公开(公告)号：US20140219332A1

公开(公告)日：2014-08-07

申请号：US13782425

申请日：2013-03-01

Applicant: BROADCOM CORPORATION

Inventor： Zhijie Yang

IPC: H04N7/26

CPC classification number: H04N19/423 ,  H04N19/16 ,  H04N19/44

Abstract: Aspects of virtual field buffer based decoding are described. In one embodiment, a current picture field is read from a coded picture buffer comprising coded pictures of video, for example. The current picture may be associated with a top or bottom field polarity. According to decoding and picture output orders, the current picture field is assigned to an available field entry of a virtual field buffer, and an available frame index of a virtual frame map is assigned to the current picture field. The assignment of the available frame index to the current picture field is indicated to a decoder that decodes the current picture field with reference to the assigned frame index. According to aspects of the embodiments described herein, rather than determining complimentary picture fields after decoding, the assignment of complimentary picture fields to virtual frame indexes before decoding provides certain efficiencies.

Abstract translation: 描述了基于虚拟场缓冲器的解码的方面。 在一个实施例中，例如从包括视频的编码图像的编码图像缓冲器读取当前图像场。 当前画面可能与顶部或底部场极性相关联。 根据解码和图像输出顺序，将当前图像字段分配给虚拟场缓冲器的可用字段条目，并将虚拟帧映射的可用帧索引分配给当前图片字段。 可用帧索引对当前图像字段的分配被指示给参照所分配的帧索引解码当前图像字段的解码器。 根据这里描述的实施例的方面，不是在解码之后确定补充图像字段，而是在解码之前将补码图像字段分配给虚拟帧索引提供了一定的效率。

公开(公告)号：US20140112383A1

公开(公告)日：2014-04-24

申请号：US13655878

申请日：2012-10-19

Applicant: BROADCOM CORPORATION

Inventor： Zhijie Yang ,  Xuemin Chen

IPC: H04N7/26

CPC classification number: H04N21/44 ,  H04N19/40

Abstract: In various embodiments, video streams are decoded using decoders that support a different decoding profile. First processing circuitry is configured to receive a video stream encoded using a first encoding profile, transcode the video stream from the first encoding profile to a second encoding profile, and store the transcoded video stream in an output buffer. Second processing circuitry is configured to receive the transcoded video stream from the output buffer and decode the transcoded video stream according to the second encoding profile. The second processing circuitry may be unable to decode the video stream encoded using the first encoding profile.

Abstract translation: 在各种实施例中，使用支持不同解码简档的解码器解码视频流。 第一处理电路被配置为接收使用第一编码简档编码的视频流，将视频流从第一编码简档转码为第二编码简档，并将转码的视频流存储在输出缓冲器中。 第二处理电路被配置为从输出缓冲器接收经转码的视频流，并根据第二编码简档解码转码的视频流。 第二处理电路可能不能解码使用第一编码简档编码的视频流。