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277results about How to "Increase clock frequency" patented technology

Unit for processing numeric and logic operations for use in central processing units (CPUS), multiprocessor systems, data-flow processors (DSPS), systolic processors and field programmable gate arrays (FPGAS)

An expanded arithmetic and logic unit (EALU) with special extra functions is integrated into a configurable unit for performing data processing operations. The EALU is configured by a function register, which greatly reduces the volume of data required for configuration. The cell can be cascaded freely over a bus system, the EALU being decoupled from the bus system over input and output registers. The output registers are connected to the input of the EALU to permit serial operations. A bus control unit is responsible for the connection to the bus, which it connects according to the bus register. The unit is designed so that distribution of data to multiple receivers (broadcasting) is possible. A synchronization circuit controls the data exchange between multiple cells over the bus system. The EALU, the synchronization circuit, the bus control unit, and registers are designed so that a cell can be reconfigured on site independently of the cells surrounding it. A power-saving mode which shuts down the cell can be configured through the function register; clock rate dividers which reduce the working frequency can also be set.
Owner:PACT +1

Image processing circuit, image display apparatus, and image processing method

Aspects of the invention can provide an image processing circuit for gray scale correction, an image display apparatus, and an image processing method that allow reduction in the storage capacity needed for storing correction characteristics data without increasing clock rate in relation to interpolation processing of correction characteristics. A exemplary image processing circuit according to the invention can be applied, for example, to color correction or gamma correction of color image data. Gray scale correction characteristics data for a number of gray scale levels that is less than the number of gray scale levels of input image data can be stored in first and second lookup table storing units. Considering a gray scale value of a pixel that is being considered for gray scale correction processing as an input gray scale value, the first and second lookup-table storing units are referred to, obtaining an output gray scale value corresponding to the input gray scale value and an output gray scale value corresponding to an adjacent input gray scale value. An adjacent gray scale value refers to a gray scale value that is higher by one or lower by one than another input gray scale value. Then, output gray scale values between these two adjacent output gray scale values can be calculated by linear interpolation, obtaining output values for all input gray scale values. Subsequently, gray scale correction can be performed for each pixel of input image data, outputting corrected image data.
Owner:BOE TECH GRP CO LTD

Method and apparatus for high performance branching in pipelined microsystems

A pipelined processor includes a branch acceleration technique which is based on an improved branch cache. The improved branch cache minimizes or eliminates delays caused by branch instructions, especially data-dependent unpredictable branches. In pipelined and multiply pipelined machines, branches can potentially cause the pipeline to stall because the branch alters the instruction flow, leaving the prefetch buffer and first pipeline stages with discarded instructions. This has the effect of reducing system performance by making the branch instruction appear to require multiple cycles to execute. The improved branch cache differs from conventional branch caches. In particular, the improved cache is not used for branch prediction, but rather, the improved branch cache avoids stalls by providing data that will be inserted into the pipeline stages that would otherwise have stalled when a branch is taken. Special architectural features and control structures are supplied to minimize the amount of information that must be cached by recognizing that only selected types of branches should be cached and by making use of available cycles that would otherwise be wasted. The improved branch cache supplies the missing information to the pipeline in the place of the discarded instructions, completely eliminating the pipeline stall. This technique accelerates performance, especially in real-time code that must evaluate data-dependent conditions and branch accordingly.
Owner:ROUND ROCK RES LLC
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