公开(公告)号：US11122519B1

公开(公告)日：2021-09-14

申请号：US16216445

申请日：2018-12-11

Applicant: Amazon Technologies, Inc.

Inventor： Ravi Ichapurapu ,  Morris Yuanhsiang Hsu ,  Sameet Ramakrishnan ,  Duck Ho Bae

IPC: H04W52/20 ,  H04W52/24 ,  H04W4/80 ,  H04W72/04 ,  H04W88/12 ,  H04W84/12

Abstract: An electronic device includes a first communication controller and a second communication controller. The first and second communication controller are configured to communicate wirelessly using respective antennas. The electronic device includes a processor that is configured to execute instructions for determining that the first controller is transmitting a first radio frequency signal, and setting a transmit power of the first controller to a first transmit power value. The processor is configured to execute instructions for determining a duty cycle of the first controller is greater than a packet loss threshold associated with the second controller, and setting the transmit power of the first controller to a second transmit power value. The second transmit power value is less than the first transmit power value.

公开(公告)号：US09628199B1

公开(公告)日：2017-04-18

申请号：US15004199

申请日：2016-01-22

Applicant: Amazon Technologies, Inc.

Inventor： Mudit Sunilkumar Khasgiwala ,  Akshay Mohan ,  Jagan Vaidyanathan Rajagopalan ,  Duck Ho Bae

IPC: H04B1/10 ,  H04B15/00 ,  H04B15/02 ,  H04B1/00 ,  H04B1/401

CPC classification number: H04B15/02

Abstract: A processing device detects an occurrence of the first set of use conditions associated with a power supply line coupled between a power source and a power sink in a user device. The processing device sets a tunable decoupling capacitor on the power supply line to a first capacitance value to reduce a level of electromagnetic interference on the power supply line at a first frequency corresponding to the first capacitance value. When the processing device detects a change from the first set of use conditions associated with the power supply line to a second set of use conditions, the processing device sets the tunable decoupling capacitor to a second capacitance value to reduce a level of electromagnetic interference on the power supply line at a second frequency corresponding to the second capacitance value.

公开(公告)号：US09819991B1

公开(公告)日：2017-11-14

申请号：US15056954

申请日：2016-02-29

Applicant: Amazon Technologies, Inc.

Inventor： Jagan Vaidyanathan Rajagopalan ,  Akshay Mohan ,  Mudit Sunilkumar Khasgiwala ,  Duck Ho Bae

IPC: H04N7/00 ,  H04N11/00 ,  H04N21/426 ,  H04N5/21 ,  H04N21/4363

CPC classification number: H04N21/42607 ,  G09G5/006 ,  H04N5/21 ,  H04N5/44 ,  H04N21/43635

Abstract: A device is described. The device includes a data interface connector, an application processor, and interface circuitry. The application processor can receive signals via an antenna. The interface circuitry can be coupled between the application processor and the data interface connector. The data interface circuitry can determine a change in a signal property of one of the signals, the change being caused by an impedance mismatch between the data interface connector and a media consumption device. The data interface circuitry can also send the application processor a signal property setting corresponding with the change. The application processor can adjust the signal property of a subsequent one of the signals, in response to the signal property setting from the interface circuitry, to obtain an adjusted signal. The application processor can also send the adjusted signal to the media consumption device.