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    Apparatus and method for transmitting and receiving a quasi-cyclic low density parity check code in a multimedia communication system
    61.
    发明授权
    Apparatus and method for transmitting and receiving a quasi-cyclic low density parity check code in a multimedia communication system 有权
    一种用于在多媒体通信系统中发送和接收准循环低密度奇偶校验码的装置和方法

    公开(公告)号：US09059741B2

    公开(公告)日：2015-06-16

    申请号：US14579146

    申请日：2014-12-22

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hyun-Koo Yang ,  Sung-Hee Hwang ,  Seho Myung

    IPC: H03M13/00 ,  G06F11/00 ,  H03M13/11

    CPC classification number: H03M13/116 ,  H03M13/1171 ,  H03M13/611 ,  H03M13/616 ,  H03M13/618 ,  H03M13/6362 ,  H03M13/6516 ,  H03M13/6544 ,  H04L1/0041

    Abstract: A method is provided for transmitting a Low Density Parity Check (LDPC) code by a signal transmission apparatus in a multimedia system. The method includes generating the LDPC code based on a resulting parity check matrix, which is generated by performing a scaling down operation on a base parity check matrix; and transmitting the LDPC code. The scaling down operation is performed based on a scaling factor for determining a size of each permutation matrix in the resulting parity check matrix and a size of each zero matrix included in the resulting parity check matrix, and the scaling factor is determined based on a number of column blocks included in the base parity check matrix and a size of each permutation matrix included in the base parity check matrix.

    Abstract translation: 提供一种用于通过多媒体系统中的信号发送装置发送低密度奇偶校验（LDPC）码的方法。 该方法包括：通过对基本奇偶校验矩阵执行缩小运算而生成的基于得到的奇偶校验矩阵的LDPC码; 以及发送LDPC码。 基于用于确定所得到的奇偶校验矩阵中的每个置换矩阵的大小的缩放因子以及所得到的奇偶校验矩阵中包括的每个零矩阵的大小来执行缩小运算，并且缩放因子基于数量 包括在基本奇偶校验矩阵中的列块和包括在基本奇偶校验矩阵中的每个置换矩阵的大小。

    Apparatus and method for transmitting and receiving a quasi-cyclic low density parity check code in a multimedia communication system
    62.
    发明授权
    Apparatus and method for transmitting and receiving a quasi-cyclic low density parity check code in a multimedia communication system 有权
    一种用于在多媒体通信系统中发送和接收准循环低密度奇偶校验码的装置和方法

    公开(公告)号：US08918697B2

    公开(公告)日：2014-12-23

    申请号：US13674651

    申请日：2012-11-12

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hyun-Koo Yang ,  Sung-Hee Hwang ,  Seho Myung

    IPC: H03M13/00 ,  G06F11/00 ,  H03M13/11

    CPC classification number: H03M13/116 ,  H03M13/1171 ,  H03M13/611 ,  H03M13/616 ,  H03M13/618 ,  H03M13/6362 ,  H03M13/6516 ,  H03M13/6544 ,  H04L1/0041

    Abstract: An apparatus and method are provided for transmitting and receiving a quasi-cyclic Low Density Parity Check (LDPC) code in a multimedia communication system. In the method, a signal transmission apparatus generates a quasi-cyclic LDPC code, and transmits the quasi-cyclic LDPC code to a signal reception apparatus. The quasi-cyclic LDPC code is generated by encoding an information word vector using a child parity check matrix, generated by performing one of a scaling operation, a row separation operation, and a row merge operation on a parent parity check matrix. In the scaling operation, a size of the child parity check matrix is determined. In the row separation operation, each of rows included in the parent parity check matrix is separated. In the row merge operation, the rows included in the parent parity check matrix are merged.

    Abstract translation: 提供了一种用于在多媒体通信系统中发送和接收准循环低密度奇偶校验（LDPC）码的装置和方法。 在该方法中，信号发送装置生成准循环LDPC码，并将准循环LDPC码发送到信号接收装置。 通过对父校验矩阵执行缩放操作，行分离操作和行合并操作之一生成的子奇偶校验矩阵来生成准循环LDPC码。 在缩放操作中，确定子奇偶校验矩阵的大小。 在行分离操作中，包括在父奇偶校验矩阵中的行中的每一行被分离。 在行合并操作中，包含在父校验矩阵中的行被合并。

    APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AN APPLICATION LAYER-FORWARD ERROR CORRECTION PACKET IN MULTIMEDIA COMMUNICATION SYSTEM
    64.
    发明申请
    APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AN APPLICATION LAYER-FORWARD ERROR CORRECTION PACKET IN MULTIMEDIA COMMUNICATION SYSTEM 有权
    用于传输和接收多媒体通信系统中的应用层前向纠错分组的装置和方法

    公开(公告)号：US20130117638A1

    公开(公告)日：2013-05-09

    申请号：US13672233

    申请日：2012-11-08

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hyun-Koo Yang ,  Sung-Hee Hwang ,  Seho Myung

    IPC: H03M13/05

    CPC classification number: H04L1/0041 ,  H03M13/05 ,  H03M13/373 ,  H03M13/6362 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0068

    Abstract: An apparatus and method for transmitting and receiving an Application Layer-Forward Error Correction (AL-FEC) packet in a multimedia communication system are provided. In the AL-FEC packet transmission method, an AL-FEC packet transmission apparatus generates AL-FEC packets, and transmits the AL-FEC packets to an AL-FEC packet reception apparatus, wherein each of the AL-FEC packets includes an AL-FEC codeword symbol and an AL-FEC header, the AL-FEC codeword symbol is one of AL-FEC codeword symbols included in an AL-FEC codeword block, and the AL-FEC header includes order information indicating an order of an AL-FEC codeword symbol into which the AL-FEC header is inserted among the AL-FEC codeword symbols included in the AL-FEC codeword block.

    Abstract translation: 提供了一种用于在多媒体通信系统中发送和接收应用层前向纠错（AL-FEC）分组的装置和方法。 在AL-FEC分组发送方法中，AL-FEC分组发送装置生成AL-FEC分组，并将AL-FEC分组发送到AL-FEC分组接收装置，其中，每个AL-FEC分组包括AL- FEC码字符号和AL-FEC报头，AL-FEC码字符号是包括在AL-FEC码字块中的AL-FEC码字符号之一，并且AL-FEC报头包括指示AL-FEC的顺序的顺序信息 在包括在AL-FEC码字块中的AL-FEC码字符号之间插入AL-FEC头的码字符号。

    Method and apparatus for providing broadcast service
    66.
    发明授权
    Method and apparatus for providing broadcast service 有权

    公开(公告)号：US11483627B2

    公开(公告)日：2022-10-25

    申请号：US17520195

    申请日：2021-11-05

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hyun-Koo Yang ,  Dong-Yeon Kim ,  Kyung-Mo Park ,  Jae-Hyeon Bae ,  Young-Wan So

    IPC: H04N21/6334 ,  H04N21/438 ,  H04N21/643 ,  G06F21/64 ,  H04N21/2362

    Abstract: A method for providing a broadcast service is provided. The method includes transmitting a user datagram protocol (UDP)/internet protocol (IP) packet including a first message, the first message containing information about a message to be signed and transmitted, and transmitting a moving picture experts group (MPEG) media transport protocol (MMTP) packet including a second message, the second message containing information about the broadcast service and information indicating whether the information about the broadcast service is signed. The first message includes an identifier of a key used to verify a signature of the message to be transmitted and signed and an identifier of a hash algorithm used to calculate a hash value of the message to be transmitted and signed.

    Method and device for transmitting or receiving broadcast service in multimedia service system
    68.
    发明授权
    Method and device for transmitting or receiving broadcast service in multimedia service system 有权

    公开(公告)号：US11368246B2

    公开(公告)日：2022-06-21

    申请号：US16753197

    申请日：2018-10-15

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Jae-Hyeon Bae ,  Young-Wan So ,  Dong-Yeon Kim ,  Hyun-Koo Yang

    IPC: H04L1/00 ,  H03M13/05

    Abstract: The present invention relates to a method and device for transmitting or receiving a broadcast service including a packet, which is generated using an application layer forward error correction (AL-FEC) scheme, in a multimedia service system. An embodiment of the present invention provides a method for transmitting a broadcast service by a transmitter, the method comprising the steps of: determining one forward error correction (FEC) scheme for a broadcast service among multiple FEC schemes; configuring a signaling message so as to include an identifier indicating the determined FEC scheme; and transmitting the configured signaling message.

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