公开(公告)号：GB2480043B

公开(公告)日：2013-07-17

申请号：GB201115001

申请日：2009-12-21

Applicant: APPLE INC

Inventor： BHARGAVA RISHUBH ,  FARRAR DOUG

IPC: H04M1/725 ,  H04M1/60

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.

公开(公告)号：GB2489344A

公开(公告)日：2012-09-26

申请号：GB201209287

申请日：2008-06-11

Applicant: APPLE INC

Inventor： FARRAR DOUG ,  HEYL LAWRENCE ,  SANDER BRIAN

IPC: G06F1/26 ,  G06F12/14 ,  G06F13/40 ,  G06F21/00 ,  H04L29/06

Abstract: Circuitry for regulating a power supply signal comprises (i) an input node for receiving the signal, (ii) an output node, (iii) a voltage regulation circuit coupled to the input node and operative to provide a decreased voltage power supply signal to the output node, (iv) a current pulse detector coupled to the output node and operative to generate a first signal in response to incoming current pulses on the output node, (v) a pulse stretching circuit coupled to the detector and operative to generate a second signal in response to the first signal, and (vi) a switching circuit coupled to the stretching circuit and operative to disable the voltage regulation circuit in response to the second signal so that the power supply signal received at the input node is provided to the output node.

公开(公告)号：DE112009004659T9

公开(公告)日：2013-11-21

申请号：DE112009004659

申请日：2009-12-21

Applicant: APPLE INC

Inventor： BHARGAVA RISHABH ,  FARRAR DOUG

IPC: H01R13/703

Abstract: Dies bezieht sich allgemein auf die Angabe einer Schutzschaltung zur selektiven Handhabung von leistungsversorgenden Kabeln und Headset-Kabeln, die mit demselben Anschluss einer elektronischen Vorrichtung gekoppelt werden können. In einigen Ausführungsformen kann die Vorrichtung einen Headset-Rx Chip zur Kommunikation mit dem Headset-Kabel und einen Power-Rx Chip zur Kommunikation mit dem leistungsversorgenden Kabel umfassen. Da der Headset-Rx Chip und der Power-Rx Chip mit demselben Kontakt des Anschlusses gekoppelt werden können, können sich diese Chips gegenseitig daran hindern, richtig zu funktionieren, oder sie können sich gegenseitig beschädigen. Infolgedessen kann, in einigen Ausführungsformen, festgestellt werden, ob ein Headset-Kabel oder ein leistungsversorgendes Kabel mit der Vorrichtung gekoppelt ist. Wenn ein Headset-Kabel mit der Vorrichtung gekoppelt ist, kann die Schutzschaltung den Power-Rx Chip abkoppeln. Gleichermaßen kann die Schutzschaltung den Headset-Rx Chip abkoppeln, wenn ein leistungsversorgendes Kabel mit der Vorrichtung gekoppelt ist.

公开(公告)号：AU2012201239A1

公开(公告)日：2012-03-22

申请号：AU2012201239

申请日：2012-03-01

Applicant: APPLE INC

Inventor： FARRAR DOUG ,  HEYL LAWRENCE ,  SANDER BRIAN

IPC: G06F1/26

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：AU2008266928A1

公开(公告)日：2008-12-24

申请号：AU2008266928

申请日：2008-06-13

Applicant: APPLE INC

Inventor： HEYL LAWRENCE ,  SANDER BRIAN ,  FARRAR DOUG

IPC: G06F1/26

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：GB2499952B8

公开(公告)日：2014-01-15

申请号：GB201310740

申请日：2009-12-21

Applicant: APPLE INC

Inventor： FARRAR DOUG ,  BHARGAVA RISHABH

IPC: H04M1/725

Abstract: The invention 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 (eg a 3.5mm headphone jack 506, fig.5). The device includes a Headset Rx circuit 742 to communicate with a headset cable and a Power Rx circuit 732 to communicate with a power-providing cable. As the Headset Rx circuit and the Power Rx circuit can be coupled to the same contact of the device's port, these circuits may prevent one another from operating correctly or may damage one another. Accordingly, a first contact 760 of the port is used to determine when a cable with a circuit is connected to the port and a second contact 764 is used to determine the cable type. When a headset cable (504, fig.5) is coupled to the device and authenticated by the Headset Rx circuit, a power control circuit 750 disconnects the Power Rx chip. The Headset Rx circuit may similarly be disconnected when a power-providing cable (502, fig.5) is coupled to the device and authenticated by the Power Rx circuit.

公开(公告)号：AU2012201239B2

公开(公告)日：2013-05-30

申请号：AU2012201239

申请日：2012-03-01

Applicant: APPLE INC

Inventor： FARRAR DOUG ,  HEYL LAWRENCE ,  SANDER BRIAN

IPC: G06F1/26

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：GB2460501B

公开(公告)日：2010-07-28

申请号：GB0823589

申请日：2008-12-29

Applicant: APPLE INC

Inventor： SANDER WENDELL B ,  TERLIZZI JEFFREY ,  FARRAR DOUG ,  JOHNSON TIMOTHY ,  SANDER BRIAN ,  CONNER BRIAN J ,  DOROGUSKER JESSE L

IPC: H04M1/60 ,  H04R5/033

Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.

公开(公告)号：GB2460501A

公开(公告)日：2009-12-09

申请号：GB0823589

申请日：2008-12-29

Applicant: APPLE INC

Inventor： SANDER WENDELL B ,  TERLIZZI JEFFREY ,  FARRAR DOUG ,  JOHNSON TIMOTHY ,  SANDER BRIAN ,  CONNER BRIAN J ,  DOROGUSKER JESSE L

IPC: H04M1/60 ,  H04R5/033

Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.

公开(公告)号：HK1129756A1

公开(公告)日：2009-12-04

申请号：HK09108551

申请日：2009-09-18

Applicant: APPLE INC

Inventor： FARRAR DOUG ,  HEYL LAWRENCE ,  SANDER BRIAN

IPC: G06F20060101 ,  H04L20060101

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.