Patents Assigned to Electronics and Telecommunications
  • Patent number: 8090529
    Abstract: In existing moving object tracking, there is a great communication load between a terminal and a platform, because the terminal should report its location to the platform every second or every minute and the platform should frequently process the location form the terminal. It is possible to reduce the great communication load on the server, by calculating an error between the current GPS location and the estimated location at a specific time on the basis of the estimated arrival time of the moving object. It allows that the terminal report its location to the server only when the error between current GPS location and the estimated location is greater than a predetermined threshold value.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung-Hee Jo, Kyoung-Wook Min, Ju-Wan Kim, Jong-Hyun Park
  • Patent number: 8089914
    Abstract: To allocate a bandwidth to a terminal, a base station in a communication system including a relay receives a bandwidth request code from the relay, and determines whether a bandwidth request code that is the same as the received bandwidth request code has been received from the terminal. In addition, when the same bandwidth request code has been received from the terminal, the base station allocates the bandwidth to at least one among the relay and the terminal.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ju-Hee Kim, Shang-Lim Shin, Kyung-Soo Kim
  • Patent number: 8087151
    Abstract: A gas sensor includes zinc oxide nano-structures formed on a substrate, a plurality of metal islands coated on a surface of each zinc oxide nano-structure and separated from one another, a first electrode electrically connected to one end of each zinc oxide nano-structure through the substrate, a second electrode electrically connected to the other end of each zinc oxide nano-structure, and a current variation-measuring unit electrically connected to each of the first electrode and the second electrode so as to measure a variation in the amount of current flowing between the first electrode and the second electrode. In order to form the plurality of metal islands on the zinc oxide nano-structures, a solution of metal components of a metal material is coated on the surface of each zinc oxide nano-structure.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Rae-Man Park, Sang-Hyeob Kim, Jonghyurk Park, Sunglyul Maeng
  • Patent number: 8089862
    Abstract: The present invention relates to a resource reallocation and bandwidth request method in a wireless access system. The present invention uses the synchronous HARQ mode together with the asynchronous HARQ mode according to scheduling by the HARQ retransmission burst. Therefore, a resource allocation overhead for a retransmission burst is reduced during the synchronous HARQ mode operation. Also, an uplink transmission delay is reduced, and efficiency of the radio resource is maximized.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: January 3, 2012
    Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.
    Inventors: Sung Kyung Kim, Chul Sik Yoon
  • Patent number: 8089937
    Abstract: A method and mobile communication terminal for handover in a mobile communication network including at least one mobile communication base station and a communication satellite.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Chul Hong, Kun Seok Kang, Do Seob Ahn, Ho Jin Lee
  • Patent number: 8089931
    Abstract: Provided is a fast handover method using candidate care-of addresses (CoAs). The method includes obtaining Internet protocol (IP) address information of access routers located adjacent to a previous access router (PAR) to which a mobile node is connected; setting more than one candidate CoAs based on the IP address information; and selecting from the more than one candidate CoAs a CoA of a sub-net to which the mobile node is to move and performing a handover based on the selected CoA. Therefore, a delay and a packet loss caused by the setting of a new NCoAs can be prevented.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Hoon Jee, Hong Seock Jeon, Jong Hwa Yi, Hyeong Ho Lee
  • Patent number: 8090069
    Abstract: The present invention relates to an apparatus for generating a clock signal with jitter and a test apparatus including the same. The apparatus for generating a clock signal with jitter in accordance with the present invention includes a voltage-controlled crystal oscillator (VCXO) for generating an output signal including jitter components based on a driving power source having a specific waveform and a controlled voltage, a phase comparator for calculating a phase difference of a reference signal and the output signal, and a loop filter for generating the controlled voltage based on the phase difference calculated by the phase comparator. Accordingly, the PLL circuit unit generates a clock signal including jitter, so that the complexity and manufacturing cost of the apparatus can be reduced.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunication Research Institute
    Inventors: Bong Guk Yu, Eun Tae Kim, Hyung Jung Kim, Gweon Do Jo
  • Patent number: 8091133
    Abstract: Provided are an apparatus and method for detecting a malicious process. The apparatus includes: a process monitoring unit for monitoring a process generated in a computing environment; a target process setting unit for previously setting a test target process among the processes confirmed by the process monitoring unit; a process generation time change monitoring unit for monitoring if the target process set by the target process setting unit requests to change a generation time; a generation time change preventing unit for preventing a change in the generation time of the target process when the target process requests to change the generation time; and a malicious process detecting unit for determining that a child process of the target process set by the target process setting unit is a malicious process if the child process is generated within a predetermined reference time.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yun Ju Kim, Young Tae Yun
  • Publication number: 20110320857
    Abstract: A bottom-up (or upward) multilayer network recovery method and apparatus based on a root-cause analysis are disclosed to quickly and accurately perform a recovery operation. The bottom-up multilayer network recovery method based on a root-cause analysis includes: simultaneously counting, by a fault detection layer, a root-cause analysis (RA) time and a hold-off (HO) time, upon detecting an occurrence of a fault; performing, by the fault detection layer, a root-cause analysis during the RA time to recognize a layer in which a root-cause has occurred; when the root-cause has occurred in the fault detection layer, immediately recovering the fault by the fault detection layer, and when a root-cause has occurrence in a lower layer, waiting for the HO time until such time as the lower layer can recover the fault; and when the fault has not been recovered even after the HO time has lapsed, recovering the fault by the fault detection layer.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Tae Hyun Kwon, Hyung Seok Chung, You Hyeon Jeong, Ho Young Song, Young Wook Cha, Choon Hee Kim, Jin Nyun Kim
  • Publication number: 20110319091
    Abstract: Provided is a system for allocating a radio resource. The system for allocating a radio resource may include a macro base station, a macro terminal, and a femto base station. The femto base station may allocate a radio resource for transmitting a control channel to a femto terminal, and transmit information of the allocated radio resource to the macro base station. The macro base station may allocate a radio resource for transmitting a control channel to the macro terminal in relation to the received information of the radio resource.
    Type: Application
    Filed: June 29, 2011
    Publication date: December 29, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hee Soo LEE, Jae Young Ahn
  • Publication number: 20110317754
    Abstract: Disclosed are an equalizer and an equalization method employing an adaptive algorithm for high speed data transmissions. The equalizer includes: a subtraction unit subtracting a feedback signal from an input signal to generate a subtraction signal; a timing signal generation unit generating a sampling timing signal; an equalization signal generation unit equalizing the subtraction signal according to the sampling timing signal to generate an equalization signal; and a feedback signal generation unit calculating a filter coefficient value by using the subtraction signal and the equalization signal, delaying the equalization signal, and weighting the delayed equalization signal according to the filter coefficient value to generate a feedback signal.
    Type: Application
    Filed: September 14, 2010
    Publication date: December 29, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Choong Reol Yang
  • Patent number: 8086105
    Abstract: Provided is a wavelength division multiplexer/demultiplexer having a flat wavelength response. In the wavelength division multiplexer/demultiplexer, a modified taper-shaped optical waveguide is interposed between an input waveguide and a first slab waveguide, such that the distribution of an optical signal input to an Arrayed Waveguide Grating (AWG) has a sinc-function shape. Thus, a flat wavelength response can be obtained in an output waveguide. In addition, the modified taper-shaped optical waveguide interposed to obtain a flat wavelength response has a small size and a simple structure, and thus can be applied to a conventional wavelength division multiplexer/demultiplexer without a design change.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jang Uk Shin, Sang Ho Park, Young Tak Han, Sang Pil Han, Yong Soon Baek
  • Patent number: 8086715
    Abstract: Provided is a content manager that receives content tables of adjacent apparatuses for providing digital contents to update its own content table; a content search unit that refers to the content tables of the adjacent apparatuses for providing digital contents to determine whether the contents requested by the user are providable contents and when the contents are the providable contents, grasps a storage location of the corresponding contents; and a content transceiver that when the corresponding contents are stored in the adjacent apparatuses for providing digital contents, requests the corresponding contents to the corresponding adjacent apparatuses for providing digital contents and receives the corresponding contents from the adjacent apparatuses for providing digital contents.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jinsuk Ma, Sunja Kim, Hosang Ham, Chaekyu Kim
  • Patent number: 8086102
    Abstract: Provided is a passive optical network (PON) based on a reflective semiconductor optical amplifier (RSOA). In the PON, seed-light-injection RSOAs are used in an optical line terminal (OLT) to achieve the color-less management of the wavelengths of OLT optic sources, and wavelength reuse RSOAs are used to achieve the color-less management of the wavelengths of ONTs. Therefore, problems related to ONT wavelength management can be eliminated by the wavelength reuse RSOAs, and problems related to OLT wavelength management can be eliminated by the seed-light-injection RSOAs.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byoung-Whi Kim, Mahn-Yong Park, Seung-Hyun Cho, Woo-Ram Lee
  • Patent number: 8086864
    Abstract: There are provided a low power SHA-1 hash algorithm apparatus having a low power structure and optimized to a trusted platform module (TPM) applied to a mobile trusted computing environment and a low power keyed-hash message authentication code (HMAC) encryption apparatus using the low power SHA-1 hash algorithm apparatus, the HMAC encryption apparatus including: a key padder padding key data for HMAC algorithm; an XOR operator XOR operating the padded key data and a padding constant; a data connector connecting a text to be encrypted, to data obtained by the XOR operating; a data padder padding the connected data; an SHA-1 hash algorithm part performing an SHA-1 hash algorithm on the padded data; a data selector selecting and applying one of a result of the SHA-1 hash algorithm and the text to be encrypted, to the data connector; and a controller controlling operations of the key padder, data connector, and data padder, a sequence of performing a hash algorithm of the SHA-1 hash algorithm part, and storing a
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Moo Seop Kim, Young Sae Kim, Young Soo Park, Ji Man Park, Sung Ik Jun, Jong Soo Jang
  • Patent number: 8086433
    Abstract: A simulation apparatus and method in relation to a sensor network are provided. The apparatus includes: a space database storing space information; a database storing standard specifications of sensors or sensor nodes; and a modeling unit extracting information on a 3-dimensional (3D) virtual space in which a sensor or sensor node is positioned, from the space database, obtaining the characteristic of the sensor or the sensor node from the standard specification based on the extracted space information and the standard specification of the sensor or the sensor node, and modeling the sensor or the sensor node. According to the apparatus and method, a virtual wireless sensor network system identical to a real world environment can be established, and as a result, the performance of the system can be accurately measured and an optimized design of the system can be efficiently performed.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chung Ho Lee, Kyung Ok Kim, Sung Woong Shin, Hak Cheol Kim
  • Patent number: 8085270
    Abstract: An apparatus for processing an effect using style lines, includes a contour line creation unit for creating contour lines using polygons of a three-dimensional (3D) object and location information of a camera; a style line creation unit for putting edge lists, extracted at the time of creating the contour lines, into groups, and creating one or more style lines for each of the groups; and an effect processing unit for representing a line style by inserting the created style lines inside and outside a contour line corresponding to the group. Therefore, representation to appear to have been drawn by a human hand is enabled by adding style lines to existing contour lines in order to represent a line style that belongs to various styles of non-photo realistic rendering.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Bo Youn Kim, Bon Ki Koo, Ji Hyung Lee, Hee Jeong Kim, Il Kyu Park, Yoon-Seok Choi, Seung Wook Lee
  • Patent number: 8086872
    Abstract: Provided is a method for setting a security channel between an OLT and at least one ONU in an EPON. In detail, a channel is generated by which the OLT makes a reciprocal security capability agreement with the ONU that wants to set a security channel in a discovery interval and then automatically registers the ONU with the security capability agreement. The security channel is set by which the OLT distributes an encryption key for the security with the ONU completed with the security capability agreement. A renewal point of the encryption key is shared by transmitting a message indicative of a time to change the encryption key between the OLT and the ONU both completed with the encryption key distribution.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Ok Kim, Yool Kwon, Bong Tae Kim
  • Patent number: 8084295
    Abstract: Provided is a thin film transistor (TFT) which uses CIS (CuInSe2), including Se, which is a chalcogen-based material, and can provide a rectifying function, and electric and optical switching functions of a diode. The TFT according to the present invention includes, a substrate, a gate electrode formed on a portion of the substrate, an insulating layer covering the substrate and a gate electrode, a plurality of CIS (CuInSe2) films formed on the insulating layer so as to cover the region where the gate electrode is formed; and source/drain regions separated from each other so as to comprise a trench exposing a portion of a surface of the CIS films.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sang Su Lee, Kibong Song, Jeong Dae Suh, Keongam Kim, Doo-Hee Cho
  • Patent number: 8085656
    Abstract: Provided are an apparatus and method for improving transmission control protocol (TCP) performance using path recovery notification over a wireless network. The apparatus includes: a path recovery manager which detects a mobile host recovered from a temporary disconnection state and then outputs a detection signal to notify the detection result; a path recovery notification manager which receives the detection signal and generates an ACK (acknowledgement) packet to inform a transmitting end that the mobile host is recovered; and a first packet transceiver which transmits/receives the generated ACK packet and a data packet. Accordingly, a temporary disconnection state of a wireless network is explicitly informed to a transmitting end so as to transmit only lost packets without performing unnecessary congestion control, thereby improving TCP performance.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: December 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Myung-Jin Lee, Jongik Kim, Daesub Yoon, Ju-Wan Kim