Patents by Inventor Kazuo Nakamura

Kazuo 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).

  • Publication number: 20070177387
    Abstract: A tail light (lamp) for a motorcycle with improved visibility and outward appearance includes a bulb, a reflector that reflects light from the bulb in a predetermined direction, and a lens that transmits the reflected light. Flux density is varied about a set point, which is distant from the bulb, according to a distance from the set point.
    Type: Application
    Filed: January 30, 2007
    Publication date: August 2, 2007
    Applicants: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Katsumitsu WAKAMATSU, Kazuo NAKAMURA, Toshiaki OZAWA
  • Publication number: 20070115225
    Abstract: Disclosed herein is a display apparatus including a pixel-array unit, a scanner unit and a signal unit. The pixel-array unit has pixels laid out to form a matrix and each provided at an intersection of first and second scanning lines each oriented in a row direction of the matrix and a signal line oriented in a column direction of the matrix. The signal unit provides a video signal to the signal line. The scanner unit sequentially scans the pixels of the matrix in row units by supplying first and second control signals to the first and second scanning lines respectively.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 24, 2007
    Applicant: Sony Corporation
    Inventors: Katsuhide Uchino, Junichi Yamashita, Gaku Izumi, Kazuo Nakamura, Tetsuro Yamamoto
  • Publication number: 20070110242
    Abstract: A communication system capable of employing polarization-dependent phase modulators with a reversing configuration that preserves security against disturbance of a polarization state at a transmission path but without using Faraday mirrors and a communication method using the same are provided. A quantum cryptography system of the present invention includes a first station 1, a transmission path 2, and a second station 3. The first station 1 has means for emitting time-divided optical pulses into the transmission path 2 and measuring a phase difference between the optical pulses returning from the transmission path 2. The transmission path 2 is a medium of light.
    Type: Application
    Filed: November 29, 2004
    Publication date: May 17, 2007
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Akihisa Tomita, Kazuo Nakamura, Akio Tajima, Akihiro Tanaka, Yoshihiro Nanbu, Shuuji Suzuki, Takeshi Takeuchi, Wakako Maeda, Seigo Takahashi
  • Patent number: 7167996
    Abstract: It is an object to increase a speed of a CPU operation irrespective of an operation speed of a peripheral circuit and to prevent an increase in power consumption from being thereby caused. A clock generating circuit (10) generates two clocks having phases which are equal to each other, that is, a CPU clock (CLKCPU) and a bus clock (CLKBUS). A BIU (bus interface unit) (51) controls a code bus based on the CPU clock (CLKCPU) and controls a peripheral bus based on the bus clock (CLKBUS). The clock generating circuit (10) switches a frequency of each of the CPU clock (CLKCPU) and the bus clock (CLKBUS) depending on an operation mode of an MCU. For example, a speed of the CPU clock (CLKCPU) is set to be higher than that of the bus clock (CLKBUS) in order to carry out a high-speed operation of a CPU. Also in that case, the phases of both clocks are equal to each other. Consequently, the code bus and the peripheral bus in the BIU (51) can easily be controlled.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: January 23, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Hiroki Takahashi, Kazuo Nakamura
  • Patent number: 7136058
    Abstract: A signal line drive circuit according to the present invention has: a latch circuit which latches digital pixel data; a D/A converter which converts a latch output from the latch circuit into an analog video signal; an AMP which amplifies the analog video signal converted by the D/A converter; and a signal selection circuit which selects a signal line to which the analog video signal amplified by the AMP is supplied. The AMP has: an odd number of inverters which are cascade-connected; capacitor elements which are respectively connected between stages of the inverters and between an input terminal of the inverter on a first stage and an output terminal of the inverter on a last stage; a first power supply line which supplies a power supply voltage to the inverter on the first stage; and a second power supply line which supplies a power supply voltage to inverters other than the inverter on the first stage.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: November 14, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Nakamura, Hirotaka Hayashi, Hisao Fujiwara, Masao Karube, Kazuo Nakamura, Masakatsu Kitani
  • Publication number: 20060170636
    Abstract: In a pixel circuit formed by using a MOS process, a constant current is applied from a second transistor (T2) as a constant current source to an organic EL device coupled to a third transistor (T3) so that the organic EL device emits light, during the period when the third transistor (T3) is in the conductive state. The third transistor (T3) is switched on and off based on its gate voltage dependent upon a signal value written to a capacitor (Cs) and a ramp signal voltage (Vcs). Thus, the organic EL device emits light during the period dependent upon the signal value. That is, displaying operation is implemented with gray-scale being controlled according to a video signal value.
    Type: Application
    Filed: February 1, 2006
    Publication date: August 3, 2006
    Inventors: Kazuo Nakamura, Katsuhide Uchino
  • Patent number: 7062618
    Abstract: A memory apparatus having a volatile memory for storing data from a host, a nonvolatile memory capable of storing the data stored in the volatile memory, and electrically deleting the data, and a control circuit for controlling data transfer between the volatile memory and the nonvolatile memory. A capacity of a data storage area of the volatile memory is larger than that of a data storage area of the nonvolatile memory.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: June 13, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Motoyasu Tsunoda, Shinya Iguchi, Junichi Maruyama, Kazuo Nakamura
  • Publication number: 20060119563
    Abstract: A signal line drive circuit according to the present invention has: a latch circuit which latches digital pixel data; a D/A converter which converts a latch output from the latch circuit into an analog video signal; an AMP which amplifies the analog video signal converted by the D/A converter; and a signal selection circuit which selects a signal line to which the analog video signal amplified by the AMP is supplied. The AMP has: an odd number of inverters which are cascade-connected; capacitor elements which are respectively connected between stages of the inverters and between an input terminal of the inverter on a first stage and an output terminal of the inverter on a last stage; a first power supply line which supplies a power supply voltage to the inverter on the first stage; and a second power supply line which supplies a power supply voltage to inverters other than the inverter on the first stage.
    Type: Application
    Filed: January 26, 2006
    Publication date: June 8, 2006
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Nakamura, Hirotaka Hayashi, Hisao Fujiwara, Masao Karube, Kazuo Nakamura, Masakatsu Kitani
  • Patent number: 7054699
    Abstract: A process management system has a plurality of processes, each process producing a group of products from at least one kind of parts by applying a predetermined operation thereto. A plurality of processes are hierarchically connected so that a final product is obtained from a plurality of parts. Part data and production data is generated. The part data is data related to connection information, and the part data includes at least usage time data. The product data is data related to the connection information and including production time data. A ratio calculating system is provided to calculate a ratio of the products obtained with use of the parts to the group of products in accordance with the production time data and the usage time data.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: May 30, 2006
    Assignee: PENTAX Corporation
    Inventor: Kazuo Nakamura
  • Patent number: 7009219
    Abstract: A small, simple current-injection diamond ultraviolet light-emitting device comprising a high-quality diamond grown by chemical vapor deposition (CVD) method (1), a surface conductive layer (2) provided on the surface of the diamond, and electrodes (4, 5) provided on the surface conductive layer. The device is a free-exciton recombination emission diamond ultraviolet light-emitting device comprising a CVD diamond crystal where the free-exciton recombination radiation (235 nm) caused by current injection is dominant.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: March 7, 2006
    Assignee: Tokyo Gas Co., Ltd.
    Inventors: Takefumi Ishikura, Kenji Horiuchi, Satoshi Yamashita, Aki Kawamura, Kazuo Nakamura, Kenichi Nakamura, Takahiro Ide
  • Patent number: 6988723
    Abstract: A sheet member feeding and conveying apparatus has a tray having a tray main body capable of displacement in directions close to and away from a pickup section for taking out a document in the take-out position. There is a tray driving section for driving the tray main body to be displaced in the directions close to and away from the pickup section. A control section is provided for controlling the tray driving section so as to, in a feeding state, drive the tray main body to be displaced so that a document closest to the pickup section held on the tray is placed in the take-out position, and in a waiting state, drive the tray main body to be displaced in a waiting position closer to the pickup section than a position where the maximum holding amount of documents are held on the tray.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: January 24, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenji Kitami, Kazuo Nakamura, Souichi Takata, Hiroyuki Nagao
  • Patent number: 6972779
    Abstract: A liquid crystal display device comprises a plurality of display pixels PX each including sub-pixels weighted in a preset area ratio and a driving circuit which drives the display pixels. Particularly, the driving circuit is configured to determine the gradation of each display pixel PX by selectively combining the sub-pixels with driving periods weighted in a preset time ratio.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 6, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomonobu Motai, Yoshiro Aoki, Kazuo Nakamura
  • Publication number: 20050237849
    Abstract: Current consumption in a start signal outputting circuit, and that in a clock signal conductor thereto, or the EMI is to be suppressed. An output C1 from the 126th stage flipflop 31-126 of a shift register 30, having 128 stages of flipflops 31, is supplied to a start signal outputting circuit 40. An output of the start signal outputting circuit 40 is delivered as a start signal OSTH, while being delivered to a start signal output detection circuit 40. A detection signal STD from a start signal output detection circuit 50 and an output C124 of the 124th stage flipflop 31-124 of the shift register 30 are supplied to a clock stop circuit 60. Clock signals CLKA cease to be supplied by the clock stop circuit 60 during a time period as from inputting of the detection signal STD until inputting of C124.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 27, 2005
    Inventor: Kazuo Nakamura
  • Publication number: 20050234604
    Abstract: An onboard-equipment control apparatus controls activation of an onboard apparatus such as an air conditioner and termination of the operation of the onboard apparatus in order to prevent an onboard battery from running out of residual electric charge in advance. Upon detection of a state in which an onboard radio apparatus is not capable of receiving a termination command from a cellular phone or the cellular phone is not capable of transmitting a termination command to the onboard radio apparatus while the air conditioner is in operation, the onboard-equipment control apparatus forcibly terminates the operation of the air conditioner even before a termination condition is satisfied. Thus, the onboard battery can be prevented in advance from running out of accumulated electric charge required for operating the activated air conditioner thereafter.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 20, 2005
    Inventors: Kazuo Nakamura, Nobutaka Tauchi
  • Publication number: 20050203653
    Abstract: A process management system has a plurality of processes, each process producing a group of products from at least one kind of parts by applying a predetermined operation thereto. A plurality of processes are hierarchically connected so that a final product is obtained from a plurality of parts. Part data and production data is generated. The part data is data related to connection information, and the part data includes at least usage time data. The product data is data related to the connection information and including production time data. A ratio calculating system is provided to calculate a ratio of the products obtained with use of the parts to the group of products in accordance with the production time data and the usage time data.
    Type: Application
    Filed: March 8, 2005
    Publication date: September 15, 2005
    Applicant: PENTAX Corporation
    Inventor: Kazuo Nakamura
  • Publication number: 20050201787
    Abstract: An image reading device includes a document stacking tray on which documents are stacked, a feed roller for picking up, one sheet at a time, the documents that are stacked on the document stacking tray, a curved transporting path through which the document is transported, and a CCD reading unit and a CIS reading unit for reading images from the document. The document stacking tray includes a electric tray for raising or lowering the document within a range of a height of the curved transporting path, so as to feed the document to the feed roller. With such an arrangement, it is possible to provide an image reading device and an image forming apparatus that are capable of separating and transporting a large number of documents and efficiently reading images from the documents even when the documents are thick.
    Type: Application
    Filed: April 29, 2005
    Publication date: September 15, 2005
    Inventor: Kazuo Nakamura
  • Publication number: 20050119776
    Abstract: A process control system for controlling a production process includes a data generating system that generates at least first data regarding first products produced in a previous process and second data regarding parts used in a next process. The first data and the second data are related to link information indicating a link between the previous process and the second process. The process control system further includes a data storing system that stores data generated by the data generating system.
    Type: Application
    Filed: September 29, 2004
    Publication date: June 2, 2005
    Applicant: PENTAX Corporation
    Inventor: Kazuo Nakamura
  • Patent number: 6901237
    Abstract: An image reading device includes a document stacking tray on which documents are stacked, a feed roller for picking up, one sheet at a time, the documents that are stacked on the document stacking tray, a curved transporting path through which the document is transported, and a CCD reading unit and a CIS reading unit for reading images from the document. The document stacking tray includes a electric tray for raising or lowering the document within a range of a height of the curved transporting path, so as to feed the document to the feed roller. With such an arrangement, it is possible to provide an image reading device and an image forming apparatus that are capable of separating and transporting a large number of documents and efficiently reading images from the documents even when the documents are thick.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: May 31, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kazuo Nakamura
  • Patent number: 6892943
    Abstract: The system includes a storage including records created for every product at every stage and a processor operated by first and second processes. Each record includes a first stage information at which the food product is processed, a first time information for specifying the time period of processing at the first stage, a second stage information at which the livestock product processed at the first stage is received as material and a second time information for specifying the time period of processing at the second stage. The first process specifies a target record whose first stage and time information are coincident with that of an original product. The second process specifies a new target record whose first stage and time information are coincident with the second stage and time information of the previous target record. The second process is repeated until a new target record cannot be specified.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: May 17, 2005
    Assignee: PENTAX Corporation
    Inventor: Kazuo Nakamura
  • Publication number: 20050099372
    Abstract: An organic electroluminescent display device includes scanning lines, signal lines, and pixels formed in a matrix, each pixel being at an intersection of each of the scanning lines and each of the signal lines. Each pixel includes a light-emitting element, a light-emitting circuit composed of a thin-film transistor, and a light-receiving circuit composed of a thin-film transistor. When the light-emitting circuit is selected by the scanning line, the light-emitting circuit drives the light-emitting element according to a video signal that is input from the signal line, thereby displaying an image on the pixels formed in the matrix. The light-receiving circuit is selected in a period of time during which the light-emitting circuit does not operate, and outputs a light-receiving signal in accordance with the amount of light incident on the pixel to a different signal line.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 12, 2005
    Applicant: Sony Corporation
    Inventors: Kazuo Nakamura, Katsuhide Uchino, Nobutoshi Asai