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：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：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.

公开(公告)号：AU2012201239B8

公开(公告)日：2013-09-26

申请号：AU2012201239

申请日：2012-03-01

Applicant: APPLE INC

Inventor： FARRER 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：HK1140285A1

公开(公告)日：2010-10-08

申请号：HK10106811

申请日：2010-07-13

Applicant: APPLE INC

Inventor： FARRAR DOUG ,  HEYL LAWRENCE ,  SANDER BRIAN

IPC: G06F20060101

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：HK1137876A1

公开(公告)日：2010-08-06

申请号：HK10103657

申请日：2010-04-14

Applicant: APPLE INC

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

IPC: H04M20060101 ,  H04R20060101

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.