Current-based charge compensation in a touch sensor

In one embodiment, a method comprises generating a first current at a current source having a magnitude based on the magnitude of a second current flowing from a capacitive node of a touch sensor in the absence of a touch with respect to the capacitive node. The method further includes generating a...

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1. Verfasser:	JONSSON CARL OLOF FREDRIK
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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creator	JONSSON CARL OLOF FREDRIK
description	In one embodiment, a method comprises generating a first current at a current source having a magnitude based on the magnitude of a second current flowing from a capacitive node of a touch sensor in the absence of a touch with respect to the capacitive node. The method further includes generating a third current from the capacitive node of the touch sensor in the presence of a touch with respect to the capacitive node. The first current and the third current are summed to cancel out at least a portion of the third current. The method further includes integrating, by an integrator, the sum of the first current and the third current to generate an output voltage.
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The method further includes generating a third current from the capacitive node of the touch sensor in the presence of a touch with respect to the capacitive node. The first current and the third current are summed to cancel out at least a portion of the third current. The method further includes integrating, by an integrator, the sum of the first current and the third current to generate an output voltage.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; TESTING</subject><creationdate>2016</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160301&DB=EPODOC&CC=US&NR=9274152B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160301&DB=EPODOC&CC=US&NR=9274152B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>JONSSON CARL OLOF FREDRIK</creatorcontrib><title>Current-based charge compensation in a touch sensor</title><description>In one embodiment, a method comprises generating a first current at a current source having a magnitude based on the magnitude of a second current flowing from a capacitive node of a touch sensor in the absence of a touch with respect to the capacitive node. The method further includes generating a third current from the capacitive node of the touch sensor in the presence of a touch with respect to the capacitive node. The first current and the third current are summed to cancel out at least a portion of the third current. The method further includes integrating, by an integrator, the sum of the first current and the third current to generate an output voltage.</description><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>MEASURING</subject><subject>MEASURING ELECTRIC VARIABLES</subject><subject>MEASURING MAGNETIC VARIABLES</subject><subject>PHYSICS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDB2Li0qSs0r0U1KLE5NUUjOSCxKT1VIzs8tSM0rTizJzM9TyMxTSFQoyS9NzlAoBgrmF_EwsKYl5hSn8kJpbgYFN9cQZw_d1IL8-NTigsTk1LzUkvjQYEsjcxNDUyMnI2MilAAApsssJg</recordid><startdate>20160301</startdate><enddate>20160301</enddate><creator>JONSSON CARL OLOF FREDRIK</creator><scope>EVB</scope></search><sort><creationdate>20160301</creationdate><title>Current-based charge compensation in a touch sensor</title><author>JONSSON CARL OLOF FREDRIK</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US9274152B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2016</creationdate><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>MEASURING</topic><topic>MEASURING ELECTRIC VARIABLES</topic><topic>MEASURING MAGNETIC VARIABLES</topic><topic>PHYSICS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>JONSSON CARL OLOF FREDRIK</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>JONSSON CARL OLOF FREDRIK</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Current-based charge compensation in a touch sensor</title><date>2016-03-01</date><risdate>2016</risdate><abstract>In one embodiment, a method comprises generating a first current at a current source having a magnitude based on the magnitude of a second current flowing from a capacitive node of a touch sensor in the absence of a touch with respect to the capacitive node. The method further includes generating a third current from the capacitive node of the touch sensor in the presence of a touch with respect to the capacitive node. The first current and the third current are summed to cancel out at least a portion of the third current. The method further includes integrating, by an integrator, the sum of the first current and the third current to generate an output voltage.</abstract><oa>free_for_read</oa></addata></record>
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subjects	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
title	Current-based charge compensation in a touch sensor
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