公开(公告)号：US20040240862A1

公开(公告)日：2004-12-02

申请号：US10795796

申请日：2004-03-08

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Jianhua Sun ,  George Sapna

IPC: H04N005/781

CPC classification number: G11B20/10527 ,  G10L19/00 ,  G11B2020/10546 ,  H04N5/9267

Abstract: A method is disclosed of decoding audio data, encoded in multiple DIF blocks in a Digital Video (DV) data stream, and outputting said audio data as a PCM frame, including the following steps: (i) fetching a single Digital Interface Frame (DIF) block from the DV data stream; (ii) de-shuffling a first byte in the single DIF block to determine its index (n) in the PCM frame; (iii) repeating step (ii) until the last byte in the single DIF block is processed; (iv) writing the de-shuffled data into the PCM frame for output if the present DIF block is the last in the present DV frame; (v) repeat steps (i) to (iv). Also disclosed is apparatus arranged to perform the method, and de-shuffling equations to perform the de-shuffling of the data.

Abstract translation: 公开了对数字视频（DV）数据流中的多个DIF块进行编码的音频数据进行解码，并将所述音频数据作为PCM帧输出的方法，包括以下步骤：（i）获取单个数字接口帧 ）阻止DV数据流; （ii）在单个DIF块中去混洗第一个字节以确定其在PCM帧中的索引（n）; （iii）重复步骤（ii），直到处理单个DIF块中的最后一个字节; （iv）如果当前DIF块是当前DV帧中的最后一个，则将去混洗数据写入PCM帧中以进行输出; （v）重复步骤（i）至（iv）。 还公开了被配置为执行该方法的装置，以及去混洗方程式来执行数据的去混洗。