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公开(公告)号：US20240302915A1
公开(公告)日：2024-09-12
申请号：US18595499
申请日：2024-03-05
Applicant: NXP B.V.
Inventor： Frederic Darthenay , Jean-Robert Tourret , Franck Goussin , Vincent Geffroy
CPC classification number: G06F3/0416 , G06F3/0446 , G06F2203/04111
Abstract: A touch panel includes a first plurality of electrodes and a second plurality of electrodes. A plurality of transmitters generate a plurality of transmit signals by modulating a common sine wave signal with a set of orthogonal modulation signals, and drive each transmit signal onto a corresponding electrode of the first plurality of electrodes. Each transmit signal is generated by modulating the common sine wave signal with a unique orthogonal modulation signal of the set of orthogonal modulation signals. At least two of the plurality of transmit signals are not orthogonal. Each receiver of a plurality of receivers senses a receive signal on a corresponding electrode of the second plurality of electrodes and generates a set of correlation signals by correlating the receive signal with each transmit signal of the plurality of transmit signals. The sets of correlation signals are used to detect a touch event on the touch panel.
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公开(公告)号：US09608599B2
公开(公告)日：2017-03-28
申请号：US14798933
申请日：2015-07-14
Applicant: NXP B.V.
Inventor： Jean-Robert Tourret
CPC classification number: H03H17/08 , H03D13/00 , H05B6/686 , H05B6/705 , H05B6/72 , Y02B40/143 , Y02B40/146
Abstract: An RF circuit and method for detecting the amount of phase shift applied to an RF signal. An RF heating apparatus including the RF circuit. The RF circuit includes a phase shifter operable to apply a phase shift to a reference signal to produce a phase shifted reference signal. The RF circuit also includes a phase detector operable to detect a phase difference between the phase shifted RF signal and the phase shifted reference signal. The phase detector has a reduced input range at a frequency of the phase shifted RF signal. The RF circuit further includes a controller operable to control the phase shifter to set the phase of the phase shifted reference signal so that the phase difference between the phase shifted RF signal and the phase shifted reference signal falls within the reduced input range of the phase detector.
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公开(公告)号：US09548751B2
公开(公告)日：2017-01-17
申请号：US14821481
申请日：2015-08-07
Applicant: NXP B.V.
Inventor： Jean-Robert Tourret
CPC classification number: H03L7/235 , H03L7/07 , H03L7/099 , H03L7/18 , H03L7/22 , H03L7/23 , H05B6/00
Abstract: An RF circuit for providing phase coherent signals, an RF heating apparatus comprising the RF circuit and a method for providing phase coherent signals in an RF circuit. The RF circuit has a first frequency synthesiser including a fractional-N phase locked loop and a second frequency synthesiser including an integer-N phase locked loop. An output of the first frequency synthesiser is connected to a phase frequency detector of the integer-N phase locked loop of the second frequency synthesiser via a synchronization signal divider for distributing a synchronization signal from the first frequency synthesiser to the second frequency synthesiser. The integer-N phase locked loop of the second frequency synthesiser comprises a frequency divider of the same modulus as the synchronization signal divider.
Abstract translation: 一种用于提供相位相干信号的RF电路，包括RF电路的RF加热装置和用于在RF电路中提供相位相干信号的方法。 RF电路具有包括N分相锁相环的第一频率合成器和包括整数N个锁相环的第二频率合成器。 第一频率合成器的输出经由用于将来自第一频率合成器的同步信号分配给第二频率合成器的同步信号分频器连接到第二频率合成器的整数N锁相环的相位频率检测器。 第二频率合成器的整数N锁相环包括与同步信号分频器相同模数的分频器。
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