Patents by Inventor Ryuichi Negishi
Ryuichi Negishi 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).
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Publication number: 20110027112Abstract: The present invention provides a water pump capable of minimizing the runout of a shaft of an impeller even if a bearing supporting the shaft is provided only at one location. This water pump includes a pump cover, a motor case having a partition wall part, an impeller that is rotatably housed in a pump chamber, a shaft, a radial bearing, a rotor base formed with a shaft connecting part to which the shaft is press-fitted and fixed, an inner magnet that is fixed to an outer periphery of the rotor base, and a stator core mounted in the motor case. A substantially cylindrical bearing housing part is formed in partition wall part, the radial bearing is inserted and fixed to the bearing housing part, the radial bearing is disposed in the rotor base, and an axial direction overall length of the radial bearing is positioned within a substantial area of an axial direction overall length of the inner magnet.Type: ApplicationFiled: July 21, 2010Publication date: February 3, 2011Applicant: Yamada Manufacturing Co., Ltd.Inventors: Ryuichi Negishi, Shigetoshi Miyata
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Publication number: 20040022404Abstract: The present invention provides a sound processing apparatus capable of outputting clearly perceivable sound. The sound processing apparatus comprises high frequency range enhancement unit for a sound signal amplified by an amplifier, gain-varying unit for varying the gain of a sound signal whose high frequency component is enhanced on the basis of a control signal presented from amplitude sensing unit, addition unit for adding a sound signal that is output from the gain-varying unit and a sound signal from the amplifier, frequency characteristic adding unit whereby the amplitude of the sound signal that is input from the amplifier is increased with increasing frequency in the specified frequency range, and amplitude sensing unit for sensing the magnitude of the amplitude of the sound signal from frequency characteristic adding unit and generating a voltage signal as a control signal substantially proportional to the amplitude thereof.Type: ApplicationFiled: July 30, 2002Publication date: February 5, 2004Inventor: Ryuichi Negishi
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Patent number: 6374315Abstract: The present invention relates to a data processing device which is also used as an interface device for connecting an external storage device to a host computer to which a card form of storage device can be connected, the external storage device differing in data format from the card form of storage device. The data processing device includes a connection unit for connecting the external storage device to the host computer, the connection unit being able to be removably fitted into a slot which is provided in the host computer and into which to removably fit the card form of storage device, and a converting circuit for converting data, which is to be outputted from the host computer in a data format conforming to the card form of storage device, into a data format conforming to the external storage device, as well as for converting data read out from the external storage device into the data format conforming to the card form of storage device.Type: GrantFiled: September 10, 1999Date of Patent: April 16, 2002Assignee: Canon Kabushiki KaishaInventors: Toru Okada, Hitoshi Kurihara, Ryuichi Negishi, Kiyoyuki Kakinuma
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Patent number: 6058089Abstract: An external peripheral device connects through a flexible cable to an electrical connector which connects to a computer system. The flexible cable wraps around a cable wrap member that protrudes out of the peripheral device's housing, and the electrical connector snaps into a connector holder built into the peripheral device's housing. The cable wrap member and the connector holder permit the secure storage of the flexible cable and electrical connector during non-use or transportation of the device.Type: GrantFiled: January 10, 1995Date of Patent: May 2, 2000Assignee: Compaq Computer CorporationInventors: John E. Youens, Ryuichi Negishi, Toru Okada, Hitoshi Kurihara
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Patent number: 5991530Abstract: The present invention relates to a data processing device which is also used as an interface device for connecting an external storage device to a host computer to which a card form of storage device can be connected, the external storage device differing in data format from the card form of storage device. The data processing device includes a connection unit for connecting the external storage device to the host computer, the connection unit being able to be removably fitted into a slot which is provided in the host computer and into which to removably fit the card form of storage device, and a converting circuit for converting data, which is to be outputted from the host computer in a data format conforming to the card form of storage device, into a data format conforming to the external storage device, as well as for converting data read out from the external storage device into the data format conforming to the card form of storage device.Type: GrantFiled: October 22, 1997Date of Patent: November 23, 1999Assignee: Canon Denshi Kabushiki KaishaInventors: Toru Okada, Hitoshi Kurihara, Ryuichi Negishi, Kiyoyuki Kakinuma
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Patent number: 5786958Abstract: A servo pattern for controlling a head position has a first pattern in which two frequency signals having respectively different frequencies are arranged alternately in the width direction of a track in a two-track cycle, and a second pattern which is repeated in a cycle of n tracks. The first and the second patterns are arranged in the longitudinal direction of the tracks so as to create a servo pattern with a wide servo capture range and so as also to ensure accurate detection.Type: GrantFiled: January 15, 1997Date of Patent: July 28, 1998Assignee: Canon Denshi Kabushiki KaishaInventors: Ryuichi Negishi, Toru Okada, Tsuyoshi Sakuma
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Patent number: 5671067Abstract: A communication system is composed of an OCR-FAX apparatus for reading contents of an order written in an optical character recognition (OCR) document sheet and performing an optical character recognition for the contents and an OCR center apparatus for receiving pieces of character recognized data obtained in the OCR-FAX apparatus and transmitting pieces of format information of the OCR document sheet to the OCR-FAX apparatus. A basic program of an OCR recognition program is stored in advance in a ROM region of an IC card. A subordinate program of the OCR recognition program and a piece of OCR document sheet identifying information are temporarily stored in a SRAM region of the IC card and are transferred to an EEPROM region of the IC card. The format information are temporarily stored in the SRAM region and are transferred to a format information storing unit.Type: GrantFiled: June 5, 1995Date of Patent: September 23, 1997Assignee: Matsushita Graphic Communication Systems, Inc.Inventors: Ryuichi Negishi, Kiyonori Sekiguchi, Koichi Nagoshi, Hiroshi Saza, Kiyohiko Honda
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Patent number: 5627661Abstract: An OCR document sheet is printed at an order terminal side, and contents of an order written in the OCR document sheet by an transmitter are read by a scanner of a scanner control element at the order terminal side. The contents of the order are converted into pieces of character recognized data according to the optical character recognition. Also, character patterns such as "commodity name" are generated in a character generating element. The character recognized data and the character patterns are displayed, and the character recognized data are corrected when a transmitter desires the correction of the data displayed. Thereafter, the character recognized data are transmitted to an order-receiving center to inform the center of the contents of the order. Also, the character recognized data and the character patterns are printed out to record the contents of the order at the order terminal side.Type: GrantFiled: March 31, 1995Date of Patent: May 6, 1997Assignee: Matsushita Graphic Communication Systems, Inc.Inventors: Ryuichi Negishi, Kiyonori Sekiguchi, Koichi Nagoshi, Hiroshi Saza, Kiyohiko Honda, Tsuyoshi Nishijima, Kazunori Sato
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Patent number: 5453887Abstract: A servo pattern arrangement for controlling the position of a head has a first pattern, in which two frequency signal having different frequencies are arranged alternately in the width direction of a track in a two-track cycle. The servo pattern arrangement also has a second pattern which is repeated in a cycle of n tracks. The first and the second patterns are arranged in the longitudinal direction of the tracks so as to create a servo pattern arrangement with a wide servo capture range and so as to also ensure accurate detection.Type: GrantFiled: May 11, 1993Date of Patent: September 26, 1995Assignee: Canon Denshi Kabushiki KaishaInventors: Ryuichi Negishi, Toru Okada, Tsuyoshi Sakuma
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Patent number: 5257255Abstract: A head for writing data into and/or reading data out of a recording medium such as a magnetic disc is displaced along a path by a motor such as a voice coil motor. The moving member of the motor is disposed on one side of the path, and another moving member of a speed sensor for detecting the head displacement speed is disposed on the opposite side. As a result, an unbalanced mass arrangement with respect to the path along which the head is displaced will not occur. The signal from the speed sensor can be used, for example, to interrupt a write operation if a mechanical impact occurs. Furthermore, even in an embodiment in which a coil is wound around the moving member of the speed sensor so that the head displacement speed is detected as a voltage induced across the coil as the head is displaced, the motor and the speed sensor are disposed in spaced-apart-relationship with each other and the speed sensor is less susceptible to adverse effects caused by the leakage flux from the motor.Type: GrantFiled: July 31, 1992Date of Patent: October 26, 1993Assignee: Canon Denshi Kabushiki KaishaInventors: Masao Morimoto, Hitoshi Kurihara, Ryuichi Negishi, Toru Okada, Masae Ikeda
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Patent number: 4969056Abstract: In a disc storage unit capable of writing a servo signal for positioning a recording head at each track defined on a disc-shaped recording medium, data in a region between adjacent tracks are erased prior to the writing of the servo signal. The data stored on the recording medium are completely erased and then the servo signal can be written in the recording medium.Type: GrantFiled: July 24, 1987Date of Patent: November 6, 1990Assignee: Canon Denshi Kabushiki KaishaInventors: Ryuichi Negishi, Toru Okada