Boe Technology Group Co., Ltd.

Beijing Boe Display Technology Co., Ltd.

Beijing Xiaomi Mobile Software Co., Ltd.

Beihang University

University of Science and Technology Beijing

Beijing Dipper Publishing Co., Ltd

Beijing Boe Display Technology Technology Co., Ltd

China Academy of Railway Sciences Corporation Limited

Beijing Huatie Information Technology Co., Ltd.

Beijing Ruichi Guotie Its Eng. & Tech. Ltd.

Signal & Communication Research Institute of China Academy of Railway Sciences Corporation Limited

Beijing Interstellar Glory Technology LLC

Beijing Interstellar Glory Space Technology Co., Ltd.

Zhihao Zhang

Xu Zhang

Zhihua Sun

Guohuo Su

Lei Shi

Wei Lin

Song Liu

Weichao Ma

Jianming Wang

Baoyu Liu

Chenman Zhou

Fanhua Feng

Guangquan He

Panlong He

Yingmeng Miao

Seungmin Lee

Yujie Gao

Shulin Yao

Wenkai Mu

Honglin Zhang

Wei Cai

Ju Wang

Cheng Wang

Yao Wang

You Zhou

Xi Zhang

Kaifeng Wang

Wenqiang Wang

Ningfang Song

Xiaoyang Wang

Cheng Zhou

Jianxin Xie

Xiaobin Xu

Xiaobo Peng

Xu Li

Fuyu Gao

Cang Zhang

Xiaonan Bai

Dongpo Xuan

Wenhao Fan

Biji Zhu

Tianliang Jiang

Yujin Zhang

Xueni Cheng

Xiaoyu Yan

Qiangliang Guo

Chunduo Li

Wengang Fu

Hongmin Jiang

Zhiyong Jiang

Zuyuan Wang

Jufeng Yang

Shangyong Gao

Maoshun Tang

Xindan Zhang

Qianru Wang

Yiqun Liang

Xiaozhi Zhou

Ce Han

Hanyu Ye

Xinyu Yu

A memory management method and system for an Android system, and a storage medium. The Android system includes a framework layer, a native layer and a kernel layer; the memory management system includes a service component on the framework layer, a memory manager on the native layer and an interface reclaimer on the kernel layer; the service component communicates with the memory manager and the interface reclaimer, respectively; the memory manager is configured to determine a memory event based on pressure stall information (PSI) obtained from a hook on a memory reclaim path, and report the memory event to the service component; and the service component is configured to call the interface reclaimer in response to the memory event being an event of reclaiming memory based on a process, and shut down a corresponding process interface by the interface reclaimer.

Memory management method and system for android system, and storage medium

The present disclosure provides a photographing method and apparatus, an electronic device, and a computer readable storage medium, relating to the technical field of image processing. Said method is applied to a first terminal. Said method comprises: in a cooperative photographing process, transmitting, to a second terminal, a preview image acquired by the first terminal; receiving cooperative photographing information inputted by the second terminal on the basis of the preview image, the cooperative photographing information being used for performing photographing control on the first terminal; executing a cooperative photographing operation corresponding to the cooperative photographing information; and outputting a target image obtained by the first terminal after executing the cooperative photographing operation. The implementation of the present disclosure is beneficial for improving the image photographing quality, and reducing operation cost when a user performs photographing by himself/herself.

Photographing method and apparatus, electronic device, and computer readable storage medium

A thin metal strip continuous casting method using momentum flow distribution, comprising the steps of: adjusting the position of a flow distribution device (), and starting a double-roller thin strip continuous casting apparatus; molten metal () forming a uniform sheet-shaped molten metal flow () having an initial momentum after the molten metal () passes through the flow distribution device; the sheet-shaped molten metal flow entering a molten pool () at a superheat degree of 50-100° C. and an initial velocity of 0.5-2 m/s, wherein the flow distribution device is spaced apart from the molten pool; under the action of the initial velocity of the molten metal and in the molten pool, forming a whirlpool, which is adjacent to surfaces of two cooling rollers and has a momentum stirring action; and completing the solidification of the molten metal under the momentum stirring action of the whirlpool along with the rotation of the two cooling rollers. In the method, a whirlpool, which is adjacent to surfaces of cooling rollers and has a momentum stirring action, is formed in a molten pool by means of the kinetic energy of molten metal, such that equiaxed crystals can be prepared when a superheat degree is as high as 50-100° C., and the proportion of equiaxed crystals can be increased to 100%, thereby refining crystal grains and alleviating segregation.

Thin metal strip continuous casting method using momentum flow distribution

Collaborative shooting utilizing preview images and multiple terminals

The nondestructive determination of core size of a hollow-core photonic bandgap fiber (HC-PBF) using Fabry-Perot (FP) interference is performed with an apparatus including a tunable laser source (TLS), a 1&#xd7;2 single-mode (SM) coupler, an SM collimator, a six-axis translation stage, an optical detector, and an oscilloscope. The light from the TLS passes through the 1&#xd7;2 SM coupler and the SM collimator to perpendicularly enter two parallel air-SiOinterfaces of the core of the fiber and is reflected, while the TLS is tuned from one wavelength to another. Then the reflected spectrum is guided to the optical detector, where its interference intensity is converted into voltage intensity to be displayed at the oscillator and fitted with a least-squares method to obtain the distance between the two air-SiOinterfaces. The core size of the fiber can be obtained by rotating the fiber and repeating the procedure at multiple angular positions.

Method and apparatus for nondestructive determination of core size of hollow-core photonic bandgap fiber using Fabry-Perot interference

Magnetic levitation globe

A driving method of display panel, a display panel and a display device are disclosed. The driving method includes: in a single-frame display time, sequentially applying signals to a plurality of first sub-pixels connected to first data lines in a scanning direction so that: a signal polarity applied to each of a plurality of first white sub-pixels connected to first data lines is opposite to a signal polarity applied to a first sub-pixel which is located at an upstream of the first white sub-pixel along the scanning direction and is adjacent to the first white sub-pixel, and a signal polarity applied to each of a plurality of first colored sub-pixels is identical with a signal polarity applied to a first sub-pixel which is located at an upstream of the first colored sub-pixel along the scanning direction and is adjacent to the first colored sub-pixel.

Driving method of display panel, display panel and display device

The present disclosure provides a method and a device for driving a GOA circuit, a time controller and a display device. The method includes steps of: determining a bright-dark period for striped patterns on a display panel; and compensating for data signals at rows where the striped patterns are located periodically in accordance with the bright-dark period.

Method and device for driving GOA circuit, time controller, and display device

The present disclosure provides a level shifting unit which includes, for example, a logic control module, an output module, an output control module and a feedback module. The logic control module is connected to a turn-on power supply, a driving power supply, an input signal terminal, and the output module. The feedback module is connected to an enable signal terminal, a signal output terminal, and the output control module. The output control module is connected to the output module and the driving power supply. The output module is connected to the signal output terminal. The feedback module controls to turn on or turn off the output module through the signals outputted from the enable signal terminal and the signal output terminal. If the signals outputted by two level shifting units are short circuited, the feedback module controls the output control module of the level shifting circuit to be disconnected.

Level shifting unit, level shifting circuit, method for driving the level shifting circuit, gate driving circuit and display device

Embodiments of the present disclosure provide a clock signal transmission circuit, a driving method thereof, a gate driving circuit, and a display device. The clock signal transmission circuit includes an input circuit, a pull-up circuit, a reset circuit, a pull-down control circuit, a pull-down circuit, and a pull-up holding circuit. According to an embodiment of the present disclosure, the clock signal source can be disconnected from each shift register unit in the gate driving circuit before a screen is displayed, preventing malfunctions of the gate driving circuit caused by an undesired high voltage on the clock signal line.

Clock signal transmission circuit and driving method thereof, gate driving circuit, and display device

The present invention provides a pixel circuit and a driving method thereof, as well as a display device. The pixel circuit comprises a drive transistor and a first energy storage element, a source of the drive transistor being connected with a first end of the first energy storage element. The pixel circuit further comprises a driving module, and has a reset voltage input terminal, a data voltage input terminal, a working voltage input terminal and a plurality of control signal input terminals. The pixel circuit provided by the present invention can prevent the driving current flowing through the electroluminescent unit from being influenced by the turn-on threshold value of the corresponding drive transistor, thereby solving the problem of non-uniform display brightness caused by drift of the turn-on threshold value of the drive transistor thoroughly.

Pixel circuit and driving method thereof, display device

The embodiments of the disclosure provide a mobile terminal, which includes a power generation unit, a power storage unit and a control system. The power generation unit includes a toroidal inductance coil which can move back and forth inside and outside a region of magnetic field generated by a permanent magnet and incise magnetic force lines of the permanent magnet, such that a current is generated in the toroidal inductance coil. The power storage unit is connected with the toroidal inductance coil of the power generation unit and a power supply circuit of the mobile terminal, respectively, and the power storage unit is used for storing power generated by the power generation unit. The control system is connected with the power storage unit. When electricity of a battery of the mobile terminal is less than a predetermined amount and the battery is not in a charged state, the control system causes the power storage unit to supply power to the mobile terminal.

Mobile terminal

Growing community of inventors

Beijing, China

Zhihao Zhang