Patent application number | Description | Published |
20130170209 | OPTICAL SEMICONDUCTOR LIGHTING APPARATUS - An optical semiconductor lighting apparatus having at least one or more clamping units are formed along a longitudinal direction of a race way. A first sealing unit finishes both ends of a housing attached to or detached from the clamping unit. A second sealing unit surrounds upper and lower portions of both edges of an optical member disposed on the bottom surface of the housing. A wireless communication unit receives a dimming signal through a wireless communication network, and outputs the received dimming signal to a power supply unit. The power supply unit supplies a DC voltage to the light emitting module to control the illuminance of the light emitting module according to the dimming signal input from the wireless communication unit. | 07-04-2013 |
20130200796 | HEAT SINK AND LED ILLUMINATING APPARATUS COMPRISING THE SAME - A light emitting diode (LED) illuminating apparatus including a heat sink, a light emitting module, a power connection portion, a translucent cover and a wiring path. The heat sink has a plurality of heat dissipation fins. The light emitting module is positioned on an upper portion of the heat sink. The power connection portion is positioned below a lower portion of the heat sink. The translucent cover is mounted to cover an upper portion of the light emitting module. The wiring path is formed in the heat sink so as to accommodate a wire for electrically connecting the power connection portion and the light emitting module. In the LED illuminating apparatus, the light emitting module emits light by directly receiving AC power supplied through the wire accommodated in the wiring path. | 08-08-2013 |
20140175996 | LED LIGHTING APPARATUS WITH IMPROVED TOTAL HARMONIC DISTORTION IN SOURCE CURRENT - The LED lighting apparatus includes: a rectification block; an LED block including a first light emitting group and a second light emitting group; a charging/discharging block configured to charge electric charges in a charging period, and discharge electric charges in a discharging period; a driving control unit configured to determine a voltage level of a rectified voltage, controls a path selection switch to connect the rectification block to the LED block and controls the charging/discharging block to charge electric charges in the charging period, and controls the path selection switch to connect the rectification block to a ground and controls the charging/discharging block to discharge electric charges from the charging/discharging block to the LED block in the discharging period; and a path selection switch configured to connect the rectification block to the LED block in the charging period, and connect the rectification block to the ground in the discharging period. | 06-26-2014 |
20140191673 | LED DRIVING CIRCUIT HAVING Vcc STABILIZATION CIRCUIT - An LED driving circuit includes: a bridge rectification circuit configured to receive an AC voltage and perform full-wave rectification on the AC voltage, the bridge rectification circuit including a first LED block, a second LED block, a third LED block, and a fourth LED block each including n LEDs (where n is a positive integer equal to or greater than one); a constant current IC configured to constantly limit a current flowing through the bridge rectification circuit; and a Vcc stabilization circuit connected between the constant current IC and a driving voltage supply node positioned between LEDs constituting one of the first to fourth LED blocks, and configured to stabilize a voltage applied through the bridge rectification circuit and provide the constant current IC with a stabilized driving voltage. | 07-10-2014 |
20140197749 | AC LED LIGHTING APPARATUS USING VOLTAGE EDGE DETECTOR - An AC LED lighting apparatus using a voltage edge detector is provided. The AC LED lighting apparatus includes: a rectification unit configured to rectify an AC voltage to output a DC rectified voltage; an LED unit including a first light emitting group and a second light emitting group each including at least one LED; and an LED driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage. The LED driving control unit sets the reference voltage by detecting a slope of the rectified voltage and simultaneously detecting the voltage level of the rectified voltage and the detected slope of the rectified voltage. | 07-17-2014 |
20140203718 | AC LED LIGHTING APPARATUS USING VOLTAGE EDGE DETECTOR - Exemplary embodiments of the present invention disclose an alternating current (AC) light emitting diode (LED) lighting apparatus including a rectification unit configured to receive an AC voltage and output a DC rectified voltage, an LED unit connected to the rectification unit, the LED unit comprising at least two light emitting groups, each light emitting group comprising at least one LED, and an LED driving control unit connected to the rectification unit, the LED driving control unit configured to establish a series or parallel connection between the light emitting groups, by comparing a voltage level of the rectified voltage with a reference voltage. The LED driving control unit is configured to calculate a reference voltage adjustment value in order to compensate for a signal processing delay of the LED driving control unit. | 07-24-2014 |
20140203722 | AC LED LIGHTING APPARATUS USING VOLTAGE EDGE DETECTOR - An AC LED lighting apparatus using a voltage edge detector is provided. The AC LED lighting apparatus includes: a rectification unit configured to rectify an AC voltage to output a DC rectified voltage; an LED unit including a first light emitting group and a second light emitting group each including at least one LED; and an LED driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage. The LED driving control unit sets the reference voltage by detecting a slope of the rectified voltage and simultaneously detecting the voltage level of the rectified voltage and the detected slope of the rectified voltage. | 07-24-2014 |
20140247598 | HEAT SINK AND LED ILLUMINATING APPARATUS COMPRISING THE SAME - A light emitting diode (LED) illuminating apparatus including a heat sink, a light emitting module, a power connection portion, a translucent cover and a wiring path. The heat sink has a plurality of heat dissipation fins. The light emitting module is positioned on an upper portion of the heat sink. The power connection portion is positioned below a lower portion of the heat sink. The translucent cover is mounted to cover an upper portion of the light emitting module. The wiring path is formed in the heat sink so as to accommodate a wire for electrically connecting the power connection portion and the light emitting module. In the LED illuminating apparatus, the light emitting module emits light by directly receiving AC power supplied through the wire accommodated in the wiring path. | 09-04-2014 |
20140306242 | OPTICAL SEMICONDUCTOR LIGHTING APPARATUS - An optical semiconductor lighting apparatus including: a substrate in which a single LED chip or a plurality of LED chips are disposed; a first mold portion disposed on the substrate to cover the plurality of LED chips; and a second mold portion extending from an edge of the first mold portion and disposed on the substrate. The respective LED chips can improve adhesive strength with respect to the substrate through the first and second mold portions. Peeling, surface cracking and damage caused by moisture permeation can be prevented by the first and second mold portions. A fluorescent material included in the second mold portion can improve a wavelength conversion rate. | 10-16-2014 |
20140312771 | RECTANGULAR LED LIGHTING APPARATUS - A rectangular LED lighting apparatus connected directly to an AC power supply is provided. The rectangular LED lighting apparatus includes: a printed circuit board in which circuit patterns are formed for electrical connection of LEDs; a rectification unit configured to rectify an AC voltage and output a DC rectified voltage; an LED unit driven by the rectified voltage, the LED unit including first to n-th light emitting blocks (where n is a positive integer equal to or greater than 2) arranged linearly on the printed circuit board; and an LED driving control unit configured to sequentially drive first to m-th light emitting groups (where m is a positive integer equal to or greater than 2), each of which includes n LEDs, according to a voltage level of the rectified voltage output from the rectification unit. | 10-23-2014 |
20150108517 | LIGHT EMITTING MODULE AND LIGHTING APPARATUS HAVING THE SAME - A light emitting module according to an exemplary embodiment of the present invention includes a printed circuit board (PCB) and first through m-th lighting blocks (‘m’ is an integer greater than one). The PCB has wiring patterns electrically connecting optical semiconductor devices. The first through the m-th lighting blocks are disposed on the PCB and configured to generate light. Each of the first through the m-th lighting blocks includes first through n-th lighting groups (each block includes at least one group), each of which includes optical semiconductor devices disposed on the PCB, and an electric currents configured to flow through each lighting group is substantially the same. | 04-23-2015 |
Patent application number | Description | Published |
20080291912 | SYSTEM AND METHOD FOR DETECTING FILE - The present invention relates to a file detecting system and a method thereof. The file detecting system uses a signature of a file header and collects a network packet including a file to be detected among packets transmitted/received through a network. Subsequently, after the network protocol header is eliminated from the collected network packet, the file is reassembled and recovered. The recovered file is verified, and the verified file is transmitted to various file analysis systems. | 11-27-2008 |
20090133125 | METHOD AND APPARATUS FOR MALWARE DETECTION - The present invention relates to an apparatus and method for detecting malware. The malware detection apparatus and method of the present invention determines whether a file is malware or not by analyzing the header of an executable file. Since the malware detection apparatus and method can quickly detect presence of malware, it can shorten detection time considerably. The malware detection apparatus and method can also detect even unknown malware as well as known malware to thereby estimate and determine presence of malware. Therefore, it is possible to cope with malware in advance, protect a system with a program, and increase security level remarkably. | 05-21-2009 |
20090158048 | METHOD, CLIENT AND SYSTEM FOR REVERSED ACCESS TO MANAGEMENT SERVER USING ONE-TIME PASSWORD - Provided are a method, client and system for reservation access to a management server using a one-time password. A generated personal identification number (PIN) is transmitted to the management server when a reservation time comes. The management server generates a random number encrypted using the PIN and transmits the random number to the client. The random number encrypted using the PIN is received, the received random number is encrypted by a symmetric-key algorithm using a client secret key and is transmitted to the management server. The management server receives the random number encrypted using the client secret key, and decrypts the received random number using a server secret key and the PIN. A random number before the encryption using the PIN is compared with a decrypted random number, and access of the client is accepted if the two numbers are identical. Automatic access to a system employing a one-time password authentication method can be made through an arbitrary route according to previously reserved settings to perform information collection and to process specific functions in the case where a system manager is unable to directly access the system through a determined route because of temporal and spatial limitations. | 06-18-2009 |
20090158431 | METHOD OF DETECTING POLYMORPHIC SHELL CODE - There is provided a method of detecting a polymorphic shell code. The decoding routine of the polymorphic shell code is detected from received data. In order for the decoding routine to access the address of an encoded code, the address of a currently executed code is stored in a stack, the value is moved in a register table, and it is determined whether the value is actually used for operating a memory. Emulation is finally performed and the degree of correctness of detection is improved. Therefore, time spent on detecting the polymorphic shell code and an overhead are reduced and the correctness of detection is increased. | 06-18-2009 |
20100156176 | DC POWER SUPPLY DEVICE AND METHOD FOR SUPPLYING MULTIPLE VARIABLE VOLTAGES USING POWER LINE COMMUNICATION - Provided are a DC power supply device and a DC power supply system for supplying multiple DC powers having variable voltages using a power line communication (PLC). The DC power supply device includes an AC/DC converter, a DC/DC distributor, a plurality of output voltage regulators, a voltage control module, and a PLC modem. The AC/DC converter converts an inputted AC voltage into DC voltage, and the DC/DC distributor distributes the DC voltage according to number of external devices. The output voltage regulators output the distributed DC voltage to the external devices. The voltage control module controls the output voltage regulators to output voltages according to the voltage request information of the external devices. The PLC modem transmits/receives the real-time voltage request information of the external devices through a power line. | 06-24-2010 |
20110119514 | POWER CONTROL APPARATUS AND METHOD FOR CLUSTER SYSTEM - A power control apparatus for a cluster system, includes a cluster including a plurality of nodes, each equipped with a battery; and a power control unit connected to the cluster over a network and configured to monitor power management information and performance information of the cluster and to set a power capping threshold based on the monitored power management information and performance information of the cluster. Accordingly, the power control unit enables power of the cluster to be limited by turning on and off the batteries when power of the cluster system increases up to the power capping threshold. | 05-19-2011 |
20110138195 | POWER MANAGEMENT APPARATUS AND METHOD THEREOF AND POWER CONTROL SYSTEM - A power management apparatus includes: a service request monitor block for receiving service requests by service groups to provide load information of service platforms belonging to the respective service groups; a platform information collection block for collecting a configuration information of the service platforms and collecting load information of the service platforms in a predetermined cycle; a platform power state alteration block for altering power states of the service platforms by request; and a management interface block for providing a setup interface for a load-based and a time-based power control and providing platform profile information generated based on the load information. | 06-09-2011 |
20120166585 | APPARATUS AND METHOD FOR ACCELERATING VIRTUAL DESKTOP - Disclosed herein is an apparatus for accelerating a virtual desktop, including: a plurality of media processors, processing media data; a processor, extracting data attribute information from virtual desktop acceleration commands for a client apparatus received from a host apparatus and transmitting the virtual desktop acceleration commands to any one of the plurality of media processors according to the attribute information; a transmission unit, transmitting processed results for the virtual desktop acceleration commands, processed through the plurality of media processors, to the client apparatus; and a transmission command pool, transmitting a complete signal, indicating that the processed results have been transmitted to the client apparatus, to the host apparatus. | 06-28-2012 |
20120167222 | METHOD AND APPARATUS FOR DIAGNOSING MALICOUS FILE, AND METHOD AND APPARATUS FOR MONITORING MALICOUS FILE - An apparatus for diagnosing malicious files includes a information transferring unit configured to receive information regarding a malicious file distributed in a management network and an execution file generated by assembling packets collected from the management network; an anti-virus engine configured to determine whether or not the execution file is malicious to generate information regarding a new malicious file; and a management unit configured to transfer the information regarding the malicious file and the information regarding the new malicious file to a terminal device on the management network through the information transferring unit. | 06-28-2012 |
20120297382 | VIRTUAL SERVER AND VIRTUAL MACHINE MANAGEMENT METHOD FOR SUPPORTING ZERO CLIENT - Disclosed herein are a virtual server and a virtual machine management method for supporting a zero client. The virtual server includes a virtual machine management agent unit and a virtualization unit. The virtual machine management agent unit generates a virtual host interface resource pool and a directly allocatable host interface resource pool by classifying attributes of host interface resources of the virtual server. The virtualization unit provides a host interface of a virtual machine by selectively using any one of emulation mode in which a virtual host interface set corresponding to the virtual host interface resource pool is generated and direct connection mode in which a directly allocatable host interface set corresponding to the directly allocatable host interface resource pool is connected to the zero client. | 11-22-2012 |
20120324573 | METHOD FOR DETERMINING WHETHER OR NOT SPECIFIC NETWORK SESSION IS UNDER DENIAL-OF-SERVICE ATTACK AND METHOD FOR THE SAME - Provided is an apparatus and method for determining whether or not a specific network session is under a denial-of-service (DoS) attack. The method includes detecting a packet transmitted in the session, initializing the number of attack-suspicion continuation packets, increasing the number of attack-suspicion continuation packets by a predetermined number, and determining that the session is under the DoS attack. | 12-20-2012 |
20130007737 | METHOD AND ARCHITECTURE FOR VIRTUAL DESKTOP SERVICE - The present invention relates to a method and an architecture capable of efficiently providing a virtual desktop service. The service architecture for the virtual desktop service includes a connection broker for performing the management of virtual machines, a server monitoring function, and a protocol coordination function. A resource pool is configured to manage software resources that are transferred to a specific virtual machine in a streaming form at a predetermined time and that are executed on the specific virtual machine and to provide provision information about the managed software resources at the request of the connection broker, in order to provide an on-demand virtual desktop service. A virtual machine infrastructure is configured to support hardware resources, generate virtual machines in which the software of the user terminal is operated, and provide the virtual machines as virtual desktops. | 01-03-2013 |
20130055349 | METHOD AND APPARATUS FOR RELEASING TCP CONNECTIONS IN DEFENSE AGAINST DISTRIBUTED DENIAL OF SERVICE ATTACKS - Disclosed are an apparatus and method for releasing a TCP connection against a denial-of-service attack. The TCP connection releasing method, which is a method for releasing a connection of a communication session between a server and a remote host, includes obtaining information included in a last ACK packet transmitted from the server to the remote host from a session table in which information on the communication session is recorded, generating an RST packet for requesting release of the communication session connection using the information on the obtained last ACK packet, and transmitting the generated RST packet to the server. | 02-28-2013 |
20130282907 | NETWORK SEPARATION APPARATUS AND METHOD - Disclosed herein is a network separation apparatus and method. The network separation apparatus according to the present invention includes a main processing unit for allocating resources according to a network to be accessed. An in-house processing unit accesses an in-house network using the resources allocated by the main processing unit. An external processing unit accesses an external network using resources, physically separated from resources used by the in-house processing unit, among the resources by the main processing unit. | 10-24-2013 |
20140033318 | APPARATUS AND METHOD FOR MANAGING USIM DATA USING MOBILE TRUSTED MODULE - An apparatus manages universal subscriber identity module (USIM) data in a terminal using a mobile trusted module (MTM). The apparatus includes a mobile information storage unit configured to store at least one key and the USIM data in a protection region, an information security unit configured to protect information stored in a USIM and the terminal using at least one of the USIM data and the key stored in the mobile information storage unit, and a USIM data manager configured to restore at least one of the USIM data and the key stored in the mobile information storage unit to the USIM, and store at least one of USIM data and the key provided from the USIM in the mobile information storage unit. | 01-30-2014 |
20140067917 | DAAS MANAGER AND DAAS CLIENT FOR DAAS SYSTEM - Disclosed herein are a Desktop As A Service (DaaS) manager and DaaS client for a DaaS system. The DaaS manager includes a connection broker module, a provisioning module, a management module, and a web server module. The connection broker module permits connections to a DaaS client and a DaaS server to a user who has performed user authentication. The provisioning module determines the operating status of the DaaS server, and assigns a virtual machine of an optimum DaaS server to the DaaS client. The management module monitors the operating status of the DaaS server and the virtual machine, and executes a control command of the DaaS server. The web server module provides a web-based management tool Graphic User Interface (GUI) to the user. | 03-06-2014 |
20140075537 | METHOD AND APPARATUS FOR CONTROLLING BLOCKING OF SERVICE ATTACK BY USING ACCESS CONTROL LIST - An attack blocking control method uses an access control list (ACL). The method includes investigating the ACL if a packet is input, and checking whether or not the packet is registered in the ACL, comparing a current time count value with a blocking time of the packet if the packet is determined to be registered in the ACL. Further, the method includes increasing the number of blocking times of the packet by 1 if the current time count value is smaller than or equal to the blocking time. Further, the method includes automatically renewing the blocking time, and removing registration information for the packet from the ACL if the current time count value is greater than the blocking time. | 03-13-2014 |
20140115400 | DEVICE AND METHOD FOR FAULT MANAGEMENT OF SMART DEVICE - There is provided a method of fault management of a smart device including comparing a value of a fault detection indicator (hereinafter referred to as ‘FDI’) in a normal state, which detects faults generated in the smart device, with respect to at least one performance indicator, with an FDI value observed in real time and detecting the faults by calculating a relative variation level of the observed values, and creating a diagnosis object (hereinafter referred to as ‘DO’) including a cause and a countermeasure of the detected fault and analyzing the fault. | 04-24-2014 |
20140214922 | METHOD OF PROVIDING VIRTUAL MACHINE AND SERVICE GATEWAY FOR REAL-TIME VIRTUAL DESKTOP SERVICE - Disclosed herein is a method of providing a virtual machine and service gateway for real-time virtual desktop service. The service gateway includes a user information management unit, a virtual machine information management unit, and a virtual machine generation unit. The user information management unit authenticates user information. The virtual machine information management unit generates access information about a virtual machine corresponding to the user information, and provides the generated access information to a client unit. The virtual machine generation unit selects a service provider server in response to a request from a client unit, and generates a virtual machine in the selected service provider server. | 07-31-2014 |
20140366093 | APPARATUS AND METHOD FOR VIRTUAL DESKTOP SERVICE - Disclosed herein are a method and architecture capable of efficiently providing virtual desktop service. A service architecture for virtual desktop service according to the present invention includes a connection broker configured to perform authentication, manage virtual machines, and perform a server monitoring and protocol coordination function, a resource pool configured to manage software resources that are delivered to a specific virtual machine in a streaming form on a specific time in order to provide on-demand virtual desktop service and are executed on the specific virtual machine and to provide provision information about the managed software resources in response to a request from the connection broker, and a virtual machine infrastructure configured to support hardware resources, generate virtual machines in which the software of a user terminal is executed, and provide the generated virtual machine as virtual desktops. | 12-11-2014 |
20140380089 | METHOD AND APPARATUS FOR RECOVERING FAILED DISK IN VIRTUAL MACHINE - A method and apparatus for recovering the failed disk of a virtual machine in a virtualization system are disclosed. The apparatus includes a system performance analysis unit, a failed disk recovery unit, and a disk exchange unit. The system performance analysis unit calculates recovery resources, that is, network and disk I/O bandwidths, to be assigned to the recovery of a failed disk by analyzing the performance of the virtualization system. The failed disk recovery unit performs the discovery of the failed disk by recovering a copy disk, that is, a copy of the failed disk, using a mandatory disk stored in the virtualization system while ensuring the performance of virtual machines based on the recovery resources. The disk exchange unit deletes the failed disk and assigns the recovered copy disk to a virtual machine corresponding to the failed disk. | 12-25-2014 |
20150026306 | METHOD AND APPARATUS FOR PROVIDING VIRTUAL DESKTOP SERVICE - A method and an apparatus for providing a virtual desktop service to provide an optimal virtual desktop service in accordance with distances between virtualization servers and a user are provided. A virtual desktop service suitable for a request of the user is provided to the user so that loads of servers may be dispersed and power usage of the servers may be minimized. That is, in an environment where the virtualization servers that provide the virtual desktop service are locally dispersed, the virtual machines may be allocated to a virtualization server with a shortest network delay based on network distances from the virtualization servers to the user. In addition, after a server power usage amount is predicted in accordance with a virtual machine usage type of the user, a virtualization server may be selected in accordance with the prediction result. | 01-22-2015 |
20150074414 | SYSTEM AND METHOD FOR PROVIDING DIGITAL SIGNATURE BASED ON MOBILE TRUSTED MODULE - Provided are a system and method for providing a digital signature based on a mobile trusted module (MTM). The system includes a control unit configured to activate a mobile application and receive selection of one certificate in a previously set certificate list from a user through the activated mobile application, an MTM configured to generate based on the selected certificate a keypad image in which buttons are irregularly arranged, an MTM table for converting keypad touch information into an actual value, and a terminal table for converting keypad image coordinates into an area, and put a digital signature on the certificate using a certificate password input by the user based on the keypad image, the MTM table, and the terminal table to generate a digital signature value, and a communication unit configured to encrypt the generated digital signature value and transmit the encrypted digital signature to an authentication server. | 03-12-2015 |
20150113272 | METHOD AND APPARATUS FOR AUTHENTICATING AND MANAGING APPLICATION USING TRUSTED PLATFORM MODULE - Disclosed herein are authentication and management of an application using a mobile trusted module (MTM). | 04-23-2015 |
20150113528 | VIRTUAL DESKTOP SERVICE APPARATUS AND METHOD - Disclosed is a virtual desktop service method. The virtual desktop service method includes configuring and measuring users and resources according to predetermined criteria, copying operating system files and data files to be provided to the users before use request, receiving request to use a virtual machine from any one of the users and performing user authentication and work approval, and providing an operating system file and a data file of the any one of the users, among the copied operating system files and data files, to the any one of the users according to the use request to transmit a virtual desktop environment. Consequently, the virtual desktop service method performs a service to provide a virtual machine to a user in real time. | 04-23-2015 |
20150201004 | METHOD AND SYSTEM FOR PROVIDING SERVER VIRTUAL MACHINE FOR REAL-TIME VIRTUAL DESKTOP SERVICE, AND SERVER DEVICE SUPPORTING THE SAME - Provided is a virtual desktop service, and disclosed is a system for providing a server virtual machine, including: a client configured to receive allocation of a virtual machine for using a virtual desktop service; a connection broker configured to control a type of virtual machine to be allocated to be classified according to user terminal registration information of the client, any one operation server to be selected among a plurality of operation servers, and the virtual machine to be allocated; the plurality of operation servers configured to provide the client with a virtual machine under a control of the connection broker; and a shared storage configured to store data related to the client for providing the virtual machine, and provide the stored data to the operation servers, a method of providing a server virtual machine, and a server device supporting the same. | 07-16-2015 |
20150242220 | MASSIVE VIRTUAL DESKTOP PROVIDING METHOD AND SYSTEM THEREOF - Exemplary embodiments of the present invention relate to a method and system for providing massive virtual desktops. A system for providing massive virtual desktops according to an embodiment of the present invention comprises a uppermost layer configured to receive a virtual desktop providing request from a client, search an adjacent lower layer involved in a virtual desktop service for the client, and transmit the virtual desktop providing request to the searched adjacent lower layer; and a lowest layer configured to receive the virtual desktop providing request transmitted from an adjacent upper layer, search a virtual desktop to perform a service by analyzing the virtual desktop providing request, and transmit the searched virtual desktop to the client. According to embodiments of the present invention, a virtual desktop can be provided to massive users. | 08-27-2015 |
20150269187 | APPARATUS AND METHOD FOR PROVIDING VIRTUAL MACHINE IMAGE FILE - Provided is a method of providing a virtual machine image file in a cloud computing-based virtual desktop infrastructure. This method includes moving a golden image, an initial image provided from a shared storage, to a virtual machine driving server, converting the golden image into an image of a copy-on-write file format, and storing the same in a cache; allocating the converted virtual machine image to a virtual machine, and storing images of each virtual machine in the shared storage and managing the same to recover a virtual desktop when a disaster occurs. The method includes generating only data changed by the virtual machine, as a virtual machine image file, and managing the same, and hierarchically configuring a virtual machine image file based on a base image and storing the same in a cache memory in order to increase a loading rate of the virtual machine image file including the base image-based virtual machine image file. | 09-24-2015 |
20150339145 | VIRTUAL MACHINE SERVICE SYSTEM AND VIRTUAL MACHINE SERVICE PROVIDING METHOD THEREOF - Disclosed is a virtual machine service system, including: one or more virtual machines connected to a network through connection with virtual network interfaces provided from a first network card or connection with a second network card; a management module monitoring network usage of one or more virtual machines and reallocating the virtual network interfaces to one or more virtual machines according to a monitoring result; and an agent module providing to the management module network connection information of one or more virtual machines. | 11-26-2015 |