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公开(公告)号：US11409972B2
公开(公告)日：2022-08-09
申请号：US16418933
申请日：2019-05-21
Applicant: Apple Inc.
Inventor： Vincent Chauvin , Peter M. Agboh , Vusthla Sunil Reddy , Xinping Zeng
Abstract: A device implementing a system for NFC communication with a second device includes an antenna and a processor configured to transmit a pulse signal for detection of another device within proximity of the device, and to detect, in conjunction with transmission of the pulse signal, that a first value of a measurement parameter of the antenna satisfies an initial detection factor. The processor is further configured, in response to the detection, to set a confirmation detection factor for the measurement parameter of the antenna based at least in part on the first value of the measurement parameter of the antenna, to transmit a confirmation pulse signal, and to initiate a second polling for reception of data from the other device when a second value of the measurement parameter of the antenna detected in conjunction with transmission of the confirmation pulse signal satisfies the confirmation detection factor.
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公开(公告)号：US11025347B2
公开(公告)日：2021-06-01
申请号：US16921421
申请日：2020-07-06
Applicant: Apple Inc.
Inventor： Xinping Zeng , Vusthla Sunil Reddy , Peter M. Agboh
IPC: H04B15/00 , H03H21/00 , H04B17/309 , H04B5/00
Abstract: Systems, methods, and devices are provided for compensating for distortion of a contactless communication channel. The electronic device may include a radio frequency system that itself includes antenna to transmit and receive data using near-field communication (NFC) and an NFC signal processing circuitry. The NFC signal processing circuitry may receive an NFC signal via a communication channel formed between the electronic device and another electronic device and may determine a baseband reference waveform associated with the electromagnetic NFC signal and may determine an error between a portion of the electromagnetic NFC signal and the baseband reference waveform. Furthermore, the NFC signal processing circuitry may determine whether the error is outside of an acceptable error threshold range and, in response to the error being outside of the acceptable error threshold range, train a filter response of the NFC signal processing circuitry to estimate the communication channel.
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Patent Agency Ranking
公开(公告)号：US11005533B2
公开(公告)日：2021-05-11
申请号：US16571027
申请日：2019-09-13
Applicant: Apple Inc.
Inventor： Vincent Chauvin , Peter M. Agboh , Vusthla Sunil Reddy , Xinping Zeng
Abstract: A device implementing a system for NFC communication includes a processor configured to receive, from an other device, pulse signals for detecting proximity of the device with the other device. The processor is further configured to determine an interval at which the pulse signals are received from the other device. The processor is further configured to determine a time when the other device is expected to transmit a subsequent pulse signal based at least in part on the determined interval. The processor is further configured to transmit a signal to the other device based on the determined time when the other device is expected to transmit the subsequent pulse signal.
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公开(公告)号：US10707972B1
公开(公告)日：2020-07-07
申请号：US16356774
申请日：2019-03-18
Applicant: Apple Inc.
Inventor： Xinping Zeng , Vusthla Sunil Reddy , Peter M. Agboh
IPC: H04B15/00 , H04B17/309 , H03H21/00 , H04B5/00
Abstract: Systems, methods, and devices are provided for compensating for distortion of a contactless communication channel. The electronic device may include a radio frequency system that itself includes antenna to transmit and receive data using near-field communication (NFC) and an NFC signal processing circuitry. The NFC signal processing circuitry may receive an NFC signal via a communication channel formed between the electronic device and another electronic device and may determine a baseband reference waveform associated with the electromagnetic NFC signal and may determine an error between a portion of the electromagnetic NFC signal and the baseband reference waveform. Furthermore, the NFC signal processing circuitry may determine whether the error is outside of an acceptable error threshold range and, in response to the error being outside of the acceptable error threshold range, train a filter response of the NFC signal processing circuitry to estimate the communication channel.
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公开(公告)号：US10340967B2
公开(公告)日：2019-07-02
申请号：US15716430
申请日：2017-09-26
Applicant: Apple Inc.
Inventor： Xinping Zeng , Mohit Narang , Peter M. Agboh , Vusthla Sunil Reddy
Abstract: A transceiver that allows dynamic high-pass filter (HPF) cut-off frequency adjustment may include a mixer circuit to mix a local oscillator (LO) signal with a receive (RX) signal received from a transmitter to generate a baseband signal. The transceiver may further include a high-pass filter (HPF) having an adjustable cut-off frequency that is used to reduce a DC offset of the baseband signal. A control circuit can dynamically control components of the HPF to set the adjustable cut-off frequency at a first frequency during a first time period and at a second frequency during a second time period.
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公开(公告)号：US20190098435A1
公开(公告)日：2019-03-28
申请号：US15716712
申请日：2017-09-27
Applicant: Apple Inc.
Inventor： Xinping Zeng , Peter M. Agboh , Vusthla Sunil Reddy
Abstract: An electronic device includes a transmitter configured to generate a signal. The electronic device also includes tuning circuitry coupled to the transmitter, wherein the tuning circuitry comprises a variable capacitance element and at least one fixed capacitance element having a fixed capacitance, wherein the variable capacitance element is configured to provide a dynamic capacitance based upon a voltage value related to a determined phase difference between the signal and a second signal, wherein the tuning circuitry is configured to adjust a frequency of the first signal to generate a tuned signal based upon a total capacitance comprising the fixed capacitance and the dynamic capacitance. The electronic device further includes an antenna coupled to the tuning circuitry and configured to generate an electromagnetic field based on the tuned signal.
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公开(公告)号：US09516493B2
公开(公告)日：2016-12-06
申请号：US14712805
申请日：2015-05-14
Applicant: Apple Inc.
Inventor： Adam T. Dohner , Ruben Caballero , Mohit Narang , Xinping Zeng , Vusthla Sunil Reddy , Peter M. Agboh
CPC classification number: H04W8/22 , H04R29/00 , H04R2410/00 , H04W4/02 , H04W4/80
Abstract: This application relates to systems, methods, and apparatus for testing operability of a mobile device with a reader device. In some embodiments, a testing system is set forth for automatically placing the mobile device proximate to the reader device in order to initiate a wireless transaction between the mobile device and the reader device. Depending on whether the mobile device is determined to be operable with the reader device, the testing system can automatically place the mobile device proximate to another reader device for testing. In this way, reductions in testing time can be manifested as a result of automating the testing process.
Abstract translation: 本申请涉及用于测试具有读取器设备的移动设备的可操作性的系统，方法和设备。 在一些实施例中，提出了一种用于将移动设备自动放置在靠近读取器设备的测试系统，以便发起移动设备和读取器设备之间的无线交易。 取决于移动设备是否被确定为与读取器设备可操作，测试系统可以自动将移动设备放置在另一个读取器设备附近进行测试。 以这种方式，测试时间的缩短可以表现为自动化测试过程的结果。
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