The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we propose a virtualization architecture for the multi-core embedded system to provide more system reliability and security while maintaining the same performance without introducing additional special hardware supports or having to implement complex protection mechanism in the virtualization layer. Virtualization has been widely used in embedded systems, especially in consumer electronics,...
A virtualization layer makes it possible to compose multiple functionalities on a multi-core processor with minimum modifications of OS kernels and applications. A multi-core processor is a good candidate to compose various software independently developed for dedicated processors into one multi-core processor to reduce both the hardware and development cost. In this paper, we present SPUMONE, which...
Multi-core processors are being increasingly adopted for embedded systems because they improve performance, power consumption and lower development cost. Composing multiple operating systems on a multi-core processor enhances the reusability of software when developing rich functional embedded systems. Multiple OS environments enable the product to use two versions of an operating system at the same...
A hypervisor consolidates multiple numbers and multiple types of OSes into a single machine by multiplexing a real machine into a number of virtual machines (VMs). An example the typical application of a hypervisor is server consolidation which uses the same or similar types of VMs and OSes (symmetric). Another application is accommodating different types of OSes (asymmetric): open platform and closed...
In this paper, a runtime self-diagnosis and self-recovery infrastructure is presented for embedded systems. Different from existing methods of off-line tracing system logs, our research focuses on analyzing system kernel data structures from runtime memory periodically against predefined constraints. If any violations have been detected, recovery functions are invoked. The prototype system is developed...
This paper introduces a new dependable operating system project, called DEOS, started in 2006, and scheduled to continue for six years. In this project, a safety extension mechanism called P-Bus is to be designed, and implemented in the Linux kernel so that a future dependability attribute is implemented with P-Bus. A hardware abstraction layer, called SPUMONE, is introduced so that a light-weight...
Recently, the engineering cost of embedded systems is rapidly increasing due to growing sophistication of services. To deal with the problem, hybrid operating system environments have been proposed. This enables to run a RTOS and a general purpose OS concurrently and to reuse software resources on both of them. This approach is efficient in reducing engineering costs. We reconfigured the requirement...
The emergence of functional embedded systems such as cell-phones and digital appliances brought up a new issue, building a system supporting both real-time and rich services. One of the solutions is leveraging a hypervisor to integrate an RTOS and a commodity OS into a single device. However, this approach induces the limitation of application deployment; all the high priority tasks should reside...
The specific accumulation of vanadium by certain ascidians, known as sea squirts or tunicates, has been of long-standing interest. Since vanadium is in the +5 oxidation state in sea water but in the +3 state in ascidian blood cells, some reducing agent must participate in the accumulation process. Tunichromes, a class of hydroxy-dopa containing tripeptides, have been significantly studied as a candidate...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.