Patents by Inventor Tadashi Nakamura

Tadashi Nakamura 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: 7643193
    Abstract: An optical scanning apparatus includes a light source, a light source driving unit that turns on the light source according to image information, a deflector that deflects and scans a light beam emitted from the light source according to sinusoidal vibration, and a scanning/imaging optical system that guides the light beam from the deflector to a scanned surface. The scanning/imaging optical system satisfies two conditions, i.e., (1) provided that the deflector moves in such a manner that an angular velocity is constant, linearity is made larger at a most peripheral image height than at a central image height within a range of an effective writing width, and (2) when a deflection angle of the deflector has a sinusoidal characteristic, the linearity is made smaller at the most peripheral image height than at the central image height within the range of the effective writing width.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: January 5, 2010
    Assignee: Ricoh Company, Limited
    Inventors: Tadashi Nakamura, Yoshinori Hayashi, Naoki Miyatake
  • Patent number: 7629976
    Abstract: To provide a display device for enabling preferable Japanese hyphenation while suppressing restriction due to a character code system. A font data memory unit (50) stores font data which contains a plurality of font records each containing font information for displaying a character and line feed control information for controlling line feed conducted before and/or after the character. A character string display unit (54) displays a character string based on the font information relevant to all or some of the plurality of font records. A line feed control unit (52) determines a line feed position in the character string being displayed by the character string display unit (54) based on line feed control information relevant to characters included in the character string.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: December 8, 2009
    Assignee: Sony Computer Entertainment Inc.
    Inventors: Tadashi Nakamura, Hiroshi Ueno
  • Patent number: 7593588
    Abstract: An edge preservation type of recursive filter 12 outputs an unsharpened image (i.e., low-frequency components) which is smoothed while preserving an edge of an input image in at least one direction (e.g., a vertical direction of the image). The low-frequency components are compressed into a suitable amount by a LUT 14 provided as low-frequency component compression amount setting means and then output. An arithmetic unit 18 provided as low-frequency component compression means compresses the low-frequency components of the input image by subtracting from the input image the output value from the LUT 14. The edge-preservation-type recursive filter 12 can extract the low-frequency components of the input image with an input time delay corresponding to one line of the input image. Therefore, DRC processing has only a short delay due to image processing and is capable of real-time processing by a small amount of computation.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: September 22, 2009
    Assignee: Hitachi Medical Corporation
    Inventors: Shuji Sugeno, Shigeyuki Ikeda, Tadashi Nakamura
  • Publication number: 20090233555
    Abstract: A radio communication apparatus having a first antenna and a second antenna, includes an interference estimation unit configured to estimate, using a signal of a second frequency band received by the second antenna, an interference component in the second frequency band contained in a signal of a first frequency band, and an interference removing unit configured to remove, based on information on the interference component estimated by the interference estimation unit, the interference component in the second frequency band contained in the signal of the first frequency band received by the first antenna.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 17, 2009
    Applicant: FUJITSU LIMITED
    Inventor: Tadashi Nakamura
  • Publication number: 20090229862
    Abstract: A plurality of double-sided boards using a film are attached to each other with a paste coupling layer sandwiched therebetween. In the paste coupling layer, a conductive paste is filled into a through hole formed in provisionally hardened resin, which is hardened. At the same time, second wirings are electrically coupled to each other by using the hardened conductive paste filled in the through holes that have been previously formed in the paste coupling layer. Thus, it is possible to provide a thinned multilayer printed wiring board without using an adhesive.
    Type: Application
    Filed: November 7, 2006
    Publication date: September 17, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tadashi Nakamura, Fumio Echigo, Shogo Hirai, Toshio Sugawa
  • Patent number: 7589878
    Abstract: A common photodetecting unit detects a plurality of beams scanned by a plurality of polyhedral reflection mirrors provided in a multiple stages with a common rotation axis, and generates a synchronization detection signal based on detected beams. The reflection mirrors make a predetermined angle ?1 in a direction of rotation of the reflection mirrors. When time between two consecutive synchronization detection signals on a time line generated by the common photodetecting unit is ti, where i is a positive integer equal to or smaller than number of split beams, at least one of ti is different from others.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: September 15, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadashi Nakamura, Yoshinori Hayashi
  • Publication number: 20090226851
    Abstract: A polymer contains a constituent unit having a specific acetal skeleton. This polymer is able to be used as a resist resin in DUV excimer laser lithography, electron beam lithography, EUV lithography, or the like.
    Type: Application
    Filed: February 26, 2009
    Publication date: September 10, 2009
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Atsushi Ootake, Tadashi Nakamura
  • Publication number: 20090201358
    Abstract: An optical scanning device includes a light source; a light source driving unit configured to modulate/drive the light source; a pulse width information holding unit configured to hold pulse width information items of predetermined pixels corresponding to scanning positions on a scan target surface; a deflecting unit including a reflection surface configured to deflect/scan a light beam from the light source; and a scan-imaging optical system configured to image the light beam deflected by the deflecting unit on the scan target surface. The pulse width information holding unit holds the pulse width information items which cancel out deviations of main scanning beam spot diameters among the scanning positions on the scan target surface; and the light source driving unit drives the light source based on the pulse width information items held by the pulse width information holding unit.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 13, 2009
    Inventor: Tadashi NAKAMURA
  • Publication number: 20090198065
    Abstract: To provide a resist polymer comprising, as a structural unit, an acid-decomposable unit having a structure represented by formula (1) or (2) which exhibits a small line edge roughness and produces little defects in DUV excimer laser lithography or the like.
    Type: Application
    Filed: March 26, 2009
    Publication date: August 6, 2009
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Hikaru Momose, Atsushi Ootake, Tadashi Nakamura, Akifumi Ueda
  • Publication number: 20090175017
    Abstract: An upper board having an opening and forming a circuit on a surface layer, a connection sheet between boards having an opening and forming conductive holes filled with conductive paste in through-holes, and a lower board forming a circuit on a surface layer are stacked up, heated and pressed. In particular, the connection sheet between boards is made of a material different from the upper board and the lower board. A multi-layer circuit board having a cavity structure, and a full-layer IVH structure with high interlayer connection reliability can be manufactured.
    Type: Application
    Filed: May 28, 2008
    Publication date: July 9, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Takayuki Kita, Masaaki Katsumata, Tadashi Nakamura, Kota Fukasawa, Kazuhiro Furugoori
  • Publication number: 20090152781
    Abstract: A vibration-isolating device for a steering wheel of a travelling working vehicle equipped with a wheel steering mechanism includes a first steering shaft (32) that transmits rotational displacement, the first steering shaft being operatively connected to the steering wheel (7); a second steering shaft (33) that transmits rotational displacement, the second steering shaft being operatively connected to the wheel steering mechanism (P, 23); and a vibration-isolating connecting mechanism (31) that operatively connects the first steering shaft (32) and the second steering shaft (33) to each other so that rotational displacement can be transmitted. When the angles of rotational displacement of the first steering shaft (32) and the second steering shaft (33) are within ranges of rotation angles for linearly driving the vehicle, rotational displacement cannot be transmitted between the first steering shaft (32) and the second steering shaft (33).
    Type: Application
    Filed: September 17, 2008
    Publication date: June 18, 2009
    Applicant: Kubota Corporation
    Inventors: Nobuyuki Yoshii, Kiyoshige Maezawa, Tadashi Nakamura, Hiroki Fukudome
  • Publication number: 20090139761
    Abstract: A multilayer printed wiring board is characterized in that the interlayer connection material in the via holes has a lower coefficient of thermal expansion in the thickness direction than the electrically insulating substrate made of insulating material; the interlayer connection is formed at a temperature higher than the operating temperature; and the interlayer connection material is larger in thickness than the interlayer connection material of the same wiring layer at normal temperature. This causes a difference in the coefficient of thermal expansion between the different materials in the thickness direction of the printed wiring board in the environment in which it is used resulting in high connection reliability.
    Type: Application
    Filed: April 2, 2007
    Publication date: June 4, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Fumio Echigo, Shogo Hirai, Tadashi Nakamura
  • Publication number: 20090074459
    Abstract: A common photodetecting unit detects a plurality of beams scanned by a plurality of polyhedral reflection mirrors provided in a multiple stages with a common rotation axis, and generates a synchronization detection signal based on detected beams. The reflection mirrors make a predetermined angle ?1 in a direction of rotation of the reflection mirrors. When time between two consecutive synchronization detection signals on a time line generated by the common photodetecting unit is ti, where i is a positive integer equal to or smaller than number of split beams, at least one of ti is different from others.
    Type: Application
    Filed: November 25, 2008
    Publication date: March 19, 2009
    Inventors: Tadashi Nakamura, Yoshinori Hayashi
  • Publication number: 20090073523
    Abstract: In an optical scanning device, a light-source driving unit drives a light source to modulate a light beam in units of single dot, a deflecting unit deflects the light beam, and a scanning optical system guides the deflected light beam to a scanning surface having an active writing area for forming an image. A static beam spot size, which is a beam spot size of the light beam on the scanning surface when the light beam passes a predetermined image height, is set such that a scanning beam spot size, which is a beam spot size of the light beam on the scanning surface when the light beam is moved to scan during the light beam exposes a single dot, is kept substantially constant.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 19, 2009
    Inventor: Tadashi NAKAMURA
  • Patent number: 7496015
    Abstract: A drive apparatus of the present invention includes a recording/reproduction section and a drive control section. The drive control section performs a process including: determining whether or not replacement management information including a replacement physical address is found in the replacement management information list, the replacement physical address matching the physical address corresponding to the logical address included in the recording instruction, when the replacement management information is not found, as a first time pseudo-overwrite recording for a location indicated by the physical address corresponding to the logical address included in the recording instruction, performing a process; and when the replacement management information is found, as a second time or more pseudo-overwrite recording for a location indicated by the physical address corresponding to the logical address included in the recording instruction, performing a process.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: February 24, 2009
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Tadashi Nakamura
  • Publication number: 20090047312
    Abstract: The present invention provides a microgel having a mean particle size of 0.1-1,000 ?m, the microgel being produced from a gel which is formed by use of a hydrophilic compound capable of forming a gel. An external composition containing the microgel provides an excellent sensation during use; i.e., the composition provides neither sticky sensation during use nor frictional sensation. Furthermore, even when a large amount of a pharmaceutical ingredient, such as a whitening ingredient, or a salt is incorporated into the composition, the viscosity of the composition is not lowered, and the composition exhibits excellent viscosity increasing property. In addition, the composition exhibits long-term stability, without inviting separation of water.
    Type: Application
    Filed: April 9, 2008
    Publication date: February 19, 2009
    Applicant: Shiseido Co., Ltd.
    Inventors: Kazuyuki Miyazawa, Isamu Kaneda, Toshio Yanaki, Tadashi Nakamura, Masatoshi Ochiai, Tomoyuki Kawasoe
  • Publication number: 20090022020
    Abstract: A drive apparatus of the present invention includes a recording/reproduction section and a drive control section. The drive control section performs a process including: determining whether or not replacement management information including a replacement physical address is found in the replacement management information list, the replacement physical address matching the physical address corresponding to the logical address included in the recording instruction, when the replacement management information is not found, as a first time pseudo-overwrite recording for a location indicated by the physical address corresponding to the logical address included in the recording instruction, performing a process; and when the replacement management information is found, as a second time or more pseudo-overwrite recording for a location indicated by the physical address corresponding to the logical address included in the recording instruction, performing a process.
    Type: Application
    Filed: September 22, 2008
    Publication date: January 22, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventor: Tadashi Nakamura
  • Publication number: 20090022019
    Abstract: A drive apparatus of the present invention includes a recording/reproduction section and a drive control section. The drive control section performs a process including: determining whether or not replacement management information including a replacement physical address is found in the replacement management information list, the replacement physical address matching the physical address corresponding to the logical address included in the recording instruction, when the replacement management information is not found, as a first time pseudo-overwrite recording for a location indicated by the physical address corresponding to the logical address included in the recording instruction, performing a process; and when the replacement management information is found, as a second time or more pseudo-overwrite recording for a location indicated by the physical address corresponding to the logical address included in the recording instruction, performing a process.
    Type: Application
    Filed: September 22, 2008
    Publication date: January 22, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventor: Tadashi Nakamura
  • Publication number: 20090016181
    Abstract: The recording apparatus (300A) of the present invention includes a drive apparatus (320). The drive apparatus (320) includes a head section (334) for performing a recording operation or a reproduction operation for an information recording medium (100) and a drive control section (331) for controlling the head section (334). The drive control section (331) receives an update instruction including a third address indicating at least a part of the locations of the information recording medium (100) at which the first address information is recorded and the second address information.
    Type: Application
    Filed: March 23, 2005
    Publication date: January 15, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tadashi Nakamura, Yoshiho Gotoh
  • Publication number: 20090015897
    Abstract: An optical scan apparatus is configured to include a light source emitting a light beam; a vibration mirror deflecting the light beam emitted from the light source to scan a scan area; a drive unit driving the vibration mirror; and an optical imaging system focusing the light beam deflected by the vibration mirror on a predetermined focus position, and having optical power to correct a displacement of the focus position which occurs due to a deformation of the vibration mirror caused by its own vibration.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 15, 2009
    Inventors: Tadashi NAKAMURA, Tomohiro NAKAJIMA