35 results about "Common path" patented technology

To provide a high frequency module with reduced transmission loss for signals in multiple bands.SOLUTION: A high frequency module 1 includes a switch 11 having a selection terminal 11b connected to an antenna 2a, a selection terminal 11c connected to an antenna 2b, and a common terminal 11a, a switch 12 having selection terminals 12a, 12b and a common terminal 12f, filters 41 and 42, an inductor 21 connected to a common path Pc connecting the common terminals 11a and 12f, an inductor 31 connected to a signal path P1 connecting the selection terminal 12a and the filter 41, and an inductor 32 connected to a signal path P2 connecting the selection terminal 12b and the filter 42, and a distance D31 between the inductor 21 and the inductor 31 is smaller than a distance D32 between the inductor 21 and the inductor 32.SELECTED DRAWING: Figure 2

The invention discloses a double-beam link vortex light correction system and method based on a model method, and the system comprises a double-beam common-path light path which is used for enabling vortex light and planar light to be transmitted in a common path, to pass through a turbulent flow or optical distortion region together, and to carry the same wavefront distortion information; the wavefront correction unit is used for dynamically compensating wavefront distortion information; the image acquisition and control unit is used for acquiring a corrected far-field light spot image after the planar light passes through a distortion area, and generating a driving instruction of the wavefront correction unit according to far-field light spot information to realize closed-loop control; and the topological charge detection module is used for carrying out topological charge detection on the corrected vortex light. According to the invention, indirect correction of the turbulence aberration of the common-path vortex light is realized, so that the correction efficiency and stability of the vortex light are improved.

The invention discloses a high-flux super-resolution laser direct writing device and method based on a metasurface, and the device employs a single metasurface to achieve the simultaneous shaping of an excitation light array and a suppression light array through wavelength polarization multiplexing, and replaces a complex independent shaping and beam combination light path in a conventional scheme. The system structure is greatly simplified, generated excitation light and suppression light are completely transmitted in a common path after passing through the DMD and are shaped by a single metasurface, the alignment error and relative drift problems of two light beams are eliminated, and the stability of the super-resolution processing effect is ensured.

Array single photon detection and two-dimensional camera common path fusion device and pixel matching method belong to the field of optical precision measurement. The array single photon detection and two-dimensional camera common path fusion device comprises a signal generator, a laser, an emitting optical system, a receiving optical system, a dichroic mirror, a two-dimensional camera, an array single photon detector, an array single photon counter and a data acquisition and processing fusion module. The method of the present application is as follows: the array single photon detection waveband pulsed laser and the two-dimensional camera sensing waveband ambient light returned by the target object are separated by using a common receiving optical path and a dichroic mirror to determine the pixel size and the number of the array single photon detector and the two-dimensional camera; the transmission light offset d is calculated according to the thickness of the dichroic mirror; the transmission light offset d is used as a correction factor to realize the pixel matching of the array single photon detection three-dimensional imaging and the two-dimensional camera image; the array single photon detection three-dimensional image and the two-dimensional camera image are superimposed, and the high resolution of the two-dimensional image is used to enrich the three-dimensional point cloud imaging information.

A method for clock tree synthesis and a computer-readable storage medium are disclosed. The method includes: acquiring a global clock tree of a target circuit, the global clock tree comprising multiple timing skew groups; determining sub-clock trees corresponding to each timing skew group based on each timing skew group, wherein each sub-clock tree includes a common path and several non-common paths branching from the common path, and the common and non-common paths each include several components; for each sub-clock tree: determining a drive object to be processed based on the common path of the sub-clock tree; calculating the load center location based on the several non-common paths; inserting a load center component at the load center location; when the components on the common path where the inserted load center component is located, and the components adjacent to the load center component in each of the non-common paths connected to the inserted load center component, do not meet preset design constraints, setting several signal conditioning units between the drive object to be processed and the inserted load center component.

The application discloses a liquid refractive index sensing system and method based on an optical waveguide structure and weak measurement. The application comprises an SLD light source, a Gaussian filter, a polarizer I, a polarizer II, an optical waveguide, a quarter-wave plate I, a quarter-wave plate II and a spectrometer. The SLD light source emits laser with a center wavelength of 830 nm, and the laser is pre-selected by the front selection polarizer after passing through the Gaussian filter. The light is emitted after multiple total internal reflections on the surface of the waveguide of the liquid to be measured, the phase of the p and s polarizations of the emitted light is adjusted by the wave plate, the light is post-selected by the post-selection polarizer, the emitted light is received by the spectrometer and the center wavelength is analyzed, and finally the refractive index of the liquid to be measured is calculated according to the center wavelength displacement by the computer. The application also provides a liquid refractive index sensing method based on an optical waveguide structure and weak measurement. The application realizes straight-line common path and multiple reflections through the optical waveguide, and has higher stability and sensitivity than traditional measurement methods.

The application discloses a service transmission method, an electronic device, a storage medium and a program product, and belongs to the technical field of automatic switching optical networks. A service transmission method comprises the following steps: based on a networking structure, a common path, a branch path and a branch station for transmitting a target service from a target source station to multiple sink stations are acquired, wherein the branch station is a starting station of the branch path; in response to transmitting the target service, the target service is transmitted from the target source station to the branch station corresponding to each sink station through the common path, so that the branch station transmits the target service to each sink station through the branch path corresponding to each sink station.

The application discloses a bottom-up clock tree synthesis method and system, which comprises inserting a logic unit to be inserted between a driver and a load connected to the driver; judging whether a clock tree with the inserted logic unit meets a design rule constraint, if yes, the insertion of the logic unit between the driver and the load connected to the driver is completed, if not, taking the inserted logic unit as a new load and starting from the insertion of the logic unit to be inserted between the driver and the load connected to the driver. When the logic unit is inserted, the logic unit is inserted layer by layer from bottom to top, and leaf nodes which need to share clock paths as much as possible due to clock skew, common control critical path and other reasons can be divided under the same sub-tree as early as possible in the bottom layer, so that the power consumption and the chip area occupied are reduced, the problem that the common path of the leaf nodes of the critical path is too short is avoided, and the clock tree synthesis situation of a buffer, an inverter or a mixture of both can be applied.

This disclosure provides a network path probing method, apparatus, and medium, relating to the field of network technology. The method includes: obtaining the splitting results of N first network path probing tasks, the splitting results including: one second network path probing task, which does not reach the target address but only probes a common path; and N third network path probing tasks, which reach their respective target addresses but do not probe the common path, wherein the common path is the common part of the target paths to the N target addresses; and executing or instructing the execution of network path probing tasks according to the splitting results. This disclosure splits the original network path probing tasks into common path probing tasks and individual path probing tasks by finding a common path among multiple original network path probing tasks. The common path part only needs to be probed once, reducing the number of packets sent for network probing.

Disclosed is a method and a device for rapidly measuring the transmission matrix of an ultra-long optical fiber, belonging to the field of information optics. The solution couples the spatial mode into ultra-long few-mode / multi-mode optical fiber for transmission. By obtaining the common path reference light at the output end of the ultra-long few-mode / multi-mode optical fiber and interfering with the signal light at the output end, the complex amplitude distribution of the signal light field output by the optical fiber is reconstructed, weight coefficients of different modes are obtained by performing overlapping integral on the complex amplitude distribution and the ideal complex amplitude distribution of different spatial modes. The transmission matrix of the ultra-long few-mode / multi-mode optical fiber can be obtained by rapidly switching the mode incident into the ultra-long few-mode / multi-mode optical fiber and sequentially calculating the weight coefficients of the different modes at the output end.

The invention discloses a bottom-to-top clock tree synthesis method and system. The method comprises the following steps: inserting a logic unit to be inserted between a driver and a load connected with the driver; and judging whether the clock tree in which the logic unit is inserted meets design rule constraints or not, if so, completing insertion of the logic unit between the driver and the load connected with the driver, and if not, taking the inserted logic unit as a new load, and starting execution from insertion of the logic unit to be inserted between the driver and the load connected with the driver. When the logic units are inserted, the logic units are inserted layer by layer from bottom to top, leaf nodes which need to share clock paths as far as possible due to clock skew, common control of key paths and other reasons can be divided into the same sub-trees as soon as possible at the bottom layer, power consumption and occupied chip area are reduced, and the cost is reduced. The problem that a common path of leaf nodes of a critical path is too short is avoided, and the method can be suitable for the situation of clock tree synthesis of a buffer, a phase inverter or a mixture of the buffer and the phase inverter.

The invention discloses a clock tree synthesis method and a computer readable storage medium. The method comprises the steps that a global clock tree of a target circuit is acquired, the global clock tree comprises a plurality of time sequence deviation groups, a sub-clock tree corresponding to each time sequence deviation group is determined according to each time sequence deviation group, each sub-clock tree comprises a common path and a plurality of non-common paths branched by the common path, and the common path is a common path; the common path and the non-common path comprise a plurality of elements; for each sub-clock tree, determining a to-be-processed driving object according to a common path of the sub-clock tree; calculating a load center position according to the plurality of non-common paths; a load center element is inserted into the load center position; and when the element of the common path where the inserted load center element is located and the element adjacent to the load center element in each non-common path connected with the inserted load center element do not meet the preset design constraint, a plurality of signal adjusting units are arranged between the to-be-processed driving object and the inserted load center element.

The semiconductor device includes an n-type first semiconductor region 11 formed on a surface side of a p-type semiconductor substrate 10 and serving as a common path for currents flowing through a switching element and a protection element, an n-type common contact region 12 formed on the first semiconductor region 11 with a high impurity concentration and connected to a common electrode 21 serving as both a first main electrode and a protection element side first electrode, a p-type second semiconductor region 13 and a p-type third semiconductor region 14 locally formed in the first semiconductor region 11 at locations separated from the common contact region 12, and an n-type fourth semiconductor region 15 locally formed in the second semiconductor region 13 in plan view. A second main electrode 22 is connected to the fourth semiconductor region 15, and a protection element side second electrode 26 is provided inside the third semiconductor region 14.

The invention provides a high-frequency module which reduces transmission loss of signals of a plurality of frequency bands. A high-frequency module is provided with: a switch (11) having a selection terminal (11b) connected to an antenna (2a), a selection terminal (11c) connected to an antenna (2b), and a common terminal (11a); a switch (12) having selection terminals (12a), (12b) and a common terminal (12f); filters (41) and (42); an inductor (21) connected to a common path connecting the common terminals (11a) and (12f); an inductor (31) connected to a signal path connecting the selection terminal (12a) and the filter (41); and an inductor (32) connected to a signal path connecting the selection terminal (12b) and the filter (42), the distance between the inductor (21) and the inductor (31) being smaller than the distance between the inductor (21) and the inductor (32).

The present invention makes it possible to reduce the number of pieces of information required when managing path information for a plurality of VPNs superimposed on a network in an EVPN-VXLAN network or the like. Registration information pertaining to a path is created on the basis of the result of aggregating, between devices having the same configuration, a plurality of pieces of path information representing a VPN. In cases where a VLAN environment is in a VLAN-based mode, common path registration information representing VPN paths having the same configuration and path registration information representing a correspondence relationship between the network ID and one piece of the common path registration information are created. When all VPNs are detected to be in a full-mesh connection state in cases where the VLAN environment is in a VLAN recognition mode, a VRF table is created in which there is registered a list of transfer destination VXLAN tunnel end points aggregated into one set without distinction of network IDs.

The invention discloses a chip clock tree adjustment method and device, equipment and a storage medium, and relates to the technical field of chip design, and the method comprises the steps: classifying time sequence paths in a clock tree of a chip through analyzing the type of the time sequence paths and preset chip design requirements; aiming at a plurality of types of time sequence path groups in the path classification result, screening paths based on a preset path group relaxation value; based on the obtained path related information of the target path table, respectively storing different types of standard units between branch points of the time sequence tree and a path starting point / ending point into different lists; determining a new branch point based on the total number of standard units of each clock path unit table and unit information of a target subunit table in the unit classification storage result; and performing timing repair value verification based on the new clock common path pessimistic removal value corresponding to the new branch point to determine whether to trigger a clock tree branch point adjustment operation. According to the method, the precision, the performance and the scene adaptability of clock tree timing optimization can be improved.

The application discloses an air inlet system, a process equipment of a semiconductor device and a process method. The air inlet system comprises a first air mixing part, a second air mixing part and a controller. The first air mixing part is configured to introduce deposition gas or protective gas to the center of a wafer below a reaction cavity. The second air mixing part surrounds the first air mixing part and is configured to introduce protective gas or etching gas to the edge of the wafer. The controller is configured to control the first air mixing part to introduce deposition gas and the second air mixing part to introduce protective gas so that the protective gas is introduced circumferentially around the deposition gas, thereby limiting the deposition of the deposition gas to the center of the wafer to form a film. In response to the completion of the film deposition, the controller keeps the wafer position unchanged, controls the first air mixing part to introduce protective gas and the second air mixing part to introduce etching gas so that the etching gas is introduced circumferentially around the protective gas, thereby limiting the etching of the film to the edge of the wafer in situ. The application can avoid the common path pollution problem caused by the falling of the edge mask of the wafer during the wafer transfer process.

The application relates to a photoacoustic-OCT dual-mode endoscopic imaging system based on multi-element focusing, which comprises a signal control module, an optical coherence tomography module, a photoacoustic signal excitation module, a light beam common path module, an endoscope probe, a rotating retracting module and a data acquisition module; a sample arm of the optical coherence tomography module and the photoacoustic signal excitation module enter the endoscope probe through the light beam common path module; an optical assembly and a photoacoustic signal receiver are arranged in the endoscope probe, the optical assembly focuses combined laser beams of the OCT and the photoacoustic and irradiates the target tissue; ultrasonic signals generated after the target tissue is irradiated by pulsed laser are received by the photoacoustic signal receiver and converted into ultrasonic electric signals, which are sent to the data acquisition module; the rotating retracting module controls the endoscope probe to perform three-dimensional body data scanning, and the data acquisition module receives an OCT interference signal and ultrasonic electric signals of the photoacoustic signal receiver. Compared with the prior art, the application has a large working distance, high resolution and is less affected by water.

This invention discloses a dual-laser synergistic high-temperature, high-speed rotating object axial vibration measurement device, relating to the field of vibration detection technology. It includes a main plate and a radiation-resistant plate mounted on the main plate. A drive motor is installed on the main plate. Measuring the dynamic characteristics, such as axial vibration, of a high-speed rotating object at high temperatures is a challenging problem. This device uses a dual-laser measuring instrument for measurement, and also features non-contact functionality. Furthermore, the dual lasers can compensate for light path disturbances caused by hot airflow. Specifically, one laser acts as the main measurement optical path, while the other acts as a reference optical path, specifically monitoring common path optical noise caused by hot airflow. Through differential calculations by a subsequent signal processor, environmental noise is subtracted from the main signal, thereby extracting the pure vibration signal of the measured turntable.

A radio frequency module includes a first switch having a selection terminal connected to an antenna and a second selection terminal connected to an antenna and a first common terminal; a second switch having third and fourth selection terminals and a second common terminal; two filters; an inductor connected to a common path connecting the first and second common terminals; an inductor connected to a first path connecting the third selection terminal to the first filter; and an inductor connected to a second path connecting the fourth selection terminal to the filter. The distance between the first and second inductors is shorter than the distance between the first and third inductors.

The invention relates to a field-of-view combining method and device of a spectrum instrument, and relates to the technical field of multi-optical-path beam combination. The device comprises a split-caliber flat plate type prism; the sub-aperture flat plate type prism comprises at least one transmission area and at least one reflection area. A reflecting surface is arranged at the position where the reflecting area is connected with the transmitting area; a spectrograph slit area or an area-array camera focal plane area is arranged below each transmission area and each reflection area respectively; and a plurality of spectrometer slit areas or area-array camera focal plane areas are connected in series in the length direction. The target light and the illumination light are connected in series in the length direction of the slit of the spectrometer by using the field-of-view merging technology based on the split-aperture flat-plate prism, the field-of-view merging of the target light and the illumination light is realized, then the target light and the illumination light enter the same spectrometer and are imaged on the same focal plane detector, and the target light and the illumination light are integrated at each integral time. And the target light and the illumination light are output to the same frame of image, so that the target light and the illumination light are synchronously measured in a common-light-path and common-reference manner.

The present application relates to a kind of broadband light interference type roughness measuring device based on common path transmission, including super radiation emitting diode, 1×2 optical fiber coupler, optical fiber collimator, cube spectroscope, reference arm, probe arm, spectrometer and host computer;Collimator, spectroscope, reference arm and probe arm constitute interference device and install on adjustable mounting frame, and measured object is set on displacement table;The two interfaces of optical fiber coupler same side connect super radiation emitting diode and spectrometer, and the single output port of other side connects interference device;Super radiation emitting diode radiates broadband light, which is transmitted through optical fiber coupler, then is divided into reference light and probe light through collimator and spectroscope, respectively enters reference arm and probe arm, respectively after being reflected by reference mirror and measured object surface, converges and interferes, enters spectrometer through optical fiber coupler, then enters linear array CMOS camera and is imaged and transmitted to host computer.The device and method are beneficial to improve the accuracy of non-contact roughness measurement.

The invention discloses a differential interference detection device and a detection method for pattern-free wafer surface defects, which are characterized in that a laser light source lens is coupled into an optical fiber, sequentially passes through a collimator, a half-wave plate and a beam expander, is reflected into a quarter-wave plate through a beam splitter prism and a reflector, and is split into P light and S light by a polarization beam splitter prism; after being reflected by the two right-angle prisms, the light beams are transmitted in a common path, focused by the focusing mirror and irradiated to the surface of a wafer through the diaphragm; and subsequently, the light is reflected by the wafer, returns to the beam splitter prism along the original path, passes through the beam splitter prism and the polaroid, enters the polarization beam splitter prism through the focusing mirror, is split into P light and S light signals and is collected by the photoelectric detector, and then the phase gradient of the detected surface is solved, so that accurate surface defect information is obtained. According to the invention, the existence and the shape of the surface defect can be detected on line, the three-dimensional geometric structure of the surface defect can be measured, and the defect type and the forming source can be accurately distinguished, so that the defect geometric structure detection and identification problem is solved.

Disclosed is a method and a device for rapidly measuring the transmission matrix of an ultra-long optical fiber, belonging to the field of information optics. The solution couples the spatial mode into ultra-long few-mode / multi-mode optical fiber for transmission. By obtaining the common path reference light at the output end of the ultra-long few-mode / multi-mode optical fiber and interfering with the signal light at the output end, the complex amplitude distribution of the signal light field output by the optical fiber is reconstructed, weight coefficients of different modes are obtained by performing overlapping integral on the complex amplitude distribution and the ideal complex amplitude distribution of different spatial modes. The transmission matrix of the ultra-long few-mode / multi-mode optical fiber can be obtained by rapidly switching the mode incident into the ultra-long few-mode / multi-mode optical fiber and sequentially calculating the weight coefficients of the different modes at the output end.

The invention discloses a time sequence optimization system for eliminating chip OCV influence. The system comprises a global clock source module, a pre-stage clock tree module, a pre-stage data transmission module, an FIFO core processing module, a post-stage clock tree module and a post-stage data transmission module. The global clock source module provides a homologous original clock for the front-stage clock tree module and the rear-stage clock tree module, the front-stage clock tree module and the rear-stage clock tree module respectively construct independent small clock trees, and asynchronous write and read clocks are provided for the front-stage data transmission module, the rear-stage data transmission module and the FIFO core processing module; the FIFO core processing module interrupts the clock phase dependence of the synchronous circuit through an asynchronous read-write mechanism, divides an original single large clock tree and a long data channel into two independent subsystems, and achieves asynchronous caching and transmission of front-stage data and rear-stage data. According to the invention, the delay deviation superposition influence of the OCV on a clock non-common path is eliminated from the source, the time sequence convergence design difficulty is greatly simplified, and the rapid convergence of the chip time sequence is realized.

The application discloses a clock tree structure and an implementation method thereof, and relates to the technical field of clock trees.The clock tree structure comprises a trunk clock network and a branch clock network.The trunk clock network is introduced from outside and is composed of a first-stage buffer unit and a second-stage buffer unit.The trunk can be horizontal or vertical.The branch clock network is introduced from the trunk clock network and is composed of a second-stage buffer unit to a third-stage buffer unit.The branch clock drives the load in a window with an L*L size, that is, the third-stage buffer unit drives a fourth-stage buffer unit in a tree structure, and so on, to drive an nth-stage buffer unit and a gated clock unit.The beneficial effects are as follows: the clock tree structure is built by establishing the trunk clock network and the branch clock network, the number of buffer units on the clock network is reduced, and the chip power consumption is reduced;the main clock tree and the sub clock network play the role of a common path, the number of stages of the clock tree is reduced, the influence of OCV on the clock is reduced, and the final timing convergence is easy.

The present invention relates to a method and arrangement for providing a complete row of mineral fiber slabs in a mineral fiber slab production process. In this method, a complete row of mineral fiber slabs is transported in the production process, with each row containing a predetermined number of mineral fiber slabs. Defective slabs are removed, thereby forming one or more incomplete rows of mineral fiber slabs. The complete and incomplete rows are transported on a conveyor along a common path in a first direction of movement, with one or more replacement slabs inserted into each incomplete row from at least one slab buffer before the stacker. The incomplete rows are thus made into a complete row containing a predetermined number of mineral fiber slabs.

A cementitious product (1) comprising: a substrate (2) formed from a cementitious material; and at least one branched channel (3) embedded within the substrate configured to provide a conduit for a second material to flow through the substrate; wherein the at least one branched channel comprises a plurality of interconnected channel elements, the plurality of interconnected channel elements comprising at least one diverging portion at which a plurality of paths diverge from a common path, and / or at least one converging portion at which a plurality of paths converge to a common path.

This invention relates to the field of microjets laser technology and discloses a microjets laser anti-backflow device, comprising: a housing, wherein a water inlet is provided on the surface of the housing, a lens is installed on the inner wall of the housing, a water flow surrounding cavity is provided on the inner wall of the housing, and a flow stabilizing mechanism is provided on the inner wall of the water flow surrounding cavity; and a mounting block, wherein the mounting block is installed on the inner wall of the housing, and a plurality of water flow holes and a flow injection hole are respectively provided inside the mounting block, and the water flow holes and the flow injection hole are connected. This invention can reduce water flow turbulence and bubble generation, and can achieve step-by-step flow stabilization, avoid local eddies, and ultimately form an ideal laminar flow at the nozzle, thereby improving processing accuracy. It can also cut off the most common path for bubble generation, avoid large bubbles generated by turbulent mainstream flow and vortex entrainment of air, and prevent gas precipitation throughout the flow area caused by large fluctuations in flow rate or pressure.

The application discloses a Sketch data processing method and device based on cooperation of a programmable switch and a DPU, and a medium, and the method comprises the following steps: converting a Sketch data processing task into a basic operation set; processing the basic operation set through an automatic task segmentation algorithm to obtain an optimal unloading scheme of the basic operation set on a fast path and a common path; cooperating between the fast path and the common path according to the optimal unloading scheme of the basic operation set on the fast path and the common path to complete the Sketch data processing task; and in a running process, a Sketch data stream first reaches the fast path, the fast path and the common path respectively perform corresponding Sketch data processing operations, and meanwhile, the fast path controls the rate of sending Sketch key-value pair data to the common path to prevent saturation of the common path.