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公开(公告)号：US20160320788A1
公开(公告)日：2016-11-03
申请号：US15143321
申请日：2016-04-29
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Yehonatan Perez , Stephen J. Hrinya , Eugene L. Shoykhet
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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公开(公告)号：US10048715B2
公开(公告)日：2018-08-14
申请号：US15143321
申请日：2016-04-29
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Yehonatan Perez , Stephen J. Hrinya , Eugene L. Shoykhet
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.
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公开(公告)号：US20140211351A1
公开(公告)日：2014-07-31
申请号：US13750263
申请日：2013-01-25
Applicant: APPLE INC.
Inventor： Eugene L. Shoykhet , Yehonatan Perez
IPC: H02H3/20
Abstract: An electronic device may include protection circuitry coupled to a connector port. The connector port may be a reversible connector port that receives a mating reversible connector plug with either first or second orientations. The connector port may include contacts for receiving and/or transmitting signals during communications between the electronic device and the accessory device. The protection circuitry may monitor signals received at the contacts to determine whether transient or permanent connection faults exist. In response to determining that a connection fault exists at any of the contacts, the protection circuitry may electrically disconnect the faulty contacts from processing circuitry in the electronic device.
Abstract translation: 电子设备可以包括耦合到连接器端口的保护电路。 连接器端口可以是可逆的连接器端口，其接收具有第一或第二取向的配合的可逆连接器插头。 连接器端口可以包括用于在电子设备和附件设备之间的通信期间接收和/或发送信号的触点。 保护电路可以监视在触点处接收到的信号，以确定是否存在瞬时或永久连接故障。 响应于确定在任何触点处存在连接故障，保护电路可以将故障触点与电子设备中的处理电路电断开。
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Patent Agency Ranking
公开(公告)号：US09099864B2
公开(公告)日：2015-08-04
申请号：US13750263
申请日：2013-01-25
Applicant: Apple Inc.
Inventor： Eugene L. Shoykhet , Yehonatan Perez
Abstract: An electronic device may include protection circuitry coupled to a connector port. The connector port may be a reversible connector port that receives a mating reversible connector plug with either first or second orientations. The connector port may include contacts for receiving and/or transmitting signals during communications between the electronic device and the accessory device. The protection circuitry may monitor signals received at the contacts to determine whether transient or permanent connection faults exist. In response to determining that a connection fault exists at any of the contacts, the protection circuitry may electrically disconnect the faulty contacts from processing circuitry in the electronic device.
Abstract translation: 电子设备可以包括耦合到连接器端口的保护电路。 连接器端口可以是可逆的连接器端口，其接收具有第一或第二取向的配合的可逆连接器插头。 连接器端口可以包括用于在电子设备和附件设备之间的通信期间接收和/或发送信号的触点。 保护电路可以监视在触点处接收到的信号，以确定是否存在瞬时或永久连接故障。 响应于确定在任何触点处存在连接故障，保护电路可以将故障触点与电子设备中的处理电路电断开。
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公开(公告)号：US20140218045A1
公开(公告)日：2014-08-07
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: G01R31/04
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。
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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
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.
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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。
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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
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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