公开(公告)号：WO2010104541A1

公开(公告)日：2010-09-16

申请号：PCT/US2009/069043

申请日：2009-12-21

Applicant: APPLE INC. ,  BHARGAVA, Rishabh ,  FARRAR, Doug

Inventor： BHARGAVA, Rishabh ,  FARRAR, Doug

IPC: H01R13/703

CPC classification number: H02J4/00 ,  H04M1/6058 ,  H04M1/72527 ,  Y10T307/766 ,  Y10T307/826

Abstract: This is generally directed to providing protection circuitry to selectively handle power- providing cables and headset cables that can couple to the same port of an electronic device. In some embodiments, the device can include a Headset Rx chip to communicate with the headset cable and a Power Rx chip to communicate with the power-providing cable. As the Headset Rx chip and the Power Rx chip can be coupled to the same contact of the device's port, these chips may prevent one another from operating correctly or may damage one another. Accordingly, in some embodiments, it can be determined whether a headset cable or a power- providing cable is coupled to the device. When a headset cable is coupled to the device, the protection circuitry can disconnect the Power Rx chip. Similarly, when a power-providing cable is coupled to the device, the protection circuitry can disconnect the Headset Rx chip.

Abstract translation: 这通常涉及提供保护电路以选择性地处理能够耦合到电子设备的相同端口的提供电力的电缆和耳机线缆。 在一些实施例中，设备可以包括与耳机线缆通信的耳机Rx芯片和与供电电缆通信的Power Rx芯片。 由于耳机Rx芯片和Power Rx芯片可以耦合到设备端口的相同触点，这些芯片可能会相互阻止，否则可能会相互损坏。 因此，在一些实施例中，可以确定耳机线缆或供电电缆是否耦合到设备。 当耳机电缆连接到设备时，保护电路可以断开Power Rx芯片。 类似地，当电源提供电缆耦合到设备时，保护电路可以断开耳机Rx芯片。

公开(公告)号：WO2008156689A4

公开(公告)日：2008-12-24

申请号：PCT/US2008/007430

申请日：2008-06-13

Applicant: APPLE INC. ,  FARRAR, Doug ,  HEYL, Lawrence ,  SANDER, Brian

Inventor： FARRAR, Doug ,  HEYL, Lawrence ,  SANDER, Brian

IPC: G06F1/26 ,  G06F13/40

Abstract: Handshaking circuits are provided in a communications cable and in a device operable to be mated with the communications cable. Before a device can utilize the power supply signal of such a communications channel, the two handshaking circuits must sufficiently identify one another over a power supply signal with a decreased voltage. The decreased voltage allows for a cable plug to be provided with a safe, protected power that cannot cause harm to a human. The decreased voltage also reduces the chance that a device can receive a primary power supply signal from the cable before the device sufficiently identifies itself. Accordingly, a laptop may be connected to a portable music player, but the voltage of the power supply signal provided by the laptop to the cable may be decreased on-cable until the handshaking circuit of the portable music player sufficiently performs a handshaking operation with a on-cable handshaking circuit.

公开(公告)号：EP2158535A2

公开(公告)日：2010-03-03

申请号：EP08768461.9

申请日：2008-06-13

Applicant: Apple Inc.

Inventor： FARRAR, Doug ,  HEYL, Lawrence ,  SANDER, Brian

IPC: G06F1/26

CPC classification number: G06F1/266 ,  G06F13/4081 ,  G06F21/81 ,  Y02D10/14 ,  Y02D10/151

Abstract: Handshaking circuits (142) are provided in a communications cable and in a device (150) operable to be mated with the communications cable. Before a device (150) can utilize the power supply signal of such a communications channel, the two handshaking circuits must sufficiently identify one another over a power supply signal with a decreased voltage. The decreased voltage allows for a cable plug to be provided with a safe, protected power that cannot cause harm to a human. The decreased voltage also reduces the chance that a device can receive a primary power supply signal from the cable before the device sufficiently identifies itself ; Accordingly, a laptop may be connected to a portable music player, but the voltage of the power supply signal provided by the laptop to the cable may be decreased on-cable until the handshaking circuit of the portable music player sufficiently performs a handshaking operation with a on-cable handshaking circuit.

公开(公告)号：EP2158535B1

公开(公告)日：2013-06-12

申请号：EP08768461.9

申请日：2008-06-13

Applicant: APPLE INC.

Inventor： FARRAR, Doug ,  HEYL, Lawrence ,  SANDER, Brian

IPC: G06F1/26 ,  G06F21/81 ,  G06F13/40

CPC classification number: G06F1/266 ,  G06F13/4081 ,  G06F21/81 ,  Y02D10/14 ,  Y02D10/151

Abstract: Handshaking circuits (142) are provided in a communications cable and in a device (150) operable to be mated with the communications cable. Before a device (150) can utilize the power supply signal of such a communications channel, the two handshaking circuits must sufficiently identify one another over a power supply signal with a decreased voltage. The decreased voltage allows for a cable plug to be provided with a safe, protected power that cannot cause harm to a human. The decreased voltage also reduces the chance that a device can receive a primary power supply signal from the cable before the device sufficiently identifies itself ; Accordingly, a laptop may be connected to a portable music player, but the voltage of the power supply signal provided by the laptop to the cable may be decreased on-cable until the handshaking circuit of the portable music player sufficiently performs a handshaking operation with a on-cable handshaking circuit.