专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

US20050047341A1 Device for filtering out null packet for MPEG-2 transmission 有权
标题翻译：用于过滤出用于MPEG-2传输的空分组的装置
公开(公告)号：US20050047341A1
公开(公告)日：2005-03-03
申请号：US10771942
申请日：2004-02-04
申请人： Yong-Deok Kim , Jun-Ho Koh , Chan-Yul Kim , Yun-Je Oh
发明人： Yong-Deok Kim , Jun-Ho Koh , Chan-Yul Kim , Yun-Je Oh
IPC分类号： H04N7/12 , H04L12/28
CPC分类号： H04N21/23611
摘要： Disclosed is a device for filtering out a null packet in a data stream for example an MPEG-2 TS (Transport Stream) to avoid bandwidth waste when it is transmitted to a backbone network. The device includes a plurality of receiving interfaces, a filter unit, and a controller. The receiving interfaces receive parallel data, such as DVB-ASI (Digital Video Broadcasting-Asynchronous Serial Interface) inputs as channel-by-channel MPEG-2 data. The filter unit counts the respective numbers of data packets and non-data packets of the data input from the receiving interfaces and filters a null packet in the data. A network transmission unit transmits the filtered data to a backbone network. The controller calculates a bit rate based on both of the count numbers received from the filter unit.
摘要翻译：公开了一种用于过滤出例如MPEG-2TS（传输流）的数据流中的零分组的装置，以避免在传输到骨干网络时的带宽浪费。该装置包括多个接收接口，滤波器单元和控制器。接收接口接收并行数据，例如作为逐个通道MPEG-2数据的DVB-ASI（数字视频广播 - 异步串行接口）输入。滤波器单元对从接收接口输入的数据的数据分组和非数据分组的数量进行计数，并对数据中的零分组进行过滤。网络传输单元将过滤的数据发送到骨干网络。控制器基于从滤波器单元接收的两个计数值计算比特率。

22. 发明授权

US07693077B2 Method for estimating available bandwidth of network 有权
标题翻译：估计网络可用带宽的方法
公开(公告)号：US07693077B2
公开(公告)日：2010-04-06
申请号：US11147640
申请日：2005-06-08
申请人： Chan-Yul Kim , Jun-Ho Koh , Jong-Kwon Kim
发明人： Chan-Yul Kim , Jun-Ho Koh , Jong-Kwon Kim
IPC分类号： H04B7/216
CPC分类号： H04L1/24 , H04L1/0002
摘要： Disclosed is a method for estimating an available bandwidth of a network. A plurality of periodic time-stamp packets are transmitted to a receiving-party communication apparatus, which is connected to the network, through the network at a currently-set test transmission rate, and then a changing tendency of transmission delay time differences between the time-stamp packets is checked on the basis of reception times at which the receiving-party communication apparatus have received the respective time-stamp packets. When the transmission delay time differences are located outside a stable range and show a tendency to increase, the test transmission rate is set to a decreased value and the time-stamp packets are repeatedly transmitted at the decreased rate and when the transmission delay time differences are located outside the stable range and show a tendency to decrease, the test transmission rate is set to be an increased value and the time-stamp packets are repeatedly transmitted at the increased rate. A test transmission rate is determined as the available bandwidth when the transmission delay time differences are within the stable range.
摘要翻译：公开了一种用于估计网络的可用带宽的方法。多个周期性时间戳分组通过网络以当前设置的测试传输速率被发送到连接到网络的接收方通信设备，然后是时间间隔之间的传输延迟时间差的变化趋势基于接收方通信装置已经接收到各个时间戳分组的接收时间来检查振幅分组。当传输延迟时间差位于稳定范围之外并且显示出增加的趋势时，将测试传输速率设置为减小的值，并且以降低的速率重复发送时间戳分组，并且当传输延迟时间差为位于稳定范围之外并且显示出降低的趋势，将测试传输速率设置为增加的值，并且以增加的速率重复发送时间戳分组。当传输延迟时间差在稳定范围内时，测试传输速率被确定为可用带宽。

23. 发明申请

US20050141623A1 Transport stream transmission apparatus 审中-公开
标题翻译：传输流传输装置
公开(公告)号：US20050141623A1
公开(公告)日：2005-06-30
申请号：US10862610
申请日：2004-06-07
申请人： Jae-Hun Cho , Sang-Ho Kim , Chan-Yul Kim , Jun-Ho Koh , Yun-Je Oh
发明人： Jae-Hun Cho , Sang-Ho Kim , Chan-Yul Kim , Jun-Ho Koh , Yun-Je Oh
IPC分类号： H04L29/10 , H04N7/12 , H04N7/24
CPC分类号： H04L12/413 , H04L65/607 , H04N21/23608 , H04N21/4344 , H04N21/43632
摘要： Disclosed is a transport stream transmission apparatus, for example an MPEG Motion Picture Experts Group)—transport stream transmission apparatus. The transmission apparatus comprising a transmitter including a first media independent interface to generate a data stream, the data stream having a preamble and at least one transport stream, and a first physical layer device to receive a data frame from the first media independent interface, a back plane board to receive the data frame from the transmitter, and enable distribution of the received data frame to individual subscribers, and a second media independent interface to receive at least one transport stream from the second physical layer device, and enable individual subscribers to received transport stream, wherein the second media independent interface includes a second physical layer device to identify a preamble of the data frame received from the back plane board, perform a clock recovery operation, and generate at least one transport stream of the data frame.
摘要翻译：公开了传输流传输装置，例如MPEG运动图像专家组） - 传输流传输装置。传输设备包括发射机，其包括用于生成数据流的第一媒体独立接口，所述数据流具有前导码和至少一个传输流，以及第一物理层设备，用于从所述第一媒体独立接口接收数据帧; 背板接收来自发射机的数据帧，并且使接收到的数据帧能够分配给各个用户;以及第二媒体独立接口，用于从第二物理层设备接收至少一个传输流，并使各个用户能够接收传输流，其中所述第二媒体独立接口包括第二物理层设备，以识别从所述背板接收的数据帧的前同步码，执行时钟恢复操作，并且生成所述数据帧的至少一个传输流。

24. 发明授权

US07457541B2 System for integrating broadcasting and communication technologies while ensuring qualities of services 有权
标题翻译：整合广播和通信技术同时确保服务质量的系统
公开(公告)号：US07457541B2
公开(公告)日：2008-11-25
申请号：US10645188
申请日：2003-08-21
申请人： Jun-Ho Koh , Yun-Je Oh , Chan-Yul Kim , Seung-Jin Lee
发明人： Jun-Ho Koh , Yun-Je Oh , Chan-Yul Kim , Seung-Jin Lee
IPC分类号： H04B10/00
CPC分类号： H04H20/69 , H04J14/02 , H04J14/08
摘要： A system for integrating broadcast and communication technologies includes an optical-line terminal (OLT), a optical-network unit (ONU) and a user gateway, wherein a broadcast signal is processed on the basis of time division multiplexing (TDM) such that the quality of a broadcast service can be ensured. The ONU separates the optical signal transmitted from the OLT into the broadcast signal and the communication signal, processes upstream information transmitted from a user, and optically transmits the broadcast signal and the communication signal selected on a user-by-user basis, on the basis of a time slot. The user gateway opto-electrically converts a time slot-based optical signal transmitted from the ONU, separates the time slot-based optical signal into individual signals, distributes the individual signals on a service-by-service basis, and optically transmits the upstream information from the user to the ONU.
摘要翻译：用于集成广播和通信技术的系统包括光线路终端（OLT），光网络单元（ONU）和用户网关，其中基于时分复用（TDM）处理广播信号，使得可以确保广播业务的质量。 ONU将从OLT发送的光信号分离成广播信号，并且通信信号处理从用户发送的上行信息，并且基于用户在用户的基础上光学地发送广播信号和通信信号的时间段用户网关光电转换从ONU发送的基于时隙的光信号，将基于时隙的光信号分离成各自的信号，在逐个服务的基础上分配各个信号，并光学地发送上行信息从用户到ONU。

25. 发明授权

US07203240B2 Method of recovering clock signal using user clock code in TDM digital video signal and transmitting/receiving apparatus used for the method 有权
标题翻译：使用TDM数字视频信号中的用户时钟码和用于该方法的发送/接收装置恢复时钟信号的方法
公开(公告)号：US07203240B2
公开(公告)日：2007-04-10
申请号：US10651745
申请日：2003-08-29
申请人： Chan-Yul Kim , Jun-Ho Koh
发明人： Chan-Yul Kim , Jun-Ho Koh
IPC分类号： H04N7/12 , H04B7/212
CPC分类号： H04L7/046 , H04N21/4305
摘要： A clock recovery method for a TDM digital video signal and a transmitting/receiving apparatus for the clock recovery method are disclosed. A transmitter inserts a user clock code containing a predetermined number of points into the digital video signal during TDM processing and transmits the digital video signal. A receiver receives the TDM digital video signal and detects the user clock code from the TDM digital video signal. It counts a reference clock signal and recovers a transmission clock signal in an LMS algorithm using the user clock code and the count value.
摘要翻译：公开了用于TDM数字视频信号的时钟恢复方法和用于时钟恢复方法的发送/接收装置。在TDM处理期间，发射机将包含预定数量的点的用户时钟码插入到数字视频信号中，并发送数字视频信号。接收机接收TDM数字视频信号，并从TDM数字视频信号中检测用户时钟码。它计数参考时钟信号，并使用用户时钟码和计数值在LMS算法中恢复传输时钟信号。

26. 发明申请

US20060168323A1 Transcoding apparatus and method for distributed multimedia transmission network provided with transcoder 审中-公开
标题翻译：具有代码转换器的分布式多媒体传输网络的转码装置和方法
公开(公告)号：US20060168323A1
公开(公告)日：2006-07-27
申请号：US11179855
申请日：2005-07-12
申请人： Chan-Yul Kim , Sung-Jin Park , Chang-Sup Shim , Yun-Je Oh , Jun-Ho Koh
发明人： Chan-Yul Kim , Sung-Jin Park , Chang-Sup Shim , Yun-Je Oh , Jun-Ho Koh
IPC分类号： G06F15/173
CPC分类号： H04L29/06027 , H04L65/605 , H04L65/607
摘要： Disclosed is a transcoding method and apparatus for a mobile communication system provided with a transcoder. The transcoding method includes receiving a request for media content and codec information required for the requested media content, receiving the requested media content from a media content server and determining whether the received codec information exists, transformatting a format of the received media content by a codec of the codec information if the received codec information exists, searching the codec list and installing the codec information and transformatting the format of the received media content using the installed codec, determining whether a transmission bandwidth through which the transformatted media content are transmitted is smaller than a bandwidth of the transformatting codec, transrating the format of the media content by a codec suitable for the transmission bandwidth if the transmission bandwidth is smaller than the bandwidth of the transformatting codec, and transmitting the transrated media content.
摘要翻译：公开了一种具有代码转换器的移动通信系统的代码转换方法和装置。代码转换方法包括接收对所请求的媒体内容所需的媒体内容和编解码器信息的请求，从媒体内容服务器接收所请求的媒体内容，并确定是否存在所接收的编解码器信息，通过编解码器转换所接收的媒体内容的格式如果接收到的编解码信息存在，搜索编解码器列表并安装编解码器信息并使用安装的编解码器对接收到的媒体内容的格式进行变换，确定发送转换的媒体内容的传输带宽是否小于变换编解码器的带宽，如果传输带宽小于转换编解码器的带宽，则通过适用于传输带宽的编解码器来转换媒体内容的格式，以及传输转换的媒体内容。

27. 发明申请

US20050013611A1 Image data processing apparatus in optical subscriber network 审中-公开
标题翻译：光用户网络中的图像数据处理装置
公开(公告)号：US20050013611A1
公开(公告)日：2005-01-20
申请号：US10763985
申请日：2004-01-23
申请人： Chang-Hyun Lee , Chan-Yul Kim , Sang-Ho Kim , Jun-Ho Koh
发明人： Chang-Hyun Lee , Chan-Yul Kim , Sang-Ho Kim , Jun-Ho Koh
IPC分类号： H04L12/28 , H04J3/16 , H04J14/00
CPC分类号： H04J3/1617
摘要： An image data transmission apparatus in an optical subscriber network is disclosed, which comprises: one optical line termination for receiving MPTS data from an outside, packetizing the received MPTS data into HDLC packets, and transmitting the HDLC packets as optical signals; and a plurality of ONUs connected to the OLT, the ONU receiving the optical signal transmitted from the OLT, converting the optical signal into an electrical signal, extracting MPTS data from the converted HDLC packet, and switching the MPTS data to each subscriber. The image data transmission apparatus processes HDLC-based MPTS data, increases degree of integration of data, and therefore enables the optical subscriber network to include more channels.
摘要翻译：公开了一种光用户网络中的图像数据传输装置，包括：一个光线路终端，用于从外部接收MPTS数据，将接收到的MPTS数据分组成HDLC分组，并将HDLC分组作为光信号发送; 以及连接到OLT的多个ONU，ONU接收从OLT发送的光信号，将光信号转换成电信号，从转换的HDLC分组中提取MPTS数据，并将MPTS数据切换到每个用户。图像数据发送装置处理基于HDLC的MPTS数据，增加数据的集成度，因此使得光用户网络能够包括更多的信道。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式