3 results about "Switching time" patented technology

The invention discloses a method for ensuring non-jittering switching of two different signal formats in a matrix. The method for ensuring the non-jittering switching of the two different signal formats in the matrix comprises the following steps: according to the different signal formats, delaying for corresponding delaying time durations; and switching signals. After implementation of the technical scheme, the method has the benefits as follows: according to the different signal formats, different delaying time durations are set; on the basis of an initial switching time, according to the delaying time duration of a currently-switched signal format, switching of the signal format is delayed; therefore, one matrix can ensure non-jittering switching of two or more different signal formats.

The invention discloses a frequency band switching method and a frequency band switching system for a phase-locked loop, and the frequency band switching method and the frequency band switching system belong to the technical field of electronics. The frequency band switching method comprises the steps of judging a size relationship between a count value of a current output frequency of a voltage-controller oscillator and a count value of an expected frequency and adjusting the current output frequency band according to the size relationship so as to determine an upper frequency band and a lower frequency band, frequencies of which have the minimal difference value with the expected frequency; and comparing the size of difference values between the count value of the expected frequency andcount values of the frequencies of the upper frequency band and the lower frequency band under a fixed voltage so as to determine the frequency band, the frequency of which has the minimal differencevalue with the expected frequency, as the switching frequency band, and switching the current output frequency band to the switching frequency band. The system comprises a rated time pulse generator,a counter and a logic controller. The frequency band of the voltage-controller oscillator is adjusted in place by one step by utilizing the difference between the count value of the expected frequency and the count value of the oscillation frequency of the central frequency band of the voltage-controller oscillator under the fixed control voltage, thereby saving the frequency band switching time and increasing the switching speed of the frequency band.