Huawei Technologies Co., Limited

University of Science and Technology Beijing

North China Institute of Science and Technology

Beijing Anke Technology Co., Ltd.

Xiufeng Zhang

Chao Wang

Yiyang Zhang

Lei Wu

Tao Zhou

Gang Yao

Jinqin Ai

Jinsong Wen

Jinhai Liu

Sitao Zhu

Haixiao Liu

Yitong Huang

Quande Wei

Xuyou Wang

Shidong Li

Huadong Xie

Longkai Hao

Xiaoguang Shang

Jiajie Li

A method for monitoring hydraulic fracturing range of a surface vertical shaft is provided by the present disclosure, belonging to the technical field of ultrahigh-pressure hydraulic fracturing monitoring of the coal mine vertical shafts. The method comprises the following steps: connecting, by an eight-thread communication cable, a high-precision portable micro-seismic monitoring acquisition instrument to a high-sensitivity deep hole sensor, and performing uphole-crosshole-downhole monitoring simultaneously, specifically as follows: providing uphole-crosshole-downhole monitoring holes respectively, and installing deep hole geophones in the monitoring holes; then laying communication cables uphole-crosshole-downhole to connect the geophones to the portable high-precision micro-seismic acquisition instrument respectively; then performing high-precision positioning on the fissure development range by monitoring recorded events and time, thus determining the directions and ranges of a main fracture and secondary induced fractures of hydraulic fractures.

Method for monitoring hydraulic fracturing range of surface vertical shaft

An electronic device for image color adjustment includes a display and a processor. The processor includes a display processing unit (DPU). The DPU obtains a to-be-displayed image, obtains, based on a first color mode, a target three-dimensional (3D) lookup table used to adjust the to-be-displayed image, maps a color of the to-be-displayed image based on the target 3D lookup table, to obtain an adjusted image, and sends the adjusted image to the display for displaying.

Image color adjustment method for electronic device and apparatus

This application discloses a display brightness adjustment method, including: an electronic apparatus obtains a to-be-displayed image and calculates an average pixel level APL of the to-be-displayed image. The electronic apparatus determines, based on the third light adjustment curve, an actual display brightness value corresponding to the average pixel level of the to-be-displayed image. The electronic apparatus adjusts display brightness of the to-be-displayed image based on the actual display brightness value. In this way, impact exerted on contrast when brightness is turned down at a low APL can be ensured, and a high contrast effect of image brightness of an HDR display can be ensured.

Display brightness adjustment method and related apparatus

A display method for an electronic device including a first display area and a second display area. In the method, the electronic device determines a first application mode, adjusts, based on the first application mode, intensity values of color channels, stored in a hardware composer (HWC), determines, using the HWC, each first layer corresponding to the first display area, and overlays, using the HWC, the first layer and a background color layer corresponding to adjusted intensity values of the color channels. In an overlay process, the background color layer is located below the first layer, and the background color layer corresponds to the second display area. Then, the display is used to display an overlaid image.

Display method for electronic device and electronic device

A display screen aging compensation method, system, and device, the method including obtaining display data of each display area of a display screen having at least one display area, the display data including usage time t of the display area, a maximum gray level value Lev_max that is of each primary color and that is obtained before the display data, and an average gray level value Lev of each primary color of three primary colors within the usage time t, where the usage time is accumulated screen-on time that is of the display area and that is obtained after the display screen is powered on, obtaining a decay ratio of each primary color of the display area based on the display data, and performing aging compensation on each display area based on the decay ratio of each primary color of each display area.

Display screen aging compensation method, circuit system, and electronic device

A display brightness adjustment method includes: an electronic apparatus obtains a to-be-displayed image and determines an average pixel brightness value of each backlight partition on a liquid crystal display (LCD) panel based on the to-be-displayed image, where a backlight region of the LCD panel is divided into a plurality of backlight partitions; the electronic apparatus determines an initial dimming duty cycle corresponding to each backlight partition based on the average pixel brightness value of each backlight partition; the electronic apparatus determines a drive current value based on the initial dimming duty cycle corresponding to each backlight partition and drive current threshold data; the electronic apparatus adjusts, based on the drive current value, light emitting brightness of the backlight region that exists when the to-be-displayed image is displayed.

A screen brightness adjustment method includes determining target brightness, determining a quantity of pixel rows controlled by each pulse in an emission (EM) signal required for implementing the target brightness, adjusting a pulse width of a pulse in a current EM signal based on the quantity of pixel rows controlled by each pulse in the EM signal required for implementing the target brightness to change a duty cycle of the EM signal, where the duty cycle reflects a quantity of pixel rows that are lit up and controlled by the EM signal.

Screen brightness adjustment method and terminal

Growing community of inventors

Beijing, China

Xiufeng Zhang