Mattias O'Nils

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We have separated the information required for HW/SW interface synthesis into three parts, the protocol specification, the operating system related information, and the processor related information. From these inputs a synthesis tool generates (a) device driver functions or (b) a combination of device driver functions and a DMA controller, depending on a(More)
We present a method for generation of the software part of a HW/SW interface (i.e. the device drivers), which separates the behaviour of the interface from the architecture dependent parts. We do this by modelling the behaviour in ProGram (a grammar based protocol specification language) and capture the processor and OS kernel parts in separate libraries.(More)
Starting from an architecture and implementation independent specification of hardware/software communication protocols, we present a protocol synthesis method that generates a mixed hardware and software implementation. For the hardware part, the synthesis method will generate an application specific direct memory access (DMA) controller for each protocol(More)
ProGram, a grammar based communication protocol description language, is used for architectural independent modelling of device drivers and bus interfaces for mixed hardwarehoftware systems. The specijication of the protocol is separated from the description of processor bus interfaces and operating system device driver interfaces, which ensures a high(More)
In this paper we have explored different possibilities for partitioning the tasks between hardware, software and locality for the implementation of the vision sensor node, used in wireless vision sensor network. Wireless vision sensor network is an emerging field which combines image sensor, on board computation and communication links. Compared to the(More)
We present a tool and a methodology for estimating the memory storage requirement for synchronous real-time video processing systems. Typically, a designer will use the feedback information from this estimation to select the most optimal execution order for software processors or space to time mapping for hardware. We propose to start from a conceptual(More)
Access to the published version may require subscription. A visual sensor network (VSN) is a distributed system of a large number of camera nodes and has useful applications in many areas. The primary difference between a VSN and an ordinary scalar sensor network is the nature and volume of the information. In contrast to scalar sensor networks, a VSN(More)
Implementing real-time video processing systems put high requirements on computation and memory performance. FPGAs have proven to be effective implementation architecture for these systems. However, the hardware based design flow for FPGAs make the implementation task complex. The system synthesis tool presented in this paper reduces this design complexity.(More)