Synaptics‘s patented processing system utilizes charge integrators and amplifiers to generate spatial common mode estimates and feedback signals from capacitive sensor electrodes. The system effectively mitigates spatial common mode components and residual noise, enhancing sensor performance. GlobalData’s report on Synaptics gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Synaptics, Wearable computers was a key innovation area identified from patents. Synaptics's grant share as of February 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.

Capacitive sensor processing system with spatial common mode estimation

Source: United States Patent and Trademark Office (USPTO). Credit: Synaptics Inc

A recently granted patent (Publication Number: US11914820B2) discloses a processing system designed to enhance signal processing in capacitive sensor electrodes. The system includes an amplifier that generates a spatial common mode estimate and feedback signals from spatial-common-mode-processed signals. A series of charge integrators work to mitigate spatial common mode and residual noise components in resulting signals obtained from capacitive sensor electrodes. A string of resistors and a switch array connected to the amplifier's output help select feedback signals, with a controller determining the spatial common mode estimate from the resistors' center tap.

Furthermore, the patent details a method associated with the processing system, emphasizing the generation of spatial common mode estimates and feedback signals to improve signal processing in capacitive sensor electrodes. The method involves obtaining resulting signals from the electrodes, generating spatial-common-mode-processed signals, and determining the spatial common mode estimate. The feedback signals, selectable by a switch array from nodes in the resistors, play a crucial role in mitigating spatial common mode and residual noise components. Additionally, the patent also covers an input device incorporating the processing system, amplifying the importance of spatial common mode estimates and feedback signals in enhancing signal processing efficiency in capacitive sensor electrodes.

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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.