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The paper presents a new technique to design signed and unsigned truncated multipliers. Simple formulae are developed in the paper to describe the truncated multiplier with minimum mean square error for every inputspsila bit-width. With respect to previously proposed techniques, our analytical approach is more general and improves the accuracy of the multiplier. We have also compared the accuracy...
Entropy coding is a fundamental stage in all video compression algorithms in terms of compression efficiency and error resilience. In this paper we propose and optimize a digital signal processor (DSP)-based implementation of the CAVLC tools for the H.264 Baseline encoder. As result, we have been able to generate the bit stream and supply bit rate result: the LETI encoder is able to achieve high compression...
In this paper, an integrated solution of fault detector for motor drive applications is presented. The circuit is developed in monolithic high voltage technology. The goal of the IC is the detection of different types of fault which can affect the three phase inverter or the motor in electrical drive systems. The fault condition is detected sensing a shunt resistor put on the DC+ bus of the inverter...
Digital signal processing (DSP) algorithms exhibit an increasing need for the efficient implementation of trigonometric functions, coordinate transformations or rotations of complex valued phasors. Popular application examples are algorithms used in digital communication technology and in adaptive signal processing. The trigonometric functions like cosine and sine form the building block of certain...
Two dimensional discrete wavelet transform (2DDWT) has been adopted as a coding tool of JPEG 2000 image coding and MPEG-4 still texture coding. To make it suitable for real-time image processing applications, it is essential to develop custom VLSI chips for computation of 2D-DWT. A new high efficient architecture is proposed for 2D 1-level DWT, with the feature of original data is scanned by group...
Multiplication operations are the normal operations in operating systems or scientific calculations. Multipliers embedded in processors, DSP or SoC are well optimized for best performance, and they are sensitive to test overhead. Instruction level test is a popular functional test approach for microprocessors test, and it can get satisfactory test results. But for the multipliers, one important part...
Microprocessor and DSP are optimized to perform operations on data having the same size of native wordlength. Their performances decrease when shorter data must be processed. In fact, operations on a short data have the same complexity native wordlength data and data resources are not fully exploited. Recently different solutions have been proposed to overcome this problem. Great attention has been...
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