公开(公告)号：US12273652B2

公开(公告)日：2025-04-08

申请号：US18356854

申请日：2023-07-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiguang Zhou ,  Hua Long ,  Zhenxing Zhang ,  Jiandong Ke ,  Zhaohua Qian

IPC: H04N7/10 ,  H04N7/14

Abstract: A transmission method, apparatus, and system implement bidirectional transmission of an audio/video signal between peer devices. The transmission system may include a first transmission apparatus and a second transmission apparatus, where the first transmission apparatus is connected to the second transmission apparatus through a first cable, and the first cable includes a first number of main downlink lanes and a second number of main uplink lanes. Bidirectional transmission of the audio/video signal between the first transmission apparatus and the second transmission apparatus is performed through the first cable.

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：US20230362330A1

公开(公告)日：2023-11-09

申请号：US18356854

申请日：2023-07-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiguang Zhou ,  Hua Long ,  Zhenxing Zhang ,  Jiandong Ke ,  Zhaohua Qian

IPC: H04N7/10 ,  H04N7/14

CPC classification number: H04N7/10 ,  H04N7/14

Abstract: This application provides a transmission method, apparatus, and system, to implement bidirectional transmission of an audio/video signal between peer devices. The transmission system may include a first transmission apparatus and a second transmission apparatus, where the first transmission apparatus is connected to the second transmission apparatus through a first cable, and the first cable includes a first number of main downlink lanes and a second number of main uplink lanes. Bidirectional transmission of the audio/video signal between the first transmission apparatus and the second transmission apparatus is performed through the first cable.

公开(公告)号：US20240104048A1

公开(公告)日：2024-03-28

申请号：US18526047

申请日：2023-12-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingzhao Zhang ,  Yanqin Chen ,  Zhaohua Qian ,  Hangzhou Chen ,  Jiandong Ke ,  Guizhen Wang ,  Lijuan Tan

IPC: G06F13/42

CPC classification number: G06F13/4282 ,  G06F2213/0012

Abstract: A transmitting apparatus includes a signal generation circuit and an adjustment circuit. The signal generation circuit is configured to send, to a receiving apparatus, a serial data signal that carries a training sequence and valid data, where the training sequence is used to train a skew or an equalization of the serial data signal, and the valid data is used to detect an amplitude of the serial data signal. The adjustment circuit is configured to receive indication information from the receiving apparatus, and adjust a transmission parameter of the serial data signal based on the indication information, where the transmission parameter includes at least one of the skew, the equalization, or the amplitude.

公开(公告)号：US20240012784A1

公开(公告)日：2024-01-11

申请号：US18471921

申请日：2023-09-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deng Lu ,  Zhaohua Qian ,  Weixing Zhang ,  Jiandong Ke

IPC: G06F13/42 ,  G06F13/40

CPC classification number: G06F13/4282 ,  G06F13/40 ,  G06F2213/0042

Abstract: This application provides a data transmission apparatus and a data transmission method. The data transmission apparatus in this application includes: a first connection unit and a control unit, where the first connection unit is a connector plug or a connector socket; and the control unit is configured to: if determining that the first connection unit is in a forward insertion state, control a first data pin pair of the first connection unit to be in a first communication mode, and control a second data pin pair of the first connection unit to be in a second communication mode.

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.