Invention Grant
- Patent Title: Interference reduction circuit for touch system
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Application No.: US15499290Application Date: 2017-04-27
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Publication No.: US10423277B2Publication Date: 2019-09-24
- Inventor: Srinath Hosur , Ashish Khandelwal , Charles M. Branch
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Ebby Abraham; Charles A. Brill; Frank D. Cimino
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A circuit includes a receiver that includes an input stage to receive a touch signal from a touch system. A noise reduction circuit that samples the touch signal to detect a noise signal in the touch signal. The noise reduction circuit generates a reduction signal based on the noise signal that is fed back to the input stage of the receiver to mitigate noise interference of the noise signal with respect to the touch signal at the receiver.
Public/Granted literature
- US20180188888A1 INTERFERENCE REDUCTION CIRCUIT FOR TOUCH SYSTEM Public/Granted day:2018-07-05
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