Devices and methods for data compression and decompression
    1.
    发明授权
    Devices and methods for data compression and decompression 有权
    用于数据压缩和解压缩的设备和方法

    公开(公告)号:US08175164B2

    公开(公告)日:2012-05-08

    申请号:US11469558

    申请日:2006-09-01

    IPC分类号: H04N7/12

    摘要: A device for data compression includes a domain transformer unit, a classifying unit, a variable length encoder, a fixed length encoder and a memory unit. The domain transformer unit transforms time-domain data into frequency-domain data. The classifying unit determines an encoding type of the frequency-domain data based on occurrence probability of the frequency-domain data. The variable length encoder encodes first frequency-domain data that are determined to be encoded by variable length coding. The fixed length encoder encodes second frequency-domain data that are determined to be encoded by fixed length coding. The memory unit stores the encoded first and second frequency-domain data by relocating the encoded first and second frequency-domain data such that the encoded first frequency-domain data are placed adjacently and the encoded second frequency-domain data are placed adjacently. Therefore, the time for decoding the corresponding data may be reduced.

    摘要翻译: 用于数据压缩的装置包括域变换器单元,分类单元,可变长度编码器,固定长度编码器和存储器单元。 域变换器单元将时域数据转换为频域数据。 分类单元基于频域数据的发生概率来确定频域数据的编码类型。 可变长度编码器对被确定为通过可变长度编码进行编码的第一频域数据进行编码。 固定长度编码器编码被确定为由固定长度编码编码的第二频域数据。 存储器单元通过重新定位编码的第一和第二频域数据来存储经编码的第一和第二频域数据,使得编码的第一频域数据相邻放置,并且编码的第二频域数据被相邻地放置。 因此,可以减少对相应数据进行解码的时间。

    DEVICES AND METHODS FOR DATA COMPRESSION AND DECOMPRESSION
    2.
    发明申请
    DEVICES AND METHODS FOR DATA COMPRESSION AND DECOMPRESSION 有权
    用于数据压缩和分解的设备和方法

    公开(公告)号:US20070047654A1

    公开(公告)日:2007-03-01

    申请号:US11469558

    申请日:2006-09-01

    IPC分类号: H04N11/04 H04N7/12

    摘要: A device for data compression includes a domain transformer unit, a classifying unit, a variable length encoder, a fixed length encoder and a memory unit. The domain transformer unit transforms time-domain data into frequency-domain data. The classifying unit determines an encoding type of the frequency-domain data based on occurrence probability of the frequency-domain data. The variable length encoder encodes first frequency-domain data that are determined to be encoded by variable length coding. The fixed length encoder encodes second frequency-domain data that are determined to be encoded by fixed length coding. The memory unit stores the encoded first and second frequency-domain data by relocating the encoded first and second frequency-domain data such that the encoded first frequency-domain data are placed adjacently and the encoded second frequency-domain data are placed adjacently. Therefore, the time for decoding the corresponding data may be reduced.

    摘要翻译: 用于数据压缩的装置包括域变换器单元,分类单元,可变长度编码器,固定长度编码器和存储器单元。 域变换器单元将时域数据转换为频域数据。 分类单元基于频域数据的发生概率来确定频域数据的编码类型。 可变长度编码器对被确定为通过可变长度编码进行编码的第一频域数据进行编码。 固定长度编码器编码被确定为由固定长度编码编码的第二频域数据。 存储器单元通过重新定位编码的第一和第二频域数据来存储经编码的第一和第二频域数据,使得编码的第一频域数据相邻放置,并且编码的第二频域数据被相邻地放置。 因此,可以减少对相应数据进行解码的时间。