公开(公告)号：US20210185620A1

公开(公告)日：2021-06-17

申请号：US17188585

申请日：2021-03-01

Applicant: Apple Inc.

Inventor： Digvijay Arjunrao Jadhav ,  Indranil S. Sen ,  Jonathan C. King ,  Mohit Narang ,  Prathyusha Sangepu ,  Qiong Wu ,  Shrenik Milapchand ,  Vijay Gadde ,  Yu Chen

IPC: H04W52/26

Abstract: Multi-radio wireless network devices are capable of transmitting and/or receiving data from multiple radiofrequency (RF) networks at different bands. Total transmission power limitations may be in place due to, for example, safety reasons. As a result, active management of transmission power may be performed during simultaneous transmission in different bands and/or networks. In some embodiments, the management may take place on group-by-group basis and a network-by-network basis. Antennas may be grouped based on their relative positions and impact on radiation emitted by the devices.

公开(公告)号：US20230388162A1

公开(公告)日：2023-11-30

申请号：US17804476

申请日：2022-05-27

Applicant: Apple Inc.

Inventor： Lizhi Zhong ,  Vishal Varma ,  Yu Chen ,  Wenyi Jin

IPC: H04L25/03 ,  H04B1/10

CPC classification number: H04L25/03267 ,  H04B1/10

Abstract: A receiver circuit including mechanisms for analog channel equalization and channel adaptation is disclosed. The receiver includes a front-end circuit configured to generate a filtered signal by performing filtering of an incoming signal that includes a stream of data symbols. A sample recovery circuit configured to sample an equalized signal, based on the filtered signal, to generate a plurality of recovered data symbols. A decision feedback equalization (DFE) circuit configured to generate the feedback signal based on the plurality of recovered data symbols. A logic circuit is configured to cause adjustment to one or more filters in the front-end circuit based on the plurality of recovered data symbols.

公开(公告)号：US20210208621A1

公开(公告)日：2021-07-08

申请号：US16736776

申请日：2020-01-07

Applicant: Apple Inc.

Inventor： Meei-Ling Chiang ,  Dabin Zhang ,  Dennis M. Fischette, JR. ,  Shaobo Liu ,  Yu Chen ,  Samed Maltabas

IPC: G06F1/04

Abstract: Systems, apparatuses, and methods for implementing a hybrid asynchronous gray counter with a non-gray zone detector are described. A circuit includes an asynchronous gray counter coupled to control logic. The control logic programs the asynchronous gray counter to operate in different modes to perform various functions associated with a high-performance phase-locked loop (PLL). In a first mode, the asynchronous gray counter serves as a frequency detector to count oscillator cycles within a reference clock cycle. In a second mode, the asynchronous gray counter serves as a coarse phase detector to detect a phase error between a feedback clock and a reference clock. In a third mode, the asynchronous gray counter serves as a multi-modulus divider to divide an oscillator clock down to create a feedback clock. Using a single asynchronous gray counter for three separate functions reduces power consumption and area utilization.

公开(公告)号：US20190084005A1

公开(公告)日：2019-03-21

申请号：US15846809

申请日：2017-12-19

Applicant: Apple Inc.

Inventor： Lok Pui Calvin Tsang ,  Yu Chen ,  Qingguo Zhao ,  Weiqiang Fu ,  Hong Feng Wang ,  Chung Yin Au

IPC: B06B1/12 ,  H05K5/00

Abstract: An electronic device includes an enclosure, a display positioned with the enclosure and defining a front face of the electronic device, and a haptic actuator positioned within the enclosure. The haptic actuator includes a housing comprising a wall and a movable mass positioned within the housing and configured to move within the housing to cause the haptic actuator to produce a vibrational response. The vibrational response includes a first component within a frequency range and a second component outside of the frequency range and providing a haptic output portion of the vibrational response. The haptic actuator also includes a tuning feature incorporated with the wall and configured to reduce the first component of the vibrational response while substantially maintaining the haptic output portion of the vibrational response.