Patents by Inventor Akira Sawada

Akira Sawada 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: 20050074222
    Abstract: An electronic apparatus has a plug-in unit and a housing that can increase a number of optical modules connected thereto. In the plug-in unit, a first connector is connectable to an optical module connected to an optical cable. A connector housing accommodates the first connector and has an insertion part into which the optical module is inserted. An attachment lever is used for fixing the plug-in unit to the housing in which the plug-in unit is accommodated. The first connector is located on a back side of the plug-in unit opposite to a front side where the attachment lever is located.
    Type: Application
    Filed: February 27, 2004
    Publication date: April 7, 2005
    Inventors: Mitsuaki Hayashi, Akira Sawada, Kouichi Kuramitsu, Wataru Takano, Minoru Fujii, Hironori Tanaka
  • Patent number: 6751577
    Abstract: In a method of degradation diagnosis according to the present invention, an equipment degradation diagnosis request is input through network 4 from a diagnosis requester and a degradation diagnosis requests handler is selected in accordance with execution condition information of degradation diagnosis specified in respect of at least one degradation diagnosis requests handler and condition information in accordance with which an diagnosis requester requests degradation diagnosis. A request for execution of degradation diagnosis is made to this selected degradation diagnosis requests handler and the results of execution of the degradation diagnosis obtained by the selected degradation diagnosis requests handler are acquired and output through network 4 to the diagnosis requester. In this way, a service can be implemented whereby diagnosis of degradation requested by a diagnosis requester from a diagnostic service provider is performed rapidly and easily at low cost.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: June 15, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiichi Sasaki, Akira Sawada, Yoko Todo, Katsumi Kanehira, Kazushige Kimura, Kenji Adachi, Masaaki Ookubo, Tadayoshi Murayama, Hiromi Imai
  • Patent number: 6644866
    Abstract: An electronic apparatus includes an optical connector adapting unit to which optical connectors of external optical fibers are connected. The optical connector adapting unit includes a plurality of optical connector adapters which are diagonally arranged on the front side of the apparatus. The optical connectors of the external optical fibers are diagonally detachable from the optical connector adapters. In this electronic apparatus, a large number of optical connectors of optical fibers can be connected and arranged in a restricted space.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: November 11, 2003
    Assignee: Fujitsu Limited
    Inventors: Kiyonori Kusuda, Kenji Tsutsumi, Hiroshi Kadoya, Kenji Toshimitsu, Kazuo Fujita, Hiroshi Katou, Mitsuaki Hayashi, Koichi Nakamura, Hironori Tanaka, Akira Sawada, Kazuya Nishida, Hideki Zenitani
  • Patent number: 6542836
    Abstract: The waveform signal analyzer of the present invention is equipped with: input means 10 that inputs a waveform signals; period detection means 20 that detects the period of the waveform signals inputted by input means 10; and division means 30 that divides the waveform signals by the period detected by period detection means 20. Wavelet transformation means 40 performs wavelet transformation of each individual division of the waveform signals. Display means 50 consecutively displays in time series the wavelet transformation results of each individual division of the waveform signals.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: April 1, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiichi Sasaki, Akira Sawada
  • Patent number: 6539447
    Abstract: An information processing device includes an OS having an interrupt processing function and an OS support system which is activated through initialization of the OS. The OS support system includes an interrupt managing section for recording the contents of an interrupt process requiring a high realtime performance, and an interrupt judging section for receiving an interrupt request earlier than the OS does when the interrupt request occurs in the information processing device, and judging whether the interrupt request corresponds to the interrupt process recorded in the interrupt managing section. The OS support system further includes an interrupt executing section for executing the recorded interrupt process when the interrupt request corresponds to the recorded interrupt process. The OS support system causes the OS to execute an interrupt process which is not recorded in the interrupt managing section.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: March 25, 2003
    Assignee: Elmic Systems, Inc.
    Inventor: Akira Sawada
  • Publication number: 20020176234
    Abstract: A communication device which is constructed so as to permit efficient mounting of cards such as printed boards, thereby enhancing convenience and economy and ensuring high-quality communications. A basic unit is constituted by a basic board having a common control section packaged thereon, and a basic back wiring board on which are arranged a basic card connector for mounting a detachable card unit for processing signals and a basic link connector for additionally connecting such a card unit and which has wiring formed on a substrate thereof. An extension unit is connected to the basic link connector to permit additional connection of the card unit.
    Type: Application
    Filed: September 14, 2001
    Publication date: November 28, 2002
    Inventors: Akira Sawada, Mitsuaki Hayashi, Hironori Tanaka, Kouichi Kuramitsu, Miyuki Hashimoto, Wataru Takano, Mitsuo Fujimura
  • Publication number: 20020120426
    Abstract: In a method of degradation diagnosis according to the present invention, an equipment degradation diagnosis request is input through network 4 from a diagnosis requester and a degradation diagnosis requests handler is selected in accordance with execution condition information of degradation diagnosis specified in respect of at least one degradation diagnosis requests handler and condition information in accordance with which an diagnosis requester requests degradation diagnosis. A request for execution of degradation diagnosis is made to this selected degradation diagnosis requests handler and the results of execution of the degradation diagnosis obtained by the selected degradation diagnosis requests handler are acquired and output through network 4 to the diagnosis requester. In this way, a service can be implemented whereby diagnosis of degradation requested by a diagnosis requester from a diagnostic service provider is performed rapidly and easily at low cost.
    Type: Application
    Filed: December 31, 2001
    Publication date: August 29, 2002
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiichi Sasaki, Akira Sawada, Yoko Todo, Katsumi Kanehira, Kazushige Kimura, Kenji Adachi, Masaaki Ookubo, Tadayoshi Murayama, Hiromi Imai
  • Patent number: 6427055
    Abstract: An image forming apparatus includes a voltage control circuit and a decision circuit. The voltage control circuit varies a voltage to be applied to a charge roller at preselected intervals in correspondence to the non-image area of a photoconductive element. A photosensor senses the reflection density of a particular control pattern formed on the drum 1 before and after the above voltage is varied. The voltage control circuit controls the voltage to be applied to the charge roller in accordance with a ratio between the resulting outputs of the photosensor. The decision circuit determines, at the start-up of the apparatus, whether or not to cause the voltage control circuit 31 to execute the voltage control in accordance with ambient temperature sensed by a temperature sensor. If the ambient temperature is higher than a reference temperature, the voltage control circuit is inhibited from executing the control.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: July 30, 2002
    Assignee: Ricoh Company, Ltd.
    Inventor: Akira Sawada
  • Publication number: 20020072878
    Abstract: A deterioration diagnosis method, wherein the amount of weight loss of a metallic material due to corrosion in atmospheric air for the exposure days is formulated as a function for environmental assessment points which represents a level of a harmfulness of the atmospheric conditions; and the life span of the metallic material is diagnosed based on the corrosion loss calculated from the function.
    Type: Application
    Filed: March 7, 2001
    Publication date: June 13, 2002
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Katsumi Kanehira, Yoko Todo, Keiichi Sasaki, Akira Sawada, Kenji Adachi, Kazushige Kimura
  • Patent number: 6389255
    Abstract: A charging device and method of operating the device for charging a photoreceptor of an image forming apparatus so that a latent image is formed thereupon to be developed by toner, the device including a charging roller that is configured to constantly contact the photoreceptor with a pressure so as to be rotated by rotations of the photoreceptor and that is configured to charge the photoreceptor, and a charging roller cleaning member that is configured to constantly contact a surface of the charging roller with a pressure so as to remove the toner transferred onto the charging roller from the photoreceptor. A length portion of the charging roller cleaning member along an axial direction of the charging roller is set to be equal to or greater than a width portion of an effective development area in an axial direction of the photoreceptor and smaller than a charging contact width portion of the charging roller with the photoreceptor in the axial direction of the charging roller.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: May 14, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Sawada, Daisuke Saito, Masaharu Furuya
  • Publication number: 20010051054
    Abstract: An image forming apparatus includes a voltage control circuit and a decision circuit. The voltage control circuit varies a voltage to be applied to a charge roller at preselected intervals in correspondence to the non-image area of a photoconductive element. A photosensor senses the reflection density of a particular control pattern formed on the drum 1 before and after the above voltage is varied. The voltage control circuit controls the voltage to be applied to the charge roller in accordance with a ratio between the resulting outputs of the photosensor. The decision circuit determines, at the start-up of the apparatus, whether or not to cause the voltage control circuit 31 to execute the voltage control in accordance with ambient temperature sensed by a temperature sensor. If the ambient temperature is higher than a reference temperature, the voltage control circuit is inhibited from executing the control.
    Type: Application
    Filed: April 30, 2001
    Publication date: December 13, 2001
    Applicant: Ricoh Company, Ltd.
    Inventor: Akira Sawada
  • Patent number: 6263175
    Abstract: An image forming apparatus including a rotatable member configured to bear an image, a charging member configured to charge a surface of the rotatable member, and a cleaning member in sliding contact with a surface of the charging member. The surface of the cleaning member includes convex portions which engage with convex portions on a surface of the charging member so as to clean the surface of the charging member. Further, the surface of the charging member includes a surface roughness having a directivity set to a forward direction relative to a rotating direction of the rotatable member and set to a backward direction relative to the surface of the cleaning member.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: July 17, 2001
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Sawada, Masumi Sato
  • Patent number: 6199103
    Abstract: The invention is directed to a system that can easily generate determination conditions and determine a plurality of similar junk electronic mail pieces based on one determination condition.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: March 6, 2001
    Assignee: Omron Corporation
    Inventors: Manabu Sakaguchi, Akira Sawada, Fujiki Fujii, Masaki Hori
  • Patent number: 6186009
    Abstract: The object of the present invention is to provide a pressure sensor comprising a pressure sensing element of a plurality of resistors on a semiconductor board, wherein said pressure sensing element is fixed inside the housing firmly and airtightly.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: February 13, 2001
    Assignee: Fujikoki Corporation
    Inventors: Junichi Miyano, Akira Sawada, Keiji Sasaki
  • Patent number: 6176137
    Abstract: A pressure sensor 1 comprises a metallic housing 10 having a space 18 communicated to a pressure detection space and a thin rising portion 17 formed on the upper end of the peripheral area, a sensor element 20, a sensor element holder 30, a metallic pressure case 60 having a ceiling portion 61, and a connector case 70 formed of an insulating material, wherein a collar portion 211 of a base plate 21 of the sensor element 20 including a pressure sensing element 22 is contacted to an annular protrusion 33 positioned around the opening 32 of the sensor element holder 30, and the collar portion 211 is airtightly welded to the annular protrusion 33 by projection welding. Further, the collar portion 63 on the pressure case 60 and the peak surface 35 of the holder 30 is airtightly welded by an electron beam welding. The airtight interior space defined by the sensor element 20, the sensor element holder 30 and the pressure case 60 is utilized as the reference pressure space.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: January 23, 2001
    Assignee: Fujikoki Corporation
    Inventors: Keiji Sasaki, Jun-ichi Miyano, Akira Sawada
  • Patent number: 6175665
    Abstract: An image inquiry apparatus includes a plurality of unit inquiry circuits arranged in a matrix of m rows and r stages (each of m and r is an integer more than 1). The plurality of unit inquiry circuits other than the unit inquiry circuits of i-th row and (i+1)-th stage (1≦i≦ a smaller one of m and r, and i is an integer) are connected in series in units of rows. Inputs of the unit inquiry circuits of i-th rows and (i+1)-th stages are respectively connected to inputs of the unit inquiry circuits of i-th rows and i-th stages. Each of the plurality of unit inquiry circuits includes a plurality of pixel processing circuits connected in series, and outputs a calculation data corresponding to a difference between a reference pixel and a retrieval pixel which are both held therein. R summing circuits are respectively provided for the r stages of the matrix.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: January 16, 2001
    Assignee: NEC Corporation
    Inventor: Akira Sawada
  • Patent number: 6131467
    Abstract: The present pressure sensor is formed to enable an easy assembly of the sensor body, the sensor element, the substrate, the lead, the shield plate, the terminal holder, the terminal, the water-proof o-ring, the connector case, and further enabling an easy change in design of the connector case. In a pressure sensor comprising a housing 1 and a connector case 9, and having in the interior thereof a sensor element 2, a substrate 3, a lead 4, a shield plate 5, a terminal holder 71, a terminal 72, water-proof o-rings 8a and 8b, a joint 6 is equipped having a staking portion against the housing 1 and the connector case 9 on its upper portion and its lower portion. This could be formed as a joint having a shield portion formed as one unit.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: October 17, 2000
    Assignee: Fujikoki Corporation
    Inventors: Junichi Miyano, Akira Sawada, Keiji Sasaki
  • Patent number: 6069575
    Abstract: To provide a VLC decoder having a decoding speed sufficiently high to be applicable for decoding MPEG 2 data, and having an appropriate circuit size to be integrated on an IC chip, a VLC decoder comprises: a first decode table (102) implemented with logic circuits for decoding a "zero-run code" at one clock; a second decode table (104) implemented on a memory device for decoding other VLC making use of a tree searching technique; a switching means (103, 105, 108) for switching from the first decode table (102) to the second decode table (104) when EOB code is decoded and switching from the second decode table (104) to the first decode table (102) when the "zero-run code" begins.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: May 30, 2000
    Assignee: NEC Corporation
    Inventors: Shigenori Kinouchi, Akira Sawada
  • Patent number: 5879849
    Abstract: A developing device using one component developer for developing an electrostatic latent image on a photoconductive drum. The one component developer includes particles of parents of toner, resin beads and silica. The silica adhere to a surface of each resin bead. The resin beads and the silica further adhere to a surface of the parents of toner. A volume average diameter of the resin beads is more than that of the silica and is less than that of the parents of toner.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: March 9, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Sawada, Kanjiroh Kawasaki, Shinichiro Yagi
  • Patent number: 5754234
    Abstract: An adder restores an image data by adding an output of a reverse DCT portion and an output of a predicted value calculating portion to output to a macro-block buffer. Data temporarily stored in the macro-block buffer is written in a predicting dynamic memory per a unit of data of one word consisted of 2.times.2 blocks of luminance component (Y), 1.times.2 blocks of Cr component and 1.times.2 blocks of Cb components, via a memory data bus. A prediction reference block of the preceding frame stored in the predicting dynamic memory is output to a reference block buffer via the memory data bus. A restored image data of the preceding frame in the predicting dynamic memory is output to a line buffer via the memory data bus.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: May 19, 1998
    Assignee: NEC Corporation
    Inventors: Toshiaki Kitsuki, Akira Sawada