知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

81 records (took 0.027 seconds)

    Digital television system
    62.
    发明授权
    Digital television system 有权
    数字电视系统

    公开(公告)号：US08743971B2

    公开(公告)日：2014-06-03

    申请号：US12831178

    申请日：2010-07-06

    Applicant: In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    Inventor： In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    IPC: H04N7/12

    CPC classification number: H04N19/88 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/006 ,  H04L1/0071 ,  H04L27/02 ,  H04L65/607 ,  H04N5/4401 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/2383 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4382

    Abstract: Disclosed is a digital television system carrying out modulation/demodulation by VSB (vestigial side band). A VSB transmitter includes an additional error correction encoder designed in a manner that a signal mapping of a TCM encoder is considered, a multiplexer (MUX), a TCM encoder operating in a manner corresponding to state transition processes of the additional error correction encoder, and a signal transmission part including an RF converter. And, A VSB receiver includes a signal receiver part receiving a signal transmitted from the transmitter, a TCM decoder, a signal processing part including a derandomizer, and an additional error correction decoder part.

    Abstract translation: 公开了通过VSB（残留边带）进行调制/解调的数字电视系统。 VSB发射机包括以考虑TCM编码器的信号映射的方式设计的附加纠错编码器，多路复用器（MUX），以与附加纠错编码器的状态转换处理相对应的方式工作的TCM编码器，以及 包括RF转换器的信号传输部分。 并且，VSB接收机包括接收从发射机发送的信号的信号接收机部分，TCM解码器，包括去扩频器的信号处理部分和附加纠错解码器部分。

    Method and apparatus for receiving data using multiple antennas in a communication system
    63.
    发明授权
    Method and apparatus for receiving data using multiple antennas in a communication system 有权
    用于在通信系统中使用多个天线接收数据的方法和装置

    公开(公告)号：US08121565B2

    公开(公告)日：2012-02-21

    申请号：US11961179

    申请日：2007-12-20

    Applicant: Jong-Hun Rhee ,  Min-Goo Kim ,  Young Mo Gu

    Inventor： Jong-Hun Rhee ,  Min-Goo Kim ,  Young Mo Gu

    IPC: H04B17/02

    CPC classification number: H04B7/0848 ,  H04B7/0854 ,  H04B7/0857

    Abstract: A method and apparatus for receiving data using multiple antennas in a communication system are provided. A received signal-combining scheme is determined according to the strength of an interference signal included in the signals received from the antennas. The signals received from the antennas are combined according to the determined received signal-combining scheme. In this manner, the method and apparatus adaptively use a received data-combining scheme according to the channel condition, thereby ensuring optimal reception performance.

    Abstract translation: 提供一种在通信系统中使用多个天线接收数据的方法和装置。 根据从天线接收的信号中包含的干扰信号的强度来确定接收到的信号组合方案。 从天线接收的信号根据确定的接收信号组合方案进行组合。 以这种方式，该方法和装置根据信道条件自适应地使用接收的数据组合方案，从而确保最佳的接收性能。

    VSB COMMUNICATION SYSTEM
    66.
    发明申请
    VSB COMMUNICATION SYSTEM 有权
    VSB通信系统

    公开(公告)号：US20100122126A1

    公开(公告)日：2010-05-13

    申请号：US12687108

    申请日：2010-01-13

    Applicant: In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    Inventor： In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    IPC: H03M13/00 ,  G06F11/00 ,  H04L27/06

    CPC classification number: H04N19/0086 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0046 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071 ,  H04N19/46 ,  H04N19/66 ,  H04N19/68 ,  H04N21/2383 ,  H04N21/4382

    Abstract: A VSB communication system comprises a VSB transmission system and a VSB reception system. The VSB transmission system multiplexes a coded MPEG data and a coded supplemental data having a null sequence inserted therein, with required multiplexing information included in a field synchronization signal or in a supplemental data according to a number of the supplemental data packets being transmitted. The VSB reception system detects the required multiplexing information from the field synchronization signal or the supplemental data and decodes the multiplexed data by using the null sequence and the detected multiplexing information, as well as demultiplexes the multiplexed data into the MPEG data and the supplemental data.

    Abstract translation: VSB通信系统包括VSB传输系统和VSB接收系统。 VSB传输系统根据被发送的补充数据分组的数量，将包含在字段同步信号中的所需复用信息或补充数据中的编码MPEG数据和其中插入有空序列的编码补充数据复用。 VSB接收系统从场同步信号或补充数据检测所需的复用信息，并通过使用零序列和检测到的复用信息对多路复用数据进行解码，并将复用的数据解复用为MPEG数据和补充数据。

    VSB transmission system
    68.
    发明授权
    VSB transmission system 有权
    VSB传输系统

    公开(公告)号：US07577208B2

    公开(公告)日：2009-08-18

    申请号：US10897936

    申请日：2004-07-23

    Applicant: In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    Inventor： In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    IPC: H04L23/02

    CPC classification number: H04L1/006 ,  H03M13/23 ,  H03M13/256 ,  H03M13/2939 ,  H04L1/0041 ,  H04L1/0065 ,  H04L27/02

    Abstract: A vestigial sideband (VSB) modulation transmission system and, a method for encoding an input signal in the system are disclosed. According to the present invention, the VSB transmission system includes a convolutional encoder for encoding an input signal, a trellis-coded modulation (TCM) encoder for encoding the convolutionally encoded signal, and a signal mapper mapping the trellis-coded signal to generate a corresponding output signal. Different types of the convolutional encoders are explored, and the experimental results showing the performances of the VSB systems incorporating each type of encoders reveals that a reliable data transmission can be achieved even at a lower input signal to noise ratio when a convolutional encoder is used as an error-correcting encoder in a VSB system.

    Abstract translation: 公开了一种残留边带（VSB）调制传输系统和一种用于对系统中的输入信号进行编码的方法。 根据本发明，VSB传输系统包括用于对输入信号进行编码的卷积编码器，用于对卷积编码信号进行编码的网格编码调制（TCM）编码器，以及映射网格编码信号以生成相应的 输出信号。 探索了不同类型的卷积编码器，并且显示了包含各种类型的编码器的VSB系统的性能的实验结果表明，即使使用卷积编码器作为较低的输入信噪比，也可以实现可靠的数据传输 VSB系统中的纠错编码器。

    Communication system in digital television
    69.
    发明授权
    Communication system in digital television 有权
    数字电视通信系统

    公开(公告)号：US07551236B2

    公开(公告)日：2009-06-23

    申请号：US11552062

    申请日：2006-10-23

    Applicant: In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    Inventor： In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

    IPC: H04N5/44

    CPC classification number: H04N21/4382 ,  H04L27/02 ,  H04N21/2383

    Abstract: Disclosed is a digital communication system. A transmission system includes an error correction encoder part carrying out an error correction encoding for additional data inputted through a first path, a multiplexer (MUX) part, a control part, a channel coding part carrying out an RS encoding and a TCM encoding, and a VSB transmission part modulating the channel-coded data by a VSB method and outputting the modulated data. A receiver system includes a tuner part receiving and tuning additional data and ATSC data transmitted through a same channel, a TCM decoder decoding and outputting the ATSC data and additional data, a deinterleaver deinterleaving data outputted from the TCM decoder, a demultiplexer demultiplexing along a first path (ATSC) or a second path (additional data) in accordance with a kind of output data of the deinterleaver, a limiter carrying out a hard decision on data outputted by the first path, an ATSC decoder part including a derandomizer, and an additional error correction decoder part decoding additional-error-encoded data on additional data outputted through the second path.

    Abstract translation: 公开了一种数字通信系统。 传输系统包括对通过第一路径输入的附加数据进行纠错编码的纠错编码器部分，多路复用器（MUX）部分，控制部分，执行RS编码和TCM编码的信道编码部分，以及 VSB传输部分，通过VSB方法对信道编码数据进行调制，并输出调制数据。 接收机系统包括：调谐器部分，接收并调谐附加数据和通过同一信道传输的ATSC数据;解码和输出ATSC数据和附加数据的TCM解码器;从TCM解码器输出的解交织器去交错数据;解复用器，沿第一 路径（ATSC）或第二路径（附加数据），根据解交织器的输出数据的种类，对第一路径输出的数据执行硬判决的限制器，包括脱机器的ATSC解码器部分和附加 纠错解码器部分解码通过第二路径输出的附加数据的附加误差编码数据。

Patent Agency Ranking