Comet has been granted a patent for a device that synchronizes a high frequency power signal with an external reference signal. The device includes a phase control circuit and a digital oscillator circuit, which generates the power signal based on the control signal from the phase control circuit. The phase control circuit determines the phase difference between the power signal and the external reference signal. GlobalData’s report on Comet gives a 360-degree view of the company including its patenting strategy. Buy the report here.

Grant share is based on the ratio of number of grants to total number of patents.

Synchronization device for frequency signal and external reference signal

Source: United States Patent and Trademark Office (USPTO). Credit: Comet Holding AG

A recently granted patent (Publication Number: US11777508B2) describes a device and method for synchronizing a frequency signal and an external reference signal. The device includes a phase control circuit and a digital oscillator circuit. The phase control circuit consists of a first counter for receiving the external reference signal and a second counter for receiving the frequency signal. The digital oscillator circuit includes a signal processing circuit that determines the phase difference between the frequency signal and the external reference signal.

The means for determining the phase difference in the device are configured to calculate the counting difference of the first and second counters. Additionally, the calculation of the counting difference is performed at the rising edge of a clock signal that is selected.

The method for synchronizing the frequency signal and the external reference signal involves several steps. First, the phase difference between the two signals is determined by calculating the counting difference of the first and second counters. Then, a frequency tuning word is generated and routed to the digital oscillator circuit. The frequency signal is generated at the digital oscillator circuit based on the frequency tuning word. Finally, the frequency signal is routed back to the phase control circuit for counting the frequency and phase of both signals.

Similar to the device, the method also includes calculating the counting difference of the first and second counters at the rising edge of a selected clock signal to determine the phase difference between the frequency signal and the external reference signal.

Overall, this patent presents a device and method for accurately synchronizing a frequency signal with an external reference signal. By utilizing counters and a signal processing circuit, the device can determine the phase difference between the two signals and generate a frequency tuning word for precise synchronization. The method outlines the steps involved in achieving this synchronization, including the calculation of the counting difference and the routing of the frequency signal. This technology could have applications in various fields where precise synchronization of signals is crucial.

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