公开(公告)号：US08391688B2

公开(公告)日：2013-03-05

申请号：US13008797

申请日：2011-01-18

申请人： Wenbo Zhang ,  Yongjun Wu ,  Kim-chyan Gan ,  Eric Christoffersen

发明人： Wenbo Zhang ,  Yongjun Wu ,  Kim-chyan Gan ,  Eric Christoffersen

IPC分类号： H04N5/92

CPC分类号： H04N5/783 ,  G11B27/005

摘要： Systems and methods for smooth rewind playback of streamed media are provided. The media includes relatively-encoded frames and independently-encoded frames. The method includes receiving a rewind request indicating a rewind speed for rewind playback of the media, selectively dropping relatively-encoded frame(s) based on a receipt constraint and a decoding constraint to form a subset of the media, and receiving frames of the subset. The method further includes selecting, in a reverse order, a selected group of pictures (GOP) included within the subset, and decoding relatively-encoded frame(s) of the GOP in a forward sequential frame order. The method further includes caching relatively-encoded frame(s) of the GOP in the forward sequential frame order, and when caching, dropping and overwriting relatively-encoded frame(s) of the GOP selectively according to a memory constraint and/or a display constraint. The method further includes displaying relatively-encoded frame(s) of the GOP in a reverse sequential frame order.

摘要翻译： 提供了流媒体平滑回放播放的系统和方法。 媒体包括相对编码的帧和独立编码的帧。 该方法包括：接收指示用于回放媒体的回绕速度的倒带请求，基于接收约束和解码约束选择性地丢弃相对编码的帧以形成媒体的子集，以及接收该子集的帧 。 该方法还包括以相反的顺序选择包括在该子集内的所选择的图像组（GOP），并按照前向顺序帧顺序解码GOP的相对编码的帧。 该方法还包括以前向顺序帧顺序缓存GOP的相对编码的帧，并且当根据存储器约束和/或显示器缓存，丢弃和重写相对编码的GOP的一个或多个GOP时， 约束。 该方法还包括以反向顺序帧顺序显示GOP的相对编码的帧。

公开(公告)号：US20120093489A1

公开(公告)日：2012-04-19

申请号：US13008797

申请日：2011-01-18

申请人： Wenbo Zhang ,  Yongjun Wu ,  Kim-chyan Gan ,  Eric Christoffersen

发明人： Wenbo Zhang ,  Yongjun Wu ,  Kim-chyan Gan ,  Eric Christoffersen

IPC分类号： H04N5/783

CPC分类号： H04N5/783 ,  G11B27/005

摘要： Systems and methods for smooth rewind playback of streamed media are provided. The media includes relatively-encoded frames and independently-encoded frames. The method includes receiving a rewind request indicating a rewind speed for rewind playback of the media, selectively dropping relatively-encoded frame(s) based on a receipt constraint and a decoding constraint to form a subset of the media, and receiving frames of the subset. The method further includes selecting, in a reverse order, a selected group of pictures (GOP) included within the subset, and decoding relatively-encoded frame(s) of the GOP in a forward sequential frame order. The method further includes caching relatively-encoded frame(s) of the GOP in the forward sequential frame order, and when caching, dropping and overwriting relatively-encoded frame(s) of the GOP selectively according to a memory constraint and/or a display constraint. The method further includes displaying relatively-encoded frame(s) of the GOP in a reverse sequential frame order.

摘要翻译： 提供了流媒体平滑回放播放的系统和方法。 媒体包括相对编码的帧和独立编码的帧。 该方法包括：接收指示用于回放媒体的回绕速度的倒带请求，基于接收约束和解码约束选择性地丢弃相对编码的帧以形成媒体的子集，以及接收该子集的帧 。 该方法还包括以相反的顺序选择包括在该子集内的所选择的图像组（GOP），并按照前向顺序帧顺序解码GOP的相对编码的帧。 该方法还包括以前向顺序帧顺序缓存GOP的相对编码的帧，并且当根据存储器约束和/或显示器缓存，丢弃和重写相对编码的GOP的一个或多个GOP时， 约束。 该方法还包括以反向顺序帧顺序显示GOP的相对编码的帧。