August 20, 2009Publication date: December 17, 2009Applicant: Panasonic CorporationInventors: Tadayoshi ISHIKAWA, Kouji KITAMURA, Noriaki SASAKI, Katsutoshi OHTA
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Publication number: 20090051815Abstract: A video decoder 107 decodes an inputted video signal to output video information. A microcomputer 108 reads only specific compressed font data from a ROM 104 in which compressed font data is stored, decompresses the read compressed font data sequentially and stores the decompressed font data into a RAM 105. The microcomputer 108 also generates information to be superimposed on the video information by combining decompressed font data and stores the superimposition information into the RAM 105. A video synthesis section 111 superimposes the superimposition information stored in the RAM 105 on the video information.Type: ApplicationFiled: January 15, 2007Publication date: February 26, 2009Inventor: Tadayoshi Ishikawa
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Publication number: 20060285456Abstract: An optical disc signal processing apparatus is provided which comprises a rotation control section for measuring and outputting the number of edges within a predetermined time for a binary signal obtained from an RF signal reproduced from an optical disc on which information is recorded, a detecting section for detecting a missing portion of the RF signal, and a parameter control section for, when a missing portion of the RF signal is not detected, calculating and outputting a rotation control parameter for controlling a rotation of the optical disc based on the number of edges obtained by the rotation control section, and when a missing portion of the RF signal is detected, controlling the rotation control parameter so that an influence of the missing portion of the RF signal is suppressed.Type: ApplicationFiled: June 15, 2006Publication date: December 21, 2006Inventors: Tadayoshi Ishikawa, Kouji Kitamura, Noriaki Sasaki, Katsutoshi Ohta
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Patent number: 6664825Abstract: The reset function incorporated microcomputer of the present invention, capable of suppressing a variation in reset voltage with a simple configuration, includes a reset decision section. In the reset decision section, a band gap reference circuit generates a predetermined reference voltage VA. A voltage dividing resistance generates a reset voltage VR from the reference voltage VA. A comparator compares the supply voltage VDD applied to the microcomputer with the reset voltage VR, and outputs a reset signal SR.Type: GrantFiled: July 17, 2002Date of Patent: December 16, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tadayoshi Ishikawa, Junji Nakatsuka, Hiroya Ueno, Yoshinobu Tokuno
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Publication number: 20030041234Abstract: The reset function incorporated microcomputer of the present invention, capable of suppressing a variation in reset voltage with a simple configuration, includes a reset decision section. In the reset decision section, a band gap reference circuit generates a predetermined reference voltage VA. A voltage dividing resistance generates a reset voltage VR from the reference voltage VA. A comparator compares the supply voltage VDD applied to the microcomputer with the reset voltage VR, and outputs a reset signal SR.Type: ApplicationFiled: July 17, 2002Publication date: February 27, 2003Applicant: Matsushita Electric Industries, Ltd.Inventors: Tadayoshi Ishikawa, Junji Nakatsuka, Hiroya Ueno, Yoshinobu Tokuno
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Publication number: 20020133064Abstract: A &Dgr;&Sgr;-type analog-digital (A-D) converter is used for A-D conversion of a blood sugar level measured by a blood sugar sensor. This enables an accurate measurement result to be obtained with improved resolution. Using the measurement result of an offset voltage in a current-voltage converter enables compensation for the offset voltage. Moreover, using the measurement result of a blood sugar level obtained with a current being applied to a dummy resistor, i.e., an element that simulates electric characteristics of the blood sugar level sensor, enables compensation for variation in the measured value between individual devices resulting from manufacturing variation. As a result, a more precise blood sugar level measuring device having higher measurement accuracy can be implemented.Type: ApplicationFiled: March 11, 2002Publication date: September 19, 2002Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroya Ueno, Junji Nakatsuka, Tadayoshi Ishikawa, Yoshinobu Tokuno
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Patent number: 4833226Abstract: A master batch of hardener for curable one-package epoxy resin system which comprises (I) a hardener consisting of(I) a hardener consisting of(i) a powder of an amine compound (A) as a core having at least one tertiary amino group in the molecule while having no primary and secondary amino groups, the powder having both a group (X) capable of absorbing infrared rays of 1630 to 1680 cm.sup.-1 in wave length and a group (Y) capable of absorbing infrared rays of 1680 to 1725 cm.sup.-1 in wave length at least on the surface of the powder, and(ii) a reaction product of the amine compound (A) and an epoxy resin as a shell; and(II) an epoxy resin (B) in a ratio of 10 to 50,000 parts by weight to 100 parts by weight of the hardener (I).A hardener containing the master batch is also disclosed.Type: GrantFiled: August 26, 1987Date of Patent: May 23, 1989Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hidekazu Ishimura, Masahiko Otsuka, Yasushi Takahashi, Tadayoshi Ishikawa
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Patent number: 4325856Abstract: Aqueous copolymer latexes comprising colloidally dispersed, substantially spheroidal copolymer particles having a predominantly hydrophobic core portion and having a relatively hydrophilic polymeric portion which is preferentially oriented toward the outer surface thereof (e.g., a relatively hydrophilic shell portion) are prepared by (a) first emulsion polymerizing an initial monomer charge to form a first aqueous latex of a substantially linear, relatively hydrophilic polymer and (b) thereafter emulsion polymerizing a major proportion (e.g., from about 50 to about 95 parts by weight) of a second (and relatively more hydrophobic) monomer charge in the presence of a minor proportion (e.g., from about 5 to about 50 parts by weight on a polymer solids basis) of said first, relatively hydrophilic polymer latex.Type: GrantFiled: January 2, 1980Date of Patent: April 20, 1982Assignee: The Dow Chemical CompanyInventors: Tadayoshi Ishikawa, Do I. Lee