Magnetic recording medium
    1.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4578729A

    公开(公告)日:1986-03-25

    申请号:US434600

    申请日:1982-10-15

    摘要: A magentic recording medium in which a thin ferromagnetic film is formed over a strip or sheet of plastic film whose surface is formed with grain-, rumple- or worm-like nodules into which may be dispersed finely divided particles of the diameter ranging from 0.01 to 0.2 .mu.m. In the case of a thin ferromagnetic metal film type recording medium, steep protrusions of the height ranging from 100 to 2,000 .ANG. are distributed over the surface at the average density of 10.sup.4 to 10.sup.6 per mm.sup.2.

    摘要翻译: 一种磁性记录介质,其中薄的铁磁膜形成在其表面形成有颗粒状,um状或蠕虫状结节的塑料薄膜条或片上,其中可以将直径范围为0.01至 0.2亩。 在薄铁磁性金属膜型记录介质的情况下,高度范围为从100到2,000安培的陡峭突起以平均密度分布在表面上,每平方毫米为104到106。

    Magnetic recording material
    5.
    发明授权
    Magnetic recording material 失效
    磁记录材料

    公开(公告)号:US4647507A

    公开(公告)日:1987-03-03

    申请号:US791075

    申请日:1985-10-24

    IPC分类号: G11B5/72

    摘要: A magnetic recording medium wherein a thin layer comprising an organic compound having at least one carboxyl or mercapto group, at least one fluoroalkyl group having 3 or more carbon atoms and at least one aliphatic alkyl group having 8 or more carbon atoms on its molecular terminals is formed on an oxygen-containing thin film of a ferromagnetic metal.The magnetic recording medium of the present invention is suitable for use as the magnetic recording media of magnetic tape, magnetic disk and the like and most suitable for use in rotating head type video tape recorders.

    摘要翻译: 一种磁记录介质,其中包含具有至少一个羧基或巯基的有机化合物,至少一个具有3个或更多个碳原子的氟代烷基和至少一个在其分子末端具有8个或更多个碳原子的脂族烷基的薄层, 形成在铁磁性金属的含氧薄膜上。 本发明的磁记录介质适用于磁带,磁盘等的磁记录介质,最适用于旋转磁头型录像机。

    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.