Global on-chip data communication is becoming a concern as the gap between transistor speed and interconnect bandwidth increases with CMOS process scaling. In this paper a low-swing transceiver for 10mm long 0.54μm wide on-chip interconnect is presented, which achieves a similar data rate as previous designs (a few Gb/s), but at much lower power than recently published work. Both low static pow...

This work presents a definition of functional factors of the telemanipulation system and propose a factors’ classification. Using this classification an experimental study was carried out in order to find the effect of system bandwidth in task performance. Three principal factors affected by system bandwidth were studied: Image resolution, frame rate and actualization rate of control commands. ...

Optical traps are useful for studying the effects of forces on single molecules. Feedback-based force clamps are often used to maintain a constant load, but the response time of the feedback limits bandwidth and can introduce instability. We developed a novel force clamp that operates without feedback, taking advantage of the anharmonic region of the trapping potential where the differential st...

Vibrations can significantly enhance touch perception for virtual environment applications with minimal design complexity and cost. In order to create realistic vibrotactile feedback, we collected vibrations, forces, and velocities during various tasks executed with a stylus: tapping on materials, stroking textures, and puncturing membranes. Empirical models were fit to these waveforms and a li...

We demonstrate feedback-optimized focusing of spatially coherent polychromatic light after transmission through strongly scattering media, and describe the relationship between optimized focus intensity and initial far-field speckle contrast. Optimization is performed using a MEMS spatial light modulator with camera-based or spectrometer-based feedback. We observe that the spectral bandwidth of...

A feedback-based congestion control algorithm is described which improves transmission control protocol (TCP) performance over wireless networks. An explicit feedback scheme is proposed for the fair sharing of the bandwidth by modifying the receiver’s advertised window in TCP acknowledgments returning to the source. Using the feedback information, the proposed algorithm adapts the window size t...

In Atomic Force Microscopy (AFM), the force between the measurement tip and the sample is controlled in a feedback loop to prevent damage to the tip and sample during imaging, and to convert the measurement of the tip-sample force into an estimation of the sample topography. Dynamical uncertainties of the system pose a strong limitation on the achievable control bandwidth, and on the accuracy o...

In this paper, we address some of the problems concerning RTCP scalability in large multicast groups. The problems are summarised as the increased storage state maintained by every member about every other member in the group, the feedback delay, and the bandwidth usage problem especially for receivers that obtain incoming RTCP reports through low bandwidth links. We designed a scheme to tackle...

Quality of radiation conversion under four-wave mixing on thermal nonlinearity with feedback for both signal and object waves has been investigated at high reflection coefficients. It shown that the optimal operating mode a converter is in which pumping have equal intensities there compensation phase shift arising from wave self-action. In this converter, as compared case absence waves, signifi...