Patents by Inventor Asif Hussain
Asif Hussain has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11876439Abstract: A battery powered electronic device can include a battery to power one or more loads, a first DC-DC converter having an input coupled to the battery and an output, and a second DC-DC converter cascaded with the first DC-DC converter and coupled to a second load subject to pulsed operation. The first and second converters may be configured so as to isolate the one or more loads from transients associated with the pulsed operation of the second load. The second converter may have an input coupled to the output of the first converter and an output coupled to the second load. Alternatively, the second converter may be a bidirectional converter having first terminals coupled to the output of the first converter and second terminals coupled to an energy storage device.Type: GrantFiled: October 14, 2021Date of Patent: January 16, 2024Assignee: Apple Inc.Inventors: Yanhui Xie, Asif Hussain, Jingdong Chen, Zhiyuan Hu
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Patent number: 11823612Abstract: A display device include a first light emitting diode (LED), a second LED, and at least one processor of a driver. The processor drives the first LED and the second LED. The processor determines a first pulse width associated with the first LED and a second pulse width associated with the second LED based on a level of brightness to be emitted by the first LED and the second LED. The processor also receives a gap clock and determines a first pulse start time and a first pulse end time for the first LED based on the first pulse width. Moreover, the processor determines a second pulse start time and a second pulse end time for the second LED based on the first pulse end time, the second pulse width, and/or the gap clock, in which the first pulse end time and the second pulse end time are different.Type: GrantFiled: June 29, 2022Date of Patent: November 21, 2023Assignee: Apple Inc.Inventors: Behzad Mohtashemi, Asif Hussain, Feng Guo, Jingdong Chen, Ming Gu, Mohammad J Navabi-Shirazi, Omar Alnaggar, Venkataraman V Iyer, Yang Zhang
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Publication number: 20230333658Abstract: A portable computer includes a display portion comprising a display and a base portion pivotally coupled to the display portion. The base portion may include a bottom case and a top case, formed from a dielectric material, coupled to the bottom case. The top case may include a top member defining a top surface of the base portion and a sidewall integrally formed with the top member and defining a side surface of the base portion. The portable computer may also include a sensing system including a first sensing system configured to determine a location of a touch input applied to the top surface of the base portion and a second sensing system configured to determine a force of the touch input.Type: ApplicationFiled: June 20, 2023Publication date: October 19, 2023Inventors: Christiaan A. Ligtenberg, Brett W. Degner, Ron A. Hopkinson, Asif Hussain, Dinesh C. Mathew, Mikael M. Silvanto, Chang Zhang, Zheng Gao, Robert Y. Cao, Keith J. Hendren, Bryan W. Posner, Simon R. Lancaster-Larocque, Alex J. Lehmann
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Patent number: 11720176Abstract: A portable computer includes a display portion comprising a display and a base portion pivotally coupled to the display portion. The base portion may include a bottom case and a top case, formed from a dielectric material, coupled to the bottom case. The top case may include a top member defining a top surface of the base portion and a sidewall integrally formed with the top member and defining a side surface of the base portion. The portable computer may also include a sensing system including a first sensing system configured to determine a location of a touch input applied to the top surface of the base portion and a second sensing system configured to determine a force of the touch input.Type: GrantFiled: June 17, 2022Date of Patent: August 8, 2023Assignee: APPLE INC.Inventors: Christiaan A. Ligtenberg, Brett W. Degner, Ron A. Hopkinson, Asif Hussain, Dinesh C. Mathew, Mikael M. Silvanto, Chang Zhang, Zheng Gao, Robert Y. Cao, Keith J. Hendren, Bryan W. Posner, Simon R. Lancaster-Larocque, Alex J. Lehmann
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Patent number: 11694641Abstract: Systems and methods for preserving a pulse width modulation (PWM) resolution while increasing the frequency of a pulse width modulation (PWM) clock are provided. An electronic display backlight system may include a backlight element and backlight dimming circuitry. The backlight element may be driven according to a pulse width modulation (PWM) signal over a PWM clock cycle equal to a multiple M of a baseline PWM clock frequency associated with a baseline PWM resolution. The backlight dimming circuitry may receive a brightness code of the baseline PWM resolution and generate the PWM signal at least in part by dividing the brightness code by M.Type: GrantFiled: July 21, 2022Date of Patent: July 4, 2023Assignee: Apple Inc.Inventors: Behzad Mohtashemi, Mohammad J Navabi-Shirazi, Feng Guo, Omar Alnaggar, Venkataraman V Iyer, Jingdong Chen, Yang Zhang, Ming Gu, Asif Hussain
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Patent number: 11689094Abstract: Power converters can include a plurality of switching devices and a combination of one or more inductors and one or more flying capacitors. Both boost and buck converters may employ such topologies, and can achieve high efficiency and small size in at least some applications, including those with high conversion ratios. A control circuit can generate a first pair of complementary gate drive signals to drive a first complementary switch pairs and a second pair of complementary gate drive signals to drive a second complementary switch pair. The control circuit can vary a phase shift between the first pair of complementary gate drive signals and the second pair of complementary gate drive signals to regulate the flying capacitor voltage.Type: GrantFiled: May 19, 2021Date of Patent: June 27, 2023Assignee: Apple Inc.Inventors: Zhiyuan Hu, Jingdong Chen, Yanhui Xie, Asif Hussain
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Publication number: 20230100812Abstract: Systems and methods for preserving a pulse width modulation (PWM) resolution while increasing the frequency of a pulse width modulation (PWM) clock are provided. An electronic display backlight system may include a backlight element and backlight dimming circuitry. The backlight element may be driven according to a pulse width modulation (PWM) signal over a PWM clock cycle equal to a multiple M of a baseline PWM clock frequency associated with a baseline PWM resolution. The backlight dimming circuitry may receive a brightness code of the baseline PWM resolution and generate the PWM signal at least in part by dividing the brightness code by M.Type: ApplicationFiled: July 21, 2022Publication date: March 30, 2023Inventors: Behzad Mohtashemi, Mohammad J Navabi-Shirazi, Feng Guo, Omar Alnaggar, Venkataraman V Iyer, Jingdong Chen, Yang Zhang, Ming Gu, Asif Hussain
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Publication number: 20230085621Abstract: A display device include a first light emitting diode (LED), a second LED, and at least one processor of a driver. The processor drives the first LED and the second LED. The processor determines a first pulse width associated with the first LED and a second pulse width associated with the second LED based on a level of brightness to be emitted by the first LED and the second LED. The processor also receives a gap clock and determines a first pulse start time and a first pulse end time for the first LED based on the first pulse width. Moreover, the processor determines a second pulse start time and a second pulse end time for the second LED based on the first pulse end time, the second pulse width, and/or the gap clock, in which the first pulse end time and the second pulse end time are different.Type: ApplicationFiled: June 29, 2022Publication date: March 23, 2023Inventors: Behzad Mohtashemi, Asif Hussain, Feng Guo, Jingdong Chen, Ming Gu, Mohammad J. Navabi-Shirazi, Omar Alnaggar, Venkataraman V. Iyer, Yang Zhang
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Patent number: 11579901Abstract: Systems and methods provide for execution of different provisioning engines within a resource provider environment. A user may submit a request to provision one or more resources using a particular provisioning engine, which may include a provisioning engine that is non-native to the resource provider environment. A control plane may evaluate and transmit requests to the provisioning engine executing within the resource provider environment. Operations associated with the provisioning engine may be executed and stored within a data store, which may be processed upon completion and made accessible.Type: GrantFiled: June 30, 2021Date of Patent: February 14, 2023Assignee: Amazon Technologies, Inc.Inventors: Amjad Hussain, Diwakar Chakravarthy, Asif Hussain, Rahul Garg, Victoria Michelle Jacobson, Sunil Jagadish, James Hood
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Publication number: 20220376616Abstract: Power converters can include a plurality of switching devices and a combination of one or more inductors and one or more flying capacitors. Both boost and buck converters may employ such topologies, and can achieve high efficiency and small size in at least some applications, including those with high conversion ratios. A control circuit can generate a first pair of complementary gate drive signals to drive a first complementary switch pairs and a second pair of complementary gate drive signals to drive a second complementary switch pair. The control circuit can vary a phase shift between the first pair of complementary gate drive signals and the second pair of complementary gate drive signals to regulate the flying capacitor voltage.Type: ApplicationFiled: May 19, 2021Publication date: November 24, 2022Inventors: Zhiyuan Hu, Jingdong Chen, Yanhui Xie, Asif Hussain
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Publication number: 20220326777Abstract: A portable computer includes a display portion comprising a display and a base portion pivotally coupled to the display portion. The base portion may include a bottom case and a top case, formed from a dielectric material, coupled to the bottom case. The top case may include a top member defining a top surface of the base portion and a sidewall integrally formed with the top member and defining a side surface of the base portion. The portable computer may also include a sensing system including a first sensing system configured to determine a location of a touch input applied to the top surface of the base portion and a second sensing system configured to determine a force of the touch input.Type: ApplicationFiled: June 17, 2022Publication date: October 13, 2022Inventors: Christiaan A. Ligtenberg, Brett W. Degner, Ron A. Hopkinson, Asif Hussain, Dinesh C. Mathew, Mikael M. Silvanto, Chang Zhang, Zheng Gao, Robert Y. Cao, Keith J. Hendren, Bryan W. Posner, Simon R. Lancaster-Larocque, Alex J. Lehmann
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Publication number: 20220224219Abstract: A battery powered electronic device can include a battery to power one or more loads, a first DC-DC converter having an input coupled to the battery and an output, and a second DC-DC converter cascaded with the first DC-DC converter and coupled to a second load subject to pulsed operation. The first and second converters may be configured so as to isolate the one or more loads from transients associated with the pulsed operation of the second load. The second converter may have an input coupled to the output of the first converter and an output coupled to the second load. Alternatively, the second converter may be a bidirectional converter having first terminals coupled to the output of the first converter and second terminals coupled to an energy storage device.Type: ApplicationFiled: October 14, 2021Publication date: July 14, 2022Inventors: Yanhui Xie, Asif Hussain, Jingdong Chen, Zhiyuan Hu
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Patent number: 11366523Abstract: A portable computer includes a display portion comprising a display and a base portion pivotally coupled to the display portion. The base portion may include a bottom case and a top case, formed from a dielectric material, coupled to the bottom case. The top case may include a top member defining a top surface of the base portion and a sidewall integrally formed with the top member and defining a side surface of the base portion. The portable computer may also include a sensing system including a first sensing system configured to determine a location of a touch input applied to the top surface of the base portion and a second sensing system configured to determine a force of the touch input.Type: GrantFiled: May 13, 2020Date of Patent: June 21, 2022Assignee: APPLE INC.Inventors: Christiaan A. Ligtenberg, Brett W. Degner, Ron A. Hopkinson, Asif Hussain, Dinesh C. Mathew, Mikael M. Silvanto, Chang Zhang, Zheng Gao, Robert Y. Cao, Keith J. Hendren, Bryan W. Posner, Simon R. Lancaster-Larocque, Alex J. Lehmann
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Publication number: 20220061135Abstract: Aspects of the subject technology relate to electronic devices having a display. The display includes a channel of light emitting diodes (LEDs) having controllable brightness levels and control circuitry coupled to the channel of LEDs. The control circuitry provides a pulse width modulated (PWM) signal having a duty cycle to control the brightness levels. An adaptive headroom control circuitry is configured to sense a headroom voltage signal for the channel of LEDs and apply a first time period for blanking the headroom voltage signal during the first time period that is associated with a settling time for the headroom voltage signal.Type: ApplicationFiled: April 23, 2021Publication date: February 24, 2022Inventors: Ming Gu, Yanhui Xie, Jingdong Chen, Asif Hussain, Behzad Mohtashemi, Mohammad Jafar Navabi-Shirazi, Linda A. Kamas, Alejandro Lara Ascorra
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Publication number: 20220044643Abstract: Aspects of the subject technology relate to an electronic device with a display. The display includes a plurality of light-emitting diodes and first and second driver circuits coupled to the plurality of light-emitting diodes. The first driver circuit is configured to receive a first pulse-width modulated (PWM) signal to control a first current mirror branch and the second driver circuit to receive a second PWM signal to control a second current mirror branch to provide an extra N bits of resolution for controlling the plurality of the light-emitting diodes.Type: ApplicationFiled: April 6, 2021Publication date: February 10, 2022Inventors: Ming Gu, Asif Hussain, Zhiyuan Hu, Marc Albrecht, Jingdong Chen, Yanhui Xie, Mohammad Jafar Navabi-Shirazi, Behzad Mohtashemi
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Patent number: 11099649Abstract: A device includes a display portion that includes a display housing and a display within the display housing. The device also includes a base portion flexibly coupled to the display portion and comprising a glass member defining a keyboard region configured to receive user input, a first haptic actuator configured to produce a first haptic output at a first area of the keyboard region, and a second haptic actuator configured to produce a second haptic output at a second area of the keyboard region that is different from the first area.Type: GrantFiled: March 28, 2018Date of Patent: August 24, 2021Assignee: APPLE INC.Inventors: Christiaan A. Ligtenberg, Brett W. Degner, Ron A. Hopkinson, Asif Hussain, Dinesh C. Mathew, Mikael M. Silvanto, Chang Zhang, Zheng Gao, Robert Y. Cao, Keith J. Hendren, Bryan W. Posner, Simon R. Lancaster-Larocque, Alex J. Lehmann
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Patent number: 10936107Abstract: Components associated with receiving user touch input, receiving user force input, and providing haptic output interface are integrated into a unified input/output interface that includes a transducer substrate formed with a monolithic or multi-layer body having a number of electrodes disposed on surfaces thereof. Electrodes are selected by a controller to provide touch input sensing, force input sensing, and haptic output.Type: GrantFiled: December 6, 2019Date of Patent: March 2, 2021Assignee: Apple Inc.Inventors: Supratik Datta, Christiaan A. Ligtenberg, Karan S. Jain, Asif Hussain
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Patent number: 10877314Abstract: A display may have display layers that form an array of pixels. The array of pixels may be illuminated using a backlight unit. The backlight unit may include multiple strings of light-emitting diodes (LEDs). The multiple LED strings may be controlled by one or more backlight driver integrated circuits (ICs). In a multi-driver IC architecture, an enable signal may be used to set a desired phase delay between the multiple ICs. One or more of the LED strings may exhibit a short fault. Depending on the number of faulty LED strings, the backlight unit can selectively throttle the maximum brightness of the display. The LED strings may receive an output voltage from a DC/DC converter and may be driven using a current driver. The DC/DC converter may be controlled by a headroom feedforward control circuit to ensure sufficient headroom for the current driver while suppressing acoustic noise.Type: GrantFiled: May 21, 2019Date of Patent: December 29, 2020Assignee: Apple Inc.Inventors: Jingdong Chen, Asif Hussain, Mohammad J. Navabi-Shirazi, Behzad Mohtashemi, Yanhui Xie
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Patent number: 10871828Abstract: A portable computer includes a display portion comprising a display, a base portion pivotally coupled to the display portion and including a glass top case. The glass top case defines an exterior surface and a keyboard opening through the glass top case from the exterior surface to an interior surface. The portable computer further includes a keyboard positioned at least partially within the keyboard opening and comprising a substrate, a key configured to move relative to the substrate, and a fabric cover disposed over the key and defining a user interface surface of the key.Type: GrantFiled: March 28, 2018Date of Patent: December 22, 2020Assignee: APPLE INCInventors: Christiaan A. Ligtenberg, Brett W. Degner, Ron A. Hopkinson, Asif Hussain, Dinesh C. Mathew, Mikael M. Silvanto, Chang Zhang, Zheng Gao, Robert Y. Cao, Keith J. Hendren, Simon R. Lancaster-Larocque
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Publication number: 20200278747Abstract: A portable computer includes a display portion comprising a display and a base portion pivotally coupled to the display portion. The base portion may include a bottom case and a top case, formed from a dielectric material, coupled to the bottom case. The top case may include a top member defining a top surface of the base portion and a sidewall integrally formed with the top member and defining a side surface of the base portion. The portable computer may also include a sensing system including a first sensing system configured to determine a location of a touch input applied to the top surface of the base portion and a second sensing system configured to determine a force of the touch input.Type: ApplicationFiled: May 13, 2020Publication date: September 3, 2020Inventors: Christiaan A. Ligtenberg, Brett W. Degner, Ron A. Hopkinson, Asif Hussain, Dinesh C. Mathew, Mikael M. Silvanto, Chang Zhang, Zheng Gao, Robert Y. Cao, Keith J. Hendren, Bryan W. Posner, Simon R. Lancaster-Larocque, Alex J. Lehmann