Patents by Inventor Yuji Matsuda

Yuji Matsuda 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).

  • Publication number: 20060133873
    Abstract: An endless belt is spanned around at least one driving member and at least one supporting member. The driving member is driven by a pulse motor. An angular displacement of the driving member is detected, a difference between detected angular displacement and a target angular displacement is calculated, a frequency of a driving pulse used to drive the pulse motor is calculated based on the difference and a reference driving pulse frequency, and the pulse motor is controlled based on a driving pulse with calculated frequency. The target angular displacement is set so as to cancel a specific velocity fluctuation component of a surface velocity of the belt produced when the drive member is rotated at a constant angular velocity and that is smaller than amount of surface movement of the belt in one driving pulse.
    Type: Application
    Filed: December 20, 2005
    Publication date: June 22, 2006
    Inventors: Toshiyuki Andoh, Hiromichi Matsuda, Nobuto Yokokawa, Ryoji Imai, Yuji Matsuda, Hiroshi Okamura, Kazuhiko Kobayashi, Yohei Miura, Masato Yokoyama
  • Publication number: 20060110189
    Abstract: To compensate for the variation in the output signal from an encoder due to the variation in the thickness of an endless belt, an apparatus includes: a detector that detects a reference position on the endless belt; a correction-value calculating unit that calculates a correction value for each position on the endless belt based on the thickness; and a target-value calculating unit that adjusts a target value for controlling a driving motor based on the correction value corresponding to a distance from the reference position to the current position.
    Type: Application
    Filed: August 15, 2005
    Publication date: May 25, 2006
    Inventors: Yuji Matsuda, Hiromichi Matsuda, Toshiyuki Andoh, Nobuto Yokokawa, Ryoji Imai, Hiroshi Okamura, Masato Yokoyama, Kazuhiko Kobayashi, Yohei Miura
  • Patent number: 7014289
    Abstract: A head (101) prints a predetermined test pattern under the control of a head control unit (204) in order to precisely detect a head deviation when a head has been changed, the printed test pattern is read by a sensor 110 and detected by a pattern detector (209). Every time an interrupt signal corresponding to the edge of a detected pattern element is input to the CPU (203), a value of a main scanning counter (205)/main scanning timer (207) (and/or a sub-scanning counter (206)/sub-scanning timer (208)) is read, the printing position of each pattern element is detected from the value, and the mounting deviation of the head is calculated based on the detection result of the printing position of each pattern element printed by the head. The vertical bar of a test pattern may be printed in multiple passes. A plurality of edges may be detected at different longitudinal positions of the bar and the detected results are averaged to determine an edge position.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: March 21, 2006
    Assignee: Canon Finetech Inc.
    Inventor: Yuji Matsuda
  • Patent number: 7006418
    Abstract: Monitor circuits monitor junction temperatures of chips of driver ICs which drive a driving part of a recording/reproduction system. Comparison circuits compare the junction temperatures with respective arbitrarily set temperatures to output temperature flags as comparison results and are included in the driver ICs. A CPU monitors the temperature flags to confirm febrile states of the respective driver ICs, thereby performing a control so as to continue to drive an optical disk device when the junction temperatures of the chips of the driver ICs are lower than the set temperatures, and to suppress heat generation of the respective driver ICs when the temperatures are equal to or higher than the set temperatures.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: February 28, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Yuji Matsuda
  • Publication number: 20050275062
    Abstract: An object is to provide a technique to facilitate an identification of a semiconductor bare chip. To achieve this object, the semiconductor bare chip includes a plurality of fuse elements f11 to f19 disposed, in a predetermined order, on a surface of a semiconductor substrate. ID information of the semiconductor bare chip is indicated by a combination of the order of the fuse elements and fusing status of the fuse elements, which indicate whether or not the respective fuse elements are fused.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 15, 2005
    Inventor: Yuji Matsuda
  • Publication number: 20050269483
    Abstract: Providing an imaging apparatus capable of suppressing deterioration of image qualities and output properties when a wafer thickness of the imaging apparatus is made thin. The imaging apparatus having one or more output circuits in series and a buffer circuit 6, and processing luminance signals from photodetectors to output image information, the buffer circuit performing impedance conversion on signals outputted from a final output circuit of the one or more output circuits, the final output circuit being a source follower circuit that has an active element and a current source circuit 5 which is inserted between a source terminal of the active element and a reference voltage terminal, wherein the current source circuit and the buffer circuit 6 are external to a solid-state image sensor 1 having the photodetectors, and a main part of the current source circuit 5 and a main part of the buffer circuit 6 are in a single package.
    Type: Application
    Filed: June 3, 2005
    Publication date: December 8, 2005
    Inventors: Akiyoshi Kohno, Yoshiaki Kato, Yuji Matsuda
  • Publication number: 20050238372
    Abstract: A color image forming apparatus including a plurality of photosensitive drums on which toner images of different colors are respectively formed. An endless belt confronts the plurality of photosensitive drums. A drive source drives rotation of the endless belt, or alternatively plural drive sources drive the photosensitive drums to individually rotate. A memory stores pre-measured characteristics of a color misregistration of a color image in a sub-scanning direction of the apparatus, the color image formed by transferring images from respective of the plurality of photosensitive drums. Further, a control unit changes an average running speed of the endless belt, or alternatively an average running speed of at least some of the photosensitive drums, by controlling the drive sources, to compensate for color misregistration, based on the stored characteristics of color misregistration. The belt can either transport a paper sheet or have a color image formed thereon as an intermediate transfer device.
    Type: Application
    Filed: April 13, 2005
    Publication date: October 27, 2005
    Inventors: Tadashi Shinohara, Masata Yokoyama, Kazuhiko Kobayashi, Yohei Miura, Toshiyuki Yakahashi, Yuji Matsuda, Jun Hosokawa, Nobuto Yokokawa, Toshiyuki Andoh
  • Patent number: 6838743
    Abstract: This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application device using the same.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: January 4, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuka Yamada, Takehito Yoshida, Shigeru Takeyama, Yuji Matsuda, Katsuhiko Mutoh
  • Patent number: 6730934
    Abstract: This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application device using the same.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: May 4, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuka Yamada, Takehito Yoshida, Shigeru Takeyama, Yuji Matsuda, Katsuhiko Mutoh
  • Publication number: 20030151107
    Abstract: This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application device using the same.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 14, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuka Yamada, Takehito Yoshida, Shigeru Takeyama, Yuji Matsuda, Katsuhiko Mutoh
  • Patent number: 6530639
    Abstract: A sensor configuration and signal processing, which are not affected by a paper rise when a print pattern for auto head shading and density correction is read, are provided. A predetermined print pattern is printed with a plurality of heads, and the predetermined pattern that is printed is scanned with a sensor (110) to detect a density unevenness for the print pattern in each color on a nozzle basis. The sensor (110) comprises a light emitting element which emits a light including all light regions, R, G, and B, and a plurality of light receiving elements each of which receives R, G, and B lights, respectively. The plurality of light receiving elements are arranged in a main scanning direction.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: March 11, 2003
    Assignee: Copyer Co., Ltd.
    Inventor: Yuji Matsuda
  • Publication number: 20020119826
    Abstract: A contents distribution system for a simulation ride system has a seat rocking unit, a video unit, an acoustic unit, and a simulation ride control apparatus. The simulation ride control apparatus has the simulation ride system controlling operations of the seat rocking unit, the video unit, and the acoustic unit by using content data, and a distribution apparatus for a ride contents administration center. The distribution apparatus for the ride contents administration center distributes the content data and the simulation ride control apparatus receives the distributed content data.
    Type: Application
    Filed: August 31, 2001
    Publication date: August 29, 2002
    Inventors: Yuji Matsuda, Tsukasa Shiina, Masayuki Oshiro, Kazuhide Ebine, Kenjiro Fujii, Katsumasa Nagai
  • Patent number: 6248133
    Abstract: A solid state imaging device has: a first polysilicon layer 901; a second polysilicon layer 902; a photoelectric converting portion or PD 903; a read gate 904; a read channel 905 (in this case, an N-layer) which is formed in a semiconductor below the read gate; a P-layer 906 which prevents a signal charge from erroneously entering a VCCD of a unit pixel adjacent in a horizontal direction; a P-layer 907 which defines the transfer channel region of a VCCD; and a VCCD 908 which transfers a signal charge in the direction of the arrows. A unit pixel 900 is indicated by a one-dot chain line. The two-dimensionally arrayed solid state imaging device is driven by driving pulses of eight phases in total, namely, a driving pulse &phgr;V1 911, a driving pulse &phgr;V2 912, a driving pulse &phgr;V3 913, a driving pulse &phgr;V4 914, a driving pulse &phgr;V5 915, a driving pulse &phgr;V6 916, a driving pulse &phgr;V7 917, and a driving pulse &phgr;V8 918.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: June 19, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyoshi Komobuchi, Akira Fukumoto, Takahiro Yamada, Takao Kuroda, Yuji Matsuda
  • Patent number: 6249314
    Abstract: A solid-state imaging apparatus includes a solid-state imaging device and a signal processing circuit. The solid-state imaging device includes: a plurality of photoelectric converting sections provided with color filters having different spectroscopic characteristics, and each converting light incident thereon into a charge and accumulating the charge, and a plurality of vertical charge transfer sections for vertically transferring the charge read from each of the photoelectric converting sections. A plurality of reading operations to read the charges accumulated in the photoelectric converting sections to the plurality of the vertical charge transfer sections are performed within a time duration for scanning an image for one image plane, and the charges read from the photoelectric converting sections are transferred through the vertical charge transfer section separately for each of the reading operations.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: June 19, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasutoshi Yamamoto, Masayuki Yoneyama, Hiroyoshi Komobuchi, Yuji Matsuda, Toshiya Fujii
  • Patent number: 6239453
    Abstract: This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application device using the same.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: May 29, 2001
    Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Electronics Corporation
    Inventors: Yuka Yamada, Takehito Yoshida, Shigeru Takeyama, Yuji Matsuda, Katsuhiko Mutoh
  • Publication number: 20010000335
    Abstract: This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application device using the same.
    Type: Application
    Filed: November 30, 2000
    Publication date: April 19, 2001
    Applicant: Matsushita Electric Industrial Co.
    Inventors: Yuka Yamada, Takehito Yoshida, Shigeru Takeyama, Yuji Matsuda, Katsuhiko Mutoh
  • Patent number: 6214163
    Abstract: A super microfibrillated cellulose having an arithmetic average fiber length of 0.05 to 0.1 mm, a water retention value of at least 350%, a rate of the number of fibers not longer than 0.25 mm of at least 95% based on the total number of the fibers as calculated by adding up, and an axial ratio of the fibers of at least 50. The super microfibrillated cellulose is produced by passing a slurry of a previously beaten pulp through a rubbing apparatus having two or more grinders which are arranged so that they can be rub together to microfibrillate the pulp to obtain microfibrillated cellulose and further super microfibrillate the obtained microfibrillated cellulose with a high-pressure homogenizer to obtain the super microfibrillated cellulose. A coated paper produced with a coating material containing the super microfibrillated cellulose, and a tinted paper produced from a paper stock containing the super microfibrillated cellulose as a carrier carrying a dye or pigment are also provided.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: April 10, 2001
    Assignee: Tokushu Paper Mfg. Co., Ltd.
    Inventors: Yuji Matsuda, Mariko Hirose, Katsuhiko Ueno
  • Patent number: 6183596
    Abstract: A super microfibrillated cellulose having an arithmetic average fiber length of 0.05 to 0.1 mm, a water retention value of at least 350%, a rate of the number of fibers not longer than 0.25 mm of at least 95% based on the total number of the fibers as calculated by adding up, and an axial ratio of the fibers of at least 50. The super microfibrillated cellulose is produced by passing a slurry of a previously beaten pulp through a rubbing apparatus having two or more grinders which are arranged so that they can be rub together to microfibrillate the pulp to obtain microfibrillated cellulose and further super microfibrillate the obtained microfibrillated cellulose with a high-pressure homogenizer to obtain the super microfibrillated cellulose. A coated paper produced with a coating material containing the super microfibrillated cellulose, and a tinted paper produced from a paper stock containing the super microfibrillated cellulose as a carrier carrying a dye or pigment are also provided.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: February 6, 2001
    Assignee: Tokushu Paper Mfg. Co., Ltd.
    Inventors: Yuji Matsuda, Mariko Hirose, Katsuhiko Ueno
  • Patent number: 6120196
    Abstract: According to the type of paper sheet specified through an operation unit (111) by the user, the environmental temperature detected by a thermistor (110), and the spacing between the paper sheet and a paper sensor, detected by a lift height sensor (113), respectively, the correction values for the start and end positions where the printing heads start and end the printing in a horizontal direction are beforehand stored in a memory (112). Before printing, a CPU (104) detects the paper edge positions of the paper sheet on the basis of the output from a paper sensor (303), and reads the corresponding correction values from the memory (112) according to the type of paper sheet, the environmental temperature and the lift height. A window control unit (106) corrects the paper edge position with the correction values, thereby generating a window signal which controls the side margins of the paper sheet.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: September 19, 2000
    Assignee: Copyer Co., Ltd.
    Inventor: Yuji Matsuda
  • Patent number: 6084607
    Abstract: An ink-type image forming device which accurately identifies a print pattern (test pattern) even in the case where a recording medium is somewhat raised or the recording medium is low in reflectance in an attempt to find a deviation in relative position of recording heads. When the output of a light receiving element (22) is subtracted from the output of a light receiving element (21), both the outputs are offset by each other since variations in output are small at an area where the recording medium is raised. In the meantime, the light receiving elements are spaced in the direction (X) of movement of a carriage, and the output of the light receiving element corresponding to respective regions which constitute the print pattern steeply changes. As a result, a peak signal corresponding to the respective regions of the print pattern is obtained as a difference signal of outputs of the light receiving elements (FIG. 8(D)).
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: July 4, 2000
    Assignee: Copyer Co., Ltd.
    Inventor: Yuji Matsuda