1. 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.[2]
The VESA specification is royalty-free. VESA designed it to replace VGA, DVI, and FPD-Link. Backward compatibility to VGA and DVI by using active adapters, enables users to use DisplayPort fitted video sources without replacing existing display devices.
The first version, 1.0, was approved by VESA on May 3, 2006.[3] Version 1.1a was approved on April 2, 2007[4] followed by the current standard 1.2 on December 22, 2009.[5]
2. Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect a video source to a display device, such as a computer monitor. It was developed with the intention of creating an industry standard for the transfer of digital video content.
The interface is designed to transmit uncompressed digital video and can be configured to support multiple modes such as DVI-D (digital only), DVI-A (analog only), or DVI-I (digital and analog). Featuring support for analog connections, the DVI specification is compatible with the VGA interface.[1] This compatibility, along with other advantages, led to its widespread acceptance over competing digital display standards Plug and Display (P&D) and Digital Flat Panel(DFP).[2] Although DVI is predominantly associated with computers, it is sometimes used in other consumer electronics such as television sets, video game consoles and DVD players.
3. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device.[1] HDMI is a digital replacement for existing analog video standards.
There are many types of HDMI-standard cable connector, each of which can be used for any uncompressed TV or PC video format, including standard, enhanced, high definition, and 3D video signals; up to 8 channels of compressed or uncompressed digital audio; a CEC (Consumer Electronics Control) connection; and an Ethernet data connection. HDMI implements the EIA/CEA-861 standards, which define video formats and waveforms, transport of compressed, uncompressed, and LPCM audio, auxiliary data, and implementations of the VESA EDID.[2][3]
The CEC allows HDMI devices to control each other when necessary and allows the user to operate multiple devices with one remote control handset.[4] Because HDMI is electrically compatible with the CEA-861 signals used bydigital visual interface (DVI), no signal conversion is necessary, nor is there a loss of video quality when a DVI-to-HDMI adapter is used.[5] As an uncompressed CEA-861 connection, HDMI is independent of the various digital television standards used by individual devices, such as ATSC and DVB, as these are encapsulations of compressed MPEG video streams (which can be decoded and output as an uncompressed video stream on HDMI). Production of consumer HDMI products started in late 2003.[6] In Europe either DVI-HDCP or HDMI is included in the HD ready in-store labeling specification for TV sets for HDTV, formulated by EICTA with SES Astra in 2005. HDMI began to appear on consumer HDTV camcorders and digital still cameras in 2006.[7][8][9][10][11] As of January 8, 2013 (ten years after the release of the first HDMI specification), over 3 billion HDMI devices have been sold.[12][13][14]
