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1. 发明授权

US09356960B2 Securing radio-frequency identification systems 有权
标题翻译：保护射频识别系统
公开(公告)号：US09356960B2
公开(公告)日：2016-05-31
申请号：US13290959
申请日：2011-11-07
申请人： Luben Hristov Hristov , Thomas Wenzel
发明人： Luben Hristov Hristov , Thomas Wenzel
IPC分类号： H04Q5/22 , H04L29/06 , H04W12/06
CPC分类号： H04L63/18 , H04W12/06
摘要： In one embodiment, a method includes, by a base station, communicating a challenge to a transponder through a first communication link; and establishing a second communication link with the transponder. The second communication link is a capacitive link. The method also includes receiving a first response to the challenge through the first communication link with the transponder; sampling the second communication link to detect a signal corresponding to a second response to the challenge from the transponder; receiving the second response through the second communication link; and authorizing the transponder based on the first and second responses.
摘要翻译：在一个实施例中，一种方法包括由基站通过第一通信链路向应答器传送挑战; 以及与所述应答器建立第二通信链路。第二通信链路是电容性链路。该方法还包括通过与应答器的第一通信链路接收对挑战的第一响应; 对所述第二通信链路进行采样以从所述应答器检测对应于对所述挑战的第二响应的信号; 通过第二通信链路接收第二响应; 并基于第一和第二个响应来授权转发器。

2. 发明授权

US10222912B2 Touch sensor with touch object discrimination 有权
公开(公告)号：US10222912B2
公开(公告)日：2019-03-05
申请号：US13226059
申请日：2011-09-06
申请人： Luben Hristov Hristov , Stephan Thaler
发明人： Luben Hristov Hristov , Stephan Thaler
IPC分类号： G06F3/045 , G06F3/044
摘要： In one embodiment, a method includes conducting a first signal to a first source electrode external to a touch sensor. The first source electrode is capacitively coupled to the touch sensor through a touch object. The method further includes measuring a mutual capacitance between the first source electrode and the first measuring electrode. The method further includes identifying, based at least in part on the measured mutual capacitance and using a controller of the touch sensor, the touch object touching the touch sensor at a detected touch position.

3. 发明申请

US20150002445A1 Common Mode Noise Suppression During Hovering and Proximity Detection 有权
标题翻译：悬停和接近检测期间的共模噪声抑制
公开(公告)号：US20150002445A1
公开(公告)日：2015-01-01
申请号：US13930454
申请日：2013-06-28
申请人： Samuel Brunet , Richard Paul Collins , Luben Hristov Hristov , Steinar Myren , Trond Jarle Pedersen , Paul Stavely
发明人： Samuel Brunet , Richard Paul Collins , Luben Hristov Hristov , Steinar Myren , Trond Jarle Pedersen , Paul Stavely
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0418
摘要： In one embodiment, a touch sensor includes a touch screen having a plurality of electrodes and a controller. The controller is operable to detect that an object is in proximity to the touch screen by measuring capacitance values from a reference area of the touch screen, determining a reference capacitance value using the measured capacitance values from the reference area, measuring capacitance values from a main area of the touch screen, and suppressing noise from the measured capacitance values of the main area by subtracting the reference capacitance value from the measured capacitance values of the main area of the touch screen. The reference area includes two or more of the plurality of electrodes, and at least one of the electrodes of the reference area is electrically coupled to a voltage reference. The main area includes electrodes of the plurality of electrodes that are not in the reference area.
摘要翻译：在一个实施例中，触摸传感器包括具有多个电极和控制器的触摸屏。控制器可操作以通过测量来自触摸屏的参考区域的电容值来检测物体在触摸屏附近，使用来自参考区域的测量电容值确定参考电容值，测量来自主体的电容值区域，并且通过从测量的触摸屏主区域的电容值减去参考电容值来抑制来自主区域的测量电容值的噪声。参考区域包括多个电极中的两个或更多个，并且参考区域的至少一个电极电耦合到电压基准。主区域包括不在参考区域中的多个电极的电极。

4. 发明申请

US20130027061A1 Measuring Voltage 有权
标题翻译：测量电压
公开(公告)号：US20130027061A1
公开(公告)日：2013-01-31
申请号：US13194282
申请日：2011-07-29
申请人： Luben Hristov Hristov
发明人： Luben Hristov Hristov
IPC分类号： G01R27/26
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044 , H03K17/9622 , H03K2217/96073
摘要： In one embodiment, a method includes, at a first input of a comparator, receiving from an analog multiplexer one of multiple first voltages. Each of the first voltages results at least in part from an interaction between an object and an electrode of each of one or more nodes of a capacitive touch sensor. The method includes, at a second input of the comparator, receiving a second voltage across a measurement capacitor that has a first terminal coupled to the second input of the comparator. The method includes charging the measurement capacitor at least in part through a measurement resistor coupled in series to the first terminal of the measurement capacitor and monitoring an output of the comparator during the charging of the measurement capacitor. The output of the comparator changes state when the second voltage becomes approximately equal to or greater than the one of the first voltages. The method includes determining an amount of time from a start of the charging of the measurement capacitor to a change in state of the output of the comparator.
摘要翻译：在一个实施例中，一种方法包括：在比较器的第一输入处，从模拟多路复用器接收多个第一电压中的一个。第一电压中的每一个至少部分地源于电容式触摸传感器的一个或多个节点中的每一个的物体和电极之间的相互作用。该方法包括在比较器的第二输入端处接收跨越测量电容器的第二电压，该测量电容器具有耦合到比较器的第二输入端的第一端子。该方法包括至少部分地通过与测量电容器的第一端子串联耦合的测量电阻器来对测量电容器进行充电，并且在测量电容器的充电期间监视比较器的输出。当第二电压变得大致等于或大于第一电压中的一个时，比较器的输出改变状态。该方法包括确定从测量电容器的充电开始到比较器的输出状态变化的时间量。

5. 发明授权

US09372582B2 Self-capacitance measurement 有权
标题翻译：自电容测量
公开(公告)号：US09372582B2
公开(公告)日：2016-06-21
申请号：US13451352
申请日：2012-04-19
申请人： Samuel Brunet , Bernard J. Hermes , Trond Jarle Pedersen , Luben Hristov Hristov , Shahrooz Shahparnia , Vivek Pant
发明人： Samuel Brunet , Bernard J. Hermes , Trond Jarle Pedersen , Luben Hristov Hristov , Shahrooz Shahparnia , Vivek Pant
IPC分类号： G06F3/044 , H03K17/96
CPC分类号： G06F3/044 , H03K17/9622 , H03K2217/960725 , H03K2217/960745
摘要： In one embodiment, a method includes modifying an amount of charge of a capacitance of a touch sensor. The modified amount of charge resulting in a voltage at the capacitance being a first pre-determined voltage level. The method also includes applying a first pre-determined amount of charge to the capacitance. The application of the first pre-determined amount of charge to the capacitance modifying the voltage at the capacitance from the first pre-determined voltage level to a first charging voltage level. The method also includes determining a first difference between the first charging voltage level and a reference voltage level; and determining whether a touch input to the touch sensor has occurred based on the first difference.
摘要翻译：在一个实施例中，一种方法包括修改触摸传感器的电容的电荷量。改变的电荷量导致电容处的电压是第一预定电压电平。该方法还包括将第一预定量的电荷施加到电容。将第一预定量的电荷施加到将电容处的电压从第一预定电压电平修改为第一充电电压电平的电容。该方法还包括确定第一充电电压电平和参考电压电平之间的第一差值; 以及基于所述第一差异来确定是否已经发生对所述触摸传感器的触摸输入。

6. 发明授权

US08754659B2 Current mirror self-capacitance measurement 有权
公开(公告)号：US08754659B2
公开(公告)日：2014-06-17
申请号：US13445748
申请日：2012-04-12
申请人： Samuel Brunet , Luben Hristov Hristov , Trond Jarle Pedersen , Iqbal Sharif
发明人： Samuel Brunet , Luben Hristov Hristov , Trond Jarle Pedersen , Iqbal Sharif
IPC分类号： G01R27/26
摘要： In one embodiment, a method includes applying a first current to a capacitance of a touch sensor. The application of the first current to the capacitance for a first amount of time modifies the voltage at the capacitance from the reference voltage level to a first pre-determined voltage level. The method also includes applying a second current to an integration capacitor. The second current is proportional to the first current. The application of the second current to the integration capacitor for the first amount of time modifies the voltage at the integration capacitor from the reference voltage level to a first charging voltage level. The method also includes determining whether a touch input to the touch sensor has occurred based on the first charging voltage level.

7. 发明申请

US20130271163A1 Current Mirror Self-Capacitance Measurement 有权
标题翻译：电流镜电容测量
公开(公告)号：US20130271163A1
公开(公告)日：2013-10-17
申请号：US13445748
申请日：2012-04-12
申请人： Samuel Brunet , Luben Hristov Hristov , Trond Jarle Pedersen , Iqbal Sharif
发明人： Samuel Brunet , Luben Hristov Hristov , Trond Jarle Pedersen , Iqbal Sharif
IPC分类号： G01R27/26
CPC分类号： G06F3/044 , H03K17/962 , H03K2217/960725 , H03K2217/960755 , H03K2217/960775
摘要： In one embodiment, a method includes applying a first current to a capacitance of a touch sensor. The application of the first current to the capacitance for a first amount of time modifies the voltage at the capacitance from the reference voltage level to a first pre-determined voltage level. The method also includes applying a second current to an integration capacitor. The second current is proportional to the first current. The application of the second current to the integration capacitor for the first amount of time modifies the voltage at the integration capacitor from the reference voltage level to a first charging voltage level. The method also includes determining whether a touch input to the touch sensor has occurred based on the first charging voltage level.
摘要翻译：在一个实施例中，一种方法包括将第一电流施加到触摸传感器的电容。将第一电流施加到第一时间量的电容，将电容处的电压从参考电压电平修改为第一预定电压电平。该方法还包括将第二电流施加到积分电容器。第二电流与第一电流成比例。将第二电流施加到积分电容器的第一时间量将积分电容器处的电压从参考电压电平改变到第一充电电压电平。该方法还包括基于第一充电电压电平确定触摸传感器的触摸输入是否已经发生。

8. 发明申请

US20130181934A1 System And Method For Reducing The Effects Of Parasitic Capacitances 有权
标题翻译：降低寄生电容效应的系统和方法
公开(公告)号：US20130181934A1
公开(公告)日：2013-07-18
申请号：US13351597
申请日：2012-01-17
申请人： Samuel Brunet , Luben Hristov Hristov
发明人： Samuel Brunet , Luben Hristov Hristov
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0416
摘要： In one embodiment, a method includes discharging a first capacitor and discharging a set of capacitances present on a first set of lines of a touch sensor. After discharging the first capacitor and the set of capacitances, the method further includes causing charge to be transferred to the set of capacitances during a first time period. After the first time period, the method includes causing charge to be transferred to the first capacitor and the set of capacitances during a second time period. After the second time period, the voltage across the first capacitor to a first threshold is compared. The method also includes determining whether a touch was detected by the touch sensor based on comparing the voltage across the first capacitor to the first threshold.
摘要翻译：在一个实施例中，一种方法包括对第一电容器进行放电并放电存在于触摸传感器的第一组线路上的一组电容。在放电第一电容器和电容器组之后，该方法还包括在第一时间段期间使电荷转移到该组电容。在第一时间段之后，该方法包括在第二时间段期间使电荷转移到第一电容器和电容组。在第二时间段之后，比较第一电容器两端的电压到第一阈值。该方法还包括基于将第一电容器两端的电压与第一阈值进行比较来确定触摸传感器是否检测到触摸。

9. 发明授权

US08624607B2 Measuring voltage 有权
标题翻译：测量电压
公开(公告)号：US08624607B2
公开(公告)日：2014-01-07
申请号：US13194282
申请日：2011-07-29
申请人： Luben Hristov Hristov
发明人： Luben Hristov Hristov
IPC分类号： G01R27/26
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044 , H03K17/9622 , H03K2217/96073
摘要： In one embodiment, a method includes, at a first input of a comparator, receiving from an analog multiplexer one of multiple first voltages. Each of the first voltages results at least in part from an interaction between an object and an electrode of each of one or more nodes of a capacitive touch sensor. The method includes, at a second input of the comparator, receiving a second voltage across a measurement capacitor that has a first terminal coupled to the second input of the comparator. The method includes charging the measurement capacitor at least in part through a measurement resistor coupled in series to the first terminal of the measurement capacitor and monitoring an output of the comparator during the charging of the measurement capacitor. The output of the comparator changes state when the second voltage becomes approximately equal to or greater than the one of the first voltages. The method includes determining an amount of time from a start of the charging of the measurement capacitor to a change in state of the output of the comparator.
摘要翻译：在一个实施例中，一种方法包括：在比较器的第一输入处，从模拟多路复用器接收多个第一电压中的一个。第一电压中的每一个至少部分地源于电容式触摸传感器的一个或多个节点中的每一个的物体和电极之间的相互作用。该方法包括在比较器的第二输入端处接收跨越测量电容器的第二电压，该测量电容器具有耦合到比较器的第二输入端的第一端子。该方法包括至少部分地通过与测量电容器的第一端子串联耦合的测量电阻器来对测量电容器进行充电，并且在测量电容器的充电期间监视比较器的输出。当第二电压变得大致等于或大于第一电压中的一个时，比较器的输出改变状态。该方法包括确定从测量电容器的充电开始到比较器的输出状态变化的时间量。

10. 发明申请

US20130278538A1 Self-Capacitance Measurement 有权
标题翻译：自电容测量
公开(公告)号：US20130278538A1
公开(公告)日：2013-10-24
申请号：US13451352
申请日：2012-04-19
申请人： Samuel Brunet , Bernard J. Hermes , Trond Jarle Pedersen , Luben Hristov Hristov , Shahrooz Shahparnia , Vivek Pant
发明人： Samuel Brunet , Bernard J. Hermes , Trond Jarle Pedersen , Luben Hristov Hristov , Shahrooz Shahparnia , Vivek Pant
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , H03K17/9622 , H03K2217/960725 , H03K2217/960745
摘要： In one embodiment, a method includes modifying an amount of charge of a capacitance of a touch sensor. The modified amount of charge resulting in a voltage at the capacitance being a first pre-determined voltage level. The method also includes applying a first pre-determined amount of charge to the capacitance. The application of the first pre-determined amount of charge to the capacitance modifying the voltage at the capacitance from the first pre-determined voltage level to a first charging voltage level. The method also includes determining a first difference between the first charging voltage level and a reference voltage level; and determining whether a touch input to the touch sensor has occurred based on the first difference.
摘要翻译：在一个实施例中，一种方法包括修改触摸传感器的电容的电荷量。改变的电荷量导致电容处的电压是第一预定电压电平。该方法还包括将第一预定量的电荷施加到电容。将第一预定量的电荷施加到将电容处的电压从第一预定电压电平修改为第一充电电压电平的电容。该方法还包括确定第一充电电压电平和参考电压电平之间的第一差值; 以及基于所述第一差异来确定是否已经发生对所述触摸传感器的触摸输入。

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