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a b c "HDMI 1.3 doubles bandwidth, delivers billions of colors for HDTVs". hdmi.org. HDMI Licensing, LLC. June 22, 2006. Archived from the original on February 22, 2008 . Retrieved June 19, 2008. The royalty fee structure is the same for all volumes. The following variable per-unit royalty is device-based and not dependent on number of ports, chips or connectors: High-Definition Multimedia Interface ( HDMI) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device, such as a display controller, to a compatible computer monitor, video projector, digital television, or digital audio device. [3] HDMI is a digital replacement for analog video standards. HDMI cables are the preferred choice for the connection of consumer digital entertainment systems due to the associated audio-visual quality. There are four main types of HDMI cables, excluding those which are designed for automotive purposes. These are the standard, standard with ethernet, high speed, and high speed with ethernet. The type of cable must be displayed. High Definition Multimedia Interface Audio Return Channel (HDMI ARC), enables the upstream and downstream of HDMI signals via a single connection between the TV and any AV devices featuring ARC. This means that a single remote control can be used across a range of connected devices for the operation of common digital functions. HDMI ARC is supported across a complete range of televisions, soundbars, and receivers. Nowadays, Enhanced Audio Return Channel (eARC) is also available, providing the next generation of ARC technology. It offers higher quality, speed, and bandwidth. HDMI CEC
Simon Baker (December 13, 2021). "When HDMI 2.1 Isn't HDMI 2.1 - The Confusing World of the Standard, "Fake HDMI 2.1" and Likely Future Abuse". www.tftcentral.co.uk. HDMI implements the ANSI/CTA-861 standard, which defines video formats and waveforms, transport of compressed and uncompressed LPCM audio, auxiliary data, and implementations of the VESA EDID. [4] [5] :p. III CEA-861 signals carried by HDMI are electrically compatible with the CEA-861 signals used by the Digital 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] :§C The Consumer Electronics Control (CEC) capability allows HDMI devices to control each other when necessary and allows the user to operate multiple devices with one handheld remote control device. [5] :§6.3 The fourth version, superMHL, increased bandwidth by operating over multiple TMDS differential pairs (up to a total of six) allowing a maximum of 36 Gbit/s. [225] The six lanes are supported over a reversible 32-pin superMHL connector, while four lanes are supported over USB-C Alternate Mode (only a single lane is supported over micro-USB/HDMI). Display Stream Compression (DSC) is used to allow up to 8K Ultra HD (7680 × 4320) 120Hz HDR video, and to support Ultra HD 60Hz video over a single lane. [225] See also [ edit ] Rodolfo La Maestra (June 25, 2006). "HDMI– A Digital Interface Solution". HDTV Magazine. Archived from the original on May 30, 2016 . Retrieved June 23, 2008. Julie Jacobson (January 17, 2007). "Panasonic Demos Control over HDMI". CEPro . Retrieved December 7, 2008.a b c d e "HDMI FAQ". HDMI.org. Archived from the original on February 22, 2018 . Retrieved July 9, 2007. MPEG LA Introduces License for DisplayPort". Business Wire. March 5, 2015 . Retrieved March 5, 2015. As stated at CES in January 2023, HDMI Alternate Mode for USB Type-C is no longer being updated [198] as there are no known products using this protocol, reducing its relevance in the current market. This will reduce consumer confusion as DisplayPort Alternate Mode is the primary video protocol of choice over USB-C.
HDMI Gaining as DVI Heads for a Slide". instat.com. January 30, 2006. Archived from the original on August 8, 2007 . Retrieved July 2, 2008.a b "CEA Announces Publication of New DTV Interface Standard". Business Wire. July 15, 2013 . Retrieved July 17, 2013. The DisplayPort features an adapter detection mechanism enabling dual-mode operation and the transmission of TMDS signals allowing the conversion to DVI and HDMI 1.2/1.4/2.0 signals using a passive adapter. [214] [203] The same external connector is used for both protocols– when a DVI/HDMI passive adapter is attached, the transmitter circuit switches to TMDS mode. DisplayPort Dual-mode ports and cables/adapters are typically marked with the DisplayPort++ logo. Thunderbolt ports with mDP connector also supports Dual-mode passive HDMI adapters/cables. Conversion to dual-link DVI and component video (VGA/YPbPr) requires active powered adapters. [203] [214] On January 8, 2013, HDMI Licensing, LLC announced that there were over 1,300 HDMI adopters and that over 3 billion HDMI devices had shipped since the launch of the HDMI standard. [36] [37] The day also marked the 10th anniversary of the release of the first HDMI specification. [36] [37] Auto Low Latency Mode (ALLM)– When a display device supports the option to either optimize its pixel processing for best latency or best pixel processing, ALLM allows the current HDMI source device to automatically select, based on its better understanding of the nature of its own content, which mode the user would most likely prefer. HDMI CEC, also commonly referred to as CEC (consumer electronics control), is a method for the remote control of connected devices. You should be aware that this feature is typically switched off on AV devices that are fresh from the box. It is also worth pointing out that devices produced by different brands do not always have CEC connectivity. MHL HDMI Cables
Transformation is Sony's CES theme". Sony. January 7, 2007. Archived from the original on July 17, 2012 . Retrieved June 19, 2008. a b c "HDMI Specification Version 1.2a" (PDF). HDMI Licensing, LLC. Archived from the original (PDF) on August 26, 2017 . Retrieved August 25, 2017. HDMI LICENSING, LLC ANNOUNCES AVAILABILITY OF HDMI 1.2 SPECIFICATION". HDMI.org. HDMI Licensing, LLC. Archived from the original on August 26, 2017 . Retrieved August 25, 2017. a b c Brian O'Rourke (January 28, 2008). "In-Stat Reports DVI on the Decline as HDMI and DisplayPort Grow". Business Wire, Inc . Retrieved July 2, 2008. The maximum limits for TMDS transmission are calculated using standard data rate calculations. [143] For FRL transmission, the limits are calculated using the capacity computation algorithm provided by the HDMI Specification. [144] :§6.5.6.2.1 All calculations assume uncompressed RGB video with CVT-RB v2 timing. Maximum limits may differ if compression (i.e. DSC) or Y′C BC R 4:2:0 chroma subsampling are used.
Support
Video formats that require more bandwidth than 18.0 Gbit/s (4K 60 Hz 8 bpc RGB), such as 4K 60 Hz 10 bpc (HDR), 4K 120 Hz, and 8K 60 Hz, may require the new "Ultra High Speed" or "Ultra High Speed with Ethernet" cables. [82] HDMI 2.1's other new features are supported with existing HDMI cables.
HDMI Compliance Testing Policies and Procedures" (PDF). HDMI.org. Archived from the original (PDF) on September 30, 2009 . Retrieved May 4, 2008. MHz was the maximum TMDS character rate allowed in version 1.2a of the HDMI Specification and earlier. In version 1.3, the maximum allowed speed was increased to 340 MHz, and in version 2.0 it was increased to 600 MHz. These are only the maximum speeds permitted by the specification; individual devices may be limited to any speed within the maximum allowed. HDMI Trademark and Logo Usage" (PDF). www.hdmi.org. HDMI Licensing, LLC. Archived from the original (PDF) on July 4, 2017. Consumer Electronics Control (CEC) is an HDMI feature designed to allow the user to command and control up to 15 CEC-enabled devices, that are connected through HDMI, [44] [45] by using only one of their remote controls (for example by controlling a television set, set-top box, and DVD player using only the remote control of the TV). CEC also allows for individual CEC-enabled devices to command and control each other without user intervention. [5] :§CEC-3.1ATI Radeon HD 4600 Series– GPU Specifications". AMD. Archived from the original on September 18, 2008 . Retrieved October 22, 2008.
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