Methods and apparatus to test receivers
    1.
    发明授权
    Methods and apparatus to test receivers 有权
    测试接收机的方法和设备

    公开(公告)号:US07817184B1

    公开(公告)日:2010-10-19

    申请号:US11376055

    申请日:2006-03-15

    IPC分类号: H04N17/00

    CPC分类号: H04N17/04

    摘要: Methods of testing receiver video fidelity are disclosed. One example method includes producing a video test signal; coupling the video test signal into an input of the receiver, wherein the video test signal is configured to cause a decoder to output a step function signal upon processing the video test signal; coupling the step function signal to a display rate converter; and measuring signal characteristics of signals provided at a receiver output.

    摘要翻译: 公开了测试接收机视频保真度的方法。 一个示例性方法包括产生视频测试信号; 将视频测试信号耦合到接收机的输入端,其中视频测试信号被配置为使得解码器在处理视频测试信号时输出步进功能信号; 将步进功能信号耦合到显示速率转换器; 并测量在接收机输出端提供的信号的信号特性。

    Method and system for forming a formatted content stream and using a cyclic redundancy check
    3.
    发明授权
    Method and system for forming a formatted content stream and using a cyclic redundancy check 有权
    用于形成格式化内容流并使用循环冗余校验的方法和系统

    公开(公告)号:US09564988B2

    公开(公告)日:2017-02-07

    申请号:US11828605

    申请日:2007-07-26

    IPC分类号: H04L1/00 H04L29/06

    摘要: A communication system includes a content repository storing a content file and a video transport processing system receiving the content file and dividing the content file into a plurality of content file portions, forming a leading data portion, determining a cyclic redundancy check value, forming a trailing data portion with the cyclic redundancy check value therein, forming a content data stream from the leading data portion, the plurality of content file portions and trailing data portion. The system also includes a system communicating the content data stream to a user device.

    摘要翻译: 通信系统包括存储内容文件的内容存储库和接收内容文件的视频传输处理系统,并将内容文件分割成多个内容文件部分,形成前导数据部分,确定循环冗余校验值,形成尾随 具有循环冗余校验值的数据部分,从前导数据部分,多个内容文件部分和尾随数据部分形成内容数据流。 该系统还包括将内容数据流传送到用户设备的系统。

    METHOD AND SYSTEM FOR FORMING A FORMATTED CONTENT STREAM AND USING A CYCLIC REDUNDANCY CHECK
    5.
    发明申请
    METHOD AND SYSTEM FOR FORMING A FORMATTED CONTENT STREAM AND USING A CYCLIC REDUNDANCY CHECK 有权
    形成内容流的方法和系统,并使用循环冗余检查

    公开(公告)号:US20090031189A1

    公开(公告)日:2009-01-29

    申请号:US11828605

    申请日:2007-07-26

    IPC分类号: H03M13/09 G06F11/10

    摘要: A communication system 100 includes a content repository 274 storing a content file and a video transport processing system 223 receiving the content file and dividing the content file into a plurality of content file portions, forming a leading data portion, determining a cyclic redundancy check value, forming a trailing data portion with the cyclic redundancy check value therein, forming a content data stream from the leading data portion, the plurality of content file portions and trailing data portion. The system also includes a system communicating the content data stream to a user device.

    摘要翻译: 通信系统100包括存储内容文件的内容存储库274和接收内容文件的视频传输处理系统223,并将内容文件分割成多个内容文件部分,形成前导数据部分,确定循环冗余校验值, 在其中形成具有循环冗余校验值的拖尾数据部分,从前导数据部分,多个内容文件部分和尾随数据部分形成内容数据流。 该系统还包括将内容数据流传送到用户设备的系统。

    Method and apparatus for transmitting high definition television programming using a digital satellite system transport and MPEG-2 packetized elementary streams (PES)
    8.
    发明授权
    Method and apparatus for transmitting high definition television programming using a digital satellite system transport and MPEG-2 packetized elementary streams (PES) 有权
    使用数字卫星系统传输和MPEG-2分组化基本流(PES)传输高清晰度电视节目的方法和装置

    公开(公告)号:US06323909B1

    公开(公告)日:2001-11-27

    申请号:US09181412

    申请日:1998-10-28

    IPC分类号: H04N9475

    摘要: A system and method for distributing high definition television (HDTV) and standard definition television (SDTV) signals via satellite is disclosed. At the transmission station an MPEG-2 video encoder compresses a video signal and a digital encoder encodes an audio signal. The compressed video and the encoded audio are coupled to PES packetizers, which generate video and audio packetized elementary data streams having PES headers and PES payloads. Within each PES header is a presentation time stamp (PTS), which is representative of the time at which the payload is to be displayed to the user. The packetized elementary data streams are multiplexed together by a transport multiplexer and repacketizer and broadcast to receiver stations, via satellite. The receiver stations receive the PES information and obtain the PTS. A receiver station multiplies the PTS by 300 and compares its local clock reference to that time. When the local clock reference and the PTS are identical, the PES audio and video information is displayed to the user according to the local clock reference.

    摘要翻译: 公开了一种通过卫星分配高分辨率电视(HDTV)和标清电视(SDTV)信号的系统和方法。 在发送站处,MPEG-2视频编码器压缩视频信号,数字编码器对音频信号进行编码。 压缩视频和编码音频耦合到PES打包器,PES分组器产生具有PES头部和PES有效载荷的视频和音频分组的基本数据流。 在每个PES头部内是呈现时间戳(PTS),其表示有效载荷将显示给用户的时间。 分组化的基本数据流由传输多路复用器和解码器复用在一起,并通过卫星广播到接收机站。 接收站接收PES信息并获得PTS。 接收站将PTS乘以300,并将其本地时钟参考值与该时间进行比较。 当本地时钟参考和PTS相同时,PES音频和视频信息根据本地时钟参考显示给用户。

    Audio video timing measurement and synchronization
    9.
    发明申请
    Audio video timing measurement and synchronization 有权
    音频视频定时测量和同步

    公开(公告)号:US20080079851A1

    公开(公告)日:2008-04-03

    申请号:US11529941

    申请日:2006-09-29

    IPC分类号: H04N9/64

    摘要: A method and apparatus for synchronizing audio and video portions of a media program signal is disclosed. In a transmitting embodiment, the method comprises the steps of identifying a video event according to an video event discriminant in the video signal, and inserting a timing signal into the audio signal, and the apparatus comprises a video analysis module for identifying a video event according to an video event discriminant in the video signal, a timing signal generator for generating a timing signal, and a mixer for inserting the timing signal into the audio signal.

    摘要翻译: 公开了一种用于同步媒体节目信号的音频和视频部分的方法和装置。 在发送实施例中,该方法包括以下步骤:根据视频信号中的视频事件判别式识别视频事件,并将定时信号插入到音频信号中,并且该装置包括视频分析模块,用于根据 视频信号中的视频事件判别式,用于产生定时信号的定时信号发生器,以及用于将定时信号插入到音频信号中的混合器。

    System and method for translating MPEG packets which include PCR data into DIRECTV packets which include RTS data
    10.
    发明授权
    System and method for translating MPEG packets which include PCR data into DIRECTV packets which include RTS data 有权
    将包含PCR数据的MPEG数据包转换成包含RTS数据的DIRECTV数据包的系统和方法

    公开(公告)号:US06744789B1

    公开(公告)日:2004-06-01

    申请号:US09669140

    申请日:2000-09-26

    申请人: James A. Michener

    发明人: James A. Michener

    IPC分类号: H04J306

    摘要: A method, apparatus, article of manufacture, and a memory structure for translating an input data packet from an input format to at least one output data packet in an output format. The method comprises the steps of reading a series of data packets in the input format, the data packets including a data type identifier, wherein at least some of the data packets include first time synchronization data and at least some of the data packets include payload data; identifying data packets of interest in the series of data packets according to data type using the data type identifier; identifying data packets from the data packets of interest having time synchronization information; generating second time synchronization information from the first time synchronization information for the data packets having time synchronization information, and generating at least one output data packet in the output data format having the second time synchronization information. In one embodiment, the method further comprises the steps of identifying data packets from the data packets of interest having payload data, and assembling at least one output data packet in the second format having the payload data.

    摘要翻译: 一种用于将输入数据分组从输入格式转换成输出格式的至少一个输出数据分组的方法,装置,制品和存储器结构。 该方法包括以下步骤:读取输入格式的一系列数据分组,数据分组包括数据类型标识符,其中至少一些数据分组包括第一时间同步数据,并且至少一些数据分组包括有效载荷数据 ; 使用数据类型标识符根据数据类型识别所述一系列数据分组中感兴趣的数据分组; 从具有时间同步信息的感兴趣的数据分组识别数据分组; 从具有时间同步信息的数据分组的第一时间同步信息生成第二时间同步信息,并且生成具有第二时间同步信息的输出数据格式的至少一个输出数据分组。 在一个实施例中,该方法还包括以下步骤:从具有有效负载数据的感兴趣的数据分组识别数据分组,以及组装具有有效载荷数据的第二格式的至少一个输出数据分组。