公开(公告)号：US20230231537A1

公开(公告)日：2023-07-20

申请号：US18187846

申请日：2023-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hangtian Hou ,  Bo Du ,  Peng Liu ,  Zongzhi Gao

IPC: H03H9/17 ,  H03H3/02 ,  H03H9/56

CPC classification number: H03H9/175 ,  H03H3/02 ,  H03H9/564 ,  H03H9/568 ,  H03H2003/025

Abstract: Disclosed are a resonator and a manufacturing method thereof, a filter, and an electronic device. The resonator includes a substrate, a Bragg reflection layer, and a piezoelectric layer that are sequentially stacked. A first electrode is disposed on a surface that is of the piezoelectric layer and that faces the Bragg reflection layer, a second electrode is disposed on a surface that is of the piezoelectric layer and that is away from the Bragg reflection layer, a border ring is disposed on a surface that is of the second electrode and that is away from the piezoelectric layer, and the resonator has a first resonance region and a second resonance region corresponding to the border ring.

公开(公告)号：US10419291B2

公开(公告)日：2019-09-17

申请号：US15328417

申请日：2014-07-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shenlong Yang ,  Bo Du ,  Xiaoya Zheng

IPC: G06F9/44 ,  H04L12/24 ,  G06F8/65 ,  H04L1/00 ,  H04L29/08 ,  H04Q11/00 ,  H04L29/06

Abstract: A terminal upgrade method and a related device are provided. The method includes: encapsulating, by an element management system (EMS), an upgrade version file supported by a type of terminal as a multicast program and storing the multicast program in a multicast server, or sending an upgrade version file supported by a type of terminal to a multicast server; establishing, by the EMS, a version-address mapping relationship; delivering, by the EMS, the version-address mapping relationship to a terminal; and delivering an upgrade start instruction to the terminal, to trigger the terminal to send a multicast program on-demand request to the multicast server, so that the terminal receives the multicast program that is stored in the multicast program storage address of the terminal and sent by the multicast server, and the terminal performs a version upgrade operation according to the received multicast program.