The paper describes techniques which have been developed to simplify the customization of the PURE operating system family for embedded systems and can be applied to almost any embedded software intended for reuse. The approach is based on feature modeling and the use of aspect-oriented programming and supported by a complete tool chain.

We introduce a scalable, extensible object-oriented system developed primarily for signal processing and synthesis for musical and multimedia applications. The main performance issue with these applications concerns functions of discrete-time. Novel techniques exploit finegrain parallelism in the calculation of these functions to allow users to express them at a high-level in C++. New schedulin...

Control Circuits can be described using a top-down approach with the aid of Hierarchical Graph-Schemes (HGSs). The implementation of HGSs in a finegrain FPGA has been done using a Hierarchical Finite State Machine structure where each sub-algorithm implementation is independent from the others. Static and dynamically reconfigurable implementations using the XC6200 FPGA have been obtained by app...

We propose a new processing paradigm, called the Expandable Split Window (ESW) paradigm, for exploiting finegrain parallelism. This paradigm considers a window of instructions (possibly having dependencies) as a single unit, and exploits fine-grain parallelism by overlapping the execution of multiple windows. The basic idea is to connect multiple sequential processors, in a decoupled and decent...

The CAT imaging telescope, recently built on the site of the former solar plant “Thémis” (French Pyrénées), observed γ-rays from the Crab nebula from October 1996 to March 1997. This steady source, often considered as the standard candle of very-high-energy γ-ray astronomy, is used as a test-beam to probe the performances of the new telescope, particularly its energy threshold (220GeV at 20 zen...

This paper presents Digito, a gesturally controlled virtual musical instrument. Digito is controlled through a number of intricate hand gestures, providing both discrete and continuous control of Digito’s sound engine; with the finegrain hand gestures captured by a 3D depth sensor and recognized using computer vision and machine learning algorithms. We describe the design and initial iterative ...

In this paper we explore the use of Priority-progress streaming (PPS) for live video streaming applications with tight latency constraints. PPS is a technique for the delivery of continuous media over variable bit-rate channels. It is based on the simple idea of reordering media components within a time window into priority order before transmission. The main concern when using PPS for live vid...

MPEG-4 Scalable Lossless Coding (SLS) is one of the latest extensions to the MPEG-4 audio coding standard. It provides a scalable lossless extension of the well-known MPEG4 AAC codec. The lossless enhancement is performed in a finegrain scalable way, starting from the AAC core signal in small steps all the way up to a numerically lossless representation, thus also including near-lossless compre...

The Mobile Multimedia Modem (M3)-DSP is based on a scalable, highly parallel DSP platform concept capable of delivering the processing power to create software solutions for tasks that are currently considered ASIC-only domains, e.g. xDSL or IEEE 802.11a. The platform, consisting of the parallel signal processing engine and an Input-/ Output Processor (IOP) is introduced with features which are...