High-definition television in the context of "Digital television"

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👉 High-definition television in the context of Digital television

Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. In the 2000s it was represented as the first significant evolution in television technology since color television in the 1950s. Modern digital television is transmitted in high-definition television (HDTV) with greater resolution than analog TV. It typically uses a widescreen aspect ratio (commonly 16:9) in contrast to the narrower format (4:3) of analog TV. It makes more economical use of scarce radio spectrum space; it can transmit up to seven channels in the same bandwidth as a single analog channel, and provides many new features that analog television cannot. A transition from analog to digital broadcasting began around 2000. Different digital television broadcasting standards have been adopted in different parts of the world; below are the more widely used standards:

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High-definition television in the context of Projection screen

A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience. Projection screens may be permanently installed on a wall, as in a movie theater, mounted to or placed in a ceiling using a rollable projection surface that retracts into a casing (these can be motorized or manually operated), painted on a wall, or portable with tripod or floor rising models as in a conference room or other non-dedicated viewing space. Another popular type of portable screens are inflatable screens for outdoor movie screening (open-air cinema).

Uniformly white or grey screens are used almost exclusively as to avoid any discoloration to the image, while the most desired brightness of the screen depends on a number of variables, such as the ambient light level and the luminous power of the image source. Flat or curved screens may be used depending on the optics used to project the image and the desired geometrical accuracy of the image production, flat screens being the more common of the two. Screens can be further designed for front or back projection, the more common being front projection systems, which have the image source situated on the same side of the screen as the audience.

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High-definition television in the context of Motorola

Motorola, Inc. (/ˌmoʊtəˈroʊlə/), was an American multinational telecommunications company based in Schaumburg, Illinois. It was founded by brothers Paul and Joseph Galvin in 1928 and had been named Motorola since 1947. Many of Motorola's products had been radio-related communication equipment such as two-way radios, consumer walkie-talkies, cellular infrastructure, mobile phones, satellite communicators, pagers, as well as cable modems and semiconductors. After having lost $4.3 billion from 2007 to 2009, Motorola was split into two independent public companies: Motorola Solutions (its legal successor) and Motorola Mobility (spun off), on January 4, 2011.

Motorola designed and sold wireless network equipment such as cellular transmission base stations and signal amplifiers. Its business and government customers consisted mainly of wireless voice and broadband systems (used to build private networks), and public safety communications systems like Astro and Dimetra. Motorola's home and broadcast network products included set-top boxes, digital video recorders, and network equipment used to enable video broadcasting, computer telephony, and high-definition television. These businesses, except for set-top boxes and cable modems, became part of Motorola Solutions after the split of Motorola in 2011.

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High-definition television in the context of 1080i

In high-definition television (HDTV) and video display technology, 1080i is a video display format with 1080 lines of vertical resolution and interlaced scanning method. This format was once a standard in HDTV. It was particularly used for broadcast television because it can deliver high-resolution images without needing excessive bandwidth. This format is used in the SMPTE 292M standard.

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High-definition television in the context of VGA connector

The Video Graphics Array (VGA) connector is a standard connector used for computer video output. Originating with the 1987 IBM PS/2 and its VGA graphics system, the 15-pin connector went on to become ubiquitous on PCs, as well as many monitors, projectors and HD television sets.

Other connectors have been used to carry VGA-compatible signals, such as mini-VGA or BNC, but "VGA connector" typically refers to this design.

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High-definition television in the context of SRGB

sRGB (standard RGB) is a color space, for use on monitors, printers, and the World Wide Web. It was initially proposed by HP and Microsoft in 1996 and became an official standard of the International Electrotechnical Commission (IEC) as IEC 61966-2-1:1999. It is the current standard colorspace for the web, and it is usually the assumed colorspace for images that do not have an embedded color profile.

The sRGB standard uses the same color primaries and white point as the ITU-R BT.709 standard for HDTV, but a different transfer function (or gamma) compatible with the era's CRT displays, and assumes a viewing environment closer to typical home and office viewing conditions. Matching the behavior of PC video cards and CRT displays greatly aided sRGB's popularity.

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High-definition television in the context of Digital signal processor

A digital signal processor (DSP) is a specialized microprocessor chip, with its architecture optimized for the operational needs of digital signal processing. DSPs are fabricated on metal–oxide–semiconductor (MOS) integrated circuit chips. They are widely used in audio signal processing, telecommunications, digital image processing, radar, sonar and speech recognition systems, and in common consumer electronic devices such as mobile phones, disk drives and high-definition television (HDTV) products.

The goal of a DSP is usually to measure, filter or compress continuous real-world analog signals. Most general-purpose microprocessors can also execute digital signal processing algorithms successfully, but may not be able to keep up with such processing continuously in real-time. Also, dedicated DSPs usually have better power efficiency, thus they are more suitable in portable devices such as mobile phones because of power consumption constraints. DSPs often use special memory architectures that are able to fetch multiple data or instructions at the same time.

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High-definition television in the context of Apple TV (device)

Apple TV is a digital media player and microconsole made by Apple Inc. It is a small piece of networking hardware that sends received media data such as video and audio to a TV or external display. Its media services include streaming media, TV Everywhere–based services, local media sources, sports journalism and broadcasts.

The first generation Apple TV was introduced in 2007 and was primarily intended to download and play content from the iTunes Store. The second generation model in 2010 was redesigned as an all-streaming device and is only compatible with HDMI-equipped enhanced-definition or high-definition widescreen televisions. The fourth generation model released in 2015 introduced the tvOS operating system and support for third-party apps via an app store.

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High-definition television in the context of Amazon Fire TV

Amazon Fire TV (formerly stylized as amazon fireTV) is a line of digital media players and microconsoles developed by Amazon since November 19, 2014. The devices are small network appliances that deliver digital audio and video content streamed via the Internet to a connected high-definition television. They also allow users to access local content and to play video games with the included remote control or another game controller, or by using a mobile app remote control on another device.

The device is available in two forms, the first being a set-top box, of which the current model is the Fire TV Cube with embedded Amazon Echo smart speaker (which effectively replaced the original Fire TV box model). The other product is a HDMI plug-in stick with, in general, lesser specifications than the contemporaneous boxes; these are offered in the entry-level Fire TV Stick HD, the Fire TV Stick Lite, the standard Fire TV Stick, and the high-end Fire TV Stick 4K and Fire TV Stick 4K Max (the third of which effectively replaced the third-generation "pendant" Fire TV). Additionally, Amazon licenses the Fire OS and Fire TV interface to be embedded and built into certain television sets from third parties sold to the public, labeled as Fire TV Edition.

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High-definition television in the context of Video rental shop

A video rental shop/store is a physical retail business that rents home videos such as movies, prerecorded TV shows, video game cartridges/discs and other media content. Typically, a rental shop conducts business with customers under conditions and terms agreed upon in a rental agreement or contract, which may be implied, explicit, or written. Many video rental stores also sell previously viewed movies and/or new, unopened movies.

In the 1980s, video rental stores rented VHS and Betamax tapes of movies; however, most stores dropped Betamax tapes when VHS won the format war late in the decade. In the 2000s, video rental stores began renting DVDs, a digital format with higher resolution than VHS. In the late 2000s, stores began selling and renting Blu-ray discs, a format that supports high definition resolution.

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