US Patent 7764200 Capacitive button device
Patent 7764200 was granted and assigned to Holtek Semiconductor Inc. on July, 2010 by the United States Patent and Trademark Office.
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Patent abstract
The present invention discloses a capacitive button device, comprising: a signal input unit, a first amplifier, a first switching unit, a second amplifier, a second switching unit, an analog-to-digital converting unit, a third switching unit, a data output unit, a data storage unit and a digital-to-analog converting unit. Thereby, the present invention overcomes the problem due to poor resolution of conventional capacitive buttons and can be used with touch panels. Moreover, the digital-to-analog converting unit is downsized with improved resolution and reduced cost in design and fabrication.
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US Patent 07764200 Capacitive button device US Patent 7764200 Capacitive button device
Infobox
Patent Number
0776420000
Patent Number
776420000
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
077642000
Date of Patent
July 27, 2010
0Patent Application Number
121236090
Date Filed
May 20, 2008
0Official Website
Patent Primary Examiner
Edits on 22 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
077642000
Date of Patent
July 27, 2010
0Patent Application Number
121236090
Date Filed
May 20, 2008
0Official Website
Patent Primary Examiner
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US Patent 07764200 Capacitive button device
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07764200
Date of patent
July 27, 2010
Patent application number
12123609
Date Filed
May 20, 2008
Patent primary examiner
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