Patents by Inventor Seiichi Yamamoto

Seiichi Yamamoto 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: 20090048483
    Abstract: A colonoscope as an endoscope has an insertion tube for insertion in a patient's gastrointestinal tract. A head portion is disposed at an end of the insertion tube, for inspecting a large intestine. In combination with this, a device for insertion guide includes a base tube mounted on the head portion. Two propulsion fins are disposed on the base tube to extend in an axial direction of the head portion. A driving mechanism with balloons shifts the propulsion fins between closed and open positions. The propulsion fins, when in the closed position, are disposed to extend along the head portion, and when in the open position, are deployed in a radial direction by setting a distal fin end thereof away from the head portion, to propel the head portion inserted in the large intestine. Furthermore, the balloons set the propulsion fins in the open position alternately with one another.
    Type: Application
    Filed: August 15, 2008
    Publication date: February 19, 2009
    Applicant: FUJIFILM Corporation
    Inventor: Seiichi Yamamoto
  • Patent number: 7393625
    Abstract: The present invention provides a photothermographic material having, on one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for the organic silver salt, and a binder, and at least one non-photosensitive layer and, on the other side of the support, a non-photosensitive back layer, wherein a total amount of ammonia contained in the two sides is from 5×10?4 mol/m2 to 2×10?2 mol/m2, and a molar ratio (A2/A1) of an ammonia content of the non-photosensitive back layer (A2) to an ammonia content of the layer on the image forming layer side (A1) is from 0.3 to 5.0; or a photothermographic material according to the above, wherein the non-photosensitive back layer includes an ammonium salt, and an ammonia content of the non-photosensitive back layer is from 2 mg/m2 to 100 mg/m2.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: July 1, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Minoru Sakai, Seiichi Yamamoto, Takayoshi Oyamada
  • Patent number: 7393626
    Abstract: The invention provides a photothermographic material including, on a same surface of a substrate, photosensitive silver halide grains, a non-photosensitive organic silver salt, a reducing agent and a binder, in which the photosensitive silver halide grains include iridium and a metal of groups 3 to 10 of the periodic table other than iridium, and 90% or more of the total iridium amount within the grain are contained in a core of 50% or less of the grain.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: July 1, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Seiichi Yamamoto
  • Publication number: 20080100242
    Abstract: A motor drive circuit (3) includes a plurality of pairs of a power-supply-side drive transistor (15, 16) and a ground-side drive transistor (17, 18) that drive a coil (9) from a midpoint thereof, a drive current detecting unit (19) that detects a drive current of coil (9) on the power supply side, and a control circuit (20) that controls such that in the case where the motor rotating in a positive direction is braked, in order to apply a torque in a negative direction, selects the power-supply-side drive transistor and the other ground-side drive transistor and turns on to flow the drive current, and when the drive current becomes a predetermined value, turns off these selected power-supply-side drive transistor and selected ground-side drive transistor to flow a regenerative current. Accordingly, the motor drive circuit that can control the torque in the case where the torque in the negative direction is applied to the motor rotating in the positive direction to brake can be provided.
    Type: Application
    Filed: October 3, 2005
    Publication date: May 1, 2008
    Inventor: Seiichi Yamamoto
  • Publication number: 20080084241
    Abstract: A load driving device according to the present invention includes: a first current generation section generating a first current in accordance with a driving current of a load; a second current generation section generating a predetermined second current; an integration section charging and discharging a capacitor in accordance with magnitude relation between the first current and the second current; a comparison section comparing a terminal voltage of the capacitor and a predetermined threshold voltage; and an output section generating a protection signal based on output logic of the comparison section. Such configuration permits appropriately preventing load burnout.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 10, 2008
    Applicant: ROHM CO., LTD.
    Inventors: Seiichi Yamamoto, Takahiro Ota
  • Publication number: 20080067964
    Abstract: A technology for correctly detecting a rotating position of a rotator at the time of rotation start. A rotation control apparatus controls rotation of a motor, which includes a stator provided with a plurality of coils and a rotor having magnetism. At the time of detecting a position of the motor when the motor is stopped, a control part supplies a current to a plurality of different paths including the coils, a stopped position detecting part measures the current flowing in each of the plurality of paths, judges the order of the measured current values, and a rotating position of the motor is detected based on the order. Based on a combination of a path showing the highest current value and a path showing the second highest current value, the stopped time position detecting part judges a position of the motor.
    Type: Application
    Filed: May 24, 2005
    Publication date: March 20, 2008
    Inventors: Norihiro Maeda, Seiichi Yamamoto
  • Patent number: 7332267
    Abstract: Disclosed is a photothermographic material comprising an image forming layer containing at least a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent and a binder and a non-image forming layer on at least one surface of a support, wherein 50% by weight or more of the binder is a hydrophilic binder, the light-sensitive material further comprising a metal phthalocyanine compound represented by the following formula (PC-1): wherein M represents a metal atom, R1, R4, R5, R8, R9, R12, R13 and R16 respectively represent a hydrogen atom or a substituent where at least one of R1, R4, R5, R8, R9, R12, R13 and R16 is an electron attractive group and R2, R3, R6, R7, R10, R11, R14 and R15 respectively represent a hydrogen atom or a substituent.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: February 19, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Hajime Nakagawa, Seiichi Yamamoto, Masahiko Taniguchi
  • Publication number: 20080019225
    Abstract: A driver IC 1 has a bias terminal 20a via which a bias voltage fed from a microcomputer 2 to drive and control a loading motor 4 is fed in and a bias terminal 20b via which a bias voltage fed from a DSP 3 to drive and control a focus coil 5, a tracking coil 6, a sled motor 7, and a spindle motor 8 is fed in.
    Type: Application
    Filed: September 19, 2007
    Publication date: January 24, 2008
    Inventors: Seiichi Yamamoto, Kenichi Niiyama, Nobuo Nakamachi, Yoshiki Tanaka, Shinsuke Takagimoto
  • Patent number: 7314706
    Abstract: A photothermographic material containing an image forming layer having at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for the organic silver salt on one side of a support, and a first non-photosensitive layer containing a dye fixing agent for a water-soluble dye, a second non-photosensitive layer disposed between the support and the first non-photosensitive layer, and a third non-photosensitive layer forming an outermost layer on the other side of the support, wherein at least one layer among the first, second and third non-photosensitive layers contains the water-soluble dye. The invention provides a photothermographic material which exhibits high image quality and excellent image storability, and a manufacturing method thereof.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: January 1, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Seiichi Yamamoto
  • Patent number: 7312967
    Abstract: By voltage limiting means, which provided in an IC as one of the components of an electronic apparatus, and a resistor, which is provided between a voltage input terminal of the IC and an external terminal of the electronic apparatus, an unexpected abnormal voltage generated in a DC power source such as an AC adaptor can be limited, and an overvoltage of not less than a predetermined value can be also prevented from being applied to the IC.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: December 25, 2007
    Assignee: Rohm Co., Ltd.
    Inventors: Kenichi Niiyama, Seiichi Yamamoto
  • Publication number: 20070273350
    Abstract: A PWM drive circuit of the present invention is built with a load driving power MOS transistor Q5 (Q6), a resistor R3 (R5) or R4 (R6), and a capacitance of the MOS transistor Q5 (Q6). The PWM drive circuit is provided with: a CR circuit that reduces a through rate of a voltage based on a PWM voltage and then feeds the resultant voltage to the gate of the MOS transistor Q5 (Q6); and a gate voltage control portion 4 (5) that stops an operation of the CR circuit and pulls down (up) the gate potential of the MOS transistor Q5 (Q6) to a predetermined value upon detecting during a transition period of a gate voltage of the MOS transistor Q5 (Q6) that the MOS transistor Q5 (Q6) is completely switched from off to on. This makes it possible to reduce switching noise and switching loss.
    Type: Application
    Filed: March 29, 2005
    Publication date: November 29, 2007
    Inventor: Seiichi Yamamoto
  • Publication number: 20070258174
    Abstract: A multiple-channel load driving apparatus has a plurality of driver circuits supplying drive currents individually to a plurality of loads. Of those driver circuits, at least one limits or stops the output thereof not only if an abnormality occurs in itself but also if an abnormality occurs in any other driver circuit. This configuration allows coordinated abnormality protection among the individual driver circuits, and thereby improves the safety and reliability of the load driving apparatus.
    Type: Application
    Filed: May 3, 2007
    Publication date: November 8, 2007
    Applicant: Rohm Co., Ltd.
    Inventors: Seiichi Yamamoto, Takahiro Ota
  • Patent number: 7289396
    Abstract: A driver IC 1 has a bias terminal 20a via which a bias voltage fed from a microcomputer 2 to drive and control a loading motor 4 is fed in and a bias terminal 20b via which a bias voltage fed from a DSP 3 to drive and control a focus coil 5, a tracking coil 6, a sled motor 7, and a spindle motor 8 is fed in.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: October 30, 2007
    Assignee: Rohm Co., Ltd.
    Inventors: Seiichi Yamamoto, Kenichi Niiyama, Nobuo Nakamachi, Yoshiki Tanaka, Shinsuke Takagimoto
  • Publication number: 20070224555
    Abstract: The present invention provides a photothermographic material having, on one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for the organic silver salt, and a binder, and at least one non-photosensitive layer and, on the other side of the support, a non-photosensitive back layer, wherein a total amount of ammonia contained in the two sides is from 5×10?4 mol/m2 to 2×10?2 mol/m2, and a molar ratio (A2/A1) of an ammonia content of the non-photosensitive back layer (A2) to an ammonia content of the layer on the image forming layer side (A1) is from 0.3 to 5.0; or a photothermographic material according to the above, wherein the non-photosensitive back layer includes an ammonium salt, and an ammonia content of the non-photosensitive back layer is from 2 mg/m2 to 100 mg/m2.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 27, 2007
    Inventors: Minoru Sakai, Seiichi Yamamoto, Takayoshi Oyamada
  • Patent number: 7235352
    Abstract: The present invention provides a photothermographic material including a support having disposed on one surface thereof at least one image-forming layer containing a binder, an organic silver salt, a reducing agent for reducing silver ions, an organic polyhalogen compound and a photosensitive silver halide, wherein the photosensitive silver halide has a silver iodide content ranging from 10 mol % to 100 mol %. The silver halide further contains at least one metal selected from a first metal group and one metal selected from a second metal group, with a proviso that none of the at least one metal selected from the first metal group and the at least one metal selected from the second metal group are the same.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: June 26, 2007
    Assignee: Fujifilm Corporation
    Inventors: Yutaka Oka, Seiichi Yamamoto
  • Publication number: 20070140462
    Abstract: According to one embodiment, a telephone exchange apparatus includes a memory which stores a second management table associating a terminal ID specifying a first telephone terminal among the plurality of telephone terminals with a terminal ID specifying a second telephone terminal belonging to the group, when an incoming call addressed to a group is reached from the first telephone terminal and a response to the incoming call is made by the second telephone terminal, and a controller which refers the second management table based on the terminal ID of the first telephone terminal included in an incoming call addressed from the first telephone terminal to a group to which the second telephone terminal belonged thereto, when the incoming call is received, and performs incoming control with top priority to the second telephone terminal based on the reference result.
    Type: Application
    Filed: September 5, 2006
    Publication date: June 21, 2007
    Inventor: Seiichi Yamamoto
  • Patent number: 7223528
    Abstract: The present invention provides a photothermographic material having, on at least one side of a support, at least an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for the organic silver salt, and at least one non-photosensitive layer, wherein the material contains a water-soluble magenta dye, and also provides an image forming method.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: May 29, 2007
    Assignee: Fujifilm Corporation
    Inventors: Seiichi Yamamoto, Masaharu Sugai, Rikio Inoue
  • Publication number: 20070117054
    Abstract: The present invention provides a photothermographic material including a support having disposed on one surface thereof at least one image-forming layer containing a binder, an organic silver salt, a reducing agent for reducing silver ions, an organic polyhalogen compound and a photosensitive silver halide, wherein the photosensitive silver halide has a silver iodide content ranging from 10 mol % to 100 mol %. The silver halide further contains at least one metal selected from a first metal group and one metal selected from a second metal group, with a proviso that none of the at least one metal selected from the first metal group and the at least one metal selected from the second metal group are the same.
    Type: Application
    Filed: January 17, 2007
    Publication date: May 24, 2007
    Inventors: Yutaka Oka, Seiichi Yamamoto
  • Publication number: 20070072136
    Abstract: A photothermographic material containing, on a support, an image forming layer having at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for silver ions, and a non-photosensitive layer, wherein the non-photosensitive layers contains at least an anionic water-soluble dye, a fixing agent for the water-soluble dye, and an acid generator. The invention provides a photothermographic material which exhibits improved surface state, high image quality, and excellent image storability.
    Type: Application
    Filed: September 13, 2006
    Publication date: March 29, 2007
    Inventor: Seiichi Yamamoto
  • Patent number: 7186501
    Abstract: The present invention provides a photothermographic material, having a support and an image-forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducer for the organic silver salt on at least one surface of the support, wherein the image-forming layer contains a hydrophilic polymer which has a vinyl monomer unit containing a quaternary nitrogen atom-containing group or a nitrogen-containing heterocyclic group.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: March 6, 2007
    Assignee: Fujifilm Corporation
    Inventor: Seiichi Yamamoto