31 results about "High performance design" patented technology

A latch placement tool determines a shape for a cluster of latches from a preliminary layout (or based on a netlist), including an aspect ratio of the shape, and generates a template for placement of the latches in conformity with the shape. Latches are placed around a local clock buffer (LCB) based on latch size, from largest latch first to smallest latch last, and based on their ideal locations given the target aspect ratio. The ideal locations may be further based on the clock driver pin configuration of the LCB. The final template preferably has an aspect ratio that is approximately equal to the aspect ratio of the shape of the cluster, but the latch placement may be constrained by clock routing topology. Latch placement within a cluster can be further optimized by swapping one of the latches with another to minimize total wirelength of the design.

Power, routability and electromigration have become crucial issues in modem microprocessor designs. In high performance designs, clocks are the highest consumer of power. Arranging clocking components with regularity so as to minimize the capacitance of the clock nets can help reduce clock power, however, it may hurt performance due to some loss of flexibility in physically placing those components. The present invention provides techniques to optimally design a clock network by logically assigning clusters of the latches to respective clock distribution structures, placing clock pins at favored pin locations, and placing clock distribution structures directly underneath the clock pins. The clock distribution structures may be moved to favored distribution locations along the clock stripes, and new optimal clustering generated between the latches and the clock distribution structures. These three optimizations are preferably repeated iteratively to derive a local optimal solution for the clock network.

The present invention includes, from an object side to an image-plane side: an aperture stop with a predetermined diameter, a first lens with a positive refractive power having a convex surface on the object side, a second lens with a positive refractive power having a concave surface on the object side, and a third lens with a negative refractive power having a convex surface on the object side. The second and third lenses have aspherical surfaces on their object-side and image-plane-side surfaces. The third lens is formed with an inflection point where the curvature orientation changes within the effective diameter range of the aspherical surface on the image-plane side. An appropriate back focus is maintained while the total length of the lens system is reduced. A compact, thin, high-performance design is achieved, which effectively corrects various aberrations, especially astigmatism and distortion, and is suited for digital cameras using high-density solid-state imaging elements of one million pixels or more.

Roughly described, a design rule data set is developed offline from the design rules of a target fabrication process. A design rule checking method involves traversing the corners of shapes in a layout region, and for each corner, populating a layout topology database with values that depend on respective corner locations. After the layout topology database is populated, the values are compared to values in the design rule data set to detect any design rule violations. Violations can be reported in real time, while the user is manually editing the layout. Preferably corner traversal is performed using scan lines oriented perpendicularly to edge orientations, and scanning in the direction of the edge orientations. Scans stop only at corner positions and populate the layout topology database with what information can be gleaned based on the current scan line. The different scans need not reach each corner simultaneously.

A compact monochrome ink jet printhead having a staggered high-density arrangement of ink drop generators for high-performance printing. The present invention provides a high-performance design that enable high-resolution and high-speed printing while reducing cost due to an efficient use of printhead space. In particular, the compact, high-performance printhead of the present invention includes several thermally-efficient aspects that allow a large number of ink drop generators to be placed on a compact printhead while minimizing problems such as thermal excursions. In a preferred embodiment, the ink drop generator density on the compact printhead exceeds 10 ink drop generators per square millimeter and the compact printhead contains at least 350 nozzles. The ink drop generators are arranged in at least four parallel rows. Each row is staggered (or offset) relative to an adjacent row to provide a greater effective pitch that a non-staggered arrangement.

The invention provides a three-way catalytic converter, an engine exhaust assembly and an automobile. By adopting an intake flange with blades and an intake pipe matched with it, the intake end of the three-way catalytic converter is analyzed from the overall structure. The optimization can not only solve the problem that the intake pipe and the three-way catalytic converter casing cannot be welded and matched due to the smaller layout space of the three-way catalytic converter, but also can improve the uniformity coefficient of the airflow and meet the high-performance design requirements.

The present invention discloses a multi-turn absolute value encoder, comprising: a detection module, a power supply working module and a power-off working module; the detection module is used for performing power-on detection and power-off detection; when the power-on is detected, the power supply working module works; when the power-off is detected, the power-off working module works; the power working module includes a single-turn absolute value encoder and a single-chip microcomputer, the single-chip microcomputer collects rotor position information of a motor via the single-turn absolute encoder; the power-off working module includes a common encoder and a low-power single-chip microcomputer, and the low-power microcomputer collects the rotor position information of the motor through the common encoder. The multi-turn absolute value encoder with low-cost high-performance design combines advanced algorithms, to achieve low cost, high precision, small size and unlimited measurement range is unlimited, and achieves continuous long-term use without external power supply. The invention also discloses a working method of a multi-turn absolute value encoder.

The present invention provides a method for extracting voiceprint feature vectors from encrypted network streams, comprising the steps of: S2. establishing a voiceprint feature vector extraction sliding window for encrypted network streams; S3. updating the voiceprint feature vector extraction sliding window using current data packets; S5. Filtering the voiceprint feature vector to extract the sliding window; S7. Screening out unit groups with more than k units in a row from the sliding window; S9. Extracting the voiceprint features of each unit group in sequence. The voiceprint features extracted by the invention can effectively describe the dynamic features of the network flow. The method of the present invention not only inherits the advantages of the traditional network flow statistical feature extraction method, but also can provide more abundant and reliable knowledge, and can provide technical support for the design and realization of a high-performance traffic classification system in a high-speed network.

The invention discloses a mini-fan performance test system based on a human-computer interaction interface. The human-computer control and display module of the test system is connected with a drive motor module, a performance parameter data acquisition module and a pulling motor module respectively; the human-computer control and display module contains a communication interface, a controller and the human-computer interaction interface; and the human-computer control and display module obtains the instructions of the user through the human-computer interaction interface, then the instructions are processed by the controller to control the rotation speed of the drive motor module and the frequency of the pulling motor module through the communication interface, and the human-computer control and display module exchanges data with the performance parameter data acquisition module to obtain the required information. The test system of the invention is suitable for the performance testsof various mini-fans; the main performance parameters to be tested contain static pressure, flow, rotation speed, torque, wind speed and the like. The invention provides real data for the high-performance design of the mini-fan and plays an important role in the optimization of the structure and parameters of the mini-fan.