14 results about "Extended Display Identification Data" patented technology

The invention discloses a high-resolution and low-delay audio and video transmission method and system, which realize high-quality and low-delay remote audio and video transmission by dynamically negotiating transmission resolution and self-adaptive compression coding. The method comprises the following steps: constructing a resolution negotiation matrix through extended display identification data based on receiving end equipment, and determining an optimal transmission resolution parameter; the compression ratio is dynamically adjusted in combination with network bandwidth fluctuation, a compressed data stream is generated by adopting inter-frame prediction coding, and the anti-interference capability is enhanced through forward error correction and time division multiplexing packaging; and finally, the differential signal pair is transmitted to a receiving end to be decoded and restored into a standard audio and video signal. According to the method, the transmission delay is remarkably reduced while the high-resolution image quality is ensured, the method effectively adapts to a complex network environment, the transmission distance and stability are considered, and the method is suitable for application scenes such as remote conferences and real-time monitoring which have high real-time requirements.

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 electronic device with a connector supporting a multi-connection standard includes a connector, a processor, a controller, an extended display identification read-only memory, a first multi-tasking circuit, and a second multi-tasking circuit. The first multi-tasking circuit is coupled to at least one signal pin of the connector, the processor, and the controller. The second multi-tasking circuit is coupled to the extended display identification read-only memory, the first multi-tasking circuit, the processor, and the controller. In an update state, the controller is electrically connected to the extended display identification read-only memory via the second multi-tasking circuit, and updates extended display identification data in the extended display identification read-only memory with update data.

An extended display identification data management apparatus and method, the extended display identification data management apparatus being suitable for a plurality of displays each storing an extended display identification data and a chip module, a microprocessor generating a first control signal and a second control signal to control a first multiplexer and a second multiplexer, and the chip module is used for transmitting the extended display identification data to the corresponding storage device to be stored and used as stored identification data, reading the stored identification data and respectively generating display pictures of the display according to the stored identification data. The memory address of the extended display identification data is managed by the microprocessor, so that the function of locking the extended display identification data can be performed by the microprocessor even if the memory address of the extended display identification data cannot be fixed in the chip module.

The present disclosure provides a method of controlling a high-definition multimedia interface (HDMI). The method can include reading, by a source device, an extended display identification data (EDID) of a sink device when the sink device is connected with the source device, writing information about the source device into a state and control data channel (SCDC) structure, and reading the EDID again by the source device based on a predetermined field value included in the SCDC structure.

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.

The invention provides an interface display method and electronic equipment. The method can be applied to the electronic equipment, the electronic equipment comprises a display screen, the display screen has a first refresh rate, and the method comprises the steps that in response to a first instruction, a first window is displayed on the display screen, a first interface is displayed in the first window, the first instruction is used for creating a first virtual screen, and the first virtual screen has the first refresh rate; the first interface is mapped to a first window from an interface of a first virtual screen, the first virtual screen corresponds to first extended display identification data EDID, the first EDID is different from at least one second EDID historically stored in the electronic equipment, and each second EDID corresponds to external equipment historically connected or a second virtual screen historically created. According to the interface display method disclosed by the embodiment of the invention, in the process that the electronic equipment displays the virtual screen interface based on the window created by the display screen, the problem that the display screen flashes black can be avoided, and the use experience of a user is improved.

A display includes: a memory, a physical switching element and a controller. The memory is configured to store multiple pieces of candidate extended display identification data. The physical switching element is configured to be triggered by external force to generate a first switching signal. The controller is connected to the physical switching element and the memory. The controller is configured to control a displayed screen according to original setting data among the pieces of candidate extended display identification data, and adjust the displayed screen according to target data that is different from the original setting data among the pieces of candidate extended display identification data after receiving the first switching signal.

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.

A method of managing EDID is implemented by a management apparatus that is connected to a chip module and a display. The management apparatus includes an MCU, an IO interface and a storage medium. The IO interface includes a connection port adapted to be connected to the display and associated with the storage medium. The display stores EDID related to itself. The method includes steps of: the MCU obtaining the EDID from the display; the MCU storing the EDID in the storage medium that is associated with the connection port which the display is connected to; and the MCU generating and sending a notification signal that is related to the storage medium to the chip module, so that the chip module obtains the EDID from the storage medium based on the notification signal, and controls the display that corresponds to the storage medium to display content based on the EDID.

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.

The invention discloses a multimedia informatization conference management method and system, and relates to the technical field of multimedia informatization conference management.The method comprises the steps that SHA256 hash calculation is carried out on extended display identification data blocks of downstream equipment before a conference, and then hash is carried out on a splicing result to obtain a topological fingerprint before the conference; converting the initial value of the number of the downstream devices of the repeats into binary vectors, performing bitwise exclusive or in sequence to obtain pre-meeting anchoring values, and constructing a topological shadow tree in combination with the mapping relation between the repeats and the downstream devices; marking a zero-topology window repetitor with the real-time downstream equipment number of 0 in the case, tracing a nearest sink node in a topological shadow tree to form a minimum influence domain, extracting an influenced display cluster identifier, and locally modifying a source cluster mapping matrix as a placeholder source; calculating an anchor value and a topological fingerprint, and verifying topological consistency through two dimensions of an anchor difference and a topological fingerprint Boolean quantity; after the conference, key data are integrated to be archived as conference management files, accurate conference topology management, efficient exception handling and problem tracing are achieved, and stable operation of the conference is guaranteed.