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).

  • Patent number: 8891945
    Abstract: 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: Grant
    Filed: September 16, 2011
    Date of Patent: November 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Satoshi Teshiba, Yusuke Shiroyama, Futoshi Ushio, Tadayoshi Ishikawa
  • Publication number: 20120066188
    Abstract: 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: Application
    Filed: September 16, 2011
    Publication date: March 15, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Satoshi TESHIBA, Yusuke SHIROYAMA, Futoshi USHIO, Tadayoshi ISHIKAWA
  • Publication number: 20090310452
    Abstract: 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: Application
    Filed: August 20, 2009
    Publication date: December 17, 2009
    Applicant: Panasonic Corporation
    Inventors: Tadayoshi ISHIKAWA, Kouji KITAMURA, Noriaki SASAKI, Katsutoshi OHTA
  • Publication number: 20090051815
    Abstract: 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: Application
    Filed: January 15, 2007
    Publication date: February 26, 2009
    Inventor: Tadayoshi Ishikawa
  • Publication number: 20060285456
    Abstract: 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: Application
    Filed: June 15, 2006
    Publication date: December 21, 2006
    Inventors: Tadayoshi Ishikawa, Kouji Kitamura, Noriaki Sasaki, Katsutoshi Ohta
  • Patent number: 6664825
    Abstract: 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: Grant
    Filed: July 17, 2002
    Date of Patent: December 16, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tadayoshi Ishikawa, Junji Nakatsuka, Hiroya Ueno, Yoshinobu Tokuno
  • Publication number: 20030041234
    Abstract: 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: Application
    Filed: July 17, 2002
    Publication date: February 27, 2003
    Applicant: Matsushita Electric Industries, Ltd.
    Inventors: Tadayoshi Ishikawa, Junji Nakatsuka, Hiroya Ueno, Yoshinobu Tokuno
  • Publication number: 20020133064
    Abstract: 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: Application
    Filed: March 11, 2002
    Publication date: September 19, 2002
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroya Ueno, Junji Nakatsuka, Tadayoshi Ishikawa, Yoshinobu Tokuno
  • Patent number: 4833226
    Abstract: 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: Grant
    Filed: August 26, 1987
    Date of Patent: May 23, 1989
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Hidekazu Ishimura, Masahiko Otsuka, Yasushi Takahashi, Tadayoshi Ishikawa
  • Patent number: 4325856
    Abstract: 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: Grant
    Filed: January 2, 1980
    Date of Patent: April 20, 1982
    Assignee: The Dow Chemical Company
    Inventors: Tadayoshi Ishikawa, Do I. Lee