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公开(公告)号：US20230318679A1
公开(公告)日：2023-10-05
申请号：US18190421
申请日：2023-03-27
Inventor： Jung-Sun UM , Sung-Ik PARK , Hoi-Yoon JUNG , Dong-Joon CHOI , Nam-Ho HUR
IPC: H04B7/06
CPC classification number: H04B7/0669 , H04B7/0697 , H04B7/068
Abstract: Disclosed herein is a method for signal configuration. The method may include evenly dividing, by a signal-bit configuration block, data or information forming signal bits or a signal bitstring and transferring the same to N multiple channels; mapping, by a first spatial path configuration block, a coded bitstring, which is generated through coding and signal processing of the data or information forming the signal bits or the signal bitstring, to cells corresponding to M antennas; and configuring, by a frequency path configuration block, the transmission paths of the cells.
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2.发明公开公开(公告)号：US20230283333A1
公开(公告)日：2023-09-07
申请号：US18176556
申请日：2023-03-01
Inventor： Hoi-Yoon JUNG , Sung-Ik PARK , Jae-Hyun SEO , Bo-Mi LIM , Dong-Joon CHOI , Nam-Ho HUR , Jeong-Chang KIM
IPC: H04B7/0456 , H04L1/00
CPC classification number: H04B7/0469 , H04L1/0071
Abstract: Disclosed herein are an apparatus and method for channel bonding-based multi-antenna signal transmission in a broadcasting system. An apparatus for channel bonding-based multi-antenna signal transmission includes an input formatting unit for converting input data into a Physical Layer Pipe (PLP), a stream partitioning unit for partitioning the PLP into pieces of data to be transmitted to two or more channels, respectively, and two or more transmission units for transmitting the pieces of data resulting from partitioning to corresponding channels through multiple antennas.
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公开(公告)号：US20210203471A1
公开(公告)日：2021-07-01
申请号：US16870241
申请日：2020-05-08
Inventor： Je-Won LEE , Joon-Young JUNG , Dong-Joon CHOI
Abstract: Disclosed herein are an apparatus and method for removing a self-interference signal. The apparatus includes one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program receives an upstream signal for removing self-interference, generates a downstream signal for channel estimation, replicates a self-interference signal in a time domain and a self-interference signal in a frequency domain using the upstream signal and the downstream signal, and removes the self-interference signal from the upstream signal using the replicated self-interference signal in the time domain and the replicated self-interference signal in the frequency domain.
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公开(公告)号：US20210110238A1
公开(公告)日：2021-04-15
申请号：US16869981
申请日：2020-05-08
Inventor： Myung-Sun BAEK , Jin-Hyuk SONG , Byung-Jun BAE , Dong-Joon CHOI
Abstract: Disclosed herein are an apparatus and method for detecting a broadcast signal. The apparatus includes a bootstrap detection unit for detecting whether a bootstrap signal is included in a received broadcast signal based on a preset first bootstrap window and a machine-learning method, a bootstrap offset estimation unit for searching the broadcast signal for the start point of the bootstrap signal using a preset second bootstrap window, estimating a bootstrap offset based on the machine-learning method, and estimating bootstrap symbols from the bootstrap offset, and a demodulation unit for demodulating information included in the broadcast signal from the bootstrap symbols based on the machine-learning method.
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5.发明公开公开(公告)号：US20240163511A1
公开(公告)日：2024-05-16
申请号：US18498792
申请日：2023-10-31
Inventor： Je-Won LEE , Joon-Young JUNG , Dong-Joon CHOI , Eun-Hee HYUN
IPC: H04N21/442 , H04N21/437 , H04N21/44 , H04N21/845
CPC classification number: H04N21/44209 , H04N21/437 , H04N21/44004 , H04N21/8456
Abstract: Disclosed herein is a method for receiving adaptive media streaming. The method may include calculating segment download time for each video quality level based on network throughput, a segment bitrate for the video quality level, segment duration, and a standard deviation of segment bitrates, determining a segment bitrate for maximizing the quality of viewing experience of a user based on the segment download time for each video quality level and a buffer level received from a playback buffer, making a request for the determined segment bitrate, transferring the request to a server, and transferring a corresponding video segment received in response to the request to the playback buffer.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240155014A1
公开(公告)日：2024-05-09
申请号：US18503612
申请日：2023-11-07
Inventor： Joon-Young JUNG , Je-Won LEE , Dong-Joon CHOI , Eun-Hee HYUN
IPC: H04L65/61 , H04N21/218
CPC classification number: H04L65/61 , H04N21/21805
Abstract: Disclosed herein are a hybrid download method and apparatus for multiview streaming. The hybrid download method includes requesting a group download for an n−1-th segment from a server, playing an n−3-th segment at a viewpoint VP1 of a viewer, when a group download request for the n−1-th segment is completed, making a group download request for an n-th segment, when a change in a viewpoint of the viewer occurs at a time at which an n−2-th segment is played, playing a low-quality n−2-th segment at a viewpoint VP3, when the group download for the n-th segment is completed, requesting a single download for a high-quality n−1-th segment corresponding to the viewpoint VP3 from the server, and when the single download for the high-quality n−1-th segment corresponding to the viewpoint VP3 is completed, playing the high-quality n−1-th segment at the viewpoint VP3.
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公开(公告)号：US20200344587A1
公开(公告)日：2020-10-29
申请号：US16814779
申请日：2020-03-10
Inventor： Suk-Hee CHO , Byung-Jun BAE , Woong-Soo NA , Na-Yeon KIM , Dong-Joon CHOI
IPC: H04W4/90
Abstract: Disclosed herein is a method of operating an apparatus for providing a cell broadcast service. The operating method includes receiving, by a transmission device of a broadcaster, a cell broadcast service signal containing an emergency alert from a mobile carrier; converting, by the transmission device, the cell broadcast service signal into a public warning broadcast signal; and transmitting, by the transmission device, the public warning broadcast signal to a mobile switching center or a base station.
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8.发明申请公开(公告)号：US20180145843A1
公开(公告)日：2018-05-24
申请号：US15793650
申请日：2017-10-25
Inventor： Dong-Joon CHOI , Joon-Young JUNG , Nam-Ho HUR
CPC classification number: H04L12/2801 , H04L65/1066 , H04L65/4076 , H04L2012/5615 , H04M7/125 , H04N21/242 , H04N21/6168
Abstract: Disclosed herein is a synchronization method for transmitting a DOCSIS upstream signal, which is performed by an RoIP terminal, the synchronization method including receiving a synchronization (SYNC) message periodically sent by a Cable Modem Termination System (CMTS) and thereby synchronizing a clock and generating a reference time; receiving a ranging request signal from a Cable Modem (CM); including information about a start time of an allocated ranging interval in the ranging request signal, converting the ranging request signal into an IP packet, and transmitting the IP packet to an RoIP headend device over an IP network in order to enable the RoIP headend device to convert the ranging request signal, delivered via the IP network, into an RF signal and transmit the RF signal to the CMTS; and converting a ranging response message delivered from the CMTS into an electric signal and transmitting the electric signal to the CM.
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9.发明公开公开(公告)号：US20240214112A1
公开(公告)日：2024-06-27
申请号：US18540654
申请日：2023-12-14
Inventor： Jae-Hyun SEO , Hoi-Yoon JUNG , Sung-Ik PARK , Bo-Mi LIM , Dong-Joon CHOI , Nam-Ho HUR
CPC classification number: H04L1/0041 , H04L1/0071 , H04L5/0053 , H04L2001/0093
Abstract: Disclosed herein are a method for processing a retransmission broadcast signal using multi-antenna signals based on channel bonding and an apparatus for the same. The apparatus includes a stream multiplexing (muxing) unit for generating a single piece of input data from signals received from two or more reception channels, an input formatting unit for converting the input data into a Physical Layer Pipe (PLP), a stream partitioning unit for segmenting the physical layer pipe into pieces of data to be respectively transmitted over two or more transmission channels, and two or more retransmission-signal-processing units for retransmitting the pieces of data to the respective transmission channels corresponding thereto through multiple transmission antennas.
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公开(公告)号：US20220132452A1
公开(公告)日：2022-04-28
申请号：US17182955
申请日：2021-02-23
Inventor： Soon-Choul KIM , Jae-Young LEE , Hye-Ju OH , Hyun-Jeong YIM , Dong-Joon CHOI
Abstract: Disclosed herein are a method for broadcast gateway signaling using a cloud network and an apparatus for the same. The method includes generating an outer packet corresponding to the outer layer of a tunneling system using an inner packet corresponding to the inner layer of the tunneling system, generating a header of the outer packet, and transmitting the outer packet to a transmitter through a Studio-to-Transmitter Link (STL). The header includes an STL propagation delay time field indicating a reception wait time for an STL stream corresponding to the outer packet.
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