42 results about "Phase width" patented technology

A correlation value calculating apparatus reduces the calculating time with respect to the whole phase range. The correlation value calculating apparatus for multiplying a reception signal by a spreading code, thereby calculating a correlation value which gives a degree of correlation for the spreading code over a predetermined phase width on a predetermined length unit basis is constructed by: an arrangement for comparing an adaptively set threshold value with a correlation value calculated in an interval shorter than the predetermined length at the time of the calculation of the correlation value; an arrangement for executing the calculation of the correlation value over the whole interval of the predetermined length only in the case where the calculated correlation value exceeds the threshold value; and a discriminating arrangement for stopping the calculation of the correlation value in the case where the correlation value calculated in the interval shorter than the predetermined length does not exceed the threshold value.

A method is provided for designing an altPSM mask including a substrate. The method includes the following steps. Provide a circuit layout. Identify critical elements of the circuit layout. Provide a cutoff layout dimension. Identify critical segments of the circuit layout which are critical elements with a sub-cutoff dimension less than the cutoff dimension. Create basic phase shapes associated with the critical segments. Remove layout violations from the phase shapes. Determine whether the widths of phase shapes associated with a critical segment have unequal narrower and wider widths. If YES, then widen each narrower phase shape to match the width of wider phase shape associated with the critical segment and repeat the steps starting with removal of layout violations until the test answer is NO. When the test answer is NO, provide a layout pattern to an output.

The invention discloses a milling force modeling method for titanium alloy TC18 milling process, which is used for solving the technical problem that equal phase width non-zero milling force produced in titanium alloy TC18 milling process with cutter eccentricity can not be effectively simulated when milling force modeling for titanium alloy TC18 milling process in the prior art is carried out. In the technical scheme, the effect of a side blade and a bottom blade on milling force is considered when the side blade participates in cutting, the effect of the bottom blade on the milling force is also considered when the side blade quits cutting, and the disadvantage that the equal phase width non-zero milling force produced in titanium alloy TC18 milling process with cutter eccentricity can not be effectively simulated in the prior art is overcome; as bottom blade milling force coefficient can be expressed as exponential function of chipping width, the disadvantage that the size effect in the bottom edge cutting process can not be simulated in the prior art is overcome.

An integrated device having energy feedback and blackout emergent functions is composed of an energy feedbacker, a storage battery controller and a storage battery (group). The energy feedbacker is based on the theory of active inversion phase width control, uses lock phase ring technology to track grid synchronization to determine inversion output voltage phase angle and amplitude as PWM controlamount, ensures to feedback electricity to the grid with unit power factor, and supplies electricity in an independent power generation manner when the grid is cut off. The storage battery controlleris based on separated DC / DC conversion to recharge the storage battery (group) and supply electricity to DC bus from the storage battery when the grid is cut off. The energy feedbacker begins to generate electricity within half cycle of blackout of the grid, for the elevator system, the power supply is no different from power supply of the grid. The invention has the following characteristics: 1.the increase of the system cost is small; 2. average system energy saving is over 30%; 3. system wiring is almost unchanged and reliability is not influenced; and 4. emergency security is vastly improved, and the elevator is more humane as a special device.

This invention provides a rectifier circuit device that achieves both the reduction of power supply harmonic waves and the reduction of circuit loss at the same time. There are included an AC voltage phase detecting means (201), an AC current detecting means (103) and a DC voltage detecting means (110). It is arranged that a semiconductor switch (104) be chopped to follow a desired current waveform. The DC voltage is adjusted to cause a phase, in which to halt the chopping, to become a desired phase, while, if a phase width for which to continue the chopping exhibits a value less than a set value, the DC voltage is adjusted, on a priority basis, to cause the phase width, for which to continue the chopping, to exhibit the set value. As a result, the target current waveform exhibits a combination of a monotonous increase and a constant value during the former half of the half period of the AC power supply and includes a section exhibiting a zero value during the latter half thereof.

The invention discloses computer-generated holograms, which are formed by arranging phase microstructural units repeatedly on a thin plain film. The computer-generated holograms are characterized in that: each phase microstructural unit contains four platforms which are arranged sequentially from bottom to top; each platform forms a phase; the width of each phase platform, namely the phase width, is 1 / 4 of the total width of each phase microstructural unit; the lowest platform is taken as a zero phase, and the phase heights of the other three high platforms are d1, d2 and d3 respectively, wherein d3-d2 is equal to d1. The computer-generated holograms of which the energy of 0 stage and the energy of 1 stage are equal are obtained, so the computer-generated holograms can be applied on occasions when light splitting devices of which different energy levels have equal energy are needed for testing off-axis convex aspheric surfaces and the like.

The invention discloses a polymer stabilized blue phase liquid crystal composition as well as a preparation method and application of the liquid crystal composition. The liquid crystal composition comprises a component I, a component II and a component III, wherein the component I is a nematic phase liquid crystal which meets the following conditions: delta n is 0.13-0.2, and delta epsilon is 25-50; the component II is a chiral compound; the component III is a product which is prepared from a monomer in a photopolymerization manner. According to the liquid crystal composition disclosed by the invention, photopolymerization is initiated from a polymer monomer compound III by using a photoinitiator so as to form stable combination of the polymer, the chiral compound and a liquid crystal main body, so that the blue phase liquid crystal material is formed, the blue phase width of the blue phase liquid crystal material is effectively widened, for example, greater than 100 DEG C, and the blue phase temperature area of the blue phase liquid crystal material is widened to be extreme low temperature, such as at least -30 DEG C, so that the application range of the blue phase liquid crystal material is widened.

The invention provides a method and a device for reconstructing a heart CT image. The method comprises steps: periodic electrocardiosignal data of the heart are acquired; according to the electrocardiosignal data, a two-dimensional matrix is mapped, and an electrocardiogram period matrix is acquired; a detection window with a preset time phase width is used to traverse the electrocardiogram periodmatrix, and a target heartbeat time phase region is determined; and according to CT scanning raw data corresponding to the target heartbeat time phase region, a heart CT image is reconstructed. By adopting the method of reconstructing the heart CT image, a heart coronary image of an examined body can be reconstructed efficiently and accurately, the reconstructed heart CT image quality is improved, and clear image data for enabling doctors to accurately diagnose heart diseases are provided.

Disclosed is a rectifier circuit device that, by chopping a semiconductor switch (104), shorts or opens the output terminal of a single-phase AC power source (1) via a reactance, rectifying the AC voltage supplied by the single-phase AC power source (1) via the reactance (102) into a DC voltage and supplying said DC voltage to a load. A control device (100) in said rectifier circuit device: controls the chopping of the semiconductor switch (104) so as to make a detected current waveform match a target current waveform; controls the amplitude of the target current waveform so as to make a detected DC voltage match a prescribed target DC voltage; and controls said prescribed target DC voltage so as to make either the width of a chopping motion phase, which is when the semiconductor switch (104) is in a chopping motion state, or the width of a chopping rest phase, which is when the semiconductor switch (104) is in a chopping rest state, match a prescribed phase width.

A method is described for designing an alternating phase shifted mask (altPSM) by optimally selecting the width of phase shapes. The selection of optimal phase shape widths is achieved by providing a lithography metric that describes the relationship between phase shape width and the target image dimension such that the metric, such as process window or across chip linewidth variation (ACLV), is optimized. In a preferred embodiment, ACLV is computed by Monte Carlo simulation by providing a set of error distributions for lithographic parameters such as focus, dose, lens aberrations, and the like. Alternatively, a lookup table of optimal phase widths associated with target image dimensions may be provided. The resulting altPSM is characterized by phase shapes having widths that vary according to the widths of the target image dimensions.

The invention discloses a micro-nano indentation experiment method for a fiber-reinforced composite and belongs to the technical field of micro-nano mechanical testing. A fiber-reinforced composite under test is subjected to embedding prior to grinding and polishing so as to obtain a test sample of nano indentation and nano scratch; a start of scratch is a center point of a circular area; a constant scratch depth is kept for a presser by means of feedback adjustment; a series of equal depth scratches are made from the center point of the circular area sequentially through fiber, an interfacialphase and a base. Start and end point positions of the interfacial phase of each scratch are acquired through contact mechanics judging rules; the start and end points of the interfacial phase are sequentially connected by lines, and accordingly morphology of the interfacial phases is acquired. The method of the invention has the advantages that interfacial phase width of a typical area under certain depth can be effectively judged; when the indentation depth is less than the scratch depth, entry of the indentation in the interfacial phase is avoided, experiment precision is improved, and micro-nano indentation properties of the fiber-reinforced composite with no influence of peripheral effect are acquired.

A synchronization detecting circuit detects a synchronous signal from a reproduced signal of a recording medium in which a random shift method is employed. A window generator in the synchronization detecting circuit generates a third window having as a central phase one predicted phase in a second predicted coordinate that is obtained by replicating a first predicted coordinate indicating a predicted phase of each synchronous signal that repeatedly appears in the reproduced signal and having a phase width equivalent to twice a random shift width when the synchronous signal is not detected using a first window after the synchronous signal is detected using a second window by a synchronization detector.

The electrode lengths of a plurality of electrodes linearly arranged in an acceleration cavity are proportional to the velocity of a traveling ion beam. Further, the electrode length is so designated that, in each half of a predetermined cycle in the ion beam direction of travel, the absolute value of a difference, relative to a length that is proportional to the beam traveling velocity is equal to or greater than a value corresponding to the phase width of the traveling ion beam, is provided for electrodes that do not exceed three units and that are fewer than electrodes allotted to half the predetermined cycle.

A fast analysis method of steady-state fields performs arithmetic processing over plural time steps, performs transient analysis on the basis of an equation having a time derivative term, obtains a physical quantity of an analysis object, and includes the steps of reading input data including a time average width necessary to perform time averaging on the physical quantity, a phase width of a fundamental wave corresponding to the time average width, or a time step width necessary to perform the time averaging, and finite element modeling data of the analysis object by the arithmetic device; obtaining a time-averaged physical quantity using the time average width, the phase width of the fundamental wave, or the time step width by the arithmetic device; and obtaining a steady-state field of the physical quantity through a correction of the physical quantity using the time average quantity by the arithmetic device.

This invention discloses a clock phase-discriminating device and a method for testing the phase difference of a primary signal and a tested signal, in which, the phase signals to be tested expressing the phase difference between the primary signal and the tested signal should be got and the phase-discriminating clock signal numbers contained in the width of the phase signal te be tested should be accumulated to carry out symmetric integration to the continued phase-discriminating clock signals to get numeric quantity integration result of phase-discriminating clock signals and their phase values then to compute the phase width of the phase signal to be tested, which can increase the accuracy for clock phase-discrimination.

The invention discloses a high linearity variable bit width interpolator, comprising two input reference phases Ain and Bin, a phase control word PIN (0:X), and an interface of a bit width control word PIN_len. The bit width of the input reference phases is changed by the phase width control word PIN (0:X) to regulate the output phase precision of the interpolator. As the invention brings in the enable logic to an interpolation unit (MixerCell), the interpolation unit (MixerCell) can be divorced from a main circuit at any time in the working condition to realize the changeability of the bit width of the input phase control word and flexibly change the interpolation output precision. Meanwhile, a controllable switch corresponding to the input phase control word is introduced on a leakage path of the interpolation unit (MixerCell), therefore crosstalk caused by difference between proper time of two pairs of reference differential signals of input ends of the interpolator is modified, and then the linearity of the interpolation output result is greatly improved.

The invention discloses a flat cable type coil cloth leftover detection device. The flat cable type coil cloth leftover detection device comprises a magnetic ball, a detection circuit and an induction coil, wherein the magnetic ball is fixed on to-be-dyed cloth, the induction coil is arranged on the outer wall of a cloth guiding pipe of a cloth dyeing machine and is connected with the detection circuit; and when the magnetic ball moves in the cloth guiding pipe of the cloth dyeing machine and passes through the induction coil, the detection circuit detects a signal, processes the signal and output the counting signal of a fixed phase width. According to the flat cable type coil cloth leftover detection device, the motion parameters of cloth in a dyeing cylinder can be simply, rapidly, accurately and efficiently measured, so that the detection rate of cloth leftover is greatly increased.

A synchronizing position detecting circuit includes a window size determining circuit, a synchronizing code generating circuit, a correlation circuit and a synchronizing position determining circuit. The window size determining circuit calculates a moved distance of a mobile station during a sleep time based on a moving speed and the sleep time and selects a window size based on a phase change of a distance signal corresponding to the moved distance. The code generating circuit repeatedly produces a synchronizing code that coincides with a part of a code of the distance signal and successively shifts a phase of the synchronizing code by a predetermined phase width so as to shift the window size. The correlation circuit calculates a correlation function between the synchronizing code and the distance signal. The position determining circuit determines a correlation function having a maximum value to detect the distance signal and outputs a synchronizing position signal representing a detecting position.

The invention discloses a method of judging morphology of an interfacial phase of a micro-nano nonuniform material and belongs to micro-nano mechanics test methods. When an indentation depth is less than a scratch depth, an indentation can be avoided reaching the interfacial phase, experimental precision is improved, and micro-scale mechanical properties under no influence of peripheral effect areacquired; the nonuniform material is cut and polished to obtain a test surface suitable for nano indentation experiment; an optical microscope of a nano indenter is used to locate a rectangular areaincluding the interfacial phase in a certain range; a right-angle coordinate system containing all scratch paths is established, coordinates of acquisition points on the scratch paths are imported into origin, start and end points of the interfacial phase are connected via lines, and morphology of the interfacial phase in the rectangular area is obtained; the results are imported into SPSS (statistic package for social science) to perform data analysis so as to obtain change law of the morphology of the interfacial phase of the micro-nano nonuniform material. The method enables interfacial phase width of a typical area at certain depth to be effectively judged during nano indentation experiment on a micro-nano material.