237 results about "Line pair" patented technology

An integrated circuit device may include a pair of first and second input/output lines on a substrate and a precharge circuit connected to the first and second input/output lines. More particularly, portions of the first and second input/output lines may extend in a parallel direction along first lengths thereof, portions of the first and second input/output lines may cross one another in a twist region so that portions of the first and second input/output lines in the twist region extend in directions different than the parallel direction, and portions of the first and second input/output lines may extend in the parallel direction along second lengths. Accordingly, relative positions of the first and second input/output lines may be reversed in the first and second lengths thereof. In addition, the precharge circuit may be connected to portions of the first and second input/output lines in the twist region extending in the directions different than the parallel direction, and the precharge circuit may be configured to provide that the first and second input/output lines have a same electrical potential responsive to an enable signal. Related memory devices are also discussed.

Apparatus for transmitting a digital signal within, for example, an integrated circuit includes a signal transmission line with a directional coupler at one or both ends. The directional coupler blocks the direct-current component of the digital signal while transmitting the alternating-current component, including enough higher harmonics to transmit a well-defined pulse waveform. A suitable directional coupler consists of two adjacent line pairs in materials with different dielectric constants. The apparatus may also include a driver of the inverter type, a receiver of the differential amplifier type, a terminating resistor, and a power-ground transmission line pair for supplying power to the driver. An all-metallic transmission-line structure is preferably maintained from the output interconnections in the driver to the input interconnections in the receiver.

A structure and method are provided for self-test of a Z axis sensor. Two self-test current lines are symmetrically positioned adjacent, but equidistant from, each sense element. The vertical component of the magnetic field created from a current in the self-test lines is additive in a flux guide positioned adjacent, and orthogonal to, the sense element; however, the components of the magnetic fields in the plane of the sense element created by each of the two self-test current line pairs cancel one another at the sense element center, resulting in only the Z axis magnetic field being sensed during the self-test.

A technology for recognizing one or more quadrangles from an input image is disclosed. Edge areas are detected from the input image, lines corresponding to the edge areas are extracted, a line pair selected from the extracted lines is categorized according to a positional relationship between two lines included in the line pair, a line pair evaluation value is calculated for the line pair, a combination of two line pairs is selected, a quadrangle is generated from four lines included in the two line pairs selected, a quadrangle evaluation value is calculated for the quadrangle based on the categories and the line pair evaluation values of the two line pairs forming the quadrangle, and a quadrangle is selected based on the calculated quadrangle evaluation value.

A driving circuit according to an embodiment of the invention includes: a switching unit for sequentially switching between a first operation of applying a positive gray-scale voltage to odd-numbered data lines and applying a negative gray-scale voltage to even-numbered data lines and a second operation of applying a negative gray-scale voltage to odd-numbered data lines and applying a positive gray-scale voltage to the even-numbered data lines; a plurality of short-circuit switches for short-circuiting a pair of adjacent odd-numbered data lines and a pair of adjacent even-numbered data lines to produce a plurality of pairs of short-circuited data lines in a switching period between the first operation and the second operation; and a plurality of common node-connected switches corresponding to the plurality of data line pairs and short-circuiting a corresponding one of the data line pairs to a common node.

Techniques for identifying one or more quadrilaterals from an input image are disclosed. detecting an edge area from an input image, extracting a line corresponding to the edge area, classifying a line pair selected from the extracted lines according to a positional relationship between two lines included in the line pair, calculating a line pair evaluation value for the line pair, A combination of two wire pairs is selected, a quadrilateral is generated from the four wires included in the selected two wire pairs, a quadrilateral evaluation value is calculated for the quadrilateral based on the classification and pair evaluation values ​​of the two wire pairs forming the quadrilateral, and based on the calculated The quadrilateral evaluation value selects the quadrilateral.

The invention discloses a method and a device for automatically splicing image sequences and a splicing system. The method for automatically splicing the image sequence mainly comprises: a step of detection used for detecting organization edges of adjacent images; a step of selection used for computing the similarity of the organization edge lines of the detected adjacent images, and selecting the edge line pair meeting a similarity threshold as an optimized edge line pair; and a step of acquiring splicing positions, namely determining the splicing displacement of the adjacent images in a horizontal direction and in a vertical direction according to the selected optimized edge line pair to determine the splicing positions in the horizontal direction and the vertical direction, wherein the splicing of the adjacent images is realized according to the acquired splicing positions. The method and the device are simply implemented and can effectively splice medical image sequences.

The invention discloses a multi-line pairing method and device and a multi-line system. The multi-line pairing method includes the following steps: a fresh air machine and an indoor unit, which need to be paired, in the multi-line system are electrified to be connected into a network of the multi-line system, and the indoor unit, connected into the network of the multi-line system, in the multi-line system is searched; information of the searched indoor unit is returned, the search result is displayed on a line controller of the fresh air machine for searching; the searched indoor unit is paired with the fresh air machine for searching according to received pairing commands. System interior search is carried out through the fresh air machine, and the searched indoor unit is paired with the fresh air machine. The steps of manually inquiring the indoor unit and manually inputting the address of the paired indoor unit through the line controller are omitted, and the method of automatic search and automatic pairing according to the searched address of the indoor unit is adopted, so that operation is simple, pairing is accurate, and the linkage setting efficiency of the fresh air machine and the indoor unit is high.

The invention relates to a high speed parallel symmetrical data cable, and belongs to the technical field of signal transmission cables. The data cable comprises at least a pair of line pairs and an outer sheath. Each pair of line pairs comprises a first conductor core and a second conductor core; the first core comprises a first conductor and a first insulating layer extruded and wrapped outside the first conductor; the second conductor core comprises a second conductor body and a second insulating layer extruded and wrapped outside the second conductor body; the first conductor core and the second conductor core are leaned mutually and parallel in the length direction; each line pair is externally wrapped with a first screening layer; and the outer sheath is positioned outside the first screening layer. The invention has the advantages that an uneven interval generated by pair twinning in the prior art is eliminated; the consistent distance between the first conductor core and the second conductor core is ensured; and the ideal characteristic impedance of the first conductor core and the second conductor core is ensured, so that the attenuation and the loop loss are effectively reduced.

The invention discloses a system, a device and a method for testing a power over Ethernet (POE) function. The system comprises tested power sourcing equipment (PSE) ports and a power over Ethernet (POE) function test device, wherein the tested PSE ports connect Ethernet line pairs carrying data signals and electric signals with corresponding ports of the POE function test device respectively; and the POE function test device has ports and transformers, is used for connecting all the Ethernet line pairs which are led in through the ports with corresponding transformers respectively, and separates the electric signals and the data signals through the transformers. The system, the device and the method are compatible with test on the POE function of the Ethernet PSE having different power supply schemes and also compatible with test on POE function of the Ethernet PSE of gigabytes and megabytes, and have the advantages of low cost and simple operation.

A stereo disparity calculating unit calculates the predicted value of the stereo disparity. A line extracting unit performs line extraction in an image. A line classification unit classifies the extracted lines into different line types. A meaningless line eliminating unit eliminates lines not existing in the real world away from the following processing. A stereo disparity correcting unit corrects the predicted value of the disparity based on the line pairs determined by the line pair determining unit. A line pair clustering unit clusters all the line pairs belonging to the same feature as one cluster. A plane combining unit finds out the location relationship in the three-dimensional space among all the planes of each feature extracted by a plane extracting unit, and generates a three-dimensional model describing the overall structure for each feature.

The embodiment of the invention provides far end crosstalk channel estimation method and device. The far end crosstalk estimation method is used for estimating far end crosstalk channels of a first line and a second line in a two-line pair scene and characterized by comprising the following steps of: independently activating the first line and acquiring line noise of the first line as first line noise; activating the first line and the second line and acquiring line noise of the first line as second line noise; and determining the far end crosstalk channel of the second line to the first line as follows: (the first line noise-the first line noise)/the transmitted power spectrum density of the second line, wherein the transmitted power spectrum density of the second line is known. The method and the device of the embodiment does not need additional test equipment and the collection of a great deal of statistical information for a long time and can rapidly estimate the far end crosstalk channel of an RT (Remote Terminal) line to a CO (Central Office) line in the two-line pair scene and a multi-line-pair scene by simple circuit control operations.

The embodiment of the invention discloses an activating method for newly adding line pairs into an XDSL system and an apparatus thereof. The method includes: constructing an initial pilot frequency sequence, according to crosstalk offset coefficients between the line pairs in the process of data transmission and the number of the newly added line pairs; estimating the crosstalk offset coefficients of the newly added line pairs on the line pairs in the process of data transmission, according to the initial pilot frequency sequence; constructing an augmentation pilot frequency sequence on the basis of the initial pilot frequency sequence, according to the crosstalk offset coefficients of the newly added line pairs on the line pairs in the process of data transmission; estimating crosstalk offset coefficients of the line pairs in the process of data transmission on the newly added line pairs, according to the augmentation pilot frequency sequence; and activating the newly added line pairs to be on lines and proceeding to the data transmission stage. The method and the apparatus of the invention is suitable for activating the newly added line pairs in the XDSL system to be on the lines.

The invention discloses a method for automatically registering cloud data of laser dots based on three-dimensional line characters. The method comprising the steps that a line characteristic set is extracted from the cloud data of the laser dots from each site for two adjacent sites; two arbitrary nonparallel space-straight-lines are regarded as a straight line pair, and the included angle and the vertical distance of the straight line pair are regarded as two rotation invariants for any site of the two adjacent sites; when the rotation invariants are eligible, the referenced straight line pair and the straight line pair to be registered become a pair of candidate straight line pair of the same name; c initial transform relations are respectively calculated by c pairs of candidate straight line pair of the same name, one initial transform relation is chosen to be the optimal initial transform relation, and all the straight line pairs of the same name of the site to be registered and the referenced site are calculated; the transform relation between the site to be registered and the referenced site is calculated by all the straight line pairs of the same name. The method disclosed by the invention utilizes the linear characters comprised in a target object to automatically register the cloud data of the laser dots without a target and acquire a three-dimensional data model of high quality.

A method and a system for finishing blue teeth on-line pair program, in which, the system includes at least two blue teeth devices and a central control device. These blue teeth equipments are connected with the central control device in wire which searches for information of the equipments to all blue teeth equipments, such as their address(BD-ADDR), varieties and on-line mode and judges the possible formed on-line pairs from the information and generates a link key for each pair, finally, it writes information of link key and each object into each blue tooth equipment.

The invention belongs to the fields of biomedical engineering and computers and relates to a method for accurately measuring a modulation transfer function (MTF) of a digital X-ray imaging system. The method comprises the steps of: placing a simulated fat body, collecting a plurality of images, and calculating a noise power spectrum of integral noises of the system; placing a lead plate for covering a detector, acquiring a plurality of images and calculating an electronic noise power spectrum of the system; placing a line pair card, collecting a plurality of images, and overlaying and averaging all the images to obtain an average image of the line pair card; acquiring a strength profile map by means of the average image of the line pair card, and calculating an MTF value corresponding to an integer spatial frequency of the line pair card; and calculating the noise power spectrum and a related coefficient eta of the MTF by utilizing a linear regression method to obtain an MTF change curve of the imaging system under a spatial frequency range. The method provided by the invention can be used for realizing the accurate measurement of the MTF of the digital X-ray imaging system and provides powerful conditions for further and all-around evaluation of the performance of the radiological imaging system.

A semiconductor memory device includes ports, data line pairs, where each port associated with one of the data line pairs, sets of address lines, where each port associated with one of the sets of address lines, a shared memory region of a memory cell array, where the shared memory region accessible through the ports, an access controller coupled to the ports and configured to generate an access selection signal in response to a plurality of control signals received through the ports, and an access router coupled to the shared memory region, the data line pairs, and the sets of address lines, the access router configured to selectively couple one of the sets of address lines and one of the data line pairs to the shared memory region in response to the access selection signal.

The method includes following steps: step S202 detects link state of each physical port in DSL device with multiple line pairs; when one or multiple links in physical port of DSL device with multiple line pairs occur fault, step 204 resets corresponding physical port of DSL device with multiple line pairs in order to restart link building. The invention effectively solves issue that under mode of DSL multiple line pairs, link cannot be built for long time caused by synchronization loss between line pairs.

The invention discloses a door positioning method under home environment based on binocular vision target detection. The method comprises the following steps: obtaining an image through a binocular vision camera; capturing an image and obtaining a binary image; obtaining a possible door frame line segment sequence; finding matched line segment pairs in left and right images; obtaining an optimal matched line segment pair queue through global optimal matching principle; obtaining a suspected door line pair according to distance of actual lines corresponding to the matched line segment pair; and obtaining suspected door optimal solution through the feature integral principle, and realizing door positioning. The technical scheme adopts binocular vision to identify double frames of a door through an efficient algorithm, thereby realizing door positioning under the home environment; and the method has the advantages of low cost, convenient and flexible use and wide application scene.

The invention relates to a method for transmitting power and universal serial bus (USB) signals based on Ethernet cables. The method comprises the following steps : an idle line pair in the Ethernet cables comprising four line pairs is coupled to a power transmission system, and another idle line pair is coupled to a communication system of the USB, and the line pairs supply power and communication signal transmission trackways to terminal equipment. After adopting the proposal, front end terminal equipment serial-communicates with rear end terminal equipment by the idle line pairs in the Ethernet cables, and the rear end terminal equipment supplies power to the front terminal equipment by the idle line pairs in the Ethernet cables, therefore, the front terminal equipment does not need field power supplying.

The invention belongs to the digit image processing technical field, and discloses a fingerprint image splicing method based on regression line characteristics and a TPS deformation model; the methodcomprises the following steps: respectively extracting detail points of two to-be-spliced small area fingerprint images, carrying out registering for the detail points pair after pair, thus obtainingthe detain point pair with the highest similarity fraction; calculating the rotary translation parameter for the primary registering, thus obtaining the primarily spliced fingerprint image; solving arefinement image of the two to-be-spliced small area fingerprint images; using a N neighborhood block method to search a matching regression line of an overlapping area of the refinement image, and searching the matched regression line pair; introducing the TPS deformation model, correcting elastic deformation of the fingerprint image in the regression line pair characteristic layer, and carryingout secondary registering so as to obtain the final result of the secondarily spliced fingerprint image. The method uses the detail points for the primary registering, and uses the N neighborhood block method to search matching regression lines of the overlapping area, thus reducing splicing errors caused by wrongly matched detail points.