39results about How to "Time varying" patented technology

A time domain communications system wherein a broadband of time-spaced signals, essentially monocycle-like signals, are derived from applying stepped-in-amplitude signals to a broadband antenna, in this case, a reverse bicone antenna. When received, the thus transmitted signals are multiplied by a D.C. replica of each transmitted signal, and thereafter, they are, successively, short time and long time integrated to achieve detection.

The present invention relates to a 3D time-of-flight camera for acquiring information about a scene, in particular for acquiring depth images of a scene, information about phase shifts of a scene or environmental information about the scene. The proposed camera particularly compensates motion artifacts by real-time identification of affected pixels and, preferably, corrects its data before actually calculating the desired scene-related information values from the raw data values obtained from radiation reflected by the scene.

Systems and methods of adjusting a pre-alarm time are provided, including detecting, by a sensor, an entry into a building by a person and generating detection data according to the detected entry. A processor communicatively coupled to the sensor adjusts a pre-alarm time according to the detection data. An alarm is output, by an alarm device communicatively coupled to at least the processor, according to the detection data and the adjusted pre-alarm time.

A semiconductor memory storage device is disclosed, the memory comprises: a plurality of storage cells for storing data; at least two access control lines each for controlling access to a respective at least one of the plurality of storage cells; at least two access control circuits each for controlling a voltage level supplied to a corresponding one of the at least two access control lines in response to an access request, the at least two access control circuits each comprising a capacitor and switching circuitry; routing circuitry for routing the access request and a boost signal to a selected one of the at least two access control circuits in dependence upon an address associated with the access request; wherein the at least two access control circuits are each responsive to: receipt of the access request from the routing circuitry to connect the selected access control line to a supply voltage; and receipt of the boost signal from the routing circuitry to disconnect the supply voltage from the access control line and to couple the boost signal to the access control line through the capacitor of the access control circuit to provide a boost to a voltage level on the access control line.

A synchronous signal generating circuit 100 includes a delay circuit 110 which receives and delays an external clock signal Ext.CLK by a predetermined time for issuing the same, a phase comparator 120 which compares an output of the delay circuit 110 with a phase of the external clock signal Ext.CLK, a variable constant current source circuit 140 which varies in a digital manner a value of a constant current supplied to an output node 140a based on a result of comparison by the phase comparator 120, and a delay control circuit 150 which adjusts a degree of delay by the delay circuit 110 in accordance with the value of the constant current supplied to the output node 140a. The degree of delay by the delay circuit 110 is controlled in accordance with the value of the constant current which varies linearly in accordance with the result of phase comparison.

The invention relates to a dynamic information encryption system that includes input interface, encryption module which is used to generate the time changed cryptogram for the source information, output interface which is used to output the said cryptogram, and the said encryption module is connected between the input interface and the output interface. The invention also relates to a dynamic information encryption method: A1) the input interface receives the source information and sends the plaintext to the programmable encryption device; A2) the programmable encryption device receives the plaintext from the input interface, the commands from the encryption device and the time-effect information from the time marking device; A3) the programmable encryption device chooses the encryption algorithm according to the commands, and does the combined encryption for the plaintext, commands and the time-effect information; A4) the programmable encryption device sends the encryption files to the output interface. The dynamic information encryption system and method improves the security of original information input by the computer, and the cryptograph has bogus randomness, even if the cryptograph is intercepted and it can't be used.

A beam scanning system for scanning an imaging surface includes a phase shifter for issuing phase signals, a radiation emitter for emitting a beam of radiation and a deflection element, such as an acousto-optic modulator or translating lens, for deflecting the radiation beam. Depending on the implementation, the emitter can be configured to phase shift the radiation beam and/or the deflection element can be configured to deflect the radiation beam in accordance with the issued phase signals. By emitting and/or deflecting the radiation beam in accordance with the phase signals, the length of the scan line formed on the imaging surface can be controlled. A deflector, such as a spin mirror or rotatable prism, is provided to direct the radiation beam to form a scan line on the imaging surface.

A method and apparatus for correcting the curl in drying and dried paper is presented wherein high velocity hoods are used in combination with drying cylinders. In addition, the use of impingement drying hoods provide a means to correct for variations in the moisture profile of the paper. High velocity hoods can be located in the drying section of a paper machine to compensate for uneven drying by paper cylinders.

The invention discloses a Windows-login-authentication-system method based on heart-sound authentication. The method includes the steps that heart-sound signals are extracted through an earphone, pre-emphasis processing is carried out, then noise passing through the heart-sound signals is removed with the wavelet de-noising method, and as heart sounds are single-cycle repeating signals, the heart-sound signals are subjected to data fusion, and the signal quality is improved. In the recognition stage, an independent wavelet extracting method based on data fusion is adopted, then a MFCC coefficient of reconstructed signals is extracted to serve as a characteristic value, an authentication method combined with the VQ algorithm and the DTW algorithm is designed, and the recognition accuracy rate is increased as far as possible. Login authentication of a PC is completed through a Winform login system.

The clock switch device of the present invention includes: a clock detector for receiving a plurality of clocks and clock selection data designating a clock to be selected, detecting whether or not the clock designated by the clock selection data among the plurality of clocks changes in signal level, and outputting the result as a detection signal; a control register for holding and outputting the clock selection data when the detection signal indicates that the clock designated by the clock selection data changes in signal level; and a selector for receiving the plurality of clocks and selecting a clock corresponding to the output of the control register among the plurality of clocks.

A method and a system for treating water on board a vessel before discharging such water to the sea. The water to be treated is pumped through a primary heat exchanger (12) where the water is pre-heated and then through a secondary heat exchanger (13) where the water is further heated, the secondary heat exchanger (13) being heated by thermal fluid from a central heating system primarily heated by heat recovered from different type of heat generating equipment and also possibly by fuel and/or electricity in cases where the heat recovered from the heat generating systems is not sufficient to treat the water in a sufficient manner.

The invention discloses a modeling and control method for a temperature and humidity system based on a closed space. The method comprises the following steps of S1, building a temperature and humidity system model of the closed space based on a mechanism analysis method and a step response system identification method; S2, designing a control system decoupler of the temperature and humidity system by using a feedforward compensation decoupling method; S3, designing a fuzzy adaptive PID control system of the temperature and humidity system based on fuzzy control and PID control; and S4, setting a fuzzy control rule MATLAB simulation and a control system Simulink simulation. According to the modeling and control method for the temperature and humidity system in the closed space, problems that a traditional PID algorithm is insufficient in anti-interference capacity and a conventional decoupling method is poor in effect are solved, and it is verified through experiments that the modeling and control method has the good effect on control precision and system stability of a temperature and humidity controller; and meanwhile, the anti-interference performance of the system is also improved.

The present disclosure provides a pixel driving circuit, a display substrate and a driving method thereof, and a display device. The pixel driving circuit includes a driving unit, a data voltage write unit, an energy storage unit, a threshold compensation unit, and a touch driving compensation unit. The energy storage unit comprises a first energy storage end and a second energy storage end. The touch driving compensation unit is connected to the second energy storage end of the energy storage unit to compensate the voltage of the second energy storage end in a touch phase, so as to maintain that driving current generated by the driving unit does not vary with time. The pixel driving circuit provided by the present disclosure can allow luminance of a driven electroluminescent element does not vary with time in a touch phase, thereby avoiding affecting light emission display of the driven electroluminescent element.

A TFT panel includes (i) a plurality of signal electrodes, (ii) a plurality of scanning electrodes which cross the plurality of signal electrodes, (iii) an active element provided in a vicinity of each intersection at which one of the plurality of signal electrodes and one of the plurality of scanning electrodes cross and connected to the one of the plurality of signal electrodes and the one of the plurality of scanning electrodes, (iv) a pixel electrode driven by the active element, and (v) a counter electrode to which an AC signal is applied, and which faces the pixel electrode. The REVC signal generating circuit generates a counter electrode generating signal, which is to be generated into a counter electrode driving signal by a counter electrode signal generating circuit, in synchronism with a horizontal synchronizing signal in such a manner that the polarity is inverted every horizontal period, and, when one polarity has a length of periods longer than the other polarity during one vertical period, the both polarities of the counter electrode have the same root-mean-square value of voltage during one vertical period by inverting the polarity having the longer period at any timing. With this, it is possible to reduce a low-frequency sound caused by piezoelectricity of a liquid crystal capacitance.

The invention discloses a physical layer key extraction method, system, device, equipment and a computer storage medium. The method comprises the steps of: determining channel information between a target antenna node and each receiver; randomly generating intelligent reflecting surface parameters of which the number is equal to that of receivers; based on the intelligent reflecting surface parameters and the channel information, pairing the intelligent reflecting surface parameters and the receivers one by one, obtaining a target pairing result; and based on the target pairing result, carrying out key extraction between the target antenna node and the receivers. The channel environment during key extraction is improved on the basis of the intelligent reflecting surfaces, so that the deployment cost is low; a static channel is artificially disturbed by using the random change of the intelligent reflecting surfaces, so that the correlation among multiple user channels is effectively eliminated while the channel time-varying property is increased, an effective channel detection value in the key extraction process can be increased, and the key extraction efficiency is improved; and the robustness is high. With the physical layer key extraction system and device and the computer medium adopted, corresponding technical problems can be solved.

A process and an arrangement for covering a flat-lying blank, preferably made of cardboard with a cover, in particular applicable in the production of book covers is described. The covering takes place in cycles in a number of working stations, whereby an overall cycle time can be given to each working station in advance. Each working station comprises at least one working means, to which at least one sub-cycle time is assigned. It is provided that in the case of a constant remaining overall cycle time, at least one sub-cycle time assigned to the working means of a procedural step is adapted to the processed materials. The present invention is in particular applicable when at least one edge of a cover applied to a blank is folded over. The folding over of the edge takes place thereby in a folding station within the pre-set overall cycle time. Within one cycle, at least the following procedural steps are carried out: “transport”, in which the blank with the cover is transported into the folding station, “preparing”, in which at least one folding means is placed to the edge of the cover, and “folding and pressing”, in which the folding means folds over the edge of the cover and presses it onto the blank. It can in particular be provided that the ratio of the sub-cycle time “folding and pressing”, assigned to the folding means to the overall cycle time is variable.

A system for controlling digital gas valves of an appliance utilizing a configurable duty cycle responsive to time, temperature and burner power level variables.