会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Method and apparatus for measuring the electroacoustic properties of
magnetic tapes
    • 用于测量磁带的电声特性的方法和装置
    • US4251882A
    • 1981-02-17
    • US952613
    • 1978-10-18
    • Dietmar Pfefferkorn
    • Dietmar Pfefferkorn
    • G01R33/12G11B5/03G11B33/10G01R31/20G06F11/00
    • G01R33/1207G11B33/10G11B5/03
    • A method and apparatus for measuring the electroacoustic properties of magnetic tapes by means of recorded test signals of varying frequency and amplitude, wherein measured values of the reproduced signals which depend on the biassing current and correspond to predetermined parameters are obtained; for each of the relevant values of the biassing current the amplitude of the test signal to the recorded is varied until the predetermined value of the reproduced signal is attained, and the measured value of the reproduced signal obtained in this way is registered, an amplitude-modulated test signal is recorded and, by means of a test programming unit and upon the attainment of a parameter value which controls this programming unit, the relevant measured value of the reproduced signal to be determined is transmitted to an intermediate storage device for further evaluation and the biassing current is varied in order to determine the next value to be measured.
    • 一种用于通过记录的频率和幅度变化的测试信号测量磁带的电声特性的方法和装置,其中获得取决于偏置电流并对应于预定参数的再现信号的测量值; 对于偏置电流的每个相关值,测量信号对所记录的振幅的变化直到获得再现信号的预定值,并且以这种方式获得的再现信号的测量值被记录, 记录调制的测试信号,并且通过测试编程单元,并且在获得控制该编程单元的参数值时,将要确定的再现信号的相关测量值发送到中间存储设备用于进一步评估, 改变偏置电流以便确定下一个要测量的值。