Patents Assigned to NEC
  • Patent number: 7633856
    Abstract: A multi-node system for making the data transfer between nodes via each internodal crossbar switch comprises a plurality of internodal crossbar switches having a switch for transmitting the transfer data from a plurality of nodes to the node of transfer destination. If a fault occurs in the switch, the system is configured to make the data transfer between the nodes via any other internodal crossbar switch than the internodal crossbar switch having the switch where the fault occurs.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventor: Yasuhiro Ikawa
  • Patent number: 7633641
    Abstract: An apparatus for transmitting image data through a network has an image rendering unit, an image processing device, a memory device, and an image transmitter.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: December 15, 2009
    Assignee: Nec ViewTechnology, Ltd.
    Inventor: Eisaku Ishii
  • Patent number: 7633571
    Abstract: Recognizing the phenomenon that the film thickness of a semiconductor layer causes shift in the OFF-leak current characteristic that corresponds to back-gate voltage of a thin-film transistor, the average film thickness of a semiconductor layer is prescribed such that the shift of the OFF-leak current characteristic is reduced. Alternatively, the film thickness distribution (the ratio of the occurrence of each region having different film thickness) in the direction of the channel width of the semiconductor layer is prescribed.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventors: Takahiro Korenari, Hiroshi Tanabe, Nobuya Seko
  • Patent number: 7633484
    Abstract: A display unit includes a display panel having a display screen on which images are displayed, and (b) a touch panel covering the display screen therewith and detecting a touch thereto made by a user. The touch panel detects the touch in accordance with touch-panel drive signals input thereto. The display panel displays images in accordance with display-drive signals input thereto. The touch panel is switched between a first condition in which the touch-panel drive signals are input into the touch panel and a second condition in which the touch panel is electrically open.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC LCD Technologies, Ltd
    Inventor: Yukihiro Ito
  • Patent number: 7631422
    Abstract: A terminal resistor is provided at the end of a bus formed on a wiring substrate. An insulator having a large dielectric loss angle is provided in the vicinity of the terminal resistor to absorb high frequency electromagnetic waves in the vicinity. This arrangement permits successful transmission of digital signals in the GHz region using a conventional terminal resistor.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: December 15, 2009
    Assignees: Rohm Co., Ltd., Oki Semiconductor Co., Ltd., Sanyo Electric Co., Ltd., Sony Corporation, Kabushiki Kaisha Toshiba, NEC Corporation, Sharp Kabushiki Kaisha, Renesas Technology Corp., Fujitsu Microelectronics Limited, Panasonic Corporation
    Inventors: Kanji Otsuka, Tamotsu Usami
  • Patent number: 7634265
    Abstract: A radio wave characteristic estimation system and its method estimate radio wave propagation characteristics in an investigation object area in a part of a coverage area of a wireless system, which becomes an object of the estimation, at high speed and with high precision, when the coverage area is wide. In a three-dimensional area including a plurality of contents, a transmission source and the investigation object area to be investigated as to the propagation environment of radio waves emitted from the transmission source are provided. When estimating a radio wave propagation environment in the investigation object area, a general radio wave propagation situation acquisition unit finds general radio wave propagation situation within the investigation object area or in the vicinity thereof. A pseudo transmission source preparation unit prepares finite pseudo transmission sources to simulate the general radio wave propagation situation.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventors: Hiroto Sugahara, Yoshinori Watanabe, Takashi Ono
  • Patent number: 7633310
    Abstract: A semiconductor integrated circuit includes an output driver, a replica driver, a replica resistor, and an impedance adjustment circuit. The output driver is configured to be capable of changing current driving capability. The replica driver is configured to be capable of changing current driving capability. The replica resistor is connected to an output of the replica driver. The impedance adjustment circuit is configured to adjust the current driving capability of the output driver and the replica driver, based on an output voltage of the replica driver. In addition, the output driver, the replica driver, the replica resistor, and the impedance adjustment circuit are mounted in an integrated circuit package.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: December 15, 2009
    Assignee: NEC Electronics Corporation
    Inventor: Tetsuo Fukushi
  • Patent number: 7633986
    Abstract: A distributed feedback laser diode comprises a phase-shifting portion in diffraction gratings. The magnitude of a phase shift in the phase-shifting portion is 8?/40 to 9?/40, ? representing twice the distance between the diffraction gratings. A main mode stands on a lower wavelength side than the center of a stop band when an injected current is of a level of a threshold current, whereas the main mode is shifted to the center of the stop band and a sub mode is suppressed from growing when the injected current is of a level of an operating current.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: December 15, 2009
    Assignee: NEC Electronics Corporation
    Inventors: Shotaro Kitamura, Yasutaka Sakata
  • Patent number: 7633297
    Abstract: An internal impedance detecting apparatus for detecting the internal impedance of a secondary battery with high accuracy is provided. Processor 106 divides the variation of each voltage detected by voltage change detector 103 by the variation of the current detected by current change detector 105 for the same detecting time as that for the voltage variations to compute the internal impedances. Judging unit 107 checks the variations of the internal impedances computed by processor 106 and judges from the check result whether or not the internal impedances have reliability. Only when judging unit 107 judges that the internal impedances have reliability, generator 109 generates output internal impedance according to the internal impedances.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: December 15, 2009
    Assignees: NEC Corporation, Fuji Jukogyo Kabushiki Kaisha
    Inventor: Mitsunori Ishii
  • Patent number: 7633167
    Abstract: A falling off of a through electrode is inhibited without decreasing a reliability of a semiconductor device including a through electrode. A semiconductor device 100 includes: a silicon substrate 101; a through electrode 129 extending through the silicon substrate 101; and a first insulating ring 130 provided in a circumference of a side surface of the through electrode 129 and extending through the semiconductor substrate 101. In addition, the semiconductor device 100 also includes a protruding portion 146, being provided at least in the vicinity of a back surface of a device-forming surface of the semiconductor substrate 101 so as to contact with the through electrode 129, and protruding in a direction along the surface of the semiconductor substrate 101 toward an interior of the through electrode 129.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: December 15, 2009
    Assignee: NEC Electronics Corporation
    Inventors: Masaya Kawano, Koji Soejima, Nobuaki Takahashi
  • Patent number: 7633580
    Abstract: A liquid crystal display panel of the type having reflection electrodes tends to have an image-forming plane undesirably yellowed due to the wavelength dependency of transparency observed in an orientation layer on the reflection electrodes; aluminum-neodymium alloy, which has neodymium content between 5 weight % to 10 weight %, is deposited on an inter-layered insulating layer at the substrate temperature equal to or less than 170 degrees in centigrade for the reflection electrodes so that the surface morphology is represented by average pitches equal to or less than 1 micron; even though the orientation layer has the wavelength dependency of transparency, the reflection electrodes make the optical path in the orientation layer equalized so that the image-forming plane is not yellowed.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 15, 2009
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Akitoshi Maeda, Atsushi Yamamoto, Tomohide Shindoh
  • Patent number: 7633853
    Abstract: Provided is a method of decoding channelisation code set information to determine the number of channelisation codes and the code offset in a spread spectrum data transmission, where the channelisation code set information includes a first group of bits encoding the number of channelisation codes and a second group of bits encoding the code offset, the method includes deriving the number P of channelisation codes according to P = C + ? m - A n ? , and deriving the code offset O according to O = ? P n ? × ( m - 2 ? B ) + ( B + 1 ) ; where m is the maximum number of multicodes allocated from the spread spectrum data transmission, n = ? m 2 ? + 1 , A is the value of the first group of bits of the channelization code set information, B is the value of the second group of bits of the channelisation code set information, and C = A + ? B m - A ? × ( m - 2 ? A ) .
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventor: Phong Nguyen
  • Patent number: 7632551
    Abstract: This invention provides a process for preparing a reactive graphite-like layered material with high chemical reactivity while maintaining stability of a base material. In the preparation process according to this invention, first, the treatment for reducing the number of dangling bonds in the vicinity of the vacancy to form an introducing site is conducted by binding atoms together with each other, which atoms are adjacent to a vacancy in a graphite-like layered material. Then, atoms 3 and 4 to be introduced, i.e., a diatomic molecule made of atoms constituting the graphite-like layered material are introduced into the introducing site formed in advance. Then, new bonds are generated between introduced atoms 3, 4 and the graphite-like layered material.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventor: Yoshiyuki Miyamoto
  • Patent number: 7633516
    Abstract: A portable terminal having a content reproduction function is provided with: a speaker, a display, and a control circuit for, when the reproduction function is being executed in a state in which an operation mode for halting sound output from the speaker has been selected, both halting the output of sound from the speaker and displaying on the display a video picture and a caption that is relevant to the video picture.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventor: Kengo Tamura
  • Patent number: 7634264
    Abstract: A method according to the present invention comprises determining an available information rate for communication, via a first base station, between a plurality of terminals and a second base station based on link capacity information for wireless communication between the first base station and the second base station, and controlling each of information rates for the communication between the plurality of terminals and the second base station based on the available information rate. Here, the plurality of terminals and the first base station being in a mobile object, the second base station being outside the mobile object.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventor: Masahiko Yahagi
  • Patent number: 7633138
    Abstract: The semiconductor device 1 includes an insulating interlayer 10, interconnects 12a to 12c, an insulating interlayer 20, and a capacitor element 30. On the insulating interlayer 10 and the interconnects 12a to 12d, the insulating interlayer 20 is provided via a diffusion barrier 40. On the insulating interlayer 20, the capacitor element 30 is provided. The capacitor element 30 is a MIM type capacitor element, and includes a lower electrode 32 provided on the insulating interlayer 20, a capacitor insulating layer 34 provided on the lower electrode 32, and an upper electrode 36 provided on the capacitor insulating layer 34. The interface S1 between the insulating interlayer 20 and the capacitor element 30 is generally flat. The lower face S2 of the insulating interlayer 20 includes an uneven portion at a position corresponding to the capacitor insulating layer 34.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: December 15, 2009
    Assignee: NEC Electronics Corporation
    Inventors: Toshiyuki Takewaki, Takeshi Toda
  • Patent number: 7633335
    Abstract: A current source circuit includes a voltage output section which outputs a voltage signal; a current source section and a conversion section. The current source section has at least one current source block comprising a plurality of current sources, each of which outputs an output current. The conversion section is provided between the voltage output section and the current source section and outputs a reference current to the plurality of current sources of the at least one current source block based on the voltage signal such that the output current from each of the plurality of current sources is set based on the reference current.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: December 15, 2009
    Assignees: NEC Electronics Corporation, NEC Corporation
    Inventors: Katsuyuki Fujikura, Katsumi Abe, Masamichi Shimoda
  • Patent number: 7634140
    Abstract: Feature decision means (303) decides a set of features appropriate for pattern identification from a plenty of feature candidates generated by feature candidate generation means (302) by using learning patterns stored in learning, pattern storage means (301). The feature decision means (303) successively decides features according to a reference of information maximization under the condition that the decided feature is known while adding an effective noise to the learning pattern and performs information amount calculation approximately and at a high speed while merging the learning patterns into a set of N elements when required. As a result, it is possible to automatically create a feature set appropriate for pattern identification of a high performance without requiring enormous learning. Moreover, by using a transition table (305) containing transitions between sets, it is possible to perform pattern judgment with a high efficiency.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: December 15, 2009
    Assignee: NEC Corporation
    Inventors: Kenji Okajima, Hitoshi Imaoka, Masanobu Miyasita
  • Patent number: 7633312
    Abstract: In data transmission apparatus, a transmission line is connected with a transmitting unit and includes a first transmission line and a second transmission line. A receiving unit is connected with the transmission line. A terminating resistance is connected between a first reception node connected with the first transmission line on a receiving unit side and a second reception node connected with the second transmission line on a receiving unit side. The transmitting unit transmits a transmission data to the receiving unit through the transmission line. The receiving unit detects a reception data corresponding to the transmission data based on an amplitude voltage as a voltage difference between the first reception node and the second reception node.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: December 15, 2009
    Assignee: NEC Electronics Corporation
    Inventor: Yutaka Saeki
  • Patent number: 7633332
    Abstract: A boosting circuit includes a boosting capacitor to which an input voltage is applied; a smoothing capacitor to which a boosted voltage is applied; a discharging MOS transistor configured to connect said boosting capacitor and said smoothing capacitor in a discharging operation during a boosting operation period such that charge stored in said boosting capacitor is discharged to said smoothing capacitor; and a charging MOS transistor configured to apply the input voltage to said boosting capacitor in a charging operation during the boosting operation period to charge up said charging capacitor. A back gate of said charging MOS transistor and a back gate of said discharging MOS transistor are connected to a common node, and said common node is connected to different voltages in the charging operation and the discharging operation.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: December 15, 2009
    Assignee: NEC Electronics Corporation
    Inventor: Keigo Ootani