Beijing Zitiao Network Technology Co., Ltd.

Jiu Xia

Guanghui Liu

Kaiyang Wang

Lintao Xu

A backlight control system, a control method, and a related device are provided. The backlight control system includes: a power conversion unit, configured to convert an input electrical signal into an output voltage to drive a light source; an acquisition unit, configured to acquire a cathode voltage of the light source at a timing of a completion of light source illumination; and a processing unit, connected to the acquisition unit and configured to determine feedback information used to adjust the output voltage based on a preset voltage and the cathode voltage. The cathode voltage of the light source is acquired by the acquisition unit. The processing unit determines the feedback information used to adjust the output voltage based on the preset voltage and the cathode voltage. The feedback information is beneficial for balancing backlight stability and power consumption, thereby enhancing system stability while reducing power consumption of the system.

Light-emitting diode (LED) backlight control system enhancing stability and reducing power consumption

The present disclosure provides a virtual reality device, a lens barrel positional state detection method and apparatus therefor, and a medium. The device comprises: a lens barrel module, a magnet, a magnetic sensor, and a main controller, wherein one of the magnet and the magnetic sensor is embedded on a lens barrel housing of the lens barrel module, and the other one is fixed at a corresponding preset position of the lens barrel module; wherein the main controller controls the lens barrel module to move and detects an output electrical signal of the magnetic sensor when the lens barrel module moves so as to determine a positional state of the lens barrel module.

Virtual reality device, lens barrel positional state detection method and apparatus therefor, and medium

An apparatus, method for lens barrel distance adjustment, device and computer medium are provided. The method includes: obtaining an eye image of a user; determining a pupillary distance of the user based on the eye image; obtaining a first output voltage determined by a hall sensor; in response to that the first output voltage indicates that an absolute value of a difference value between a distance between left and right lens barrels of a head-mounted device and the pupillary distance of the user is greater than a predetermined threshold, sending a control instruction corresponding to the difference value to an adjustment circuit, causing the adjustment circuit to adjust a distance between the left and right lens barrels based on the control instruction. The hall sensor and the adjustment circuit are provided on the head-mounted device.

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Beijing, China

Jiu Xia