TW201729070A - Display system for an array of video displays - Google Patents

Abstract

A display system for connecting a computer to a display having EDID information. The display system includes a graphics card and an adapter. The graphics card is in communication with the computer and includes: a graphics processor; a graphics card controller coupled to the graphics processor; and a memory coupled to the graphics card controller and the graphics processor. The adapter coupled to the display and the graphics card, and has an adapter controller, wherein the graphics card controller is configured to query the EDID information from the display and store the EDID information as emulated EDID information in the memory and the graphics processor reads the emulated EDID information from the memory rather than from the display.

Description

Display system for video display array

Display systems with multiple displays of a display array are becoming more and more popular. Such arrays typically comprise a display in the form of n x m displays (eg, 2x4, 3x3, 4x3, and 3x4) or in a single column (eg, 1x4 or 1x6) Form of display. Large displays formed from 5 x 10 displays are also not uncommon. Such displays are typically driven by a computer having one or more graphics cards. Each of the displays transmits extended display identification data ("EDID") information to the computer to enable the operating system of the computer to know the capabilities of the display. The operating system will configure the displays to display one or more information "desktops", for example, a plurality of portions of the video feed content. As long as all displays remain connected and function, the system will generally operate as planned.

Unfortunately, when a display is turned off or fails, the operating system will reorder the displays and the once consecutive video displayed on the displays may become confusing. When the display is replaced or fixedly routed, the operating system does not necessarily return to the same display configuration. Therefore, the so-called "video wall" usually has chaotic video during and after a display failure or cable failure.

In addition, existing systems require significant processing power to drive these video walls. this The number of displays that can be driven, the resolution to which each display can be driven, and/or the large minimal processing power required to drive the system are often limited.

100‧‧‧Display system

110‧‧‧graphic card

111‧‧‧ Peripheral Component Interconnect Quick Interface

112‧‧‧Action peripheral component interconnect quick module

114‧‧‧DP-HDMI converter

116‧‧‧HDBT transmitter

118‧‧‧Magnetic transformer

120‧‧‧RJ45 connector

122‧‧‧Electrically erasable programmable read-only memory

124‧‧‧ Controller

130‧‧‧Regional Network

140‧‧‧Display Adapter

142‧‧‧RJ45 connector

144‧‧‧Magnetic transformer

146‧‧‧HDBT Receiver

148‧‧‧ Controller

149‧‧‧ memory

160‧‧‧ display

162‧‧‧ display

200‧‧‧ display array

211~216‧‧‧ display

300‧‧‧Display array

300’‧‧‧ display array

311~316‧‧‧ display

315’‧‧‧ display

413‧‧‧Graphic Processing Unit

430‧‧‧Switch

431~436‧‧‧Electrically erasable programmable read-only memory

441~446‧‧‧Listed data lines and serial clock lines

505~585‧‧‧

600‧‧‧ display system

610‧‧‧graphic card

612‧‧‧Display 埠 Connector / Display 埠 Interface

614‧‧‧DP-HDMI converter

615‧‧‧High Definition Multimedia Interface Connector

616‧‧‧HDBT transmitter

618‧‧‧Magnetic transformer

620‧‧‧RJ45 connector

622‧‧‧Electrically erasable programmable read-only memory

624‧‧‧ Controller

626‧‧‧Shelter

630‧‧‧Local Network

640‧‧‧Display adapter

642‧‧‧RJ45 connector

644‧‧‧Magnetic transformer

648‧‧‧ Controller

660‧‧‧ display

662‧‧‧ memory

The aspects of the present invention will be best understood by reading the following detailed description in conjunction with the drawings. It should be noted that various features are not drawn to scale in accordance with the standard practice in the art. In fact, the dimensions of the various features may be arbitrarily increased or decreased for clarity of discussion.

1 is a block diagram of an exemplary display system of some embodiments; FIGS. 2A-2C are block diagrams of a conventional display system in which some embodiments do not have a simulation mechanism; FIG. 3A to FIG. 3D is a block diagram of an exemplary display system having a simulation mechanism for some embodiments; FIG. 4 is a block diagram of some embodiments, other details of FIG. 1; and FIG. 5 is a partial embodiment A flowchart of a method for emulating a display identification data; and FIG. 6 is a block diagram of an exemplary display system for some embodiments.

The following disclosure provides many different embodiments or examples for implementing different features of the subject matter provided. To simplify the invention, specific examples of components and configurations are described below. Of course, these are merely examples and are not intended to be limiting. In addition, the present invention may repeat reference numerals and/or letters in various examples. This repetition is for simplicity and clarity, but itself One of the various embodiments and/or configurations described is not a decision.

The invention provides a display system and an extended display identification data (EDID) simulation method. Extended Display Identification Data (EDID) is a data structure provided by a digital display to illustrate the capabilities of the digital display to a video source (eg, a graphics card or set-top box). It is the expansion of the display identification data that enables a modern personal computer (PC) to know what type of display is connected to it and to know the capabilities of such displays. Expanded display identification data is defined by one of the standards published by the Video Electronics Standards Association (VESA). The extended display identification data can include the manufacturer's name and serial number, product type, phosphor type or filter type, timing supported by the display, display size, brightness data, and pixel mapping data.

In the display system, one of the graphics card controllers receives a display from one of the display adapters to expand the display identification data, and stores the extended display identification data as a simulated extended display identification data in the graphic One of the cards can be erased in an Electrically Erasable Programmable Read-Only Memory (EEPROM). In the detailed description, the term "adapter" refers to an external display server key (dongle), an internal server key, a controller card in a display, or one of the controls installed or connected to a display. A daughter card of the card. A graphics card reads the simulated extended display identification data in the electrically erasable programmable read-only memory of the graphics card just as it is read from the display. Even if a display is disconnected from the graphics card, the display system enables the relative positioning of the screens on multiple displays to remain the same.

The controller of the graphics card updates the simulated extended display identification data in the programmable erasable memory of the graphics card based on the model information in the simulation extended display identification data. The controller is via, for example, a universal serial bus ("Universal One interface such as Serial Bus; USB") sends model information to an application. Typically, the universal serial bus interface emulates one or more serial ports to allow a plurality of applications on the host to access one or more of the following communication channels: the controller of the graphics card itself and the display The expanded display identification data, the simulated extended display identification data, a default manufacturing extended display identification data, and a set stored in the controller of the graphic card and formed by a plurality of typical extended display identification data. The application searches for a native resolution corresponding to the desired display on the Internet or in a particular repository based on the model information.

In addition, the graphics card controller modifies the simulated extended display identification data based on the native resolution corresponding to the display. If the application finds the native resolution of the display, the application sends the native resolution back to the graphics card controller. After capturing the native resolution, the application works with a number of online video conversion services (eg Zencoder). Like other similar services based on the cloud, Zencoder receives a "native" video with a specific frame rate, bit rate, resolution, compression method and format via a link or via upload, and then utilizes high computing The ability to convert, scale, reformat, or re-render the video into a desired format, in which case the desired format would be a "pixel perfect" video file and with a single screen The native resolution is fully matched to the combined resolution of the horizontal and vertical pixels of several combinations within multiple screens. The Zencoder then streams the resulting file back to the computer for streaming display by providing a link to one of the files on a storage service, or Zencoder allows the resulting file to be downloaded directly to the personal computer at that individual In the computer, the file can then be used in combination with a plurality of graphics processing units (GPUs) and a plurality of central processing units (CPUs) to output content via a graphics subsystem. Based on our experimental results, when playing a video stream or a video file stored on the end, before and after the optimization process, the graphics The loading of the processing unit and the central processing unit can reduce the utilization of the content to the graphics processing unit/central processing unit from 80% to 20% or lower. This optimization process is what we call "pixel nativeization." (pixel nativization) one of the processes.

In some embodiments, the memory can be an electrically erasable programmable read-only memory array to store simulated extended display identification data for multiple channels. In some embodiments, when the power is first turned on, usually after the product manufacturing process in the factory, if it is detected as blank, the graphics card is used to store the memory of the simulated extended display identification data. The card controller initializes with a preset extended display identification data. In some embodiments, in order to facilitate the reset operation, a jumper or a reset button may be provided or a software command may be issued to reset all the extended display identification data, thereby resetting the product to " Factory preset mode".

Figure 1 is a block diagram of an exemplary display system for certain embodiments. As shown in FIG. 1, a display system 100 is provided. The display system 100 includes a graphics card 110, a plurality of displays 160, and a plurality of display adapters 140. In some embodiments, display adapter 140 can be embedded in display 160. In one embodiment, graphics card 110 provides six video data channels to, for example, six display adapters 140, respectively. That is, the graphics card 110 drives, for example, six displays. The number of displays and display adapters may vary in different embodiments. The mechanisms in all displays and display adapters are similar, so Figure 1 only illustrates a group formed by a display 160 and a display adapter 140, and the other groups of displays and displays are not repeated here. The configuration of the connector.

The system described below contributes to a number of great advantages over prior art systems. One feature that makes this possible is to use a memory on the graphics card 110, that is, to expand the display identification data (electrically erasable programmable read only memory) 122 to store information about each. The display of the display expands the identification information of the display. This is essentially a simulation of the extended display identification information. The prior art system relies solely on the extended display identification information stored in the display 160 that is read by the graphics card and used by the computer. In contrast, the embodiments described herein expand the display identification information stored in the display identification data (electrically erasable programmable read only memory) 122 as if it were conventionally from the display 160. Read the extended display to identify the same information. Thus, if a display is disconnected, faulty, or missing, although prior art systems would behave as if the display were not present and cause a number of problems, the embodiments described herein behave as if the displays were present and both It is considered the same. Loss of one display, two displays, or all displays will not affect the operation and output of the computer and graphics card 110.

In addition, the system of the present invention allows the computer to detect when a display is attached, removed, powered on or powered off, or to detect various states of the display, and to allow the computer to store the information or act accordingly. Additionally, prior art systems read only a portion of the extended display identification information from display 160, however, the system of the present invention allows all or some of the extended display identification information to be read from display 160. In addition, the system of the present invention can store extended display identification information about the display in the extended display identification data 122 and can be pre-configured from the factory or any location even before any display is physically connected to the system. The extended display identifies the information.

In addition, the system of the present invention allows for modification of the simulated extended display identification information in the extended display identification data 122 based on the actual expanded display identification data information actually read from the display 160. For example, a display with a resolution of 1920×1080 may have extended display identification information, but it should be noted that the display can be set by the operating system to a non-native resolution, such as 1280×720 or 800×600. The native resolution of the display is actually fabricated in the actual liquid crystal display (LCD) panel used in the display. The exact number of pixels that match the number of horizontal and vertical pixels, which may be different from the resolution of the display as reported by the extended display identification of the display. Such non-native resolutions will show scaling or stretching artifacts and appear to be "blurred" or unclear when viewed on a display. Therefore, when storing the extended display identification information from the display 160, the system of the present invention can use the data library to find information about the local resolution of the display, and only as a simulation extended display identification with respect to the local resolution. Data information is stored. Therefore, the ability to set a non-native resolution that looks poor is eliminated. This is called "expanding display identification data localization". The use of the extended display identification data stored in the extended display identification data 122 enables any type of extended display identification information to be stored for any particular display 160 without regard to the actual expanded display identification information stored in display 160.

The graphics card 110 is inserted into a motherboard (not shown) of a personal computer via, for example, a peripheral component interconnect interface (PCI Express Interface) 111. The graphics card 110 can include a Mobile PCI Express Module (MXM) 112, a video converter 114, an audio/video (A/V) transmitter 116, and a A magnetic transformer 118, an RJ45 connector 120, a memory 122 and a controller 124. The Mobile Peripheral Component Interconnect Express Module (MXM) is an interconnect standard for graphics processing units (MXM graphics modules) in laptops that use fast peripheral components. Interconnecting a fast module with a mobile peripheral component provides flexibility in creating a graphics card with the appropriate level of graphics processing power. The mobile peripheral component interconnect quick module 112 is coupled to the video converter 114, for example, a display high-definition multimedia interface (HDMI) converter. For example, the mobile peripheral component interconnect module 112 provides six video data channels to the video converter 114 via a display interface. The display system is a digital display interface developed by the Vision Standards Association (VESA) and is mainly used to connect a video source to a computer display. The display, however, can also be used to carry audio data, general serial bus data, and other forms of information.

The output of video converter 114 is coupled to audio/video transmitter 116 and an extended display identification data (electrically erasable programmable read only memory) 122. The video converter 114 receives a video material and outputs the video data to the audio/video transmitter 116 via a high definition multimedia interface. The audio/video transmitter 116 is further connected to the magnetic transformer 118 and transmits audio/video signals. Prior art examples of audio/video transmitters and audio/video receivers are: Valens chipsets using the HDBaseT standard and Aptovision BlueRiver chipsets using IP-based standard systems. Those of ordinary skill in the art will appreciate upon reading the present invention that other chipsets having other standards can also be used as the audio/video transmitter 116. The audio/video signal can be HDBaseT. HDBaseT is a type of uncompressed high-definition video signal transmitted using a standard connector (RJ45) via a common category of cables (normal Cat5 can be used, but Cat6e or higher cables reach a longer range) , consumer audio and commercial connectivity standards for audio signals, power signals, home network connection signals, Ethernet signals, universal serial bus signals, and certain control signals. The HDBaseT can be delivered via a Category 6a cable or higher category cable up to 100 meters in length, using an 8P8C modular connector of the type commonly used for area network connection. Magnetic transformer 118 is designed and manufactured to comply with appropriate standards, such as the HDBaseT standard.

The video data from the audio/video transmitter 116 is transmitted to a regional network 130, such as an Ethernet network, using the RJ45 connector 120. For example, HDBaseT supports the 100Mbit/s version of Ethernet over twisted pair, which is called 100BASE-T. This provides Internet access or enables televisions, stereos, computers, and other devices to communicate with each other and access multimedia content stored on the LAN, including video, images, and music. In some In an embodiment, the area network 130 for carrying video data can be replaced with the Internet and with appropriate security guidance.

The controller 124 is coupled to the extended display identification data (electrically erasable programmable read only memory) 122 and to the two sides of the magnetic element 118. The controller 124 can be a digital signal processor, a processor, a microprocessor or a microcomputer on a chip. The controller 124 receives one of the displays 160 from the area network 130 to expand the display identification data, and stores the extended display identification data as a simulated extended display identification data in the memory 122 of the graphic card 110 (eg, electrically erasable Stylized read-only memory). More details of transferring such extended display identification data to controller 124 will be described later. The action peripheral component interconnect quick module 112 reads the simulated extended display identification data in the memory 122 of the graphics card 110 as if it were read from the display 160. In some embodiments, the memory 122 can be an electrically erasable programmable read-only memory array to store simulated extended display identification data for multiple channels. In some embodiments, the extended display identification data 122 of the graphics card 110 for storing the simulated extended display identification data is initialized with a predetermined extended display identification data during manufacture. In some embodiments, to facilitate the reset operation, a jumper or a switch can be configured to reset all of the extended display identification data one at a time.

In this embodiment, graphics card 110 transmits, for example, six video data channels and drives six display adapters, respectively. Therefore, the controller 124 is configured to receive the extended display identification data of the six channels, and store the extended display identification data in an electrically erasable programmable read only memory array. In this embodiment, a plurality of control signals from controller 124 and one of the video data from audio/video transmitter 116 are superimposed on the input of magnetic transformer 118 and then transmitted to display adapter 140.

The display adapter 140 includes an RJ45 connector 142, a magnetic transformer 144. An audio/video receiver 146 and a controller 148. Magnetic transformer 144 is designed and manufactured to comply with appropriate standards, such as the HDBaseT standard. The audio/video receiver 146 receives the video material from the audio/video transmitter 116 using the RJ45 connector 142 and the regional network 130. Prior art examples of audio/video transmitters and audio/video receivers are: Valens chipsets using the HDBaseT standard and Aptovision BlueRiver chipsets using IP-based standard systems. Those of ordinary skill in the art will appreciate upon reading the present invention that other chipsets having other standards can also be used as the audio/video receiver 146.

Display 160 is coupled to display adapter 140 via a high definition multimedia interface. Even if the display is turned off, a memory 162 (e.g., electrically erasable programmable read only memory) for storing a display identification data for the display 160 can be powered by the high definition multimedia interface. The controller 148 of the display adapter 140 can read and store the extended display identification data of the display 160 in a memory 149 (eg, electrically erasable programmable read only memory), but some embodiments are not The extended display identification data is stored locally in a memory 149. Controller 148 can be a digital signal processor, a processor, a microprocessor or a single-chip microcomputer. The controller 148 of the display adapter 140 communicates with the controller 124 of the graphics card 110 to facilitate the transfer of the display identification information between the display 162 and the graphics card 110. In an alternate embodiment, the display's extended display identification data is read directly by the graphics card without the need for a controller 148.

The operation of the system is described below in the description of Figure 5. In summary, the graphics card 110 operates in conjunction with the adapter 140 to retrieve the extended display identification information from the display 160, and store the extended display identification information in the electrically erasable programmable read-only memory 122, and Use this simulation to expand the display identification information during the operation of the display. The information of the simulated extended display identification information in the programmable erasable memory 122 can be changed, and the display information can be changed. The non-native resolution of the indicator 160 is removed. In addition, after first turning on the system containing the graphics card 110, even if no display is connected to the system, the virtual extended display identification information will be stored in the simulated extended display identification data can be erased. Stylized read-only memory 122. After a Hot Plug Detect (HPD) high signal is generated, the actual display information is obtained, and the information is replaced by the virtual erasable programmable display memory information in the programmable erasable memory 122. . If the display 160 is disconnected from the graphics card 110, the system continues to operate as if the display 160 were connected, since the system uses the electronically erasable programmable read-only memory 122 to simulate extended display identification information. Instead of using the actual extended display identification information in a display. As described in the following paragraphs, this system facilitates having a consistent layout of a plurality of displays relative to each other.

2A through 2C are block diagrams of one of the conventional display systems that do not have a simulation mechanism in accordance with some embodiments. As shown in FIG. 2A, the display array 200 having one of the six displays 211 to 216 is connected to a graphics card (not shown). The displays 211 to 216 are used to display the characters "A", "B", "C", "D", "E" and "F".

If the display 215 is disconnected from the graphics card (not shown), as shown in FIG. 2B, the displays 211 to 214 and the display 216 no longer display the same character, but display "B", "D", "C", "A" and "F". This is because if the configuration between at least one of the displays and the graphics card changes, the graphics card only scans the displays 211 to 214 and 216. Also, the graphics card may not scan all of the displays 211 through 216 in the same order, thereby causing the video material to be displayed on the displays 211 through 214 and 216 to be reconfigured. Thereafter, if the display 215 is reconnected to the graphics card, the graphics card scans all of the displays 211 through 216 again. As shown in FIG. 2C, displays 211 to 216 display "D", "B", "F", "C", "A" and "E". The scanning performed by the graphics card causes the video data being displayed on the displays 211 to 216 to be in another way. The style is reconfigured. One can appreciate that this misalignment will cause a single video image to be spread across displays 211 through 216.

3A through 3D are block diagrams of an exemplary display system having an emulation mechanism in accordance with some embodiments. As shown in Figures 3A and 1, a display array 300 having six displays 311 through 316 is coupled to a graphics card 110 and is coupled to a plurality of display adapters (not shown), respectively.

The controller 124 of the graphics card 100 reads and stores an extended display identification information for each of the displays 311 to 316 in the extended display identification data information erasable programmable read only memory 122. The action peripheral component interconnect quick module 112 reads the simulated extended display identification data in the memory 122 of the graphics card 110 as if it were read from the displays 311 to 316. Therefore, as shown in FIG. 3A, displays 311 to 316 are used to display characters "A", "B", "C", "D", "E" and "F".

In this example, if the display 315 is disconnected from the graphics card 110, the mobile peripheral component interconnect quick module 112 continues to read the simulated extended display identification data of the display 315 and continues to see a display there (even if that No such display). Thus, even if the display 315 is turned off, all of the simulated extended display identifications of the electrically erasable programmable read only memory 122 of the graphics card 110 to be read by the mobile peripheral component interconnect module 112 remain the same. The Action Peripheral Component Interconnect Express module 112 reads the simulated extended display identification data in the electrically erasable programmable read only memory 122 as if it were read from the display 315, and just as the display 315 is still connected Output a video data. Therefore, as shown in FIG. 3B, the displays 311 to 316 are used to display characters "A", "B", "C", "D", blank, and "F".

Thereafter, if the display 315 is reconnected to the graphics card 110, the graphics card 110 detects a hot plug detection event (HPD high event), thereby triggering the expansion of the display 315. The charge display identification data is compared with one of the simulated extended display identification data in the electrically erasable programmable read only memory 122. If the two are the same, nothing will happen. The Action Peripheral Component Interconnect Express Module 112 reads the simulated extended display identification data in the electrically erasable programmable read only memory 122 as if it were read from the display 315 and outputs a video as in Figure 3A. data. Therefore, as shown in FIG. 3C, displays 311 to 316 are used to display characters "A", "B", "C", "D", "E" and "F".

In some embodiments, as shown in FIG. 3D, if a new display 315' is replaced with the display 315, the controller 124 detects the electrically erasable programmable read only memory 122 (the display) 315) The simulation expands the display identification data to a new one to expand the display identification data. At this time, the controller 124 stores the new extended display identification data of the new display 315' in the electrically erasable programmable read only memory 122. At the same time, the simulated extended display identification data of the electrically erasable programmable read-only memory 122 of the graphics card 110 except the extended display identification data corresponding to the new display 315' remains the same. The controller 124 of the graphics card 110 updates the simulated extended display identification data in the electrically erasable programmable read only memory 122 of the graphics card 110 to the new extended display identification data corresponding to the new display 315'. As shown in FIG. 3D, displays 311 to 314, 315' and 316 are used to display characters "A", "B", "C", "D", "E" and "F". The relative positioning of the characters on the displays 311 to 314, 315' and 316 is still the same, because the mobile peripheral component interconnects the quick module 112 to read and store the stored extended display identification in the same manner as in FIG. 3A. The data can be erased to the programmable read-only memory address.

Figure 4 is a block diagram of other details of Figure 1 in accordance with some embodiments. As shown in Fig. 4, a graphics card 110 is provided. The graphics card 110 includes a mobile peripheral component interconnect quick module (MXM) 112, a switch 430, a plurality of electrically erasable programmable read only memories 431 to 436, a communication interface 435, and a controller 124. Mobile Peripheral Component Interconnect Express Module 112 A graphics processing unit 413 is provided, and the graphics processing unit 413 provides video data to, for example, six channels.

As shown in FIG. 1 , the controller 110 receives one of the displays 160 to expand the display identification data, and stores the extended display identification data as a simulated extended display identification data in the memory 122 of the graphic card 110 . Figure 4 shows more details on how the controller works. Please refer to Figures 1 and 4. The controller 124 uses the switch 430 to access the electrically erasable programmable read only memory 122 to store the extended display identification data of the display 160. The switch 430 communicates with the controller 124 via an integrated inter-circuit bus (I ² C Bus). I ² C uses two bidirectional open-drain lines: Serial Data Line (SDA) and Serial Clock Line (SCL), which are in multiple numbers. The resistor is pulled up. The controller has a Write Protect line that communicates with the electrically erasable programmable read only memory 122. The controller 124 further updates the electrically erasable programmable read-only memory via the serial data line and the serial clock line (441 to 446) based on the model information in the simulation extended display identification data (for example: DELL U2415). The simulation in 122 expands the display identification data. The controller 124 sends the model information (eg, DELL U2415) to an application via a serial interface (eg, universal serial bus interface 435). Based on the model information (eg, DELL U2415), the application searches the Internet or a specific database for one of the native resolutions (eg, 1920×1200) corresponding to the display 160. A liquid crystal display, a liquid crystal on silicon (LCoS) display or other display - the local resolution refers to its single fixed resolution, ie the actual number of pixels. Since a liquid crystal display is composed of a fixed grating, it cannot change the physical resolution to match the signal being displayed, which means that the best display quality can be achieved only when the signal input matches the local resolution. . In addition, the controller 124 modifies the simulated extended display identification data based on the native resolution (eg, 1920 x 1200) corresponding to the display 160.

For example, if the application finds the native resolution of display 160, the application sends the native resolution back to controller 124. The controller 124 adds the native resolution corresponding to the display 160 to the simulated extended display identification data in the electrically erasable programmable read only memory 431 of the graphics card 110, and the removable graphics card 110 can be erased. The remaining resolution in addition to the local resolution of the simulated extended display identification data in the programmable read-only memory 431.

After extracting the native resolution, the application cooperates with a video player (eg, an on-line video conversion service such as Zencoder). Zencoder is responsible for video scaling that requires high computing power and sends a "pixel perfect" video stream back to the system. Perfection means that the number of pixels in the video source is perfectly consistent with the native resolution of one of the displays. Based on our experimental results, when the video stream is played, the loading of the graphics processing unit 413 and the central processing unit (not shown) can be reduced from 80% to 20%, which is attributed to the actual resolution of the pixels and the display. Perfectly matched.

Communication interface 435 can be any type of communication port. For example, it can be a string of ports, such as a universal serial bus. Those of ordinary skill in the art will appreciate that any type of communication with any of the protocols can be used and interfaced with graphics card controller 124. The communication interface 435 can communicate with, for example, a host computer in which the adapter 110 is mounted. Therefore, the host computer can communicate directly with the graphics card controller 124 via the communication interface 435. For example, a plurality of applications or a plurality of web browsers can be turned on to communicate directly with a graphics card controller 124 to issue commands or requests to the graphics card controller 124.

Since the graphics card controller 124 is in communication with the adapter controller 148, the host computer can effectively issue commands or requests to the display 160. For example, controllers 124 and 148 can cooperate to utilize consumer electronics control ("Consumer Electronics Control; CEC") The agreement issues a command to display 160. Using a consumer electronics control protocol, the host computer can issue commands such as turning a plurality of displays on or off, adjusting contrast or brightness, or adjusting color. Information can also be queried from the display using a consumer electronics control protocol, such as the model number, serial number and date of manufacture of the display.

Those skilled in the art will appreciate the broad scope of use that such unique capabilities allow for reading the present invention. For example, a database may be established at the host computer at the local end or in the cloud, and the database may store information about a display constituting a video wall, which essentially constitutes a directory of a video wall display and about Information about each display. An application or a web browser will cause one of the communication interfaces 435 to the graphics card 110 to be turned "on". The application or the web browser then queries for each of or a selected number of the displays attached to the system; retrieves information about each of the displays; and stores the information in the data In the library. Therefore, a directory of one display wall can be completed almost instantaneously.

Figure 5 is a flow diagram of one method of emulating display identification data emulation according to some embodiments. After first powering up a system, the method can determine whether the simulated extended display identification data normally stored in an electrically erasable programmable read only memory is blank (stage 505). If not, the method continues at stage 530, described below. If the simulation extended display identification data is blank, indicating that the system has not been powered on before, the method stylizes the simulated extended display identification data of the electrically erasable programmable read only memory into a universal extended display identification. Information (stage 510). This general information can be pre-selected and can be used, for example, to identify data information for an extended display having a display of one of the 1024 x 768 displays. Those of ordinary skill in the art will appreciate upon reading the present invention that other values can be selected. After writing the general extended display identification data information to the electrically erasable programmable read only memory, the method checks the process of erasing the programmable read only memory Whether the style is successful (stage 515). If unsuccessful and the number of attempts to write (indicated as "count" in the figure) is less than a predetermined number n (eg, 3) (stage 520), then the system will increment the count and try again to erase the electricity. In addition to the stylized read-only memory for stylization (stage 510). If unsuccessful and the number of attempts to write is equal to or greater than n (stage 520), then the method will let a user know that one of the write attempts to the programmable extended display identification data can be erased from the programmable read only memory. It has failed, for example, by lighting or flashing a Light Emitting Diode (LED) (stage 525).

If the write to the simulated extended display identification data is verified to be correct (stage 515), then the method will wait to detect if a display has been inserted (hot plug detection HPD goes high) (stage 530) . If a display has been detected due to hot plug detection becoming high (stage 530), the extended display identification information is read from the attached display (stage 540). Next, a check is made to see if the header of the read extended display identification data information matches the header of the simulated extended display identification data stored in the electrically erasable programmable read only memory (stage 540) ). The header of the extended display identification data contains the model number and serial number of the attached display, so the method can determine whether a new or different display has been attached. If the information matches, the method continues at stage 585, described below.

If the header information read from the display does not match the header information in the simulated extended display identification data, a new or different display is attached, and the read extended display identification information is used as a simulated extended display. The identification data is stored in an electrically erasable programmable read only memory (stage 550). After writing the extended display identification data information to the electrically erasable programmable read only memory, the method checks whether the stylization of the electrically erasable programmable read only memory is successful (stage 555) ). If unsuccessful and the number of attempts to write (represented as "count" in the figure) is less than a predetermined number n (eg, 3) (stage 560), then the system The count will be incremented and the attempt to program the electrically erasable programmable read only memory again (stage 550). If unsuccessful and the number of attempts to write is equal to or greater than n (stage 560), then the method will let a user know that one of the writes to the simulated extended display identification data can be erased and the programmable read only memory is written. It has failed, for example, by lighting or flashing a light-emitting diode (stage 525).

After successfully writing the actual extended display identification information from the display to the simulated extended display identification data to erase the programmable read only memory, the method will determine whether a localization option has been enabled. If not enabled, the method continues at stage 585. If the localization has been enabled (stage 565), the method will look up the native resolution of the display (stage 570). The native resolution of the display can be stored in a lookup table at the local system, can be located on a remote server, or can be stored in the cloud. Those of ordinary skill in the art, after reading this disclosure, will understand how multiple databases can be created and accessed to maintain, maintain, and update a plurality of native display resolutions for various types of displays. The native resolution of the display (stage 570) is typically retrieved from the database or lookup table using the model of the display.

At this point, the simulated extended display identification data is rewritten to the electrically erasable programmable read only memory to remove the non-native resolution from the resolution list supported by the display (stage 572). As a result, the system will operate the display at its native resolution to provide the perfect picture quality. After writing the extended display identification information to the electrically erasable programmable read only memory, the method checks whether the stylization of the electrically erasable programmable read only memory is successful (stage 575) . If unsuccessful and the number of attempts to write (represented as "count" in the figure) is less than a predetermined number n (eg, 3) (stage 580), then the system will increment the count and try again to erase the electricity. Programmable read-only memory is programmed (stage 572). If unsuccessful and the number of attempts to write is equal to or greater than n (stage 580), then the method will let a user know about the imitation True Expansion Display Identification Data Erasable One of the programmable read-only memory write attempts has failed, for example, by lighting or flashing a light-emitting diode (stage 525).

After a successful write to the electrically erasable programmable read only memory, the method will wait to see if the display is turned off (stage 585). If there is no disconnect, the method waits (stage 585). If the display is indeed disconnected, the method returns to stage 530 to wait for a display to be inserted.

A further embodiment is disclosed in FIG. Figure 6 is a block diagram of an exemplary display system for certain embodiments. As shown in FIG. 6, a display system 600 is provided. The display system 600 includes a graphics card 610, a display 660, and a display adapter 640. In some embodiments, display adapter 640 can be embedded in display 660. In one embodiment, graphics card 610 provides a single video data channel to display adapter 640. The graphics card 610 can be mounted in a housing that is external to a computer system.

The system described below contributes to a number of great advantages over prior art systems. One feature that makes this possible is the use of memory on the graphics card 610, that is, the extended display identification data (electrically erasable programmable read only memory) 622 to store the extended display identification information about the display 660. This is essentially a simulation of the extended display identification information. Prior art systems rely solely on an augmented display stored in display 160 for reading by a graphics card and used by a computer to identify material information. In contrast, the embodiments described herein regard the expanded display identification information stored in the display identification data (electrically erasable programmable read only memory) 622 as if it were conventionally from the display 660. The extended display identification data information read is the same. Thus, if a display is turned off, faulty, or missing, although the prior art system would behave as if the display were not present and cause a number of problems, the embodiments described herein behave as if the display were present. The loss of this display will not affect the computer and graphics The operation and output of the card 110.

Additionally, the system of the present invention allows system 600 to detect when a display is attached, removed, powered on or powered off, or to detect various states of the display, and allows system 600 to store the information or act accordingly. Additionally, prior art systems read only a portion of the extended display identification information from display 660, however, the system of the present invention allows all or some of the extended display identification information to be read from display 660. In addition, the system of the present invention can store extended display identification information about the display in the extended display identification data 122 and can be pre-configured from the factory or any location even before any display is physically connected to the system 600. The extended display identifies the information.

In addition, the system of the present invention allows for modification of the simulated extended display identification information in the extended display identification data 622 based on the actual expanded display identification data information actually read from the display 660. For example, a display with a resolution of 1920×1080 may have an extended display identification information, but it should be noted that the display can be set by the operating system to a non-native resolution, such as 1280×720 or 800×600. . Therefore, when storing the extended display identification information from the display 660, the system of the present invention can use a computer, combine a serial port 626 and utilize a database to find information about the local resolution of the display, and only The simulation of the local resolution is used to expand the display identification information for storage. Therefore, the ability to set a non-native resolution that looks poor is eliminated. The use of the extended display identification data stored in the extended display identification data 622 allows for the storage of any type of extended display identification information for any particular display 660 without regard to the actual expanded display identification information stored in display 660.

The graphics card 610 is external to a computer and interfaces to a computer via a graphics connector (e.g., a display port connector 612 or a high definition multimedia interface connector 615). Display The display system is a digital display interface developed by the Vision Standards Association (VESA) and is mainly used to connect a video source to a computer display. However, the display device can also be used to carry audio data and a universal serial bus. Information and other forms of information. The graphics card 610 can include a video converter 614, an audio/video ("A/V") transmitter 616, a magnetic transformer 618, an RJ45 connector 620, a memory 622, and a controller 624. Display port connector 612 is coupled to video converter 614, such as a display high definition multimedia interface converter.

The output of video converter 614 is coupled to audio/video transmitter 616 and an extended display identification data (electrically erasable programmable read only memory) 622. The video converter 614 outputs a video material to the audio/video transmitter 616 via a high definition multimedia interface. Additionally, the high definition multimedia interface connector is coupled to the audio/video transmitter 616. Thus, the display video from the display port connector 612 or the high definition multimedia interface video from the high definition multimedia interface connector 615 can be transmitted. The audio/video transmitter 616 is further connected to the magnetic transformer 618 and transmits audio/video signals. Prior art examples of audio/video transmitters and audio/video receivers are: Valens chipsets using the HDBaseT standard and Aptovision BlueRiver chipsets using IP-based standard systems. Those of ordinary skill in the art will appreciate upon reading the present invention that other chipsets having other standards can also be used as the audio/video transmitter 616. The audio/video signal can be HDBaseT. HDBaseT is a type of standard connector (RJ45) that transmits uncompressed high-definition video signals via a common category of cables (normal Cat5 can be used, but Cat6e or higher cables reach a longer range) Audio-visual signals, power signals, home network connection signals, Ethernet signals, universal serial bus signals, and consumer electronic and commercial connection standards for certain control signals. The HDBaseT can be delivered via a Category 6a cable or higher category cable up to 100 meters in length, using an 8P8C modular connector of the type commonly used for area network connection. Magnetic transformer 118 is designed and manufactured to comply with appropriate standards, such as the HDBaseT standard.

Video data from the audio/video transmitter 616 is transmitted to a regional network 630, such as an Ethernet network, using the RJ45 connector 620. For example, HDBaseT supports the 100Mbit/s version of Ethernet over a twisted pair called 100BASE-T. This provides Internet access or enables televisions, stereos, computers, and other devices to communicate with each other and access multimedia content stored on the LAN, including video, images, and music. In some embodiments, the local area network 630 for carrying video data can be replaced with the Internet and with appropriate security guidance.

Controller 624 is coupled to the extended display identification data (electrically erasable programmable read only memory) 622 and is coupled to both sides of magnetic element 618. Controller 624 is also coupled to serial port 626. Controller 624 can be a digital signal processor, a processor, a microprocessor or a single-chip microcomputer. The controller 624 receives a display 660 from the area network 630 to expand the display identification data, and stores the extended display identification data as a simulated extended display identification data in the memory 622 of the graphic card 610 (eg, an erasable programmable program) In the read-only memory). A personal computer connected to the display interface 612 or the high definition multimedia interface 615 reads the simulated extended display identification data in the memory 622 of the graphics card 610 as if it were read from the display 660. In some embodiments, the extended display identification data 622 of the graphics card 610 for storing the simulated extended display identification data is initialized with a predetermined extended display identification data during manufacture. In some embodiments, a jumper or a switch can be used to reset the simulated extended display identification data for ease of resetting.

The controller 624 is configured to receive the extended display identification data of the six channels, and store the extended display identification data in an electrically erasable programmable read only memory array. In this embodiment, a plurality of control signals from the controller 624 and one of the video data from the audio/video transmitter 616 are superimposed on the input of the magnetic transformer 618 and then sent to the display. Adapter 640.

The display adapter 640 includes an RJ45 connector 642, a magnetic transformer 644, an audio/video receiver 646 and a controller 648. Magnetic transformer 644 is designed and manufactured to comply with appropriate standards, such as the HDBaseT standard. The audio/video receiver 646 receives the video material from the audio/video transmitter 616 using the RJ45 connector 642 and the regional network 630. Prior art examples of audio/video transmitters and audio/video receivers are: Valens chipsets using the HDBaseT standard and Aptovision BlueRiver chipsets using IP-based standard systems. Those of ordinary skill in the art will appreciate upon reading the present invention that other chipsets having other standards can also be used as the audio/video receiver 646.

Display 660 is coupled to display adapter 640 via a high definition multimedia interface. Even if the display 160 is turned off, a memory 662 (e.g., electrically erasable programmable read only memory) for storing a display identification data for the display is also powered by a high definition multimedia interface. The controller 648 of the display adapter 640 can read and store the extended display identification data of the display 660. Controller 648 can be a digital signal processor, a processor, a microprocessor or a single-chip microcomputer. The controller 648 of the display adapter 640 communicates with the controller 624 of the graphics card 610 to facilitate the transfer of the display identification information between the display 662 and the graphics card 610. In an alternate embodiment, the display's extended display identification data is read directly by the graphics card without the need for a controller 648.

The operation of the system is briefly described below. In summary, the graphics card 610 operates in conjunction with the adapter 640 to retrieve the extended display identification information from the display 660, store the extended display identification information in the electrically erasable programmable read-only memory 622, and Use this simulation to expand the display identification information during the operation of the display. The simulated extended display identification information in the programmable erasable memory 622 can be erased, so that the display 660 is not Machine resolution is removed. In addition, after first turning on the power of the system including the graphics card 610, even if no display is connected to the system, the virtual extended display identification information can be stored in the simulated extended display identification data can be erased. Stylized read-only memory 622. After a hot plug detection (HPD) high signal is generated, the actual display information is obtained, and the information is replaced by the dummy display display identification information in the programmable read only memory 622. If the display 660 is disconnected from the graphics card 610, the system continues to operate as if the display 660 were connected, since the system uses the emulated programmable display identification data in the electrically erasable programmable read only memory 622. Information, rather than using the actual extended display identification information in a display.

The foregoing has outlined a number of features of the several embodiments, such that those of ordinary skill in the art can better understand the invention. Those skilled in the art will appreciate that the present invention may be readily utilized as a basis for designing or modifying other processes and structures to achieve the same objectives and/or achieve the same as the embodiments described herein. The advantages. It is to be understood by those of ordinary skill in the art that the present invention is not to be construed as limited to the scope of the invention.

100‧‧‧Display system

110‧‧‧graphic card

111‧‧‧ Peripheral Component Interconnect Quick Interface

112‧‧‧Action peripheral component interconnect quick module

114‧‧‧DP-HDMI converter

116‧‧‧HDBT transmitter

118‧‧‧Magnetic transformer

120‧‧‧RJ45 connector

122‧‧‧Electrically erasable programmable read-only memory

124‧‧‧ Controller

130‧‧‧Regional Network

140‧‧‧Display Adapter

142‧‧‧RJ45 connector

144‧‧‧Magnetic transformer

146‧‧‧HDBT Receiver

148‧‧‧ Controller

149‧‧‧ memory

160‧‧‧ display

162‧‧‧ display

Claims (22)

A display system for connecting a computer to a display having an extended display identification data (EDID) information, comprising: a graphics card communicating with the computer, comprising: a graphics card controller; a memory coupled to the graphics card; and an adapter having an adapter controller coupled to the display and coupled to the graphics card, wherein the graphics card controller is configured to query from the display Expanding the display identification information and storing the extended display identification information as a simulated extended display identification information in the memory, and further wherein the graphics processor reads the simulation extension from the memory instead of from the display The display identifies the information. The display system of claim 1 further comprising a graphics processor coupled to the graphics card controller and the memory. The display system of claim 2, wherein the graphics card further comprises a display port to a high definition multimedia interface converter, the display side of the converter being coupled to the graphics processor and the converter is high The sharpness multimedia interface side is coupled to the memory. The display system of claim 3, wherein the graphics card further comprises an audio/video transmitter, the transmitter having an input coupled to the high definition multimedia interface side of the converter. The display system of claim 4, wherein the graphics card further comprises a magnetic component, the primary side of the magnetic component being coupled to the output of the audio/video transmitter and coupled to the controller. The display system of claim 5, wherein the graphics card further comprises an RJ45 connector, the secondary side of the magnetic element being coupled to the RJ45 connector and coupled to the controller. The display system of claim 2, wherein the adapter further comprises: an RJ45 connector; and a magnetic component, the primary side of the magnetic component being coupled to the RJ45 connector, wherein the adapter controller is coupled to The secondary side of the magnetic element. The display system of claim 7, wherein the adapter further comprises an audio/video receiver coupled to one of the displays to expand the display identification data memory and coupled to the magnetic element Secondary side. The display system of claim 2, wherein the graphics card is coupled to the computer via a peripheral component PCI Express connection. The display system of claim 2, wherein the graphics card further comprises a communication interface, the communication interface being coupled to the graphics card controller. The display system of claim 10, wherein the communication interface is a serial port. A method comprising: reading an extended display identification data information from a display; storing the extended display identification data information as a simulated extended display identification data information in a memory; and reading from the memory by a graphics processor The stored extended display identification information is stored. The method of claim 12, further comprising: storing a default extended display identification information as the simulated extended display identification information in the memory before reading the extended display identification information from a display; In the body. The method of claim 12, further comprising: determining a native resolution of the display based on the expanded display identification data information and determining the native resolution of the display based on the expanded display identification information; The simulated extended display identification data information in the body is rewritten to remove the simulated extended display identification data information from which the non-native resolution is removed. The method of claim 14, further comprising: after reading the extended display identification information, reading the simulated extended display identification information in the memory; and marking the expanded display identification information information ( The header is compared with a header of the simulated extended display identification data; and if the header of the extended display identification information is different from the header of the simulated extended display identification information, only the extended display is identified The data information is used as a step of simulating the display identification information stored in the memory. The method of claim 12, further comprising: determining whether a Nativization function is actived, and if the localization function is enabled, performing only the function as recited in claim 12 . A method for improving picture quality of a video wall comprising a plurality of displays, comprising: determining a native resolution of each of n×m displays; and adding the native resolution of the n×m displays to a total video resolution x×y; capturing a video file having a resolution of a×b, where a is not equal to x, and/or b is not equal to y; and the a×b resolution of the video file is resized To become a second video file of size x x y; The second video file is displayed on the n×m displays. The method of claim 17, wherein determining the native resolution comprises: querying each of the n×m displays to extract extended display identification data information from the n×m displays; from each of the n×m displays Extracting the identification information of the extended display captured by each of the n×m displays; extracting a header information from the extended display identification information of each of the n×m displays; and querying the data by using the extended display identification information a library to capture the local resolution of each of the n×m displays. A free n×m display forms a method for displaying information by a display wall, comprising: connecting a communication port to a graphic card installed in a host computer, the graphic card comprising a controller and a graphic processing unit; Sending a query to a communication interface with the controller; transmitting the query from the controller to at least one of the n×m displays; receiving a response to the query at the controller; and via the communication The interface will send the response to the query from the controller to the host computer. The method of claim 19, wherein the query is a request to obtain an extended display identification information from the display. The method of claim 20, wherein the extended display identification information is stored in a database in the host computer. The method of claim 21, wherein the query is sent to each of the n×m displays and the extended display identification information of each of the n×m displays is stored in the database by the host computer.