| 摘要 |
PCT No. PCT/SE82/00399 Sec. 371 Date Jul. 22, 1983 Sec. 102(e) Date Jul. 22, 1983 PCT Filed Nov. 25, 1982 PCT Pub. No. WO83/02045 PCT Pub. Date Jun. 9, 1983.A phase locked loop for bringing an oscillator (1) into phase with an incoming signal. In accordance with the invention there are means which on the one hand determine whether the phase difference between the oscillator output signal and the incoming signal is positive or negative and on the other hand in response thereto cause the oscillator (1) to emit either of two output signal frequencies, one of which is predeterminately higher while the other is predeterminately lower than the incoming signal frequency. The oscillator (1) is hereby brought into phase with the incoming signal when the former emits its two output signal frequencies alternatingly. |
