Abstract: The present disclosure relates to a head-mounted display device, including: a head-mounted display portion, and a control portion in signal connection with the head-mounted display portion; the control portion includes a main battery, an auxiliary battery, and a switching circuit module connected to the main and auxiliary batteries. The switching circuit module is used for power supply switching between the main battery and the auxiliary battery, and includes a first trigger connector and a second trigger connector having a first state and a second state; in the first state, the first trigger connector and the second trigger connector are in an off-state, the main battery supplies power; in the second state, the first trigger connector and the second trigger connector are in an on-state to trigger a switching signal to switch to the auxiliary battery for power supply. The present disclosure further relates to a communication command system.

Abstract: Provided is a method for retrieving a lost-of-contact mobile terminal. The method is applied to a first control terminal, and includes: receiving a first lost-of-contact distress signal a first mobile terminal forwarded by a server; displaying a help seeking interface; sending, in response to a help-retrieving instruction, a first help-retrieving request to the server; and receiving a first confirmation help message from a second control terminal from the server, wherein the first confirmation help message indicates that the second control terminal agrees to help retrieve the first mobile terminal.

Abstract: An object distance adjusting apparatus includes: an object distance adjusting portion, for fixing an optical device and adjusting a position of the optical device relative to an object image display portion; a limiting portion, for fixing the object image display portion and limiting a limit position of the object distance adjusting portion relative to the object image display portion; and a connecting and fixing portion, which is on a side of the limiting portion away from the object distance adjusting portion and is connected to the object distance adjusting portion, for fixing the limiting portion, the optical device and the object image display portion. Virtual display glasses include an optical device, an object image display portion, and the object distance adjusting apparatus, which can fix the optical device and the object image display portion, and adjust the position of the optical device relative to the object image display portion.

Abstract: A head-mounted display device, comprising a holder, a lens barrel assembly provided on the holder, and an adjusting device. The lens barrel assembly comprises a lens barrel, a display module provided in the lens barrel, and an optical lens group provided at one end of the lens barrel, wherein the optical lens group comprises at least one optical lens. The adjusting device comprises a driving device provided on the holder, a support provided in the lens barrel and fixedly connected to the display module, and a transmission device. The transmission device is configured to be capable of driving the support to do a reciprocating linear motion under a driving of the driving device, so that the display module is close to or away from the optical lens group.

Abstract: A method of image display is provided. The method of image display includes tracking, by a terminal device, an eye movement of a user and obtaining eye tracking data; transmitting the eye tracking data from the terminal device to a content server; determining, by the content server, a dynamic high-resolution region of an original image based on the eye tracking data; rendering, by the content server, a first image having a first resolution; rendering, by the content server, a second image having a second resolution based on the dynamic high-resolution region; encoding, by the content server, the second image having the second resolution, the first image having the first resolution, and parameter data in data streams; and transmitting the data streams from the content server to the terminal device for image display. The second resolution is greater than the first resolution.

Abstract: Provided is a method and device for tracking eyeballs, a display device, a device, and a medium. The device for tracking eyeballs includes a distance detecting unit, a light emitting unit, a light detecting unit, and a processing unit; wherein the distance detecting unit is configured to detect a first distance between an eyeball to a target object; the light emitting unit is configured to irradiate a target eyebox region of the target object with infrared light; the light detecting unit includes a plurality of sub-units arranged in an array, wherein each of the plurality of sub-units includes a plurality of receivers; and the processing unit is configured to control a first receiver in each of the plurality of sub-units to receive the infrared light reflected by the eyeball and determine a position of the eyeball based on an intensity of the infrared light received by the first receiver.

Abstract: A mobile device includes a primary battery and a secondary battery, and the mobile device further includes: a power supply control module and a main control module connected to each other, where the power supply control module is respectively connected to the primary battery and the secondary battery; and the main control module is configured to control the primary battery to supply power to the mobile device when it is determined that the primary battery and the mobile device are in the power-on state; and control a power supply of the mobile device to be switched from the primary battery to the secondary battery when it is determined that the primary battery and the mobile device are in the power-off state.

Abstract: A display device is provided. The display device includes a display panel, a micro-lens assembly, and a lens assembly; wherein the micro-lens assembly comprises at least three micro-lens arrays; wherein orthographic projections of the at least three micro-lens arrays on a display region of the display panel are arranged sequentially in a direction away from a center of the display region, and the micro-lens array is configured to decrease a light exit angle of a light beam traveling through the micro-lens array, to make the light exit angle of the light beam traveling through the micro-lens array less than or equal to the maximum value of the corresponding light exit angle.

Abstract: Provided in the present invention are an interaction method and apparatus for a light field display, and a light field display system. The method includes: establishing a virtual object on a three-dimensional interaction interface, which is displayed by a target light field display, so as to map an interaction gesture of a user for the three-dimensional interaction interface; identifying the interaction gesture of the user for the three-dimensional interaction interface, and mapping the interaction gesture to the virtual object, so as to perform, on a target object in the three-dimensional interaction interface, an interaction operation corresponding to the interaction gesture; and adjusting the display content of the three-dimensional interaction interface on the basis of the interaction operation.

Abstract: A gesture recognizing method, an interactive method, a gesture interactive system, an electronic device, and a non-transitory computer-readable storage medium are disclosed. The gesture recognizing method includes: acquiring a plurality of groups of images taken respectively at different photographing moments for a gesture action object, wherein each group of images includes at least one pair of corresponding depth map and grayscale map; and according to the plurality of groups of images, obtaining spatial information by using the depth map in each group of images, and obtaining posture information for the gesture action object by using the grayscale map in each group of the images, to recognize a dynamic gesture change of the gesture action object. The gesture recognizing method reduces the processing time as a whole, can quickly obtain gesture recognition results, reduce the system resource occupation, and ensure the real-time gesture interaction.

Abstract: A gesture recognizing method, an interactive method, a gesture interactive system, an electronic device, and a non-transitory computer-readable storage medium are disclosed. The gesture recognizing method includes: acquiring a plurality of groups of images taken respectively at different photographing moments for a gesture action object, wherein each group of images includes at least one pair of corresponding depth map and grayscale map; and according to the plurality of groups of images, obtaining spatial information by using the depth map in each group of images, and obtaining posture information for the gesture action object by using the grayscale map in each group of the images, to recognize a dynamic gesture change of the gesture action object. The gesture recognizing method reduces the processing time as a whole, can quickly obtain gesture recognition results, reduce the system resource occupation, and ensure the real-time gesture interaction.

Abstract: The present application proposes a display method, including determining a current display mode of a display at a display end, wherein the current display mode is one of at least two display modes, and each mode indicates definition information related to resolution of an image to be displayed, obtaining multiple current frame color images of a scene through multiple image acquisition devices at the acquisition end, determining current frame depth maps at the locations of at least three image acquisition devices, so as to obtain current frame depth information for the scene, generating left-eye and right-eye viewpoint maps corresponding to human eye positioning coordinate data based on the current frame depth information, the current frame color images obtained through the at least three image acquisition devices and the human eye positioning coordinate data, and synthesizing the generated left-eye viewpoint map and the right-eye viewpoint map into a three-dimensional image.

Abstract: An apparatus can include: a processor; a voltage regulator configured to provide a processor voltage and a processor current to the processor; and a voltage regulator controller that can include a current sensor comprising an analog-to-digital converter (ADC) having an ADC input range and configured to provide current data based on an ADC input voltage, and a configuration manager configured to receive processor power data and adjust the ADC input range based on the processor power data. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A computer-implemented method for data communication bus address sharing can include selecting, by at least one processor, one of two or more peripheral devices sharing an address of a data communication bus. The method can additionally include modulating, by the at least one processor, a duty cycle of a clock signal transmitted over the data communication bus to the two or more peripheral devices, wherein the modulating causes a low period of the clock signal to satisfy a threshold condition for indicating selection of the selected one of the two or more peripheral devices. The method can also include performing, by the at least one processor using the address, data communication over the data communication bus with the selected one of the two or more peripheral devices. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: An efficient structure and methodology for container-based applications are provided for disaster recovery for data in a storage system using application consistency groups for replication from the storage system to a disaster recovery system. Application consistency groups can be generated containing applications, a disaster recovery plan, and a disaster recovery policy, where each application has a consistency level. The applications in an application consistency group can include stateless applications and stateful applications. The replication of an application consistency group from the system to a disaster recovery storage system can be controlled according to the disaster recovery policy, the disaster recovery plan, and the consistency levels of the application consistency group.

Abstract: A near-eye display device, including: a display device (1) for displaying an image; an imaging lens (2) on a light-outgoing side of the display device (1) and for imaging the image displayed on the display device (1); a polarizer (3) on the light-outgoing side and for converting light emitted from the display device (1) into linearly polarized light; first and second phase delay layers (41, 42), on a side of the polarizer (3) distal to the display device (1) and for converting a polarization state of incident light; a polarized light splitter (5) on a side of the second phase delay layer (42) distal to the polarizer (3); and a curved mirror (6) on a reflected light path of the polarized light splitter (5) and for partially reflecting light transmitted by the second phase delay layer (42) to human eyes and partially transmitting ambient light.

Abstract: The present application discloses an inter-device communication method, a camera, and a display, for use in providing a method for direct communication between a camera and a display. The camera comprises a controller, a camera body, a memory, and a communication module. The controller is configured to perform the following steps: acquiring an image from the camera body and performing image processing on the image to determine configuration information of the image; determining ID code information of the image according to identification information of the camera body and the configuration information, wherein the ID code information is used for representing the identification information of the camera body and the configuration information of the image; and sending the image and the ID code information to a display, so that the display performs image processing on the image according to the ID code information and then displays the image.

Abstract: A micro-magnetic invisible orthodontic appliance is provided. The micro-magnetic invisible orthodontic appliance includes a bottom brace (1), an outer periodontal brace (2) and an inner periodontal brace (3). The bottom brace (1), the outer periodontal brace (2) and the inner periodontal brace (3) together form a U-shaped brace. A tooth receiving groove is defined between the outer periodontal brace (2) and the inner periodontal brace (3). The bottom brace (1), the outer periodontal brace (2) and the inner periodontal brace (3) are made from one of a polymer composite material, biological ceramic, and an interpenetrating polymer network material, dispersed with permanent magnetic neodymium-iron-boron powder, by one-piece molding or three-dimensional printing.

Abstract: A virtual reality interaction method includes: collecting body posture information of a user in a real environment by using a posture tracking device, where the posture tracking device includes a motion detection unit provided corresponding to a position of a target skeletal muscle, and the motion detection unit is configured to determine a joint motion angle of a corresponding joint; collecting first position information of the user's head in the real environment by using a laser radar component, and collecting head posture information of the user's head in the real environment by using an inertial measurement unit component; and configuring the body posture information, the head position information, and the head posture information as full-body posture information of the user, and mapping a virtual object corresponding to the user in a virtual reality environment according to full-body posture information.

Abstract: A virtual reality display method and device, and a storage medium are provided. The virtual reality display method includes: rendering display data of a plurality of screens in sequence by utilizing at least one thread of at least two threads, and after rendering the display data of the plurality of screens, correcting the rendered display data by using the at least two threads.