Digital image recording and/or reproducing apparatus using a plurality of compression methods
    1.
    发明授权
    Digital image recording and/or reproducing apparatus using a plurality of compression methods 失效
    使用多种压缩方法的数字图像记录和/或再现装置

    公开(公告)号:US06192190B1

    公开(公告)日:2001-02-20

    申请号:US08453489

    申请日:1995-05-30

    IPC分类号: H04N592

    摘要: A digital image recording and/or reproducing apparatus using a plurality of compression methods may include, in a recording section, (a) data compression circuitry, including a plurality of compression circuits which have different compression methods, for changing a compression rate for input digital image data by changing a combination of the plurality of compression circuits compressing the digital input image data and (b) circuitry for recording (1) the digital image data compressed by the data compressing circuit and (2) data representing the compression rate of the digital image data compressed by the data compressing circuit. The apparatus may include a reproducing section having (a) a reproducing circuit for reproducing from the recording medium the digital image data compressed with the compression rate provided by the combination of different compression methods, (b) detecting circuitry for detecting the data representing the predetermined compression rate stored on the recording medium, and (c) reconstruction circuitry for reconstructing the digital image data reproduced by the reproducing circuitry according to the representing data detected by the detecting circuitry.

    摘要翻译: 使用多种压缩方法的数字图像记录和/或再现装置可以在记录部分中包括(a)数据压缩电路,包括具有不同压缩方法的多个压缩电路,用于改变输入数字的压缩率 通过改变压缩数字输入图像数据的多个压缩电路的组合的图像数据和(b)用于记录的电路(1)由数据压缩电路压缩的数字图像数据和(2)表示数字压缩电路的压缩率的数据 由数据压缩电路压缩的图像数据。 该装置可以包括:再现部分,具有(a)再现电路,用于从记录介质再现以不同压缩方法的组合提供的压缩率压缩的数字图像数据,(b)检测电路,用于检测表示预定 存储在记录介质上的压缩率,以及(c)重建电路,用于根据由检测电路检测到的表示数据来重建由再现电路再现的数字图像数据。

    Computerized data compression and analysis using potentially non-adjacent pairs

    公开(公告)号:US20210157818A1

    公开(公告)日:2021-05-27

    申请号:US16951954

    申请日:2020-11-18

    申请人: Takashi Suzuki

    发明人: Takashi Suzuki

    IPC分类号: G06F16/25 G06F16/23 H03M7/30

    摘要: A computerized method of compressing symbolic information organized into a plurality of documents, each document having a plurality of symbols, includes: (i) automatically identifying a plurality of sequential and non-sequential symbol pairs in an input document; (ii) counting the number of appearances of each unique symbol pair; and (iii) producing a compressed document that includes a replacement symbol at each position associated with one of the plurality of symbol pairs, at least one of which corresponds to a non-sequential symbol pair. For each non-sequential pair the compressed document includes corresponding indicia indicating a distance between locations of the non-sequential symbols of the pair in the input document. In some instances the plurality of symbol pairs includes only those pairs of non-sequential symbols for which the distance between locations of the non-sequential symbols of the pair in the input document is less than a numeric distance cap.

    Computerized methods of data compression and analysis

    公开(公告)号:US10387377B2

    公开(公告)日:2019-08-20

    申请号:US15600495

    申请日:2017-05-19

    申请人: Takashi Suzuki

    发明人: Takashi Suzuki

    摘要: A computerized method and apparatus compresses symbolic information, such as text. Symbolic information is compressed by recursively identifying pairs of symbols (e.g., pairs of words or characters) and replacing each pair with a respective replacement symbol. The number of times each symbol pair appears in the uncompressed text is counted, and pairs are only replaced if they appear more than a threshold number of times. In recursive passes, each replaced pair can include a previously substituted replacement symbol. The method and apparatus can achieve high compression especially for large datasets. Metadata, such as the number of times each pair appears, generated during compression of the documents can be used to analyze the documents and find similarities between two documents.