公开(公告)号：WO02023776A1

公开(公告)日：2002-03-21

申请号：PCT/JP2001/007660

申请日：2001-09-04

IPC: H04N21/44 ,  H04N5/00 ,  H04N5/44 ,  H04N5/50 ,  H04N21/4385 ,  H04J3/00 ,  H04N7/24

CPC classification number: H04N21/434 ,  H04N5/4401 ,  H04N5/50 ,  H04N21/4347

Abstract: An identifier for specifying the channel of a PES packet outputted from a TS decoder is attached to the header of the PES packet by an identifier attaching circuit. PID information corresponding to the identifier is read out of an identifier table by an identifier selecting circuit. The PES packets are stored for each channel in storage areas (CH1 to CHn) of a bank memory designated by a control section with respect to the PID information. The stored packets are decoded for each channel by a decoding circuit.

Abstract translation: 用于指定从TS解码器输出的PES分组的信道的标识符通过标识符附加电路附加到PES分组的报头。 通过标识符选择电路从标识符表中读出与标识符对应的PID信息。 在针对PID信息由控制部指定的存储体存储体的存储区域（CH1〜CHn）中，为每个通道存储PES数据包。 存储的分组由解码电路针对每个信道进行解码。

公开(公告)号：WO02009425A1

公开(公告)日：2002-01-31

申请号：PCT/US2001/023371

申请日：2001-07-25

IPC: H04N7/26 ,  H04N7/08 ,  H04N7/081 ,  H04N7/24 ,  H04N21/234 ,  H04N21/236 ,  H04N21/2389 ,  H04N21/262 ,  H04N21/4385 ,  H04N21/44 ,  H04N21/81 ,  H04N7/10 ,  H04N7/025

CPC classification number: H04N21/2625 ,  H04N21/23406 ,  H04N21/23424 ,  H04N21/23608 ,  H04N21/2389 ,  H04N21/4385 ,  H04N21/44004 ,  H04N21/44016 ,  H04N21/812

Abstract: A method for seamlessly splicing a local commercial segment into an existing network time slot, without decoder buffer overflow or underflow. The vbv_delay of the commercial segment is manipulated (e.g., for a minimum delay or a maximum delay). The pictures from the commercial segment are output for at least a portion of the associated network time slot duration. A determination is made regarding the number of pictures remaining in a stored portion of the incoming network feed or the commercial segment and the output rate is adjusted as required. The vbv_delay of the stored network feed or the vbv_delay of the local commercial segment is adjusted to match the vbv_delay of the incoming network feed.

Abstract translation: 一种将本地商业广告段无缝拼接成现有网络时隙的方法，无需解码器缓冲区溢出或下溢。 操纵商业片段的vbv_delay（例如，对于最小延迟或最大延迟）。 输出商业片段的图片至少部分相关的网络时隙持续时间。 确定进入网络馈送或广告段的存储部分中剩余的图像数量，并且根据需要调整输出速率。 存储的网络馈送的vbv_delay或本地商业广告段的vbv_delay被调整为匹配传入网络馈送的vbv_delay。

公开(公告)号：WO0128147A3

公开(公告)日：2001-08-30

申请号：PCT/US0028010

申请日：2000-10-09

Applicant: CONEXANT SYSTEMS INC

Inventor： BERNATH BRETT ALAN ,  BROOKS JOHN MILFORD ,  MEHTA MANOJ ,  GOLDENBERG YOAV PESACH

IPC: H04N21/2389 ,  H04N21/4385 ,  H04N21/8547 ,  H04N7/173

CPC classification number: H04N21/8547 ,  H04N21/2389 ,  H04N21/4385

Abstract: A system for synchronizing the upstream burst transmission in a cable system to a time specified by the cable head end is disclosed. The system includes a free running counter within a cable modem (CM) or network interface unit (NIU), along with logic to capture the value of this free running counter at the time a frame of MPEG-2 SYNC data arrives, to create a time tag stored in memory. A computer within the cable modem or network interface unit has access to the time tags in memory and the contents of a time synchronization message from the head end, also stored in memory. The computer contains a program to calculate the value of the local counter that corresponds to a time to transmit commanded by the cable system head end. The system includes logic within the CM or NIU to initiate an upstream burst transmission when the value of the local counter becomes equal to a calculated value, thus causing the cable modem to initiate its upstream burst transmission precisely at the time commanded by the head end.

Abstract translation: 公开了一种用于使电缆系统中的上游突发传输与电缆头端所指定的时间同步的系统。 该系统包括在电缆调制解调器（CM）或网络接口单元（NIU）内的自由运行计数器，以及在MPEG-2 SYNC数据帧到达时捕获该自由运行计数器的值的逻辑，以创建 时间标签存储在内存中。 有线调制解调器或网络接口单元内的计算机可以访问存储器中的时间标签以及来自头端的同时存储在存储器中的时间同步消息的内容。 计算机包含一个程序来计算本地计数器的值，该计数器对应于由有线系统前端发送的时间。 当本地计数器的值等于计算值时，系统包括CM或NIU内的逻辑以发起上行突发传输，从而使得线缆调制解调器精确地在头端命令的时间开始其上行突发传输。