Fixed frequency clock output signal with a variable high frequency input clock pulse and a fixed frequency reference signal non-interconnected

摘要

A digital circuit produces very precise clock frequencies for applications which a small degree of jitter can be tolerated, but accurate long time frequencies, for example, a video rate for a laser printer. A certain part of pixels jitter is acceptable, however, the total pixel rate precisely and remains the same. In some applications, the jitter be desirable in order to realize the emi - spectrum. If, for example, the high frequency input clock signal is modulated, the flanks of the video clock are likewise modulated and nevertheless remain within the jitter - and frequenzspezifikation.l