Huawei Technologies Co., Limited

Shanghai Bao Pharmaceuticals Co., Ltd.

Lin Lu

Hanyang Wang

Huiliang Xu

Guofei Diao

Haowen Xu

Chungwen Yang

Zhaocai Zeng

Zheng Wang

Zhen Zhu

Yanjun Liu

Fang-Ching Lee

Zhonghua Wang

Qingqiu Liu

Baoxia Li

Shijia Pi

Provided are a mutant of an immunoglobulin degrading enzyme IdeE, a protein comprising the mutant, and a use of a composition and a kit in preparation of a drug for reducing the level of IgG in a subject. The mutant has amino acid substitution, N-terminal truncated and/or C-terminal truncated on one or more of positions 8, 10, 24, 59, 97, and 280 of the amino acid sequence shown in SEQ ID NO: 2, and the mutant has the function of the immunoglobulin degrading enzyme IdeE, and has higher activity and thermal stability than wild-type IdeE.

Use of mutant of immunoglobulin degrading enzyme IdeE

This application provides a wireless headset, and relates to the field of TWS wireless headsets. The wireless headset includes a headset housing and a headset assembly accommodated in the headset housing. The headset assembly includes a microphone. The headset housing includes a bottom housing, the bottom housing includes a first bottom housing part and a second bottom housing part that are separated by using an insulating material, the first bottom housing part is a positive charging electrode, and the second bottom housing part is a negative charging electrode. A plurality of sound inlet holes are disposed on the bottom housing, and form microphone sound inlet channels communicating with each other. In the foregoing technical solutions, wind noise can be reduced, and call experience can be improved.

Wireless headset

A BLUETOOTH earphone includes an antenna, the antenna comprises an antenna radiator, a first connecting portion, a second connecting portion, and a third connecting portion. The antenna radiator is located on a first portion of a flexible printed circuit (FPC) which is disposed in the earphone handle portion. The first connecting portion is a main ground of the BLUETOOTH earphone. The second connecting portion, is located on the earphone handle portion, and comprises a ground point. The third connecting portion is located on the earphone handle portion, and is connected to a first position on the second connecting portion other than the ground point, the third connecting portion and the antenna radiator are spaced apart with a first gap, and the third connecting portion is coupled to the antenna radiator through the first gap.

Bluetooth earphone

A wireless headset includes a housing and a power system disposed in a cavity enclosed by the housing and configured to supply power to the wireless headset. The wireless headset further includes a first electrical connector and a second electrical connector disposed on the housing of the wireless headset and are respectively electrically connected to two electrodes of the power system. The housing includes a rod body and an earbud connected to a top of the rod body, wherein the first electrical connector is located at a bottom end of the rod body, and the second electrical connector is located on an outer side wall of the earbud.

Wireless headset and headset box

A Bluetooth earphone includes an earbud portion and an earphone handle portion. A receiver module is disposed in the earbud portion. The earphone handle portion includes a connecting section connected to the earbud portion, and a top section and a bottom section located on both sides of the connecting section, a battery is disposed in the bottom section of the earphone handle portion. The Bluetooth earphone includes an antenna and a flexible circuit board. The antenna extends from the connecting section of the earphone handle portion to the top section of the earphone handle portion. The flexible circuit board includes a feeding part and a first extension part connected to the feeding part. The feeding part is located in the connecting section of the earphone handle portion, and is coupled to the antenna. The first extension part extends to the earbud portion.

Growing community of inventors

Shanghai, China

Lin Lu