131results about How to "Keep time short" patented technology

A teleconferencing system includes: a camera system for imaging a plurality of persons; a voice collector for capturing voices generated by a plurality of persons; and a transmitter for multiplexing an image signal acquired from the camera system and a voice signal acquired from the voice collector and transmitting a multiplexed signal via a communication line. The camera system includes: a camera; a driver for changing the viewing direction of the camera; and a camera controller for controlling the driver. The camera controller includes: a face position detection unit; a registration unit; a timing unit; a drive control unit; and a hold time control unit.

A ceramic anode structure obtainable by a process comprising the steps of: (a) providing a slurry by dispersing a powder of an electronically conductive phase and by adding a binder to the dispersion, in which said powder is selected from the group consisting of niobium-doped strontium titanate, vanadium-doped strontium titanate, tantalum-doped strontium titanate, and mixtures thereof, (b) sintering the slurry of step (a), (c) providing a precursor solution of ceria, said solution containing a solvent and a surfactant, (d) impregnating the resulting sintered structure of step (b) with the precursor solution of step (c), (e) subjecting the resulting structure of step (d) to calcination, and (f) conducting steps (d)-(e) at least once.

A method for activating at least one headlight of a vehicle has: a step of ascertaining a traffic density from an item of information about road users in the surroundings of the vehicle; a step of determining a control parameter for controlling an emission characteristic of the headlight using the ascertained traffic density; and a step of providing the control command for controlling an emission characteristic of the headlight using the control parameter.

An improved cutting tool insert and a method for the preparation of such cutting tool insert, having a sintered alumina and silicon carbide whisker composite material body, comprising the steps of milling and mixing the powdered starting materials of said composite material and forming said material into a preformed workpiece, heating up said workpiece at a heating rate of from about 20 to about 60° C. per minute to a sintering temperature of between from about 1600 to about 2300° C., and holding at said sintering temperature for a holding time of from about 5 to about 60 minutes at a pressure of between from about 20 to about 100 MPa.

The invention discloses a sample-and-hold amplifier which comprises a primary sample-and-hold circuit and a secondary sample-and-hold circuit. The input positive terminal and the input negative terminal of the primary sample-and-hold circuit receive an external signal, the output positive terminal and the output negative terminal of the primary sample-and-hold circuit are coupled to the input positive terminal and the input negative terminal of the secondary sample-and-hold circuit, the primary sample-and-hold circuit is provided with a primary operational amplifier with the amplification being less than a multiple, and the secondary sample-and-hold circuit is provided with a secondary operational amplifier which realizes the amplification more than the multiple; after the external signal is sampled, held and amplified, by the primary sample-and-hold circuit and the secondary sample-and-hold circuit, the external signal is output from the output positive terminal and the output negative terminal of the secondary sample-and-hold circuit. Meanwhile, the invention discloses a sample-and-hold method. The sample-and-hold amplifier, as a basic signal processing module, is used for front end processing of the external input signal; and the sample-and-hold amplifier ensures the speed and the precision of the signal conversion with the simple structure on the premise of realizing high reliability.

An object is to provide a semiconductor memory device which can be miniaturized and also secures a sufficient margin for the refresh period. A memory cell includes a reading transistor, a writing transistor, and a capacitor. In the above structure, the capacitor controls a potential applied to a gate of the reading transistor. The writing transistor controls writing and erasing of data and, when the transistor is off, has small current so that loss of electric charges stored in the capacitor, which is due to leakage current of the writing transistor, can be prevented. A semiconductor layer included in the writing transistor is provided so as to extend from the gate electrode toward a source region of the reading transistor. The capacitor is provided to overlap with the gate electrode of the reading transistor.

A cermet anode structure obtainable by a process comprising the steps of: (a) providing a slurry by dispersing a powder of an electronically conductive phase and by adding a binder to the dispersion, in which said electronically conductive phase comprises a FeCrMx alloy, wherein Mx is selected from the group consisting of Ni, Ti, Nb, Ce, Mn, Mo, W, Co, La, Y, Al, and mixtures thereof, (b) forming a metallic support of said slurry of the electronically conductive phase, (c) providing a precursor solution of ceria, said solution containing a solvent and a surfactant, (d) impregnating the structure of step (b) with the precursor solution of step (c), (e) subjecting the resulting structure of step (d) to calcination, and (f) conducting steps (d)-(e) at least once.

According to an aspect, there is provided an apparatus for measuring the blood pressure, BP, of a user, the apparatus comprising a volume-clamp BP monitoring device that comprises a first pressure device for applying pressure to a first part of the body of the user, a first photoplethysmogram, PPG, sensor for obtaining a first PPG signal from the first part of the body of the user, and a control unit that is configured to analyse the first PPG signal and to control the pressure of the first pressure device; wherein the control unit is configured to adjust the pressure of the first pressure device to maintain the first PPG signal at a constant level and to determine the BP of the user from the pressure of the first pressure device; and a second sensor, separate from the first PPG sensor, for measuring a physiological characteristic of the user in a second part of the body of the user, wherein the second part of the body is separate from the first part of the body; wherein the apparatus is configured to analyse the measured physiological characteristic to determine a measure of the blood perfusion in the second part of the body of the user, and to determine whether to perform a recalibration of the volume-clamp BP monitoring device on the basis of changes in the blood perfusion.

The invention concerns a sintered ceramic component of silicon nitride or sialon suitable as rolling element in a bearing and a manufacturing method for making such ceramic components. The ceramic component has high density and a homogeneous and fine microstructure, giving the component excellent mechanical properties. Manufacturing of the sintered ceramic component by SPS is cost-effective and rapid.

The invention discloses a sampling holder, which comprises a first-level sampling hold circuit and a second-level sampling hold circuit, wherein input positive and negative terminals of the first-level sampling hold circuit are connected with external signals; output positive and negative terminals of the first-level sampling hold circuit are coupled to input positive and negative terminals of the second-level sampling hold circuit; the first-level sampling hold circuit is provided with a first-level operational amplifier which realizes amplification below one multiple; the second-level sampling hold circuit is provided with a second-level operational amplifier which realizes amplification above one multiple; the external signals are sampled, held and amplified by the coordination of the first-level and second-level sampling hold circuits, and are output from output positive and negative terminals of the second-level sampling hold circuit. The invention also discloses a sampling hold method. Serving as a single processing basic module, the sampling holder is used for performing front-end processing on external input signals, and ensures the speed and precision of signal conversion by using a simple structure on the premise of realizing high reliability.

The invention discloses a high-speed complementary type dual-power operational amplifier, which comprises a differential input end, a push-pull inverting amplification circuit and a cascode amplification circuit. The differential input end is connected with the differential input end of the push-pull inverting amplification circuit; and the output end of the push-pull inverting amplification circuit is connected with the signal input end of the cascode amplification circuit. According to the invention, a two-stage operational amplifier with differential input and differential output is adopted. The operational amplifier comprises a push-pull inverting amplification circuit and a cascode amplification circuit, a differential signal sequentially passes through the push-pull inverting amplification circuit and the cascode amplification circuit, so that the operational amplifier can improve the swing amplitude of an output signal, and has the beneficial effects of high speed, larger bandwidth, shorter establishment time and shorter retention time.

The present invention relates to a microfluidic chip apparatus for multi-channel simultaneous detection of six typical tumor markers, and belongs to the field of analytical testing. According to the present invention, the use of inexpensive and easily-processed polydimethylsiloxane (PDMS) to produce the substrate of a microfluidic chip for multi-channel simultaneous detection of six typical tumor markers has a series of problems that the surface of the PDMS is strongly hydrophobic and the surface chemical modification effect is difficult to last. The technical scheme of the present invention is that the substrate material is PDMS with an original ecological surface, the pipeline of the chip is filled with doped micron-scale titanium dioxide particles, the surface super-hydrophilicity of the titanium dioxide particles can be induced by visible light irradiation in advance, and the set of the titanium dioxide particle filler and the super-hydrophilic gap between the particles can compensate and beyond the original strong hydrophobic pipeline, such that the constant and super hydrophilic modification effect is achieved. In addition, the titanium dioxide filler can further be used for preventing the pipeline of the chip from collapsing and deforming, and blocking biological macromolecules from contacting the inner wall of the pipeline.

The present invention relates to a subtype swine influenza detection chip apparatus with a strongly-hydrophobic PDMS substrate, and belongs to the field of analysis and testing. According to the present invention, the use of inexpensive and easily-processed polydimethylsiloxane (PDMS) to produce the substrate of a microfluidic chip for diagnosing subtype swine influenza has a plurality of barriers; and the subtype swine influenza detection chip apparatus is characterized in that the substrate selects the PDMS having an original ecological surface, a hinge type fixture provided with a miniatureultrasonic wave transducer is manually fastened and positioned at the position close to the sample liquid flow terminal of the microfluidic chip, ultrasonic waves induce the sample liquid flow to flow from the sample injection end of the chip to the terminal direction along the pipeline of the chip, the pipeline of the chip is filled with a micro-scale silica particle filler, and the micro-scalesilica particle filler is used for supporting the inner wall of the pipeline, compensating the original hydrophobic pipeline with the set of hydrophilic micro-flow channels, and extruding and coveringthe inner wall surface of the pipeline so as to reduce the opportunity of the contact between biological macromolecules and the inner wall surface.

The invention relates to a multi-channel microfluidic chip device for AIDS diagnosis comprising a hydrophobic substrate, which belongs to the field of analysis and testing. There are technical obstacles in making the substrate of the microfluidic chip for AIDS diagnosis with cheap and easy-to-process polydimethylsiloxane (PDMS). The gist of this case is that the substrate is selected from PDMS with an original ecological surface, and the hinged fixture with a micro-ultrasonic transducer is manually fastened and positioned at the position adjacent to the sample liquid flow terminal of the microfluidic chip, so as to The ultrasonic wave induces the sample liquid flow to flow from the sample injection end of the chip along the pipe of the chip to the terminal. The pipe of the chip is filled with micron-sized silicon dioxide particle fillers. The function of the filler includes supporting the inner wall of the pipe, And, a collection of hydrophilic micro-channels is used to compensate the originally hydrophobic channels, and the inner wall of the channel is squeezed and covered to reduce the chance of biomacromolecules in contact with the inner wall.

The present invention relates to an acquired immunodeficiency syndrome diagnosis apparatus having an easily-detachable member and used for liquid flow drive, and belongs to the field of analysis and testing. In the prior art, the application of the inexpensive and highly-processable polydimethylsiloxane (PDMS) to produce the substrate of the acquired immunodeficiency syndrome diagnosis microfluidic chip has a series of problems. The technical scheme of the present invention is that PDMS having an ecosystem surface is selected as a substrate, an elastic force clamper additionally provided with a miniature ultrasonic wave transducer on the clamping arm is engaged and positioned at the position close to the sample liquid flow terminal end of a microfluidic chip through elastic force, ultrasonic waves induce a sample liquid flow to flow to the terminal end direction from the sample injection end of the chip along the pipeline of the chip, the pipeline of the chip is filled with a micro-scale silica particle filler, and the micro-scale silica particle filler is used for supporting the inner wall of the pipeline, compensating the original hydrophobic pipeline with a hydrophilic micro-channel, and extruding and covering the inner wall surface of the pipeline so as to reduce the opportunity of the contact between biological macromolecules and the inner wall surface.

The invention relates to a low-cost microfluidic device for syphilis diagnosis, which uses interface characteristics to transmit liquid flow, and belongs to the field of analysis and testing. There are some difficulties in using cheap and easy-to-process polydimethylsiloxane (PDMS) to make the substrate of the microfluidic chip for syphilis diagnosis; The interior is filled with doped micron-sized titanium dioxide particles; the titanium dioxide particles are titanium dioxide particles that can induce super-hydrophilic properties on the surface through pre-irradiation of visible light; the titanium dioxide particles fill the super-hydrophilic gaps between the particles Collect, compensate, and surpass the original strong hydrophobic pipeline, thereby achieving a constant and super-hydrophilic modification effect; at the same time, a small power ultrasonic wave induces a difference in interfacial tension at both ends of the chip, which in turn promotes The sample liquid flows along the channel of the chip toward the terminal.

The present invention relates to an inexpensive cholera diagnosis microfluidic apparatus with a tortuous liquid flow transmission route, and belongs to the field of analytical testing. According to the present invention, the use of inexpensive and easily-processed polydimethylsiloxane (PDMS) to produce the substrate of a microfluidic chip for cholera diagnosis has a series of problems that the surface of the PDMS is strongly hydrophobic and the surface chemical modification effect is difficult to last. The technical scheme of the present invention is that the substrate material is PDMS with an original ecological surface, the pipeline of the chip is filled with doped micron-scale titanium dioxide particles, the surface super-hydrophilicity of the titanium dioxide particles can be induced by visible light irradiation in advance, and the set of the titanium dioxide particle filler and the super-hydrophilic gap between the particles can compensate and beyond the original strong hydrophobic pipeline, such that the constant and super hydrophilic modification effect is achieved. In addition, the titanium dioxide filler can further be used for preventing the pipeline of the chip from collapsing and deforming, and blocking biological macromolecules from contacting the inner wall of the pipeline.

The invention relates to a microfluidic chip device of sample liquid flow with forcedly modified transmission pipelines, and belongs to the field of analytical tests. A plurality of difficult problems actually exist in using cheap and easily processed polydimethylsiloxane(PDMS) to prepare a substrate of a microfluidic chip; the PDMS has a spontaneous slow deformation property, which causes gradual narrowing of a chip pipeline; a PDMS surface is strongly hydrophobic, so that surface chemical modification effects are difficult to sustain; and the surface adsorbs and swallows biomacromolecules. A key point of the scheme is that a substrate material is PDMS with an original ecological surface and the chip pipeline is filled with micron-sized silica particles, and the functions of the micron-sized silica particle fillers comprise supporting pipeline inner walls, substituting and compensating original hydrophobic pipelines by a hydrophilic microfluidic channel collection, and reducing the contact chances between the biomacromolecules and inner wall faces by rigidly squeezing and covering up the inner wall faces.