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    • 2. 发明申请
    • SYSTEM FOR MODIFYING THE TIME-BASE OF A VIDEO SIGNAL
    • 修改视频信号时基的系统
    • US20110110642A1
    • 2011-05-12
    • US13009903
    • 2011-01-20
    • Eduard Willem SalomonsAlbert Maria Arnold Rijckaert
    • Eduard Willem SalomonsAlbert Maria Arnold Rijckaert
    • H04N5/95
    • H04N21/4344H04N21/4147H04N21/4305H04N21/4334H04N21/43632
    • A storage device 500 includes an input 405 for receiving a digital video stream complying with a predetermined video encoding standard via a digital video communication system. The stream includes a sequence of digital video frames, a sequence of program clock reference stamps (PCR) and a sequence of video presentation time stamps (PTS). A time-base modifier 510 replaces the PTS's by respective modified video presentation time stamps (M-PTS) based on a constant predetermined frame time between successive presentation time stamps and replaces the PCR's by respective modified program clock reference stamps (M-PCR) by scaling the PCR's using a scaling factor that depends on a ratio of an expected time between a video presentation time stamp j and a preceding video presentation time stamp j-n and an actual time between the video presentation time stamp j and the preceding video presentation time stamp j-n, where j≧n>0. The expected time is n times the predetermined frame time.
    • 存储装置500包括用于经由数字视频通信系统接收符合预定视频编码标准的数字视频流的输入405。 流包括一系列数字视频帧,一系列程序时钟参考标记(PCR)和一系列的视频呈现时间戳(PTS)。 时基修饰符510基于连续呈现时间戳之间的恒定预定帧时间,通过相应修改的视频呈现时间戳(M-PTS)来替换PTS,并且通过相应的修改的程序时钟参考标记(M-PCR)由PCR替换PCR 使用取决于视频呈现时间戳j和之前的视频呈现时间戳jn之间的期望时间的比率的比例因子以及视频呈现时间戳j和之前的视频呈现时间戳jn之间的实际时间来缩放PCR ,其中j≥n> 0。 预期时间是预定帧时间的n倍。
    • 3. 发明授权
    • System for modifying the time-base of a video signal
    • 用于修改视频信号时基的系统
    • US07899302B2
    • 2011-03-01
    • US10538611
    • 2003-12-15
    • Eduard Willem SalomonsAlbert Maria Arnold Rijckaert
    • Eduard Willem SalomonsAlbert Maria Arnold Rijckaert
    • H04N5/91H04N5/93
    • H04N21/4344H04N21/4147H04N21/4305H04N21/4334H04N21/43632
    • A storage device 500 includes an input 405 for receiving a digital video stream complying with a predetermined video encoding standard via a digital video communication system. The stream includes a sequence of digital video frames, a sequence of program clock reference stamps (PCR) and a sequence of video presentation time stamps (PTS). A time-base modifier 510 replaces the PTS's by respective modified video presentation time stamps (M-PTS) based on a constant predetermined frame time between successive presentation time stamps and replaces the PCR's by respective modified program clock reference stamps (M-PCR) by scaling the PCR's using a scaling factor that depends on a ratio of an expected time between a video presentation time stamp j and a preceding video presentation time stamp j−n and an actual time between the video presentation time stamp j and the preceding video presentation time stamp j−n, where j≧n>0. The expected time is n times the predetermined frame time.
    • 存储装置500包括用于经由数字视频通信系统接收符合预定视频编码标准的数字视频流的输入405。 流包括一系列数字视频帧,一系列程序时钟参考标记(PCR)和一系列的视频呈现时间戳(PTS)。 时基修饰符510基于连续呈现时间戳之间的恒定预定帧时间,通过相应修改的视频呈现时间戳(M-PTS)来替换PTS,并通过相应的修改的程序时钟参考标记(M-PCR)由PCR修改 使用取决于视频呈现时间戳j和之前的视频呈现时间戳j-n之间的期望时间的比率的比例因子以及视频呈现时间戳j和之前的视频呈现时间之间的实际时间来缩放PCR 印章j-n,其中j≥n> 0。 预期时间是预定帧时间的n倍。