ON Semiconductor has been granted a patent for a filter designed for propagation delay compensation and interpolation in encoder digital signal processing. The circuit includes multiple filters and differentiators to reduce noise and calculate speed and acceleration, resulting in a precise digital output. GlobalData’s report on ON Semiconductor gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on ON Semiconductor, was a key innovation area identified from patents. ON Semiconductor's grant share as of February 2024 was 75%. Grant share is based on the ratio of number of grants to total number of patents.
Filter for propagation delay compensation and interpolation in encoder
A recently granted patent (Publication Number: US11929757B2) discloses a propagation delay compensation circuit designed to enhance the accuracy of measuring angular positions of rotating objects. The circuit comprises three main circuits - the first circuit filters noise from a digital input, calculates speed, the second circuit filters noise from the speed, calculates acceleration, and the third circuit filters noise from acceleration to calculate a propagation delay compensated digital output. An extrapolation generator is included to compute an extrapolated angular position, and a pre-processing block ensures the received digital input is within an acceptable range before processing.
In addition to the propagation delay compensation circuit, the patent also describes a system incorporating a sensor to measure angular positions, an analog to digital converter, and an analog signal processor to process electrical signals. A digital signal processor is utilized to process digital signals, ensuring accurate measurements for the propagation delay compensation circuit. The method outlined in the patent involves receiving a digital input, comparing measured and previously calculated angular positions, and replacing invalid measurements with extrapolated values to calculate speed, acceleration, and ultimately a propagation delay compensated digital output. The method also includes provisions for handling missing data and sending the compensated output to a controller for further processing.
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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 across the world’s largest industries.
