公开(公告)号：US20140029846A1

公开(公告)日：2014-01-30

申请号：US13664359

申请日：2012-10-30

Applicant: APPLE INC.

Inventor： Yeping SU ,  Jiefu ZHAI ,  James Oliver NORMILE ,  Hsi-Jung WU ,  Hao PAN

IPC: G09G5/02

CPC classification number: G09G3/2048 ,  G09G3/2066 ,  G09G2340/06 ,  G09G2350/00

Abstract: YCbCr image data may be dithered and converted into RGB data shown on a 8-bit or other bit display. Dither methods and image processors are provided which generate the banding artifact free image data during this process. Some methods and image processors may applying a stronger dither having a same mean with a larger variance to the image data before it is converted to RGB data. Others methods and image processors may calculate a quantization or encoding error and diffuse the calculated error among one or more neighboring pixel blocks.

Abstract translation: YCbCr图像数据可以抖动并转换成8位或其他位显示器上显示的RGB数据。 提供抖动方法和图像处理器，其在该处理期间产生无带纹带图像数据。 一些方法和图像处理器可以在将图像数据转换成RGB数据之前，对图像数据应用具有相同平均值的较强抖动。 其他方法和图像处理器可以计算量化或编码误差并且在一个或多个相邻像素块之间扩展所计算的误差。

公开(公告)号：US20140269932A1

公开(公告)日：2014-09-18

申请号：US13800905

申请日：2013-03-13

Applicant: Apple Inc.

Inventor： Yeping SU ,  Chris Y. CHUNG ,  Xiaosong ZHOU ,  James Oliver NORMILE ,  Hsi-Jung WU ,  Thomas JANSEN ,  Hyeonkuk JEONG ,  Joe S. ABUAN ,  Douglas Scott PRICE

IPC: H04N7/26

CPC classification number: H04N21/234372 ,  H04N21/23439 ,  H04N21/2381 ,  H04N21/4384 ,  H04N21/44004

Abstract: A video streaming method for transitioning between multiple sequences of coded video data may include receiving and decoding transmission units from a first sequence of coded video data. In response to a request to transition to a second sequence of coded video data, the method may determine whether a time to transition to the second sequence of coded video data can be reduced by transitioning to the second sequence of coded video data via an intermediate sequence of coded video data. If the time can be reduced, the method may include receiving at least one transmission unit from an intermediate sequence of coded video data that corresponds to the request to transition, decoding the transmission unit from the intermediate sequence, and transitioning from the first sequence to the second sequence via the decoded transmission unit from the intermediate sequence.

Abstract translation: 用于在多个编码视频数据序列之间转换的视频流方法可以包括从第一编码视频数据序列接收和解码传输单元。 响应于转换到第二编码视频数据序列的请求，该方法可以通过经由中间序列转换到第二编码视频数据序列来确定是否可以减少转换到第二编码视频数据序列的时间 的编码视频数据。 如果可以减少时间，则该方法可以包括从与转换请求对应的编码视频数据的中间序列接收至少一个传输单元，从中间序列解码传输单元，以及从第一序列转换到 通过来自中间序列的解码传输单元的第二序列。