Patents by Inventor Eun-Hee Hyun

Eun-Hee Hyun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10951259
    Abstract: Disclosed herein are a method for simultaneously transmitting/receiving upstream and downstream signals using a remote PHY architecture and an apparatus for the same. The method determines whether to divide frequencies depending on whether signal interference occurs among multiple cable modems connected to a cable network, if it is determined to divide the frequencies, categorize the multiple cable modems into multiple groups so that signal interference occurs in each group, but signal interference does not occur between groups, set transmission bands for the multiple groups so that an upstream band and a downstream band of one group alternate with upstream bands and downstream bands of remaining groups by dividing the frequencies in accordance with a number of groups, and cancels, by a remote physical layer (PHY) device located at an optical network terminal of the cable network, self-interference signals for respective groups based on the transmission bands.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: March 16, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Joon-Young Jung, Tae-Kyoon Kim, Eun-Hee Hyun, Heung-Mook Kim
  • Patent number: 10892797
    Abstract: An apparatus and a method for processing an uplink signal of cable broadcasting network including: modulating uplink data to be transmitted to a broadcasting station which is located at an end of the cable broadcasting network into a plurality of symbols; performing a correlation-coding on the plurality of symbols; and outputting an analog radio frequency (RF) signal corresponding to the plurality of correlation-coded symbols are provided.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: January 12, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Myung-Sun Baek, Jin Hyuk Song, Joon Young Jung, Heung Mook Kim, Eun Hee Hyun
  • Publication number: 20200220573
    Abstract: An apparatus and a method for processing an uplink signal of cable broadcasting network including: modulating uplink data to be transmitted to a broadcasting station which is located at an end of the cable broadcasting network into a plurality of symbols; performing a correlation-coding on the plurality of symbols; and outputting an analog radio frequency (RF) signal corresponding to the plurality of correlation-coded symbols are provided.
    Type: Application
    Filed: January 8, 2020
    Publication date: July 9, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Myung-Sun BAEK, Jin Hyuk SONG, Joon Young JUNG, Heung Mook KIM, Eun Hee HYUN
  • Patent number: 10566997
    Abstract: A data compression apparatus includes a lossy compression unit for calculating, in advance, a reference error vector magnitude depending on lossy compression and decompression by removing lower bits from a data signal composed of bitstreams, for setting removal target lower bits satisfying a preset error vector magnitude requirement, and for lossily compressing the data signal by removing the removal target lower bits from the data signal, and a communication unit for transmitting the compressed data signal to a data decompression apparatus.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: February 18, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Je-Won Lee, Eun-Hee Hyun, Heung-Mook Kim, Joon-Young Jung
  • Patent number: 10469100
    Abstract: Disclosed herein are a method for transmitting and receiving compressed data and an apparatus therefor. According to the method for transmitting compressed data, a transmission apparatus for transmitting compressed data standardizes the value of an In-phase/Quadrature-phase (IQ) data sample to a preset type that is selected from among a positive number and a negative number, determines the sample type of the IQ data sample, the value of which is standardized to the preset type, based on a sample type determination rule, generates a compressed bit string based on the compression rule pertaining to the determined sample type, generates compressed data, including at least one of a reference bit corresponding to the sample type, the sign bit of the IQ data sample, and the compressed bit string, for each IQ data sample, and transmits the compressed data to a reception apparatus.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: November 5, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun-Hee Hyun, Je-Won Lee, Heung-Mook Kim, Joon-Young Jung, Tae-Kyoon Kim
  • Publication number: 20190182515
    Abstract: Disclosed herein are an apparatus and method for providing a broadcasting service. The method for providing a broadcasting service is performed using a broadcasting service provision apparatus and a terminal device, and includes performing, by the broadcasting service provision apparatus and the terminal device, initialization using information acquired from a downstream signal received from a Cable Modem Termination System (CMTS), converting, by the terminal device, an upstream signal received from a Cable Modem (CM) into a digital signal, encapsulating the digital signal into an IP packet, and transmitting the IP packet to the broadcasting service provision apparatus, and extracting, by the broadcasting service provision apparatus, the digital signal from the IP packet received from the terminal device, converting the digital signal into an analog signal, and transmitting an upstream signal corresponding to the analog signal to the CMTS.
    Type: Application
    Filed: November 14, 2018
    Publication date: June 13, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Tae-Kyoon Kim, Dong-Joon Choi, Eun-Hee Hyun, Yong-Seong Cho, Joon-Young Jung, Heung-Mook Kim
  • Publication number: 20190173487
    Abstract: Disclosed herein are a method for transmitting and receiving compressed data and an apparatus therefor. According to the method for transmitting compressed data, a transmission apparatus for transmitting compressed data standardizes the value of an In-phase/Quadrature-phase (IQ) data sample to a preset type that is selected from among a positive number and a negative number, determines the sample type of the IQ data sample, the value of which is standardized to the preset type, based on a sample type determination rule, generates a compressed bit string based on the compression rule pertaining to the determined sample type, generates compressed data, including at least one of a reference bit corresponding to the sample type, the sign bit of the IQ data sample, and the compressed bit string, for each IQ data sample, and transmits the compressed data to a reception apparatus.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 6, 2019
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Eun-Hee HYUN, Je-Won LEE, Heung-Mook KIM, Joon-Young JUNG, Tae-Kyoon KIM
  • Publication number: 20190173490
    Abstract: Disclosed herein are an apparatus and method for data compression and decompression based on calculation of an error vector magnitude. A data compression apparatus includes a lossy compression unit for calculating, in advance, a reference error vector magnitude depending on lossy compression and decompression by removing lower bits from a data signal composed of bitstreams, for setting removal target lower bits satisfying a preset error vector magnitude requirement, and for lossily compressing the data signal by removing the removal target lower bits from the data signal, and a communication unit for transmitting the compressed data signal to a data decompression apparatus.
    Type: Application
    Filed: October 12, 2018
    Publication date: June 6, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Je-Won LEE, Eun-Hee HYUN, Heung-Mook KIM, Joon-Young JUNG
  • Publication number: 20190132022
    Abstract: Disclosed herein are a method for simultaneously transmitting/receiving upstream and downstream signals using a remote PHY architecture and an apparatus for the same. The method determines whether to divide frequencies depending on whether signal interference occurs among multiple cable modems connected to a cable network, if it is determined to divide the frequencies, categorize the multiple cable modems into multiple groups so that signal interference occurs in each group, but signal interference does not occur between groups, set transmission bands for the multiple groups so that an upstream band and a downstream band of one group alternate with upstream bands and downstream bands of remaining groups by dividing the frequencies in accordance with a number of groups, and cancels, by a remote physical layer (PHY) device located at an optical network terminal of the cable network, self-interference signals for respective groups based on the transmission bands.
    Type: Application
    Filed: September 14, 2018
    Publication date: May 2, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Joon-Young JUNG, Tae-Kyoon KIM, Eun-Hee HYUN, Heung-Mook KIM
  • Patent number: 8813131
    Abstract: A method and an apparatus of interactive advertising service are provided. The method includes: receiving first advertising contents from a broadcasting advertisement platform; displaying broadcasting according to the first advertising contents on the overall screen together with at least one second advertisement contents interactive indicator indicating that the first advertising contents are linked with second advertising contents; receiving indicated information triggering at least one second advertising contents interactive indicator from an input device; receiving the second advertising contents indicated by the at least one second advertising contents interactive indicator from the broadcasting advertisement platform; and displaying broadcasting according to the second advertisement contents.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: August 19, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyeong Soo Han, Eun Hee Hyun
  • Patent number: 8761056
    Abstract: Disclosed is a system for providing an Evolved Multimedia Broadcast/Multicast Service (EMBMS) chatting service for providing a multi-chatting service. The system comprises at least one of a User Equipment (UE) to request establishment of a chatting channel and to transmit and receive a communication message and contents so as to transmit and receive the communication message with a plurality of mobile subscribers participated in the chatting channel, an evolved Broadcast Multicast-Service Center (eBM-SC) to perform control of an EMBMS service so as to transmit the communication message to the at least one of the UE using the EMBMS service, and a service provider server to transmit, to the eBM-SC, user service information, first bearer service information, and contents for each of the chatting channels, so that the UE transmits and receives the communication message with the plurality of the mobile subscribers participated in the chatting channel.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 24, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun Hee Hyun, Hochoong Cho, Jung Mo Moon, Dae Ik Kim, Mi Young Yun, Sang Ho Lee
  • Patent number: 8743767
    Abstract: Provided are a method of obtaining service information to receive a broadcasting service in a user equipment (UE), and service information announcement methods performable in a service center in charge of multimedia broadcast/multicast service (MBMS) control and a server interoperable with the service center. The method of obtaining MBMS information in a UE includes checking whether or not a previously defined event occurs in order to obtain service information, requesting an external server announcing service information to transmit service information according to whether or not the event occurs, and receiving service information transmitted in response to the service information transmission request and outputting the service information through a user interface (UI).
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: June 3, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun-hee Hyun, Ho-choong Cho, Jae-ho Kim, Sang-ho Lee
  • Patent number: 8711794
    Abstract: Disclosed are a system and a method for receiving an MBMS broadcasting service. In the present invention, in a mobile communication/wireless communication system, an MBMS service is provided by synchronizing a unicast bearer with a multicast bearer through scheduling information mapping at the time of transmitting a broadcast/multicast service through a unicast. Further, the present invention presents even a method for improving quality of experience (QoE) of the service by providing the MBMS service through the multicast bearer and the unicast bearer simultaneously. According to the present invention, MBMS services of various service qualities can be provided depending on wireless quality of a terminal or the capability of the terminal at the time of providing the MBMS service.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: April 29, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Mi Young Yun, Jung Mo Moon, Sang Ho Lee, Eun Hee Hyun, Jai Hyung Cho, Jee Hyeon Na, Chul Park, Sun Hwa Lim, Hyun Suk Roh, Dae Ik Kim, Jae Ho Kim, Yeong Jin Kim, Dae Sik Kim
  • Patent number: 8650592
    Abstract: Provided is a method and apparatus for reducing zapping delay, which may transmit base layer data for each burst in a time-slicing scheme, and output the base layer data of a channel to be changed at the time of changing the channel, thereby reducing the zapping delay.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: February 11, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jai Hyung Cho, Sang Ho Lee, Yeong Jin Kim, Jee Hyeon Na, Jung Mo Moon, Dae Ik Kim, Jae Ho Kim, Eun Hee Hyun, Hyun Suk Roh, Chul Park, Sun Hwa Lim, Mi Young Yun, Ho Choong Cho, Doug Young Suh, Chul Keun Kim, Eun Ju Park
  • Publication number: 20130205333
    Abstract: A method and an apparatus of interactive advertising service are provided. The method includes: receiving first advertising contents from a broadcasting advertisement platform; displaying broadcasting according to the first advertising contents on the overall screen together with at least one second advertisement contents interactive indicator indicating that the first advertising contents are linked with second advertising contents; receiving indicated information triggering at least one second advertising contents interactive indicator from an input device; receiving the second advertising contents indicated by the at least one second advertising contents interactive indicator from the broadcasting advertisement platform; and displaying broadcasting according to the second advertisement contents.
    Type: Application
    Filed: August 14, 2012
    Publication date: August 8, 2013
    Applicant: Electronics and Telecommunications Reasearch Institute
    Inventors: Kyeong Soo HAN, Eun Hee HYUN
  • Patent number: 8289892
    Abstract: Provided is a broadcast multicast service control system capable of distributively processing excessively given load under environments that have to offer MBMS service by linking with several mobile communication networks, and a control method thereof. The service control system provides a multimedia broadcast multicast service including a service announcement function of announcing service information, a security function of executing generation and distribution of keys for user authentication and information protection, and a proxy and transport function of transmitting/receiving control signals and traffics to/from a mobile communication network to provide the multimedia broadcast multicast service, and the service control system includes: a plurality of service control units, a load management unit, a service distribution policy management unit, and a processing load distribution policy management unit.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: October 16, 2012
    Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.
    Inventors: Eun-Hee Hyun, Cheol-Hye Cho, Young-Jick Bahg
  • Publication number: 20120163274
    Abstract: Disclosed are a system and a method for receiving an MBMS broadcasting service. In the present invention, in a mobile communication/wireless communication system, an MBMS service is provided by synchronizing a unicast bearer with a multicast bearer through scheduling information mapping at the time of transmitting a broadcast/multicast service through a unicast. Further, the present invention presents even a method for improving quality of experience (QoE) of the service by providing the MBMS service through the multicast bearer and the unicast bearer simultaneously. According to the present invention, MBMS services of various service qualities can be provided depending on wireless quality of a terminal or the capability of the terminal at the time of providing the MBMS service.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Mi Young YUN, Jung Mo MOON, Sang Ho LEE, Eun Hee HYUN, Jai Hyung CHO, Jee Hyeon NA, Chul PARK, Sun Hwa LIM, Hyun Suk ROH, Dae Ik KIM, Jae Ho KIM, Yeong Jin KIM, Dae Sik KIM
  • Publication number: 20120099504
    Abstract: Disclosed is a system for providing an Evolved Multimedia Broadcast/Multicast Service (EMBMS) chatting service for providing a multi-chatting service. The system comprises at least one of a User Equipment (UE) to request establishment of a chatting channel and to transmit and receive a communication message and contents so as to transmit and receive the communication message with a plurality of mobile subscribers participated in the chatting channel, an evolved Broadcast Multicast-Service Center (eBM-SC) to perform control of an EMBMS service so as to transmit the communication message to the at least one of the UE using the EMBMS service, and a service provider server to transmit, to the eBM-SC, user service information, first bearer service information, and contents for each of the chatting channels, so that the UE transmits and receives the communication message with the plurality of the mobile subscribers participated in the chatting channel.
    Type: Application
    Filed: September 23, 2011
    Publication date: April 26, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Eun Hee HYUN, Hochoong CHO, Jung Mo MOON, Dae Ik KIM, Mi Young YUN, Sang Ho LEE
  • Patent number: RE43789
    Abstract: Disclosed are an SIP-based user mobility service providing apparatus and method using user position information obtained by a sensing apparatus. When a user enters a specific region, a gateway including a sensing management module carries out SIP registration for several terminals existing in the specific region in place of user agents of the terminals. The sensing management module transmits an SIP registration message to an SIP proxy server and notifies the terminals of the completion of SIP registration. Then, the user receives a call using the same kind of a terminal as a specific terminal previously set on the basis of a user's preferences among the terminals in the specific region.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: November 6, 2012
    Assignee: Pantech Co., Ltd.
    Inventors: Eun-Hee Hyun, Young-Jick Bahg
  • Patent number: RE44620
    Abstract: Disclosed are an SIP-based user mobility service providing apparatus and method using user position information obtained by a sensing apparatus. When a user enters a specific region, a gateway including a sensing management module carries out SIP registration for several terminals existing in the specific region in place of user agents of the terminals. The sensing management module transmits an SIP registration message to an SIP proxy server and notifies the terminals of the completion of SIP registration. Then, the user receives a call using the same kind of a terminal as a specific terminal previously set on the basis of a user's preferences among the terminals in the specific region.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: December 3, 2013
    Assignee: Pantech Co., Ltd.
    Inventors: Eun-Hee Hyun, Young-Jick Bahg