Abstract: A semiconductor memory device configured to perform a clock synchronous burst read operation includes a plurality of buffer memories having different bank structures, and first and second data latch circuits storing read data read from the plurality of buffer memories. The semiconductor memory device further includes a control circuit that controls a timing of starting counting up addresses and a timing of storing read data in the first data latch circuit at the time of the clock synchronous burst read operation in accordance with the bank structure of the buffer memory as a read operation target.

Abstract: A semiconductor device includes a first input terminal, the first input terminal being supplied with an input signal, an input detection circuit including a delay circuit having a second input terminal and an output terminal, the input detection circuit detecting a shift in the input signal and generating a first pulse signal in response to the shift, the input detection circuit being connected to the first input terminal, and a control circuit for generating control signals, each of the control signals being generated in response to a synchronous operation or an asynchronous operation respectively.

Abstract: A semiconductor device includes a first input terminal, the first input terminal being supplied with an input signal, an input detection circuit including a delay circuit having a second input terminal and an output terminal, the input detection circuit detecting a shift in the input signal and generating a first pulse signal in response to the shift, the input detection circuit being connected to the first input terminal, and a control circuit for generating control signals, each of the control signals being generated in response to a synchronous operation or an asynchronous operation respectively.

Abstract: An agent for preventing or treating portal hypertension comprising a compound represented by the general formula (I): wherein R1 represents a group capable of forming an anion, etc.; X represents a bond or a spacer; n is an integer of 1 or 2; ring A is benzene ring which may be further substituted; R2 represents a group capable of forming an anion, etc.; and R3 represents a hydrocarbon group which may bonded via a hetero atom, and may be substituted, a salt thereof or a prodrug thereof, is provided. This agent has sufficiently excellent properties as medicine, since it has excellent prophylactic and therapeutic effects on portal hypertension without any side effect, etc.

Abstract: An optical module includes an under cladding, a first core, a second core, and an over cladding. The under cladding has a flat shape as a whole. The first core has a quadrangular cross section and is placed on the under cladding. The second core is placed on a terminal end portion of the first core. The over cladding is placed in a region including the terminal end portion of the first core and the second core placed on the terminal end portion of the first core. The under cladding and the first core placed thereon constitute a first optical waveguide. The under cladding, the terminal end portion of the first core placed on the under cladding, the second core placed thereon, and the over cladding placed on and around the second core constitute a mode field size conversion portion. The under cladding, the second core placed on the under cladding, and the over cladding placed on and around the second core constitute a second optical waveguide. The first core is made of silicon.

Abstract: A surface-mountable glass-sealed light-emitting diode is provided. It has high reliability and high external quantum efficiency, and can achieve a low-cost components-implemented board. An LED bare chip (1) has opposite surfaces, which are provided with electrodes (2) for supplying power from external. A pair of dumet wires (3) are separately connected to the respective electrodes (2) sandwiching the LED bare chip (1) therebetween. The LED bare chip (1), the electrodes (2) and parts of the dumet wires (3) are integrally glass-sealed (4). A pair of metallic disc plates (6) have holes (5) formed through the center. They are secured on both sides of the glass seal (4) and solder-plated, allowing the pair of dumet wires (3) projected from the glass seal to pass through the holes (5).

Abstract: A surface-mountable glass-sealed light-emitting diode is provided. It has high reliability and high external quantum efficiency, and can achieve a low-cost components-implemented board. An LED bare chip (1) has opposite surfaces, which are provided with electrodes (2) for supplying power from external. A pair of dumet wires (3) are separately connected to the respective electrodes (2) sandwiching the LED bare chip (1) therebetween. The LED bare chip (1), the electrodes (2) and parts of the dumet wires (3) are integrally glass-sealed (4). A pair of metallic disc plates (6) have holes (5) formed through the center. They are secured on both sides of the glass seal (4) and solder-plated, allowing the pair of dumet wires (3) projected from the glass seal to pass through the holes (5).

Abstract: A signal under measurement is transformed into a complex analytic signal using a Hilbert transformer and an instantaneous phase of this analytic signal is estimated. A linear phase is subtracted from the instantaneous phase to obtain a phase noise waveform. The phase noise waveform is sampled in the proximity of a zero crossing point of a real part of the analytic signal. A differential waveform of the sample phase noise waveform is calculated to obtain a differential phase noise waveform. An RMS jitter is obtained from the phase noise waveform, and a peak-to-peak jitter is obtained from the phase noise waveform.

Abstract: A signal under measurement is transformed into a complex analytic signal using Hilbert transformation to estimate an instantaneous phase of the signal under measurement from the complex analytic signal. A least mean square line of the instantaneous phase is calculated to obtain a linear instantaneous phase of the signal under measurement, and a zero-crossing timing of the signal under measurement is estimated using an interpolation method. Then a difference between the instantaneous phase and the linear instantaneous phase at the zero-crossing timing is calculated to estimate a timing jitter sequence. A jitter of the signal under measurement is obtained from the jitter sequence.

Abstract: An agent for preventing or treating portal hypertension comprising a compound represented by the general formula (I): 1

Abstract: An optical module includes an under cladding, a first core, a second core, and an over cladding. The under cladding has a flat shape as a whole. The first core has a quadrangular cross section and is placed on the under cladding. The second core is placed on a terminal end portion of the first core. The over cladding is placed in a region including the terminal end portion of the first core and the second core placed on the terminal end portion of the first core. The under cladding and the first core placed thereon constitute a first optical waveguide. The under cladding, the terminal end portion of the first core placed on the under cladding, the second core placed thereon, and the over cladding placed on and around the second core constitute a mode field size conversion portion. The under cladding, the second core placed on the under cladding, and the over cladding placed on and around the second core constitute a second optical waveguide. The first core is made of silicon.

Abstract: A clock waveform XC(t) is transformed into a complex analytic signal using a Hilbert transformer and an instantaneous phase of this analytic signal is estimated. A linear phase is subtracted from the instantaneous phase to obtain a varying term &Dgr;&phgr;(t). A difference between the maximum value and the minimum value of the varying term &Dgr;&phgr;(t) is obtained as a peak-to-peak jitter, and a root-mean-square of the varying term &Dgr;&phgr;(t) is calculated to obtain an RMS jitter.

Abstract: It is an object of the present invention to provide a novel disease-associated gene and use of the protein thereof, etc. Specifically, the invention provides: (1) a screening method and a screening kit using the protein and a salt thereof; (2) a compound or a salt thereof controlling an activity of the protein, obtained by the screening method and the screening kit; (3) a neutralizing antibody regulating the activity of the protein; and (4) a medicine such as a preventive and a remedy for a heart disease.

Abstract: The present invention relates to a method of screening a drug by using a disease-associated gene product, an antibody to the disease-associated gene product, an antisense DNA that suppresses the expression of the disease-associated gene, etc.

Abstract: A signal under measurement is transformed into a complex analytic signal using Hilbert transformation to estimate an instantaneous phase of the signal under measurement from the complex analytic signal. A zero-crossing timing sequence of the signal under measurement is estimated using the instantaneous phase. An instantaneous period sequence of the signal under measurement is estimated from the zero-crossing timing sequence to obtain a jitter of the signal under measurement from the instantaneous period sequence.

Abstract: A signal to be measured is waveform-formatted to a square waveform that retains the frequency, duty ratio and jitter component of the original signal, and the leading (or trailing) edge of the waveform-formatted output is sampled by a sampling clock of a frequency slightly different from 1/N of the frequency fM of the signal to be measured. The samples are converted by an A/D converter to digital data Vn(t), which is stored in a memory. The difference between the stored digital data Vn(t) and the rise-up characteristic line V′(t) is calculated to detect jitter J′n(t).

Abstract: A tandem-type image forming apparatus forms a color image by transferring images formed by a plurality of image forming units set along a transfer belt onto a recording sheet transported by the transfer belt. The tandem-type image forming apparatus includes a plurality of detecting units, each detecting a toner image formed by a corresponding image forming unit to obtain the amount of toner in the toner image, a standard pattern formation controlling unit for controlling one of the image forming units to form a standard pattern to be detected by the detecting units, a sensitivity obtaining unit for obtaining a value as an evaluation value that is outputted by each of the detecting units on detecting the standard pattern, and an detection output adjusting unit for adjusting a value outputted by the detecting unit in accordance with the evaluation value.

Abstract: A signal to be measured is waveform-formatted to a square waveform that retains the frequency, duty ratio and jitter component of the original signal, and the leading (or trailing) edge of the waveform-formatted output is sampled by a sampling clock of a frequency slightly different from 1/N of the frequency fM of the signal to be measured. The samples are converted by an A/D converter to digital data Vn(t), which is stored in a memory. The difference between the stored digital data Vn(t) and the rise-up characteristic line V′(t) is calculated to detect jitter J′n(t).

Abstract: The object of the present invention is to reduce the burden with regard to cleaning of the test toner pattern formed during AIDC in an electrophotographic image forming apparatus. In order to attain said object, the present invention is an electrophotographic copying machine that transfers a toner image formed on a photoreceptor drum onto a sheet of paper conveyed on a conveyor belt, wherein where the toner density of the test toner pattern formed on the photoreceptor drum under prescribed image formation parameters is optically detected by a sensor, the transfer charger output is set to be lower than it is in image formation mode, and a portion of the test toner pattern is transferred onto the conveyor belt and then wiped off by a cleaner.

Abstract: Compounds having antagonistic activity on endothelin receptors can be effectively used for prophylaxis and/or treatment of hypofunction of organs which occurs in their surgery or transplant.