Patents Assigned to NEC
  • Patent number: 7660469
    Abstract: An image decoding apparatus includes an analyzing section and an image decoding section. The analyzing section determines a process quantity of a coded image data to each of a plurality of image decoding processes within a unit process time based on a parameter of the coded image data, prior to the plurality of image decoding processes. The image decoding section carries out each of the plurality of image decoding processes to the coded image data for the determined process quantity such that a decoded image data is generated from the coded image data.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: February 9, 2010
    Assignee: NEC Electronics Corporation
    Inventor: Yoichi Katayama
  • Patent number: 7658640
    Abstract: A cable connector 1 includes a cover insulator adapted to clamp a cable. The cable has an end portion bent by a bending angle ?. The cover insulator is coupled to a base insulator. The base insulator holds a terminal having an end portion bent by a bending angle ?. Herein, the angles ? and ? satisfy the relationship given by ?<??? (rad) so that the end portion of the cable is pressed by the end portion of the terminal.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: February 9, 2010
    Assignees: Japan Aviation Electronics Industry, Limited, NEC Corporation
    Inventors: Katsuhiko Nakazawa, Masahiro Yamauchi
  • Patent number: 7660597
    Abstract: A PBX, when notified information of an originating manipulation such as dialing of a receiver's number from a keyboard connected with a PC, judges whether an origination request is from the PC or a first terminal. In a case of the request being from the PC, the PBX performs number analysis processing of the PC which is the originator. The PBX judges whether there is information about a terminal associating with the terminal requesting the origination, and when there is information for the terminal, performs to connect with the associating terminal, and processes the origination request to thereby connect with the counterpart terminal. When there is no information about the terminal, the PBX processes the origination request as usual to thereby connect with the counterpart terminal.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventor: Shigeo Fujii
  • Patent number: 7660530
    Abstract: An optical transmission apparatus includes a transmitting unit for transmitting an optical signal with a specified wavelength, a multiplexing unit for multiplexing the optical signal with the specified wavelength and an optical signal with a wavelength other than the specified wavelength and outputting the multiplexed signal as a wavelength division multiplexed optical signal, an optical amplifier for amplifying the wavelength division multiplexed optical signal outputted from the multiplexing unit, a level detecting unit detecting a variation of an optical power of the wavelength division multiplexed optical signal inputted to the optical amplifier, and a level adjusting unit for adjusting, when a variation of the optical power of the wavelength division multiplexed optical signal is detected by the level detecting unit, a transmitting power of the optical signal with the specified wavelength transmitted from the transmitting unit so that an output power becomes a level before the variation.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventor: Katsuyuki Mino
  • Patent number: 7660360
    Abstract: Disclosed is a coded orthogonal frequency-division multiplexing (OFDM) system and method for reducing a peak-to-average power ratio (PAPR). The system and method include a modulator configured to modulate (e.g., using quadrature amplitude modulation (QAM)) coded bits into symbols. The system and method also include an inverse discrete fourier transform (IDFT) module to perform an IDFT on the symbols to produce an OFDM signal. The system and method measure the PAPR of the OFDM signal and transmit the signal to a receiver if the PAPR of the signal is less than a threshold PAPR.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: February 9, 2010
    Assignee: NEC Laboratories America, Inc.
    Inventors: Guosen Yue, Xiaodong Wang, Mohammad Madihian
  • Patent number: 7658798
    Abstract: A metal fine particle is adhere to a predetermined location on a substrate. A resist film containing a metallic compound dispersed therein is formed on a substrate (101). A patterning of the resist film is conducted by a lithography. The substrate (101) having the patterned resist formed thereon is heated within an oxygen atmosphere to adhere a metal fine particle (106) to the surface of the substrate (101), while removing the resin in the patterned resist.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventors: Masahiko Ishida, Hiroo Hongo, Jun-ichi Fujita
  • Patent number: 7659878
    Abstract: A display control device has: a shift register generating n shift pulses in series; a data hold block configured to hold n gradation data; and a DA converter for converting the n gradation data into corresponding gradation voltages. The data hold block includes: n first latch circuits configured to respectively latch the n gradation data in series in synchronization with the n shift pulses; and n second latch circuits provided between the DA converter and the n first latch circuits. An electrical connection between the first latch circuits and the second latch circuits is cut off while the first latch circuits receive the n gradation data. After the first latch circuits finish latching all the gradation data, the n gradation data are simultaneously supplied to the DA converter from the first latch circuits through the second latch circuits.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: February 9, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Shinji Endou, Takayuki Doi
  • Patent number: 7660283
    Abstract: A dual mode mobile wireless communication terminal detects a reception field level of another second communication system when the reception field level of a first communication system, with which communication is currently taking place, has dropped to or below a prescribed threshold. When the second communication system has priority, the terminal selects the second communication system. When prescribed operation is executed on the terminal, the terminal can also detects a reception field level of another second communication system.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventor: Takahiro Kaneko
  • Patent number: 7660707
    Abstract: A model detection apparatus comprises a number of estimate parameter memories for storing mutually different distribution estimate parameters representing occurrences of input data. A number of distribution estimators are respectively associated with the parameter memories for producing distribution estimate parameters from data stored in the associated parameter memories and from a series of input data, and updating the associated parameter memories with the produced parameters. A model series memory stores candidate models corresponding in number to the parameter memories. A model series estimator produces candidate models using the series of input data, the stored distribution estimate parameters and the stored candidate models, and updates the model series memory with the produced candidate models. An optimal model series calculator calculates an optimal series of models from the candidate models stored in the model series memory.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventors: Yuko Maruyama, Kenji Yamanishi
  • Patent number: 7660216
    Abstract: To provide a disk reproducing apparatus capable of reading data at a lower error rate without requiring a complicated circuit configuration. An embodiment of the present invention provides a disk reproducing apparatus for reproducing a data signal based on a signal read from a disk and having a clock cycle that is an integral multiple of a cycle of a reproduction clock, including: a clock generating unit generating the reproduction clock based on an input signal obtained by binarizing the signal read from the disk; an error component detecting unit detecting an error component in the input signal; a threshold storage unit storing a threshold value for determining the error component; and a data signal reproducing unit reproducing the data signal in the input signal based on the error component detected by the error component detecting unit and the threshold value stored in the threshold storage unit.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: February 9, 2010
    Assignee: NEC Electronics Corporation
    Inventor: Tomohiro Iida
  • Patent number: 7658761
    Abstract: A balloon expandable superelastic stent is made of a Ti—Ni—Nb (the content of Nb being at least 3 at %) shape memory alloy. A shape recovery temperature of the stent is lower than a living body temperature in an unloaded state after shape memory treatment. The shape recovery temperature exceeds the living body temperature after the stent is mounted to a catheter and released from the catheter in a living body.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: February 9, 2010
    Assignees: NEC Tokin Corporation, Japan Stent Technology Co., Ltd.
    Inventors: Kiyoshi Yamauchi, Kouji Mori, Shuzou Yamashita
  • Patent number: 7659772
    Abstract: A semiconductor integrated circuit device includes: a switching current observer for observing a switching current; a leakage current observer for observing a leakage current; a comparator which compares the switching current and the leakage current with each other; a threshold voltage controller for controlling a substrate bias voltage in order to make a ratio of the switching current and the leakage current constant; a delay observer for observing a delay amount; and a power supply voltage controller for controlling a power supply voltage in order to keep the delay amount in a predetermined range. In the semiconductor integrated circuit device, a process which enables the minimization of an operation power is carried out by controlling the threshold voltage to make the ratio of the switching current and the leakage current constant at a given clock frequency and controlling the power supply voltage to guarantee the operating speed.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventors: Masahiro Nomura, Koichi Takeda
  • Patent number: 7660293
    Abstract: There is disclosed a private branch exchange in which an SIP terminal is capable of receiving great variety of services provided by the private branch exchange without upgrading version of software of the SIP terminal itself. A standard SIP protocol control module 16, an expanded SIP protocol a control module 17, and an expanded SIP protocol b control module 18 are disposed for SIP system protocol corresponding terminals, convert signals (requests) from the SIP system protocol corresponding terminals into signals of a protocol inside an IP-PBX 1 to transmit the signals to a PBX basic connection process providing module 12, and convert a signal (responses to the request, or a request to the SIP system protocol corresponding terminal) from the PBX basic connection process providing module 12 into a signal of an SIP system protocol to transmit the signal to the SIP system protocol corresponding terminal.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventors: Yoshio Itagaki, Shinobu Kimata
  • Patent number: 7660363
    Abstract: A lattice space time coding arrangement for transmission systems is disclosed which enables construction of lattice space time codes with improved error rate performance for arbitrary receiver structures.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: February 9, 2010
    Assignee: NEC Laboratories America, Inc.
    Inventors: Ignacio Berenguer, Xiaodong Wang, Mohammad Madihian
  • Patent number: 7659567
    Abstract: In a semiconductor device, a semiconductor substrate is sectioned into a logic-circuit formation section in which a plurality of logic circuits are formed, and a memory formation section in which a plurality of memory cells are formed. A multi-layered insulating layer is formed on the substrate, and a conductive structure is formed in the insulating layer at the logic-circuit formation section. Capacitors are formed in the insulating layer at the memory formation section. Each of the capacitors includes a lower capacitor electrode, a capacitor dielectric layer formed on the lower capacitor electrode, and an upper capacitor electrode formed on the capacitor dielectric layer, with upper is end faces of the upper capacitor electrodes being coplanar with an upper end face of the conductive structure. Bit-line layers are formed in the insulating layer below the lower capacitor electrodes at the memory formation section.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: February 9, 2010
    Assignee: NEC Electronics Corporation
    Inventor: Yasuyuki Aoki
  • Patent number: 7660599
    Abstract: A base station of the present invention performs transmission power control quickly with maintaining communication quality in mobile communications systems, by setting up priority about transmission power control and performing transmission power control sequentially from a channel with a high priority. A channel priority setting unit outputs priority information indicating priority for transmission power control about a plurality of channel information. A power calculation unit outputs total power information of all channels about the plurality of channel information. A power adjustment unit performs power adjustment to the channel information selected on the basis of the priority information when the total power information has larger value than maximum transmission power information.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventor: Tomohiro Azuma
  • Publication number: 20100029257
    Abstract: In a cellular phone 1 that allows a telephone talk to be had via cellular phone communication and wireless LAN communication, a telephone directory memory 12 stores a phone number and an SIP address. An abbreviated dialing memory 13 stores in association, a memory number indicating a predetermined key set for abbreviated dialing, a phone number or an SIP address, and bearer information designating, communication means used for making a call. When a user pushes a key set for abbreviated dialing, a CPU 11 acquires a phone number or an SIP address and bearer information that are associated with the pushed key. The CPU 11 controls a cellular phone sending/receiving unit 14 and a wireless LAN sending/receiving unit 15 to make a call to the acquired phone number or SIP address by using the communication means indicated by the acquired bearer information.
    Type: Application
    Filed: August 29, 2007
    Publication date: February 4, 2010
    Applicant: NEC CORPORATION
    Inventor: Hironobu Ariyoshi
  • Publication number: 20100028767
    Abstract: A stacked secondary battery is formed by laying plate-shaped positive electrodes and plate-shaped negative electrodes one on the other by way of separators, wherein a collector is disposed at the front end of the end facet of each of the positive electrodes or the negative electrodes as viewed in a direction orthogonal relative to the stacking direction and has an active substance layer formed on the collector by applying slurry of particles of an active substance with a gap separating it from the front end or the electrode active substance layer is made to show a thickness varying from the front end toward the inside.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 4, 2010
    Applicant: NEC TOKIN CORPORATION
    Inventors: Tsuyoshi Inose, Takao Daidoji
  • Publication number: 20100027994
    Abstract: A method includes generating an optical orthogonal frequency division multiplexing OFDM signal with in-phase and quadrature-phase components; varying an RF carrier according to the in-phase and quadrature-phase components; and modulating a phase of a lightwave carrier according to the varied RF carrier to generate an optical OFDM signal with equalized amplitude.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Lei Xu, Yutaka Yano, Ting Wang, Junqiang Hu, Makoto Shibutani
  • Patent number: D609700
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventor: Yoshihide Takahashi