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    • 2. 发明授权
    • Systems and methods for generating tones for operating telephones
    • 用于产生操作电话音调的系统和方法
    • US06940974B2
    • 2005-09-06
    • US10236251
    • 2002-09-04
    • Clifford J. AugustThomas Heinrich SternbergMathieu Schneider
    • Clifford J. AugustThomas Heinrich SternbergMathieu Schneider
    • H04M1/02H04M1/03H04M1/50H04M3/00
    • H04M1/03H04M1/505
    • A system for generating number tones for dialing a telephone device comprising a microphone. The system comprises a housing, a first data entry device, first and second memory devices, an output signal generator, and a transducer. The housing defines a sound opening. The first data entry device is supported by the housing and is associated with a first sequence of stored digits. The first memory device stores the first sequence of stored digits. The second memory device stores frequency data associated with number tones. The output signal generator generates, upon activation of the first data entry device, an output signal based on the first sequence of stored digits and the frequency data. The transducer is mounted within the housing adjacent to the sound opening and converts the output signal into an audible signal. The housing is adapted to be attached to the telephone device with the sound opening adjacent to the microphone.
    • 一种用于产生用于拨打包括麦克风的电话设备的号码音的系统。 该系统包括壳体,第一数据输入装置,第一和第二存储器装置,输出信号发生器和换能器。 外壳定义了一个声音开口。 第一个数据输入设备由外壳支持并与第一个存储数字序列相关联。 第一存储器件存储存储数字的第一序列。 第二存储器件存储与数字音调相关联的频率数据。 输出信号发生器在激活第一数据输入装置时产生基于存储数字的第一序列和频率数据的输出信号。 传感器安装在壳体内与声音开口相邻并将输出信号转换为可听见的信号。 壳体适于附接到具有与麦克风相邻的声音开口的电话设备。