Sunil R. Das

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Digital watermarking is becoming more and more important for protecting the authenticity of multimedia objects as they become easier to copy, exchange, and modify. Several watermarking schemes have been proposed in recent years, but most of them deal with still images, only some being extended over to the temporal domain for video watermarking. But again(More)
The design of space-efficient support hardware for built-in self-testing (BIST) is of critical importance in the design and manufacture of VLSI circuits. This paper reports new space compression techniques which facilitate designing such circuits using compact test sets, with the primary objective of minimizing the storage requirements for the circuit under(More)
Ab8t~ac t In this paper, we propose a new built-in selfdiagnosis (BISD) method to simultoneoualy diagnose and repair spatially distributed memory modules with different sizes. Based on the serial interfacing technique, the serial fault masking effect is observed and a bi-directional serial interfacing technique is proposed to deal with such an issue. B y(More)
This paper discusses new space compression techniques for built-in self-testing (BIST) of VLSI circuits based on the use of compact test sets to minimize the storage requirements for the circuit under test (CUT) while maintaining the fault coverage information. The techniques utilize the concepts of Hamming distance and sequence weights along with failure(More)
The design of efficient time compression support hardware for built-in self-testing (BIST) is of great importance in the design and manufacture of VLSI circuits. The test data outputs in BIST are ultimately compressed by the time compaction hardware, commonly called a response analyzer, into signatures. Several output response compaction techniques to aid(More)