Patents by Inventor Akira Yamanaka

Akira Yamanaka 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: 20080212280
    Abstract: The electronic apparatus including the cooling system upon which it is difficult for the temperature of wind flowing in the passage to exert an influence, and yet which enables an efficient cooling accompanied by the generated heat temperature of the electronic part is provided.
    Type: Application
    Filed: February 25, 2008
    Publication date: September 4, 2008
    Applicant: NEC CORPORATION
    Inventor: Akira YAMANAKA
  • Patent number: 7310961
    Abstract: A heat exchange portion is configured by arranging a condenser for air conditioning, an EV radiator, and a FC radiator in one plane substantially perpendicular to a direction in which a fuel cell vehicle moves, at a front portion of the fuel cell vehicle, in order of an operating temperature, from an upper position to a lower position. A fan is provided behind the heat exchange portion such that a center thereof is closer to the condenser than to the FC radiator. In addition, a fan shroud is provided, in which plural ram pressure holes are formed in a portion which covers the FC radiator.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: December 25, 2007
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Jun Hoshi, Minobu Mizuno, Mitsuru Kimata, Susumu Ichikawa, Keiichi Yoshii, Akira Yamanaka, Yoshihiko Sonoda, Hiroshi Nonoyama
  • Publication number: 20070123188
    Abstract: Aspects for measuring receiver mixer IQ mismatch in a transceiver are described. The measuring includes providing a training signal for a receiver mixer, the training signal having periodic, uncorrelated I and Q signals. A phase mismatch in the receiver mixer is determined from IQ correlation over a unit period. A gain mismatch in the receiver mixer is determined from a power estimate of both I and Q signal for the unit period.
    Type: Application
    Filed: January 30, 2007
    Publication date: May 31, 2007
    Inventors: Larry Mo, Akira Yamanaka
  • Patent number: 7187916
    Abstract: Aspects for measuring receiver mixer IQ mismatch in a transceiver are described. The measuring includes providing a training signal for a receiver mixer, the training signal having periodic, uncorrelated I and Q signals. A phase mismatch in the receiver mixer is determined from IQ correlation over a unit period. A gain mismatch in the receiver mixer is determined from a power estimate of both I and Q signal for the unit period.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: March 6, 2007
    Assignee: Broadcom Corporation
    Inventors: Larry Y. L. Mo, Akira Yamanaka
  • Publication number: 20060178165
    Abstract: A dual band direct conversion architecture for both the receive (RX) and transmit (TX) path of a communications transceiver that minimizes the transceiver area by sharing common circuits used in both RX and TX paths is disclosed. The transceiver also allows the use of extensive digital calibration in order to achieve performance adequate to support high bit rate modulation schemes.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 10, 2006
    Inventors: Iason Vassiliou, Nikos Haralabidis, Theodore Georgantas, Akira Yamanaka, Konstantinos Vavelidis, Sofoklis Plevridis
  • Publication number: 20060029778
    Abstract: A pleated composite fiber net formed of heat-adhesive composite fibers having a fineness of 200 to 2,500 dtex serving as warps and wefts in an opening size of strand of 0.5 to 5 mm, and heat-adhered at the intersections of said composite fibers; wherein the adhesive strength of the heat-adhered portions is 20 cN or higher.
    Type: Application
    Filed: August 10, 2005
    Publication date: February 9, 2006
    Applicant: Chisso Corporation
    Inventors: Teruaki Sekiguchi, Akira Yamanaka
  • Publication number: 20050279113
    Abstract: A heat exchange portion is configured by arranging a condenser for air conditioning, an EV radiator, and a FC radiator in one plane substantially perpendicular to a direction in which a fuel cell vehicle moves, at a front portion of the fuel cell vehicle, in order of an operating temperature, from an upper position to a lower position. A fan is provided behind the heat exchange portion such that a center thereof is closer to the condenser than to the FC radiator. In addition, a fan shroud is provided, in which plural ram pressure holes are formed in a portion which covers the FC radiator.
    Type: Application
    Filed: June 13, 2005
    Publication date: December 22, 2005
    Inventors: Jun Hoshi, Minobu Mizuno, Mitsuru Kimata, Susumu Ichikawa, Keiichi Yoshii, Akira Yamanaka, Yoshihiko Sonoda, Hiroshi Nonoyama
  • Publication number: 20040224651
    Abstract: Aspects for equalization in a communications system are described. The aspects include utilizing a block code based error correction scheme in a modulation system of the communication system, and removing cursor inter-symbol interference within an error code correction word to make code word decision with minimum error power-based criteria in the block code based error correction scheme.
    Type: Application
    Filed: February 6, 2004
    Publication date: November 11, 2004
    Inventors: Akira Yamanaka, Anand Shah
  • Publication number: 20040219884
    Abstract: Aspects for measuring receiver mixer IQ mismatch in a transceiver are described. The measuring includes providing a training signal for a receiver mixer, the training signal having periodic, uncorrelated I and Q signals. A phase mismatch in the receiver mixer is determined from IQ correlation over a unit period. A gain mismatch in the receiver mixer is determined from a power estimate of both I and Q signal for the unit period.
    Type: Application
    Filed: February 6, 2004
    Publication date: November 4, 2004
    Inventors: Larry Y. L. Mo, Akira Yamanaka
  • Publication number: 20040217753
    Abstract: Aspects for measuring IQ path mismatch in signal modulation are described. The aspects include estimating a transmitter IQ mismatch in a form of gain and phase response for transmitter I and Q paths sharing a receiver path, and estimating a receiver IQ mismatch in a form of gain and phase response for receiver I and Q paths sharing a signal source. Further included is compensating for the difference of the transmitter and receiver I and Q paths using a digital FIR filter. Iterative estimation is utilized for filter tap parameters during the compensating.
    Type: Application
    Filed: February 6, 2004
    Publication date: November 4, 2004
    Inventors: Akira Yamanaka, Iason Vassiliou
  • Publication number: 20040106380
    Abstract: A transceiver for transmitting and receiving signals includes a transmitter operative to up-convert baseband signals from a baseband frequency into RF signals at a radio frequency (RF) frequency and output the RF signals, a receiver operative to receive RF signals and down-convert the RF signals into baseband signals having the baseband frequency, and a plurality of calibration paths coupling the transmitter to the receiver. Any of the calibration paths can be selected to be active when calibrating components of the transceiver. Tunable components can use calibration information to optimize transceiver performance.
    Type: Application
    Filed: September 2, 2003
    Publication date: June 3, 2004
    Inventors: Iason Vassiliou, Theodore Georgantas, Akira Yamanaka, Konstantinos Vavelidis, Sofoklis Plevridis
  • Patent number: 6586125
    Abstract: A combustion heating device for heating a fluid to be heated includes a fuel supply device that supplies the fuel to the device, and a vaporizing device that burns a portion of the fuel supplied by the fuel supply device, and vaporizes a remaining portion of the fuel by using heat generated through combustion of the portion of the fuel. The combustion heating device further includes a first air supply device that supplies air to be used for combustion of the portion of the fuel by the vaporizing device, and a second air supply device that supplies air to be used for combustion of the remaining portion of the fuel vaporized by the vaporizing device. A fuel reforming apparatus incorporating the combustion heating device as vaporizing section, and a fuel cell system including the fuel reforming apparatus are also provided.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: July 1, 2003
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukihiko Takeda, Koichi Kuwaba, Shigeru Ogino, Akira Yamanaka
  • Patent number: 6420026
    Abstract: The invention is aimed to provide a core-sheath type composite filament, in which a functional component is hardly lost due to volatilization during the melt forming; bleeding of the internally added functional component is effectively inhibited; the internally added functional component does not adversely affect spinning properties, stretching properties, strength and dimensional stability; the use of the functional component can be greatly reduced, leading to a reduction of production cost; superior functionalities of deodorizing properties and antimicrobial properties can be exhibited to a maximum extent; even when contacting with water, the functionalities can be kept over a long time; and the composite filament is highly safe to a human body. The invention is also aimed to provide a process for the production of the core-sheath type composite filament as well as a heat fused article obtained from the composite filament.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: July 16, 2002
    Assignees: Kabushiki Kaisha Erubu, Chisso Corporation
    Inventors: Hiroshi Okamoto, Shin-ichi Inoue, Tetsuo Kanagawa, Masataka Sano, Hiroki Miyamatsu, Kimi Yoshida, Nobuo Goto, Akira Yamanaka, Tomio Yamazawa, Takahiro Sugimoto
  • Patent number: 6399008
    Abstract: Processing along one circular path is performed by irradiating a laser beam to a ceramic green sheet attached on an outer peripheral surface of a rotating drum, and the processing path is changed by moving at least one of the rotating drum and a beam irradiated position through a predetermined distance in the direction of drum centerline each time the processing on one circular path is completed. If the laser beam is intermittently irradiated to the ceramic green sheet, a matrix of through holes or concave portions can be easily formed in the ceramic green sheet.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: June 4, 2002
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Mutsuo Nakazawa, Satoshi Takakuwa, Hiroshi Takahashi, Akira Yamanaka, Mitsuo Ueno, Katsuhiro Oyama
  • Publication number: 20010053616
    Abstract: A method of manufacturing multilayer electronic parts including a processing step asnd an apparatus for manufacturing multilayer electronic parts including a processing apparatus for subjecting a green sheet to a predetermined processing by irradiating it with the laser beam. A green sheet attached to the periphery of one of two drums is subjected to the predetermined processing by irradiating it with the laser beam from a beam irradiation means while allowing the drum to rotate about a drum's centerline as an axis and travel in the direction of the drum's centerline. And while subjecting the green sheet to the processing, processed green sheets are detached from the periphery of the other drum and unprocessed green sheets are attached to it with a sheet attaching/detaching means.
    Type: Application
    Filed: December 15, 2000
    Publication date: December 20, 2001
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Mutsuo Nakazawa, Mitsuo Ueno, Akira Yamanaka, Katsuhiro Oyama, Satoshi Takakuwa, Hiroshi Takahashi
  • Publication number: 20010031387
    Abstract: A combustion heating device for heating a fluid to be heated includes a fuel supply device that supplies the fuel to the device, and a vaporizing device that burns a portion of the fuel supplied by the fuel supply device, and vaporizes a remaining portion of the fuel by using heat generated through combustion of the portion of the fuel. The combustion heating device further includes a first air supply device that supplies air to be used for combustion of the portion of the fuel by the vaporizing device, and a second air supply device that supplies air to be used for combustion of the remaining portion of the fuel vaporized by the vaporizing device. A fuel reforming apparatus incorporating the combustion heating device as vaporizing section, and a fuel cell system including the fuel reforming apparatus are also provided.
    Type: Application
    Filed: April 10, 2001
    Publication date: October 18, 2001
    Inventors: Yukihiko Takeda, Koichi Kuwaba, Shigeru Ogino, Akira Yamanaka
  • Patent number: 5513951
    Abstract: The present invention relates to a fan having a plurality of equiangularly spaced, radially extending blades. The spacing provided between adjacent blades is substantially constant along the entire radial length of the blade for increasing a blowing efficiency, while also allowing a mold separation operation along the axial direction during the formation of the fan using a mold. In a case where the blade is a sweep-forward blade, the number of the blades is seven or more and has a sweep-forward angle of the blades between 35 to 45 degrees. Finally, in case where an electric motor for rotating the fan is supported by stays, the number of stay member and the number of blades, which are not evenly dividable by each other, should satisfy a relationship of 2,000<x.times.y.times.Nf/60, where N.sub.f is a rotational speed of the fan.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: May 7, 1996
    Assignee: Nippondenso Co., Ltd.
    Inventors: Shuji Komoda, Kazuhiro Takeuchi, Akira Yamanaka
  • Patent number: 5481514
    Abstract: An auto player technique is provided in a recording/reproducing apparatus storing a plurality of disks, wherein size of the apparatus can be reduced in height and width and positioning accuracy can be increased. A pair of tray stockers are disposed right and left. A lifter transporting the tray in a vertical direction is disposed behind the tray stockers. The lifter includes a tray extracting mechanism selectively extracting disks from the tray stockers. The tray extracting mechanism simultaneously engages with two trays disposed at the same height of the right and left tray stockers when extracting trays. A recording/reproducing device is disposed below the lifter. A drive mechanism engages with the recording/reproducing device to shift it in a right and left direction. A lock mechanism is provided to engage with the recording/reproducing device when the drive mechanism is disengaged from the recording/reproducing device.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: January 2, 1996
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hidetoshi Yamasaki, Masae Murata, Yukio Noya, Yasukazu Yomogita, Manabu Taguchi, Akira Yamanaka, Naoki Sibuya
  • Patent number: 5466120
    Abstract: A blower comprising an axial-flow fan covered by a cylindrical shroud and a motor for driving the fan. The motor is supported by radially extending stays at the central region of the fan on the suction side of the fan. The stays are integrally formed with a central support for the motor and an outer cylindrical shroud covering the fan. Each of the stays is bent and subdivided into an outer portion near the shroud and an inner portion near the support ring. The outer portion extends along a radial line about the axis of the fan, and the inner portion extends at an inclination to a radial line about the axis of the fan so as to reduce noise induced when air passes through the stays and the fan. The blower can also include a protection net comprising annular ribs circumferentially interconnecting the adjacent stays. Each of the annular ribs has a streamlined cross-sectional shape.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: November 14, 1995
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kazuhiro Takeuchi, Akira Yamanaka
  • Patent number: 5307101
    Abstract: A camera using a film cartridge having a shaft for winding a film and intercepting light, includes: a cartridge chamber for accommodating the film cartridge; a driving unit; a driving source for generating force for driving the driving unit; a transmitting device; and a limiting device. The driving member engages the shaft of the film cartridge accommodated in the cartridge chamber, and rotates the shaft in the film unwinding direction to remove the film from the film cartridge. The transmitting device is provided between the driving source and the driving unit, and transmits the force generated by the driving source to the driving unit. The limiting device is provided in the transmitting device, and limits the force to be transmitted to the driving unit so as to feed the film in the film unwinding direction.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: April 26, 1994
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Junichi Tanii, Masaaki Chikasaki, Nobuya Miki, Akira Yamanaka, Ikushi Nakamura, Masayoshi Horikawa