公开(公告)号：US20180226838A1

公开(公告)日：2018-08-09

申请号：US15424142

申请日：2017-02-03

Applicant: QUALCOMM Incorporated

Inventor： Arvind GOVINDARAJ

IPC: H02J50/15 ,  A61B8/08 ,  A61B8/00 ,  A61M5/142 ,  A61N1/372 ,  A61N1/378 ,  G01S15/42

CPC classification number: H02J50/15 ,  A61B8/0841 ,  A61B8/4488 ,  A61B8/56 ,  A61M5/14276 ,  A61M2205/353 ,  A61M2205/50 ,  A61M2205/825 ,  A61N1/3605 ,  A61N1/362 ,  A61N1/37217 ,  A61N1/3787 ,  G01S7/54 ,  G01S15/42

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for detecting and powering a wireless receiver. An exemplary method generally includes scanning an area using a first plurality of ultrasonic pressure waves emitted from ultrasonic transducers on an ultrasonic phased array of ultrasonic transducers, detecting a first device in the area and determining a location of the first device in the area based on the scanning, and delivering a second plurality of ultrasonic pressure waves to the location of the first device in the area for powering the first device using the ultrasonic phased array of ultrasonic transducers.

公开(公告)号：US20190073223A1

公开(公告)日：2019-03-07

申请号：US15695733

申请日：2017-09-05

Applicant: QUALCOMM Incorporated

Inventor： Richard SENIOR ,  Raghuveer RAGHAVENDRA ,  Gurkanwal BRAR ,  Arvind GOVINDARAJ

IPC: G06F9/38 ,  G06F12/0855

Abstract: Systems and methods for branch prediction include detecting a subset of branch instructions which are not fixed direction branch instructions, and for this subset of branch instructions, utilizing complex branch prediction mechanisms such as a neural branch predictor. Detecting the subset of branch instructions includes using a state machine to determine the branch instructions whose outcomes change between a taken direction and a not-taken direction in separate instances of their execution. For the remaining branch instructions which are fixed direction branch instructions, the complex branch prediction techniques are avoided.

公开(公告)号：US20170256956A1

公开(公告)日：2017-09-07

申请号：US15061585

申请日：2016-03-04

Applicant: QUALCOMM Incorporated

Inventor： Linda Stacey IRISH ,  William Henry VON NOVAK, III ,  Arvind GOVINDARAJ ,  Khoi NGUYEN

IPC: H02J5/00 ,  H02J7/02 ,  H02M7/217

CPC classification number: H02J5/00 ,  H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02M7/217 ,  H02M2007/2195 ,  Y02B70/1408

Abstract: A multi-level rectifier is presented that is suitable for use at high frequencies, including into MHz range such as in the 6.78 MHz band used for wireless power transfer. Depending on the amplitude of the input waveform, the rectifier can be operated in different modes. For lower input levels, the rectifier acts as a voltage doubler. For higher input levels, the impedance of the rectifier can be varied based on the input level. The rectifier is a synchronous rectifier with a front section and a back section, where the impedance is varied by changing the phase of the control signal of the back section relative to that of the front section.

公开(公告)号：US20180287405A1

公开(公告)日：2018-10-04

申请号：US15471521

申请日：2017-03-28

Applicant: QUALCOMM Incorporated

Inventor： Arvind GOVINDARAJ ,  Sumukh SHEVDE ,  Joseph MAALOUF

IPC: H02J7/00 ,  H02J7/02 ,  H02M3/158 ,  H02M1/44 ,  H02J50/10

Abstract: Techniques for wired and wireless charging of electronic devices are provided. An example of a method for charging a device according to the disclosure includes receiving a signal from a power source with an electronic circuit, such that the electronic circuit includes a synchronous rectifier comprising a first phase leg and a second phase leg, utilizing the first phase leg to implement synchronous rectification and the second phase leg to implement a single phase buck converter when the signal is a wireless signal received from the power source, utilizing the first phase leg and the second phase leg to implement a multi-phase buck converter when the signal is received from a wired power source, and providing an output signal with the electronic circuit.