39results about How to "Short connection distance" patented technology

A scan chain group structure in which a group of scan chains formed for each clock tree system in an LSI is subjected to a reconnection process so that the scan chain group is not present across a plurality of clock distribution regions obtained by dividing the clock-supplied region of the clock tree of one system and that the connection distance thereof in the distribution region becomes short, a test clock input mechanism in which test clocks to be input to the distribution regions are independent sub-clock phases, and an on/off mechanism of the clocks to be input to the distribution regions are realized. Further, the scan-in/out and scan test performed at the same time are limited in one region or between single regions, and tests in all regions and between all regions are carried out by a plurality of times of test steps.

The invention provides an integrated antenna array and a base station. The integrated antenna array comprises at least two antenna oscillators, a power split coupling plate and a filter. The power split coupling plate is provided with a power split coupling circuit for coupling a signal outputted by the filter and transmitting the signal to different antenna oscillators. The filter and the antennaoscillators are mounted on two sides of the power split coupling plate and are connected by the power split coupling circuit on the power split coupling plate, therefore, the two antenna oscillators,the power split coupling plate and the filter are integrated to be an integrated structure, the structural components are highly integrated, the connection distance between various components is short, the antenna space is saved, the weight of the antenna is reduced, and a circuit board is not needed and the signal loss is small.

The invention relates to protect a 3D printer slice contour path planning algorithm. According to the 3D printer slice contour path planning algorithm, firstly, an optimized shortest distance algorithm is adopted to determine starting points of all closed loop contours in the slicing process, the starting points serve as connecting points of a 3D printing contour sequence, and the target of the algorithm is to shortens the distance between the starting points as much as possible; secondly, an initial parameter value of the ant colony algorithm is determined by adopting a single variable method; and thirdly, path planning is carried out on the determined printing starting point by utilizing an improved ant colony algorithm, so as to obtain an optimal printing path. According to the 3D printer slice contour path planning algorithm, the optimal printing sequence is planned by reasonably selecting the printing starting point of each closed loop contour, so that the 3D printing efficiency is improved, and the printing time is shortened.

Provided are a television main board PCB and a TDMA noise inhibition method thereof. The television main board PCB comprises an operation amplifier IC and a filtering capacitor. The operation amplifier IC is arranged on the top layer of the television main board PCB and comprises power supply input ends and power supply ground ends. The filtering capacitor and the operation amplifier IC are arranged in a back-to-back manner. The filtering capacitor is arranged on the bottom layer of the television main board PCB. The power supply ground ends of the operation amplifier IC are firstly electrically connected with one pole of the filtering capacitor, and then electrically connected with the main board ground of the television main board PCB though one pole of the filtering capacitor. The power supply input ends of the operation amplifier IC are electrically connected with the other pole of the filtering capacitor. The peripheral areas of the wires electrically connected between the power supply ground ends of the operation amplifier IC and one pole of the filtering capacitor are not covered by copper layers. According to the invention, the connection distance between the operation amplifier IC and the filtering capacitor of the television main board PCB is the shortest, the power supply ground ends of the operation amplifier IC and one pole of the filtering capacitor are connected with the main board ground of the television main board PCB together, a single-point loop mode is formed since the wired areas between the power supply ground ends of the operation amplifier IC and one pole of the filtering capacitor are not covered by the copper layers, and audio and video signals containing TDMA noises are directly sent to the filtering capacitor to be effectively filtered.

The invention discloses a 3D stacked spatial power synthesis amplifier, and aims to provide a 3D power synthesis amplifier which is shorter in connection distance and higher in integration degree. According to the technical scheme, a first composite array plane 1 and a second composite array plane 2 are stacked, a composite array plane N and a composite array plane N1 are stacked, and input/outputnodes of the composite array planes 1-N are vertically interconnected from bottom to top and overlapped together in the Z direction to form an N array; an input radio frequency channel and an outputradio frequency channel which penetrate through the layers in the X direction are formed in layer stacks of the synthetic array planes 1-N based on the 3D micromechanical technology, and three-dimensional packaging of three-dimensional integration and signal communication is formed in the Z-axis direction; therefore, a hybrid 3D array in which a plurality of amplifier array planes and power distribution/synthesis network array planes are alternately stacked and vertically interconnected is formed. According to the invention, more amplifiers can be combined in the same volume. And the small-sized and high-power use is met.

In order to solve the problems of electromagnetic interference and electromagnetic compatibility when satellite positioning navigation chips are integrated into a module, the invention provides a satellite positioning navigation module of a mobile terminal. The problems of the electromagnetic interference and the electromagnetic compatibility are eliminated or reduced through reasonable arrangement of pins. The satellite positioning navigation module can be widely applied to the mobile terminal.

A band clip includes a binding band portion and a clip portion. The clip portion has a flange portion, a column portion, four inclined pieces inclined relative to the column portion, and a connecting piece connecting the column portion and each inclined piece. The clip portion is constituted of a shape memory resin and acquires a memorized shape such that a connecting distance between the column portion and each inclined piece becomes shorter than at normal temperature. When fitting the clip portion to a through hole, a second end portion near a vehicle body panel bends so that the inclined piece is locked to an edge of the through hole. When removing the clip portion from the through hole, a distance between a lower end portion of the inclined piece and a central axis of the column portion reaches a size that can pass through the through hole.

The invention provides a pixel driving structure and a display panel, relates to the technical field of display, and solves the problem that various different types of feed-through effects occur due to parasitic capacitance between pixels, the pixel driving structure at least comprises a pixel unit, the pixel unit comprises a first pixel group, a second pixel group and a gate line group, the gate line group comprises upper scanning lines and lower scanning lines, all sub-pixels in the first pixel group are electrically connected with the same upper scanning line, and all sub-pixels in the second pixel group are electrically connected with the same lower scanning line. According to the pixel driving structure, the types of various stray capacitances of the sub-pixels in the first pixel group and the second pixel group are reduced, so that in the scanning driving process of the pixel driving structure, compared with a pixel driving structure in the prior art, the types of feed-through effects occurring in the pixel driving process are reduced, the problem of uneven display brightness is solved, and the display quality is improved. And the risk of head shaking lines in the display process is reduced.

The invention relates to a DC combiner box, which belongs to the technical field of combiner devices for photovoltaic power generation. The DC combiner box comprises a box body. The box body is internally provided with combiner branches of which each is connected with an incoming end, a current sensor, a fuse, a combiner bus-bar, a circuit breaker and an outgoing end in turn. A monitoring device is arranged in the box body for being in collection connection with the current sensor. The current sensor of the DC combiner box is directly connected to the incoming ends of the combiner branches, sothat the current sensor can detect a current from an external input cable of the DC combiner box directly without going through the fuses, and the measurement is more accurate and reliable. Moreover,because the current sensor is located between the incoming ends and the fuses, a combiner box manufacturer does not need to connect the fuse by a wire, pass the wire through the current sensor and then connect the wire to the combiner bus-bar in order to connect the combiner branches and can directly connect the current sensor, the fuses and the combiner bus-bars in turn, the installation is convenient, and the efficiency of installation is improved.

The invention provides a four-pin integrated circuit packaging structure with heat dissipation, which comprises an encapsulation structure composed of a base island, a lead pin, a heat dissipation pinand a plastic packaging body. The packaging structure is used for packaging a device with three to four ports. Gaps are reserved between a PIN1 and a PIN2, and between a PIN1 and a PIN2 and a PIN4 and the base island, thereby improving the voltage withstanding ability. The PIN3 is connected with the base island, the pin width is increased, laying of a grounding wire is facilitated, heat generatedwhen a chip works can be radiated through the PIN3 exposed outside, and the chip can be prevented from being overheated and burnt down. Each flow channel of the frame can be molded with four lead frame units left and right, and the molding compound utilization rate is improved.

The invention provides a mobile phone functional module of a mobile terminal, which aims to solve the problems of electromagnetic interference and electromagnetic compatibility when a chip with a mobile phone function is integrated into a module. The electromagnetic interference among signals of pins is reduced or eliminated by reasonably arranging the pins. The mobile phone functional module canbe widely applied to mobile communication terminals.

The invention provides a membrane switch comprising an upper substrate, a partition plate and a lower substrate which are sequentially arranged from top to bottom; a first through hole penetrating through the partition plate is formed in the partition plate, a cavity defined by the hole wall of the first through hole, the lower surface of the upper substrate and the upper surface of the lower substrate forms a pressing air cavity, and electric conductors are arranged in the pressing air cavity; the electric conductors are arranged on the surfaces of the opposite sides of the upper substrate and the lower substrate; the partition plate is connected with the upper substrate and the lower substrate in a sealed mode; the lower substrate is provided with second through holes communicating the pressing air cavity with the outside, the outer walls of the electric conductors are provided with isolation layers, and conduction of the upper electric conductors and the lower electric conductors is achieved through mutual contact of the isolation layers; therefore, the pressing air cavity is communicated with the outside only through second through holes, the communication distance is short, the drainage and exhaust efficiency is high, the pressing comfort is good, and the drainage performance is good; the electric conductors can be isolated from air and water in the pressing air cavity through the isolation layers, oxidation and corrosion of the electric conductors are avoided, and the technical effect that the original function is restored after water is drained is achieved.

The invention relates to the technical field of numerical control machine tools, and discloses a hydraulic type buffering internal protective cover of a machine tool. The hydraulic type buffering internal protective cover of the machine tool comprises a sliding mechanism and a tool installation rack for installing a tool. A baffle is arranged on one side of the tool installation rack. The slidingmechanism comprises a first telescopic plate. The first telescopic plate is fixed to the tool installation rack. The side, away from the tool installation rack, of the first telescopic plate is in sliding connection with a second telescopic plate. The second telescopic plate is in sliding connection with a fixed plate. An air bag is arranged between the first telescopic plate and the second telescopic plate, and an air bag is arranged at the position of sliding connection between the second telescopic plate and the fixed plate as well. The first telescopic plate and the fixed plate are each provided with a guide plate used in cooperation with a guide shaft. A hydraulic cylinder is arranged on the first telescopic plate. An output shaft of the hydraulic cylinder is fixedly connected with the first telescopic plate. An air tank communicating with the air bags is fixed to the hydraulic cylinder. A piston plate is arranged in the air tank in a sliding connection manner. The hydraulic typebuffering internal protective cover of the machine tool is simple in structure, capable of avoiding scraps well, and capable of working stably.