公开(公告)号：USRE45909E1

公开(公告)日：2016-03-01

申请号：US13689769

申请日：2012-11-30

Applicant: Novatek Microelectronics Corp.

Inventor： Meng-Nan Tsou ,  Jung-fu Hsu

IPC: H04N5/85 ,  G11B27/10 ,  H04N5/44

CPC classification number: G11B27/10 ,  G11B2220/2562 ,  H04N5/4401 ,  H04N5/45 ,  H04N5/76 ,  H04N5/85 ,  H04N7/0122 ,  H04N9/8227 ,  H04N21/4316 ,  H04N21/4347 ,  H04N21/440263 ,  H04N21/4884

Abstract: A video decoding apparatus capable of controlling presentation of sub-pictures includes a first decoder, a second decoder, a first scaler, a second scaler and a combiner. The first decoder and the second decoder respectively decode a digital audio/video signal to generate a decoded video and a decoded sub-picture. In accordance with an output picture size, the decoded video size, the decoded sub-picture size and a sub-picture aspect ratio, the first scaler and the second scaler generate a first scaling factor and a second scaling factor. The combiner combines the decoded video and the decoded sub-picture according to the first scaling factor and the second scaling factor and outputs the combination thereof. A video decoding method and a digital audio/video playback system capable of controlling presentation of sub-pictures are also disclosed.

Abstract translation: 能够控制子画面呈现的视频解码装置包括第一解码器，第二解码器，第一缩放器，第二缩放器和组合器。 第一解码器和第二解码器分别解码数字音频/视频信号以产生解码的视频和解码的子画面。 根据输出图像尺寸，解码视频尺寸，解码子图像尺寸和子图像宽高比，第一缩放器和第二缩放器生成第一缩放因子和第二缩放因子。 组合器根据第一缩放因子和第二缩放因子组合解码视频和解码子画面，并输出其组合。 还公开了能够控制子画面呈现的视频解码方法和数字音频/视频播放系统。