发明名称 |
Device for economizing data bandwidth |
摘要 |
Subharmonics of a data waveform are generated for the purpose of reducing data bandwidth prior to transmission. Input data waveform is phase split and the antiphased output signals are fed to a rectifier. The rectification of antiphased signals creates two pulsating voltage with opposite polarity. The pulsating voltages are alternately switched by a chopper to provide a sinusoidal signal. The sinusoidal signal is filtered to average the energy of the pulsating voltage to provide a smooth waveform of one-half the frequency of the input data waveform.
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申请公布号 |
US4386321(A) |
申请公布日期 |
1983.05.31 |
申请号 |
US19810269182 |
申请日期 |
1981.06.02 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
SAVAGE, DONALD J. |
分类号 |
H04B1/66;(IPC1-7):H03B15/00;H03K21/00 |
主分类号 |
H04B1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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