Nec Corporation

Jnc Corporation

Tokyo Shibaura Denki Kabushiki Kaisha

Other

Kabushiki Kaisha Toshiba

Mitsubishi Electric Corporation

Tokyo Shibaura Electric Co., Ltd.

Sofsera Corporation

Yoshihiro Matsumoto

Yasuto Umeda

Takashi Kuriyama

Masami Todokoro

Shigeyuki Aoyama

Yuichi Yamamoto

Yoshinori Honma

Masashi Tachigori

Yasuo Matsumoto

Hajime Kurii

Masami Shiina

Masaki Shiraiwa

Yuka Yamamoto

Takayuki Yanagisawa

Naoki Suzuki

Sumei Sun

Tsutomu Tajima

Hiroki Goto

Kiyoshi Onohara

Tetsuyuki Suzaki

Hiroki Sugimoto

Kok Leong Cheah

Toshibumi Kawano

Akihiro Uchida

Tetsuo Tateyama

Lars Rasmussen

Teng Joon Lim

Ken Masegi

Daijirou Inami

Takashi Oyama

Shohei Okazaki

Hirokazu Kobayashi

Kenzou Tan

Kunio Takezawa

An optical distance measurement device includes: a photodetector including PDs for receiving interference light output from an optical interference unit and outputting detection signals of the interference light; and a switch for selecting one of the detection signals output from the PDs, in which a distance calculation unit calculates a distance to a measurement object on the basis of the detection signal selected by the switch.

Optical distance measurement device and processing device

An adsorbent, which can be produced by a method in which a particle size, a pore size, a specific surface area or the like can be easily controlled, and is suitable for isolation of biomolecules. The adsorbent contains aggregates of calcium phosphate-based particles, and has an average pore size of 15 to 36 nanometers and a specific surface area of 40 to 90 m/mL when measurement is carried out by mercury porosimetry.

Adsorbent and method for producing the same

A method for preparing a chromatography medium having the properties of high virus adsorption and high fluidity, and a method for producing a virus vaccine using the chromatography medium are provided. The chromatography medium is obtained by forming a sulfated polysaccharide bound with porous particles having an exclusion limit molecular weight of 6000 Da or less when pure water is used as mobile phase and standard polyethylene glycol is used and an average particle size in the range of 30-200 &#x3bc;m.

Preparation method of chromatography medium

The present invention provides a porous cellulose gel having a high mechanical strength capable of being operated at a higher flow rate, and a method for producing the same. To a suspension liquid of cellulose particles, a crosslinking agent in an amount of from 4 to 12 times the amount of the cellulose monomer in terms of moles and an alkali in an amount of from 0.1 to 1.5 times the amount of the crosslinking agent in terms of moles are added continuously dropwise or added dividedly over a prescribed period of time, whereby flow rate characteristics of a resulting porous cellulose gel can be enhanced. According to the invention, the production efficiency of a polymer substance, such as a nucleic acid and a protein can be enhanced.

Porous cellulose gel, method for producing the same, and use thereof

A Chromatography medium having the properties of high virus adsorption and high fluidity, and a method for producing a virus vaccine using these are provided. The Chromatography medium is formed by binding a sulfated polysaccharide to porous particles having an exclusion limit molecular weight of 6000 Da or less when pure water is used as mobile phase and standard polyethylene glycol is used and an average particle size in the range of 30-200 &#x3bc;m.

Chromatography medium, preparation method of the same, and method for producing virus vaccine using the chromatography medium

The present invention provides a chromatography packing material having improved flow rate characteristics and adsorption characteristics. In particular, the present invention provides a chromatography packing material suitable for separation and purification of immunoglobulin in the manufacture of antibody preparations. A porous cellulose gel, which is made by adding polysaccharides having a limiting viscosity of 0.21 to 0.90 dL/g to porous cellulose particles, the dry weight per unit volume of the porous cellulose gel being 1.06 to 1.40 times the dry weight per unit volume of the porous cellulose particles, is used. By adding a predetermined amount of polysaccharides having a predetermined limiting viscosity to porous cellulose particles, flow rate characteristics and adsorption characteristics can be improved.

Cellulose gel for purification of immunoglobulin

Porous cellulose gel, method for producing the same and use thereof

In a receiver operable in response to a data signal, an eye aperture size is detected along a time axis by an eye aperture detection circuit and is controlled by a control circuit so that it becomes a maximum. The eye aperture detection circuit determines different decision time points of the same level arranged along a time axis and judges whether or not an error is caused to occur at each of the decision time points, so as to detect the eye aperture size and to produce detection results. The control circuit processes the detection results in accordance with a predetermined algorithm to successively vary the eye aperture size and to keep the data signal at an optimum amplitude.

Receiver and receiving method capable of detecting an eye aperture size formed by reception data signals

According to a decision threshold voltage controlling method of feeding an optimum decision threshold voltage to a clock and data recovery circuit which converts an optical input signal into an electric signal, extracts a clock component from an input data signal amplified to a predetermined amplitude, and identifies 1 or 0 in the input data signal at a timing of the clock, three decision points are suitably controlled, by selectively performing a process of controlling the spaces of the three decision points, a process of moving the three decision points with their spaces kept as they are, and a process of changing an error pulse measurement time, depending on a measurement result of the error pulse.

Decision threshold voltage control circuit and decision threshold voltage controlling method of clock and data recovery circuit, optical receiver, and decision threshold voltage control program

This optical receiving device for discriminating and recovering a data signal, which results from converting an optical signal input through a dispersion equalizer into an electrical signal and amplifying it to a pre-determined amplitude, by using a clock and data recovery circuit for discriminating a data signal at the decision point controlled to achieve the optimum position controls the dispersion characteristics of a dispersion equalizer so that the error count in the recovered data signal by using a clock and data recovery circuit will be minimized by controlling the eye pattern of the data signal which has been amplified to a pre-determined amplitude.

Optical receiving device, waveform optimization method for optical data signals, and waveform optimization program for optical data signals

At a base station a CDMA received signal coming in through an antenna is fed to a radio frequency unit (RFU) or high frequency unit The RFU demodulates a baseband signal BB from a signal RF and delivers the signal BB to an analog-to-digital converter (A/D) The resulting digital signal output from the A/D is input to a hybrid interference canceller (HIC) as a received signal Rx Data The HIC divides users into two groups and assigns one combination of a parallel interference canceller and a serial interference canceller to each group. The HIC cancels interference contained in the received signal Rx Data for thereby estimating symbols particular to a plurality of users.

Receiving device and channel estimator for use in a CDMA communication system

A photo receiver branches a data signal obtained by photoelectric conversion and supplies the signal to a signal cutoff detector. Depending on the degree of an autocorrelation of a data signal obtained by an autocorrelation detector, the signal cutoff detector detects abnormality/normality. Depending on a level of a control signal to a VCO contained in a frequency phase-locked loop for use in clock generation, an out-of-synchronization detector makes determination of abnormality/normality. Outputs of both the detectors are ORed at an alarm processor and when at least one of the detectors detects abnormality, the detector generates an alarm.

Signal input cutoff detector, photo receiver and signal input cutoff detecting method

In a chip-size package, an insulator tape is formed with a conductive wire having a wider section which is greater in width than other sections of the wire and a conductive bump connected to the wider section of the wire. The insulator tape is further formed with a first plurality of slits arranged on one side of the wider section of the wire and a second plurality of slits arranged on the other side of the wider section. An integrated circuit chip is provided having a conductive pad connected to the copper bump.

Chip-size integrated circuit package having slits formed in an insulator tape

The present invention provides an automatic identification level control circuit, an identification level control method, an automatic identification phase control circuit, an identification phase control method, and an optical receiver, capable of stably setting an optimal identification level or identification phase. An automatic identification level control circuit of the present invention includes a coupling capacitor, an identification circuit, a level fluctuation detection circuit, an identification voltage control circuit, and a low-pass filter. The identification circuit includes limiter amplifiers and flip flops. The level fluctuation detection circuit includes exclusive OR circuits.

AUTOMATIC IDENTIFICATION LEVEL CONTROL CIRCUIT, IDENTIFICATION LEVEL CONTROL METHOD, AUTOMATIC IDENTIFICATION PHASE CONTROL CIRCUIT, IDENTIFICATION PHASE CONTROL METHOD, OPTICAL RECEIVER, AND OPTICAL COMMUNICATION SYSTEM

In a trouble analysis apparatus, a cause of an accident which is empirically and statistically obtained, and a plurality of effects corresponding to the cause are entered in advance at a keyboard and stored as a data base in a magnetic disk unit. In this case, a sum of basic probabilities of the plurality of effects for the cause is set to be 1. A pre-processor calculates as upper (or lower) probability of a subset of the result by using the Dempster & Shafer probability theory. The pre-processor uses the upper or lower probability to create Fuzzy membership functions, and also creates a hypothetical proposition for corresponding the Fuzzy membership function and the cause. An inference engine matches accident phenomena with the effects when an accident occurs and infers the cause by a modified Fuzzy inference method using the hypothetical proposition.

Automatic trouble analysis apparatus and method thereof

Growing community of inventors

Tokyo, Japan

Yoshihiro Matsumoto