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    Brownout avoidance
    23.
    发明授权
    Brownout avoidance 有权

    公开(公告)号：US09647489B2

    公开(公告)日：2017-05-09

    申请号：US14812904

    申请日：2015-07-29

    Applicant: Apple Inc.

    Inventor： Cyril De La Cropte De Chanterac ,  David A. Hardell ,  Matthew L. Semersky ,  Yehonatan Perez

    IPC: G06F1/32 ,  H02J9/00 ,  H02J7/00

    CPC classification number: H02J9/002 ,  H02J7/0029 ,  H02J2007/004

    Abstract: Examples of the disclosure are directed to methods of managing power of various modules of an electronic device to prevent the voltage of the battery from falling to an undervoltage lockout (UVLO) threshold. In some examples, software operating on the electronic device or an associated electronic device (e.g., a paired electronic device) may assign power budgets to one or more modules, thereby preventing each module from drawing its maximum current capacity and causing the battery's voltage level to fall to the UVLO threshold. In some examples, a pre-UVLO threshold (i.e., a threshold higher than the UVLO threshold) may be used to modify the states of one or more modules to save power as the voltage of the battery approaches the UVLO threshold, but before the device must be fully powered off.

    Electronic device power protection circuitry
    25.
    发明授权
    Electronic device power protection circuitry 有权

    公开(公告)号：US09329697B2

    公开(公告)日：2016-05-03

    申请号：US13629276

    申请日：2012-09-27

    Applicant: Apple Inc.

    Inventor： Rajarshi Paul ,  Yehonatan Perez ,  Stephen J. Hrinya ,  Eugene L. Shoykhet

    IPC: G05F3/02 ,  H02H3/18 ,  H02H7/20 ,  G06F3/02

    CPC classification number: G05F3/02 ,  G06F3/02 ,  H02H3/18 ,  H02H7/20 ,  H02H9/025 ,  H04W88/02

    Abstract: A host electronic device may be coupled to an accessory electronic device. During normal operation, the host device may supply the accessory device with power over a power supply line. Back-powering events in which the accessory device delivers power to the host device may be prevented by interposing a protection transistor in the power supply line. A current mirror may be formed using the protection transistor and an additional transistor that produces a sense current proportional to the amount of current that is flowing through the power supply line. A current-to-voltage amplifier may produce a sense voltage that is proportional to the sense current. A bias circuit may be used to bias the sense current through the current mirror. A control circuit may compare the sense voltage to one or more reference voltages and turn off the protection transistor when appropriate to prevent back-powering of the host device.

    Apparatuses and methods for operating a portable electronic device to conduct mobile payment transactions
    26.
    发明授权
    Apparatuses and methods for operating a portable electronic device to conduct mobile payment transactions 有权
    用于操作便携式电子设备进行移动支付交易的装置和方法

    公开(公告)号：US09299072B2

    公开(公告)日：2016-03-29

    申请号：US14475263

    申请日：2014-09-02

    Applicant: Apple Inc.

    Inventor： Ahmer A. Khan ,  Gregory B. Novick ,  Jerrold V. Hauck ,  Saket R. Vora ,  Yehonatan Perez

    IPC: G06K5/00 ,  G06Q20/32 ,  G06Q20/38

    CPC classification number: G06Q20/3227 ,  G06Q20/32 ,  G06Q20/3278 ,  G06Q20/352 ,  G06Q20/353 ,  G06Q20/367 ,  G06Q20/382 ,  G06Q20/4018 ,  G06Q20/4097 ,  G06Q20/40975

    Abstract: Methods for operating a portable electronic device to conduct a mobile payment transaction at a merchant terminal are provided. The electronic device may verify that the current user of the device is indeed the authorized owner by requiring the current user to enter a passcode. If the user is able to provide the correct passcode, the device is only partly ready to conduct a mobile payment. In order for the user to fully activate the payment function, the user may have to supply a predetermined payment activation input such as a double button press that notifies the device that the user intends to perform a financial transaction in the immediate future. The device may subsequently activate a payment applet for a predetermined period of time during which the user may hold the device within a field of the merchant terminal to complete a near field communications based mobile payment transaction.

    Abstract translation: 提供了用于操作便携式电子设备以在商务终端进行移动支付交易的方法。 电子设备可以通过要求当前用户输入密码来验证设备的当前用户确实是授权所有者。 如果用户能够提供正确的密码，则该设备仅部分准备进行移动支付。 为了使用户能够完全启动支付功能，用户可能必须提供预定的支付激活输入，例如双按钮按钮，以在不久的将来通知设备用户打算执行金融交易。 该设备随后可以在预定的时间段内激活支付小应用程序，在该预定时间段期间，用户可以将该设备保存在商家终端的字段内，以完成基于近场通信的移动支付交易。

    Using pulsed DC to detect connector mating and unmating
    27.
    发明授权
    Using pulsed DC to detect connector mating and unmating 有权
    使用脉冲直流电来检测连接器的接合和脱离

    公开(公告)号：US09030208B2

    公开(公告)日：2015-05-12

    申请号：US13762224

    申请日：2013-02-07

    Applicant: Apple Inc.

    Inventor： Eugene L. Shoykhet ,  Brian C. Menzel ,  Yehonatan Perez ,  Joseph R. Fisher, Jr. ,  Jahan C. Minoo ,  Kevin M. Keeler

    IPC: G06F13/40

    CPC classification number: G06F13/4081

    Abstract: Techniques for detecting mating and un-mating of a first connector with a second connector include providing a pulsed voltage signal at a contact of the second connector and measuring a rate of rise of voltage at the contact. If the measured voltage at the contact exceeds a threshold voltage during the time the pulsed voltage signal is applied, then it is concluded that the first connector is not present and not mated with the second connector. If the measured voltage is lower than or equal to the threshold voltage during the time of application of the voltage pulse, it is concluded that the first connector is present and mated with the second connector.

    Abstract translation: 用于检测第一连接器与第二连接器的配合和不匹配的技术包括在第二连接器的接触处提供脉冲电压信号并测量接触处的电压上升率。 如果在施加脉冲电压信号的时间内接触点处的测量电压超过阈值电压，则得出结论，第一连接器不存在并且不与第二连接器配合。 如果在施加电压脉冲期间测量的电压低于或等于阈值电压，则得出结论，第一连接器存在并与第二连接器配合。

    Electronic device power protection circuitry
    28.
    发明申请
    Electronic device power protection circuitry 有权
    电子设备电源保护电路

    公开(公告)号：US20130335057A1

    公开(公告)日：2013-12-19

    申请号：US13629276

    申请日：2012-09-27

    Applicant: APPLE INC.

    Inventor： Rajarshi Paul ,  Yehonatan Perez ,  Stephen J. Hrinya ,  Eugene L. Shoykhet

    IPC: G05F3/02 ,  H02H7/20

    CPC classification number: G05F3/02 ,  G06F3/02 ,  H02H3/18 ,  H02H7/20 ,  H02H9/025 ,  H04W88/02

    Abstract: A host electronic device may be coupled to an accessory electronic device. During normal operation, the host device may supply the accessory device with power over a power supply line. Back-powering events in which the accessory device delivers power to the host device may be prevented by interposing a protection transistor in the power supply line. A current mirror may be formed using the protection transistor and an additional transistor that produces a sense current proportional to the amount of current that is flowing through the power supply line. A current-to-voltage amplifier may produce a sense voltage that is proportional to the sense current. A bias circuit may be used to bias the sense current through the current mirror. A control circuit may compare the sense voltage to one or more reference voltages and turn off the protection transistor when appropriate to prevent back-powering of the host device.

    Abstract translation: 主机电子设备可以耦合到辅助电子设备。 在正常操作期间，主机设备可以通过电源线向附件设备供电。 可以通过在电源线中插入保护晶体管来防止附件设备向主机设备传送电力的反向供电事件。 可以使用保护晶体管和产生与流过电源线的电流量成比例的感测电流的附加晶体管来形成电流镜。 电流 - 电压放大器可以产生与感测电流成正比的感测电压。 可以使用偏置电路来将感测电流偏置通过电流镜。 控制电路可以将感测电压与一个或多个参考电压进行比较，并且在适当时关闭保护晶体管以防止主机设备的反向供电。

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