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62 results about "Differential line" patented technology
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Differential line. A kind of electrical connection using two wires, one of which carries the normal signal (V) and the other carries an inverted version the signal (-V).
Differential transient electromagnetic method device and unexploded ordnance detection method thereof
ActiveCN121386011AElectric/magnetic detectionAcoustic wave reradiationDifferential lineUnexploded ordnance
The invention belongs to the technical field of geophysical exploration, and particularly discloses a differential transient electromagnetic method device and an unexploded ordnance detection method thereof.The differential transient electromagnetic method device is characterized in that a transmitter injects emission current into an emission loop, and the emission loop generates a primary field excitation signal; the underground anomalous body target generates a secondary field excitation signal under the action of the primary field excitation signal; the receiving coil assembly is based on the structure of a differential coil, synchronously counteracts a primary field excitation signal and a uniform background signal in an induced voltage, and expands a local asymmetric differential signal generated by an underground anomalous body target; and the receiver carries out time sequence analysis on the local asymmetric differential signals and extracts differential signal features so as to realize positioning and identification of an underground anomalous body target. The device is suitable for detection of shallow-buried small bodies such as UXO, the overall arrangement range of the device is small, and rapid arrangement and mobile observation in the field are facilitated.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Method and system for calculating differential impedance of mesh shielding structure, device and medium
The application discloses a kind of grid shielding structure differential impedance calculation method and system, equipment, medium, the method is based on the conductor width and pitch of grid shielding layer first Calculation obtains escape ratio, then signal escape radiation is equivalent to the increase of dielectric thickness farther, to calculate equivalent dielectric thickness, based on time equivalence principle Calculation obtains the equivalent dielectric constant between electric ground, finally calculates differential impedance.The application first proposes the calculation theory and calculation model of grid shielding structure differential impedance, considers the influence of the escape effect of grid shielding layer on differential impedance calculation, by the signal escape of grid shielding layer is equivalent to the increase of dielectric thickness, and based on time equivalence principle Calculation equivalent dielectric constant, different from the dielectric constant of pure dielectric between transmission line, greatly improve the precision of grid shielding structure differential impedance calculation, can be well applied to the differential line design of grid shielding structure, is conducive to improving the first pass rate of differential impedance design.
Owner:AOSHIKANG TECH CO LTD
Differential line conversion structure and antenna device
The present disclosure relates to a differential line conversion structure and an antenna device with which further size reduction can be achieved. This differential line conversion structure comprises: a single line in which one wire is disposed; a differential line in which two wires are disposed substantially parallel to each other; a propagation mode conversion region which converts the propagation mode of a signal to be inputted to the differential line at a connection point where one wire constituting the differential line is electrically connected to the wire constituting the single line; and a filter structure which is disposed adjacent to the propagation mode conversion region on the differential line side thereof and suppresses the propagation of a common mode through the differential line. The present technology can be applied to, for example, a differential line conversion structure used in a millimeter-wave radar.
Owner:SONY GROUP CORP
Simulation scanning method for guiding routing angles of adjacent layers
PendingCN121413558ACAD circuit designSpecial data processing applicationsDifferential lineAngular scan
The invention relates to a simulation scanning method for guiding the routing angle of adjacent layers, and the method comprises the steps: building a transmission line model containing two pairs of differential lines with the vertical projections of the adjacent layers coinciding, setting a center coordinate, controlling the two pairs of differential lines to rotate reversely at the same value, scanning the angle, obtaining crosstalk data of different angles through simulation, and improving the amplitude. Therefore, the wiring angle design of adjacent layers is guided. According to the method, two pairs of differential lines of adjacent layers are set as reverse same-value rotation variables, the angle difference and a single variable are associated, control is simplified, and traceability is achieved; a projection center is used as a rotation reference, so that accurate control and reliable simulation are guaranteed; crosstalk data are obtained through angle scanning, quantization limitation is broken through, and efficiency is improved; the data shows that the difference is improved, the optimal angle is selected by combining the assistance with the space limitation, crosstalk exceeding or space waste is avoided, and experience dependence is got rid of.
Owner:EMDOOR ELECTRONICS TECH
A method for compensating a channel pair for an in-plane offset of a differential via
ActiveCN115758988BCAD circuit designSpecial data processing applicationsDifferential lineDifferential phase
The application discloses a method for compensating internal skew of a differential via channel, comprising the steps of: calculating skew time between differential signals; using obtained material parameters to establish a model of a PCB and a differential via; simulating the established high-precision differential model to obtain S parameters of the differential via structure through simulation; obtaining S parameters and differential internal skew values of a design measurement to calibrate a scale factor of 3D modeling; optimizing stub length difference h in the differential via structure; comparing whether the optimization result meets a design allowed differential internal skew target value, if yes, optimization is completed, and if not, stub length difference h is continuously optimized. The application occupies small layout and wiring space, and the proposed differential via structure compensates for skew of differential phase in time, effectively avoiding the influence of internal skew.
Owner:无锡市同步电子科技股份有限公司
Circuit board and solid state drive
This utility model relates to the field of circuit board packaging technology, and in particular to a circuit board and a solid-state drive. The circuit board provided by this utility model sets high-speed differential line pairs as inner layer traces, and uses vias / through holes through the pads of the high-speed differential lines to electrically connect the high-speed connector and the controller. Since the vias / through holes only need to pass through the pads, the number of wiring layers through which the vias / through holes pass is greatly reduced, which makes it possible to use back drilling process to better reduce the number of residual posts and shorten the length of residual posts, effectively reduce signal reflection or crosstalk, and improve signal quality.
Owner:DAPUSTOR CORP
N-way coupler and chip including the same
PendingUS20260100493A1Multiple-port networksLogic circuit coupling arrangementsDifferential lineHemt circuits
A coupler includes a plurality of unit circuits connected to a plurality of differential line pairs and a single-ended line; and a plurality of isolation resistors connected between the plurality of differential line pairs, wherein each unit circuit of the plurality of unit circuits includes: a transformer including a primary side connected to one differential line pair among the plurality of differential line pairs, and a secondary side connected to the single-ended line, and a secondary-side capacitor connected in parallel to the secondary side.
Owner:SAMSUNG ELECTRONICS CO LTD
Transition resistance-resistant semi-decoupling multi-terminal differential line fault positioning and distance measuring method
PendingCN121476819AFault location by conductor typesInformation technology support systemSingular value decompositionDifferential line
The invention discloses an anti-transition resistance semi-decoupling multi-terminal differential line fault positioning and distance measuring method, belongs to the field of power system relay protection, and solves the problems of complex calculation, weak anti-transition resistance and difficult equipment upgrading caused by multi-terminal data coupling in the existing method. The method comprises the following steps: S1, calculating a distance ratio based on local side voltage and current, and preliminarily positioning a fault branch; s2, constructing an equation containing transition resistance R and fault impedance ZL-1, and generating a transition resistance matrix r and a fault impedance matrix z (dimensionality is adaptive to CPU computing power); s3, denoising through a Hankel matrix and singular value decomposition to obtain an accurate sequence; and S4, verifying the sequence consistency within 20-40ms after the fault, and outputting a result or repositioning. The method is free of iteration and high in transition resistance resistance, the complexity is linearly improved along with the number of T-connection terminals, hardware computing power and old equipment upgrading are adapted, and the method is suitable for a new energy T-connection multi-terminal network.
Owner:JIANGSU JINZHI SOFTWARE CO LTD
Differential duplexer systems with phase shifters
A communication device includes a duplexer differentially coupled to a receiver and a transmitter. The duplexer may include phase shifters on the differential lines to provide differential received signals to the receiver and receive differential transmission signals from the transmitter for transmission. For example, the phase shifter are positioned such that single-ended received signals may be converted to differential received signals and convert the differential transmission signals to single-ended transmission signals for transmission. Moreover, the phase shifters may provide the single-ended transmission signals to antennas for transmission and to the differential lines of the receiver for cancellation / isolation. Furthermore, the phase shifters may provide the differential received signals to the receiver for reception and provide the single-ended received signals to the differential lines of the transmitter for cancellation / isolation. Accordingly, the duplexer may convey communication signal while reducing signal interference by providing improved isolation.
Owner:APPLE INC
System and method for l-shape differential line routing
PendingUS20250393122A1Printed circuit aspectsElectrical connection printed elementsSignal routingDifferential line
Systems and methods are disclosed for routing differential communication lines to different integrated circuits based on printed circuit board (PCB) unit variants. In one example, a system for routing signals comprises a location for mounting either a first resistor or a second resistor and another location for mounting either a third resistor or fourth resistor, the location for receiving either the first resistor or the second resistor being shaped such that, when populated with the first resistor, the first resistor is in a first orientation, and when populated with the second resistor, the second resistor is in a second orientation perpendicular to the first orientation.
Owner:HARMAN INT IND INC
Domain controller PCIe signal layout wiring method, PCB and vehicle
PendingCN121706709ACAD circuit designSpecial data processing applicationsDifferential lineIn vehicle
The invention discloses a domain controller PCIe (Peripheral Component Interconnect Express) signal layout and wiring method, a PCB (Printed Circuit Board) and a vehicle. The method comprises the following steps: setting a standard impedance value of a PCIe 3.0 wire to be 80 omega, and setting the length of the PCIe 3.0 wire to be within 3000 mils; wiring of PCIe3.0 routing is set to be inner-layer routing, the routing width is 5.6 mil, and the distance between differential lines is 5.4 mil. According to the method disclosed by the invention, the layout and the wiring of the PCIe3.0 routing are limited in various aspects, so that the layout and the wiring of the PCIe3.0 routing can well cope with a complicated vehicle-mounted environment, and effective transmission and processing of the PCIe3.0 signal are ensured. And the reliability of the corresponding PCB is improved. And furthermore, the reliability and the safety of the whole vehicle are improved. The invention is mainly used in the technical field of vehicles.
Owner:CHINA FAW CO LTD
Differential signal test system and method for detecting differential line performance
The invention relates to the field of differential line performance detection, in particular to a differential signal testing system and method for detecting differential line performance, and the method comprises the steps: enabling collected data of a pressure sensor and a temperature sensor to pass through a time domain branch based on an LSTM-KAN architecture, so as to generate a multi-time scale fusion clamping feature; obtaining differential signal frequency domain data of a vector network analyzer test differential line, and generating multiband fusion differential line performance characteristics through a frequency domain branch based on an LSTM-KAN architecture; and passing the multi-time scale fusion clamping features and the multi-band fusion differential line performance features through a regression head based on a cross-modal attention mechanism architecture to generate a comprehensive differential line quality grade. According to the invention, the fluctuation characteristics of the differential line clamped by the test fixture are accurately extracted, the defect characteristics of the multi-band differential line are accurately extracted, and the test accuracy of the performance of the differential line is improved.
Owner:嘉兴翼波电子有限公司
Printed circuit board and electronic equipment
The invention discloses a printed circuit board and electronic equipment, and the printed circuit board comprises a multi-layer board and a differential wire. The multi-layer board is provided with a signal via hole, and the signal via hole penetrates through the multi-layer board; the differential wires comprise a first differential wire and a second differential wire, the first differential wire and the second differential wire are located on different laminates, and the first differential wire is electrically connected with the second differential wire through a pair of signal via holes; the pair of signal via holes comprises a first signal via hole and a second signal via hole, and at least one isolated metal piece is arranged between the first signal via hole and the second signal via hole. The structural arrangement of the printed circuit board can reduce the inductive jump of the differential impedance of the differential wire at the position of the signal via hole, and facilitates the optimization of the overall impedance uniformity of the differential channel.
Owner:BEIJING CO WHEELS TECH CO LTD
Modular equipment bus system based on 485 serial port
The utility model relates to the technical field of modularized equipment communication, in particular to a modularized equipment bus system based on a 485 serial port, which comprises host equipment and slave equipment. The host device comprises a first microcontroller (an integrated serial port and a timer), a first 485 transceiver and a host side auxiliary logic circuit. And the logic circuit is connected with the timer output and the serial port sending end, and controls the sending enabling of the first 485 transceiver. And the slave equipment comprises a second microcontroller and a second 485 transceiver. And the 485 transceivers of the host equipment and the slave equipment are connected through a differential line. According to the utility model, the combination of the MCU serial port, the DMA, the timer, the 485 and the auxiliary logic is utilized, the bus communication with high speed, interference resistance, low cost and strong universality is realized, and the bandwidth is easy to expand.
Owner:CHENGDU EBYTE ELECTRONICS TECH CO LTD
Shielded differential cable
The application provides a shielded differential cable, which can be used for high-speed signal transmission and has a top adhesive tape, a bottom adhesive tape and a plurality of differential wire bundles. The plurality of differential wire bundles are adjacent and have substantially equal heights, so that the top adhesive tape and the bottom adhesive tape can be respectively adhered to the top surfaces and the bottom surfaces of the plurality of differential wire bundles in a substantially flat manner. The plurality of differential wire bundles are positioned by the top adhesive tape and the bottom adhesive tape, and the top adhesive tape, the bottom adhesive tape and the plurality of differential wire bundles are similar to FPC flat cable, so that the plurality of differential wire bundles can be easily arranged, aligned and connected in limited space.
Owner:HARUMOTO TECHNOLOGY (SHEN ZHEN) CO LTD
Receiver, digital isolator and disconnection protection method thereof
PendingCN121907227AFail-safe circuitsLogic circuit coupling/interface arrangementsPower-on resetDifferential line
The invention discloses a receiver, a digital isolator and a disconnection protection method thereof. The digital isolator includes a transmitter and a receiver connected via a differential line. The receiver comprises an amplifier, an envelope detector and a driver which are connected in sequence, and the envelope detector is configured to perform envelope detection on a differential input signal received by the receiver so as to generate a corresponding envelope signal; the switch module is configured to control the on-off state of an input signal path of the envelope detector; and the broken line protection module is used for detecting the line fault of the differential line according to the signal change of the envelope signal in different on-off states during the power-on reset period, and stopping providing the output signal when the line fault exists in the differential line.
Owner:3PEAK INC
PCB differential line wiring method, design method and PCB
The embodiment of the invention discloses a PCB differential line wiring method, a design method and a PCB, and relates to the technical field of PCBs, through different-layer wiring of differential lines, the wiring space is saved, the wiring pressure of a BGA area is reduced, rapid coupling of the differential lines is carried out in a vertical coupling mode, and the coupling effect of the differential lines is higher. The embodiment of the invention provides a PCB differential line wiring method, a PCB at least comprises a first differential line, and the method comprises the steps: carrying out the fan-out wiring of the first differential line in a middle layer of the PCB, and carrying out the fan-out curved wiring of the first differential line around a wiring bonding pad in a spherical grid array region based on a principle that the first differential line does not enter a bonding pad distribution forbidding region.
Owner:MAIPU COMM TECH CO LTD
Electrical connector and electronic device
The application discloses an electric connector and electronic equipment, comprising a plug and a socket, the plug comprises a first shielding member and a plurality of first connecting members, the first shielding member is provided with a plurality of first holes, and the plurality of first connecting members are matched in the plurality of first holes one by one to realize shielding isolation of adjacent two first connecting members; the socket comprises a second shielding member and a plurality of second connecting members, the second shielding member is provided with a plurality of second holes, and the plurality of second connecting members are matched in the plurality of second holes one by one to realize shielding isolation of adjacent two second connecting members; when the plug and the socket are plugged and matched, the plurality of first connecting members and the plurality of second connecting members are electrically connected one by one, and the first shielding member and the second shielding member abut against each other. The electric connector can realize crosstalk shielding isolation between differential lines, improve the crosstalk problems of far ends and near ends between the differential lines, and improve the quality and stability of signal transmission.
Owner:ZHUHAI LINKE TECH CO LTD
A motor control method and device, computer equipment and storage medium
ActiveCN115242137BEnables direct accelerated startupshorten the timeSingle motor speed/torque controlStarter arrangementsDifferential lineControl signal
This invention provides a motor control method, apparatus, computer equipment, and storage medium. The method includes: when the motor controller restores power, obtaining the current phase value, current rotation direction, and speed of the target motor by detecting the differential line voltage signal of the two phases of the target motor; filtering and rectifying the differential signal to obtain a square wave signal; determining the frequency value of the square wave signal and determining the current speed of the target motor based on the frequency value of the square wave signal; generating a control signal based on the current speed, current rotation direction, and current phase value, and using the control signal to control the target motor to accelerate and start. The motor control method, apparatus, computer equipment, and storage medium provided by this invention can process the differential signal to obtain a square wave signal, and achieve direct acceleration and start of the target motor based on the current phase value, current rotation direction, and speed determined by the square wave signal, saving significant time and resources.
Owner:北京中科九微科技有限公司
PCB electrical performance test system based on multi-channel signal feedback
PendingCN122017527AElectronic circuit testingResistance/reactance/impedenceDifferential lineTime domain
The invention relates to the technical field of electrical measurement, in particular to a PCB (printed circuit board) electrical performance test system based on multichannel signal feedback, which comprises a data acquisition unit used for acquiring impedance deviation of a plurality of differential wire pairs on a printed circuit board through multichannel time domain reflection test. And the data screening unit is used for screening effective impedance deviation related to dielectric layer thickness fluctuation from the impedance deviation of the plurality of differential line pairs. And the model construction unit is used for constructing a lamination alignment error model based on the effective impedance deviation and the spatial position information of the differential line pair corresponding to the effective impedance deviation on the printed circuit board. And the process optimization unit is used for determining process compensation parameters according to the lamination alignment error model and the newly obtained impedance deviation of the printed circuit board, and outputting adjustment guidance for subsequent design or manufacturing of the printed circuit board according to the process compensation parameters. According to the method, the impedance change of the PCB caused by the thickness fluctuation of the dielectric layer can be accurately identified, and a basis is provided for process optimization.
Owner:HUIZHOU LIANDAJIN ELECTRONICS CO LTD
Differential circuit structure capable of resisting common-mode interference, PCB (Printed Circuit Board) and filter
The utility model provides an anti-common-mode-interference differential circuit structure, a PCB circuit board and a filter. The differential circuit structure resistant to common-mode interference comprises a pair of differential signal input ends and a pair of differential signal output ends which are arranged on a PCB, and a convolution circuit structure is arranged between the differential signal input ends and the differential signal output ends. The convolution circuit structure is used for generating a superposed magnetic field when a common-mode interference signal is generated between the differential signal input end and the differential signal output end so as to filter the common-mode interference signal.
Owner:ANYSMART TECH CO LTD
Synchronous counting system and method for applying USB differential line to RS485 signal transmission
The invention provides a synchronous counting system and method for applying a USB (Universal Serial Bus) differential line to RS485 signal transmission. The system comprises a host CPU (Central Processing Unit), a first USB, a second USB, an RS485 and a slave CPU, the host CPU is a signal transmitting end; the first USB refers to a sending interface of a host sending end; the second USB is a receiving interface of the slave receiving end; the RS485 is a device which can be identified by the slave computer after the receiving end obtains the data signal and carries out signal conversion; the slave CPU is a signal receiving end; the data transmission direction is that the USB protocol data and the RS485 protocol data are transmitted to the slave CPU from the host CPU through the first USB by using the USB3.0 data line and then through the second USB. By using the USB differential signal line and the RS485 protocol of the method, the interference and delay of signal transmission are effectively reduced, the counting accuracy is improved, and the real-time synchronization of control signals is ensured. And the stability and the reliability of the system are improved.
Owner:INGENIC SEMICON CO LTD
A 50g error code instrument test board
The utility model provides a 50G error code appearance test board of high speed circuit design and PCB engineering application technical field, include: one layer auxiliary signal layer, one layer auxiliary ground layer, be located in the top of auxiliary signal layer, one layer power supply layer, be located in the top of auxiliary ground layer, be connected with auxiliary ground layer through high frequency decoupling capacitor, one layer high speed signal inner layer, be located in the top of power supply layer, one layer complete ground layer, be located in the top of high speed signal inner layer with auxiliary ground layer is connected, one layer high speed signal surface layer, be located in the top of complete ground layer with one error code appearance test chip, a plurality of differential microstrip line, a plurality of differential line, a plurality of high speed connector, one decoupling capacitor array, one terminal capacitance resistance, one ground via array, one shield GND copper skin and one power module are equipped. The utility model has the advantages of: greatly promoted the signal integrity of error code appearance, test sensitivity and measurement accuracy.
Owner:CHENGDU ZHONGKE SUPER MICRO OPTOELECTRONICS TECHNOLOGY CO LTD +1
PCB differential line equal-length wiring method based on AD software
PendingCN121615589ACAD circuit designSpecial data processing applicationsDifferential lineAmplitude reduction
The invention provides a PCB differential line equal-length wiring method based on AD software. The method comprises the following steps of S1, AD item configuration and multi-dimensional parameter presetting, S2, AD script development and differential pair intelligent identification grouping, S3, AD priority dynamic wiring and line length real-time feedback, and S4, line length optimization and verification of AD simulation driving. Through linkage of script development and simulation functions of AD software, the method has the following beneficial effects: the differential line identification and grouping time is shortened from 4 hours to 8 minutes, and the wiring efficiency is improved by 96.7%; the wire length error is controlled within 3 mil, and the precision is improved by 66.7% compared with manual wire checking; the AD priority wiring rule avoids signal channel preemption, the clock signal crosstalk amplitude is reduced by 55%, and the 10Gbps signal transmission error rate is reduced to below 10; the DRC verification passing rate is improved to 100% from 75% of a traditional method, and the later plate changing cost is reduced by 80%.
Owner:江西晓明智能科技有限公司
Coupler and chip
PendingCN121841341AMultiple-port networksLogic circuit coupling arrangementsDifferential lineHemt circuits
A coupler and a chip are provided. The coupler includes: a plurality of unit circuits connected to a plurality of differential line pairs and a single-ended line; and a plurality of isolation resistors connected between the plurality of differential line pairs, in which each of the plurality of unit circuits includes: a transformer including a primary side and a secondary side, the primary side being connected to one of the plurality of differential line pairs, the secondary side being connected to a single-ended line; and a secondary side capacitor connected in parallel to the secondary side.
Owner:SAMSUNG ELECTRONICS CO LTD
Differential pair automatic wiring method and device
The invention discloses a differential pair automatic wiring method and device, and relates to the technical field of printed circuit boards, and the method comprises the steps: obtaining a target differential impedance, and taking the target differential impedance as an impedance constraint to calculate a line width and a gap; pairing a plurality of first connection terminals in the first network and a plurality of second connection terminals in the second network to obtain a plurality of connection terminal pairs; for each connection terminal pair, determining a plurality of candidate merging points corresponding to the connection terminal pair; according to a path cost minimization principle, selecting a target merging point from a plurality of candidate merging points corresponding to each connection terminal pair for each connection terminal pair; performing automatic wiring on the plurality of target merging points corresponding to the plurality of connection terminal pairs to obtain a central path; and on the basis of the line width and the gap, the central path is decoupled to obtain the first differential line and the second differential line, so that the high efficiency and the reasonability of differential pair wiring are improved.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
A corner connector
ActiveCN119812824Breduce manufacturing costfew partsCoupling contact membersConnections effected by permanent deformationDifferential lineStructural engineering
Owner:CHINA AVIATION OPTICAL ELECTRICAL TECH CO LTD
Ball grid array package structure and PCB board ensuring impedance continuity
ActiveCN224329627UReduce signal reflectionreduce riskPrinted circuit detailsDifferential lineControl signal
The utility model discloses a kind of ball grid array packaging structure and PCB of guaranteeing impedance continuity, by the asymmetric spacing of control signal unit and two side ground unit, so that signal unit is offset to one side ground unit, the trace channel of the other side of signal unit is widened, the trace channel of widened not only can double trace, but also can be with thicker line width, so that the characteristic impedance of differential line is consistent on signal transmission path, significantly reduce signal reflection and waveform distortion risk, especially suitable for high-frequency, high-speed signal transmission scene, can ensure signal integrity.
Owner:EMDOOR ELECTRONICS TECH
Method and system for detecting cable seal lead structure
This invention relates to the field of cable inspection technology, and proposes a method and system for inspecting cable lead-sealed structures. The method involves applying an excitation signal to a sensor array deployed on the lead-sealed structure of the cable to be inspected, acquiring the differential induced signal generated by the cable lead-sealed structure under the excitation magnetic field, preprocessing it, and constructing an image of the conductivity distribution of the lead-sealed structure cross-section for defect location, quantitative identification, and condition assessment. Based on magnetic induction tomography, the internal conductivity characteristics of the cable lead-sealed structure are visualized, thereby completing defect location, quantitative identification, and overall condition assessment. Furthermore, the sensor array is configured as multiple differential coil units, with symmetrical anti-phase series induction coils on both sides of the excitation coil of each differential coil unit, effectively suppressing environmental common-mode interference and retaining only useful signals from defects, thus improving the ability to identify weak defect signals. This effectively improves the accuracy, reliability, and early warning capability of cable lead-sealed structure inspection.
Owner:XI AN JIAOTONG UNIV
Differential line impedance adjusting method and display panel
The invention relates to an impedance adjusting method of a differential line and a display panel. The impedance adjustment method of the differential line comprises the following steps: acquiring eye pattern data of the differential line between a driving circuit and a flexible circuit board in the display panel; determining the target impedance of the differential line according to the eye pattern data; according to the target impedance, the target resistance value of an adjustable resistor connected with the differential line in parallel and the target capacitance value of an adjustable capacitor connected with the differential line in parallel are determined, and the impedance of the differential line under the target resistance value and the target capacitance value is the target impedance; the resistance value of the adjustable resistor is adjusted to be the target resistance value, and the capacitance value of the adjustable capacitor is adjusted to be the target capacitance value. According to the invention, the technical problem of poor data transmission quality caused by impedance of the differential line is solved.
Owner:CHANGSHA HKC OPTOELECTRONICS CO LTD +1