1034results about How to "Stable signal" patented technology

An optical fiber radio transmission system is provided which is capable of considerably improving the received dynamic range of radio signals and, in addition, is capable of optically transmitting radio signals while preventing the deterioration of transmission performance and the loss of linearity of an input signal more easily. A received level detection section 111 detects which one of predetermined levels, i.e., Level I, Level II, and Level III, the received level of a radio signal received by an antenna 400 falls under. A signal control section 112 performs an amplification / attenuation process on the radio signal in accordance with the detected level. A control information sending section 113 superimposes control information indicating the detected level on a primary signal obtained after the amplification / attenuation process. This signal is converted to an optical signal and transmitted. An optical to electrical conversion section 211 converts the optical signal received from a transmitting unit to an electrical signal. A control information extraction section 212 extracts the level from the control information, which has been superimposed on the primary signal. A signal control section 213 performs an amplification / attenuation process on the primary signal in accordance with the extracted level.

A device for generating a binaural signal based on a multi-channel signal representing a plurality of channels and intended for reproduction by a speaker configuration having a virtual sound source position associated to each channel, is described. It includes a correlation reducer for differently processing, and thereby reducing a correlation between, at least one of a left and a right channel of the plurality of channels, a front and a rear channel of the plurality of channels, and a center and a non-center channel of the plurality of channels, in order to obtain an inter-similarity reduced set of channels; a plurality of directional filters, a first mixer for mixing outputs of the directional filters modeling the acoustic transmission to the first ear canal of the listener, and a second mixer for mixing outputs of the directional filters modeling the acoustic transmission to the second ear canal of the listener. According to another aspect, a center level reduction for forming the downmix for a room processor is performed. According to even another aspect, an inter-similarity decreasing set of head-related transfer functions is formed.

The invention discloses a shift register and a drive method thereof, a gate drive circuit and a display device. By means of input signal control of various input terminals and matching of various transistors, shifting of valid signals input after the input terminals are operated is implemented, and the normal scanning of the gate drive circuit is guaranteed. According to the shift register, signals of a first node and second node control a first transistor and a second transistor correspondingly and respectively, only one of the first transistor and second transistor is conducted from a first time interval to a fifth time interval, and the suspension state of the input terminals is avoided; the arrangement of a fifth transistor is equivalent to a diode, the effect on the second node by coupling of a fourth capacitor is avoided, the effect on the second node by leakage current flowing to a fifth node is avoided, and the stability of the signals of the input terminals is guaranteed. In addition, the shift register is simple in structure, the territory area occupied by the shift register is reduced, and the optimization of the narrow border of the display device is benefited.

A radio frequency (RF) identification tag including a substrate, a planar antenna, an RF chip, a plurality of signal conductors and a plurality of ground conductors is provided. The RF chip receives an RF signal from the planar antenna to generate an identification code. The signal conductors are coupled to the planar antenna. The ground conductors, interlaced on two opposite sides of the signal conductors, and the signal conductors are adjacent to each other and disposed on the substrate to form a coplanar waveguide structure which includes an impedance match portion and a transmission portion. The impedance match portion has an input end coupled to the signal conductors and a ground plane coupled to the ground conductors. The RF chip is disposed between the input end and the ground plane. The transmission portion is connected between the impedance match portion and the planar antenna.

Electrode systems have been developed for use in perfusion systems to measure the electrical activity of an explanted heart and to provide defibrillation energy as necessary. The perfusion systems maintain the heart in a beating state at, or near, normal physiological conditions; circulating oxygenated, nutrient enriched perfusion fluid to the heart at or near physiological temperature, pressure and flow rate. These systems include a pair of electrodes that are placed epicardially on the right atrium and left ventricle of the explanted heart, as well as an electrode placed in the aortic blood path.

A scan driving device includes shift registers, each including a first signal terminal to which a forward direction driving start signal is transferred, a second signal terminal to which a backward direction driving start signal is transferred, a clock signal terminal and a clock bar signal terminal to which a clock signal and a clock bar signal are applied, a sustain signal terminal to which a sustain signal is transferred, a control signal terminal to which a control signal is transferred, a gate clock signal terminal to which a gate clock signal is transferred, and an output signal terminal, where driving power source voltages including a high potential power source voltage and low potential power source voltages is applied to each shift register, and an application of the low potential power source voltages to each shift register is controlled based on the sustain signal.

An aircraft skin mirror milling method and an aircraft skin mirror milling device. The device is characterized by mainly comprising a machine tool main framework, a milling apparatus, a vertical-horizontal conversion apparatus, a lug piece holding apparatus, a flexible adsorption apparatus, a top-shore apparatus, a detection apparatus and a thickness measuring apparatus. In the device, an aircraft skin is vertically clamped by the vertical-horizontal conversion apparatus for increasing the clamping efficiency of the aircraft skin and a positioning precision of the aircraft skin is further improved with combination of a vacuum adsorption apparatus so that deformation caused by gravity can be avoided. On the basis of on-line detection by a laser displacement sensor, actual curve surface of the aircraft skin can be detected before processing and aircraft skin processing tool path can be adjusted according to an actual clamping situation for achieving self-adapting numerically-control processing. The top-shore apparatus can support the aircraft skin from backside during a milling process of the aircraft skin, thereby avoiding vibration during processing and improving stability of processing. On-line monitoring of the thickness can be achieved during the processing and thickness compensation can be provided. By means of an integrated control system, cooperative operation of units in the machine tool can be ensured and interference can be avoided.

An apparatus for measuring bioelectrical signals is provided. The apparatus includes a sensor electrode, a sensor support, and a main body. The sensor electrode has a tapering portion that narrows toward one end and a protruding portion that extends from the one end of the tapering portion, contacts a body part, and senses bioelectrical signals. The sensor support maintains the contact between the sensor electrode and the body part. The main body is connected to the sensor support and is wearable on a living body.

An image sensor and a method of manufacturing the same are disclosed. An image sensor is formed by forming a photoelectric transformation element at a front surface of a semiconductor substrate in an active pixel sensor region and in an optical black region of the semiconductor substrate, subjecting a surface of the semiconductor substrate opposite the front surface to a removal process to create a back surface of the semiconductor substrate, and forming a light blocking film pattern on the back surface in the optical black region. The light blocking film pattern includes an organic material.

An amplifier circuit includes first and second amplification units. A first detection electrode and a high impedance circuit are connected to the input terminal of the first amplification unit. A second detection electrode and a high impedance circuit are connected to the input terminal of the second amplification unit. The output terminals of the first and second amplification units output first and second output signals, and are connected to the input terminals of a differential amplifier circuit through coupling capacitors, respectively. The differential amplifier circuit operates a difference between the first and second output signals in a state where a direct-current component is omitted.

A CTCS2-class train control system based on wireless locomotive signals is a pint-to-point system for transmitting the train control information via passive responder, regional rail circuit and wireless channel. It is composed of the locomotive carried equipment consisting of ATP device and wireless signaling device, and the ground equipment consisting of wireless signaling device, responder, rail circuit ZPW2000, interface for computer or electric centralizing linkage 6502, and interface for train scheduling and command system or scheduling centralizing system (TDCS or CTC).

The invention relates to the field of display technology, and particularly relates to a shift register unit and a driving method, a gate driving circuit as well as a display device thereof. Through arranging a voltage stabilizing capacitor which is connected with a pull-up node, the shift register unit provided by the embodiment of the invention stabilizes an electric potential at the pull-up node by using the voltage stabilizing capacitor, so that signals output by the shift register unit are more stable. Meanwhile, the shift register unit is composed of a small amount of transistors and capacitors, so that the wiring area of the gate driving circuit is greatly reduced, and a technical support is provided for designing a liquid crystal display device with a narrower border; in addition, the structure of the gate driving circuit is simplified, so that the manufacturing technology of the gate driving circuit is simplified, and the manufacturing cost is reduced. Furthermore, the shift register unit provided by the invention also fast and effectively pulls down the output signals to be a low electric potential through two pull-down processes; and the pull-down capacity of the gate driving circuit is strengthened.

A pattern is projected onto a screen by a projector using an illumination having a non-visible wavelength. A camera, displaced several inches from the projector, observes the projected pattern whose signals are then stored to create a reference frame. The pattern is then projected onto the screen a second time with a presenter present. The camera observes the projected pattern whose signals are then stored to create a current frame, including the presenter, and signals obtained from the reference frame are compared to determine their difference. In unobscured screen areas, the pattern images match. The pattern on the presenter is displaced because of the displaced camera, and no longer matches the reference pattern, thereby identifying the presenter's silhouette area.

An organic light-emitting display apparatus basically comprises a thin film transistor, an organic light-emitting device and a pad electrode, and provides an improved adhesive force between a pad portion and an electrode and a stable signal supply. A method of manufacturing the organic light-emitting display apparatus comprises mask processes for forming on a curve layer of a thin film transistor, a pixel electrode and a first pad electrode, a gate electrode and a second pad electrode, contact holes and an interlayer insulating layer, source and drain electrodes and a third pad electrode, and a pixel define layer.

Disclosed herein are a capacitive type touch detection means and a detection method using a new scheme, which detects a touch signal using a difference between voltage magnitudes detected by a touch detector according to whether a touch is generated, when an alternating voltage is applied to a line equivalent capacitor formed between a sensing pad which is detecting a touch signal and a non-sensing pad adjacent to the sensing pad. The touch detection means includes: a sensing pad configured to generate the touch capacitance Ct between a sensing pad and the touch input means; an alternating voltage configured to be applied to a line equivalent capacitor Ceq formed between the sensing pad and a non-sensing pad adjacent to the sensing pad; and a touch detector connected to the sensing pad to detect a difference in voltage generated according to whether the touch is generated by the touch input means.

The invention relates to a novel optical fiber temperature and pressure sensor, which comprises an elastic diaphragm, an optical fiber Bragg grating and a demodulator connected with the optical fiber Bragg grating, wherein a short connecting pipe is sleeved on a raised column of the elastic diaphragm; the other end of the short connecting pipe is fixedly provided with a hollow rod; the hollow rod and the end face of a first optical fiber in the center thereof form a first reflecting surface through polishing; a reflecting film is plated on the first reflecting surface; the other end of an outer protection tube is inserted into a long connecting pipe with a second ceramic ferrule component; the bending part of a second optical fiber is provided with the optical fiber Bragg grating; a second ceramic rod and the end face of the second optical fiber in the center thereof form a second reflecting surface through polishing; and the first reflecting surface of the hollow rod and the second reflecting surface of the second ceramic ferrule component are centered and are provided with a space therebetween to form a Fabry-Perot cavity. The optical fiber temperature and pressure sensor is used for manufacturing optical fiber sensors.

The invention discloses a shift register, a driving method thereof, a driving control circuit, a display panel and a display device. Through arranging a third control module, stable signal of a firstnode is kept through controlling by the signal of the first node. In floating connection of the first node, the signal at a third clock signal end is coupled with the first node. When a signal outputend outputs an effective pulse signal, the signal of the first node is not affected by the signal at the third clock signal end, and influence of a second control module to the signal of a third nodeis prevented. Furthermore through arranging a transmission control module, the level of the signal of a second node is same with the level of the signal of the third node through controlling by the signal of a second node. The signal can be directly and quickly transmitted to the third node, thereby preventing a risk of signal transmission competition, and further preventing an output competitionrelation of the shift register so that the shift register can stably outputs the signal in a shifted manner.

The invention discloses a monitoring method and an optimal control method for supercritical circulating fluidized bed (CFB) boiler combustion signals. The monitoring method comprises the following steps of: step 1, acquiring and pre-processing field data, and determining an auxiliary variable of an instant combustion carbon quantity model; step 2, building the instant combustion carbon quantity model based on mechanism modeling and data analysis hybrid modeling, and estimating the storage amount of instant combustion carbon in a hearth through a generalized Kalman filter information fusion technology, wherein the instant combustion carbon quantity model is shown in the description; and step 3, building a dynamic heat signal model, a hearth bed temperature signal model and a hearth outlet oxygen signal model through the instant combustion carbon quantity, and predetermining heat, bed temperatures and oxygen. The methods provided by the invention can accurately measure signals of heat, bed temperatures, oxygen and the like of a supercritical CFB boiler in real time, so that the optimal control on supercritical CFB boiler combustion is realized, and the combustion stability of the supercritical CFB boiler is improved.

Automotive vehicle including a radar transceiver each including a heterodyne active IMPATT multiplier module arranged to receive a signal from a VCO, a first balance mixer arranged to receive a signal from a VCO, a second balance mixer arranged to receive a signal from a receive antenna and the IMPATT multiplier module and derive a first intermediate frequency signal, a first amplifier for amplifying the output of the second balance mixer and providing the amplifier output to the first balance mixer, and a second amplifier for amplifying the output of the first balance mixer. The vehicle also includes a processor which receives output from the second amplifier of each transceiver and generates a control signal for controlling one or more vehicular components based on the output from the second amplifier(s). The components can be part of a collision avoidance system, blind spot monitoring system and the like.

The invention discloses a piezoelectric sensor. The piezoelectric sensor comprises an induction component, wherein the induction component comprises a piezoelectric material and a pair of electrodes positioned on the upper surface and the lower surface of the piezoelectric material; an encapsulated shell is wrapped outside the induction component; the pair of electrodes on the piezoelectric material are connected with each other through a screened lead running through the encapsulated shell; and the encapsulated shell is prepared by mixing epoxy resin, a curing agent and cement according to the mass ratio of the epoxy resin to the curing agent to the cement of 1:0.4:1. The invention also discloses a preparation method of the piezoelectric sensor, a beam type concrete sensor comprising the piezoelectric sensor and application thereof. The piezoelectric sensor is stable in signal, high in signal to noise ratio, small in road surface damage degree, high in durability, simple in preparation process and low in cost. The beam type concrete sensor is simple in preparation, adjustable in volume, high in sensitivity, high in response speed, insusceptible to damage during construction; and the calculated running speed of a vehicle is basically consistent with the actual running speed of the vehicle, the measuring result is accurate and the error is small.

A home appliance system and an operation method thereof are disclosed. The home appliance outputs product information as a predetermined sound and transmits the sound through a connected communication network, thereby making it easier for a service center at a remote place to check a status of the home appliance. Further, the home appliance system and operation method thereof prevents noise or signal error generated in the procedure of converting product information into a signal of a predetermined frequency band in order to output the product information as a sound, thus enabling stable signal conversion and improving the accuracy of information transmission using the output of sound.

A delta-sigma modulator and delta-sigma modulation method according to the present invention are capable of ensuring a stable 1-bit signal having less distortion at the transition time from an audio signal reproduction state to soundless state while maintaining high sound quality during reproduction of an audio signal representing music or the like, and, at the same time, capable of maintaining high sound quality at the transition time from a soundless state to audio signal reproduction state. The delta-sigma modulator applies delta-sigma modulation to an input signal to output a 1-bit digital signal, and comprises an integration section that applies integration to the input signal, a quantization section that quantizes the integrated output from the integration section, a random noise generation section that generates a random noise signal whose gain has been adjusted based on the integrated output of the integration section, a detection section that detects a predetermined pattern from the input signal, and a changeover section that switches supply and suspension of supply of the random noise signal from the random noise generation section to the quantization section based on a detection result of the detection section.

A high stability and EMI protective female USB connector is disclosed to include an electrically insulative base member, which holds a set of first metal terminals in a top abutment portion thereof and has two locating blocks at two sides of the top abutment portion, an insulative tongue plate, which holds a set of second metal terminals and has a bottom accommodation space that accommodates the top abutment portion of the insulative base member and two hook blocks disposed at two sides and respectively hooked up with the locating blocks of the insulative base member, an insulative terminal holder block fastened to the rear side of the insulative base member to hold the rear bonding portions of the first and second metal terminals in an array, and a metal shielding shell surrounding the insulative base member and the insulative tongue plate for grounding to provide excellent EMI protection.

The invention relates to the technical field of biology, and relates to a human X-chromosome composite amplification system composed of 20 short serially-connected repetitive sequences and applications thereof. The composite amplification system comprises 20 pairs of primers and is capable of amplifying 19 STR sites: DXS6795, DXS6803, DXS6807, DXS9907, DXS7423, GATA172D05, DXS101, DXS9902, DXS7133, DXS9810, GATA31E08, DXS6800, DXS981, DXS10162, DXS6809, GATA165B12, DXS10079, DXS10135, and HPRTB, and one sex recognition site: Amelogenin. Five-color fluorescence labeling is adopted by the system, the size of amplification products is in a range of 85 to 450 bp, the operation is simple, and the individual recognition performance is high. The sites provided by the provided composite amplification system are highly compatible to the conventional commonly-used X-STR kits, moreover, sites with high polymorphism information are provided, and the provided composite amplification system can be applied to paternity identification related with X-chromosome, individual recognition, and auxiliary detection of X-chromosome sex-linked hereditary diseases.

The invention discloses a fire automatic alarming system based on LORA wireless communication and a method thereof. The system comprises a master control system, fire detecting equipment, alarm equipment, a firefighting executing device and an LORA wireless communication network. The fire detecting equipment is used for monitoring a fire signal and transmits a fire signal to the master control system. After the master control system receives the fire signal, the master control system transmits an alarm signal to the alarm equipment, and simultaneously the master control system transmits a firefighting control signal to the firefighting executing device. After the alarm equipment receives the alarm signal, the alarm equipment notifies a user of a fire alarm condition in a manner of transmitting a high-strength sound-and-light alarm signal. The firefighting executing device makes field executed firefighting equipment perform fire extinguishing according to the firefighting control signal. According to the fire automatic alarm system and the method thereof, LORA wireless communication technology is utilized, thereby truly realizing an alarming and firefighting linkage function of an existing wired firefighting automatic alarm system, and preventing defects of complicated wiring, many difficulties in manual mounting and complicated maintenance in a wired fire automatic alarm system.

In an atomic oscillator, a high-frequency converting circuit converts the output of a standard oscillator into a high frequency signal such that the frequency of the high frequency signal multiplied by a low natural number equals an atomic resonant frequency signal. The high frequency signal is then multiplied by a low natural number in an active, low-natural-number multiplier circuit to convert the output frequency of the standard oscillator into a resonant frequency to be input to the atomic oscillator. The result is that, without using a passive, high-natural-number multiplier circuit, such as a varactor diode, which is expensive, it is possible to convert the output frequency of the standard oscillator into a resonant frequency signal of a rubidium atom, thus downsizing the circuits of the atomic oscillator and reducing the term and cost of manufacture.

The invention relates to a continuous monitoring method and device for the turbidity of a water body, which are suitable for underwater long-period water quality monitoring. Starting from the aspect of invariable light intensity received by a sensor, by adjusting the distance between a light source and the sensor or the emitted light intensity of the light source, the method can calculate the turbidity of the water body based on a Beer-Lambert law. The device basically comprises the light source, a light intensity sensor, a single chip microcomputer, a slide rod, a light source moving mechanism (or a light intensity sensor moving mechanism), a wireless signal transmitter, a wireless signal receiver and a data processing system. The device can be put into the wild water body for long time to continuously determine the turbidity of the water body; in a determination process, the position of the light source or the sensor, and the intensity of the light source can be adjusted in real time according to the change of the turbidity of the water body; a relation between the turbidity value of the water body and the measuring distance, and a relation between the turbidity value of the water body and the intensity of the light source are utilized to carry out long-time field monitoring on the turbidity of the water body, so as to really reflect an actual change condition of the water body; a monitoring process is accurate and reasonable.

A temperature dependency of an internal clock signal generated by an internal clock generating circuit is effectively reduced. A temperature detecting circuit is provided to a variable clock generator for generating the internal clock signal and an oscillating cycle period of the variable clock generator is altered according to a detection signal of the temperature detecting circuit. A cycle of the internal clock signal is altered and a temperature dependency of the internal clock signal is effectively compensated for.

A portable gas phase chromatograph used for trace amount analysis of organic material in environmental air is composed of carrier gas system, trapping micro pit, capillary column separation system, micron FID detector, signal collection card and micro processing system. It can be used to carry out quantitative and qualitative analysis on nearly a hundred kinds of organic materials.

A collapsible cable management arm is foldable with a plurality of heat dissipation apertures. The collapsible cable management arm includes a plurality of racks pivotally connected together which gives a zigzag chain structure being retractable. The rack is formed by a primary and a secondary plate. The secondary plate resembles the size and shape of the primary plate. The secondary plate slides into the tray-like primary plate to form the individual rack with hollow compartment there-between. The thickness of the rack arises from a primary positioning portion of the primary plate. The hollow compartment is further divided into connection and cable compartments by at least one pair of primary and secondary partitions.