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Photoplethysmography (PPG) is one of the prime non-invasive vascular assessment methodology adopted in modern clinical practice. This paper proposes a modification of delta modulation for effective compression of PPG signal for real time measurements and monitoring applications. Based on the energy content and fluctuations, the PPG signal was windowed and categorized into ‘complex’ or ‘plain’ zones...
An offline ECG compression technique, based on encoding of successive sample differences is proposed. The encoded elements are generated through four stages, viz., down sampling of raw samples, normalization of successive sample differences; data grouping; magnitude and sign encoding; and finally zero element compression. Initially, the compression algorithm is validated with short duration raw ECG...
Thyristor Random Access Memory (T-RAM) is an ideal candidate for application as an embedded memory due to its substantially better density vs. performance tradeoff and logic process compatibility. T-RAM memory embedded in a 32nm logic process with read and write times of 1ns and a bit fail rate less than 0.5ppm is reported for the first time. T-RAM memory cell median read current of 250μA/cell at...
We present a general approach for automatically isolating the root causes of memory-related bugs in software. Our approach is based on the observation that most memory bugs involve uses of corrupted memory locations. By iteratively suppressing (nullifying) the effects of these corrupted memory locations during program execution, our approach gradually isolates the root cause of a memory bug. Our approach...
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