XPAND: an efficient test stimulus compression technique

2006 ◽  
Vol 55 (2) ◽  
pp. 163-173 ◽  
Author(s):  
S. Mitra ◽  
K.S. Kim
Keyword(s):  
Test Stimulus ◽  
Compression Technique ◽  
Efficient Test

SoC Test Data Compression Technique Based on RLE-G

2010 ◽  
Vol 439-440 ◽  
pp. 1595-1600
Author(s):  
Chun Jian Deng ◽  
Liu Wei ◽  
Xi Feng Zheng ◽  
Liang Yang
Keyword(s):  
Data Compression ◽  
Test Data ◽  
Test Time ◽  
Test Data Compression ◽  
Compression Technique ◽  
Current Test ◽  
Soc Test ◽  
Efficient Test ◽  
Data Volume ◽  
Test Vectors

Test data compression has been an effective way to reduce test data volume and test time, as well as to solve automatic test equipment (ATE) memory and bandwidth limitation. We analyze the limitations of current test data compression algorithm and draw on the previous experience to deduce an optimal compression coding model suitable for SoC test data. In addition, in this paper we make full use of the relevance of the test vectors and the advantages of statistical coding to present an efficient test data compression method RLE-G based on the coding model, and give the RLE-G the optimal compression efficiency of the boundary conditions and realization steps. The experimental results for ISCAS 89 benchmark circuits demonstrate RLE-G have the excellent advantages of high compression ratio.

scholarly journals Efficient Test Data Compression for SoC through ASRL with Improved Dictionary based Compression Technique

2019 ◽  
Vol 8 (11) ◽  
pp. 3591-3597
Keyword(s):  
Embedded System ◽  
Data Compression ◽  
Test Data ◽  
Compression Ratio ◽  
Test Data Compression ◽  
Bandwidth Utilization ◽  
Compression Technique ◽  
Memory Size ◽  
Efficient Test ◽  
Effective Manner

Data compression techniques are explored in this paper, through which system memory size gets reduced in an effective manner. The size of the memory is always a key constraint in the embedded system. Larger memory size increases the bandwidth utilization which raises the cost of hardware and data transmission. It is difficult to transfer large data through the network. Data compression encoding technique is utilized to minimize the data size. The redundant character is reduced or encoding the bits in data is done to reduce the data size. The proposed system focused on lossless compression where the original information of the data is available even though the data size is compressed. The data compression is done through a dictionary-based compression algorithm and Alternating Statistical Run Length code (ASRL). In the existing system of ASRL, the compression ratio is about 65.16% and 67.18% for two benchmark circuits S5378 &S9234. The compression ratio of the test data is increased by combining the ASRL and Improved Dictionary-Based compression Technique. The proposed combined technique provides 80.25%& 82.5% compression ratio for two benchmark circuits S5378 &S9234. This reduces the power dissipation problem in the circuit and thereby the area of the circuit gets reduced.

Formulation and Evaluation of Galantamine Hydrobromide Floating Matrix Tablet

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Poreddy Srikanth Reddy ◽  
Penjuri Subhash Chandra Bose ◽  
Vuppula Sruthi ◽  
Damineni Saritha
Keyword(s):  
Sodium Alginate ◽  
Xanthan Gum ◽  
Lag Time ◽  
Matrix Tablets ◽  
In Vitro Dissolution ◽  
Matrix Tablet ◽  
Compression Technique ◽  
Weight Variation ◽  
The Matrix

The aim of the present work was to prepare floating tablets of galantamine HBr using sodium alginate and xanthan gum as matrix forming carriers. Galantamine HBr is used for the treatment of mild to moderate Alzheimer's disease and various other memory impairments, in particular those of vascular origin. The matrix tablet formulations were prepared by varying the concentrations of sodium alginate and xanthan gum. The tablets were prepared by direct compression technique using PVP K-30 as a binder and sodium bicarbonate for development of CO2. The prepared matrix tablets were evaluated for properties such as hardness, thickness, friability, weight variation, floating lag time, compatibility using DSC and FTIR. In vitro dissolution was carried out for 12 hrs in 0.1N HCl at 37±0.5 ºC using USP paddle type dissolution apparatus. It was noted that, all the prepared formulations had desired floating lag time and constantly floated on dissolution medium by maintaining the matrix integrity. The drug release from prepared tablets was found to vary with varying concentration of the polymers, sodium alginate and xanthan gum. From the study it was concluded that floating drug delivery system for galantamine HBr can be prepared by using sodium alginate and xanthan gum as a carrier.

Severe plastic deformation of Al-1%Cu Alloy processed by a Simple Cyclic Extrusion Compression technique

2018 ◽  
Vol 1 (1) ◽  
pp. 77-90
Author(s):  
Walaa Abdelaziem ◽  
Atef Hamada ◽  
Mohsen A. Hassan
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Deformation Behavior ◽  
Cast Alloy ◽  
Surface Hardness ◽  
Grain Structure ◽  
Compression Technique ◽  
Cu Alloy ◽  
Cyclic Extrusion Compression

Severe plastic deformation is an effective method for improving the mechanical properties of metallic alloys through promoting the grain structure. In the present work, simple cyclic extrusion compression technique (SCEC) has been developed for producing a fine structure of cast Al-1 wt. % Cu alloy and consequently enhancing the mechanical properties of the studied alloy. It was found that the grain structure was significantly reduced from 1500 µm to 100 µm after two passes of cyclic extrusion. The ultimate tensile strength and elongation to failure of the as-cast alloy were 110 MPa and 12 %, respectively. However, the corresponding mechanical properties of the two pass CEC deformed alloy are 275 MPa and 35%, respectively. These findings ensure that a significant improvement in the grain structure has been achieved. Also, cyclic extrusion deformation increased the surface hardness of the alloy by 49 % after two passes. FE-simulation model was adopted to simulate the deformation behavior of the material during the cyclic extrusion process using DEFORMTM-3D Ver11.0. The FE-results revealed that SCEC technique was able to impose severe plastic strains with the number of passes. The model was able to predict the damage, punch load, back pressure, and deformation behavior.

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