Revvity has filed a patent for a method of filtering a sensor signal. The method involves using a time-discrete filter to continuously filter the input signal in the time domain. The filter compares the specified signal value with two further signal values and replaces the specified signal value in the output signal based on the value interval spanned by the two further signal values. GlobalData’s report on Revvity gives a 360-degree view of the company including its patenting strategy.
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According to GlobalData’s company profile on Revvity, laboratory automation robots was a key innovation area identified from patents. Revvity's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Method for filtering a sensor signal using time-discrete filter
A recently filed patent (Publication Number: US20230202052A1) describes a method and device for filtering a sensor signal. The method involves using a time-discrete filter to continuously filter the input signal in the time domain. The filter compares a specified signal value of the input signal with two further signal values. If the specified signal value lies within the value interval spanned by the two further signal values, it is retained unchanged. If not, it is replaced with a new value. The new value is determined based on the two further signal values, either as the mean value of the two further signal values or as one of the two further signal values with a smaller deviation from the specified value.
The patent also describes a device for controlling an actuator using the filtered sensor signal. The device includes a sensor for acquiring an analogue sensor signal, a converter for providing the analogue sensor signal as a time-discrete sensor signal, a computing unit for receiving the input signal, and an actuator. The computing unit generates an output signal by continuously filtering the input signal using the time-discrete filter. The filter compares a specified signal value of the input signal with two further signal values and replaces the specified signal value in the output signal with a new value if it is not within the value interval spanned by the two further signal values. The device also includes a mechanism for detecting an event based on a significant signal change in the output signal and outputting a control signal to the actuator upon detection of the event. The control signal can be a signal to activate or stop the actuator.
Overall, this patent presents a method and device for effectively filtering a sensor signal and controlling an actuator based on the filtered signal. The use of a time-discrete filter and the determination of a new value based on the comparison of signal values contribute to accurate filtering and event detection. The device can be particularly useful in applications where precise control of an actuator is required based on sensor input.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies
