69 results about "Very-large-scale integration" patented technology

The present invention relates to a CMP abrasive comprising a ceria slurry and a chemical additive having two or more functional groups by mixing and synthesizing a polymeric molecule and a monomer. Also, the present invention relates to a method for a manufacturing CMP abrasive by providing a ceria slurry, manufacturing a chemical additive having two or more functional groups by mixing and synthesizing of the polymeric molecule and the monomer in a reactor, and mixing said slurry and said chemical additive. Therefore, when the abrasive according to the present invention is used as an STI CMP abrasive, it is possible to apply the abrasive to the patterning process required in the very large scale integration semiconductor process. Furthermore, the CMP abrasive of the present invention has a superior removal rate, superior polishing selectivity, superior within wafer non-uniformity (WIWNU), and minimized occurrence of micro scratches.

A method and apparatus are described which eliminate the clock skew problems associated with routing clock signals throughout a circuit. Particularly well suited for Very Large Scale Integration ("VLSI") chips, the method and apparatus provide a resonator which is distributed across the circuit. This allows the clock to be accessed at a variety of locations without any propagation delay between the access points. The method for distributing a single, distributed clock signal to a plurality of clock connection points in a circuit comprises two steps. The first step is to generate the clock signal, such that the clock signal is available at a plurality of clock source points without propagation delay. The second step is to couple the plurality of clock source points to the plurality of clock connection points in the circuit.

Semiconductor devices having integrated nanochannels confined by nanometer spaced electrodes, and VLSI (very large scale integration) planar fabrication methods for making the devices. A semiconductor device includes a bulk substrate and a first metal layer formed on the bulk substrate, wherein the first metal layer comprises a first electrode. A nanochannel is formed over the first metal layer, and extends in a longitudinal direction in parallel with a plane of the bulk substrate. A second metal layer is formed over the nanochannel, wherein the second metal layer comprises a second electrode. A top wall of the nanochannel is defined at least in part by a surface of the second electrode and a bottom wall of the nanochannel is defined by a surface of the first electrode.

The invention discloses a VLSI (Very Large Scale Integration) structural design method oriented to an ultrahigh-definition real-time deblocking filter by adopting a boundary filter based on a five-level pipeline. The method optimizes a mixed filtration order and data output to avoid the stalled waiting of the pipeline, improves the performance of the pipeline, increases the throughput by approximate double in comparison with a single filter design by adopting the parallel double-boundary filter structure, optimizes a storage strategy, a buffer mechanism and the filtration order, develops the on-chip temporary storage of filtration intermediate results for complexing, and lowers the bandwidth requirement for external storage and the requirement for intermediate storage.

The invention relates to a legalized method used for mixed height standard cell circuit design. The technical scheme of the method comprises the following key points: (1) according to a cell position sequence obtained according to a global layout, carrying out relaxation on the right boundary constraint of a layout area, and converting a legalization problem of a mixed height standard cell into a corresponding LCP (Linear Complementary Problem), wherein the legalization problem can be effectively solved by an existing optimization method; (2) carrying out decomposition on a matrix in the converted LCP in a proper way, and using MMSIM (Matrix MultiSplitting Iterative Method) to solve the converted LCP, wherein the proper matrix decomposition meets MMSIM convergence requirements, and meanwhile, calculation time is greatly quickened; and (3) by use of the method, simultaneously optimizing all cells instead of optimizing cells one by one, and considering the legalization problem from a global perspective. An experiment result indicates that an efficient and practical legalization result (especially for a large-scale living example) can be provided, and the requirement of a mixed height standard cell legalization stage of existing VLSI (Very Large Scale Integration) can be met.

The invention is a circuit for realizing direction two-dimension discrete wavelet transition, which belongs to image data processing technology field, especially relates to hardware realization of direct two-dimension discrete wavelet transition. The aim is to decrease hardware cost and system delay, and it can be applied to very large scale integration circuit structure design of high speed and low power direct two-dimension discrete wavelet transition of all limit length filters, the invention includes selector, data series and parallel converting interface circuit, primary converting circuit which are connected in order electrically; the primary converting circuit is 4 input and 4 output structure, includes the first parallel filter and the second parallel filter, the first vertical filter and the second vertical filter connected to them and output coefficient regulating unit, the parallel and vertical filters are 2 input and 2 output structure, the first vertical filter and the second vertical filter output is connected to the output coefficient regulating unit; one output electric signal of the output coefficient regulating unit is connected to an external memory, the latter is outputted to one input end of the selector.

The present invention relates to one kind of 2D photon crystal power separator capable of being used in integrated optical path and operating to several light wave signals simultaneously. It includes one input waveguide, several output waveguides and coupling area of the 2D photon crystal power separator to connect the input waveguide and the output waveguides. The coupling area has input connected to the input waveguide and output connected to the output waveguides via bending waveguide. Altering the length of the middle coupling area can realize the 1X2, 1X3, 1X4 and 1X5 power separation of light signal, and perform the filtering and selective output of light signal in different wavelength. The present invention is based on 2D silicon base photon crystal structure, so that the present invention has the advantages of small size, low loss, simple making process and other advantages, and is suitable for new generation of large scale light integration and light communication.

The invention discloses a connection flux statistical information extraction method and a VLSI (Very Large Scale Integration) structure. The connection flux statistical information extraction method comprises the following steps: simultaneously scanning two adjacent rows of a binary image; judging whether a connected area exists between the current row and the previous row; if yes, merging the area, connected with the current row, in the previous row into the current row according to an equivalent run pair merging rule; meanwhile, marking the area, not connected with the current row, in the previous row as an ended area, and outputting the information of the ended area; then updating the run number of the connected area in the current row; when the current row is the last one, according to the equivalent run pair merging rule, merging the connected area in the current row, then marking the merged and obtained area as the ended area, and outputting the information of the ended area, so as to obtain the connection flux statistical information. The connection flux statistical information extraction method disclosed by the invention can quickly process the binary image and extract the connection flux statistical information of the binary image, and is low in hardware resource consumption.

The invention discloses an on screen display (OSD) control display method and a device based on an advanced extensible interface (AXI) bus protocol. After OSD data is selected through an OSD data channel, flexible modification and display on an OSD map layer can be achieved by utilizing of read-write cache first input, first output (FIFO) and an advanced extensible interface (AXI) bus arbitration module, wherein video memory is shared by the OSD data, and at the same time, a path of video interfaces is arranged on the exterior so as to achieve the picture-in-picture effect. A bilinearity Scaler zoom module is used for carrying out zoom process on an OSD image with random proportions, and at last an OSD and video overlap module is utilized to achieve abundant and diversified display modes of the OSD. According to the OSD control display method and the device based on an AXI bus protocol, the design of very large scale integration (VLSI) is achieved, intensive study is carried out on key points in the VLSI, and code compiling and the function of the code compiling of a Verilog-hardware description language (HDL) are achieved on the basis of the intensive study on the key points in the VLSI.

The invention relates to a dual-threshold domino circuit with an optimal gate control vector used in low-power consumption VLSI (very large scale integration), i.e., when the dual-threshold domino circuit is in a dormant state, leakage power consumption of the domino circuit is reduced by utilizing the optimal gate control vector. In the invention, after the dual-threshold domino circuit just enters the dormant state from an operating state, a chip is kept at unchanged high temperature owing to short time, and at the moment, the leakage power consumption can be effectively reduced by utilizing the gate control vector with a high-level input signal and a high-level clock signal; and after the dual-threshold domino circuit is changed into the dormant state from the operating state for a period of time, the temperature of the chip is reduced to room temperature, and at the moment, the leakage power consumption can be more effectively reduced by utilizing the gate control vector with a low-level input signal and a low-level clock signal.

The invention relates to a satisfiability problem (SAT)-based manufacturable hot spot disconnecting and rerouting method which belongs to the very large scale integration (VLSI) physical design field. The method is characterized in that the topological structure constraint of hot spot and connectivity constraint of line networks are used as directions, SAT constraints are established in all the rerouted line networks in the region, the constraint problem is solved to route a plurality of line networks at the same time, and the generation of a new manufacturable hot spot can be effectively controlled. Meanwhile, as the method adopts the region-based disconnecting and rerouting strategy to ensure the efficiency; and the hot spot elimination ratio in the layout can be greatly increased through the dynamic marginal adjustment and the two-stage disconnecting and rerouting process involving offset. The experimental result proves that the method can fast and effectively eliminate the manufacturable hot spot in the layout; compared with the traditional disconnecting and rerouting algorithm aiming at the hot spot, the method has better convergence, and can more effectively avoid the generation of the new hot spot and ensure to find an existing and feasible rerouting scheme.

The invention discloses a VLSI (Very Large Scale Integration) standard unit placement method based on an electric field energy modeling technology. The method establishes the electric field energy model of a problem, and a global density function and an analytical solution of a Poisson equation are utilized to solve a VLSI standard unit global placement problem. The method has the technical key point that: (1) analogy is carried out on the placement problem and a static electricity system, a unit is taken as an electric charge, original density constraint is converted into zero potential energy constraint, a differential equation is constructed, an explicit expression is solved for the differential equation to more accurately describe the potential energy constraint, then, a penalty function method is adopted to convert the wire length target and the potential energy constraint of the VLSI global placement into an unrestraint nonlinear placement problem, and a proper optimization technology is selected for optimization; and (2) different from a situation that a method for evenly dividing bin is used for obtaining a discrete density function value, the method disclosed by the invention is characterized in that the global density expression of the unit and the overlapping constraint of a whole placement area is calculated so as to more accurately describe the distribution situation of the unit on the placement area.

The invention discloses a design method of a parallel array-type intraframe prediction decoder. By adopting an intraframe parallel array technique, the parallel decoding of the sub-macro-blocks is achieved, and the decoding efficiency of the intraframe macro-blocks is improved. By adopting a multi-prediction mode multiplexing technique, the intraframe prediction calculation units PE are realized.Four PE units in each sub-macro-block predict four pixels in parallel. By adopting a self-adapting production line technique, the prediction decoding of the self-adapting production line of the sub-macro-blocks in the PE array is achieved. By adopting a parallel prediction sequence technique, the prediction sequence of the parallel decoding is realized according to the dependency relationship of the reference pixels, and the data conflict is solved. By adopting a double-sliding window mechanism, the requirement of double PE arrays on the parallel decoding of the sub-macro-blocks is met, and the parallel synchronization of the PE arrays is coordinated. By the method, the requirements on the decoding of the high-definition and ultra-high-definition video can be satisfied; and the decoding efficiency and performances are improved.

A wavelength-tunable laser system includes an optical fiber collimator array having at least two ports, an optical amplifier connected to one port of an optical fiber, an optical coupler for coupling light incident from the optical amplifier and transmitting the coupled light to another port, a diffraction grating plate for guiding each wavelength component of light incident from the optical fiber collimator array in a different direction, and an Opto-Very Large Scale Integration (Opto-VLSI) processor.

The invention provides a method for realizing image compression based on folding flow line wavelet transformation, and particularly relates to a technology based on folding flow lines. The folding flow lines adopt a uniform architecture very large scale integration (VLSI) for the transformation of various wavelets, so that the resource consumption is reduced by structuring the shortest iterative calculation path for wavelet transformation, and the hardware utilization efficiency is improved by simplifying improving steps and adopting a single-shot input structure. An experiment result shows that for the same image, if the structure and a traditional long flow line structure are adopted for an experiment, the method is more excellent in resource consumption and hardware utilization rate.

The invention relates to a VLSI (Very Large Scale Integration) layout design method for solving a given border constraint. By adopting a strategy of randomization, a random initial layout is used as an initial solution of a hybrid simulated annealing algorithm. The border constraint is proposed as a violating penalty function of a target function. The violating penalty function introduces a length function considering each module over a given border based on an area function considering a minimum rectangle enclosing candidate layout results over the given border. Based on the hybrid simulated annealing algorithm, a feasible solution strategy is introduced. Solutions produced via a series B*-tree disturbance are feasible solutions, so that better solutions can be obtained from the algorithm. The optimal solution is searched by introducing the hybrid simulated annealing algorithm, and a new temperature update formula is adopted in the algorithm. The new temperature update formula shortens the time for solving the spatial search phase, and more time is used for searching the better solutions in the temperature rise phase, so that the probability of finding the optimal solution is improved.

A method and system are provided for tuning parameters of a synthesis program for a design description. The method includes (a) ranking individual parameter impact by evaluating a design-cost function of each of the parameters. The method further includes (b) creating a set of possible parameter combinations that is ordered by an estimated-cost function. The method additionally includes (c) selecting, from the set of possible parameter combinations, top-k scenarios having best estimated costs to form a potential set, and running at least some of the top-k scenarios in parallel through the synthesis program. The method also includes (d) repeating steps (b)-(c) for one or more iterations until at least one of a maximum iteration limit is reached and an exit criterion is satisfied.

The invention relates to VLSI (Very Large Scale Integration) design method for two-dimensional discrete wavelet transform. A discrete wavelet transform framework of nine seventh wavelet is employed and comprises an input data storage module, a line transform module, a transposition module, a row transform module and a zoom module, data firstly and sequentially enters the data storage module, then is sent to subsequent modules by the storage module for sequential processing and is finally output by the zoom module, all multiplication is substituted by shift operation of an addition and subtraction method, the line transform module employs a three-input wavelet transform calculation method, and the row transformer module uses a two-input calculation method.