知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

220 条记录 (耗时 0.027 秒)

    DIGITAL BROADCASTING TRANSMISSION AND RECEPTION DEVICES AND METHODS THEREOF
    22.
    发明申请
    DIGITAL BROADCASTING TRANSMISSION AND RECEPTION DEVICES AND METHODS THEREOF 有权
    数字广播传输和接收设备及其方法

    公开(公告)号：US20090052549A1

    公开(公告)日：2009-02-26

    申请号：US12262060

    申请日：2008-10-30

    申请人： Joon-soo KIM ,  Eui-jun Park ,  Yong-deok Chang ,  Hae-joo Jeong

    发明人： Joon-soo KIM ,  Eui-jun Park ,  Yong-deok Chang ,  Hae-joo Jeong

    IPC分类号： H04N7/26

    CPC分类号： H03M13/256 ,  H03M13/2936 ,  H03M13/356 ,  H03M13/6538 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04N21/2383 ,  H04N21/4382

    摘要： Digital broadcasting transmission and reception devices and methods thereof are provided. The digital broadcasting transmission device includes a randomizer which randomizes a dual transport stream including a normal stream and a robust stream, a supplementary reference signal inserter which inserts a certain supplementary reference signal into a stuffing region included in the randomized dual transport stream, a Reed-Solomon (RS) encoder which adds a parity into a parity region included in the dual transport stream, a robust processor which configures a new dual transport stream by convolution-encoding the robust stream among the dual transport stream, an interleaver which interleaves the configured dual transport stream, a trellis encoder which trellis-encode the interleaved dual transport stream, and a modulator which transmits the trellis-encoded dual transport stream. Accordingly, a sub-channel can be provided in which the robust data and the supplementary reference signal will be transmitted.

    摘要翻译： 提供了数字广播发送和接收设备及其方法。 数字广播发送装置包括随机化随机化的包括正常流和鲁棒流的双传输流，附加参考信号插入器，其将特定补充参考信号插入到包括在随机双重传输流中的填充区域中，Reed- Solomon（RS）编码器，其将奇偶校验添加到包括在双传输流中的奇偶校验区域;鲁棒处理器，其通过对双传输流中的鲁棒流进行卷积编码来配置新的双传输流;交织器， 传输流，对编码交织双传输流进行网格编码的网格编码器，以及传输网格编码双传输流的调制器。 因此，可以提供其中将发送鲁棒数据和辅助参考信号的子信道。

    DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA
    23.
    发明申请
    DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA 有权
    数字广播系统和数据处理方法

    公开(公告)号：US20080304602A1

    公开(公告)日：2008-12-11

    申请号：US12061574

    申请日：2008-04-02

    申请人： Jong Moon Kim ,  In Hwan Choi ,  Kook Yeon Kwak ,  Byoung Gill Kim ,  Won Gyu Song ,  Jin Woo Kim ,  Hyoung Gon Lee

    发明人： Jong Moon Kim ,  In Hwan Choi ,  Kook Yeon Kwak ,  Byoung Gill Kim ,  Won Gyu Song ,  Jin Woo Kim ,  Hyoung Gon Lee

    IPC分类号： H04L27/06

    CPC分类号： H03M13/253 ,  H03M13/256 ,  H03M13/2936 ,  H03M13/356 ,  H03M13/6538 ,  H04H20/30 ,  H04H20/426 ,  H04H20/57 ,  H04L1/0006 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  Y02D70/168

    摘要： A digital broadcast system including a broadcast receiving system and data processing method are disclosed. In the broadcast receiving system receiving broadcast signals, the broadcast receiving system includes a transmission parameter decoding unit, a known sequence detector, and a burst controller. The transmission parameter decoding unit detects information on a burst of a received signal from broadcast data having main service data and mobile service data multiplexed therein within a field of the received signal and outputs the detected information on the burst. The known sequence detector receives burst information from the transmission parameter decoding unit and uses the received burst information and known data position information included in the received data, so as to output burst control information. The burst controller uses the burst control information to control power supply of the broadcast receiving system.

    摘要翻译： 公开了一种包括广播接收系统和数据处理方法的数字广播系统。 在接收广播信号的广播接收系统中，广播接收系统包括传输参数解码单元，已知序列检测器和突发控制器。 传输参数解码单元在接收信号的场内从具有主服务数据和多路复用的移动业务数据的广播数据中检测关于接收信号的突发的信息，并将检测到的信息输出到突发。 已知的序列检测器从传输参数解码单元接收突发信息，并使用接收到的突发信息和包括在接收数据中的已知数据位置信息，以便输出突发控制信息。 突发控制器使用突发控制信息来控制广播接收系统的电源。

    System for digital television broadcasting using modified 2/3 trellis coding
    24.
    发明申请
    System for digital television broadcasting using modified 2/3 trellis coding 有权
    使用修改的2/3网格编码的数字电视广播系统

    公开(公告)号：US20080112502A1

    公开(公告)日：2008-05-15

    申请号：US11978462

    申请日：2007-10-29

    申请人： Allen Limberg

    发明人： Allen Limberg

    IPC分类号： H04L27/00

    CPC分类号： H04L27/04 ,  H03M13/253 ,  H03M13/256 ,  H03M13/2732 ,  H03M13/2936 ,  H03M13/6538 ,  H04H20/65 ,  H04H40/27 ,  H04H60/11 ,  H04L27/063

    摘要： 8VSB-compatible DTV broadcasting that employs outer coding of a sort in which interleaved data and outer coding parity are inner coded by the ⅔ trellis code encoder is improved. This is done by recoding each nibble of the interleaved data and outer coding parity in accordance with an anti-Gray code before being inner coded by the ⅔ trellis code encoder. Accordingly, in the DTV receiver an adjacent-bin error during data slicing may generate a double-bit error in a nibble as received, but this is reduced to a single-bit error after the nibble is recoded in accordance with a Gray coding procedure. In one example of such recoding, 10 and 11 nibbles of the interleaved data and outer coding parity are recoded to 11 and 10 nibbles respectively, but the 00 and 01 nibbles are not recoded. In another example of such recoding, 00 and 01 nibbles of the interleaved data and outer coding parity are recoded to 01 and 00 nibbles respectively, but the 10 and 11 nibbles are not recoded. Eight different types of recoding are possible.

    摘要翻译： 采用8VSB兼容的数字电视广播，其采用外部编码，其中交织数据和外部编码奇偶校验由2/3格码编码器进行内部编码。 这是通过在由2/3网格码编码器进行内部编码之前，根据防格雷码对交错数据的每个半字节和外部编码奇偶校验进行编码。 因此，在数字电视接收机中，数据分片期间的相邻二进制位错误可能会在接收到的半字节中产生双位错误，但是在按照格雷编码程序对四位进行重新编码之后，会将其减少到单位错误。 在这种重新编码的一个示例中，交织数据和外部编码奇偶校验的10和11个半字节分别被重新编码为11和10个半字节，但是00和01半字节不被重新编码。 在这种重新编码的另一示例中，交错数据的00和01半字节和外部编码奇偶校验分别被重新编码为01和00半字节，但是10和11个半字节不被重新编码。 可能有八种不同类型的重新编码。

    FEC scheme for encoding two bit-streams
    28.
    发明申请
    FEC scheme for encoding two bit-streams 有权

    公开(公告)号：US20040181743A1

    公开(公告)日：2004-09-16

    申请号：US10806737

    申请日：2004-03-23

    发明人： Vasanth R. Gaddam ,  Dave Bryan ,  Patrick Kelliher

    IPC分类号： H04Q001/20 ,  H04B003/46 ,  H04B017/00 ,  H03M013/03

    CPC分类号： H03M13/253 ,  H03M13/1515 ,  H03M13/256 ,  H03M13/27 ,  H03M13/2936 ,  H03M13/41 ,  H03M13/6538 ,  H04N5/4401

    摘要： An encoding system is configured to allow data to be transmitted at one of two selectable bit-error-rate quality factors. The first bit-error-rate quality factor selection corresponds to the conventional ATSC FEC encoding systems, and the second bit-error-rate quality factor selection provides an ATSC-like FEC encoding scheme that substantially improves the bit-error-rate. The first quality factor selection effects a 2/3 trellis encoding, whereas the higher quality factor selection effects a 1/3 trellis encoding. Because the high-quality trellis encoding rate of 1/3 is half the lower-quality trellis encoding rate of 2/3, the data rate of this high-quality encoded bit-stream is half that of the conventional lower-quality encoded bit-stream. The 1/3 trellis encoding is effected using an ATSC-compatible encoding and a modified symbol mapping. The encoding scheme provides 2:1 data redundancy and the symbol mapping provides a maximum distance for the redundant encoding. By combining techniques that each decrease the likelihood of an uncorrectable error at the receiver, the substantial improvement in bit-error-rate can be achieved. At the receiver, a single trellis decoder with different metric tables is used to decode the two bit-streams, thereby providing substantial compatibility with ATSC-compatible receivers.

    FEC scheme for encoding two bit-streams
    29.
    发明授权
    FEC scheme for encoding two bit-streams 有权
    用于编码两个比特流的FEC方案

    公开(公告)号：US06744822B1

    公开(公告)日：2004-06-01

    申请号：US09638133

    申请日：2000-08-14

    申请人： Vasanth R. Gaddam ,  Dave Bryan ,  Patrick Kelliher

    发明人： Vasanth R. Gaddam ,  Dave Bryan ,  Patrick Kelliher

    IPC分类号： H04L512

    CPC分类号： H03M13/253 ,  H03M13/1515 ,  H03M13/256 ,  H03M13/27 ,  H03M13/2936 ,  H03M13/41 ,  H03M13/6538 ,  H04N5/4401

    摘要： An encoding system is configured to allow data to be transmitted at one of two selectable bit-error-rate quality factors. The first bit-error-rate quality factor selection corresponds to the conventional ATSC FEC encoding systems, and the second bit-error-rate quality factor selection provides an ATSC-like FEC encoding scheme that substantially improves the bit-error-rate. The first quality factor selection effects a ⅔ trellis encoding, whereas the higher quality factor selection effects a ⅓ trellis encoding. Because the high-quality trellis encoding rate of ⅓ is half the lower-quality trellis encoding rate of ⅔, the data rate of this high-quality encoded bit-stream is half that of the conventional lower-quality encoded bit-stream. The ⅓ trellis encoding is effected using an ATSC-compatible encoding and a modified symbol mapping. The encoding scheme provides 2:1 data redundancy and the symbol mapping provides a maximum distance for the redundant encoding. By combining techniques that each decrease the likelihood of an uncorrectable error at the receiver, the substantial improvement in bit-error-rate can be achieved. At the receiver, a single trellis decoder with different metric tables is used to decode the two bit-streams, thereby providing substantial compatibility with ATSC-compatible receivers.

    摘要翻译： 编码系统被配置为允许以两个可选误码率质量因子中的一个发送数据。 第一个误码率质量因子选择对应于传统的ATSC FEC编码系统，第二个误码率质量因子选择提供了基本上提高误比特率的类似ATSC的FEC编码方案。 第一个品质因素选择会影响2/3网格编码，而较高品质因子选择会影响1/3网格编码。 因为1/3的高质量网格编码率是2/3的较低质量网格编码率的一半，因此该高质量编码比特流的数据速率是传统较低质量编码比特流的一半， 流。 使用ATSC兼容编码和修改的符号映射来实现1/3网格编码。 编码方案提供2：1数据冗余，符号映射为冗余编码提供最大距离。 通过组合各种技术，可以降低接收机处的不可校正误差的可能性，可以实现误码率的实质性改善。 在接收机处，使用具有不同度量表的单个网格解码器对两个比特流进行解码，从而提供与ATSC兼容接收机的实质兼容性。