Liangchen Zheng

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The Time-triggered Message-triggered Object (TMO) programming and specification scheme came out of an effort to remove the limitations of conventional object structuring techniques in developing real-time (RT) distributed computing components and composing distributed computing applications out of such components and others. It is a natural and(More)
This paper discusses the benefits of exploiting 1) the principle of global-time-based coordination of distributed computing actions (TCoDA) and 2) a high-level component-/object-based programming approach in developing real-time embedded computing software. The benefits are discussed in the context of a concrete case study. A new major type of distributed(More)
We present a new class of multimedia applications where the exploitation of the principle of global-time-based coordination of distributed actions (TCoDA) is compelling. In these applications, multiple small-footprint PCs, each equipped with its own speakers, act as instrument players or singers forming an ensemble. Each player PC obtains its piece of the(More)
Universal middleware bridge (UMB) provides seamless interoperation among heterogeneous home network middleware. There have been high demands for the UMB components (UMB core and adaptors) to have fault- tolerance capabilities. This paper presents a TMO structuring approach together with new implementation techniques for the fault-tolerant TMO-replica(More)
An attractive program component model for use in constructing reliable networks of sensor nodes communicating via wireless channels is the time-triggered function (TTF). In general, when an application is structured as a network of TTFs, the timing behavior of the application can be analyzed relatively easily. The TTF network programming model has been(More)
The performance trade-offs associated with low side low voltage integrated thin resurf LDMOS (lateral FET) devices are discussed. It is shown that, in junction isolation (JI) technologies using a p-substrate, a suitably optimized isolated drain LDMOS device architecture offers significant benefits over the non-isolated drain low side device, especially for(More)
Programming and composing deterministic distributed real-time systems is becoming increasingly important, yet remains difficult and error-prone. An innovative approach to such systems is the general-form timeliness-guaranteed design paradigm, which is the basis for the time-triggered message-triggered object (TMO) programming and system specification(More)
The development of real-time systems that are distributed over a wide area is a significant problem that has challenged researchers for many years. Such systems require precise timing of actions throughout, but wide area networks tend to have variable delays that greatly reduce determinism. The framework described here supports the composition of wide-area(More)
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