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公开(公告)号：US12095477B2
公开(公告)日：2024-09-17
申请号：US18364421
申请日：2023-08-02
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
CPC classification number: H03M13/1165 , H03M13/1105 , H03M13/255 , H03M13/2792 , H03M13/616 , H03M13/6552 , H04L1/0041 , H04L1/0042 , H04L1/0071 , H04L27/3422 , H04L1/0057
Abstract: A modulator and a modulation method using a non-uniform 16-symbol signal constellation are disclosed. The modulator includes a memory and a processor. The memory receives a codeword corresponding to a low-density parity check (LDPC) code having a code rate of 4/15. The processor maps the codeword to 16 symbols of the non-uniform 16-symbol signal constellation on a 4-bit basis.
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公开(公告)号：US11916572B2
公开(公告)日：2024-02-27
申请号：US17864144
申请日：2022-07-13
Inventor： Sung-Ik Park , Heung-Mook Kim , Sun-Hyoung Kwon , Nam-Ho Hur
CPC classification number: H03M13/1157 , H03M13/1165 , H03M13/1177 , H03M13/616 , H03M13/618
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 64800 and a code rate of 7/15. 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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3.发明公开公开(公告)号：US20230188255A1
公开(公告)日：2023-06-15
申请号：US18165876
申请日：2023-02-07
Inventor： Sung-Ik PARK , Jae-Young Lee , Sun-Hyoung Kwon , Nam-Ho Hur , Heung-Mook Kim
CPC classification number: H04L1/0041 , H04L1/0057 , H04L5/0014 , H04L5/0075 , H04L1/0071 , H04J99/00 , H04L27/2626
Abstract: An apparatus and method for transmitting broadcast signal to which channel bonding is applied are disclosed. The apparatus according to the present invention includes an input formatting unit configured to generate baseband packets corresponding to a plurality of packet types using data corresponding to a physical layer pipe; a stream partitioner configured to partition the baseband packets into a plurality of partitioned streams corresponding to the plurality of packet types; BICM units configured to perform error correction encoding, interleaving and modulation corresponding to the plurality of partitioned streams, respectively; and waveform generators configured to generate RF transmission signals corresponding to the plurality of partitioned streams, respectively.
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公开(公告)号：US11564190B2
公开(公告)日：2023-01-24
申请号：US17735261
申请日：2022-05-03
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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公开(公告)号：US11316536B2
公开(公告)日：2022-04-26
申请号：US16808284
申请日：2020-03-03
Inventor： Sung-Ik Park , Heung-Mook Kim , Sun-Hyoung Kwon , Nam-Ho Hur
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 4/15. 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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Patent Agency Ranking
公开(公告)号：US11303297B2
公开(公告)日：2022-04-12
申请号：US17006552
申请日：2020-08-28
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , 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 64800 and a code rate of 3/15. 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 1024-symbol mapping.
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公开(公告)号：US11177829B2
公开(公告)日：2021-11-16
申请号：US16435283
申请日：2019-06-07
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 3/15. 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 64-symbol mapping.
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公开(公告)号：US11128509B2
公开(公告)日：2021-09-21
申请号：US16760000
申请日：2018-10-31
Inventor： Sung-Ik Park , Jae-Young Lee , Sun-Hyoung Kwon , Nam-Ho Hur , Heung-Mook Kim
Abstract: An apparatus and method for transmitting broadcast signal to which channel bonding is applied are disclosed. The apparatus according to the present invention includes an input formatting unit configured to generate baseband packets corresponding to a plurality of packet types using data corresponding to a physical layer pipe; a stream partitioner configured to partition the baseband packets into a plurality of partitioned streams corresponding to the plurality of packet types; BICM units configured to perform error correction encoding, interleaving and modulation corresponding to the plurality of partitioned streams, respectively; and waveform generators configured to generate RF transmission signals corresponding to the plurality of partitioned streams, respectively.
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公开(公告)号：US10924208B2
公开(公告)日：2021-02-16
申请号：US16328453
申请日：2017-09-08
Inventor： Sun-Hyoung Kwon , Sung-Ik Park , Jae-Young Lee , Bo-Mi Lim , Heung-Mook Kim , Nam-Ho Hur
Abstract: An apparatus and method for generating a broadcast signal frame corresponding to a time interleaver supporting a plurality of operation modes 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; 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 preamble includes a field indicating a start position of a first complete FEC block corresponding to each of physical layer pipes.
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公开(公告)号：US10831599B2
公开(公告)日：2020-11-10
申请号：US16436748
申请日：2019-06-10
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 10/15. 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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