National Institute of Advanced Industrial Science and Technology

Other

Evolvable System Research Institute, Inc.

Sharp Kabushiki Kaisha Corporation

Agency of Industrial Science and Technology

University of Tsukuba

Agency of Industrial Science & Technology, Ministry of International Trade & Industry

Masahiro Murakawa

Tetsuya Higuchi

Yuji Kasai

Eiichi Takahashi

Taro Itatani

Kenji Toda

Hirokazu Nosato

Nobuyuki Otsu

Munehiro Uratani

Kanji Otsuka

Tamotsu Usami

Hidenori Sakanashi

Toshio Adachi

Shogo Kiryu

Yoichi Sato

Shiro Suzuki

Yosuke Iijima

Masahiro Yasuda

Takumi Kobayashi

Yuta Kochi

Atsushi Ikeda

An endoscopic diagnosis support method whereby an examined area and an unexamined area can be clearly discriminated. After a preparatory step of an observation canvas is performed in advance, a frame marking step, a key point calculation step, a preceding and following frame displacement amount calculation step, a preceding and following frame marking step are executed to thereby perform observation recording. In an image diagnosis support step IDS, support is performed such that the existence of a lesion is diagnosed in an organ on the basis of a plurality of position data marked with respect to a plurality of frames in the observation canvas data and an endoscopic image in the plural frames.

Method and system for endoscopic diagnosis support

A region segmented image data creating system for histopathological images is provided. The region segmented image data creating system is capable of creating region segmented image data required to generating a region segmented image. A first bi-level image data creating sectioncreates first bi-level image data, in which nucleus regions can be discriminated from other regions, from histopathological image data. A second bi-level image data creating sectioncreates second bi-level image data, in which a background regions can be discriminated from other regions, from the histopathological image data. A three-level image data creating sectionclarifies cytoplasm regions by computing a negative logical addition of the first bi-level image data and the second bi-level image data, and to create three-level image data as the region segmented image data.

Region segmented image data creating system and feature extracting system for histopathological images

Disclosed is a spectrum spread communication system which is hardly influenced by noises, and in which a frame structure can be identified at a receiving side without use of a frame synchronization signal. A spread code generator switches spread codes ('Scai' and 'Scbi') in each frame, and outputs it to a spread modulation unit. The spread modulation unit performs spread modulation of transmission data, and transmits it to a direct current power line. A reference code generator generates reference codes (&#x201c;Scai&#x201d; and &#x201c;Scbi&#x201d;) in the same code phase. Spread demodulation units performs spread demodulation of the received signal with use of the reference codes (&#x201c;Scai&#x201d; and &#x201c;Scbi&#x201d;), and output it to a selection unit. A frame synchronization detection unit identifies a frame structure on the basis of switching of a synchronization state of a code phase in a code phase synchronization detection unit. The selection unit outputs reception data by selecting spread demodulated data from the spread demodulation unit which is in a phase-synchronized state.

Spectrum spread communication system

A master node () sends an identification signal for designating a communication channel in an identification signal time slot. When the own node matches the node in which the communication channel designated by the identification signal sent from the master node () is set in the identification signal time slot, the master node () and slave nodes (to) each perform data transmission via the communication channel, based on the set contents of the communication channel, in the data transmission time slot corresponding to the identification signal time slot in which the identification signal has been sent.

Serial bus transmission system

A network system by the present invention can quickly detect viruses and does not easily become a new cause of vulnerability. A packet data comparator branches inputted packet data into three branches, and includes an additional pattern matching unit which compares the branched data with the stored data and performs matching with collation patterns stored in a rewritable storage area, a fixed pattern matching unit which compares the branched data with the stored data and performs the matching with a logical operation configured with known collation patterns, a notification packet matching unit which compares the branched data with the stored data and finds a notification packet, and an identity detection aggregation unit which aggregates results from the respective matching units. Moreover, a virus filter, a virus checker, and a secure network system are realized by using the present invention.

Packet data comparator as well as virus filter, virus checker and network system using the same

A serial-parallel converter/encoder unitinputs a transmission symbol data at a transmission symbol rate that is one-Nth of a base-point symbol rate. A precoder/collatorcreates a transmission symbol waveform at the base-point symbol rate. The transmission symbol waveform becomes a transmission signal after passing through a roll-off filterwith a band corresponding to the base-point symbol rate and a modulator. A reception signal demodulated by a demodulatoris input to a fractionally-spaced equalizerthat operates at the base-point symbol rate and is forcibly equalized at the transmission symbol rate by using a reference signal. A level of a signal output from the fractionally-spaced equalizerat the transmission symbol rate is determined by a level determining unitand becomes a reception symbol data by a sawtooth-function output unit

Data transmitting method and data transmitting apparatus

A transmitting circuitconverts transmission data to a multilevel analog signal suitable for transmission. The multilevel analog signal is output to a cablevia an amplifier and a hybrid circuit. In the transmitting circuit, a waveform which compensates waveform deterioration at the cableis generated. A reception signal from the cableis input to a mixervia the hybrid circuitand an amplifier. The mixermixes the reception signal and a cancel signal output from a cancel signal generation circuitso as to remove undesired signals. In a receiving circuit, the signal output from the mixeris sampled by use of a plurality of sample-hold circuits, and subjected to analog sum-of-product computation which is performed by a matrix circuit for distortion compensation. Subsequently, the sampled signals are converted to digital signals. The digital signals are collectively subjected to processing such as parallel-serial conversion, whereby reception data and an evaluation signal are obtained. An adjustment control circuitincludes a CPU, and adjusts the respective circuits on the basis of the evaluation signal such that data can be correctly transmitted and received.

Digital data transmitting apparatus

Delay time between an input of data to a circuit block and an output of the data from the data block is measured in accordance with a timing at which the data from the circuit block is acquired by a measurement register and a timing at which the data from the circuit block is acquired by a data latch. An LSI tester sets well voltage adjustment values so that delay time of each circuit block is averaged. From voltages generated by the adjustment voltage generating circuit, a selector selects voltages that are in accordance with the well voltage adjustment values. The voltages selected are applied to a well of a CMOS transistor of each clock timing adjustment circuit. Delay time between timings of inputted clocks is thus adjusted.

Signal timing adjustment device, signal timing adjustment system, signal timing adjustment amount setting program, and storage medium storing the program

A purpose of a high-speed signal transmission system of the present invention is to pass a high-speed digital signal through an outside-chip line exchanging a signal with a high speed LSI chip with a band higher than GHz. The high-speed signal transmission system of the present invention has a configuration of: insertion of a circuit for feeding back received information and adjusting a waveform at a sending side based on genetic algorithm; a device structure for automatically performing pump up and pump down of a transistor carrier; a transmission line of a wiring out of a transistor; and elimination of a common power source of a circuit.

High-speed signal transmission system

A digital system that performs a specified function by performing digital processing according to one or more clock signals is provided with a plurality of delay elements which are respectively inserted in a plurality of clock circuits that supply the clock signals in the digital system and each of which is composed of a circuit element that changes a delay time according to a value indicated by a control signal, and a plurality of holding circuits that hold a plurality of control signals to be given to the plurality of delay elements. In the plurality of holding circuits, a value of the control signals held by these holding circuits is changed by external devices according to a probabilistic search technique so that the digital system operates correctly in relation to operation timing.

Timing adjustment of clock signals in a digital circuit

An optical apparatus has an adjustment apparatusand an optical unitincluding a plurality of optical elements. The adjustment apparatus sequentially provides control signals that, according to a probabilistic search technique, change the parameters of a stipulated plurality of optical elements among the optical elements to become parameters that cause the functions of the optical apparatus to satisfy stipulated specifications. A method of adjusting the optical apparatus includes sequentially providing control signals that, according to a probabilistic search technique, change the parameters of the stipulated plurality of optical elements among the optical elements, and searching for optical values at which the functions of the optical apparatus the stipulated specification.

Optical apparatus, optical apparatus adjustment method, and storage medium recorded with a processing program that executes said adjustment method

A capacitance position sensor includes a pair of opposed tabular electrodes, an LC oscillator circuit having a toroidal core winding and whose oscillating frequency varies with change in capacitance between the pair of electrodes, and an arithmetic processing unit for calculating an absolute value of a distance between the electrodes from the oscillating frequency of the oscillator circuit. A position controller includes a stationary member formed with one electrode of the pair of electrodes of the position sensor, a movable member on which the other electrode of the pair of electrodes is formed, and moving device for moving the movable member relative to the stationary member.

Capacitance position sensor and position controller equipped with the sensor

An optical apparatus has an adjustment apparatus and an optical unit including a plurality of optical elements. The adjustment apparatus sequentially provides control signals that, according to a probabilistic search technique, change the parameters of a stipulated plurality of optical elements among the optical elements to become parameters that cause the functions of the optical apparatus to satisfy stipulated specifications. A method of adjusting the optical apparatus includes sequentially providing control signals that, according to a probabilistic search technique, change the parameters of the stipulated plurality of optical elements among the optical elements, and searching for optical values at which the functions of the optical apparatus the stipulated specification.

A method is provided for adjusting the optical axis of a light transmission path that includes a plurality of optical components. The method uses an apparatus to sequentially adjust the optical axis of one or more of the optical components, using a probabilistic search technique to obtain optimum evaluation value with respect to light transmitted through the light transmission path.

Growing community of inventors

Tsukuba, Japan

Masahiro Murakawa