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    • 21. 发明申请
    • Residential ethernet switching device for sub frame-based switching
    • 用于子帧交换的住宅以太网交换设备
    • US20070014279A1
    • 2007-01-18
    • US11481588
    • 2006-07-06
    • Si WangKwan-Soo LeeYun-Je OhJun-Ho KohSang-Ho KimJae-Hun Cho
    • Si WangKwan-Soo LeeYun-Je OhJun-Ho KohSang-Ho KimJae-Hun Cho
    • H04L12/28H04L12/56
    • H04L49/351H04L12/52H04L49/206
    • A residential Ethernet switching device for sub frame-based switching in a residential Ethernet system is provided. The device includes a plurality of reception data path processors for parsing a residential Ethernet frame inputted to the residential Ethernet switching device, as respective residential Ethernet sub frames, and outputting the parsed residential Ethernet sub frames, a switch fabric for switching the residential Ethernet sub frames inputted through the plurality of reception data path processors, a plurality of transmission data path processors for providing an output path for multiplexing and outputting the residential Ethernet sub frames switched through the switch fabric, and a local cycle counter connected to the plurality of reception data path processors, the switch fabric, and the plurality of transmission data path processors, and providing cycle counter information on the respective residential Ethernet sub-frames.
    • 提供住宅以太网系统中用于子帧交换的住宅以太网交换设备。 该设备包括多个接收数据路径处理器,用于解析输入到住宅以太网交换设备的住宅以太网帧作为相应的住宅以太网子帧,并输出解析的住宅以太网子帧,用于切换住宅以太网子帧 通过多个接收数据路径处理器输入的多个传输数据路径处理器,用于提供用于复用和输出通过交换结构切换的住宅以太网子帧的输出路径的多个传输数据路径处理器,以及连接到多个接收数据路径的本地周期计数器 处理器,交换结构和多个传输数据路径处理器,并且在各个住宅以太网子帧上提供周期计数器信息。
    • 22. 发明申请
    • Asynchronous frame transmission method for strictly ensuring beginning of super frame in residential ethernet
    • 用于严格确保住宅以太网超帧启动的异步帧传输方法
    • US20060230147A1
    • 2006-10-12
    • US11399867
    • 2006-04-07
    • Jae-Hun ChoJong-Ho YoonSang-Ho KimYun-Je OhJun-Ho KohHee-Kyung Choi
    • Jae-Hun ChoJong-Ho YoonSang-Ho KimYun-Je OhJun-Ho KohHee-Kyung Choi
    • G06F15/173
    • H04L12/66
    • A method for transmitting asynchronous data includes including: comparing a size of asynchronous data with that of an empty transmission area; inserting the asynchronous data into the empty transmission area when the asynchronous data has a size smaller than or equal to that of the empty transmission area; determining if the empty transmission area has a size larger than a predetermined threshold value when the asynchronous data has a size larger than that of the empty transmission area; transmitting the asynchronous data with the empty transmission area left when the empty transmission area has a size smaller than the predetermined threshold value; and segmenting the asynchronous data according to the size of the empty transmission area when the empty transmission area has a size larger than the predetermined threshold value, inserting the segmented asynchronous data into the empty transmission area, and transmitting remaining segmented asynchronous data in a subsequent transmission cycle.
    • 用于发送异步数据的方法包括:将异步数据的大小与空的传输区域的大小进行比较; 当异步数据的大小小于或等于空传输区域的大小时,将异步数据插入空传输区域; 当所述异步数据的尺寸大于所述空的传输区域的大小时,确定所述空的传输区域是否具有大于预定阈值的大小; 当所述空传输区域具有小于所述预定阈值的大小时,向所述空传输区域发送所述异步数据; 并且当所述空传输区域具有大于所述预定阈值的大小时,根据所述空传输区域的大小来分割所述异步数据,将所述分段的异步数据插入所述空传输区域,以及在随后的传输中发送剩余的分段异步数据 周期。
    • 26. 发明申请
    • Apparatus and method for compensating for PCR and data rate
    • 用于补偿PCR和数据速率的装置和方法
    • US20060120383A1
    • 2006-06-08
    • US11296618
    • 2005-12-07
    • Sang-Ho KimJae-Hun ChoChang-Sup ShimYun-Je OhJun-Ho Koh
    • Sang-Ho KimJae-Hun ChoChang-Sup ShimYun-Je OhJun-Ho Koh
    • H04L12/56H04L12/28
    • H04N21/4305
    • A method and apparatus by which a reception device of a communication system can sense and compensate for an error of a program clock reference (PCR), and can sense and compensate for bit rate variation of transmission data in a transmitted MPEG-2 TS. The method and apparatus compensates for a PCR jitter, or a change in a data bit rate, which may occur in processing an MPEG-2 TS in a reception device of the MPEG-2 TS transmission system, thereby preventing the deterioration of image quality due to the jitter or loss of an input MPEG-2 TS data. The apparatus includes a PAT sensing unit for sensing a PAT from a received MPEG-2 TS, a PMT sensing unit for sensing a PMT based on information provided from the PAT sensing unit, a PCR PID unit for sensing a PCR PID based on information provided from the PMT sensing unit and a PCR data unit for outputting a PCR data based on information provided from the PMT sensing unit and PID information provided from the PCR PID unit. The apparatus also includes a PCR comparison/compensation unit receiving the PCR data from the PCR data unit, comparing the received PCR data with a pre-stored PCR data, and compensating for the pre-stored PCR data, and a data rate comparison/compensation unit for receiving data rate information from the PCR data unit, comparing the received data rate with a pre-stored data rate, and compensating for the pre-stored data rate.
    • 通信系统的接收装置可以感测和补偿程序时钟参考(PCR)的错误的方法和装置,并且可以感测和补偿所发送的MPEG-2TS中的传输数据的比特率变化。 所述方法和装置补偿在MPEG-2 TS传输系统的接收装置中处理MPEG-2 TS时可能发生的PCR抖动或数据比特率的变化,从而防止由于MPEG-2 TS传输系统的接收装置的劣化 输入MPEG-2 TS数据的抖动或丢失。 该装置包括用于从接收的MPEG-2 TS感测PAT的PAT感测单元,用于基于从PAT感测单元提供的信息来感测PMT的PMT感测单元,用于基于提供的信息感测PCR PID的PCR PID单元 来自PMT感测单元和PCR数据单元,用于基于从PMT感测单元提供的信息和从PCR PID单元提供的PID信息输出PCR数据。 该装置还包括PCR比较/补偿单元,从PCR数据单元接收PCR数据,将接收的PCR数据与预先存储的PCR数据进行比较,并补偿预存的PCR数据,以及数据比率比较/补偿 单元,用于从PCR数据单元接收数据速率信息,将接收到的数据速率与预先存储的数据速率进行比较,并补偿预存的数据速率。
    • 30. 发明授权
    • MPEG-2 decoding system and method
    • MPEG-2解码系统及方法
    • US07400652B2
    • 2008-07-15
    • US10861205
    • 2004-06-04
    • Kwan-Lae KimSung-Jin ParkJun-Ho KohYoung-Seok KimYun-Je Oh
    • Kwan-Lae KimSung-Jin ParkJun-Ho KohYoung-Seok KimYun-Je Oh
    • H04H20/28H04H11/02
    • H04N21/4383H04N5/4401H04N21/4334H04N21/434H04N21/4345H04N21/4384
    • In an MPEG-2 decoding system, a transport decoder decodes a transport packet corresponding to a Program Identification (PID) from an input transport stream, and retrieves a Program Association Table/Program Map Table PAT/PMT) from the stream when it is requested to retrieve Program Specific lnformation (PSI). A pre-decoder checks PSI stored in a PSI memory in response to a request to change to a desired channnel, reads PIDs of transport packets for a Packetized Elementary Stream (PES) of a program corresponding to the desired channel from the PSI memory to provide it to the transport decoder, receives the PAT/PMT and updates the contents of the memory using the PAT/PMT. After decoding, PSI previously extracted therefrom is stored in the memory. PIDs of transport packets for the PES of desired program are obtained referring to the stored PSI, and transport packets having the PIDs are retrieved and decoded.
    • 在MPEG-2解码系统中,传输解码器从输入传输流解码对应于节目识别(PID)的传输分组,并且在请求时从流中检索节目关联表/节目映射表PAT / PMT) 检索程序特定信息(PSI)。 响应于要改变到所需信道的请求,预解码器检查存储在PSI存储器中的PSI,从PSI存储器读取对应于期望信道的节目的分组化基本流(PES)的传输分组的PID,以提供 它到传输解码器,接收PAT / PMT,并使用PAT / PMT更新存储器的内容。 在解码之后,先前提取的PSI被存储在存储器中。 通过存储的PSI获得所需节目的PES的传输分组的PID,并且检索并解码具有PID的传输分组。