The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2025
Filed:
Dec. 05, 2024
Stmicroelectronics International N.v., Geneva, CH;
Tong Tee Tan, Singapore, SG;
Abstract
According to an embodiment, a signal processing circuit includes a coefficient accumulator and dual multiplexer paths for handling invalid ADC samples in touch controllers. When ADC samples exceed a saturation threshold, the circuit selects zero values through one multiplexer while accumulating coefficients through another multiplexer path. Upon receiving a first valid sample, the circuit multiplies it with accumulated coefficients before resuming normal coefficient processing. The architecture enables continuous processing across multiple touch sensor channels without buffering requirements while maintaining mathematical equivalence through the distributive property of multiplication.