Ji Hwan Chun

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Oscillation Based Test (OBT) techniques in the past have focussed on detecting the existence of catastrophic and parametric faults. Recent work on Predictive Oscillation Based Test (POBT) has used OBT techniques to predict the performance parameters of the Circuit Under Test (CUT). However, this technique cannot be used to predict the performance parameters(More)
Accurate generation of circuit specifications from test signatures is a difficult problem, since analytical expressions cannot precisely describe the nonlinear relationships between signatures and specification. In addition, it is difficult to precisely control physical factors in Built-in Self-test (BIST) circuitry, which can cause errors in the(More)
Signatures used in low-cost schemes for testing analog and mixed-signal circuits do not directly represent or characterize the behavior of the device-under-test (DUT), since the lossy compression or complicated mathematical relations used can result in the loss of physical performance information. We develop a novel scheme where the signature is generated(More)
Our method extracts the linearity of on-chip high speed data converters with minimum area overhead. With a loop-back setup in the presence of noise, differential nonlinearities (DNLs) and integral nonlinearities (INLs) of analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) can be extracted by the proposed method. Our approach(More)
By analyzing the effect of FDI in Jiangsu province on logistics through the empirical analysis of location choice of FDI of the logistics industry, several factors which attract FDI had been found, co-integration test shows FDI of the logistics industry has a co-integration relationship with the degree of openness, scale of economic, labor cost and(More)
This paper clarifies the basic concepts of ERP system and axiomatic design, ERP system is the system to combine the needs of customers, the management and business activities of the enterprise itself and vendor information together, axiomatic design has two axioms including independent axiom and information axiom, then in order to achieve effective(More)