Faculty Publications
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Item Optimized low power low cost pulse oximeter for remote patient monitoring(IEEE Computer Society, 2013) Agrawal, N.; Agrawal, S.; Kumar, A.; Ramesh Kini, R.M.Pulsoximeter is a medical instrument for monitoring the blood oxygenation of a patient. This type of monitoring is especially useful for new born infants, during surgery and in determining Hypoxia. Blood oxygen content is an important indicator of human patient health and during anaesthesia. This aspect can be monitored by measuring the oxygen percentage in the blood timely and accurately with the help of our device. As our device is non invasive it proves out to be comfortable for the new born. Our slight modification to the standard approach that utilises pulse oximeter or Photoplethysmograph for this purpose, assures considerable decrease in current consumption thereby reducing overall power consumption which makes our device a low power device that can be used with much ease at places where power consumption is an issue. Patient's health parameters can be continuously monitored over a low power wireless network which aids in mobile monitoring. © 2013 IEEE.Item Low-cost dynamometers - A grip measurement and logging solution(IEEE Computer Society, 2013) Hasandka, A.; Ghosh, A.; Shetty, P.K.; Ramesh Kini, R.M.The aim of the project is to develop a grip measurement and data logging product which can be used as an exercise ball for patients who have undergone orthopedic surgery and as a recovery quantification tool for the doctor treating patients with the same condition. It provides the doctor with a measure of how effective the surgery has been and how well the patient has been recovering. and allows the doctor to quantify certain each force. The device logs the pressure applied on the ball for a period of time as a part of the recovering exercise and also has an attachment to measure the grip pressure between adjacent fingers and the thumb and other fingertips. The doctor has an interface on the other side on a computer that shows the logged data and allows the device to be put in various different modes to measure the different forces. It stores the parameters after every examination. © 2013 IEEE.Item Implementation of comprehensive address generator for digital signal processor(2013) Ramesh Kini, R.M.; Sumam David, S.The performance of signal-processing algorithms implemented in hardware depends on the efficiency of datapath, memory speed and address computation. Pattern of data access in signal-processing applications is complex and it is desirable to execute the innermost loop of a kernel in a single-clock cycle. This necessitates the generation of typically three addresses per clock: two addresses for data sample/coefficient and one for the storage of processed data. Most of the Reconfigurable Processors, designed for multimedia, focus on mapping the multimedia applications written in a high-level language directly on to the reconfigurable fabric, implying the use of same datapath resources for kernel processing and address generation. This results in inconsistent and non-optimal use of finite datapath resources. Presence of a set of dedicated, efficient Address Generator Units (AGUs) helps in better utilisation of the datapath elements by using them only for kernel operations; and will certainly enhance the performance. This article focuses on the design and application-specific integrated circuit implementation of address generators for complex addressing modes required by multimedia signal-processing kernels. A novel algorithm and hardware for AGU is developed for accessing data and coefficients in a bit-reversed order for fast Fourier transform kernel spanning over log 2 N stages, AGUs for zig-zag-ordered data access for entropy coding after Discrete Cosine Transform (DCT), convolution kernels with stored/streaming data, accessing data for motion estimation using the block-matching technique and other conventional addressing modes. When mapped to hardware, they scale linearly in gate complexity with increase in the size. © 2013 Copyright Taylor and Francis Group, LLC.