公开(公告)号：US20150349464A1

公开(公告)日：2015-12-03

申请号：US14641276

申请日：2015-03-06

Applicant: APPLE INC.

Inventor： Roderick B. Hogan ,  Joseph C. Curcio ,  Nathan Johanningsmeier

IPC: H01R13/6471 ,  H01R24/58

CPC classification number: H01R13/7039 ,  H01R24/58 ,  H01R2107/00 ,  H04R1/1041 ,  H04R2420/05 ,  H04R2420/09

Abstract: An audio jack may include two contacts to electrically connect to a ground contact of an audio plug in order to detect that a metallic audio plug is inserted into the audio jack. A first of these two contacts may be grounded to form a current return path that generates a ground voltage at the ground contact of the audio plug. The second of these two contacts may be repurposed after the detection to sense the ground voltage. The sensed ground voltage may be added to right and left audio signals. The net voltages provided to the audio plug may be right and left audio signals that include the sensed ground voltage minus the actual ground voltage at the ground contact of the audio plug. This may remove the ground voltage from the net audio output signals, which may reduce crosstalk.

Abstract translation: 音频插孔可以包括两个触点，以电连接到音频插头的接地触点，以便检测金属音频插头插入到音频插孔中。 这两个触点中的第一个可以接地以形成在音频插头的接地触点处产生接地电压的电流返回路径。 这两个触点中的第二个可以在检测到之后重新利用以检测接地电压。 感测的接地电压可以被添加到右和左音频信号。 提供给音频插头的净电压可以是包括感测到的接地电压减去音频插头的接地触点的实际接地电压的右和左音频信号。 这可能会从网络音频输出信号中消除接地电压，这可能会降低串扰。

公开(公告)号：US09854355B2

公开(公告)日：2017-12-26

申请号：US14641283

申请日：2015-03-06

Applicant: Apple Inc.

Inventor： Roderick B. Hogan ,  Joseph C. Curcio ,  David C. Breece, III ,  Cara S. Yang ,  Nathan Johanningsmeier ,  Kavitha Srinivasan

IPC: H02B1/00 ,  H04R3/00 ,  H02M3/07 ,  H04R1/10

CPC classification number: H04R3/00 ,  H02M3/07 ,  H04R1/1041 ,  H04R2420/05

Abstract: Circuits, methods, and apparatus for grounding contacts in an audio jack. One example may provide a driver, such as a charge pump, driving a first transistor or switch coupled between a first contact in an audio jack and ground, and a second transistor or switch coupled between a second contact in the audio jack and ground. The first transistor or switch and second transistor or switch may be p-channel transistors or n-channel transistors depletion or enhancement-mode transistors, floating-gate transistors, MEMs, relays, or other switching devices. The first and second transistors or switches may be on and conducting when power is removed from the driver.

公开(公告)号：US09793658B2

公开(公告)日：2017-10-17

申请号：US14641276

申请日：2015-03-06

Applicant: Apple Inc.

Inventor： Roderick B. Hogan ,  Joseph C. Curcio ,  Nathan Johanningsmeier

IPC: G06F13/12 ,  G06F13/38 ,  H01R13/703 ,  H01R24/58 ,  H01R107/00 ,  H04R1/10

CPC classification number: H01R13/7039 ,  H01R24/58 ,  H01R2107/00 ,  H04R1/1041 ,  H04R2420/05 ,  H04R2420/09

Abstract: An audio jack may include two contacts to electrically connect to a ground contact of an audio plug in order to detect that a metallic audio plug is inserted into the audio jack. A first of these two contacts may be grounded to form a current return path that generates a ground voltage at the ground contact of the audio plug. The second of these two contacts may be repurposed after the detection to sense the ground voltage. The sensed ground voltage may be added to right and left audio signals. The net voltages provided to the audio plug may be right and left audio signals that include the sensed ground voltage minus the actual ground voltage at the ground contact of the audio plug. This may remove the ground voltage from the net audio output signals, which may reduce crosstalk.

公开(公告)号：US20150249876A1

公开(公告)日：2015-09-03

申请号：US14641283

申请日：2015-03-06

Applicant: Apple Inc.

Inventor： Roderick B. Hogan ,  Joseph C. Curcio ,  David C. Breece III ,  Cara S. Yang ,  Nathan Johanningsmeier ,  Kavitha Srinivasan

IPC: H04R1/08 ,  H04R3/00 ,  H02M3/07

CPC classification number: H04R3/00 ,  H02M3/07 ,  H04R1/1041 ,  H04R2420/05

Abstract: Circuits, methods, and apparatus for grounding contacts in an audio jack. One example may provide a driver, such as a charge pump, driving a first transistor or switch coupled between a first contact in an audio jack and ground, and a second transistor or switch coupled between a second contact in the audio jack and ground. The first transistor or switch and second transistor or switch may be p-channel transistors or n-channel transistors depletion or enhancement-mode transistors, floating-gate transistors, MEMs, relays, or other switching devices. The first and second transistors or switches may be on and conducting when power is removed from the driver.

Abstract translation: 音频插孔接地触点的电路，方法和设备。 一个示例可以提供驱动器，例如电荷泵，驱动耦合在音频插座和地之间的第一触点之间的第一晶体管或开关，以及耦合在音频插孔和地之间的第二触点之间的第二晶体管或开关。 第一晶体管或开关和第二晶体管或开关可以是p沟道晶体管或n沟道晶体管耗尽或增强型晶体管，浮栅晶体管，MEM，继电器或其它开关器件。 当从驱动器去除电力时，第一和第二晶体管或开关可以导通和导通。