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    • 3. 发明申请
    • METHOD AND SYSTEM FOR EMBEDDING METADATA IN MULTIPLEXED ANALOG VIDEOS BROADCASTED THROUGH DIGITAL BROADCASTING MEDIUM
    • 用于通过数字广播介质广播的多路复用模拟视频中嵌入元数据的方法和系统
    • US20140208379A1
    • 2014-07-24
    • US14238728
    • 2012-08-23
    • Aniruddha SinhaArindam SahaArpan Pal
    • Aniruddha SinhaArindam SahaArpan Pal
    • H04N21/236
    • H04N21/23614H04N7/025H04N7/08
    • A method and system for broadcast of additional content such as metadata required for client specific interactive application in an analog domain along with conventional audio, video and PSI or SI data is disclosed. The present invention enables transmission of encoded audio data or EPG data, timestamp information required for audio video synchronization referred to as metadata by embedding such metadata in the pixels of video pixels and then encoding by the standard video encoder to generate an encoded stream. The encoded stream is decoded using the standard video decoder at the receiving station to generate a Composite Video Blanking and Sync (CVBS) analog video signal. From the CVBS signal, the RGB or YUV pixels of the videos are extracted. Finally a data extractor module retrieves the embedded metadata from the RGB or YUV pixels.
    • 公开了一种用于广播附加内容的方法和系统,例如模拟域中的客户特定交互应用所需的元数据以及常规音频,视频和PSI或SI数据。 本发明能够通过将视频像素的像素嵌入这些元数据,然后通过标准视频编码器进行编码以产生编码流,从而传送编码的音频数据或EPG数据,将音频视频同步所需的时间戳信息称为元数据。 在接收站使用标准视频解码器解码编码的流,以产生复合视频消隐和同步(CVBS)模拟视频信号。 从CVBS信号中,提取视频的RGB或YUV像素。 最后,数据提取器模块从RGB或YUV像素检索嵌入的元数据。
    • 7. 发明授权
    • Implementation of an inverse discrete cosine transform using single instruction multiple data instructions
    • 使用单指令多数据指令实现反离散余弦变换
    • US07020671B1
    • 2006-03-28
    • US09531607
    • 2000-03-21
    • Arindam Saha
    • Arindam Saha
    • G06F17/14
    • G06F17/147G06T9/007
    • Compressed data are decompressed using an inverse discrete cosine transform (IDCT). A first one directional (1D) IDCT is performed resulting in a plurality of first 1D IDCT coefficients followed by a second 1D IDCT resulting in a plurality of second 1D IDCT coefficients. In performing the first 1D IDCT and the second 1D IDCT a first plurality of intermediate butterfly computations are performed which include performing a plurality of intermediate multiplications resulting in a plurality of initial products and performing a plurality of intermediate additions resulting in intermediate product which are maintained at no more than 16-bits utilizing a round near positive (RNP) rounding scheme. Following the second 1D IDCT a rounding and shifting of the plurality of second 1D IDCT coefficients is performed utilizing a round away from zero (RAZ) rounding scheme resulting in a plurality of output coefficients which comply with the IEEE 1180 standard.
    • 使用逆离散余弦变换(IDCT)对压缩数据进行解压缩。 执行第一单向(1D)IDCT,导致多个第一1DIDCT系数,随后是导致多个第二1D IDCT系数的第二1DIDCT。 在执行第一1DIDCT和第二1DIDCT时,执行第一多个中间蝶形运算,其包括执行多个中间乘法,得到多个初始乘积并执行多个中间加法,导致中间乘积维持在 不超过16位,使用圆形接近正(RNP)舍入方案。 在第二1D IDCT之后,使用从零(RAZ)舍入方案的圆形执行多个第二1D IDCT系数的舍入和移位,导致符合IEEE 1180标准的多个输出系数。