公开(公告)号：US09438379B2

公开(公告)日：2016-09-06

申请号：US14447268

申请日：2014-07-30

申请人： Hitachi Information & Telecommunication Engineering, Ltd.

发明人： Asako Sakashita ,  Suzuka Morotomi ,  Takuro Kaneko ,  Naoya Kumada ,  Yukio Yasumoto ,  Yoshihiko Yagi

IPC分类号： H04L12/28 ,  H04L1/00 ,  H04L12/721 ,  H04L12/939 ,  H04L1/20 ,  H04N21/242 ,  H04N21/43 ,  H04N21/647

CPC分类号： H04L1/0083 ,  H04L1/201 ,  H04L45/70 ,  H04L49/552 ,  H04N21/242 ,  H04N21/4305 ,  H04N21/64784

摘要： Disclosed is a communication technology in which the effect of packet loss can be easily reduced to the extent that it can be ignored, even on networks where packet loss can easily occur. Specifically, a communication device is disclosed that includes a packet loss determination unit that determines whether a packet that transmits image information has been lost, and an interpolated packet transmission unit that transmits an interpolated packet when a packet that transmits image information has been lost.

摘要翻译： 公开了一种通信技术，其中分组丢失的效果可以容易地降低到可以被忽略的程度，即使在容易发生分组丢失的网络上也是如此。 具体地，公开了一种通信装置，其包括确定发送图像信息的分组是否已经丢失的分组丢失确定单元，以及当发送图像信息的分组已经丢失时发送内插分组的内插分组发送单元。

公开(公告)号：US09402092B2

公开(公告)日：2016-07-26

申请号：US14317181

申请日：2014-06-27

申请人： Hitachi Information & Telecommunication Engineering, Ltd.

发明人： Suzuka Morotomi ,  Takuro Kaneko ,  Naoya Kumada ,  Yukio Yasumoto ,  Yoshihiko Yagi

IPC分类号： H04N21/236 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/8547

CPC分类号： H04N21/242 ,  H04N21/23605 ,  H04N21/2383 ,  H04N21/8547

摘要： Task: To provide communication technology in which clock synchronization accuracy can be easily maintained, even on networks where packets can be easily lost.Resolution Means: A communication device, comprising: a transmission unit that includes a flag processing unit that, upon receipt of one or a plurality of MPEG-2 TS packets, applies flag information to the packets at a predetermined interval in the forward reproduction direction of the packets, and a time stamp application unit that generates MPEG-2 TTS packets by applying a time stamp value calculated using a GPS clock to each of the one or a plurality of MPEG-2 TS packets, including the MPEG-2 TS packets having the flag information applied by the flag processing unit, and transmits the MPEG-2 TTS packets to a transmission path.

摘要翻译： 任务：提供可以容易地维护时钟同步精度的通信技术，即使在容易丢失数据包的网络上也是如此。 解决方案：一种通信设备，包括：发送单元，其包括标志处理单元，所述标志处理单元在接收到一个或多个MPEG-2TS分组时，在所述分组的正向再现方向上以预定间隔向所述分组施加标志信息 所述分组和时间戳应用单元，其通过将使用GPS时钟计算的时间戳值应用于所述一个或多个MPEG-2TS分组中的每一个，生成MPEG-2TTS分组，所述MPEG分组包括具有 由标志处理单元应用的标志信息，并将MPEG-2TTS分组发送到传输路径。