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Patent Agency Ranking
公开(公告)号：US20170336889A1
公开(公告)日：2017-11-23
申请号：US15158843
申请日：2016-05-19
Applicant: Atmel Corporation
Inventor： Terje Saether , Carl Olof Fredrik Jonsson
IPC: G06F3/044
CPC classification number: G06F3/044 , G06F3/041 , G06F3/0412 , G06F3/0416
Abstract: An apparatus includes a driver circuit and a sensing system. The driver circuit includes an operational transconductance amplifier and a current mirror. The current mirror is coupled to the operational transconductance amplifier. The sensing system is coupled to the first current mirror. The sensing system is operable to detect a touch based on a change in capacitance at an electrode of a plurality of electrodes of a touch sensor.
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公开(公告)号：US09983749B2
公开(公告)日：2018-05-29
申请号：US15158843
申请日：2016-05-19
Applicant: Atmel Corporation
Inventor： Terje Saether , Carl Olof Fredrik Jonsson
CPC classification number: G06F3/044 , G06F3/041 , G06F3/0412 , G06F3/0416
Abstract: An apparatus includes a driver circuit and a sensing system. The driver circuit includes an operational transconductance amplifier and a current mirror. The current mirror is coupled to the operational transconductance amplifier. The sensing system is coupled to the first current mirror. The sensing system is operable to detect a touch based on a change in capacitance at an electrode of a plurality of electrodes of a touch sensor.
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公开(公告)号：US10180763B2
公开(公告)日：2019-01-15
申请号：US15966169
申请日：2018-04-30
Applicant: Atmel Corporation
Inventor： Terje Saether , Carl Olof Fredrik Jonsson
Abstract: A method includes driving, by a first driver circuit, a current through an electrode and detecting, by a sensing system, a touch based on a change in capacitance at the electrode. The first driver circuit includes a first operational transconductance amplifier and a first current mirror. A second current mirror is coupled to the sensing system. A first switch is coupled to the first current mirror. A second switch is coupled to the first current mirror and the first operational transconductance amplifier. A third switch is coupled to the first operational transconductance amplifier and the second current mirror. A fourth switch is coupled to the second current mirror. A fifth switch is coupled to the first operational transconductance amplifier. A sixth switch is coupled to the first operational transconductance amplifier. A seventh switch is coupled to the first operational transconductance amplifier, the first current mirror, and the second current mirror.
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公开(公告)号：US10955973B2
公开(公告)日：2021-03-23
申请号：US13864058
申请日：2013-04-16
Applicant: Atmel Corporation
Inventor： Gregory Brillant , Steinar Myren , Terje Saether
Abstract: In one embodiment, a method includes outputting a first current associated with a first electrode track of a self-capacitance touch sensor. The method also includes outputting a second current associated with a second electrode track of the self-capacitance touch sensor. The method also includes measuring a voltage associated with a difference between the first and second currents and determining a position of an object relative to the self-capacitance touch sensor based on the voltage.
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公开(公告)号：US20180253171A1
公开(公告)日：2018-09-06
申请号：US15966169
申请日：2018-04-30
Applicant: Atmel Corporation
Inventor： Terje Saether , Carl Olof Fredrik Jonsson
CPC classification number: G06F3/044 , G06F3/041 , G06F3/0412 , G06F3/0416
Abstract: A method includes driving, by a first driver circuit, a current through an electrode and detecting, by a sensing system, a touch based on a change in capacitance at the electrode. The first driver circuit includes a first operational transconductance amplifier and a first current mirror. A second current mirror is coupled to the sensing system. A first switch is coupled to the first current mirror. A second switch is coupled to the first current mirror and the first operational transconductance amplifier. A third switch is coupled to the first operational transconductance amplifier and the second current mirror. A fourth switch is coupled to the second current mirror. A fifth switch is coupled to the first operational transconductance amplifier. A sixth switch is coupled to the first operational transconductance amplifier. A seventh switch is coupled to the first operational transconductance amplifier, the first current mirror, and the second current mirror.
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