公开(公告)号：WO2013048835A1

公开(公告)日：2013-04-04

申请号：PCT/US2012/056010

申请日：2012-09-19

Applicant: APPLE INC.

Inventor： HUSSAIN, Asif ,  PANDYA, Manisha P.

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2320/064 ,  G09G2330/02 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/346

Abstract: Systems and methods for inaudible enhanced pulse width modulation (PWM) backlight dimming are provided. By way of example, an electronic display backlight system according to the present disclosure may include a backlight element and backlight driver circuitry. The backlight driver circuitry may drive the backlight element at various brightness levels using at least two individual duty cycles that occur immediately after one another. The backlight driver circuitry may vary the individual duty cycles such that none will ever reach 100% unless all are 100%, thereby preventing the occurrence of audible noise that might otherwise arise if an "on" PWM period from one individual duty cycle continued into the next.

Abstract translation: 提供用于无声增强型脉宽调制（PWM）背光调光的系统和方法。 作为示例，根据本公开的电子显示器背光系统可以包括背光元件和背光驱动器电路。 背光驱动器电路可以使用至少两个彼此之间立即发生的独立占空比驱动各种亮度级的背光元件。 背光驱动器电路可以改变单独的占空比，使得除非全部都为100％，否则不会达到100％，从而防止如果从一个单独占空比的“导通”PWM周期持续到 下一个。

公开(公告)号：WO2019027691A1

公开(公告)日：2019-02-07

申请号：PCT/US2018/042936

申请日：2018-07-19

Applicant: APPLE INC.

Inventor： XIE, Yanhui ,  HUSSAIN, Asif ,  CHEN, Jingdong ,  PANDYA, Manisha P.

IPC: G09G3/34

Abstract: Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry includes a two-dimensional light-emitting diode (LED) array. The control circuitry may include a single LED array operable by a common driver or multiple LED arrays each operable by a dedicated LED matrix driver. Each matrix driver may receive a synchronization signal from a common controller and may include a programmable phase lock loop (PLL) to synchronize each matrix driver to the synchronization signal. The LED array may include multiple strings of LEDs mounted in series along the string. Each LED in each string may include a bypass switch operable to modify the current through that LED by pulse-width modulation.

公开(公告)号：WO2014099118A1

公开(公告)日：2014-06-26

申请号：PCT/US2013/065080

申请日：2013-10-15

Applicant: APPLE INC.

Inventor： HUSSAIN, Asif ,  NAVABI-SHIRAZI, Mohammad J. ,  CHEN, Jingdong ,  PANDYA, Manisha P.

IPC: G06F3/02

CPC classification number: H01H13/83 ,  G06F3/0202

Abstract: Systems, devices, and methods for a shared matrix 48 of shared row pins 72 and/or column pins 76 between a first array of keys and a second array of lights of a keyboard. A keyboard controller addresses the first array of keys 38 and the second array of lights 62 during a scanning period using the shared row pins 72 and/or column pins 76. Each key 38 is backlit by one or more lights 62 of the second array of lights 62 that may be individually controlled. The keyboard controller 56 may drive the desired lights 62 of a respective row while detecting key presses of the same row during the row interval using the shared row pins 72 and/or column pins 76. In some embodiments, the keyboard controller 56 may drive the desired lights 62 of a row during driving interval of the row interval, and scan the keys 38 of the row separately during a sensing interval of the row interval.

Abstract translation: 用于共享行引脚72和/或列引脚76的共享矩阵48在第一数组键和第二阵列的键盘之间的系统，装置和方法。 键盘控制器在扫描周期期间使用共享的行引脚72和/或列引脚76来寻址第一阵列的键38和第二阵列的光62.每个键38由第二阵列的一个或多个光62 灯62可以单独控制。 键盘控制器56可以使用共享的行引脚72和/或列引脚76在行间隔期间检测同一行的按键的同时驱动相应行的所需光62.在一些实施例中，键盘控制器56可以驱动 在行间隔的驱动间隔期间，所需的灯62为一行，并且在行间隔的感测间隔期间分别扫描该行的键38。

公开(公告)号：WO2013130836A2

公开(公告)日：2013-09-06

申请号：PCT/US2013/028362

申请日：2013-02-28

Applicant: APPLE INC.

Inventor： PATEL, Bharatkumar K. ,  CHERIAN, Abby ,  PANDYA, Manisha P. ,  JOSHI, Prasad S.

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0032 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02B70/16

Abstract: The disclosed embodiments provide an apparatus that controls a flyback converter for use with a computer system. During operation, the apparatus senses an output voltage and output current of the flyback converter. The apparatus then switches a mode for controlling the flyback converter from a discontinuous mode to a continuous mode based on the sensed output voltage and the sensed output current.

Abstract translation: 所公开的实施例提供了一种控制用于计算机系统的反激式转换器的装置。 在操作期间，该装置感测回扫转换器的输出电压和输出电流。 然后，该装置基于感测到的输出电压和感测的输出电流将用于将反激转换器控制的模式从不连续模式切换到连续模式。

公开(公告)号：WO2013085601A1

公开(公告)日：2013-06-13

申请号：PCT/US2012/057341

申请日：2012-09-26

Applicant: APPLE INC.

Inventor： HUSSAIN, Asif ,  PANDYA, Manisha P.

IPC: H05B33/08

CPC classification number: H05B33/0887 ,  Y02B20/341

Abstract: Systems, methods, and devices are provided for detecting short circuits in a backlight assembly without a resistor-based current sensor. For example, an electronic display according to the present disclosure may include a display panel and a backlight assembly to illuminate the display panel. The backlight assembly may drive a backlight element to illuminate the display panel and may include backlight short-circuit detection circuitry. The backlight short-circuit protection circuitry may detect a feedback voltage associated with the backlight element and determine when a short circuit has occurred based at least in part on the feedback voltage.

Abstract translation: 系统，方法和设备被提供用于检测背光组件中的短路而不使用基于电阻器的电流传感器。 例如，根据本公开的电子显示器可以包括显示面板和用于照亮显示面板的背光组件。 背光组件可以驱动背光元件照亮显示面板，并且可以包括背光短路检测电路。 背光短路保护电路可以检测与背光元件相关联的反馈电压，并且至少部分地基于反馈电压来确定何时发生短路。

公开(公告)号：EP2749129A1

公开(公告)日：2014-07-02

申请号：EP12787166.3

申请日：2012-09-26

Applicant: Apple Inc.

Inventor： HUSSAIN, Asif ,  PANDYA, Manisha P.

IPC: H05B33/08

CPC classification number: H05B33/0887 ,  Y02B20/341

Abstract: Systems, methods, and devices are provided for detecting short circuits in a backlight assembly without a resistor-based current sensor. For example, an electronic display according to the present disclosure may include a display panel and a backlight assembly to illuminate the display panel. The backlight assembly may drive a backlight element to illuminate the display panel and may include backlight short-circuit detection circuitry. The backlight short-circuit protection circuitry may detect a feedback voltage associated with the backlight element and determine when a short circuit has occurred based at least in part on the feedback voltage.

公开(公告)号：EP3283934A1

公开(公告)日：2018-02-21

申请号：EP16725327.7

申请日：2016-05-13

Applicant: Apple Inc.

Inventor： PANDYA, Manisha P. ,  SIMS, Nicholas A.

IPC: G06F1/26 ,  H02J7/00 ,  G06F1/30

CPC classification number: H02J1/00 ,  G06F1/263 ,  G06F1/266 ,  G06F1/305 ,  H02J7/0013 ,  H02J7/0052 ,  H02J7/0054 ,  H02J7/0068 ,  H02J7/0072 ,  H02J2007/0062 ,  H02J2007/0096

Abstract: The disclosed embodiments provide a charging device. The charging device includes a battery, a first physical port and a management apparatus. The management apparatus determines a first type and a first state of a first load device connected to the first physical port and allocates power supplied to the first load device through the first physical port according to the first type and the first state of the first load device.

公开(公告)号：EP2791755A1

公开(公告)日：2014-10-22

申请号：EP13708313.5

申请日：2013-02-21

Applicant: Apple Inc.

Inventor： YE, Mao ,  PATEL, Bharatkumar K. ,  LEE, Kisun ,  PANDYA, Manisha P. ,  ELKAYAM, Shimon

IPC: G06F1/28 ,  G06F1/26

CPC classification number: G06F1/20 ,  G06F1/26 ,  G06F1/263 ,  G06F1/28 ,  H02J7/0055 ,  H02J7/047 ,  H02J2007/0039

Abstract: The disclosed embodiments provide an apparatus that controls a current drawn from an adapter by a computer system. During operation, the apparatus senses the current drawn from the adapter using a first current sensor and a second current sensor, wherein a response time of the first current sensor is faster than a response time of the second current sensor. Then, when the current sensed using the first current sensor exceeds a predetermined high-current threshold, the apparatus limits the current drawn from the adapter to a first predetermined current limit. Additionally, when the current sensed using the second current sensor exceeds a predetermined thermal-limit current, the apparatus limits the current drawn from the adapter to the predetermined thermal-limit current.

Abstract translation: 所公开的实施例提供了一种控制由计算机系统从适配器抽出的电流的装置。 在操作期间，设备使用第一电流传感器和第二电流传感器感测从适配器抽出的电流，其中第一电流传感器的响应时间比第二电流传感器的响应时间快。 然后，当使用第一电流传感器感测的电流超过预定的大电流阈值时，该装置将从适配器提取的电流限制到第一预定电流极限。 此外，当使用第二电流传感器感测的电流超过预定的热限极电流时，该装置将从适配器吸取的电流限制在预定的热极限电流上。

公开(公告)号：WO2018144392A1

公开(公告)日：2018-08-09

申请号：PCT/US2018/015778

申请日：2018-01-29

Applicant: APPLE INC.

Inventor： RUSSELL, Antoin J. ,  PATEL, Bharat K. ,  PANDYA, Manisha P. ,  MOUSSAOUI, Zaki

IPC: H02J50/60

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using an output circuit that includes a wireless power transmitting coil. Measurement circuitry is coupled to the output circuit to help determine whether the wireless power receiving device is present and ready to accept transmission of wireless power. The measurement circuitry includes a measurement circuit that is coupled to the output circuit and that measures signals while oscillator circuitry supplies the output circuit with signals at a probe frequency. The measurement circuitry also includes a measurement circuit that is coupled to the output circuit and that measures signals while the oscillator circuitry sweeps signals applied to the output circuit between a first frequency and a second frequency to detect sensitive devices such as radio-frequency identification devices. Impulse response circuitry in the measurement circuitry is used to make inductance and Q factor measurements.

公开(公告)号：WO2018106762A1

公开(公告)日：2018-06-14

申请号：PCT/US2017/064832

申请日：2017-12-06

Applicant: APPLE INC.

Inventor： BENTOV, Izhar ,  DATTA, Supratik ,  HUSSAIN, Asif ,  PANDYA, Manisha P.

IPC: H02J50/10 ,  H02J50/40

CPC classification number: H02J50/10 ,  H02J50/40

Abstract: Systems and methods for wireless power transfer to an electronic device. In some embodiments, the disclosed devices includes one or more arrays of transmit coils within a charging surface on which an electronic device is placed for charging. A controller may apply a first alternating signal with a first phase to a first transmit coil, and a second alternating signal with a second phase to a second transmit coil. The offset of phases may produce increased magnetic flux through a receive coil of the electronic device to transfer power more efficiently.