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Cost has been a major driving force in the development of the flash-memory technology. Because of this, serious challenges are now faced for future products on reliability and performance requirements. In this work, we propose a management strategy to resolve the reliability and performance problems of many flash-memory products. A three-level address translation architecture with an adaptive block...
Although memory is an important constraint in embedded sensor nodes, existing embedded applications and systems are typically designed to work under the memory constraints of a single platform and do not consider the interplay between memory and flash storage. In this paper, we present the design of a memory-adaptive flash-based embedded sensor system that allows an application to exploit the presence...
We introduce the Egs mote platform based on the Cortex M3 microcontroller that focuses on medical sensing applications. Egs uses an Atmel SAM3U microcontroller that runs up to 96 MHz and has up to 52 KB of RAM and 256 KB of Flash. Egs combines this microcontroller with two radios (802.15.4 and Bluetooth), external flash, on board sensors, and a LCD touchscreen to enable a rich set of wireless sensing...
Solid State Drives (SSD's) have shown promise to be a candidate to replace traditional hard disk drives, but due to certain physical characteristics of NAND flash, there are some challenging areas of improvement and further research. We focus on the layout and management of the small amount of RAM that serves as a cache between the SSD and the system that uses it. Of the techniques that have previously...
Wireless sensor networks are built from highly resource constrained embedded systems. Supporting multiple applications on the sensor network is a desirable goal, however, these constraints make supporting multiple concurrent applications on each node difficult. Therefore, we propose a dynamic application switching approach where only a single application is active on each sensor node at a time. In...
This paper gives a novel wavelet image two-line (Wi2l) coder that is designed to fulfill the memory constraints of a typical wireless sensor node. The algorithm operates line-wisely on picture data stored on the sensor's flash memory card while it requires approximatively 1.5 kByte RAM to compress a monochrome picture with the size of 256 times 256 Bytes. The achieved data compression rates are the...
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