37results 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.

A shifting device (1) for shifting a motor vehicle transmission with a shift selector shaft on which a plurality of shift elements (2) such as shift forks or shift rockers (3) are arranged and can be displaced to carry out a shifting operation. The shifting device (1) includes one hydraulic shift cylinder (5, 11, 18, 25), that can be actuated from both sides, with a piston (9, 15, 16, 19, 26) that can be displaced within a cylinder housing (6) and which is actively connected with a shift element (2) to be actuated. To simplify a shifting device (1) of this type, the piston (9, 15, 16, 19, 26) has a piston rod (10, 17, 23, 29) that follows the movement of the piston (9, 15, 16, 19, 26) and can be connected directly to the shift element (2) in a detachable manner.

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 optical pickup for recording and reproducing information on record media is provided. The pickup includes light sources corresponding to the record media, a drive circuit for driving one of the light sources, a switch for switching a connection between the drive circuit and one of the light sources, and a control circuit for controlling the drive circuit and the switch.With respect to transmission line lengths between the switch and the light sources, the shorter a wavelength of a light source, the shorter the corresponding transmission line length.

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.

A semiconductor apparatus includes a functional block to observe a state of a signal line in the apparatus. The functional block includes a signal transfer section to receive, transmit and output the state of the signal line, and an observation flip-flop to store a state of an input terminal or an output terminal of the signal transfer section.

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.

A wire harness having a shield structure that can exhibit a required shield effect and sufficiently meet demands for cost mitigation and weight reduction is provided. The wire harness is provided with an electrical line group that is held in a bundled manner, in which at least a portion of electrical lines that are positioned on the outer circumferential side of the electrical line group each have a metal thin-film for shielding as the outermost layer, the metal thin-film being formed so as to attach to an outer circumferential surface portion of a sheathing that surrounds a conductor of the electrical line, and a drain wire or another ground connection member that is grounded and comes into contact with the metal thin-films of the electrical lines.

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 an FPGA arrangement legalization method utilizing regional rearrangement and belongs to the technical field of FPGAs. The method comprises the following steps of: abstracting an initial layout state according to regions to establish a residual graph, and assigning values to directed edges formed by abstracting a relationship between rearrangeable nodes and arrangeable positions in the residual graph by utilizing a line length to serve as the expenditure of the edges; based on the minimum expenditure and maximum flow algorithm, solving the residual graph to obtain the final legal position of each node. According to the method, the maximum flow algorithm is applied to the legalization part of the quadratic linear programming algorithm, so that the legalization processwhich does not have guidance originally has guidance; and the legal nodes and the arrangement positions occupied by the legal nodes also participate in modeling solution, so that the initial arrangement is optimized while legalization is carried out, the quality of the final solution is improved to a certain extent, the legalized line length is shorter, and the arrangement result is better.

A device includes a printed circuit board, a clock connector provided on the printed circuit board and configured to be supplied with a first clock signal, a first register buffer provided on the printed circuit board, coupled to the clock connector and, including a first clock generator that produces a second clock signal in response to the first clock signal, a plurality of data connectors, provided on the printed circuit board, a plurality of memory chips each provided on the printed circuit board and including a first data terminal, and a plurality of second register buffers each provided on the printed circuit board independently of the first register buffer.

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.

The invention relates to the technical field of cable arrangement, in particular to a double-layer cable arranging device. The double-layer cable arranging device comprises a bottom frame, a driving mechanism, a transmission mechanism and a double-layer reel mechanism, wherein the driving mechanism, the transmission mechanism and the double-layer reel mechanism are all arranged on the bottom frame, the driving mechanism drives the double-layer reel mechanism to act through the transmission mechanism, and the bottom frame comprises a base, and the base is formed by welding a plurality of steel channels and steel plates; the double-layer reel mechanism comprises an outer reel and an inner reel, the inner reel is located in the outer reel, the inner reel and the outer reel are coaxially arranged, a plurality of openings formed in the axis direction are formed in the annular surface of the outer reel at intervals, and the outer reel and the inner reel are connected through rotating connecting parts arranged at the two ends of the mechanism. The double-layer cable arranging device is large in cable storage capacity, high in cable storage efficiency, compact in structure, and convenient to install and maintain are convenient, the manufacturing cost is reduced, and the offshore operation depth and efficiency are greatly improved.

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.

The present invention provides a driving device, a camera module and an electronic device. The driving device comprises a base, a carrier and a driving member, the carrier is arranged on the base andcan move up and down relative to the base, a first end of the driving member is fixedly connected to the base, a second end opposite to the first end is fixedly connected to the carrier, and a part between the first end and the second end of the driving member is connected to the carrier. A height difference exists between the part between the first end and the second end and the first end in thevertical direction, and the driving member can stretch out and draw back to drive the carrier to move vertically relative to the base. According to the driving device, the camera module and the electronic device, one end of the driving member is fixed to the base, and the other end of the driving member can move along with the carrier, so that the conversion rate of converting the shrinkage amountof the driving member into carrier displacement is high. Meanwhile, the conversion rate of converting the shrinkage amount of the driving member into the displacement of the carrier is high, so thatthe required line length of the driving member is short, the occupied space of the driving member is reduced, and miniaturization of the driving device is facilitated; moreover, the shrinkage amount of the driving member is small, the service life of the driving member is long, and the service life of the driving device can be prolonged.