| 摘要 |
<p>PURPOSE:To easily attain high reliability by sampling an inputted signal for an optional time to detect phase amplitude information and comparing the information with substantial absolute information so as to compensate the difference, that is, an error. CONSTITUTION:A latch 6 latches an amplitude error signal and an enable signal C is fed from a ROM 35. A latch 7 latches a phase error signal and an enable signal D is fed from the ROM 35. The data fetched by the latch 6 as the amplitude error is calculated by a CPU 22 and the result is fed to a D/A converter 28. Then a reference voltage deciding the amplitude of the A/D converter 3 is varied by a voltage generated from the D/A converter 28. A phase compensation circuit 36 receiving a trigger signal 60 varies the phase of an output 62 with a voltage 61 in response to the phase difference. That is, a phase comparator circuit 31 compares, e.g. two trailing phases and sends a voltage in response to the phase difference to a voltage control circuit 32 to compensate the phase error.</p> |
