公开(公告)号：US20230353109A1

公开(公告)日：2023-11-02

申请号：US18345921

申请日：2023-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingjing Wang ,  Zhaohua Qian ,  Bingzhao Zhang ,  Chunbiao Wu ,  Jie Peng ,  Jiandong Ke

IPC: H03F3/45 ,  H03G1/00 ,  H03F1/32

CPC classification number: H03F3/45475 ,  H03F3/45224 ,  H03G1/0029 ,  H03F1/3211

Abstract: An operational amplifier, a drive circuit, an interface chip (1201, 1301, 1401, 1501), and an electronic device (1600) relate to the field of power electronics technologies. The operational amplifier includes a first load (R1), a second load (R2), a first switching transistor group (301-1), a second switching transistor group (301-2), and a tail current source (203). The first switching transistor group (301-1) has a first end connected to a first output end (outp) of the operational amplifier and connected to a power supply (VDD) of the operational amplifier by using the first load (R1), and has a second end grounded by using the tail current source (203). The second switching transistor group (301-2) has a first end connected to a second output end (outn) of the operational amplifier.

公开(公告)号：US20230344683A1

公开(公告)日：2023-10-26

申请号：US18333760

申请日：2023-06-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dongdong Shen ,  Zhaohua Qian ,  Jingjing Wang ,  Guang Qian ,  Xiaowei Li

IPC: H04L25/03

CPC classification number: H04L25/03012

Abstract: A communication system includes a first device, a second device, and a cable that connects the first device and the second device, and the cable stores cable information of the cable. A link training method includes: obtaining device information of the first device, obtaining the cable information from the cable, and obtaining device information of the second device; and performing link training between the first device and the second device based on the device information of the first device, the cable information, and the device information of the second device.

公开(公告)号：US20240007106A1

公开(公告)日：2024-01-04

申请号：US18468475

申请日：2023-09-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhaohua Qian ,  Jingjing Wang ,  Yanqin Chen ,  Jiandong Ke

IPC: H03K17/687

CPC classification number: H03K17/6872

Abstract: An interface circuit, a method for controlling the interface circuit, a chip, and a terminal device are provided. The interface circuit includes a first PMOS transistor, an input signal control circuit, a bias circuit, a signal input end, and an input/output end. The bias circuit includes a substrate bias voltage generation end and a bias voltage generation end. The bias circuit is coupled to a high-level power supply end, the input/output end, and a ground end. The input signal control circuit is connected to the signal input end, the bias voltage generation end, and a gate of the first PMOS transistor; a first electrode of the first PMOS transistor is connected to the high-level power supply end, and a second electrode of the first PMOS transistor is connected to the input/output end.

公开(公告)号：US12206528B2

公开(公告)日：2025-01-21

申请号：US18333760

申请日：2023-06-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dongdong Shen ,  Zhaohua Qian ,  Jingjing Wang ,  Guang Qian ,  Xiaowei Li

IPC: H04B10/40 ,  H04L25/03

Abstract: A communication system includes a first device, a second device, and a cable that connects the first device and the second device, and the cable stores cable information of the cable. A link training method includes: obtaining device information of the first device, obtaining the cable information from the cable, and obtaining device information of the second device; and performing link training between the first device and the second device based on the device information of the first device, the cable information, and the device information of the second device.

公开(公告)号：US20230379076A1

公开(公告)日：2023-11-23

申请号：US18361409

申请日：2023-07-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaowei Li ,  Zhenxing Zhang ,  Junhao Jin ,  Guang Qian ,  Jingjing Wang

IPC: H04L1/00

CPC classification number: H04L1/0002

Abstract: A data transmission method and apparatus are provided. The method includes: obtaining service data; and sending first data, where the first data is obtained based on the service data, where a data structure of the first data is the same as a data structure of second data, the second data is for performing link training, and the link training is performed before the first data is sent.