5 results about "Extended Display Identification Data" patented technology

An electronic device includes a memory; a communication interface; and a processor. The processor is configured to, based on a source device connected through the communication interface being identified to support a first version of transmission standard, convert first Extended Display Identification Data (EDID) information, which is stored in the memory and corresponds to a second version of transmission standard, to second EDID information corresponding to the first version of transmission standard, and change a state of a hot plug detect signal related to the communication interface so that the source device reads EDID information.

Some embodiments of the present application provide a display device and a standby wake-up method. The method can send preset extended display identification data in a power management module to an external device and receive a wake-up message sent by the external device based on the extended display identification data in response to a data exchange message sent by the external device when the external device is powered on in a standby state of the display device. In response to the wake-up message, the power management module is powered on and the external device is notified to resend the data exchange message. In response to the data exchange message, the extended display identification data newly written in the memory is sent to the external device, so that the external device sends port information based on the new extended identification data. Then, the signal source channel is set according to the port information, and the display screen of the signal source channel is displayed. The method can improve the reliability of the standby wake-up function of the display device, automatically switch the signal source channel of the display device, and improve the user experience.

The application discloses a display device and a configuration method for expanding display identification data. The display device splits the expanded display identification data into a basic block and an expansion block which are decoupled from each other, and receives a combination configuration sent by a terminal device. The basic block is used to represent basic display attributes of a display, the expansion block is used to represent expansion display attributes of the display, the combination configuration is used to adapt to a compatible fault of an HDMI interface, and the combination configuration comprises a combination rule. The basic block and the expansion block indicated by the combination rule are spliced based on the combination configuration, so as to generate target expanded display identification data, and the target expanded display identification data is output to an external device through the HDMI interface. The application breaks the solidification limitation of EDID whole package, can remotely reconfigure EDID for the compatible fault of the HDMI interface, does not need to upgrade the whole machine or replace hardware, and further improves the configuration efficiency of EDID and improves the experience of users.

A method and apparatus for generating a video wall, a storage medium, and a display system are disclosed. The method includes: acquiring identifiers of multiple video walls connected to a video wall processor; designating each video wall as a target video wall, and sending a reset command to each target video wall, the reset command carrying the identifier of the target video wall; determining the output port where extended display identification data negotiation occurs, and establishing a correspondence between the output port and the target video wall; and generating a video wall composed of images output from the multiple output ports according to the correspondence, wherein the position of the image output from the output port on the video wall corresponds to the position of the corresponding video wall in the video wall matrix. This embodiment provides a solution that, by resetting the video walls and determining the correspondence between the video walls and the output ports, generates a video wall, enabling automatic video wall generation and improving efficiency and accuracy.

The application discloses a kind of multi-screen display synchronous display optimization methods.This method includes: obtaining the extended display identification data of each display and timing parameter;Based on the actual time stamp of the vertical synchronization signal of each display clock monitor, construct timing drift characteristic model;Select timing reference source or generate virtual reference clock;Delay compensation instruction is inserted in GPU rendering command stream, and the scanning start offset address of the frame buffer of secondary display is adjusted dynamically, and the physical clock phase difference between each display is compensated.In addition, for the mixed refresh rate scene, a proactive double buffering queue is established, and a complete frame is selectively output based on the tear risk index.The application can achieve microsecond-level accurate synchronization of multi-screen display at the software level without external Genlock hardware, effectively eliminating the tearing phenomenon caused by heterogeneous screen clock drift and the periodic stutter caused by mixed refresh rate.