| 摘要 |
PCT No. PCT/US79/00209 Sec. 371 Date Apr. 2, 1979 Sec. 102(e) Date Apr. 2, 1979 PCT Filed Apr. 2, 1979.A frequency/speed controller is provided for controlling the frequency or speed of a device by comparing the frequency of the device to a known reference frequency and matching the device frequency with the reference frequency. The controller uses an up/down counter whose count at any given time is the digital quantized form of <IMAGE> where f1 and f2 are the frequencies to be matched.
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