33results about How to "Parallel implementation" patented technology

The present invention discloses a method for 4*4 sub-macroblock parallel intraframe prediction in H.264/AVC, comprising the steps of: a unified intraframe prediction formula, a reference value array, a reference position table and a concrete implementation step of parallel intraframe prediction. The unified intraframe prediction formula is improved based on the feature of a CUDA and an intraframe prediction formula, by the corresponding prediction formulas of 9 prediction modes to be transformed into one formula to meet the requirements of the CUDA multi-thread single instruction multiple data stream, to achieve the fine-grained parallel in the intraframe prediction sub-macroblock. The reference value array and the reference position table are designed to cooperate with the unified intraframe prediction formula and to completely eliminate a large number of branch statements that affects the parallel algorithm performance. The present invention in the process of the intraframe prediction achieves the pixel level parallel, can effectively use multi-core resources in a GPU to accelerate the process of intraframe prediction, and shorts a coding time.

The invention provides a multi-cavity piezoelectric air-liquid pump. The air-liquid pump comprises a piezoelectric air pump body and a piezoelectric liquid pump body, and a piezoelectric air pump baseis in threaded connection with the piezoelectric liquid pump body; and the piezoelectric air pump body comprises a threaded pump cover I, a sealing ring I, three piezoelectric vibrators I and a pumpbody I, the three piezoelectric vibrators I and the pump body I form a pump cavity and divide the pump cavity into a first pump cavity body, a second pump cavity body and a third pump cavity body, follow-up thin wafer valves are arranged in corresponding inlets and outlets of the first pump cavity body and the second pump cavity body, a first fixing frame is arranged at the bottom of the pump bodyI, and a first V-shaped bluff body is arranged on the first fixing frame. According to the air-liquid pump, the follow-up thin wafer valves are quick in response, small in opening pressure and good in pump valve following performance, and in cooperation with the disc-shaped vibrators, the pumping performance of the parallel pump is greatly improved; and a valve pump, a valveless pump, the air pump body and the liquid pump body are integrated into a whole, all the pumps can be jointly controlled or independently controlled, simultaneous pumping and independent pumping of gas and liquid can berealized, the flow range is wide, and various working requirements can be met.

The invention discloses a video-based fast template matching GPU implementation method which comprises the following steps: (1) copying image data to GPU equipment, wherein the operation of copying the images to the equipment and image template matching are executed at the same time as two independent streams, one of which executes a current-frame image template matching calculation process operation while the other of which executes a next-frame image copying operation; (2) storing the image template data in a shared memory, storing the image data in a texture memory, and randomly accessing by virtue of the texture memory for computation of match degree with the image template; (3) carrying out calculation at the same time by virtue of a multi-thread parallel calculation mode, wherein one thread calculates the template match degree quantity value of one position; and (4) determining the maximum value or the minimum value of the template match degree quantity value by virtue of a global atom and a shared atom so as to obtain a template matching result. According to the method disclosed by the invention, the template matching time can be obviously shortened and the practical value of a template matching algorithm can be improved.

The invention discloses a processing device and method for producing flat yarns. The device comprises an input roller used for inputting core yarns, a parallel arrangement yarn guide arranged above the input roller, a ring arranged above the parallel arrangement yarn guide and used for accommodating covering yarns, a flat yarn guide hole type yarn guide arranged above the ring, and an output roller arranged above the flat yarn guide hole type yarn guide, wherein the parallel arrangement yarn guide is provided with at least three first yarn guide holes arranged in parallel, the ring is provided with a ring center hole, the flat yarn guide hole type yarn guide is provided with a second yarn guide hole, the first yarn guide holes are matched with the ring center hole, and the ring center hole is matched with the second yarn guide hole. By the adoption of the structure, a plurality of core yarns can pass through yarn guiding devices arranged in parallel so as to enter a twisting system in parallel; meanwhile, the flat yarn guide hole type yarn guide is adopted for an output yarn guiding device, so that it is guaranteed that the core yarns are arranged in parallel when fixed by the covering yarns.

The invention provides a power device packaging structure and a preparation method thereof. The power device packaging structure comprises a plurality of power device packaging structure units, the power device packaging structure unit comprises a first heat dissipation substrate, a power device, a diode and a high-heat-conductivity plastic packaging material shell, wherein the power device and the diode are arranged on the surface of the first heat dissipation substrate, and the upper part of the power device packaging structure unit is subjected to plastic packaging by using a high-heat-conductivity plastic packaging material, a high-heat-conductivity plastic packaging material shell. The first heat dissipation substrate is in a long plate shape, and the power device and the diode are sintered on the surface of the first heat dissipation substrate through a sintering technology. The power device packaging structure based on the sintering technology can realize series-parallel connection in a two-dimensional plane, has good heat conductivity and reliability, and is simple in grid control; and in the manufacturing of a single subunit, the chip surface is not required to be directlycontacted, so that the risk of chip damage caused by uneven pressure is avoided.

The invention relates to over-snow transporting equipment, in particular to a sleigh suspension mechanism. The sleigh suspension mechanism comprises a supporting seat, connecting rods, sleigh boards and shock absorbers. Each connecting rod is hinged between the supporting seat and the corresponding sleigh board. A parallelogram mechanism is formed among the supporting seat, the sleigh boards and the connecting rods. Each shock absorber is further arranged between the supporting seat and the corresponding sleigh board and comprises a shock absorber sliding shaft, a spring and a shock absorber guide sleeve. One end of each shock absorber sliding shaft and one end of the corresponding shock absorber guide sleeve are hinged to the corresponding sleigh board and the supporting seat. The other end of each shock absorber sliding shaft and the other end of the corresponding shock absorber guide sleeve can be connected in a relatively telescopically inserted manner. Each shock absorber sliding shaft and the corresponding shock absorber guide sleeve are sleeved with the corresponding spring. The two ends of each spring are connected with the corresponding shock absorber sliding shaft and the corresponding shock absorber guide sleeve. By the adoption of the sleigh suspension mechanism, the sleigh boards and the ground are kept in parallel, the pressure distribution evenness of the bottom face of each sleigh board is guaranteed, the adaptive capacity of a sleigh to the ground is improved, and the sleigh suspension mechanism is suitable for a vehicle body mechanism using the sleigh as a moving manner in an ice and snow environment.

The invention discloses an integrated low-voltage energy storage power supply system for a vehicle. The integrated low-voltage energy storage power supply system comprises a storage battery; a power supply main switch, the input end of the power supply main switch being connected with the positive electrode of the storage battery, and the negative electrode of the storage battery being the whole vehicle common ground; a charging relay, the input end of the charging relay being connected with the output end of the power supply main switch, and the output end being grounded; a current-limiting resistor, the input end of the current-limiting resistor being connected with the output end of the charging relay; a super capacitor module, formed by connecting a plurality of super capacitors in series and in parallel; a parallel relay; and a starter, the output end of the starter being connected with a whole vehicle engine starter. The parallel relay enables the output end of the power supply main switch to be connected in parallel with the positive electrode of the super capacitor module. The input end of the starter is connected with the output end of the current-limiting resistor, the output end of the parallel relay and the positive electrode end of the super capacitor module. Charging current-limiting control can be realized, and the starting success rate is improved. The invention further provides a control method of the integrated low-voltage energy storage power supply system for the vehicle.

The invention discloses a clamping device. The device comprises a base plate and a plurality of movement execution mechanisms. Each movement execution mechanism comprises a first direction movement device, a second direction movement device and a third direction movement device, wherein the first direction movement device is arranged on the base plate, the second direction movement device is arranged on a work portion of the first direction movement device, and the third direction movement device is arranged on a work portion of the second direction movement device; and a clamping mechanism isarranged on a work portion of the third direction movement mechanism and comprises a clamping portion, and the clamping portion comprises a plurality of clamping jaws and a drive device used for driving the clamping jaws. The multiple movement execution mechanisms perform multithreading parallel operation.

The invention provides a parallelism adjusting method which comprises the steps that 1, a base is installed on a reference plane, 2, a second adjusting block is installed on the base, and the lower portion of the second adjusting block is movably connected with the base through bolts, 3, adjusting screws are installed at the two ends of the second adjusting block, 4, the upper end of the second adjusting block is movably connected with a first adjusting block through bolts, the rotating direction of the first adjusting block is enabled to be perpendicular to that of the second adjusting block; 5, adjusting screws are installed at the two ends of the first adjusting block; 6, an object to be measured is fixed to the first adjusting block; 7, the height of two ends of the first adjusting block is measured, and the height of two ends of the first adjusting block is adjusted to be same; 8, the height of two ends of the second adjusting block is measured, and the height of two ends of the second adjusting block is adjusted to be identical. According to the method, the parallelism of the two directions is adjusted by adjusting the two adjusting blocks, finally, the plane of the object to be measured is parallel to the reference plane, the structure is simple, and adjustment is convenient.