220 results about "Extended Display Identification Data" patented technology

A method for configuring a remote-control system includes querying via a bus a High Definition Multi-Media Interface (HDMI) display for an Extended Display Identification Data (EDID) for the HDMI display; receiving via the bus from the HDMI display the EDID for the HDMI display; and storing via a processor in a memory the EDID and a link between the EDID of the HDMI display a set of command codes configured for controlling the HDMI display.

Techniques are disclosed for passing Extended Display Identification Data (EDID) or Enhanced-EDID (E-EDID) in an uncompressed multimedia communication system including a video sink side communicatively coupled to a video source side. An EDID AVAILABLE packet is communicated via a serial backward channel from the video sink side. A REQUEST is communicated to the video sink side via a serial forward channel to indicate the video sink side can send the EDID data. The EDID data is then communicated to the video sink side via the serial backward channel.

The invention relates to an adaptive format conversion method based on high dynamic range video, comprising: acquiring parameters or user-defined parameters of a terminal display device through EDID (extended display identification data); setting a converter at the terminal display device to perform signal type conversion or video image processing on program signals, or setting an encoder at a server to re-encode the program signals so that the signals adapt to the terminal display device; receiving, by the terminal display device, a video file, or decoding, by the terminal display device, video bit streaming or the video file. The compatibility problem between HDR (high dynamic range) video and / or SDR (standard dynamic range) video program sources of different formats and different display devices is well solved, processing may be performed according to user-defined parameters, the program sources of different formats may also be adaptively displayed on different display devices in optimal state, steps for the display devices to set different parameters according to the different program sources are omitted, and operation is more facilitated for a user.

In a KVM switch system in which one or more consoles and one or more computers are connected to a KVM switch via dongles (console dongles and computer dongles, respectively), a method is provided for transferring the extended display identification data (EDID) of a display of a console to a computer. When the console is booted, the corresponding console dongle queries the display to obtain its EDID, and transmits it to the computer dongle via the KVM switch. The computer dongle stores the received EDID in its memory. The computer dongle also stores a default EDID in its memory. When the computer queries EDID, the computer dongle provides either the received EDID to the computer, or provide the default EDID if no EDID has been received from the KVM switch.

The present invention provides a method and apparatus for automatically detecting whether an external monitor is connected to a video port of an information handling system. In various embodiments of the invention, detection of the display is accomplished by periodic polling to detect the presence of an Extended Display Identification Data (EDID) signal as an indication of whether a display has been plugged in or removed. In embodiments of the invention, hardware polling is implemented to provide the interrupt-driven mechanism, thereby relieving software of the performance degradation associated with polling the video port at very short time intervals.

An electronic device includes a Consumer Electronic Control (CEC) device unit and a connected-device determination unit. The electronic device is capable of being connected to another electronic device having Extended Display Identification Data (EDID) information regarding capability, via a communication cable that enables transmission of video and audio data and enables exchange of connected-device control information. The connected-device determination unit determines a vendor of the other electronic device on the basis of at least one of the EDID information and a CEC message of the CEC unit obtained via the communication cable from the other electronic device, and changes processing on the basis of the vendor of the other device connected by the communication cable.

A display controller includes a processor arranged to process executable instructions and associated data, a single memory device for storing the executable instructions and associated data and EDID corresponding to the display device that is always available for access by the data ports and / or the processor regardless of a power state of the display controller, a data buffer for storing EDID read from the memory device, and an arbitration circuit for arbitrating memory device access requests between the processor and a requesting data port wherein when the data buffer is not almost empty, then the arbitration circuit grants the processor access to the memory wherein when the data buffer is almost empty, then the arbitration circuit grants only the requesting data port access to them memory so as to replenish the data buffer with read EDID.

An image display device and method of changing extended display identification data (EDID) information includes a first storage unit which stores extended display identification data (EDID) information to be provided to the source providing device, a second storage unit which stores at least one version of the EDID information which is different from the EDID information stored in the first storage unit, and a control unit which replaces the EDID information stored in the first storage unit with the different version of the EDID information stored in the second storage unit if an EDID information change request signal is input. Accordingly, compatibility of the EDID information between the source providing device and the image display device can be maintained.

A video data processing method and / device for display adaptive video playback are disclosed. The video data processing method includes transmitting extended display identification data (EDID) indicating capabilities of a sink device to a source device via an interface, the EDID including electro optical transfer function (EOTF) type information for identifying EOTF supported by the sink device, receiving video data from the source device via the interface, and playing the received video data back.

A video controller having a processor for processing executable instructions and associated data and a number of data ports, a method of acquiring extended display identification data (EDID) by a requesting one of the data ports is described. When on-board power supply is activated, an off-board power supply is deactivated and then the now active on-board power supply provides power to a memory device used to store the EDID and the executable instructions and associated data and to an on-board clock circuit capable of providing a high frequency clock signal. The on-board clock circuit, in turn, provides the high frequency clock signal from the on-board clock circuit to the memory device and if a memory read operation had been in progress when the on-board power supply was activated, then the memory read operation is completed.

The invention discloses a testing method and a testing device for multimedia electronic equipment for carrying out EDID data detection on at least three channels of HDMI interfaces. The testing method for the multimedia electronic equipment comprises the following steps: respectively connecting at least three channels of high definition multimedia interfaces (HDMI) of equipment to be tested; reading extended display identification data (EDID) corresponding to the high definition multimedia interfaces in a serial communication mode and comparing the read extended display identification data with corresponding prestored extended display identification data; and if a comparison result is that the read extended display identification data is different from the corresponding prestored extended display identification data, writing the corresponding prestored extended display identification data into the equipment to be tested by the high definition multimedia interfaces. The testing method and the testing device of the invention can be used for EDID data detection of the at least three channels of HDMI interfaces.

The invention discloses a control method and a control device of display equipment, and the corresponding display equipment. The control method comprises the steps of: selecting extended display identification data EDID information matched with a data format according to the data format of an obtained video signal; and controlling the display equipment to display the video signal in the corresponding data format according to the selected EDID information. According to the display equipment, the control method and the control device thereof, EDID data matched with the data format can be selected according to the data format of a signal input by signal source equipment or the data format input by a user, and the EDID data can be used by the display equipment when displaying the video signal. By adopting the control method, the compatibility between the display equipment and the signal source equipment is improved, and the display resolution of the display equipment can be utilized to the maximum extent.

Preferred format parameters including timing that is contained in an extended display information data (EDID) EEPROM in a digital video display system can be dynamically established by a user. In this way, when the video display system engages a source of video in a “plug and play” context, instead of communicating to the source what formats are supported and then accepting a format selected by the source, the preferred format is sent from the EEPROM to the source so that the video display system receives video from the source in the user-desired format.

In a VESA standard compliant display controller having a processor arranged to process executable instructions and associated data, a memory device arranged to store EDID and the executable instructions and associated data, a number of data ports coupled to the memory device by way of an 12C data bus each coupled to a host device, a method of transferring EDID from the memory device over the 12C data bus to a requesting one of the data ports while servicing a processor memory access request without clock stretching.

The invention provides a remote transmission system for ultra-high-definition video signals. The remote transmission system comprises a signal source interface end, a single optical fiber and a display interface end. A second optical signal transmitted by the display interface end is separated from the optical fiber by the signal source interface end and is converted into a second serial signal, EDID (extended display identification data) information is obtained by deserializing, a plurality of first serial signals are obtained by decoding and serial conversion according to a display resolution ratio output video signal and are respectively converted into first optical signals, the first optical signals are transmitted to the display interface end through the optical fiber after wavelength division multiplexing, the EDID information is converted into a second serial signal by the display interface end, converted into the second optical signal and transmitted to the signal source interface end through the optical fiber, the first optical signals are separated from the optical fiber, and the video signals are obtained by deserializing and coding after the first optical signals are converted into a plurality of first serial signals. The ultra-high-definition video signals can be bidirectionally transmitted by the single optical fiber, and the remote transmission system is high in reliability and low in cost, and supports a display end to display with the best resolution ratio.

In a multidisplay system, an image is displayed without necessitating a display control signal supplied from an external device. Each image display device in the multidisplay system includes an interface for receiving image data and transferring the image data to an image display device at a downstream location. Each image display device also includes a DDC (Display Data Channel) communication processor and a rewritable memory for storing EDID (Extended Display Identification Data) information. When another image display device is connected at a downstream location, EDID information is acquired from the connected image display device via the DDC communication processor, and display resolution information and interconnection information are set. In particular, the display resolution described in the EDID information is rewritten by the display resolution information set in the above process.

An electronic device is disclosed. The electronic device receiving content from an external device includes a memory configured to include a first HDMI version of Extended Display Identification Data (EDID) information, a second HDMI version of EDID information, the second HDMI version being an upgraded version of the first HDMI version and, at least one resolution information supportable in the electronic device other than the first HDMI version of EDID information, an external interface configured to communicate with the external device and a processor configured to cause the second HDMI version of EDID information to not be read by the external device, to cause the EDID information of the first HDMI version among the EDID information to be read by the external device, and to cause the at least one resolution information to be read by the external device.

A high-definition multimedia interface (HDMI) receiver apparatus is provided. The HDMI receiver apparatus includes a pin, a control module, and an extended display identification data (EDID) module. The pin is used to receive an HDMI cable connection voltage in a first operation state and output a hot plug detection signal in a second operation state. The control module is connected with the pin. When the pin receives the HDMI cable connection voltage in the first operation state, the control module switches the pin to the second operation state from the first operation state and outputs the hot plug detection signal to an HDMI transmitter apparatus through the pin, such that the HDMI transmitter apparatus reads EDID information according to the hot plug detection signal. The EDID module is used to store the EDID information.

The invention provides a display output control method and an electronic device. The method includes acquiring first type information of a display of the electronic device; determining first storage areas that the first type information corresponds to according to the corresponding relation between the preset type information and the storage areas, wherein extended display identification data (EDID) information matched with the type information is stored in each storage area, and different EDID information is stored in different storage areas; reading the EDID information matched with the first type information from the first storage areas; controlling display output of the display according to the read EDID information. Users do not need to set different configuration modes according to different displays, the display output control process is simplified, and the generality of a main board is improved.

A method of color-real adjustment and system for adjusting a display device is disclosed, the system includes a server for outputting an image triggering signal and inputting an image extraction signal, performing a color-real process on the image extraction signal to obtain color data, transforming the color data into a color-real parameter and outputting the color-real parameter; an pattern generator for outputting an image pattern according to the image triggering signal; the display device for displaying an image corresponding according to the image pattern; an digital camera for detecting colors of the displayed image to output the image extraction signal; and a burner for storing the color-real parameter into a memory of the display device, wherein the color-real parameter matches a format of extended display identification data.

In a VESA standard compliant display controller having a processor arranged to process executable instructions and associated data, a memory device arranged to store EDID and the executable instructions and associated data, a number of data ports coupled to the memory device by way of an I2C data bus each coupled to a host device, a method of transferring EDID from the memory device over the I2C data bus to a requesting one of the data ports while servicing a processor memory access request without clock stretching.

The invention relates to an ultra-high resolution input and multi-output video vertical extension and segmentation device, which is connected with a computer and a display device. The device comprises at least one video input interface with ultra-high resolution input capability, a programmable EDID (extended display identification data) circuit connected with the video input interface, an input video frame cache circuit connected with the output end of the video input interface, an output video frame synchronous generation circuit connected with the output end of the input video frame cache circuit and a plurality of video output interfaces connected with the output end of the output video frame synchronous generation circuit. By adopting the device, a plurality of vertical longitudinal screens can be extended from single high-resolution input for constituting the large screen, and the price is also very low. The vertical high resolution multi-screen high-performance extension can be really realized.

A method for determining a digital signal of a digital display is provided. An extended display identification data (EDID) of the display is read by a computer via a display data (DDC) bus. Firstly, a predetermined parameter is outputted from the computer via the DDC when a user utilizes the computer to reset the resolution of the display. Then, the predetermined parameter is received and saved by the digital display. A horizontal synchronization signal, a vertical synchronization signal and an analog video signal outputted from the computer are received and saved by the digital display. an actual parameter is calculated by the digital display according to the horizontal synchronization signal and the vertical synchronization signal. Lastly, the digital video signal is determined by the digital display according to the predetermined parameter and the actual parameter.

A display controller coupled to a display device by way of a display interface and to a host device by way of a data port that includes a processor arranged to process executable instructions and associated data, a single memory device for storing the executable instructions and associated data and EDID corresponding to the display device, and a bridge portion coupling the single memory device to the host device by way of the data port, wherein the bridge portion is always in a powered on state thereby providing access to the single memory device by the host device even when the display controller is in a powered off state such as during a boot up process when the display controller is in the powered off state.

Provided is a device having functions of high definition conversion and audio supporting, including an analog video and audio unit, an extended display identification data (EDID) electrically-erasable programmable read-only memory (EEPROM) module, an ADC, a high-definition multimedia interface (HDMI) module, a memory control unit (MCU), and a power control module. The ADC converts an analog signal received through the analog video and audio unit into a digital signal, which is then converted by the HDMI module into an image signal to be applied to a displaying device (such as a displaying screen or a TV set). The EDID EEPROM module provides the optimum resolution to the displaying device. As such, WUXGA (Widescreen Ultra Extended Graphics Array) resolution can be realized and audio effect is supported.

The invention discloses a system and a method for multi-screen display switching. The method comprises the following steps of according to different display equipment, correspondingly setting different priorities; when the display equipment are accessed, detecting the accessed equipment, obtaining EDID (extended display identification data) information of the accessed equipment, and calling the preset priority information to compare and analyze the accessed display equipment, so as to obtain the display equipment with optimum output; and meanwhile, according to the EDID information of the accessed equipment, obtaining parameter setting information corresponding to the display equipment with optimum output, and finally outputting through an output display module. Compared with the prior art, since the priority information is preset, the different accessed display equipment are analyzed and sieved according to the priority information, so as to determine the display equipment with highest priority, correspondingly switch to the corresponding output of the display equipment, and realize the automatic identification and switching between multiple display screens.

A projection system and a projection method thereof are provided. A plurality of image source signals is combined into a combination image signal. A host is instructed to provide a plurality of the projection ratios corresponding to the image source signals according to extended display identification data. An image source signal combination unit combines the projection ratios corresponding to the image source signals to form a combination projection ratio corresponding to the combination image signal. A light valve is set to a mode corresponding to the combination projection ratio. The illumination beam is converted to an image beam according to the combination image signal.

A display monitor for a common display data channel uses a DDC access switch to separate the common display data channel, so that regardless of whether the display monitor is powered on or off, a personal computer can access the Extended Display Identification Data (EDID) in the EEPROM, and the low-level voltage of an MCU in the display monitor won't interfere in the access between the personal computer and the EEPROM. When the power of the display monitor is turned on, the DDC access switch closes so that the MCU can access the EDID in the EEPROM.