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US Patent 8648830 Noise reduction in digitizer system

Patent 8648830 was granted and assigned to N-Trig on February, 2014 by the United States Patent and Trademark Office.

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Patent attributes

Patent Applicant
N-Trig
N-Trig
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Current Assignee
N-Trig
N-Trig
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
0
Patent Number
86488300
Patent Inventor Names
Ori Rimon0
Haim Perski0
Date of Patent
February 11, 2014
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Patent Application Number
136443310
Date Filed
October 4, 2012
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Patent Primary Examiner
‌
Pegeman Karimi
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Patent abstract

A method for noise reduction in a digitizer includes determining a location of a stylus with a known frequency of emission over a first sampling period, sampling output from a plurality of detecting elements over a second sampling period, identifying detecting elements with sampled output in the second sampling period above a defined threshold in a selected frequency, the selected frequency being close to but different than the known frequency of the stylus, selecting as a candidate carrier of mere noise a detecting element from the detecting elements identified that is spaced away from the determined location of the stylus, and reducing values of output sampled over the second sampling period from at least one other detecting element, in accordance with the output sampled over the second sampling period from the detecting element selected as the candidate carrier of mere noise.

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