The Mini DisplayPort connector was developed by Apple for use in their computer products. In , VESA adopted it as an official standard, and in the specification was merged into the main DisplayPort standard with the release of DisplayPort 1. Apple freely licenses the specification to VESA. Unlike the full-size connector, it does not have an option for a mechanical latch.
The mDP receptacle has dimensions of 7. Recently VESA has experienced quite a few complaints regarding troublesome DisplayPort operation that ended up being caused by improperly made DisplayPort cables. These "bad" DisplayPort cables are generally limited to non-DisplayPort certified cables, or off-brand cables.
To further investigate this trend in the DisplayPort cable market, VESA purchased a number of non-certified, off-brand cables and found that an alarmingly high number of these were configured improperly and would likely not support all system configurations. None of these cables would have passed the DisplayPort certification test, moreover some of these cables could potentially damage a PC, laptop, or monitor. However, DisplayPort products and cables did not begin to appear on the market until , long after version 1.
The tables below describe the refresh frequencies that can be achieved with each transmission mode. These transmission modes were introduced to the DisplayPort standard as follows:. However, transmission mode support is not necessarily dictated by a device's claimed "DisplayPort version number".
In addition, individual devices may have their own arbitrary limitations beyond transmission speed. To support a particular format, the source and display devices must both support the required transmission mode, and the DisplayPort cable must also be capable of handling the required bandwidth of that transmission mode. See: Cables and connectors.
This is the standard color depth used on most computer displays. Note that some operating systems refer to this as "bit" color depth—this is the same as bit color depth. The 8 extra bits are for alpha channel information, which is only present in software. At the transmission stage, this information has already been incorporated into the primary color channels, so the actual video data transmitted across the cable only contains 24 bits per pixel. HDR extensions were defined in version 1.
Since there is no definition of what constitutes a "DisplayPort 1. The original DisplayPort Dual-Mode standard version 1. This is equivalent to HDMI 1. Older adapters, which were only capable of the MHz speed, were retroactively termed "Type 1" adapters, with the new MHz adapters being called "Type 2". Multi-Stream Transport is a feature first introduced in the DisplayPort 1. It allows multiple independent displays to be driven from a single DP port on the source devices by multiplexing several video streams into a single stream and sending it to a branch device , which demultiplexes the signal into the original streams.
Branch devices are commonly found in the form of an MST hub, which plugs into a single DP input port and provides multiple outputs, but it can also be implemented on a display internally to provide a DP output port for daisy-chaining, effectively embedding a 2-port MST hub inside the display. In addition, the maximum number of links between the source and any device i. Daisy-chaining is a feature that must be specifically supported by each intermediary display; not all DisplayPort 1.
Daisy-chaining requires a dedicated DisplayPort output port on the display. Standard DisplayPort input ports found on most displays cannot be used as a daisy-chain output. Only the last display in the daisy-chain does not need to support the feature specifically or have a DP output port. The host system's software also needs to support MST for hubs or daisy-chains to work. It implements the CTA It also features full authentication and session key establishment.
Each encryption session is independent, and it has 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.
VESA, the creators of the DisplayPort standard, state that the standard is royalty-free to implement. Although DisplayPort has much of the same functionality as HDMI , it is a complementary connection used in different scenarios. Figures from IDC show that 5. Shortly after announcing Mini DisplayPort, Apple announced that it would license the connector technology with no fee.
Micro DisplayPort would have targeted systems that need ultra-compact connectors, such as phones, tablets and ultra-portable notebook computers. This standard would have been physically smaller than the currently available Mini DisplayPort connectors. The standard was expected to be released by Q2 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 is a VESA -developed video compression algorithm designed to enable increased display resolutions over existing physical interfaces, and make devices smaller and lighter, with longer battery life.
DSC compression works on a horizontal line of pixels encoded using groups of three consecutive pixels for native and simple formats, or six pixels three compressed containers for native and formats. Simple conversion from to can add missing chroma samples by interpolating neighboring pixels.
Each luma component is coded separately using three independent substreams four substreams in native mode. Prediction step is performed using one of the three modes: modified median adaptive coding MMAP algorithm similar to the one used by JPEG-LS , block prediction optional for decoders due to high computational complexity, negotiated at DSC handshake , and midpoint prediction. Bit rate control algorithm tracks color flatness and buffer fullness to adjust the quantization bit depth for a pixel group in a way that minimizes compression artifacts while staying within the bitrate limits.
Repeating recent pixels can be stored in entry Indexed Color History ICH buffer, which can be referenced directly by each group in a slice; this improves compression quality of computer-generated images. Alternatively, prediction residuals are computed and encoded with entropy coding algorithm based on delta size unit-variable length coding DSU-VLC. DSC version 1. Embedded DisplayPort eDP is a display panel interface standard for portable and embedded devices. It defines the signaling interface between graphics cards and integrated displays.
The various revisions of eDP are based on existing DisplayPort standards. However, version numbers between the two standards are not interchangeable. For instance, eDP version 1. Version 1. Internal DisplayPort iDP 1.
The iDP standard defines an internal link between a digital TV system on a chip controller and the display panel's timing controller. 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. 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. 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.
VirtualLink is a proposal that allows the power, video, and data required to drive virtual reality headsets to be delivered over a single USB-C cable. Since its introduction in , DisplayPort has gained popularity within the computer industry and is featured on many graphic cards, displays, and notebook computers.
Later the same year, Apple introduced several products featuring a Mini DisplayPort. Currently, DisplayPort is the most widely implemented alternate mode, and is used to provide video output on devices that do not have standard-size DisplayPort or HDMI ports, such as smartphones, tablets, and laptops. From Wikipedia, the free encyclopedia. Digital display interface. Some of the transmitted bits are used for encoding purposes, so the rate at which video data can be transmitted across the DisplayPort interface is only a portion of the total bandwidth.
The extra 2 bits are used for DC balancing ensuring a roughly equal number of 1s and 0s. They consume bandwidth, but do not represent any data. DisplayPort versions 1. DisplayPort version 2. Pixels per frame includes blanking intervals as defined by CVT-R2.
This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Main article: High-dynamic-range video.
This article contains embedded lists that may be poorly defined, unverified or indiscriminate. Please help to clean it up to meet Wikipedia's quality standards. Where appropriate, incorporate items into the main body of the article. November Main article: Mini DisplayPort. Main article: DisplayID. Main article: DockPort. Main article: USB-C. Main article: VirtualLink. Palit Microsystems Ltd. HDMI 1. 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 23 January Tom's Hardware. Retrieved 28 July Hope Industrial Systems. Retrieved 9 March Archived from the original on 14 February Archived from the original on 16 October Retrieved 21 July Archived from the original PDF on 8 April Luxtera Inc. Archived from the original on 18 February Retrieved 19 January Retrieved 2 May Archived from the original on 2 May Archived from the original on 27 December Cornwall 15 January Retrieved 10 May Retrieved 27 January Archived from the original on 12 August 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.
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