Heat sensitive recording material
    28.
    发明授权
    Heat sensitive recording material 失效
    热敏记录材料

    公开(公告)号:US5466656A

    公开(公告)日:1995-11-14

    申请号:US310500

    申请日:1994-09-22

    IPC分类号: B41M5/327 B41M5/333 B41M5/30

    CPC分类号: B41M5/3336 B41M5/3275

    摘要: The present invention provides a heat sensitive recording material comprising a recording layer formed on a substrate and containing a colorless or light-colored basic dye and a color acceptor, the material being characterized in that the basic dye is 3-(N-ethyl-N-p-tolyl)amino-6-methyl-7-p-toluidinofluoran, the color acceptor is bis(3-allyl-4-hydroxyphenyl)sulfone and/or 4-hydroxy-4'-isopropoxydiphenylsulfone.

    摘要翻译: 本发明提供了一种热敏记录材料,其包括形成在基材上的含有无色或浅色碱性染料和着色受体的记录层,其特征在于碱性染料为3-(N-乙基-Np (3-烯丙基-4-羟基苯基)砜和/或4-羟基-4'-异丙氧基二苯基砜。

    Floating point digital to analog converter with bias to establish range
midpoint
    29.
    发明授权
    Floating point digital to analog converter with bias to establish range midpoint 失效
    浮点数字到模拟转换器,偏置建立范围中点

    公开(公告)号:US5021785A

    公开(公告)日:1991-06-04

    申请号:US463876

    申请日:1990-01-05

    IPC分类号: H03M1/70 H03M1/78

    CPC分类号: H03M1/70 H03M1/785

    摘要: A digital-to-analog converter converts digital data in the floating-point representation into an analog signal. The mantissa part of the digital data is first converted into a first analog signal by an R-2R resistor ladder network. The first analog signal thus obtained is directly supplied to another r-2r resistor ladder network to produce second analog signals whose values are 2.sup.-N (N=0, 1, 2, . . . ) magnifications of the first analog signal. And, one of the second analog signals is selectively outputted in accordance with the exponent part of the digital data. A data converter is also provided for converting digital data in the form of a fix-point number into floating point data.

    摘要翻译: 数模转换器将浮点表示中的数字数据转换为模拟信号。 数字数据的尾数部分首先通过R-2R电阻梯形网络转换为第一模拟信号。 如此获得的第一模拟信号被直接提供给另一个r-2r电阻梯形网络,以产生第二模拟信号,其值为第一模拟信号的2-N(N = 0,1,2 ...)倍率。 并且,根据数字数据的指数部分选择性地输出第二模拟信号之一。 还提供了一种数据转换器,用于将固定点数形式的数字数据转换为浮点数据。