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公开(公告)号：US20230408848A1
公开(公告)日：2023-12-21
申请号：US18456315
申请日：2023-08-25
Applicant: Apple Inc.
Inventor： Patrick R. Gill , Louis Luh , Eric G. Smith
Abstract: A pair of eyeglasses may include one or more adjustable lenses. An adjustable lens may include electrically modulated optical material such as one or more liquid crystal cells having a phase profile that is adjusted using patterned electrodes. Digital-to-analog converter circuits may provide voltages to the electrodes. To save space on the lens, a smaller number of digital-to-analog converter circuits may provide voltages to a greater number of electrodes by sequentially coupling and decoupling the digital-to-analog converter circuits to different groups of electrodes, advancing from group-to-group with each clock cycle by a number of electrodes that is less than the number of digital-to-analog converter circuits. At least one of the electrodes in each group may be driven at the same voltage for two consecutive clock cycles to avoid erroneous voltages resulting from the parasitic capacitance between adjacent fingers.
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公开(公告)号：US11703698B1
公开(公告)日：2023-07-18
申请号：US16554136
申请日：2019-08-28
Applicant: Apple Inc.
Inventor： Miikka M. Kangas , Eric G. Smith , Qing Liu , Jeffrey G. Koller
CPC classification number: G02F1/0123 , G01C3/06 , G02C7/083 , G02F1/13306
Abstract: Eyeglasses may include one or more lenses and control circuitry that adjusts an optical power of the lenses. The control circuitry may be configured to determine a user's prescription and accommodation range during a vision characterization process. The vision characterization process may include adjusting the optical power of the lens until the user indicates that an object viewed through the lens is in focus. A distance sensor may measure the distance to the in-focus object. The control circuitry may calculate the user's prescription based on the optical power of the lens and the distance to the in-focus object. The control circuitry may adjust the optical power automatically or in response to user input. The object viewed through the lens may be an electronic device. The user may control the optical power of the lens and/or indicate when objects are in focus by providing input to the electronic device.
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公开(公告)号：US09658634B2
公开(公告)日：2017-05-23
申请号：US14673326
申请日：2015-03-30
Applicant: Apple Inc.
Inventor： Brijesh Tripathi , Eric G. Smith , Erik P. Machnicki , Jung Wook Cho , Khaled M. Alashmouny , Kiran B. Kattel , Vijay M. Bettada , Bo Yang , Wenlong Wei
CPC classification number: G05F3/02 , G06F1/324 , G06F1/3296
Abstract: An under voltage detection circuit and method of operating an IC including the same is disclosed. In one embodiment, an IC includes an under voltage protection circuit having first and second comparators configured to compare a supply voltage to first and second voltage thresholds, respectively, with the second voltage threshold being greater than the first. A logic circuit is coupled to receive signals from the first and second comparators. During operation in a high performance state by a corresponding functional circuit, the logic circuit is configured to cause assertion of a throttling signal responsive to an indication that the supply voltage has fallen below the first threshold. A clock signal provided to the functional circuit may be throttled responsive to the indication. If the supply voltage subsequently rises to a level above the second threshold, the throttling signal may be de-asserted.
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公开(公告)号：US08933643B2
公开(公告)日：2015-01-13
申请号：US13659888
申请日：2012-10-24
Applicant: Apple Inc.
Inventor： Alejandro Lara Ascorra , Shimon Elkayam , Asif Hussain , Brad Lee Patton , Steven J. Sfarzo , Eric G. Smith
IPC: H05B37/02
CPC classification number: H05B33/0842
Abstract: One embodiment of a display backlight driver integrated circuit can be configured for operation in at least two different ways. A first method transfers data from an EEPROM to hardware registers prior to regular operation. A second method also transfers data from an EEPROM to registers. However, hardware registers can be overwritten with data accepted from a control bus, prior to regular operation. A keyboard driver IC can detect the presence or absence of a cable to an LED. If the cable is absent, the driver IC will not supply power for the LED. One embodiment of a keyboard and display backlight control system can be configured to allow substantially independent operation.
Abstract translation: 显示器背光驱动器集成电路的一个实施例可被配置为以至少两种不同的方式进行操作。 第一种方法是在正常操作之前将数据从EEPROM传输到硬件寄存器。 第二种方法还将数据从EEPROM传输到寄存器。 但是，在正常操作之前，硬件寄存器可以被从控制总线接受的数据覆盖。 键盘驱动器IC可以检测到LED的电缆的存在或不存在。 如果电缆不存在，驱动器IC将不会为LED供电。 键盘和显示器背光控制系统的一个实施例可以被配置为允许基本独立的操作。
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公开(公告)号：US11880111B1
公开(公告)日：2024-01-23
申请号：US17181911
申请日：2021-02-22
Applicant: Apple Inc.
Inventor： Patrick R. Gill , Yu Horie , Eric G. Smith
IPC: G02F1/1343 , G02F1/1345 , G02F1/137 , G02F1/29
CPC classification number: G02F1/137 , G02F1/13439 , G02F1/134309 , G02F1/294 , G02F1/1345
Abstract: A pair of eyeglasses may include one or more adjustable lenses that are each configured to align with a respective one of a user's eyes. The adjustable lenses may each include electrically modulated optical material such as one or more liquid crystal cells, each having a phase profile that is adjusted using patterned electrodes. Analog voltages may be provided to the patterned electrodes through variable-resistance conductive paths that are each coupled to a subset of the patterned electrodes. Digital voltage selection circuitry may be used to select which analog voltage to apply to each of the variable-resistance conductive paths from a predetermined set of analog voltages that are generated off of the lens. The digital voltage selection circuitry may include an array of multiplexers, each of which selects a desired voltage based on control signals received from digital control circuitry such a shift register and/or a decoder.
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Patent Agency Ranking
公开(公告)号：US20160291625A1
公开(公告)日：2016-10-06
申请号：US14673326
申请日：2015-03-30
Applicant: Apple Inc.
Inventor： Brijesh Tripathi , Eric G. Smith , Erik P. Machnicki , Jung Wook Cho , Khaled M. Alashmouny , Kiran B. Kattel , Vijay M. Bettada , Bo Yang , Wenlong Wei
IPC: G05F3/02
CPC classification number: G05F3/02 , G06F1/324 , G06F1/3296
Abstract: An under voltage detection circuit and method of operating an IC including the same is disclosed. In one embodiment, an IC includes an under voltage protection circuit having first and second comparators configured to compare a supply voltage to first and second voltage thresholds, respectively, with the second voltage threshold being greater than the first. A logic circuit is coupled to receive signals from the first and second comparators. During operation in a high performance state by a corresponding functional circuit, the logic circuit is configured to cause assertion of a throttling signal responsive to an indication that the supply voltage has fallen below the first threshold. A clock signal provided to the functional circuit may be throttled responsive to the indication. If the supply voltage subsequently rises to a level above the second threshold, the throttling signal may be de-asserted.
Abstract translation: 公开了一种欠压检测电路及其运算方法。 在一个实施例中，IC包括欠压保护电路，其具有第一和第二比较器，其被配置为分别将电源电压与第一和第二电压阈值进行比较，其中第二电压阈值大于第一电压阈值。 逻辑电路被耦合以从第一和第二比较器接收信号。 在通过相应的功能电路在高性能状态下操作期间，逻辑电路被配置为响应于电源电压已经低于第一阈值的指示而导致节流信号的断言。 提供给功能电路的时钟信号可以响应于指示而被节流。 如果电源电压随后上升到高于第二阈值的水平，则节流信号可以被取消断言。
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公开(公告)号：US09013113B2
公开(公告)日：2015-04-21
申请号：US13659890
申请日：2012-10-24
Applicant: Apple Inc.
Inventor： Alejandro Lara Ascorra , Eric G. Smith , Steven J. Sfarzo
CPC classification number: H05B33/0842
Abstract: One embodiment of a display backlight driver integrated circuit can be configured for operation in at least two different ways. A first method transfers data from an EEPROM to hardware registers prior to regular operation. A second method also transfers data from an EEPROM to registers. However, hardware registers can be overwritten with data accepted from a control bus, prior to regular operation. A keyboard driver IC can detect the presence or absence of a cable to an LED. If the cable is absent, the driver IC will not supply power for the LED. One embodiment of a keyboard and display backlight control system can be configured to allow substantially independent operation.
Abstract translation: 显示器背光驱动器集成电路的一个实施例可被配置为以至少两种不同的方式进行操作。 第一种方法是在正常操作之前将数据从EEPROM传输到硬件寄存器。 第二种方法还将数据从EEPROM传输到寄存器。 但是，在正常操作之前，硬件寄存器可以被从控制总线接受的数据覆盖。 键盘驱动器IC可以检测到LED的电缆的存在或不存在。 如果电缆不存在，驱动器IC将不会为LED供电。 键盘和显示器背光控制系统的一个实施例可以被配置为允许基本独立的操作。
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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：US20130278171A1
公开(公告)日：2013-10-24
申请号：US13659888
申请日：2012-10-24
Applicant: APPLE INC.
Inventor： Alejandro Lara Ascorra , Shimon Elkayam , Asif Hussain , Brad Lee Patton , Steven J. Sfarzo , Eric G. Smith
IPC: H05B37/02
CPC classification number: H05B33/0842
Abstract: One embodiment of a display backlight driver integrated circuit can be configured for operation in at least two different ways. A first method transfers data from an EEPROM to hardware registers prior to regular operation. A second method also transfers data from an EEPROM to registers. However, hardware registers can be overwritten with data accepted from a control bus, prior to regular operation. A keyboard driver IC can detect the presence or absence of a cable to an LED. If the cable is absent, the driver IC will not supply power for the LED. One embodiment of a keyboard and display backlight control system can be configured to allow substantially independent operation.
Abstract translation: 显示器背光驱动器集成电路的一个实施例可被配置为以至少两种不同的方式进行操作。 第一种方法是在正常操作之前将数据从EEPROM传输到硬件寄存器。 第二种方法还将数据从EEPROM传输到寄存器。 但是，在正常操作之前，硬件寄存器可以被从控制总线接受的数据覆盖。 键盘驱动器IC可以检测到LED的电缆的存在或不存在。 如果电缆不存在，驱动器IC将不会为LED供电。 键盘和显示器背光控制系统的一个实施例可以被配置为允许基本独立的操作。
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公开(公告)号：US11125826B2
公开(公告)日：2021-09-21
申请号：US16414958
申请日：2019-05-17
Applicant: Apple Inc.
Inventor： Qing Liu , Eric G. Smith
IPC: G01R31/389 , H02J7/00
Abstract: An electronic device can include a battery, a battery charger configured to receive power from an external power source and supply at least one of a charging current or a charging voltage to the battery, and a battery charger controller coupled to charger and configured to control the battery charger. More specifically, the battery charger controller may be configured to control the charger to supply a first AC signal as at least a part of the charging current or charging voltage supplied to the battery, measure a second AC signal associated with the first AC signal, and determine an impedance of the battery at a frequency of interest from the first and second AC signals. The electronic device can also or alternatively include a variable load that may be controlled to supply a first AC signal as at least part of the discharging current or discharging voltage of the battery.
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