| 摘要 |
This phase lock detection device for a digital phase-locked loop is such that the phase-locked loop (1) including a detector of phase disparity between the said incoming signal and the said outgoing signal, and the output signal from this phase-disparity detector exhibiting transitions of a first type coinciding with the transitions of a given type of the outgoing signal, and transitions of a second type coinciding with the transitions of a given type of the incoming signal, this device includes, in order to carry out the said phase-lock detection, phase-lock detection means (5) themselves including means for carrying out sampling of the output signal from the phase detector, by those of the transitions of the outgoing signal which are of opposite type to the said given type, means (50) for storing groups of consecutive samples, equal to at least 3 in number, and means (54) for detecting the instant at which, for the first time, two at least of the said samples do not have the same logic level. …<IMAGE>… |
