Стандарт DisplayPort 1.4 принят официально
DisplayPort
VESA finalizes DisplayPort 1.4, adds 8K support, data compression, and USB-C
DisplayPort is a digital display interface developed by the Video Electronics Standards Association VESA. The interface is primarily used to connect a video source to a display device such as a computer monitor , though it can also be used to carry audio , USB , and other forms of data. VESA designed it to replace VGA , DVI , and FPD-Link. DisplayPort is backwards compatible with VGA, DVI and HDMI through the use of passive and active adapters. DisplayPort is the first display interface to rely on packetized data transmission , a form of digital communication found in technologies including Ethernet , USB, and PCI Express. It allows both internal and external display connections and, unlike legacy standards where differential pairs are fixed to transmitting a clock signal with each output, the DisplayPort protocol is based on small data packets known as micro packets , which can embed the clock signal within the data stream, allowing higher resolutions with fewer pins. DisplayPort can be used to transmit audio and video simultaneously, but each one is optional and can be transmitted without the other. In addition, the interface is capable of carrying bi-directional USB signals. The DisplayPort LVDS signal protocol is not compatible with DVI or HDMI. However, dual-mode DisplayPorts are designed to transmit a single-link DVI or HDMI 1. Analog VGA and dual-link DVI require powered active adapters to convert the protocol and signal levels and do not rely on dual mode. VGA adapters are powered by the DisplayPort connector, while dual-link DVI adapters may rely on an external power source see Dual-mode. The DisplayPort connector can have one, two, or four differential data pairs lanes in a Main Link, each with a raw bit rate of 1. The effective data rates after decoding are 1. The first version, 1. It also includes HDCP in addition to DisplayPort Content Protection DPCP. The most significant improvement of the new version is the doubling of the effective bandwidth to FreeSync was first demonstrated at CES on a Toshiba Satellite laptop by making use of the Panel-Self-Refresh PSR feature from the Embedded DisplayPort standard, [16] and after a proposal from AMD, VESA later adapted the Panel-Self-Refresh feature for use in standalone displays and added it as an optional feature of the main DisplayPort standard under the name "Adaptive-Sync" in version 1. The new standard includes mandatory Dual-mode for DVI and HDMI adapters, implementing the HDMI 2. DSC is a "visually lossless" encoding technique with up to 3: On displays which do not support DSC, the maximum limits are unchanged from DisplayPort 1. According to a roadmap published by VESA in September , a new version of DisplayPort should be launched in It improves the link rate from 8. For 30, 36, 48 bpp 10, 12, 16 bpc , multiply 24 bit data rate by 1. It also features full authentication and session key establishment each encryption session is independent. There is an independent revocation system. This portion of the standard is licensed separately. It also adds the ability to verify the proximity of the receiver and transmitter, a technique intended to ensure users are not bypassing the content protection system to send data out to distant, unauthorized users. In January , a new VESA specification was released called DisplayPort Dual-Mode Standard version 1. Passive adapters and ports which support the new data rate will be marked "Type 2" and will be backwards compatible with existing "Type 1" ports. In September , DisplayPort 1. A notable limitation of dual-mode is that it can only transmit single-link DVI and HDMI , as the number of pins in the DisplayPort connector is insufficient for dual-link connections. As a result, an active converter is needed for Dual-Link DVI and analog component video such as VGA. VESA anticipates that HDMI and DVI conversion will eventually be handled by active adapters which act as DisplayPort Sink devices, in order to facilitate easier updates to latest HDMI and DisplayPort specs, and work with dual-link HDMI, DisplayPort connections with either fewer than 4 lanes or different data rates, and multiple DisplayPort streams. It should be noted that DVI 1. This function requires either monitors that are capable of DisplayPort 1. The first MST hub became available in September , enabling up to 3 displays to be connected to a single DisplayPort connector. Single Stream Transport SST was specified in DisplayPort 1. VESA, which created the DisplayPort standard, states the standard is royalty free to implement. However, VESA also acknowledges that " MPEG LA is making claims that DisplayPort implementation requires a license and a royalty payment. It is important to note that these are only claims. Whether these claims are relevant will likely be decided in a US court. While the standard may be free to implement, VESA requires membership for access to said standards. In December , several computer vendors and display makers including Intel, AMD, Dell, Lenovo, Samsung and LG announced they would begin phasing out FPD-Link, VGA, and DVI-I over the next few years, replacing them with DisplayPort and HDMI. DisplayPort has several advantages over VGA, DVI, and FPD-Link. Although DisplayPort has much of the same functionality as HDMI , it is a complementary connection used in different scenarios. DisplayPort also has the ability to share this bandwidth with multiple streams of audio and video to separate devices. DisplayPort in native mode lacks some HDMI features such as Consumer Electronics Control CEC commands, which allow the control of multiple devices through a single remote; [51] [10] VESA asserts that CEC commands can be transmitted over the AUX channel if needed. However, these features can be defined by CEA EDID extensions. Figures from IDC show that 5. However, they predicted that the figure for commercial desktops would grow to Mini DisplayPort mDP is a standard announced by Apple in the fourth quarter of Shortly after announcing Mini DisplayPort, Apple announced that it would license the connector technology with no fee. The following year, in early , VESA announced that Mini DisplayPort would be included in the upcoming DisplayPort 1. On 24 February , Apple and Intel announced Thunderbolt , a successor to Mini DisplayPort which adds support for PCI Express data connections while maintaining backwards compatibility with Mini DisplayPort based peripherals. Micro DisplayPort will target systems that need ultra-compact connectors, such as phones, tablets and ultra-portable notebook computers. This new standard will be physically smaller than the currently available mini DisplayPort connectors. The standard was expected to be released by Q2 Direct Drive Monitor DDM 1. It allows for controller-less monitors where the display panel is directly driven by the DisplayPort signal, although the available resolutions and color depth are limited to two-lane operation. Display Stream Compression DSC uses a visually lossless low-latency algorithm based on predictive DPCM and YCoCg-R color space; it allows increased resolutions and color depths and reduced power consumption. The updated standard includes up to 3: On January 4, , HDMI 2. Embedded DisplayPort eDP 1. It aims to define a standardized display panel interface for internal connections; e. Internal DisplayPort iDP 1. It aims to replace currently used internal FPD-Link lanes with DisplayPort connection. Wireless DisplayPort wDP enables DisplayPort 1. SlimPort implements the transmission of video up to 4K-UltraHD and up to eight channels of audio over the micro-USB connector to an external converter accessory or display device. SlimPort products support seamless connectivity to DisplayPort, HDMI and VGA displays. SlimPort is an alternative to Mobile High-Definition Link MHL. DisplayID is designed to replace the E-EDID standard. DisplayID features variable-length structures which encompass all existing EDID extensions as well as new extensions for 3D displays and embedded displays. The latest version 1. DockPort , formerly known as Lightning Bolt , is an extension to DisplayPort to include USB 3. Originally developed by AMD and Texas Instruments, it has been announced as a VESA specification in On 22 September , VESA published the DisplayPort Alternate Mode on USB Type-C Connector Standard , a specification on how to send DisplayPort signals over the newly released USB Type-C connector. One, two or all four of the differential pairs that USB uses for the SuperSpeed bus can be configured dynamically to be used for DisplayPort lanes. In the first two cases, the connector still can carry a full SuperSpeed signal; in the latter case, at least a non-SuperSpeed signal is available. The DisplayPort AUX channel is also supported over the two sideband signals over the same connection; furthermore, USB Power Delivery according to the newly expanded USB-PD 2. This makes the Type-C connector a strict superset of the use-cases envisioned for DockPort, SlimPort, Mini and Micro DisplayPort. Since its introduction in , DisplayPort has gained popularity within the computer industry and is featured on many graphic cards, displays, and notebook computers. Dell was the first company to introduce a consumer product with a DisplayPort connector, the Dell UltraSharp WFP, which was released in January AMD included support in the Radeon HD series of graphics cards, while Nvidia first introduced support in the GeForce 9 series starting with the GeForce GT. Later the same year, Apple introduced several products featuring a Mini DisplayPort. Nvidia launched NVS with 8 Mini DisplayPort outputs on a single card on 4 November The following devices have USB Type-C ports that implement the DisplayPort Alternate Mode on USB Type-C Connector Standard specification, and are capable of providing a video output to DisplayPort, HDMI and VGA. The following companies have participated in preparing the drafts of DisplayPort, eDP, iDP, DDM or DSC standards:. The following companies have additionally announced their intention to implement DisplayPort, eDP or iDP:. From Wikipedia, the free encyclopedia. RGB and YCbCr 4: Comparison of display connectors. This list is incomplete ; you can help by expanding it. Agilent Altera AMD Graphics Product Group Analogix [90] Apple Astrodesign BenQ Broadcom Corporation Chi Mei Optoelectronics Chrontel [91] Dell Display Labs Foxconn Electronics FuturePlus Systems Genesis Microchip [92] Gigabyte Technology Hardent Hewlett-Packard Hosiden Hirose Electric Group Intel intoPIX I-PEX Integrated Device Technology JAE Electronics Kawasaki Microelectronics K-Micro Lenovo LG Display Luxtera Molex NEC NVIDIA NXP Semiconductors Xi3 Corporation Parade Technologies Realtek Semiconductor Samsung [93] SMK STMicroelectronics SyntheSys Research Inc. Tektronix Texas Instruments TLi Tyco Electronics ViewSonic VTM. Acer ASRock [94] Biostar Chroma BlackBerry Circuit Assembly DataPro [95] Eizo Fujitsu Hall Research Technologies ITE Tech. Matrox Graphics Micro-Star International [96] MStar Semiconductor Novatek Microelectronics Corp. Pioneer Corporation S3 Graphics Toshiba Philips Quantum Data Sparkle Computer Unigraf Xitrix. MHz , and can only drive one monitor at a time. VGA connectors have no defined maximum resolution or speed, but their analog nature limits their bandwidth, though can provide long cabling only limited by appropriate shielding. Retrieved 10 July Retrieved 23 January Retrieved 28 July Retrieved 9 March Archived from the original on 14 February The new video interconnect standard". Retrieved 21 July Video Electronics Standards Association. January 11, — via Microprocessor. Archived from the original on 18 February Retrieved 19 January Archived from the original on 27 December Retrieved 27 January Retrieved 7 January Retrieved 15 September DisplayPort Active-Sync remains an optional part of the specification, so Adaptive-Sync availability will continue to be on a monitor-by-monitor basis as a premium feature. Retrieved 2 March Retrieved 29 January Retrieved 4 November Retrieved 22 August Retrieved 2 July Retrieved 10 November Archived from the original on 14 August Retrieved 27 July Retrieved 23 November Retrieved 5 March Retrieved 7 March Retrieved 23 June Retrieved 29 November Retrieved April 1, The Fastest Data Connection to Your PC Just Arrived" Press release. Retrieved 24 February Retrieved 28 October Archived from the original PDF on 26 July Retrieved 11 March Retrieved 31 December Retrieved 24 December Is Your PC Ready For A 4K Display? Retrieved 26 December Retrieved 12 January Retrieved 14 October Retrieved 25 June Retrieved 2 April Retrieved 4 December Archived from the original on 27 September Retrieved 23 September Massive Digital Signage Displays Powered by Diminutive Graphics Card". The Official NVIDIA Blog. Archived from the original on 24 June Retrieved 10 August Retrieved 16 July Retrieved 25 July Archived from the original on 15 January Archived from the original on 19 December Audio and video connectors. Banana plug Binding post D-subminiature Euroblock DIN Mini-DIN Jack plug RCA Speaker spring terminal Speakon XLR. BNC Component RGB Component YPbPr Composite video D-Terminal DB13W3 DFP DIN Mini-DIN DMS LFH DVI Mini-DVI Micro-DVI RCA S-Video VGA Mini-VGA. List of video connectors. Audio and video interfaces and connectors. PC System Design Guide Connectors: RCA jack coaxial TOSLINK optical BNC Interface: RCA jack XLR TOSLINK optical BNC. RCA jack yellow Interface: Mini-DIN 4 Pin Interface: Composite S-Video , and Component Connectors: VIVO using Mini-DIN 9 Pin. Retrieved from " https: Digital display connectors VESA Computer connectors. 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Microsoft Lumia also works with Microsoft Display Dock. Microsoft Lumia XL also works with Microsoft Display Dock. HP Elite x3 also works with Desk Dock or Lap Dock.
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