Method and apparatus for simple pulse interpolation

Abstract

A simple pulse interpolation method and device, the method including the following processes: according to the pulse control signal arriving to the control end, on the one hand, the divider processes frequency-dividing on the natural frequency of the oscillator, on the other hand, a reversible counter chooses a counting method, and then, according to the determined counting mode and frequency-dividing result to process counting; after one cycle, T time, of the control end signal, and when next pulse control signal of the control end coming, the reversible counter chooses another counting mode, and meanwhile, the frequency divider re-divides the natural frequency of the oscillator, and then according to the determined counting mode and frequency-division result to process counting, until the configured value, and at this time outputting a narrow pulse signal. Therefore, the frequency and phase of the output pulse, and the phase of the control end maintain the configured relationship. The invention provides a simple pulse interpolation algorithm that can achieve locking phase and locking frequency effects, and without feedback and comparison process, and circuit structure is simple,response speed fast, and it has a broad application prospects.

Description

technical field [0001] The invention relates to a simple pulse interpolation method and device. Background technique [0002] At present, the conventional pulse interpolation method is often completed by using a Phase Locked Loop (Phase Locked Loop, PLL) technology. Using phase-locked loop technology, it is possible to obtain output pulses that are proportional to the input pulse frequency and have a constant phase difference. This feature is widely used in many fields such as communications, electronics, and measurement and control. [0003] Phase-locked loop technology, also known as automatic phase control technology, was developed in the 1930s. Its structure is as follows: figure 1 As shown, it is mainly composed of a phase detector (PD), a loop filter (LF), and a voltage-controlled oscillator (VCO). [0004] The basic principle is as follows: PD will input the signal S 1 (frequency f 1 , with a phase of φ 1 ) and the output signal S that has been multiplied / divided...

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Problems solved by technology

[0010] However, although it has excellent phase-locked-frequency-locked functions, the design involving phase-locked loop technology often faces problems such as complex circuit structure, loop instability, and output jitter.

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