Systems and methods for signal communication over an optical link are described. One aspect includes receiving a source CONFIG1 signal from a DP master device and a sink CONFIG1 signal from a sink terminal. The source and sink CONFIG1 signals are analyzed. It is determined whether a signal transmission mode is a DP protocol. For a DP protocol, a pair of source AUX signals is received from the DP master device. A pair of sink AUX signals is received from the sink terminal. Communication resource contention between the source and sink AUX signals is identified. A communication direction of the communication resources is transitioned to give the source AUX signals precedence over the sink AUX signals. The source AUX signals are transferred to the sink terminal via the communication resources. The direction of the communication resources is again transitioned. The sink AUX signals are transferred to the DP master device.

Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for a media device receiving from a source media device a request about a media capability of the media device, and identifying a data block indicating a default capability of the media device. The media device can further select a data unit of the data block to be replaced based on a media capability of a downstream media device attached to the media device. Afterward, the media device can modify the data block by replacing the selected data unit by information indicating the media capability of the downstream media device to generate a modified data block to represent a combined media capability of the media device and the downstream media device. In addition, the media device can send the modified data block to the source media device.

In some embodiments, an apparatus comprises a media module and a modification module included in an embedded appliance. The media module is configured to receive a first media signal associated with a first input port of the embedded appliance and a second media signal associated with a second input port of the embedded appliance. The media module is configured to identify a first set of media signal parameters based on the first media signal. The modification module is configured to receive a modification instruction associated with a session format having a second set of media signal parameters different from the first set of media signal parameters. The modification module is configured to modify the first media signal based on the first set of media signal parameters and the modification instruction to produce a first modified media signal in the session format and having the second set of media signal parameters.

A screen projection control method and an electronic device are provided. The screen projection control method includes detecting that a first electronic device and a second electronic device are connected with each other through a physical bus and confirming screen projection reference parameters based on the second electronic device and the physical bus; establishing a network link between the first electronic device and the second electronic device; obtaining multimedia data to-be-outputted by an output unit of the first electronic device; and transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters to allow the second electronic device to output the multimedia data.

An electronic device includes a first interface configured to obtain a first media data of a first source device; a second interface configured to obtain a second media data of a second source device; a processing device configured to generate a third media data; and an output device configured to output media data. The media data may be the first media data, the second media data, or the third media data. The third media data affects the first media data or the second media data if the third media data and the first media data are simultaneously outputted, or the third media data and the second media data are simultaneously outputted. The processing device is configured to process the first media data and the second media data to obtain a processing result, the processing result being used to generate presentation data indicating correspondences between interfaces and the media data.

A display device includes a controller, a display processor, a resolution converter, and a display screen. The controller, in response to first request of setting a current signal source type to a first signal source type which is a type of a signal source for providing display data having a target resolution and a first definition, generates and transmits a first control signal corresponding to the first request. The display processor receives and forwards the first control signal from the controller. The resolution converter converts the initial display data into first display data having a target resolution and a first definition in response to the first control signal, and transmits the first display data to the display processor. The target resolution is greater than the initial resolution. The first definition is greater than a definition of display data obtained by stretching the initial display data and having the target resolution.

A display method and a display apparatus are provided in the present disclosure. The display method, applied to a display apparatus, includes obtaining a first image signal from an electronic apparatus, where the first image signal is a signal configured for displaying on one display apparatus; according to the first image signal, outputting first image data in a first display region; obtaining first instruction, where the first instruction is configured to instruct that the first display region is at least divided into a first display sub-region and a second display sub-region; obtaining a second image signal from the electronic apparatus, where the second image signal is a signal configured for displaying on at least two display apparatuses; and according to the second image signal, outputting first sub-image data in the first display sub-region and outputting second sub-image data in the second display sub-region.

A display device and a control method therefor are disclosed. The display device includes: a display; a transmitter configured to transmit an infrared (IR) signal; and one or more processors configured to: control the display to display a multi-screen including a plurality of images based on a plurality of image signals received from a plurality of source devices, each of the plurality of source devices using a same IR protocol; perform, based on a user command indicating a first image from among the plurality of images, a process for selectively controlling a first source device, from among the plurality of source devices, which provides the first image; and transmit an IR signal for selectively controlling the first source device through the transmitter.

A graphics processing unit (GPU) of a processing system transmits pixel data for a frame to a display in a compressed burst, so that the pixel data is communicated at a rate that is higher than the rate at which the display scans out the pixel data to refresh the frame at a display panel. By transmitting pixel data for the frame in a compressed burst, the GPU shortens the time spent transmitting the pixel data and extends the time before the next frame of pixel data is to be transmitted. During the extended time before the next frame of pixel data is to be transmitted, the GPU saves power by placing portions of the processing system in a reduced power mode.

An electronic device with a connector supporting multiple connection standards includes the connector, a processor, a controller, an EDID (Extended Display Identification Data) ROM, a first multiplexer circuit and a second multiplexer circuit. The first multiplexer circuit is coupled to at least one signal pin of the connector, the processor and the controller. The second multiplexer circuit is coupled to the EDID ROM, the first multiplexer circuit, the processor and the controller. Under an update state, the controller is electrically connected to the EDID ROM through the second multiplexer circuit, and updates EDID in the EDID ROM with update data.