公开(公告)号：US09313488B2

公开(公告)日：2016-04-12

申请号：US14175555

申请日：2014-02-07

Applicant: Apple Inc.

Inventor： Hsi-Jung Wu ,  Barin Geoffry Haskell ,  Xiaojin Shi ,  James Oliver Normile

IPC: H04N7/12 ,  H04N19/44 ,  H04N19/149 ,  H04N19/152

CPC classification number: H04N19/44 ,  H04N19/149 ,  H04N19/152

Abstract: Disclosed is a system and method of controlling a video decoder, including a reviewing channel data representing coded video data generated by an encoder to identify parameters of a hypothetical reference decoder (HRD) used by the encoder during coding operations. A parameter representing an exit data rate requirement of a coded picture buffer (CPB) of the HRD is compared against exit rate performance of the video decoder. If the exit rate performance of the video coder matches the exit rate requirement of the HRD, the coded video data is decoded, otherwise, a certain decoding degradation scheme can be applied, including disabling decoder from decoding the coded video data.

公开(公告)号：US08675740B2

公开(公告)日：2014-03-18

申请号：US13731819

申请日：2012-12-31

Applicant: Apple Inc.

Inventor： Hsi-Jung Wu ,  Barin Geoffry Haskell ,  Xiaojin Shi ,  James Oliver Normile

IPC: H04N7/12

CPC classification number: H04N19/44 ,  H04N19/149 ,  H04N19/152

Abstract: Disclosed is a system and method of controlling a video decoder, including a reviewing channel data representing coded video data generated by an encoder to identify parameters of a hypothetical reference decoder (HRD) used by the encoder during coding operations. A parameter representing an exit data rate requirement of a coded picture buffer (CPB) of the HRD is compared against exit rate performance of the video decoder. If the exit rate performance of the video coder matches the exit rate requirement of the HRD, the coded video data is decoded, otherwise, a certain decoding degradation scheme can be applied, including disabling decoder from decoding the coded video data.

Abstract translation: 公开了一种控制视频解码器的系统和方法，包括：代表由编码器产生的编码视频数据的查看频道数据，以识别由编码器在编码操作期间使用的假设参考解码器（HRD）的参数。 将表示HRD的编码图像缓冲器（CPB）的退出数据速率要求的参数与视频解码器的退出速率性能进行比较。 如果视频编码器的退出速率性能与HRD的退出率要求相匹配，则编码的视频数据被解码，否则可以应用某种解码劣化方案，包括禁止解码器解码编码的视频数据。

公开(公告)号：US20130182778A1

公开(公告)日：2013-07-18

申请号：US13731819

申请日：2012-12-31

Applicant: Apple Inc.

Inventor： Hsi-Jung WU ,  Barin Geoffry Haskell ,  Xiaojin Shi ,  James Oliver Normile

IPC: H04N7/26

CPC classification number: H04N19/44 ,  H04N19/149 ,  H04N19/152

Abstract: Disclosed is a system and method of controlling a video decoder, including a reviewing channel data representing coded video data generated by an encoder to identify parameters of a hypothetical reference decoder (HRD) used by the encoder during coding operations. A parameter representing an exit data rate requirement of a coded picture buffer (CPB) of the HRD is compared against exit rate performance of the video decoder. If the exit rate performance of the video coder matches the exit rate requirement of the HRD, the coded video data is decoded, otherwise, a certain decoding degradation scheme can be applied, including disabling decoder from decoding the coded video data.

公开(公告)号：US20160073128A1

公开(公告)日：2016-03-10

申请号：US14929145

申请日：2015-10-30

Applicant: APPLE INC.

Inventor： Barin Geoffry Haskell ,  David William Singer ,  Adriana Dumitras ,  Atul Puri

IPC: H04N19/513 ,  H04N19/91 ,  H04N19/61 ,  H04N19/46 ,  H04N19/577 ,  H04N19/587

CPC classification number: H04N19/513 ,  G06T9/005 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/40 ,  H04N19/43 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/577 ,  H04N19/587 ,  H04N19/61 ,  H04N19/91 ,  H04N21/4305

Abstract: A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.

公开(公告)号：US20150131712A1

公开(公告)日：2015-05-14

申请号：US14599285

申请日：2015-01-16

Applicant: Apple Inc.

Inventor： Barin Geoffry Haskell ,  David William Singer ,  Thomas Pun ,  Hsi-Jung Wu ,  James Oliver Normile

IPC: H04N19/30

CPC classification number: H04N19/30 ,  H04N19/132 ,  H04N19/187 ,  H04N19/196 ,  H04N19/33 ,  H04N19/46 ,  H04N19/61 ,  H04N21/234327 ,  H04N21/2389 ,  H04N21/2662 ,  H04N21/4385 ,  H04N21/64792 ,  H04N21/6582 ,  H04N21/8451

Abstract: Scalable video coding and multiplexing compatible with non-scalable decoders is disclosed. In some embodiments, video data is received and encoded in a manner that renders at least a base layer to be compatible with a non-scalable video encoding standard, including by assigning for at least the base layer default values to one or more scalability parameters. In some embodiments, video data is received and encoded to produce an encoded video data that includes a base layer that conforms to a non-scalable video encoding standard and one or more subordinate non-scalable layers, which subordinate non-scalable layers do not by themselves conform to the non-scalable video encoding standard but which can he combined with the base layer to produce a result that does conform to the non-scalable video encoding standard, such that the result can be decoded by a non-scalable decoder. An identification data identifying those portions of the encoded video data that are associated with a subordinate non-scalable layer is included in the encoded video data.

Abstract translation: 公开了与不可扩展解码器兼容的可扩展视频编码和复用。 在一些实施例中，视频数据以使至少基本层与不可扩展视频编码标准兼容的方式被接收和编码，包括通过将至少基本层默认值分配给一个或多个可伸缩性参数。 在一些实施例中，视频数据被接收和编码以产生编码的视频数据，该编码视频数据包括符合不可分级视频编码标准的基本层和一个或多个从属非可缩放层，其中不可扩展层不由 它们符合不可扩展视频编码标准，但是它可以与基本层组合以产生符合非可分级视频编码标准的结果，使得结果可以由不可扩展解码器解码。 识别与下级不可缩放层相关联的编码视频数据部分的识别数据被包括在编码视频数据中。

公开(公告)号：US20140153653A1

公开(公告)日：2014-06-05

申请号：US14175555

申请日：2014-02-07

Applicant: APPLE INC.

Inventor： Hsi-Jung Wu ,  Barin Geoffry Haskell ,  Xiaojin Shi ,  James Oliver Normile

IPC: H04N19/44

CPC classification number: H04N19/44 ,  H04N19/149 ,  H04N19/152

Abstract: Disclosed is a system and method of controlling a video decoder, including a reviewing channel data representing coded video data generated by an encoder to identify parameters of a hypothetical reference decoder (HRD) used by the encoder during coding operations. A parameter representing an exit data rate requirement of a coded picture buffer (CPB) of the HRD is compared against exit rate performance of the video decoder. If the exit rate performance of the video coder matches the exit rate requirement of the HRD, the coded video data is decoded, otherwise, a certain decoding degradation scheme can be applied, including disabling decoder from decoding the coded video data.

Abstract translation: 公开了一种控制视频解码器的系统和方法，包括：代表由编码器产生的编码视频数据的查看频道数据，以识别由编码器在编码操作期间使用的假设参考解码器（HRD）的参数。 将表示HRD的编码图像缓冲器（CPB）的退出数据速率要求的参数与视频解码器的退出速率性能进行比较。 如果视频编码器的退出速率性能与HRD的退出率要求相匹配，则编码的视频数据被解码，否则可以应用某种解码劣化方案，包括禁止解码器解码编码的视频数据。