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公开(公告)号：US11711096B2
公开(公告)日：2023-07-25
申请号：US17835651
申请日：2022-06-08
Inventor： Sung-Ik Park , Heung-Mook Kim , Sun-Hyoung Kwon , Nam-Ho Hur
CPC classification number: H03M13/1157 , H03M13/036 , H03M13/1165 , H03M13/1185 , H03M13/616 , H03M13/2792 , H03M13/6552 , H04L1/0041 , H04L1/0043 , H04L1/0057 , H04L1/0058 , H04L1/0071
Abstract: A low density parity check (LDPC) encoder, an LDPC decoder, and an LDPC encoding method are disclosed. The LDPC encoder includes first memory, second memory, and a processor. The first memory stores an LDPC codeword having a length of 16200 and a code rate of 3/15. The second memory is initialized to 0. The processor generates the LDPC codeword corresponding to information bits by performing accumulation with respect to the second memory using a sequence corresponding to a parity check matrix (PCM).
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公开(公告)号：US11695433B2
公开(公告)日：2023-07-04
申请号：US17522990
申请日：2021-11-10
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , Jae-Young Lee , Heung-Mook Kim
CPC classification number: H03M13/2792 , H03M13/255 , H03M13/2778 , H03M13/618 , H04L1/0068 , H03M13/1148 , H03M13/1165 , H03M13/152 , H03M13/253 , H03M13/2906 , H03M13/6362 , H04L1/0041 , H04L1/0058 , H04L1/0071
Abstract: A parity interleaving apparatus and method for fixed length signaling information are disclosed. A parity interleaving apparatus according to an embodiment of the present invention includes a processor configured to generate a parity bit string for parity puncturing by segmenting parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15, into a plurality of groups, and group-wise interleaving the groups using an order of group-wise interleaving; and memory configured to provide the parity bit string for parity puncturing to a parity puncturing unit.
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公开(公告)号：US11677421B2
公开(公告)日：2023-06-13
申请号：US17845614
申请日：2022-06-21
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
CPC classification number: H03M13/2757 , H03M13/1102 , H03M13/116 , H03M13/1185 , H03M13/255 , H03M13/2778 , H03M13/2792 , H03M13/616 , H03M13/6552 , H04L1/0041 , H04L1/0057 , H04L1/0058 , H04L1/0071 , H04L27/20 , H04L27/3416
Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 7/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for quadrature phase shift keying (QPSK) modulation.
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公开(公告)号：US11652853B2
公开(公告)日：2023-05-16
申请号：US17314276
申请日：2021-05-07
Inventor： Hoi-Yoon Jung , Sung-Ik Park , Heung-Mook Kim , Nam-Ho Hur , David Gomez-Barquero , Eduardo Garro , Carlos Barjau Estevan
IPC: H04L65/1023 , H04L65/1069 , H04W28/08 , H04L65/80
CPC classification number: H04L65/1023 , H04L65/1069 , H04L65/80 , H04W28/0819
Abstract: Disclosed herein is an integrated core network of 5G and ATSC 3.0. The integrated core network of 5G and ATSC 3.0 includes multiple control plane entities and a user plane entity, and further includes an ATSC 3.0 gateway, thereby enabling multimedia content transmitted from the ATSC 3.0 gateway to the user plane entity under the control of the control entity to be delivered to user equipment over an ATSC 3.0 terrestrial network. The ATSC 3.0 gateway may include an ATSC 3.0 Control Plane Gateway (CP-GW) connected between the user plane entity and the multiple control plane entities and an ATSC 3.0 User Plane Gateway (UP-GW) connected to the user plane entity.
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公开(公告)号：US11646752B2
公开(公告)日：2023-05-09
申请号：US17479763
申请日：2021-09-20
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
CPC classification number: H03M13/1165 , H03M13/255 , H03M13/271 , H03M13/2778
Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 4/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 4096-symbol mapping.
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Patent Agency Ranking
公开(公告)号：US11632136B2
公开(公告)日：2023-04-18
申请号：US17240801
申请日：2021-04-26
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , Bo-Mi Lim , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 256-symbol mapping.
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227.发明授权公开(公告)号：US11616864B2
公开(公告)日：2023-03-28
申请号：US17153750
申请日：2021-01-20
Inventor： Jae-Young Lee , Sung-Ik Park , Sun-Hyoung Kwon , Bo-Mi Lim , Heung-Mook Kim
Abstract: An apparatus and method for generating a broadcast signal frame for signaling a time interleaving mode are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a time interleaver configured to generate a time-interleaved signal by performing time interleaving on a BICM output signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling a time interleaving mode corresponding to the time interleaver for each of physical layer pipes (PLPs).
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公开(公告)号：US11616600B2
公开(公告)日：2023-03-28
申请号：US17527013
申请日：2021-11-15
Inventor： Sun-Hyoung Kwon , Jae-Young Lee , Sung-Ik Park , Bo-Mi Lim , Heung-Mook Kim , Jin-Hyuk Song
Abstract: An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time -interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver, the time interleaver uses one of time interleaver groups, and a boundary between the time interleaver groups is a boundary between Physical Layer Pipes (PLPs) of a core layer corresponding to the core layer signal.
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公开(公告)号：US11496978B2
公开(公告)日：2022-11-08
申请号：US17374388
申请日：2021-07-13
Inventor： Jae-Young Lee , Sung-Ik Park , Sun-Hyoung Kwon , Heung-Mook Kim , Nam-Ho Hur
Abstract: Disclosed herein are a gateway-signaling method for frequency/timing offsets and an apparatus for the same. An apparatus for transmitting a broadcast signal according to an embodiment of the present invention includes a frequency/timing decision unit for determining a center frequency to which a frequency offset is applied using a carrier offset, which is identified using a timing and a management packet transmitted through a Studio-to-Transmitter Link (STL); and an RF signal generation unit for generating an RF signal to be transmitted, which corresponds to the center frequency.
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230.发明授权公开(公告)号：US11451649B2
公开(公告)日：2022-09-20
申请号：US16840565
申请日：2020-04-06
Inventor： Jae-Young Lee , Heung-Mook Kim , Sung-Ik Park , Sun-Hyoung Kwon
IPC: H04J3/24 , H04L69/324 , H04L1/00 , H04L5/00 , H04L69/323 , H04H60/07
Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information shared by the core layer signal and the enhanced layer signal, using the time-interleaved signal.
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