公开(公告)号：EP1465058A2

公开(公告)日：2004-10-06

申请号：EP04101380.6

申请日：2004-04-02

Applicant: ST Microelectronics Asia Pacific (Pte) Ltd

Inventor： Plessier, Bernard

IPC: G06F7/72

CPC classification number: G06F7/728

Abstract: An apparatus and method is disclosed for performing the modular operation S=AB mod N. The apparatus is arranged such that the constant J0 which is ordinarily required in order to complete the operation is not required to be explicitly computed, thus simplifying and speeding up the operation.

Abstract translation: 公开了一种用于执行模块化操作S = AB mod N的装置和方法。该装置被布置为使得不需要明确地计算通常需要的用于完成操作的常数J0，从而简化和加速 操作。

公开(公告)号：EP1455356A2

公开(公告)日：2004-09-08

申请号：EP04100920.0

申请日：2004-03-06

Applicant: ST Microelectronics Asia Pacific (Pte) Ltd

Inventor： Sun, Jian Hua ,  George, Sapna

IPC: G11B20/10 ,  H04N5/926

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: 公开了一种对数字视频（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和去混洗方程以执行数据的去混洗。