Multilevel data compression using a single compression engine
    5.
    发明授权
    Multilevel data compression using a single compression engine 失效
    使用单个压缩引擎的多级数据压缩

    公开(公告)号:US07197077B2

    公开(公告)日:2007-03-27

    申请号:US10037453

    申请日:2001-12-20

    IPC分类号: H04N7/12 H04N11/02

    CPC分类号: H04N19/436 H04N19/60

    摘要: A single compression engine determines a plurality of discrete cosine transform (DCT) coefficients based on a discrete cosine transform of a plurality of blocks of data. The single compression engine provides first and second DCT-encoded signals. The first DCT-encoded signal uses at most t coefficient bits to represent each of the DCT coefficients. The second DCT-encoded signal uses at most u coefficient bits, where u is less than t, to represent each of the DCT coefficients.

    摘要翻译: 单个压缩引擎基于多个数据块的离散余弦变换来确定多个离散余弦变换(DCT)系数。 单个压缩引擎提供第一和第二DCT编码信号。 第一DCT编码信号最多使用t个系数比特来表示每个DCT系数。 第二个DCT编码信号最多使用u个小于t的u个系数位来表示每个DCT系数。