Shanghai Avic Opto Electronics Co., Ltd.

Tianma Micro-electronics Co., Ltd.

Sunline Printing (shanghai) Electronics Co., Ltd.

Photonic Technologies (shenzhen) Co., Ltd.

Xu Yang

Xupeng Wang

Zhengyuan Huang

Xiaoyuan Ding

Nan Wang

Xiaohong Chen

Nana Tian

Zhiyong Ren

Yachen Wang

Qimeng Lu

Tao Lin

Jin Wang

Xuefeng Chen

Zhi Zheng

Pei Jiang

Fei Ma

Song Ye

Xudong Zhang

Changhe Wu

Changchao Liu

Qingwen Guo

Huixin Hu

Wenjing Li

Yunfang Huo

Jianghua Qian

Ziang Xu

Kexin Xu

A high-side driver method for a laser of a Lidar, including: transforming a first input signal into a second input signal between a first voltage value and a second voltage value, by a level translation module; stepping down a first voltage signal according to a first voltage difference to obtain a second voltage signal, by a low-dropout linear regulator; generating a first control signal, by the first pre-driver module; generating a pulse current for driving the laser, by the first power switching transistor.

High-side driver method and device for a laser of a lidar

The present invention provides an offline handwriting individual recognition system and method. The method comprises: scanning the suspicious handwriting to obtain a first white light image and a first three-dimensional image, and scanning the sample handwriting to obtain a second white light image and a second three-dimensional image; pre-processing the first white light image and the second white light image to obtain a first pre-processed image and a second pre-processed image; extracting a first skeleton image and a second skeleton image from the first pre-processed image and the second pre-processed image; obtaining a first writing trajectory and a second writing trajectory according to the first skeleton image and the second skeleton image; extracting a first dynamic feature, a first three-dimensional feature, and a second dynamic feature, a second three-dimensional feature; processing to obtain a correlation coefficient, and obtaining an individual recognition result.

Offline handwriting individual recognition system and method based on three-dimensional dynamic features

The invention provides an offline handwriting individual recognition system and method based on two-dimensional dynamic features. The method comprises: obtaining a first handwriting image corresponding to suspicious handwriting and second handwriting images corresponding to a plurality of sample handwriting; pre-processing the first handwriting image and the second handwriting images to obtain a first pre-processed image and second pre-processed images; extracting a first skeleton image and second skeleton images from the first pre-processed image and the second pre-processed images; obtaining a first writing trajectory and second writing trajectories according to the first skeleton image and the second skeleton images; extracting first dynamic features and second dynamic features according to the first writing trajectory and the second writing trajectories; performing processing to obtain a correlation coefficient between the suspicious handwriting and the sample handwriting, and performing processing to obtain an individual recognition result according to the correlation coefficient.

Offline handwriting individual recognition system and method based on two-dimensional dynamic features

The invention relates to a high-performance shielding sheet, preparation method thereof and coil module comprising the same. The high-performance shielding sheet includes at least one sheet which include: at least one shielding layer with low coercive force and low remanence formed of a soft magnetic material; and at least one adhesive layer disposed on at least one side of the shielding layer; and wherein the shielding layer includes a plurality of graphical slits, and the plurality of graphical slits divide the shielding layer into a plurality of graphical fragments; and wherein the plurality of graphical slits are filled with the adhesive layer, enabling the plurality of graphical fragments to be separated from each other and have a good insulation property. The advantages include: improving the electric charging conversion rate, increasing the charging efficiency, reducing the transmission loss, and increasing the uniformity of the electromagnetic wave transmission medium.

High-performance shielding sheet and preparation method thereof and coil module comprising the same

A method and a system for reducing current noise of a touch terminal are provided. The method includes: determining that a user receives a voice call via an earpiece of the touch terminal, and controlling the touch terminal to switch from a first touch scan frequency to a second touch scan frequency, where the second touch scan frequency is less than the first touch scan frequency. As can be seen, if the user receives the voice call via the earpiece of the touch terminal, the touch terminal is controlled to switch from the first touch scan frequency to the second touch scan frequency, to effectively reduce the current noise heard by the user by decreasing the touch scan frequency of the touch terminal, so that the periodic current noise is outside a frequency band perceptible to a human ear, thereby improving user experience when receiving the voice call.

Method and system for reducing current noise of touch terminal

A method for testing a display panel includes: applying a first level signal to a first sub-pixel and a third sub-pixel of a first pixel unit and applying a second level signal to a second sub-pixel of the first pixel unit; applying the second level signal to a first sub-pixel and a third sub-pixel of a second pixel unit and applying the first level signal to a second sub-pixel of the second pixel unit; and detecting a short circuit between adjacent sub-pixels. The first level signal has a voltage polarity opposite to a voltage polarity of the second level signal. Therefore, it is ensured that any two adjacent sub-pixels have opposite voltage polarities when the short circuit between adjacent sub-pixels of the display panel is detected. The method also provides improved testing abilities to detect an open circuit in a sub-pixel.

Circuit for testing display panel, method for testing display panel, and display panel

A liquid crystal display device is disclosed. The display device includes gate drive ASG circuits, and a driver integrated circuit configured to connect wires from gate line output terminals of the ASG circuits with a client system. The ASG circuits output level signals to the client system, and the client system is configured to determine a duration time during which the level signals from the ASG circuits exceed a preset level signal threshold value, and in response to the duration time being less than the preset time threshold value, the driver integrated circuit receives an adjusted signal code required for operation of the ASG circuits, and the driver integrated circuit drives the ASG circuits according to the adjusted signal code required for operation of the ASG circuits.

Liquid crystal display device

Growing community of inventors

Shanghai, China

Xu Yang