Abstract: The present invention relates to an operating system performance interference preventing apparatus of a hypervisor system.

Abstract: A virtual environment system and a method of operating the same are provided. The virtual environment system includes a virtual operating system (OS) unit to operate a virtual OS installed in a mobile storage medium in a host OS installed in a host computer, to attach a virtual resource included in the virtual OS to the host OS, and to perform arbitration so that a virtual process operated in the virtual OS uses the virtual resource. The system includes a user interface unit to provide a virtual desktop screen to allow a user to use the virtual process in the virtual environment provided by the virtual OS.

Abstract: An apparatus and method for providing an integrated user interface for a variety of operating systems are provided. When a user request execution of an application included in a second operating system an application of a first operating system is in the foreground of a display, the apparatus switches the application included in the second operating system to the foreground of the display without the need for a separate window. One of a server operating system and client operating systems may be set as a main domain that provides an integrated graphic user interface with respect to applications executed on a plurality of operating systems. The operating systems not set to the main domain may be set as sub-domains each of which provides application information to the main domain in response to a request from the main domain.

Abstract: A virtualization apparatus is provided. The virtualization apparatus includes a plurality of virtual machines (VMs), a process scheduler configured to schedule processes to be executed on the respective virtual machines, a virtual machine monitor (VMM) configured to provide each of the virtual machine with a virtualized execution environment, a virtual machine scheduler configured to schedule the virtual machines to run in the virtual machine monitor, and a synchronization unit configured to synchronize a process schedule time which is scheduled by the process scheduler and a virtual machine schedule time which is scheduled by the virtual machine scheduler, or to change the virtual machine schedule time in consideration of the process schedule time.

Abstract: A method of intrusion detection in a terminal device that supports driving of a plurality of operating systems, is provided. The method includes collecting at a first operating system of the plurality of operating systems intrusion detection data for analyzing whether there is an intrusion in at least a second operating system of the plurality of operating systems; and performing at the first operating system an intrusion detection with respect to the at least a second operating system using the collected intrusion detection data.

Abstract: An apparatus and method for managing process migration are provided. When a process of a source virtual machine is to be migrated to a target virtual machine based on a process migration request, and the source virtual machine and the target virtual machine are on the same operating system (OS), logical migration is performed by updating information included in a virtual machine information database and a namespace router table.

Abstract: Provided are an apparatus and method for providing services using a virtual operating system (OS). The apparatus classifies virtual resources into a plurality of mutually exclusive regions and manages the virtual resources based on the provides services regions. The plurality of provides services regions include a virtual region whose resources are stored in and used on an external storage, and an overlay region whose resources refer to host resources. The apparatus uses the region information for virtual resources and a list of resources accessed for each application process to manage the virtual resources.

Abstract: Provided are an apparatus and method for processing an interrupt. The apparatus includes a plurality of processing cores that are each configured to process an interrupt. The apparatus also includes an interrupt distributing unit configured to receive the interrupt, determine whether or not execution mode of each processing core is IRQ mode for exception processing or interrupt processing, and provide the received interrupt to a processing core that is not in IRQ mode.

Abstract: A virtual machine monitor and a scheduling method thereof is provided. The virtual machine monitor may operate at least two domains. The virtual machine monitor may include at least one run queue and a plurality of schedulers, at least two of the plurality of schedulers comprising different scheduling characteristics. The virtual machine monitor may insert a task received from the domain into the run queue and may select a scheduler for scheduling the task, which may be inserted into the run queue, from the schedulers, according to an event type.

Abstract: An apparatus is provided for supporting a plurality of operating systems by single hardware, wherein the plurality of operating systems include a server operating system to provide an integrated user interfaces for applications running on the plurality of operating systems, and at least one client operating system to provide a user interface for applications running on the client operating system through the server operating system under the control of the server operating system.

Abstract: Provided is a memory management method, and an apparatus to perform the method, which achieves a shortened user waiting time in consideration of system performance. The method includes acquiring a deallocation unit used to deallocate an allocated memory area according to at least one attribute, and deallocating the allocated memory area using the deallocation unit.

Abstract: A method and apparatus for improving application processing speed in a digital device which improve application processing speed for a digital device running in an embedded environment where processor performance may not be sufficiently powerful by detecting an execution request for an application, identifying a group to which the requested application belongs, among preset groups with different priorities and scheduling the requested application according to the priority assigned to the identified group, and executing the requested application based on the scheduling result.

Abstract: A method and apparatus for authorizing a host to access a portable storage device and a method and apparatus of providing information for authorizing a host to access a portable storage device. The method includes: verifying integrity of host software requesting to transmit data; determining whether the host is authorized to access the portable storage device; and determining whether the host software is authorized to access the portable storage device. Accordingly, user information may be stored on the portable storage device and moved with security.

Abstract: A method and apparatus for inputting and outputting data by using a virtualization technique are provided. The method includes generating a virtual operating system (OS) for the external device, which is connected to a host, based on OS information stored in the external device, setting a partial area of a storage of the host as virtual storage for the external device, and storing the data in the virtual storage or a memory of the external device in response to a request for inputting and outputting the data from the virtual OS.

Abstract: A virtualization apparatus is provided. The virtualization apparatus includes a plurality of virtual machines configured to have priority levels, a memory pool configured to be shared between the plurality of virtual machines and store part of data stored in a system memory of each of the plurality of virtual machines, and a memory pool manager configured to process a memory allocation request or a data storage request regarding the memory pool in consideration of the priority levels of the plurality of virtual machines, a guaranteed memory size for each of the plurality of virtual machines, and a size of memory that can be allocated to each of the plurality of virtual machines.

Abstract: A virtualization apparatus and a method for controlling the same. In a method for controlling a virtualization apparatus including a plurality of domains, a sub domain transmits an input/output (IO) request for a hardware device to a main domain, and the main domain controls whether or not the IO request accesses the hardware device according to a resource needed to perform the IO request.

Abstract: An apparatus and method of providing security information in a virtual environment that supports a plurality of operating systems. The plurality of operating systems include at least one secure operating system in which applications whose safety has been verified are installed, and at least one normal operating system in which applications whose safety has been not verified are freely installed. The server operating system may provide security information corresponding to an operating system in which an application executed as foreground is installed, to provide information indicating whether an application is operated in a secure operating system, to a user.

Abstract: An apparatus and method for controlling a resource utilization policy in a virtual environment are provided. The apparatus may increase network throughput by dynamically adjusting the resource utilization policies of a driver domain that can directly access a shared device, and a guest driver that cannot directly access the shared device. In addition, the apparatus may improve the efficiency of the use of CPU resources by appropriately adjusting the CPU occupancy rates of the driver and guest domains.

Abstract: Provided are an apparatus and method for adapting an input/output interface. According to the exemplary method, a host system adapts an input/output interface of the guestsystem a to an input/output unit capability of a host system so as to support a service supported by an input/output unit supporting the input/output unit capability of the guest system using the at least one input/output unit of the host system.

Abstract: A method and apparatus for inputting and outputting data by using a virtualization technique are provided. The method includes generating a virtual operating system (OS) for the external device, which is connected to a host, based on OS information stored in the external device, setting a partial area of a storage of the host as virtual storage for the external device, and storing the data in the virtual storage or a memory of the external device in response to a request for inputting and outputting the data from the virtual OS.