公开(公告)号：US11907475B2

公开(公告)日：2024-02-20

申请号：US17448866

申请日：2021-09-24

Applicant: Apple Inc.

Inventor： Hojjat Seyed Mousavi ,  Behrooz Shahsavari ,  Bongsoo Suh ,  Utkarsh Gaur ,  Nima Ferdosi ,  Baboo V. Gowreesunker

IPC: G06F3/041 ,  G06F3/0354 ,  G06N3/04 ,  G06F3/044 ,  G06N20/20 ,  G06F18/214

CPC classification number: G06F3/0418 ,  G06F3/03545 ,  G06F3/0446 ,  G06F3/04162 ,  G06F3/04166 ,  G06F18/214 ,  G06N3/04 ,  G06N20/20 ,  G06F3/0442 ,  G06F2203/04101

Abstract: In some examples, an electronic device can use machine learning techniques, such as convolutional neural networks, to estimate the distance between a stylus tip and a touch sensitive surface (e.g., stylus z-height). A subset of stylus data sensed at electrodes closest to the location of the stylus at the touch sensitive surface including data having multiple phases and frequencies can be provided to the machine learning algorithm. The estimated stylus z-height can be compared to one or more thresholds to determine whether or not the stylus is in contact with the touch sensitive surface. In some examples, the electronic device can use machine learning techniques to estimate the (x, y) position and/or tilt and/or azimuth angles of the stylus tip at the touch sensitive surface based on a subset of stylus data.

公开(公告)号：US09651405B1

公开(公告)日：2017-05-16

申请号：US14640376

申请日：2015-03-06

Applicant: Apple Inc.

Inventor： Baboo V. Gowreesunker ,  Joseph William Colosimo ,  Vladimir Fedorov

IPC: G01D5/347

CPC classification number: G01D5/3473 ,  G01D5/34715 ,  G01D5/34776 ,  G05G9/047 ,  G06F3/0362

Abstract: A light source in a rotary optical encoder can illuminate a pattern on a rotatable shaft and an optical sensor can detect either the light that is reflected or transmitted based on the pattern. A sampling rate of the optical sensor is dynamically adjusted based on a rotational speed of the rotatable shaft. A pulse rate of the light source may also be dynamically adjusted based on the sampling rate of the optical sensor.

公开(公告)号：US20200167006A1

公开(公告)日：2020-05-28

申请号：US16689947

申请日：2019-11-20

Applicant: Apple Inc.

Inventor： Colin M. Ely ,  Fletcher R. Rothkopf ,  Baboo V. Gowreesunker ,  Prashanth S. Holenarsipur ,  Serhan O. Isikman ,  Anna-Katrina Shedletsky

IPC: G06F3/02 ,  G06F3/042 ,  G06F1/16 ,  G06F3/0362 ,  G06F3/041 ,  G06F3/038 ,  G06F1/3231

Abstract: Disclosed herein is an electronic device having a proximity sensor for determining whether an object, such as a user's finger, is in proximity to or in contact with an input mechanism of the electronic device.

公开(公告)号：US10066970B2

公开(公告)日：2018-09-04

申请号：US14796915

申请日：2015-07-10

Applicant: Apple Inc.

Inventor： Baboo V. Gowreesunker ,  Wayne C. Westerman ,  Prashanth S. Holenarsipur

IPC: H01J40/14 ,  G01D5/347

Abstract: Embodiments of the present disclosure provide a method and system for dynamically controlling a current that is applied to a light source of an optical encoder.

公开(公告)号：US20160061636A1

公开(公告)日：2016-03-03

申请号：US14796915

申请日：2015-07-10

Applicant: Apple Inc.

Inventor： Baboo V. Gowreesunker ,  Wayne C. Westerman ,  Prashanth S. Holenarsipur

IPC: G01D5/30

CPC classification number: G01D5/3473 ,  G01D5/34715

Abstract: Embodiments of the present disclosure provide a method and system for dynamically controlling a current that is applied to a light source of an optical encoder.

Abstract translation: 本公开的实施例提供了一种用于动态地控制应用于光学编码器的光源的电流的方法和系统。

公开(公告)号：US12197668B2

公开(公告)日：2025-01-14

申请号：US18450771

申请日：2023-08-16

Applicant: Apple Inc.

Inventor： Dor Shaviv ,  Behrooz Shahsavari ,  David S. Graff ,  Baboo V. Gowreesunker ,  Nima Ferdosi ,  Yash S. Agarwal ,  Sai Zhang

IPC: G06F3/041

Abstract: Touch sensor panels/screens can include a first region having a plurality of touch electrodes and a second region without touch electrodes. In some examples, to improve touch sensing performance, a first algorithm or a second algorithm is applied to determine whether an object corresponding to the touch patch is in contact with the touch screen. Whether to apply the first algorithm or the second algorithm is optionally dependent on the location of the touch patch.

公开(公告)号：US11287926B1

公开(公告)日：2022-03-29

申请号：US17161499

申请日：2021-01-28

Applicant: Apple Inc.

Inventor： Behrooz Shahsavari ,  Bongsoo Suh ,  Utkarsh Gaur ,  Nima Ferdosi ,  Baboo V. Gowreesunker

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044 ,  G06K9/62 ,  G06N3/04

Abstract: In some examples, an electronic device can use machine learning techniques, such as convolutional neural networks, to estimate the distance between a stylus tip and a touch sensitive surface (e.g., stylus z-height). A subset of stylus data sensed at electrodes closest to the location of the stylus at the touch sensitive surface including data having multiple phases and frequencies can be provided to the machine learning algorithm. The estimated stylus z-height can be compared to one or more thresholds to determine whether or not the stylus is in contact with the touch sensitive surface.

公开(公告)号：US11025098B2

公开(公告)日：2021-06-01

申请号：US15875287

申请日：2018-01-19

Applicant: Apple Inc.

Inventor： Behrooz Shahsavari ,  Sneha Kadetotad ,  Weiyu Huang ,  Baboo V. Gowreesunker

IPC: H02J50/60 ,  H02J7/02 ,  H02J50/12 ,  G08B21/18 ,  G06K9/62 ,  G01R27/26 ,  H01F38/14 ,  H04B5/00 ,  G08B3/10 ,  G08B5/22

Abstract: A wireless power transmission system has a wireless power receiving device with a wireless power receiving coil that is located on a charging surface of a wireless power transmitting device with a wireless power transmitting coil array. Control circuitry in the wireless power transmitting device may use inverter circuitry to supply alternating-current signals to coils in the coil array, thereby transmitting wireless power signals. The control circuitry may also be used to detect foreign objects on the coil array such as metallic objects without wireless power receiving coils. For example, control circuitry may use inductance measurements from the coils in the coil array to determine a probability value indicative of whether a foreign object is present on the charging surface. The control circuitry may compare the probability value to a threshold and take suitable action in response to the comparison.

公开(公告)号：US10236725B1

公开(公告)日：2019-03-19

申请号：US15875418

申请日：2018-01-19

Applicant: Apple Inc.

Inventor： Behrooz Shahsavari ,  Weiyu Huang ,  Sneha Kadetotad ,  Baboo V. Gowreesunker

IPC: H01M10/46 ,  H02J50/12 ,  H02J50/60 ,  H02J50/40 ,  H02J7/02 ,  H02J7/00 ,  H02J7/04 ,  H02J50/80

Abstract: A wireless power transmission system has a wireless power receiving device with a wireless power receiving coil that is located on a charging surface of a wireless power transmitting device with a wireless power transmitting coil array. Control circuitry in the wireless power transmitting device may use inverter circuitry to supply alternating-current signals to coils in the coil array, thereby transmitting wireless power signals. The control circuitry may also be used to detect foreign objects on the coil array such as metallic objects without wireless power receiving coils. For example, control circuitry may use inductance measurements from the coils in the coil array to identify segments of the coil array that correspond to potential wireless power receiving devices. The control circuitry may control wireless power transmission based on a comparison between the number of identified segments corresponding to potential wireless power receiving devices and a number of received device-identifiers.

公开(公告)号：US10797534B2

公开(公告)日：2020-10-06

申请号：US15875127

申请日：2018-01-19

Applicant: Apple Inc.

Inventor： Behrooz Shahsavari ,  Weiyu Huang ,  Sneha Kadetotad ,  Baboo V. Gowreesunker ,  Jacob Mattingley

IPC: H02J50/60 ,  H02J50/12 ,  G01R27/26 ,  H02J50/40 ,  H02J7/02 ,  H01F38/14 ,  H02J50/90

Abstract: A wireless power transmission system has a wireless power receiving device that is located on a charging surface of a wireless power transmitting device. The wireless power receiving device has a wireless power receiving coil and the wireless power transmitting device has a wireless power transmitting coil array. Signal measurement circuitry coupled to the coil array may make measurements while the control circuitry uses the inverter circuitry to apply excitation signals to each of the coils. Foreign objects on the coil array such as metallic objects without wireless power receiving coils can be detected using foreign object detection. When multiple wireless power receiving devices are present on the wireless power transmitting device, steps may be taken to isolate measurements from the coils associated with each wireless power receiving device. Foreign object detection may then be performed on these modified measurements.