89 results about "Buffer design" patented technology

The invention provides a software performance optimization method based on a CPU multi-core platform. The method comprises software characteristic analysis, parallel optimization scheme formulation and parallel optimization scheme implementation and iteration tuning. Particularly, the method comprises application software characteristic analysis, serial algorithm analysis, CPU multi-in/thread parallel algorithm design, multi-buffer design, design of communication modes among threads, memory access optimization, cache optimization, processor vectorization optimization, mathematical function library optimization and the like. The method is widely applicable to application occasions with multi-thread parallel processing requirements, software developers are guided to perform multi-thread parallel optimization improvement on prior software rapidly and efficiently with short developing periods and low developing costs, the utilization of system resources by software is optimized, data reading and computing and mutual masking of write-back data are achieved, the software running time is shortened furthest, the hardware resource utilization rate is improved apparently, and the software computing efficiency and the software whole performance are enhanced.

The invention relates to a button structure. The button structure comprises a keycap, balance rods, a base plate, and a buffer plate, wherein the keycap comprises combination portions and a lower surface, the combination portions protrude from the lower surface, and when the keycap is pressed, the keycap moves downwardly to a decrease position; the balance rods are connected to the combination portions, and when the keycap is positioned at the decrease position, the lower points of the combination portions are lower than the balance rods; the base plate is arranged below the keycap, the base plate comprises recessed spaces corresponding to the combination portions, the buffer plate is arranged on the base plate, the buffer plate covers the recessed spaces and comprises deformable portions corresponding to the recessed spaces, and when the keycap moves to a lower position towards the base plate, the lower points of the combination portions are abutted against the deformable portions, and the deformable portions extend into the recessed spaces. According to the buffer design of the button structure, buffer elasticity can be provided during button operation, noises generated by direct collision with the base plate of the keycap can be avoided or reduced, and a multilayer structure of a membrane switch forms the buffer design so that the material cost is not increased, and the function of noise reduction can be effectively performed.

The invention discloses a mechanical molecular spring vibration isolation buffer device. In a mechanical molecular spring vibration isolation buffer technology, water is used as a force transferring medium, and pistons and pre-compressed springs are used as force bearing components; a vibration isolation buffer designed on the basis of the mechanical molecular spring vibration isolation buffer technology mainly comprises a main piston, a plurality of secondary pistons, a cylinder body and an upper end cover; the main piston is used for carrying the mass; each secondary piston is connected with a pre-compressed spring with specific rigidity; the cylinder body is filled up with water. The mechanical molecular spring vibration isolation buffer has distinct piecewise linear rigidity, comprises a bearing section, a working section and a limiting section, can achieve high-static and low-dynamic rigidity characteristics, has the characteristics of low working pressure intensity, adjustable performance parameters and the like, and is especially applicable to the low-frequency overloading field.

A gateway for interfacing a capillary network of communicating devices with an access point of a cellular network. The gateway includes a plurality of input buffers designed to store elementary packets. A plurality of output buffers store composite packets formed by aggregation of elementary packets, each output buffer being associated with a type of flow of the cellular network. A flow regulator determines for each output buffer, parameters of size and/or transmission times of the composite packets such that the flow of these packets is consistent with the type of flow of the cellular network associated with the output buffer. A multiplexing device transfers and aggregates elementary packets, stored in the input buffers, in the form of composite packets having the parameters determined by the flow regulator. A scheduling device for transmitting the composite packets by the transmission resources of the cellular network.

An input buffer includes a first stage for receiving an input signal and having a first pair of complementary output signals, the first stage including an input circuit for receiving the input signal, an output circuit for generating the first pair of complementary output signals based on the input signal, a resistance feedback circuit connected to the first pair of complementary output signals and generating a feedback signal, and a common mode circuit for balancing the complementary outputs based on the feedback signal.

A semiconductor memory device adapted to burst transmission is provided for improving flexibility of data write operation. The semiconductor memory device is composed of: a memory array; a set of write registers; an input buffer designed to sequentially receive a series of write data during a burst cycle, and to write said write data into associated ones of said write registers; a write release register containing a set of write release flags associated with said write registers, respectively; a write release register controller asserting associated ones of said write release flags in response to said write data being written into said associated ones of said write registers; and a write amplifier designed to concurrently write said write data contained in said write registers associated with asserted ones of said write release flags, selectively, when said burst cycle is aborted in response to a control signal.

A processor including an architecture for limiting store operations includes: a data input and a cache input as inputs to data merge logic; a merge buffer for providing an output to an old data buffer, holding a copy of a memory location and two way communication with a new data buffer; compare logic for receiving old data from the old data buffer and new data from the new data buffer and comparing if the old data matches the new data, and if there is a match determining an existence of a silent store; and store data control logic for limiting store operations while the silent store exists. A method and a computer program product are provided.

The invention discloses a fire work impact data preprocessing method which comprises the following steps: S1, acquiring a discrete acceleration signal; S2, judging whether the discrete acceleration signal is effective, deciding the discrete acceleration signal is available if yes, or executing the step S3; S3, correcting the discrete acceleration signal and acquiring a corrected discrete acceleration signal; S4, further judging whether the corrected discrete acceleration signal is effective, deciding the corrected discrete acceleration signal is available if yes, or abandoning the discrete acceleration signal. According to the method disclosed by the invention, correctness and truth of the fire work impact signal can be improved; the method has strong engineering background and has great referential significance for reducing the weight of an aircraft and making a buffer design and impact acceptance test standard. The invention also discloses a fire work impact data preprocessing system.

A boundary scan test system including a transmitter and a receiver. The system performs DC and AC boundary scan testing of the interconnections between devices. The system addresses fault masking that can occur during testing. Of concern are AC coupled interconnections while providing IEEE 1149.1 DC test compatibility. The test receiver includes an input test buffer and an interface mechanism. The input test buffer has a built-in null detection capability. The interface mechanism includes a technology mapper, one or more detectors, and an integrator. The receiver provides at least partial, if not complete, coverage for at least one of five fault syndromes that can result from single defect conditions in the system.

The invention discloses a power buffer design method based on model predictive control. By utilizing a characteristic of multi-objective optimization of the model predictive control, a three-phase rectifier bridge and a DC/DC converter are controlled at the same time. A target optimization function is designed by adopting a finite set method; in combination with constraint conditions of differentenergy flow coupling, an overall control model is built; multi-objective optimization control can be realized by adopting the model predictive control method; and for a power supply system with an energy storage device, an active energy management mode is adopted, so that the energy optimization distribution of a more electric aircraft can be realized. Therefore, direct-current bus voltage is stable. The model performs buck-boost control on the bidirectional DC/DC converter according to the energy feedback condition of a motor, and direct-current bus power is stable through charging and discharging of a battery pack. The power topology of the power buffer converter is adopted; and the direct current bus power is compensated and absorbed through a storage battery, so that the weight of theaircraft can be effectively reduced.

A hammering tool with buffer design includes: a hammering member, a protrusion block section extending from a lower side of the hammering member, a right side of upper section of the protrusion block section being notched to form a first receiving space; a handle member having a grip section, a first plate section, a second plate section and a third plate section being disposed at an upper end of the grip section to define a receiving chamber for inserting the protrusion block section therein; a pivot member for pivotally connecting the protrusion block section of the hammering member with the handle member; and a buffer assembly including a first compression spring received in the first receiving space. A right end face of the protrusion block section of the hammering member is spaced from a left face of the first plate section by a predetermined buffering distance.

The invention discloses an intelligent barricade safety anti-collision device, mainly including a machine shell. A driving cavity, a first lifting cavity, a second lifting cavity, a driven cavity and an air pressure cavity are arranged in the machine shell, lifting mechanisms ejecting an automobile are arranged in the first lifting cavity and the second lifting cavity, the driving cavity is provided with a driving mechanism providing a power output for the device and further provided with a buffer mechanism slowing down a collision automobile, and a camera shooting mechanism is arranged in the driven cavity. According to the intelligent barricade safety anti-collision device, the automobile can be effectively prevented from forcibly colliding barricades, when the automobile forcibly collides the barricades, the advantage of double buffer design is used for protecting personnel present and the automobile to the greatest extent, in the process of the automobile colliding the barricades, the automobile is supported off the ground to cut off the power for continuously driving the automobile forwards, and the good damage reduction effect is achieved.

A bike with suspended back vibration damper for low pedaling energy loss, low kickback or pedal feedback, and low braking affection is disclosed. The vibration damper features no sag setting and buffer design. The bike with suspended back vibration damper is characterized by having low pedaling energy loss, low braking affection, low kickback or pedal feedback, low energy loss, good comfort and long life of the shock absorber no matter what standing or sitting.

The invention belongs to the technical field of aircraft landing gear buffer design, particularly relates to a double-cavity buffer, and provides a double-cavity buffer. The double-cavity buffer comprises an inner cylinder, a first plug cap, a second plug cap, a first floating piston, a second floating piston, an outer cylinder and a spacer sleeve; two independent first oil cavities, a first air cavity and a second air cavity are formed in the inner cylinder; the outer side of the inner cylinder is sleeved with the outer cylinder; a second oil cavity is formed between the outer cylinder and the inner cylinder and communicates with the first oil cavity through a throttling hole; and the second oil cavity, the first air cavity and the second air cavity are arranged in parallel. Compared withthe prior art, the length of the double-cavity buffer can be effectively decreased, the structure is more compact, and the small mass can be obtained.

The invention discloses a buffering method supporting non-blocking missing processing. When a processor encounters missing requests, the method temporarily stores the missing requests in the missing instruction queue through buffering, allowing the pipeline to continue sending subsequent irrelevant requests. , hide the miss cost in the normal processing of irrelevant requests, and reduce the memory access latency by reducing the buffer miss cost. In the present invention, multiple missing requests are overlapped, multiple judgments can be made through the missing buffer, and multiple missing requests are stored uniformly, thereby further reducing the actual missing cost. The invention has wide applicability, can be applied to various multi-core chip buffer designs, and can improve the efficiency of pipeline processing.

The invention discloses a multi-fractal network flow reconstruction method. According to the method, a roughest scale coefficient and a random multiplication factor are generated and determined by adopting pareto distribution of a heavy tail distribution characteristic, so that the non-negativity of scale coefficients and wavelet coefficients is ensured, the reconstructed flow is accordant with the heavy tail distribution characteristic of practical flow, and the network flow can be reconstructed more finely and accurately. Network flow signals reconstructed with the method disclosed by the invention is applied to network analysis and management activities such as network planning, load balance, blockage control, buffer design and the like.

A digital signal processor with switching over buffers mainly comprises a program control unit, an address generator unit, an instruction decoding unit, a digital data processing unit, an inner-chip digital data storage device, an outer-chip digital data storage device, a selector and a hit judgment logic equipment. The invention improves the existing buffer design, only by a the arrangement of a port, the buffer on the chip can be modified into conventional on chip internal memory, which enables accurate and efficient internal memory access operation when executing small programs.

The invention provides a data transfer buffer design method of Scatter-Gather DMA and relates to the technical field of data transmission. When scatter-gather DMA is used for transferring data, two scatter-gather DMA linked lists are created, and the two scatters-gather DMA linked lists point to two sets of kernel space buffers, and the number of each set of kernel space buffers corresponds to thenumber of nodes of the corresponding scatter-gather DMA linked list; while user space data is copied into a set of kernel space buffers for DMA transfer, the next user space data to be transferred iscopied into another set of kernel space buffers by the CPU. When the last DMA transfer is completed, the next DMA transfer is initiated by the interrupt handler until the user space data is completely written to the device.