36results about How to "Line length" patented technology

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts correspond to successive cross sections of the three-dimensional article, the method comprising the steps of: providing a model of the at least one three-dimensional article; applying a first powder layer on a work table; directing a first energy beam from a first energy beam source over the work table causing the first powder layer to fuse in first selected locations according to corresponding models to form a first cross section of the three-dimensional article, where the first energy beam is fusing at least a first region of a first cross section with parallel scan lines in a first direction; varying a distance between two adjacent scan lines, which are used for fusing the powder layer, as a function of a mean length of the two adjacent scan lines.

The invention relates to the technical field of the physical design of a large-sized integrated circuit, in particular to an obstacle bypassing wiring method based on the optimization of shortest wire length in the large-sized integrated circuit design. The method comprises the steps: establishing a wiring question map according to an escape map theory, marking top points, i.e., necessary points by adopting a multi-source parallel search method, establishing a feasible solution steiner tree on the basis of a necessary point set, and finally optimizing the feasible solution. The method is reasonable in wiring layout, the obtained wire length is short, and the wiring effect is good.

Provided is an optical coupling structure including an optical semiconductor element including a light receiving/emitting portion, an optical transmission path having an optical axis that intersects the optical axis of the optical semiconductor element at a predetermined angle, and an optical coupling portion configured to convert the optical path between the optical semiconductor element and the optical transmission path and optically couple them. The optical coupling portion is made of a resin that is transparent with respect to a transmitted light, the resin adhering to both at least a portion of the light receiving/emitting portion and at least a portion of the end portion of the optical transmission path, and the optical semiconductor element and the optical transmission path are bonded to each other with the resin itself that constitutes the optical coupling portion.

The invention discloses a miniaturized broadband power divider circuit based on spur lines. The circuit includes a first port (1), a second port (2), a third port (3) and an isolation resistor (R1), wherein the isolation resistor (R1) is arranged between the second port (2) and the third port (3), a transmission path from the first port (1) to the second port (2) adopts a microstrip line, a transmission path from a first port (1) to a third port (3) adopts a microstrip line, a first spur line (20) is arranged on the microstrip line of the transmission path from the first port (1) to the second port (2), a second spur line (30) is arranged on the microstrip line of the transmission path from the first port (1) to the third port (3), and the first spur line (20) and the second spur line (30) are used for reducing the size of the power divider, reducing insertion loss and expanding the bandwidth of the power divider. The relative electrical length of the microstrip lines increase based on the spur lines, the actual length is shortened, the size of the power divider is reduced, and stepped impedance lines and branch lines are equivalently introduced to the transmission paths to expand the bandwidth of the power divider, and the power divider is smaller in size than a traditional Wilkinson power divider, and has larger bandwidth and smaller insertion loss.

In an exhaust gas treatment system and a utility vehicle having an exhaust gas treatment system, the exhaust gas treatment system includes a particle reduction unit, a reducing agent tank and a nitrogen oxide reduction unit of a modular design, wherein the reducing agent tank is arranged between the particle reduction unit and the nitrogen oxide reduction unit and extends around a connecting line extending between the particle reduction unit and the nitrogen oxide reduction unit, and in a utility vehicle, the associated exhaust gas treatment system is arranged within a predefined cuboid envelope volume on a support structure which is attached to a frame member of the vehicle.

An amplifier according to the principle of load modulation comprises a first push-pull transistor, a second push-pull transistor and a balanced hybrid coupler. The first push-pull transistor is configured as a main amplifier and generates a balanced main-amplifier signal. The second push-pull transistor is configured as an auxiliary amplifier and generates a balanced auxiliary-amplifier signal. Outputs of the first push-pull transistor and of the second push-pull transistor are connected to the balanced hybrid coupler in such a manner that the balanced hybrid coupler combines the main-amplifier signal and the auxiliary amplifier signal according to the principle of load modulation to form a balanced output signal.

An optical pickup for recording and reproducing information on a plurality of record media respectively, the pickup has a plurality of light sources corresponding to the plurality of record media; a drive circuit of driving one of the plurality of light sources; switching means of switching a connection between the drive circuit and one of the plurality of light sources; and a control circuit of controlling the drive circuit and the switching means, and wherein: as for transmission line lengths between the switching means and the plurality of light sources, the shorter a wavelength of the light source is, the shorter the transmission line length thereof is.

The present disclosure is directed to a semiconductor die having a chip outline boundary, a die seal, a row of input/output contact pads separated from the chip outline boundary by the die seal, a first row of solder bump connections positioned between the row of input/output contact pads and the die seal, and a second row of solder bump connections separated from the first row of solder bump connections by the row of input/output contact pads.

Provided is a device which can reduce waveform distortion of a laser drive signal caused by impedance mismatching between a laser drive device and a semiconductor laser over a wide band, and which can enhance the power efficiency of higher frequency superposition during reproduction. The output impedance of the laser drive device and the line impedance of a transmission line between the laser drive device and the semiconductor laser are controlled so as to attain impedance matching in a predetermined frequency band. Specifically, the laser drive device is provided thereto with an output impedance control circuit for controlling the output impedance in order to change the impedance of a laser drive device output terminal, depending upon an impedance of the semiconductor laser and an impedance of the transmission line.

The invention discloses a construction method of water-rich red sandstone geological underground water level control. According to the construction method of water-rich red sandstone geological underground water level control, layered excavation is adopted, a set of independent light well point dewatering equipment is arranged on the layer before each layer is excavated, and before the next layeris excavated, the water level of the water-rich red sandstone soil layer is lowered to below 1 meter of the excavated layer through the light well point dewatering equipment on the layer; and the steps are repeated till a foundation pit is excavated to 0.5 m above the designed elevation of a pit bottom, manual excavation is adopted, and the foundation pit is excavated manually to the designed elevation and leveled. According to the construction method, the underground water level of the red sandstone-rich construction area can be effectively controlled, the red sandstone is prevented from being disturbed by the disturbance intensity when encountering water, and meanwhile the construction efficiency is improved.

The invention discloses an FPGA (Field Programmable Gate Array) layout legalization method based on a maximum flow algorithm, and relates to the technical field of FPGAs (Field Programmable Gate Array). The method comprises the following steps of abstracting the initial layout state to establish a residual graph, assigning values to directed edges formed by abstracting the relationship between theillegal nodes and the vacant positions in the residual graph by utilizing the line length to serve as the expenditure of the edges, and solving the residual graph based on a minimum expenditure maximum flow algorithm to obtain legal positions of the illegal nodes, and placing each illegal node to a corresponding legal position to complete layout legalization. The maximum flow algorithm is appliedto the legalization part of the quadratic linear programming algorithm, so that the legalization process which does not have guidance originally becomes guidance, the quality of the final solution isimproved to a certain extent, and the legalized line length is shorter and the layout result is better.

A semiconductor device has peripheral electrode pads formed on the periphery of a semiconductor chip, land pads comprising the first land pads and the second land pads formed on the semiconductor chip, and circuits formed in the semiconductor chip. The peripheral electrode pads are connected to internal circuits by internal lines. The first land pads are connected to the peripheral electrode pads by rewired lines. The second electrode pads, on the other hand, are connected to the internal circuits by internal electrode pads and internal lines, not by the peripheral electrode pads.

The invention discloses an electrocardiograph. The electrocardiograph comprises a main machine and a lead wire, wherein the lead wire comprises a first main wire, a second main wire and a third main wire, and the first main wire, the second main wire and the third main wire separately comprise a connecting section and a spiral section; the connecting section of the second main wire is connected with the host machine through a connector; the connecting section of the first main wire and the connecting section of the third main wire are in series connection on the connecting section of the second main wire; two branch wires are connected to the spiral section of the first main wire; two branch wires are connected to the spiral section of the third main wire; six branch wires are connected tothe spiral section of the second main wire; and electrode buttons are connected to one end of the branch wires. According to the electrocardiograph disclosed by the invention, three groups of main wires are arranged, and separately correspond to the chest lead, the upper limb lead and the lower limb lead of the human body; the three groups of the main wires are spiral, so that when the electrocardiograph is used, the main wires are not liable to enwind, and the using is convenient; and the length can also be adjusted through stretching the corresponding spiral section, and when being used, the electrocardiograph is connected with a disposable electrode through the electrode buttons for usage, so that the electrocardiograph is better in stability, more hygienic and more convenient.

A functional electronics unit for a high current component which is provided for electrical and mechanical connection to a circuit board or to another mechanical carrier substrate for a circuit grouping or circuit, with conductor tracks, conductive surface elements and/or other conductive regions and contacts, the functional electronics unit having electronic components which are designed to measure properties of the electric current flowing through the component or of an electric voltage applied to the component or to perform another electronic functionality, is characterized in that the functional electronics unit is retained on the high current component or on a common carrier. More particularly, the functional electronics unit can be integrated into the high current components and/or can be pushed onto the high current component in a modular fashion or can be fixed on the high current component.

A voltage controlled oscillator with a microstrip line suitable for coarse adjustment of an oscillation frequency band, the voltage controlled oscillator includes a transistor for oscillation that outputs an oscillation signal; a microstrip line formed on a substrate together with the transistor for oscillation, having one end connected to the transistor for oscillation and the other end connected to a ground electrode formed on the substrate, and thus constituting a part of a frequency determining element that determines a frequency of the oscillation signal according to a line length from the one end of the microstrip line to the ground electrode; and a conductor for coarse adjustment that connects between the one end and the other end of the microstrip line to the ground electrode, thereby reducing the line length of the microstrip line in the connection state.