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a b "CEA Announces Publication of New DTV Interface Standard". Business Wire. July 15, 2013 . Retrieved July 17, 2013. Today, there are three different kinds of HDMI cords: Standard, High Speed, and Ultra High Speed. Each of these HDMI types also has its own subcategory of HDMI variants ranging from Type A to Type E. Take control of your TV with your HTPC via HDMI-CEC". Engadget. August 25, 2011 . Retrieved November 20, 2011.
One way to avoid these artifacts is to use three chips, as with the three-LCD chip design that's standard for most LCD projectors. The three chips put all three primaries on screen at once, and let your brain integrate the colors over space rather than sequentially over time. But three-chip designs are expensive, and tend to add weight. Another alternative, which these lightweight single-LCD models offer, is to use a single large LCD with enough individual cells to deliver the resolution you need. Cover the cells in a 5,760-by-1,080-pixel matrix with red, green, and blue filters, so each set of red, green, and blue gives you a single pixel, and the image resolution works out to 1,920 (5,760 divided by 3) by 1,080 pixels. This single-LCD approach won't usually give you the same level of contrast that a DLP chip would, but it's guaranteed not to bother you with rainbow artifacts, potentially making for better image quality. Beginning with the seventh generation of video game consoles, most consoles support HDMI. Video game consoles that support HDMI include the Xbox 360 (1.2a), Xbox One (1.4b), Xbox One S (2.0a), Xbox One X (2.0b), PlayStation 3 (1.3a), PlayStation 4 (1.4b), PlayStation 4 Pro (2.0a), Wii U (1.4a), Nintendo Switch (1.4b), Nintendo Switch (OLED model) (2.0a), Xbox Series X and Series S (2.1), and PlayStation 5 (2.1). After that, there was no new HDMI type until 2009 with the release of HDMI Version 1.4. This long-awaited update brought forth the micro HDMI along with improved specifications for higher resolutions and even 3D video. It was, without a doubt, the biggest update to the HDMI cord technology since its 2002 debut. HDMI Version 1.4a and HDMI Version 1.4b, released in March of 2010 and October of 2011, only underlined this importance. It’s interesting to note that the short-lived legacy of the micro HDMI doesn’t line up with the huge legacy of this otherwise major update. Micro HDMI vs. Mini HDMI: Pros and Cons Pros of Micro HDMI a b c d "HDMI Founders announce initiative to broaden industry participation in HDMI specification development". HDMI.org. October 25, 2011. Archived from the original on April 13, 2016 . Retrieved October 29, 2011.
Where the two categories differ is in their shape and in some key features that make the best mini projectors a better fit for home entertainment. Although no particular shape defines a mainstream mini projector, most are towers, like models in the Anker Nebula Capsule series. The extra height makes room for relatively robust audio systems, which deliver higher volume and better sound quality in almost every case than any oversize palmtop. Most couple that with built-in smart TV features for streaming—most often by way of Android TV. None of this hurts their usability for business presentations, and some types of presentations can benefit from the better audio. But the extras also mean these models will do a better job than most oversize palmtops for watching movies. Many can also double as Bluetooth speakers. Inexpensive Single-LCD Mini Projectors
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 devices are manufactured to adhere to various versions of the specification, in which each version is given a number or letter, such as 1.0, 1.2, or 1.4b. [5] :p. III Each subsequent version of the specification uses the same kind of cable but increases the bandwidth or capabilities of what can be transmitted over the cable. [5] :p. III A product listed as having an HDMI version does not necessarily mean that it has all features in that version, [90] since some HDMI features are optional, such as deep color and xvYCC (which is branded by Sony as "x.v.Color"). [91] [92] Since the release of HDMI 1.4, the HDMI Licensing Administrator, Inc. (which oversees the HDMI standard) has banned the use of version numbers to identify cables. [93] Non-cable HDMI products, starting on January 1, 2012, may no longer reference the HDMI number, and must state which features of the HDMI specification the product implements. [94] Version 1.0 [ edit ] Trademark and Logo Guidelines In Effect 10/17/2008". HDMI.org. October 1, 2008. Archived from the original on July 15, 2010 . Retrieved November 17, 2009. 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 ]Devices called HDCP strippers can remove the HDCP information from the video signal so the video can play on non-HDCP-compliant displays, [61] though a fair use and non-disclosure form must usually be signed with a registering agency before use. Blu-ray Disc and HD DVD, introduced in 2006, offer high-fidelity audio features that require HDMI for best results. HDMI 1.3 can transport Dolby Digital Plus, Dolby TrueHD, and DTS-HD Master Audio bitstreams in compressed form. [5] :§7 This capability allows for an AV receiver with the necessary decoder to decode the compressed audio stream. The Blu-ray specification does not include video encoded with either deep color or xvYCC; thus, HDMI 1.0 can transfer Blu-ray discs at full video quality. [153] In December 2010, it was announced that several computer vendors and display makers including Intel, AMD, Dell, Lenovo, Samsung, and LG would stop using LVDS (actually, FPD-Link) from 2013 and legacy DVI and VGA connectors from 2015, replacing them with DisplayPort and HDMI. [180] [181]
Several versions of HDMI have been developed and deployed since the initial release of the technology, occasionally introducing new connectors with smaller form factors, but all versions still use the same basic pinout and are compatible with all connector types and cables. Other than improved audio and video capacity, performance, resolution and color spaces, newer versions have optional advanced features such as 3D, Ethernet data connection, and CEC extensions. The Display Data Channel (DDC) is a communication channel based on the I 2C bus specification. HDMI specifically requires the device implement the Enhanced Display Data Channel (E-DDC), which is used by the HDMI source device to read the E-EDID data from the HDMI sink device to learn what audio/video formats it can take. [5] :§§8.1,CEC-1.2–CEC-1.3 HDMI requires that the E-DDC implement I 2C standard mode speed (100 kbit/s) and allows it to optionally implement fast mode speed (400kbit/s). [5] :§4.2.8 Standards Details– CEA-861-E". Consumer Electronics Association. March 1, 2008. Archived from the original on November 7, 2011 . Retrieved November 20, 2011.Audio return channel: Audio return channel (HDMI-ARC) provides a single HDMI connection between a TV and a home theater receiver. It passes audio/video signals from the receiver to the TV and also passes audio originating from the TV's tuner to the receiver. In other words, when listening to audio accessed by the TV's tuner, you don't need a separate audio connection going from the TV to the home theater receiver. Passive HDMI Cable: Most HDMI cables are passive. That means one end goes into a source and the other goes to a home theater receiver or video display, and the signal is transferred. The cable is also bi-directional, meaning you can connect either end to an HDMI input or output connection. Passive HDMI cables should be able to provide a stable signal for lengths of up 15 feet.
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