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:
Mar. 10, 2026
Filed:
Sep. 05, 2024
Wacom Co., Ltd., Saitama, JP;
Takeshi Koike, Saitama, JP;
Haruhiko Hisano, Saitama, JP;
Wacom Co., Ltd., Saitama, JP;
Abstract
A reception circuit of a pen is provided. The reception circuit includes a differential circuit that detects edges of a signal received by the pen. The reception circuit includes a ΔΣ modulation unit that uses at least two reference potentials corresponding to positive and negative values, to compare an output signal of the differential circuit and the two reference potentials and that executes feedback processing of comparison results. The ΔΣ modulation unit uses two or more first comparators corresponding to positive values and two or more second comparators corresponding to negative values to execute folding modulation. The reception circuit includes a digital circuit that performs a correlation operation of an output signal of the ΔΣ modulation unit and known patterns to detect transmission data based on the signal.