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    • 2. 发明申请
    • DML REPLICATION WITH LOGICAL LOG SHIPPING
    • DML代理与LOGICAL LOG船运
    • US20150149409A1
    • 2015-05-28
    • US14302320
    • 2014-06-11
    • Joo Yeon LeeJuchang LeeKyu Hwan KimChul Won LeeYong Sik KwonSang Kyun Cha
    • Joo Yeon LeeJuchang LeeKyu Hwan KimChul Won LeeYong Sik KwonSang Kyun Cha
    • G06F17/30
    • G06F17/30575
    • Technologies are described for performing replication within a database environment. For example, replication of database data can be performed using data manipulation language (DML) statements and logical logs. A database node can execute a DML statement, create a logical log comprising the DML statement, and insert the logical log into a logical log queue. The logical log can be sent to one or more other database nodes for execution of the DML statement stored within the logical log. Logical logs can be grouped for sending to other nodes. Logical logs can be executed on a first node and one or more other nodes within the same transaction boundary. Execution of DML statements can be decoupled from sending, receiving, grouping, and/or processing of logical logs.
    • 描述了在数据库环境中执行复制的技术。 例如,可以使用数据操作语言(DML)语句和逻辑日志来执行数据库数据的复制。 数据库节点可以执行DML语句,创建包含DML语句的逻辑日志,并将逻辑日志插入到逻辑日志队列中。 可以将逻辑日志发送到一个或多个其他数据库节点,以执行逻辑日志中存储的DML语句。 逻辑日志可以分组发送到其他节点。 逻辑日志可以在同一事务边界内的第一个节点和一个或多个其他节点上执行。 DML语句的执行可以与逻辑日志的发送,接收,分组和/或处理分离。
    • 6. 发明授权
    • Digital broadcast transmitter/receiver having an improved receiving performance and signal processing method thereof
    • 具有改进的接收性能的数字广播发射机/接收机及其信号处理方法
    • US08537918B2
    • 2013-09-17
    • US12262773
    • 2008-10-31
    • Eui-jun ParkYong-sik KwonJoon-soo KimJung-pil YuJin-hee JeongKum-ran JiJong-hun Kim
    • Eui-jun ParkYong-sik KwonJoon-soo KimJung-pil YuJin-hee JeongKum-ran JiJong-hun Kim
    • H04L5/12
    • H04N21/2383H03M13/253H03M13/2936H04H60/07H04L1/0065H04L25/03286H04N21/23611H04N21/4346H04N21/4382
    • A digital broadcast transmitting/receiving system, and a signal processing method thereof, includes a randomizer for randomizing a transport stream into a specified position of which stuff bytes are inserted, a stuff-byte exchanger for replacing the stuff bytes included in data output from the randomizer with specified known data, an RS encoder for performing an RS-encoding of data output from the stuff-byte exchanger, an interleaver for interleaving data output from the RS encoder, a trellis encoder for performing a trellis encoding of data output from the interleaver, an RS parity generator for generating a parity by performing an RS encoding of data output from the RS encoder, and outputting the generated parity to the trellis encoder, and a modulator/RF converter for modulating data output from the trellis encoder and performing an RF up-converting of the modulated data. The digital broadcast receiving performance can be improved even in an inferior multi-path channel by detecting the known data from the received signal and using the known data for synchronization and equalization in a digital broadcast receiver.
    • 数字广播发送/接收系统及其信号处理方法包括随机化器,用于将传输流随机化到插入了填充字节的指定位置;填充字节交换器,用于替换包含在 具有指定已知数据的随机化器,用于执行从填充字节交换器输出的数据的RS编码的RS编码器,用于交织从RS编码器输出的数据的交织器,用于执行从交织器输出的数据的网格编码的网格编码器 RS奇偶校验发生器,用于通过对从RS编码器输出的数据进行RS编码,并将产生的奇偶校验输出到网格编码器来产生奇偶校验;以及调制器/ RF转换器,用于调制从网格编码器输出的数据并执行RF 调制数据的上变频。 通过从接收到的信号中检测已知的数据,并在数字广播接收机中使用已知的数据进行同步和均衡,即使在较差的多路径信道中也可以提高数字广播接收性能。