Patents Assigned to Electronics & Telecommunications Research Institut
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Patent number: 10311602Abstract: Provided are a computed tomography device and a computed tomography method. The computed tomography device includes a gantry and an image processing processor. The gantry includes a light source for irradiating light, a detector disposed facing the light source and for receiving the light, and an arm for supporting the light source and the detector. The image processing processor receives a two-dimensional detection image for a subject from the detector. The image processing processor converts the received two-dimensional detection image to two-dimensional detection image data. The image processing processor generates three-dimensional reconstruction image data from the two-dimensional detection image data. A computed tomography device and a computed tomography method according to the inventive concept correct an error of a gantry movement path to provide a stable three-dimensional reconstruction image.Type: GrantFiled: August 22, 2017Date of Patent: June 4, 2019Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTInventors: Jang Hwan Choi, SooYeul Lee
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Publication number: 20170134873Abstract: Disclosed are a multi-channel audio signal processing method and a multi-channel audio signal processing apparatus. The multi-channel audio signal processing method may generate N channel output signals from N/2 channel downmix signals based on an N-N/2-N structure.Type: ApplicationFiled: July 1, 2015Publication date: May 11, 2017Applicant: Electronics & Telecommunications Research Institut eInventors: Seung Kwon BEACK, Jeong Il SEO, Jong Mo SUNG, Tae Jin LEE, Dae Young JANG, Jin Woong KIM
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Publication number: 20150023241Abstract: Disclosed are methods for transmitting and receiving pilot signals in a communication system. A method for transmitting and receiving pilot signal, performed in a first personal base station among a plurality of personal base stations existing within a cell range of a master base station, comprises receiving a cyclic shift set from the master base station; generating pilot signal based on a first cyclic shift value assigned to the first personal base station, wherein the first cyclic shift value is included in the cyclic shift set; and transmitting the generated pilot signal. Thus, performance of channel estimation may be enhanced.Type: ApplicationFiled: July 17, 2014Publication date: January 22, 2015Applicant: Electronics & Telecommunications Research InstitutInventors: Ji Hyung KIM, Jun Hwan LEE, Tae Soo KWON
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Publication number: 20130290330Abstract: Disclosed are a method and an apparatus for extracting a fingerprint of a publication. And disclosed are a system and a method for identifying a publication using a fingerprint. The system for identifying the publication using the fingerprint includes: a fingerprint extraction unit for extracting fingerprints for collected query publications to identify the copyrights infringement; a fingerprint query unit for querying fingerprints of original publications corresponding from the fingerprint extraction unit; a DBMS for storing the fingerprints extracted from the original publications and additional information from the original publications, and providing a search result candidate group which is composed of fingerprints of at least one of the original publications corresponding to the queries of the fingerprint query unit; and a candidate group verification unit for determining copyright infringement for the query publications by verifying the search result candidate group provided from the DBMS.Type: ApplicationFiled: October 13, 2011Publication date: October 31, 2013Applicant: Electronics & Telecommunications Research InstitutInventors: Young Suk Yoon, Jee Hyun Park, Sang Kwang Lee, Jung Hyun Kim, Young Ho Suh, Yong Seok Seo, Seung Jae Lee, Sung Min Kim, Jung Ho Lee, Won Young Yoo
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Patent number: 8254342Abstract: Provided is a method for determining superframe to efficiently perform beacon scheduling by allocating superframe lengths which are different according to a routing depth of sensor nodes in a ZigBee based wireless sensor network. The method for determining a superframe for beacon scheduling, includes the steps of: receiving a beacon from a neighboring node and grasping information on a superframe used by the neighboring nodes; and determining a transmission time and a length of own superframe based on superframe information of the grasped neighboring node.Type: GrantFiled: October 24, 2007Date of Patent: August 28, 2012Assignee: Electronics and Telecommunications Research InstitutInventors: Hoon Jeong, Jong-Oh Lee, Jong-Young Lee, Sun-Joong Kim, Cheol-Sig Pyo, Jong-Suk Chae
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Publication number: 20090293100Abstract: Provided are an apparatus and method for checking Personal Computer (PC) security. The apparatus includes a check module for checking a security configuration of a PC on the basis of a check policy received from a security check server and outputting check results, and a control module for changing the security configuration of the PC on the basis of a control policy received from the security check server and the check results received from the check module. According to the apparatus, a security check agent installed in each PC performs security check and changes a security configuration according to a control policy, such that the security configurations of PCs in a network can be managed collectively.Type: ApplicationFiled: September 4, 2008Publication date: November 26, 2009Applicant: Electronics & Telecommunications Research InstitutInventors: Jung Min KANG, Kang San KIM, Do Hoon LEE
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Publication number: 20080320165Abstract: Provided are a method and system for supporting IPv6 Neighbor Discovery in a point-to-point oriented broadband wireless network. The method includes: an access router in the broadband wireless network receiving a message from a first subscriber station in the broadband wireless network; the access router detecting a Neighbor Discovery message from the received message; and the access router relaying the Neighbor Discovery message to a second subscriber station in the broadband wireless network. The method can support IPv6 Neighbor Discovery where hosts in the point-to-point oriented broadband wireless network share one or multiple prefixes.Type: ApplicationFiled: October 13, 2006Publication date: December 25, 2008Applicant: Electronics & Telecommunications Research InstitutInventors: Hong Seok Jeon, Jung Hoon Jee, Jong Hwa Yi
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Publication number: 20080301444Abstract: An apparatus and method for providing a service that securely and easily shares personal information using a signed callback uniform resource locator (URL) message in a mobile terminal environment are provided. The mobile terminal providing a personal information sharing service using a signed URL message includes; a personal information sharing service module which receives a message that includes a first callback URL and a personal information sharing request and is signed using a private key of a server, and creates a second callback URL by adding a user response result in response to the personal information sharing request to the first callback URL; and an authentication module which verifies a signature of the message using a public key of the server, and signs the second callback URL using a user private key.Type: ApplicationFiled: December 7, 2006Publication date: December 4, 2008Applicant: Electronics & Telecommunications Research InstitutInventors: Seung Hyun Kim, Dae Seon Choi, Jong Hyouk Noh, Sang Rae Cho, Yeong Sub Cho, Seung Hun Jin