公开(公告)号：WO2005034520A1

公开(公告)日：2005-04-14

申请号：PCT/JP2004/013567

申请日：2004-09-10

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  TAKEDA, Hideyuki ,  NADAMOTO, Yuji

Inventor： TAKEDA, Hideyuki ,  NADAMOTO, Yuji

IPC: H04N7/62

CPC classification number: H04N21/2368 ,  H04L7/0008 ,  H04N21/4305 ,  H04N21/4341 ,  H04N21/44209

Abstract: A digital signal receiving system is provided for establishing high-speed clock resynchronization even if abnormality such as a poor radio wave receiving condition takes place. The system is constructed such that recipient STC data and PCR data are acquired in response to detection of a variation in frequency of a clock signal, and these data are stored as variation information data. The receiver 10 sets the PCR data in the R_STC counter 142, and sends the variation information data to the host device 20. The host device 20, in turn, sets a computation result obtained based on host STC data and the variation information data in the H_STC counter 242.

Abstract translation: 即使发生诸如差的无线电波接收状况的异常，也提供了一种用于建立高速时钟再同步的数字信号接收系统。 该系统被构造为使得响应于检测到时钟信号的频率变化而获取接收者STC数据和PCR数据，并且这些数据被存储为变化信息数据。 接收机10在R_STC计数器142中设置PCR数据，并将变化信息数据发送到主机设备20.主机设备20又将基于主机STC数据获得的计算结果和变化信息数据设置在 H_STC计数器242。

公开(公告)号：WO03063464A8

公开(公告)日：2004-06-10

申请号：PCT/US0301937

申请日：2003-01-22

Applicant: BROADCOM CORP

Inventor： CHEN SHERMAN XUEMIN ,  MACINNIS ALEXANDER G

IPC: G06T9/00 ,  H04N5/44 ,  H04N7/01 ,  H04N7/26 ,  H04N7/62

CPC classification number: H04N21/23608 ,  H04N7/0112 ,  H04N7/012 ,  H04N21/4307

Abstract: Systems and methods that use differential values to represent decoding and presentation times (64) of pictures are provided. Optionally, some of the systems or the methods may use an entropy coding method (48) such as, for example, the Universal Variable Length Code (UVLC) for the differential time stamps.

Abstract translation: 提供了使用差分值来表示图像的解码和呈现时间（64）的系统和方法。 可选地，一些系统或方法可以使用熵编码方法（48），例如用于差分时间戳的通用可变长度码（UVLC）。

公开(公告)号：WO02054284A1

公开(公告)日：2002-07-11

申请号：PCT/NO2002/000002

申请日：2002-01-04

IPC: H04L29/06 ,  H04L29/08 ,  H04N7/24 ,  G06F17/30 ,  H04L12/56 ,  H04N7/62

CPC classification number: H04L65/607 ,  H04L29/06027 ,  H04L65/4084 ,  H04L65/80 ,  H04L67/02 ,  H04N21/234354 ,  H04N21/234381 ,  H04N21/23439 ,  H04N21/2381 ,  H04N21/2402 ,  H04N21/6373 ,  H04N21/64322

Abstract: In a method for transmission of video information between HTTP servers and clients in a shared network resource, particularly Internet, the video information is stored as a video file consisting of packet-divided video streams compression-coded with average bit rates t(c) which cover the clients' expected channel bit rates sigma . Each packet and the video file are supplied with a header containing information for realizing a bandwidth-scalable video transmission over a suitable version of HTTP. During transmission switching between the video streams takes place on the basis pf an estimation of the channel bit rate sigma and the information in the packet header, such that the bit rate t(c) is adapted to the client's actual channel bit rate sigma . In a method for client-executed search and retrieval of video information in a shared network resource, particularly searching of a video frame Fx in a packet-divided video stream, the packets in a video stream are divipacket packet in each group. On basis of given search criteria and search-specific information in the packet headers the packet with the video frame Fx is found, such that a pseudo-random search and retrieval are realized with the use of a suitable version of HTTP as transport protocol.

Abstract translation: 在用于在共享网络资源（特别是因特网）中的HTTP服务器和客户端之间传输视频信息的方法中，视频信息被存储为由分组视频流组成的视频文件，压缩编码以平均比特率t（c） 覆盖客户预期的通道位速率sigma。 每个分组和视频文件被提供有包含用于通过适当的HTTP版本实现带宽可伸缩视频传输的信息的报头。 在视频流之间的传输切换期间，基于信道比特速率sigma的估计和分组报头中的信息进行发送，使得比特率t（c）适应于客户端的实际信道比特率sigma。 在用于在共享网络资源中客户端执行搜索和检索视频信息的方法中，特别是在分组视频流中搜索视频帧Fx的方法中，视频流中的分组是每组中的分组分组。 根据给定的搜索条件和分组报头中的搜索专用信息，找到具有视频帧Fx的分组，使得利用适当版本的HTTP作为传输协议来实现伪随机搜索和检索。

公开(公告)号：WO02017568A1

公开(公告)日：2002-02-28

申请号：PCT/JP2001/007158

申请日：2001-08-21

IPC: H04N5/92 ,  G11B20/12 ,  H04L12/28 ,  H04L12/40 ,  H04L12/64 ,  H04N5/00 ,  H04N7/24 ,  H04N7/62 ,  H04N19/00 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/70 ,  G11B20/10

CPC classification number: H04L12/40058 ,  G11B20/12 ,  H04L12/40071 ,  H04N21/4305 ,  H04N21/4344 ,  H04N21/43622 ,  H04N21/43632

Abstract: A data stream processing device for recording a data stream inputted through a network. An MPEG2 partial TS and information about the transmission line bandwidth both recorded on a recorded medium are read out. According to the read out information, the bandwidth of an IEEE1394 serial data bas is ensured. The packet of the read out MPEGA2 partial TS is buffered. A time stamp is created according to the PCR decoded during the buffering. Thereafter, a header containing the time stamp is added to the MPEG2-TS packet to create a source packet and sent to another electronic device by using a transmission bandwidth of the IEEE1394 serial data bas where a source packet is ensured.

Abstract translation: 一种用于记录通过网络输入的数据流的数据流处理装置。 读出MPEG2部分TS和记录在记录介质上的传输线带宽的信息。 根据读出的信息，确保了IEEE1394串行数据库的带宽。 读出的MPEGA2部分TS的分组被缓冲。 根据在缓冲期间解码的PCR创建时间戳。 此后，将包含时间标记的报头添加到MPEG2-TS分组中以创建源分组，并通过使用确保源分组的IEEE1394串行数据库的传输带宽将其发送到另一电子设备。

公开(公告)号：WO01052554A1

公开(公告)日：2001-07-19

申请号：PCT/EP2001/000110

申请日：2001-01-05

IPC: H04N5/92 ,  G11B27/00 ,  G11B27/034 ,  G11B27/10 ,  G11B27/28 ,  G11B27/30 ,  H04J3/00 ,  H04N5/00 ,  H04N5/783 ,  H04N5/85 ,  H04N7/24 ,  H04N9/804 ,  H04N7/62

CPC classification number: G11B27/005 ,  G11B27/034 ,  G11B27/105 ,  G11B27/28 ,  G11B27/3027 ,  G11B2220/2562 ,  H04N5/783 ,  H04N5/85 ,  H04N9/8042 ,  H04N21/242 ,  H04N21/4147 ,  H04N21/4302 ,  H04N21/4305 ,  H04N21/4334 ,  H04N21/4344 ,  H04N21/8455

Abstract: Method to enable a local system time clock counter (STC) of a receiving recording device to lock to program clock reference (PCR) information comprised in a received real time sequence of information signal packets, such as MPEG2 Transport Stream packets. The method comprising determining the number of cycles between arrival of the first information signal packet and the arrival of the information signal packet comprising the first Program Clock Reference (PCR) information. This information is stored as an attribute of the stored sequence.

Abstract translation: 使接收记录装置的本地系统时钟计数器（STC）能够锁定到接收到的信息信号分组例如MPEG2传输流分组的实时序列中的程序时钟参考（PCR）信息的方法。 该方法包括确定第一信息信息分组到达之间的周期数与包括第一程序时钟参考（PCR）信息的信息信号分组的到达。 该信息作为存储序列的属性存储。

公开(公告)号：WO00042753A1

公开(公告)日：2000-07-20

申请号：PCT/EP1999/000179

申请日：1999-01-14

IPC: H04J3/06 ,  H04L12/24 ,  H04L12/26 ,  H04N7/24 ,  H04L29/06 ,  H04L12/56 ,  H04L12/64 ,  H04N7/62

CPC classification number: H04J3/0632 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/0864 ,  H04L43/087 ,  H04N21/6332 ,  H04N21/6377 ,  H04N21/654 ,  H04N21/658

Abstract: The present invention discloses a system which comprises two endpoints (1, 2) communicating with each other by means of a packet-switched network. The endpoints (1, 2) use adaptation algorithms for estimating jitter from packet arrival times and for modifying silence period lengths according to the latest estimate. According to the present invention, the endpoints (1, 2) are able to measure a response time ( rho ) at a certain point of time and use it as a parameter in the adaptation algorithms.

Abstract translation: 本发明公开了一种包括通过分组交换网络彼此通信的两个端点（1,2）的系统。 端点（1,2）使用自适应算法来估计来自分组到达时间的抖动并根据最新估计来修改静默周期长度。 根据本发明，端点（1,2）能够在某个时间点测量响应时间（rho），并将其用作自适应算法中的参数。

公开(公告)号：WO00038431A1

公开(公告)日：2000-06-29

申请号：PCT/JP1999/007140

申请日：1999-12-20

IPC: H04N19/132 ,  H04N7/62 ,  H04N19/00 ,  H04N19/166 ,  H04N19/177 ,  H04N19/31 ,  H04N19/423 ,  H04N19/577 ,  H04N19/70 ,  H04N7/26

CPC classification number: H04N21/242

Abstract: A time stamping apparatus uses modulo time base and time increment resolution for efficiently encoding a local time base for different video/audio sources embedded in the compressed data. The local time base is mainly encoded in two parts: a modulo time base that indicates the specific interval in the reference time base; and a time base increment relative to the reference time. Two forms of time base increment are used to allow for the possibility of different encoding order and displaying order. A resolution for time base increment is introduced here to allow video/audio sources of different frame rates to be encoded and multiplexed into one bitstream. Also, bit saving is also obtained for some of the video frame rates. The parameter of time base increment resolution can be placed in the header of group of video object plane.

Abstract translation: 时间戳装置使用模数时基和时间增量分辨率来有效地编码嵌入在压缩数据中的不同视频/音频源的本地时基。 本地时基主要由两部分组成：模数时基，表示参考时基的特定间隔; 和相对于参考时间的时基增量。 使用两种形式的时基增量来允许不同的编码顺序和显示顺序的可能性。 此处介绍了时基增量的分辨率，以允许将不同帧速率的视频/音频源编码并复用到一个比特流中。 此外，对于一些视频帧速率也获得比特保存。 时基增量分辨率的参数可以放置在视频对象平面组的头部。

公开(公告)号：WO99000986A1

公开(公告)日：1999-01-07

申请号：PCT/US1998/008304

申请日：1998-04-21

IPC: H04N5/00 ,  H04N7/173 ,  H04N7/46 ,  H04N7/50 ,  H04N7/26 ,  H04N7/52 ,  H04N7/56 ,  H04N7/62

CPC classification number: H04N21/6125 ,  H04N7/17336 ,  H04N19/132 ,  H04N19/587 ,  H04N19/61 ,  H04N21/234354 ,  H04N21/234381 ,  H04N21/2402 ,  H04N21/242 ,  H04N21/26241 ,  H04N21/2662 ,  H04N21/472

Abstract: Data is encoded at a variable bitrate (210, 220) and formed into packets (230) having a server time stamp. The server time stamps are constructed so that the streaming of the packets will be substantially constant, not variable, and equal to a desired, bugeted bandwidth, such as one corresponding to fully utilizing a modem link. to schedule the sending of packets, the server (240) uses the server time stamp, rather than, for example, the play-back time stamp. By having the data encoded at a variable bitrate, the otherwise-unused capacity, i.e., the capacity not used by the server, can be used to send packets needed in the future. This is accomplished by the server time stamps scheduling packets for transmission that will not be needed until the future.

Abstract translation: 数据以可变比特率（210,220）编码并形成具有服务器时间戳的分组（230）。 服务器时间戳被构造为使得分组的流传输将基本上是恒定的，不可变的，并且等于所需的被错误的带宽，例如对应于完全利用调制解调器链路的带宽。 为了调度分组的发送，服务器（240）使用服务器时间戳，而不是例如播放时间戳。 通过使数据以可变比特率编码，否则未使用的容量，即服务器未使用的容量，可用于发送将来需要的分组。 这是通过服务器时间戳调度数据包来实现的，直到将来才能进行传输。

公开(公告)号：WO9617491A3

公开(公告)日：1996-08-29

申请号：PCT/IB9501075

申请日：1995-11-29

Applicant: PHILIPS ELECTRONICS NV ,  PHILIPS NORDEN AB

Inventor： BLANCHARD SIMON

IPC: H04N5/92 ,  G06T9/00 ,  G11B27/031 ,  H04N5/937 ,  H04N7/24 ,  H04N7/26 ,  H04N7/50 ,  H04Q11/04 ,  H04N7/62

CPC classification number: H04N21/8541 ,  G11B27/031 ,  H04N19/115 ,  H04N19/146 ,  H04N19/152 ,  H04N19/162 ,  H04N19/172 ,  H04N19/179 ,  H04N19/61 ,  H04N21/23406

Abstract: A method and apparatus are provided for encoding of digital video signals in the form of video clips (A, B) to enable them to be seamlessly joined without requiring reset of a decoder to a starting state. The system uses an encoder having a coding stage and an encoder buffer, and comprises successively encoding the pictures of a clip according to a predetermined coding scheme (suitably according to MPEG standards), reading the encoded pictures into the buffer, and subsequently reading the encoded clip out of the buffer at a substantially constant bit rate. To enable simple joining of the clips, a predetermined encoder buffer occupancy (Blc) is specified with a controllably varied target number of bits being used to encode a picture. The targetin produces an encoder buffer occupancy substantially equal to the predetermined buffer occupancy (Blc) at the moment the last picture of the segment has been read into the buffer. Particularly for the technique are in interactive video systems where the user can affect a narrative flow without having discontinuities in the presentation of that narrative.

公开(公告)号：WO2011073468A1

公开(公告)日：2011-06-23

申请号：PCT/ES2010/000390

申请日：2010-09-23

Applicant: UNIVERSIDAD POLITÉCNICA DE MADRID ,  MARTÍNEZ BARBERO, Jesús

Inventor： MARTÍNEZ BARBERO, Jesús

IPC: H04N5/04 ,  H04N7/62 ,  H04N7/52

CPC classification number: H04N21/8547 ,  H04N21/2368 ,  H04N21/4307 ,  H04N21/4341

Abstract: Sistema y método de ajuste de retardo audio/vídeo que comprende las siguientes etapas: extraer parámetros característicos de una fuente de audio (3); 5 introducir los parámetros extraídos de la fuente de audio (3) en el video procedente de una fuente de video (1); extraer de la señal de audio, tras el procesado del video, los mismos parámetros extraídos en la primera etapa; obtener de la señal de video, tras el procesado del video, los parámetros de audio introducidos en la segunda etapa; comparar los parámetros de audio extraídos en la tercera etapa y obtenidos en la 10 cuarta; calcular el retardo existente entre los parámetros de audio comparados; almacenar el retardo calculado; y finalmente retardar la señal de audio un valor de retardo configurable en función del retardo calculado y del retardo almacenado procedente de una ejecución anterior del método.

Abstract translation: 本发明涉及一种用于调整音频/视频延迟的系统和方法，包括以下步骤：提取音频源（3）的典型参数; 将从音频源（3）提取的参数添加到来自视频源（1）的视频; 在处理视频之后，从音频信号中提取在第一步骤中提取的相同参数; 在处理视频之后，从视频信号获得在第二步骤中添加的音频参数; 将在第三步骤中提取的音频参数与在第四步骤中获得的音频参数进行比较; 计算比较的音频参数之间的现有延迟; 存储所计算的延迟; 并且最后以延迟值延迟音频信号，所述延迟值可以根据所计算的延迟和从先前执行该方法的存储的延迟来配置。