基本信息:
- 专利标题： DETECTION METHOD AND DEVICE FOR FRAME TYPE
- 专利标题（中）：RAVMENTYP-DETEKTIONSVERFAHREN UND -VORRICHTUNG
- 申请号：EP11848791.7 申请日：2011-09-29
- 公开(公告)号：EP2637410A1 公开(公告)日：2013-09-11
- 发明人： SHEN, Qiu , XIE, Qingpeng , ZHANG, Dong , LI, Houqiang
- 申请人： Huawei Technologies Co., Ltd. , University of Science and Technology of China
- 申请人地址： Huawei Administration Building Bantian Longgang District Shenzhen, Guangdong 518129 CN
- 专利权人： Huawei Technologies Co., Ltd.,University of Science and Technology of China
- 当前专利权人： Huawei Technologies Co., Ltd.,University of Science and Technology of China
- 当前专利权人地址： Huawei Administration Building Bantian Longgang District Shenzhen, Guangdong 518129 CN
- 代理机构： Haley, Stephen
- 优先权： CN201010594322 20101217
- 国际公布： WO2012079406 20120621
- 主分类号： H04N7/64
- IPC分类号： H04N7/64 ; H04N7/32
摘要：
Embodiments of the present invention disclose a method and an apparatus for detecting frame types. The method includes: detecting play time of each frame; and if the play time of a current frame is less than the maximum play time of received frames, determining the current frame as a bi-directional predicted frame, B-frame. In the technical solutions provided by the embodiments of the present invention, the frame types are determined according to a coding sequence of various frames and comparison between data amounts of various frames received earlier and later, without decoding a payload. Therefore the impact of a reduction factor is eliminated and the frame types can be detected more accurately.
摘要（中）：
本发明的实施例公开了一种用于检测帧类型的方法和装置。 该方法包括：检测每帧的播放时间; 并且如果当前帧的播放时间小于接收帧的最大播放时间，则将当前帧确定为双向预测帧B帧。 在本发明实施例提供的技术方案中，帧类型根据各种帧的编码顺序以及较早和较晚接收到的各种帧的数据量之间的比较来确定，而无需解码有效载荷。 因此，消除了减小因子的影响，并且可以更准确地检测帧类型。
公开/授权文献:
- EP2637410B1 DETECTION METHOD AND DEVICE FOR FRAME TYPE 公开/授权日：2020-09-09