发明名称 |
PWM Communication system |
摘要 |
A data output portion transmits a pulse signal having a pulse width according to a value of transmit data on a predetermined cycle. An H pulse width counter and an L pulse width counter measure a length of a high level period and a length of a low level period in the received pulse signal by using a clock signal having the same frequency as that of the clock signal used in the data output portion. A comparing portion compares the sum of both the measured lengths of the periods with the predetermined cycle, and outputs an error signal in case of a mismatch. In a PWM communication system, it is also possible to detect a signal delay or an error of the clock signal, which is temporarily caused within one cycle.
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申请公布号 |
US5621758(A) |
申请公布日期 |
1997.04.15 |
申请号 |
US19960591718 |
申请日期 |
1996.01.25 |
申请人 |
MITSUBISHI ELECTRIC SEMICONDUCTOR SOFTWARE;MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
SUZUKI, SHINICHI;YAMAZOE, HIROFUMI |
分类号 |
H03M5/08;H04L1/24;H04L25/48;H04L25/49;(IPC1-7):H03K9/08 |
主分类号 |
H03M5/08 |
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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