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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。
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公开(公告)号：US20140093103A1
公开(公告)日：2014-04-03
申请号：US13630202
申请日：2012-09-28
Applicant: APPLE INC.
Inventor： David C. Breece, III , Nathan Johanningsmeier , Cara S. Yang
IPC: H03F99/00
CPC classification number: H03F1/26 , H03F3/181 , H03F3/45475 , H03F3/68 , H03F2203/45528 , H03F2203/45594 , H04R5/04 , H04R2420/05
Abstract: An audio source device has an audio connector to which an external load can be connected. An audio signal is amplified and then driven through the connector, wherein the amplification process uses feedback from the return pin of the connector. The return pin is directly connected to a ground break resistor circuit. The ground break resistor circuit is connected between the return pin of the audio connector and circuit ground. A determination is made as to whether the connected external load has a low impedance or a high impedance. When a low impedance load is detected, such as a headset, the ground break resistor circuit is essentially short-circuited. When a high impedance load is detected, the ground break resistor circuit is maintained and its value is set in accordance with the detected load. Other embodiments are also described.
Abstract translation: 音频源设备具有可连接外部负载的音频连接器。 音频信号被放大然后通过连接器驱动，其中放大过程使用来自连接器的返回引脚的反馈。 返回引脚直接连接到断路电阻电路。 接地断路电阻连接在音频连接器的回路引脚和电路接地之间。 确定连接的外部负载是否具有低阻抗或高阻抗。 当检测到低阻抗负载（例如耳机）时，接地断路电阻电路基本上短路。 当检测到高阻抗负载时，保持接地断路电阻电路，并根据检测到的负载设定其值。 还描述了其它实施例。
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Patent Agency Ranking
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
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.
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公开(公告)号：US20140113492A1
公开(公告)日：2014-04-24
申请号：US13913255
申请日：2013-06-07
Applicant: Apple Inc.
Inventor： Joshua Funamura , Nathan Johanningsmeier , Niel D. Warren , Girault W. Jones
IPC: H01R13/66
Abstract: Audio jack optical modules that may have a reduced size. Various examples may provide an optical module for an audio jack where a driver circuit is omitted from the optical module and instead placed either elsewhere in the audio jack or separately outside the audio jack. In some examples, the driver may be integrated with a logic circuit, such as a coder-decoder (CODEC) or other logic circuit. Other examples may provide an optical module for an audio jack where a lens for a light-emitting diode is omitted. In some examples, a higher-power light-emitting diode may be used. These light-emitting diodes may be strong enough to provide a requisite amount of light to a detector in, or associated with, an audio plug.
Abstract translation: 可能具有减小尺寸的音频插孔光学模块。 各种示例可以提供用于音频插孔的光学模块，其中从光学模块省略驱动器电路，而是将其放置在音频插孔的其他地方或单独地在音频插孔外部。 在一些示例中，驱动器可以与诸如编码器 - 解码器（CODEC）或其他逻辑电路的逻辑电路集成。 其他示例可以提供用于音频插孔的光学模块，其中省略了用于发光二极管的透镜。 在一些示例中，可以使用更高功率的发光二极管。 这些发光二极管可能足够强以向音频插头中的或与其相关联的检测器提供必需量的光。
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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.
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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
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。
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公开(公告)号：US09099967B2
公开(公告)日：2015-08-04
申请号：US13630202
申请日：2012-09-28
Applicant: Apple Inc.
Inventor： David C. Breece, III , Nathan Johanningsmeier , Cara S. Yang
CPC classification number: H03F1/26 , H03F3/181 , H03F3/45475 , H03F3/68 , H03F2203/45528 , H03F2203/45594 , H04R5/04 , H04R2420/05
Abstract: An audio source device has an audio connector to which an external load can be connected. An audio signal is amplified and then driven through the connector, wherein the amplification process uses feedback from the return pin of the connector. The return pin is directly connected to a ground break resistor circuit. The ground break resistor circuit is connected between the return pin of the audio connector and circuit ground. A determination is made as to whether the connected external load has a low impedance or a high impedance. When a low impedance load is detected, such as a headset, the ground break resistor circuit is essentially short-circuited. When a high impedance load is detected, the ground break resistor circuit is maintained and its value is set in accordance with the detected load. Other embodiments are also described.
Abstract translation: 音频源设备具有可连接外部负载的音频连接器。 音频信号被放大然后通过连接器驱动，其中放大过程使用来自连接器的返回引脚的反馈。 返回引脚直接连接到断路电阻电路。 接地断路电阻连接在音频连接器的回路引脚和电路接地之间。 确定连接的外部负载是否具有低阻抗或高阻抗。 当检测到低阻抗负载（例如耳机）时，接地断路电阻电路基本上短路。 当检测到高阻抗负载时，保持接地断路电阻电路，并根据检测到的负载设定其值。 还描述了其它实施例。
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