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公开(公告)号：US09831672B2
公开(公告)日：2017-11-28
申请号：US14733186
申请日：2015-06-08
Applicant: Apple Inc.
Inventor： Louis Luh , William C. Athas , Heather R. Sullens
CPC classification number: H02J1/14 , G06F1/26 , G06F11/3058 , H02J3/00 , H02J7/0063 , H02J7/0065 , H02J2007/0067 , Y10T307/406
Abstract: The disclosed embodiments provide a system that operates a power supply. During operation, the system disposes a first switching mechanism between a first output of a first power converter and two or more loads. Next, the system obtains two or more error signals for the two or more loads, wherein each error signal from the two or more error signals represents a difference between a load voltage of a load from the two or more loads and a first reference voltage for the load from a first set of reference voltages for driving the two or more loads using the first power converter. The system then uses the first switching mechanism to couple the load with a largest error signal from the two or more error signals to the first output.
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公开(公告)号：US20170012583A1
公开(公告)日：2017-01-12
申请号：US15211083
申请日：2016-07-15
Applicant: Apple Inc.
Inventor： William C. Athas , Catherine S. Chou
IPC: H03B5/12
CPC classification number: H03B5/1234 , H03B5/1212 , H03B5/1228
Abstract: The disclosed embodiments provide a resonant oscillator circuit. The resonant oscillator circuit includes a clipping mechanism configured to clip an output voltage of a signal pulse generated by the resonant oscillator circuit to a predefined constant level. The resonant oscillator circuit also includes a feedback path configured to return energy from the clipping mechanism to an input of the resonant oscillator circuit.
Abstract translation: 所公开的实施例提供了一种谐振振荡器电路。 谐振振荡器电路包括限幅机构，其构造成将由共振振荡器电路产生的信号脉冲的输出电压钳位到预定的恒定电平。 谐振振荡器电路还包括被配置为将能量从限幅机构返回到谐振振荡器电路的输入的反馈路径。
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公开(公告)号：US09455702B2
公开(公告)日：2016-09-27
申请号：US14547705
申请日：2014-11-19
Applicant: Apple Inc.
Inventor： P. Jeffrey Ungar , William C. Athas , Jeffrey G. Koller , Derek G. Pyne
IPC: H03K5/13 , H03K17/687 , H02M1/08 , H02M1/00 , H02M3/158
CPC classification number: H03K17/687 , H02M1/08 , H02M3/158 , H02M2001/0054 , Y02B70/1425 , Y02B70/1491
Abstract: The disclosed embodiments provide a circuit for driving a capacitive load. The circuit includes a first inductor with an input terminal and a load terminal, wherein the load terminal is coupled to the capacitive load. The circuit also includes four or more switching devices. The switching devices may hold a voltage on the load terminal at zero volts. Next, the switching devices may charge the capacitive load through the first inductor until the voltage on the load terminal reaches a first input voltage supplied by a voltage source. The switching devices may then hold the voltage on the load terminal at the first input voltage. Finally, the switching devices may discharge the capacitive load through the first inductor until the voltage on the load terminal reaches zero volts.
Abstract translation: 所公开的实施例提供用于驱动电容性负载的电路。 电路包括具有输入端子和负载端子的第一电感器，其中负载端子耦合到电容性负载。 该电路还包括四个或更多个开关装置。 开关器件可以在负载端子上保持零伏特的电压。 接下来，开关器件可以通过第一电感器对容性负载充电，直到负载端子上的电压达到由电压源提供的第一输入电压。 然后，开关器件可以将负载端子上的电压保持在第一输入电压。 最后，开关器件可以通过第一电感放电容性负载，直到负载端子上的电压达到零伏。
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公开(公告)号：US20200348789A1
公开(公告)日：2020-11-05
申请号：US16936245
申请日：2020-07-22
Applicant: Apple Inc.
Inventor： Wei Chen , Steven P. Hotelling , John Z. Zhong , William C. Athas , Wei H. Yao
Abstract: An electronic device may include a display. The display may be formed by an array of light-emitting diodes mounted to the surface of a substrate. The substrate may be a silicon substrate. Circuitry may be located in spaces between the light-emitting diodes. Circuitry may also be located on the rear surface of the silicon substrate and may be coupled to the array of light-emitting diodes using through-silicon vias. The circuitry may include integrated circuits and other components that are attached to the substrate and may include transistors and other circuitry formed within the silicon substrate. Touch sensor electrodes, light sensors, and other components may be located in the spaces between the light-emitting diodes. The substrate may be formed from a transparent material that allows image light to reach a lens and image sensor mounted below the substrate.
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公开(公告)号：US10044210B2
公开(公告)日：2018-08-07
申请号：US14746665
申请日：2015-06-22
Applicant: Apple Inc.
Inventor： Thomas C. Greening , P. Jeffrey Ungar , William C. Athas
Abstract: Some embodiments of the present invention provide a system that adaptively charges a battery, wherein the battery is a lithium-ion battery which includes a transport-limiting electrode governed by diffusion, an electrolyte separator and a non-transport-limiting electrode. During operation, the system determines a lithium surface concentration at an interface between the transport-limiting electrode and the electrolyte separator based on a diffusion time for lithium in the transport-limiting electrode. Next, the system calculates a charging current or a charging voltage for the battery based on the determined lithium surface concentration. Finally, the system applies the charging current or the charging voltage to the battery.
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Patent Agency Ranking
公开(公告)号：US09819306B2
公开(公告)日：2017-11-14
申请号：US15211083
申请日：2016-07-15
Applicant: Apple Inc.
Inventor： William C. Athas , Catherine S. Chou
IPC: H03B5/12
CPC classification number: H03B5/1234 , H03B5/1212 , H03B5/1228
Abstract: The disclosed embodiments provide a resonant oscillator circuit. The resonant oscillator circuit includes a clipping mechanism configured to clip an output voltage of a signal pulse generated by the resonant oscillator circuit to a predefined constant level. The resonant oscillator circuit also includes a feedback path configured to return energy from the clipping mechanism to an input of the resonant oscillator circuit.
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公开(公告)号：US20150123618A1
公开(公告)日：2015-05-07
申请号：US14594621
申请日：2015-01-12
Applicant: Apple Inc.
Inventor： William C. Athas , Thomas C. Greening
IPC: H02J7/00
CPC classification number: H02J7/0019 , H02J7/0016 , H02M3/07 , Y10T307/696
Abstract: A system that balances voltages between battery banks. The system includes battery banks, including a first bank and a second bank, and a first capacitor. The system also includes a first set of switching devices which selectively couple first and second terminals of the first capacitor to first and second terminals of the first bank, and to first and second terminals of the second bank. The system includes a clocking circuit which generates clock signals with substantially non-overlapping first and second clock phases. This clocking circuit is configured so that during the first phase the first and second terminals of the first capacitor are coupled to the first and second terminals of the first bank, respectively, and during the second phase the first and second terminals of the first capacitor are coupled to the first and second terminals of the second bank, respectively.
Abstract translation: 一种平衡电池组之间电压的系统。 该系统包括包括第一组和第二组以及第一电容器的电池组。 该系统还包括第一组开关装置，其将第一电容器的第一和第二端子选择性地耦合到第一组的第一和第二端子以及第二组的第一和第二端子。 该系统包括产生具有基本上不重叠的第一和第二时钟相位的时钟信号的时钟电路。 该时钟电路被配置为使得在第一阶段期间，第一电容器的第一和第二端子分别耦合到第一组的第一和第二端子，并且在第二阶段期间，第一电容器的第一和第二端子是 分别耦合到第二组的第一和第二端子。
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8.发明申请公开(公告)号：US20140247270A1
公开(公告)日：2014-09-04
申请号：US14276190
申请日：2014-05-13
Applicant: Apple Inc.
Inventor： Binu Mathew , William C. Athas , Nils E. Mattisson
IPC: G09G5/399
Abstract: The disclosed embodiments provide a system that facilitates driving a display in a computer system. During operation, the system receives an input video stream from a graphics source, wherein the input video stream comprises a sequence of video frames. Next, the system directs the input video stream through a set of two or more memory buffers including a front buffer and a back buffer to produce an output video stream, which is used to drive the display. While directing the input video stream through the set of memory buffers, the system writes a video frame from the input video stream into the back buffer, and concurrently drives the output video stream from a preceding video frame in the front buffer. When the writing of the video frame completes, the system switches buffers so that the back buffer becomes the front buffer, which drives the output video stream, and the front buffer becomes either a spare buffer or the back buffer, which receives a subsequent frame from the input video stream.
Abstract translation: 所公开的实施例提供了有助于驱动计算机系统中的显示器的系统。 在操作期间，系统从图形源接收输入视频流，其中输入视频流包括一系列视频帧。 接下来，系统通过一组包括前缓冲器和后缓冲器的两个或多个存储器缓冲器来引导输入视频流，以产生用于驱动显示器的输出视频流。 在将输入视频流引导通过该组存储器缓冲器的同时，系统将视频帧从输入视频流写入后缓冲器，同时从前缓冲器中的前一视频帧驱动输出视频流。 当视频帧的写入完成时，系统切换缓冲器，使得后缓冲器变为前缓冲器，其驱动输出视频流，并且前缓冲器变为备用缓冲器或后缓冲器，后缓冲器从后缓冲器接收后续帧 输入视频流。
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公开(公告)号：US20140082379A1
公开(公告)日：2014-03-20
申请号：US13622259
申请日：2012-09-18
Applicant: APPLE INC.
Inventor： Prasanna Nambi , Paolo Sacchetto , Eric G. Smith , William C. Athas
IPC: G06F1/26
CPC classification number: G06F1/263 , G09G3/3648 , G09G3/3696 , G09G2330/00 , G09G2330/028
Abstract: A method and system are described for powering a display controller in an electronic device. In the described embodiments, the display controller includes a display controller power management circuit directly connected to a battery.
Abstract translation: 描述了为电子设备中的显示控制器供电的方法和系统。 在所描述的实施例中，显示控制器包括直接连接到电池的显示控制器电源管理电路。
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公开(公告)号：US11561239B2
公开(公告)日：2023-01-24
申请号：US16994524
申请日：2020-08-14
Applicant: Apple Inc.
Inventor： Gierad Laput , Jared LeVan Zerbe , William C. Athas , Andreas Edgar Schobel , Shawn R. Scully , Brian H. Tsang , Kevin Lynch , Charles Maalouf , Shiwen Zhao
Abstract: Individual health related events (e.g., handwashing events) can be detected based on multiple sensors including motion and audio sensors. Detecting a qualifying handwashing event can include detecting a qualifying scrubbing event based on motion data (e.g., accelerometer data) and a qualifying rinsing event based on audio data. In some examples, power consumption can be reduced by implementing one or more power saving mitigations.
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