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公开(公告)号：US20170064483A1
公开(公告)日：2017-03-02
申请号：US14839782
申请日：2015-08-28
Applicant: Apple Inc.
Inventor： Daniel K. Boothe , David C. Breece, III , Adrien N. Haage
CPC classification number: H03F3/183 , H03F3/2173 , H03F3/68 , H03F2200/03 , H04R5/04 , H04R2420/01 , H04R2499/11
Abstract: An audio amplifier circuit that is to receive three audio channel signals as inputs. A first amplifier has a first pair of outputs one of which produces a first combination sum of the three audio channel signals, and the other produces a second, different combination sum of the three audio channel signals. A second amplifier has a second pair of outputs one of which produces a third, different combination sum of the three audio channel signals and the other produces a fourth, different combination sum of the three audio channel signals. Other embodiments are also described and claimed.
Abstract translation: 一个音频放大器电路，用于接收三个音频通道信号作为输入。 第一放大器具有第一对输出，其中一个输出产生三个音频通道信号的第一组合和，另一个产生三个音频通道信号的第二个不同的组合和。 第二放大器具有第二对输出，其中一个输出产生三个音频通道信号的第三个不同的组合和，另一个产生三个音频通道信号的第四个不同的组合和。 还描述和要求保护其他实施例。
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公开(公告)号：US20140277643A1
公开(公告)日：2014-09-18
申请号：US13841628
申请日：2013-03-15
Applicant: APPLE INC.
Inventor： Cesar Lozano Villarreal , Ruenjou Lu , Mahmoud R. Amini , Jonathan M. Zweig , David C. Breece, III
CPC classification number: H01R24/58 , G06F13/102 , G06F13/20 , G06F13/4068 , G06F17/3074 , H01R24/86 , H01R2107/00
Abstract: Methods, systems, and apparatus for selectively communicating data and audio over a limited-size audio plug. A host device determines whether an audio accessory or a data communicating accessory is plugged therein via a signal, or lack thereof, communicated to the host device via the audio plug of the accessory. The host device then either communicates audio or data over the audio plug contacts that are typically used only for audio communication based on whether its connected to an audio accessory or data communicating accessory. An audio plug may also include a split-ring contact where multiple, independent contacts are formed in place of a single tip, ring, or sleeve contact. The split-ring contact may be used for communicating audio and/or data.
Abstract translation: 用于通过有限尺寸的音频插头选择性地传送数据和音频的方法，系统和装置。 主机设备经由附件的音频插头确定通过信号或其缺少将音频附件或数据通信附件插入到主机设备。 然后，主机设备通过音频插头联系人传送音频或数据，该音频或数据通常仅基于音频通信连接到音频附件或数据通信附件而仅用于音频通信。 音频插头还可以包括开环接触，其中形成多个独立接触件来代替单个尖端，环形或套筒接触。 分离环接触可用于传送音频和/或数据。
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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：US09847713B2
公开(公告)日：2017-12-19
申请号：US15070508
申请日：2016-03-15
Applicant: Apple Inc.
Inventor： David C. Breece, III , Roderick B. Hogan , Nathan A. Johanningsmeier
CPC classification number: H02M3/07 , H02M2003/071 , H03F1/0261 , H03F3/183 , H03F3/19 , H03F3/3432 , H03F2200/03
Abstract: A charge pump circuit having first and second input nodes to be coupled to a first power source, and top and bottom output nodes and an intermediate node. The charge pump circuit produces i) a voltage at the top output node that is higher than a voltage of the intermediate node, and ii) a voltage at the bottom output node that is lower than the voltage of the intermediate node. A bias voltage source has i) an input that is to be coupled to a second power source and ii) an output that produces an output voltage, which is a predetermined proportion of an input voltage at the input and that follows the input voltage downward and upward as the input voltage sags and recovers, respectively. The output of the bias voltage source is directly connected to the intermediate node of the output stage. Other embodiments are also described.
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公开(公告)号：US09787257B2
公开(公告)日：2017-10-10
申请号：US14839782
申请日：2015-08-28
Applicant: Apple Inc.
Inventor： Daniel K. Boothe , David C. Breece, III , Adrien N. Haage
CPC classification number: H03F3/183 , H03F3/2173 , H03F3/68 , H03F2200/03 , H04R5/04 , H04R2420/01 , H04R2499/11
Abstract: An audio amplifier circuit that is to receive three audio channel signals as inputs. A first amplifier has a first pair of outputs one of which produces a first combination sum of the three audio channel signals, and the other produces a second, different combination sum of the three audio channel signals. A second amplifier has a second pair of outputs one of which produces a third, different combination sum of the three audio channel signals and the other produces a fourth, different combination sum of the three audio channel signals. Other embodiments are also described and claimed.
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Patent Agency Ranking
公开(公告)号：US20170054257A1
公开(公告)日：2017-02-23
申请号：US15253649
申请日：2016-08-31
Applicant: APPLE INC.
Inventor： Cesar Lozano Villarreal , Ruenjou Lu , Mahmoud R. Amini , Jonathan M. Zweig , David C. Breece, III
CPC classification number: H01R24/58 , G06F13/102 , G06F13/20 , G06F13/4068 , G06F16/60 , H01R24/86 , H01R2107/00
Abstract: Methods, systems, and apparatus for selectively communicating data and audio over a limited-size audio plug. A host device determines whether an audio accessory or a data communicating accessory is plugged therein via a signal, or lack thereof, communicated to the host device via the audio plug of the accessory. The host device then either communicates audio or data over the audio plug contacts that are typically used only for audio communication based on whether its connected to an audio accessory or data communicating accessory. An audio plug may also include a split-ring contact where multiple, independent contacts are formed in place of a single tip, ring, or sleeve contact. The split-ring contact may be used for communicating audio and/or data.
Abstract translation: 用于通过有限尺寸的音频插头选择性地传送数据和音频的方法，系统和装置。 主机设备经由附件的音频插头确定通过信号或其缺少将音频附件或数据通信附件插入到主机设备。 然后，主机设备通过音频插头联系人传送音频或数据，该音频或数据通常仅基于音频通信连接到音频附件或数据通信附件而仅用于音频通信。 音频插头还可以包括开环接触，其中形成多个独立接触件来代替单个尖端，环形或套筒接触。 分离环接触可用于传送音频和/或数据。
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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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公开(公告)号：US20170271983A1
公开(公告)日：2017-09-21
申请号：US15070508
申请日：2016-03-15
Applicant: Apple Inc.
Inventor： David C. Breece, III , Roderick B. Hogan , Nathan A. Johanningsmeier
CPC classification number: H02M3/07 , H02M2003/071 , H03F1/0261 , H03F3/183 , H03F3/19 , H03F3/3432 , H03F2200/03
Abstract: A charge pump circuit having first and second input nodes to be coupled to a first power source, and top and bottom output nodes and an intermediate node. The charge pump circuit produces i) a voltage at the top output node that is higher than a voltage of the intermediate node, and ii) a voltage at the bottom output node that is lower than the voltage of the intermediate node. A bias voltage source has i) an input that is to be coupled to a second power source and ii) an output that produces an output voltage, which is a predetermined proportion of an input voltage at the input and that follows the input voltage downward and upward as the input voltage sags and recovers, respectively. The output of the bias voltage source is directly connected to the intermediate node of the output stage. Other embodiments are also described.
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公开(公告)号：US09436761B2
公开(公告)日：2016-09-06
申请号：US13841628
申请日：2013-03-15
Applicant: Apple Inc.
Inventor： Cesar Lozano Villarreal , Ruenjou Lu , Mahmoud R. Amini , Jonathan M. Zweig , David C. Breece, III
IPC: G06F17/00 , G06F17/30 , H01R24/58 , H01R24/86 , H01R107/00
CPC classification number: H01R24/58 , G06F13/102 , G06F13/20 , G06F13/4068 , G06F17/3074 , H01R24/86 , H01R2107/00
Abstract: Methods, systems, and apparatus for selectively communicating data and audio over a limited-size audio plug. A host device determines whether an audio accessory or a data communicating accessory is plugged therein via a signal, or lack thereof, communicated to the host device via the audio plug of the accessory. The host device then either communicates audio or data over the audio plug contacts that are typically used only for audio communication based on whether its connected to an audio accessory or data communicating accessory. An audio plug may also include a split-ring contact where multiple, independent contacts are formed in place of a single tip, ring, or sleeve contact. The split-ring contact may be used for communicating audio and/or data.
Abstract translation: 用于通过有限尺寸的音频插头选择性地传送数据和音频的方法，系统和装置。 主机设备经由附件的音频插头确定通过信号或其缺少将音频附件或数据通信附件插入到主机设备。 然后，主机设备通过音频插头联系人传送音频或数据，该音频或数据通常仅基于音频通信连接到音频附件或数据通信附件而仅用于音频通信。 音频插头还可以包括开环接触，其中形成多个独立接触件来代替单个尖端，环形或套筒接触。 分离环接触可用于传送音频和/或数据。
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公开(公告)号：US09263992B1
公开(公告)日：2016-02-16
申请号：US14486768
申请日：2014-09-15
Applicant: Apple Inc.
Inventor： David C. Breece, III , Dirk Schmelzer , Nathan A. Johanningsmeier
CPC classification number: H03F1/0205 , H03F3/183 , H03F3/2173 , H03F2200/03 , H03F2200/171
Abstract: A method for operating an audio system having multiple Class D audio amplifiers is described. An external oscillatory signal is coupled to the amplifiers, such that the switching frequencies of both of the amplifiers align with (e.g., are directly set to) a frequency of the external signal. An input level associated with an audio signal that is being amplified is detected, and the detected input level is compared to a threshold. When the comparison indicates that the input level is below a lower threshold, the frequency of the external oscillatory signal is raised, and when the comparison indicates that the input level is above an upper threshold, the frequency of the external oscillatory signal is lowered. Other embodiments are also described and claimed.
Abstract translation: 描述了一种用于操作具有多个D类音频放大器的音频系统的方法。 外部振荡信号耦合到放大器，使得两个放大器的开关频率与（例如，直接设置为）外部信号的频率对齐。 检测与被放大的音频信号相关联的输入电平，并将检测到的输入电平与阈值进行比较。 当比较指示输入电平低于较低阈值时，外部振荡信号的频率升高，当比较指示输入电平高于上限阈值时，外部振荡信号的频率降低。 还描述和要求保护其他实施例。
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