Patents by Inventor Jay Yu Jae Choi

Jay Yu Jae Choi 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).

  • Patent number: 10628172
    Abstract: Systems and methods for using distributed Universal Serial Bus (USB) host drivers are disclosed. In one aspect, USB packet processing that was historically done on an application processor is moved to a distributed USB driver running in parallel on a low-power processor such as a digital signal processor (DSP). While a DSP is particularly contemplated, other processors may also be used. Further, a communication path is provided from the low-power processor to USB hardware that bypasses the application processor. Bypassing the application processor in this fashion allows the application processor to remain in a sleep mode for longer periods of time instead of processing digital data received from the low-power processor or the USB hardware. Further, by bypassing the application processor, latency is reduced, which improves the listener experience.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: April 21, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Ameya Kulkarni, Andrew Cheung, Jay Yu Jae Choi, Daniel Hyongkyu Kim, Hemant Kumar, Vamsi Krishna Samavedam
  • Publication number: 20200034107
    Abstract: Systems and method for inferring polling rates for Universal Serial Bus (USB) endpoints include a driver in an audio device that measures a feedback polling interval from a host device for a plurality of periods. Based on observed periods, the audio device infers a polling period by the host device and adjusts when a feedback signal is sent to conform to the inferred polling period. By adjusting the audio device based on behavior of the operating system, the audio device may work with multiple operating systems, providing greater flexibility for an end user and also reducing the likelihood of artifacts degrading the user experience.
    Type: Application
    Filed: July 23, 2019
    Publication date: January 30, 2020
    Inventors: Ameya Kulkarni, Jay Yu Jae Choi
  • Patent number: 10199848
    Abstract: Apparatuses, methods, and systems for enabling higher current charging of Universal Serial Bus (USB) Specification Revision 2.0 (USB 2.0) portable electronic devices from USB 3.x hosts are disclosed. In one aspect, a USB 2.0 controller is provided in a USB 2.0 portable device. A USB 3.x controller is provided in a USB 3.x host. The USB 2.0 controller is configured to draw a higher charging current than specified in USB 2.0 for the USB 2.0 portable device over a USB 2.0 cable. In order to draw the higher charging current without violating USB 2.0, the USB 2.0 controller is configured to use one or more reserved elements in an existing USB 2.0 descriptor(s) or bitmap(s) to indicate a higher charging current request from the USB 2.0 controller.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: February 5, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Devdutt Patnaik, Jay Yu Jae Choi, Terrence Brian Remple
  • Publication number: 20170371681
    Abstract: Systems and methods for using distributed Universal Serial Bus (USB) host drivers are disclosed. In one aspect, USB packet processing that was historically done on an application processor is moved to a distributed USB driver running in parallel on a low-power processor such as a digital signal processor (DSP). While a DSP is particularly contemplated, other processors may also be used. Further, a communication path is provided from the low-power processor to USB hardware that bypasses the application processor. Bypassing the application processor in this fashion allows the application processor to remain in a sleep mode for longer periods of time instead of processing digital data received from the low-power processor or the USB hardware. Further, by bypassing the application processor, latency is reduced, which improves the listener experience.
    Type: Application
    Filed: June 23, 2017
    Publication date: December 28, 2017
    Inventors: Ameya Kulkarni, Andrew Cheung, Jay Yu Jae Choi, Daniel Hyongkyu Kim, Hemant Kumar, Vamsi Krishna Samavedam
  • Patent number: 9824046
    Abstract: A method of triggering a desired operating mode in a universal serial bus (USB)-compatible client device is provided. A USB-compatible client device detects that it has been coupled to a USB-compatible host device via a USB bus. The USB-compatible client device attempts to pull a data line of the USB bus high. The USB-compatible client device then ascertains that the data line remains pulled low, thereby indicating that the USB-compatible client device should enter a first mode of operation. The USB-compatible client device operates according to the first mode of operation.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: November 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Terrence Brian Remple, Devdutt Patnaik, Jay Yu Jae Choi, Yanru Li
  • Patent number: 9470644
    Abstract: Electronic devices are adapted to facilitate detection of a type of USB charger to which an electronic device is connected. According to one example, an electronic device can apply a current source to a data line of a USB plug coupled to a USB port. A determination can be made whether the data line has gone to a LOW state or remained at a HIGH state after a predetermined period of time. If the data line has gone to a LOW state, the USB port may be identified as a downstream port, such as a standard downstream port (SDP) or a charging downstream port (CDP). If the data line has remained at the HIGH state, the USB port may be identified as a dedicated charging port (DCP), no matter if it is compliant or non-compliant with the BC 1.2 spec. Other aspects, embodiments, and features are also included.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: October 18, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Terrence Brian Remple, Devdutt Patnaik, Jay Yu Jae Choi
  • Patent number: 9448259
    Abstract: Apparatuses and methods to distinguish proprietary, non-floating and floating chargers for regulating charging current are disclosed. In one aspect, a charger detection circuit is provided in a portable electronic device. The charger detection circuit is configured to detect whether a connected Universal Serial Bus (USB) charger is compliant with a USB battery charging specification. If the connected USB charger is non-compliant with the USB battery charging specification, the charger detection circuit is configured to further detect if the non-complaint USB charger is a non-compliant floating USB charger or a non-compliant proprietary USB charger. If the connected USB charger is determined to be a non-compliant proprietary USB charger, the portable electronic device can be configured to draw up to a maximum charging current according to the USB battery charging specification.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: September 20, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ameya Kulkarni, Devdutt Patnaik, Terrence Brian Remple, Jay Yu Jae Choi, Madjid Abdul Hamidi
  • Patent number: 9418033
    Abstract: A method of triggering a desired operating mode in a universal serial bus (USB)-compatible client device is provided. A USB-compatible client device detects that it has been coupled to a USB-compatible host device via a USB bus. The USB-compatible client device attempts to pull a data line of the USB bus high. The USB-compatible client device then ascertains that the data line remains pulled low, thereby indicating that the USB-compatible client device should enter a first mode of operation. The USB-compatible client device operates according to the first mode of operation.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: August 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Terrence Brian Remple, Devdutt Patnaik, Jay Yu Jae Choi, Yanru Li
  • Patent number: 9410992
    Abstract: Apparatuses and methods to distinguish proprietary, non-floating and floating chargers for regulating charging current are disclosed. In one aspect, a charger detection circuit is provided in a portable electronic device. The charger detection circuit is configured to detect whether a connected Universal Serial Bus (USB) charger is compliant with a USB battery charging specification. If the connected USB charger is non-compliant with the USB battery charging specification, the charger detection circuit is configured to further detect if the non-complaint USB charger is a non-compliant floating USB charger or a non-compliant proprietary USB charger. If the connected USB charger is determined to be a non-compliant proprietary USB charger, the portable electronic device can be configured to draw up to a maximum charging current according to the USB battery charging specification.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: August 9, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ameya Kulkarni, Devdutt Patnaik, Terrence Brian Remple, Jay Yu Jae Choi, Madjid Abdul Hamidi
  • Publication number: 20160028250
    Abstract: Apparatuses, methods, and systems for enabling higher current charging of Universal Serial Bus (USB) Specification Revision 2.0 (USB 2.0) portable electronic devices from USB 3.x hosts are disclosed. In one aspect, a USB 2.0 controller is provided in a USB 2.0 portable device. A USB 3.x controller is provided in a USB 3.x host. The USB 2.0 controller is configured to draw a higher charging current than specified in USB 2.0 for the USB 2.0 portable device over a USB 2.0 cable. In order to draw the higher charging current without violating USB 2.0, the USB 2.0 controller is configured to use one or more reserved elements in an existing USB 2.0 descriptor(s) or bitmap(s) to indicate a higher charging current request from the USB 2.0 controller.
    Type: Application
    Filed: July 28, 2014
    Publication date: January 28, 2016
    Inventors: Devdutt Patnaik, Jay Yu Jae Choi, Terrence Brian Remple
  • Publication number: 20160011238
    Abstract: Apparatuses and methods to distinguish proprietary, non-floating and floating chargers for regulating charging current are disclosed. In one aspect, a charger detection circuit is provided in a portable electronic device. The charger detection circuit is configured to detect whether a connected Universal Serial Bus (USB) charger is compliant with a USB battery charging specification. If the connected USB charger is non-compliant with the USB battery charging specification, the charger detection circuit is configured to further detect if the non-complaint USB charger is a non-compliant floating USB charger or a non-compliant proprietary USB charger. If the connected USB charger is determined to be a non-compliant proprietary USB charger, the portable electronic device can be configured to draw up to a maximum charging current according to the USB battery charging specification.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 14, 2016
    Inventors: Ameya Kulkarni, Devdutt Patnaik, Terrence Brian Remple, Jay Yu Jae Choi, Madjid Abdul Hamidi
  • Publication number: 20150137791
    Abstract: Electronic devices are adapted to facilitate detection of a type of USB charger to which an electronic device is connected. According to one example, an electronic device can apply a current source to a data line of a USB plug coupled to a USB port. A determination can be made whether the data line has gone to a LOW state or remained at a HIGH state after a predetermined period of time. If the data line has gone to a LOW state, the USB port may be identified as a downstream port, such as a standard downstream port (SDP) or a charging downstream port (CDP). If the data line has remained at the HIGH state, the USB port may be identified as a dedicated charging port (DCP), no matter if it is compliant or non-compliant with the BC 1.2 spec. Other aspects, embodiments, and features are also included.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 21, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Terrence Brian Remple, Devdutt Patnaik, Jay Yu Jae Choi
  • Publication number: 20150032908
    Abstract: A method of triggering a desired operating mode in a universal serial bus (USB)-compatible client device is provided. A USB-compatible client device detects that it has been coupled to a USB-compatible host device via a USB bus. The USB-compatible client device attempts to pull a data line of the USB bus high. The USB-compatible client device then ascertains that the data line remains pulled low, thereby indicating that the USB-compatible client device should enter a first mode of operation. The USB-compatible client device operates according to the first mode of operation.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Inventors: Terrence Brian Remple, Devdutt Patnaik, Jay Yu Jae Choi, Yanru Li
  • Publication number: 20150032909
    Abstract: A method of triggering a desired operating mode in a universal serial bus (USB)-compatible client device is provided. A USB-compatible client device detects that it has been coupled to a USB-compatible host device via a USB bus. The USB-compatible client device attempts to pull a data line of the USB bus high. The USB-compatible client device then ascertains that the data line remains pulled low, thereby indicating that the USB-compatible client device should enter a first mode of operation. The USB-compatible client device operates according to the first mode of operation.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Inventors: Terrence Brian Remple, Devdutt Patnaik, Jay Yu Jae Choi, Yanru Li