HDTV terminology, concepts and abbreviations-(2)

HDTV terminology, concepts and abbreviations-(1)

Component video is also called YPbPr, or YUV YCbCb. Without deep dive into the technical background we can state that consists of analog component video signals with the brightness of the colors from the color itself is sent so the contrast in the image is much better. The three colors shall only be two of the three cables sent.

This video is suitable for HDTV and can handle both "progressive scan'If'interlaced'Information.

DVDs get their information from component video images. Examples of newer digital component video systems are DVI and HDMI. Next to "component video" is the lesser quality "composite video". Here, the image information combined in a single signal. Through this compression loss of quality.

Examples of analog "Composite Video" signals are NTSC or PAL. Composite video is not suitable for HDTV.

Is used to contrast the difference between dark and light areas in an image display.
An image with too little contrast looks gray and faded out. An image with too high contrast, however, as "hard" are experienced, include images or bright colors and lots of black and white.

HDTV's contrast is expressed in 'Contrast ratio' or "contrast ratio"

The higher the contrast ratio, the better the colors are distinguishable. Contrast ratio is also called contrast ratio "mentioned.

An HDTV may have a contrast ratio of 3000:1 are. This means that the screen can distinguish between shades of 3000 white and black.

Plasma screens have over LCD screens often have a higher contrast ratio is gradually decreasing the difference.

The term "CRT" is often the traditional "tube" television meant. The abbreviation CRT stands for cathode ray tube.

CRT monitors contain enough pixels to display images on optimal HD quality display. Only the more modern aircraft equipped with LCD and plasma screens are suitable for HDTV.

Note that the HD ready logo on these devices is indicated. Because not all plasma and LCD screens are necessarily suitable for HDTV.

A decoder is a device capable television signals to 'translate'. Other words that "decoder" is intended receiver, set-top box or receiver, tuner. It is possible to use a decoder to receive digital channels on an analog or digital television. MPEG2 and MPEG4 are examples of digital signals, PAL  is the standard analog TV signal.

The decoder is placed between the TV and external source like a satellite dish, cableOr a ether connection)

Decoders are divided into single and twin tuners tuners. Only in the latter it is possible to view one channel while another channel to take.

In short, de-interlacing or deinterlacing converting an interlaced television signal into a progressive signal.

Interlaced means that the default uses the "motion picture technology." The image lines per image and used to always change. At 1080i (i for interlaced) are in fact over and over 540 picture lines shown.

Because so interlaced signal at only half the number of lines available simultaneously, the intermediate image lines are calculated to achieve a progressive signal out in all cases all the scanning lines can be offered simultaneously. There are several methods to calculate the intermediate lines that we will not deal in detail. In the most advanced methods take into account the movements that occur in the image.

De-interlacing is increasingly important because many new HDTV in Full HD 1080p to display while the TV signal is often offered in 1080i size enters the house.

See also:

• progressive scan

• 720p vs. 1080i

• 1080p

DLNA stands for Digital Living Network Alliance. DLNA is formed by a group of affiliated companies that arrangements have been made about the easy connection of equipment such as personal computers, consumer electronics and mobile devices.

According to the DLNA organization can link wirelessly or via a fixed network in order to happen within the home environment in a simple way to share digital media or developing.

With DLNA member companies include AMD, HP, IBM, Intel, Lenovo, LG, Microsoft, Nokia, Philips, Pioneer, Samsung, Sharp, Sony and Toshiba. The full list was much longer and found the DLNA website. On that website is also much more background information.

An example of a good use of multimedia is DLNA streaming from a Windows PC to the Sony Playstation 3 ".

Digital television is currently in the Netherlands via cable, terrestrial, and the dish over ADSL2 via mobile phone. If the signals enter through the satellite, Is called the DVB-S (Satellite). Does the signal via ether then we call the DVB-T (Terrestrial) and through cable DVBC  (Cable). The latest version is DVB-H, It can be viewed via mobile digital television aparat such as mobile phones and PDAs. The H stands for handheld.

Since August 2005 there is a fourth way to receive digital television, namely through ADSL2, The other name for this is IP-TV.

DVB stands for Digital Video Broadcasting and is the new standard by which digital television can be received. DVB has four variants, with DVB-H is the latest. By means of DVB-H is via mobile devices such as mobile phone or PDA to watch digital television. The H stands for 'Handheld'.

DVB-H can offer a better quality than UMTS and legacy GSM signal.

Meanwhile, the European Union decided that DVB-H standard will be in Europe. In America and some Asian countries like Japan and Korea is already successfully in use.

Total of 4 DVB versions:

    * DVB-S the signal comes in via satellite (Satellite)
    * DVB-T the signal comes in over the air (Terrestrial)
    * DVB-C the signal comes in via cable (Cable)
    * DVB-H signal enters through the ether and is especially suitable for mobile (handheld) devices

Digital television is currently in the Netherlands via cable, terrestrial, via ADSL2 and the dish very shortly * via mobile phone. If the signals enter through the satellite, You will receive the signal DVB-S (Satelite). Does the signal via ether then we call the DVB-T (Terrestrial) and via cable DVB-C (CAble). The latest version is DVB-H, It can be viewed via mobile digital television aparat such as mobile phone and PDA. The H stands for handheld.

Digital television is currently in the Netherlands via cable, terrestrial, via ADSL2 and the dish very shortly via mobile phone. If the signals enter through the satellite, You will receive the signal DVB-S (Satelite). Does the signal via ether then we call the DVB-T (Terrestrial) and via cable DVB-C (CAble). The latest version is DVB-H, It can be viewed via mobile digital television aparat such as mobile phone and PDA. The H stands for handheld.

DVI (Digital Visual Interface) is a digital video standard. The successor to DVI HDMI. These connectors provide both an uncompressed digital video connection.

Of analog video standards is 'Component video' the most common.
The DVI connector is widely used for digital screens to connect to PCs. Sometimes equipped with DVI HDCP. This is a security against piracy.

The acronym stands for Electronic Program Guide EPG. Through this electronic guide you to additional information about television programming. A few days in advance, sometimes several weeks, topical programming to consult. It is often possible to use the EPG a certain type of program or genre to find or record.

EPG works in real time, changes in the programs immediately adjusted.
This guide is to call the remote control decoder. Most decoders and television sets with digital receivers are now equipped with EPG.

EPG functions upon receipt by satelliteDigital cable and ether, but is not available at analogue terrestrial host.

The public broadcasters Netherlands 1, 2 and 3 in some places in the Netherlands still receive analogue terrestrial. The old-fashioned "rake antenna" that public broadcasters can be received, has had its day, because this will die a few years. As of December 11, 2006 the analogue terrestrial broadcasting by stop and put replaced by digital terrestrial signals. This is because digital signals offer advantages over analog. It develops the digital ether in the vision of the cabinet to a full-fledged competitor to cable and satellite. 90% percent of Dutch people receive at present the television signal via cable.

HD DVD was developed as the successor of the DVD. Together with the Blu-ray HD DVD disc has tried to be the new HD standard. It is now clear that these businesses struggle Blu-ray has won.

HD DVD was among others supported by Toshiba, NEC, Intel and Microsoft. HD-DVD was relatively cheap to introduce, the manufacturers were the only production to adjust for Blu-ray, a new production line developed. HD-DVD seemed therefore cheaper than the Blu-ray.

Both Blu-ray and HD DVD have a throughput of 36 Mb / s. That's 3x as fast as the "older" DVD with 11.8 Mb / s. The storage capacity of a standard DVD 5 GB. In a (single layered) is 20 GB HD DVD and Blu-ray has 25 GB of storage space ..

Before a device can carry the HD Ready logo must meet certain minimum requirements such as those in Europe adopted by the European Information & Communications Technology Industry Association (EICTA). The following is a brief summary of the requirements.

    * This minimum number of scanning lines (vertical) should be 720.
    * The unit has inputs for analog YPbPr and DVI or HDMI. DVI and HDMI should HDCP support
    * The device must be connected to sources with a resolution of 1280 × 720 @ 50 and 60Hz progressive (720p) And 1920 × 1080 @ 60Hz interlaced and 50 (1080i)

Before a device is the HD Ready logo should carry p 1080 must meet certain minimum requirements such as those in Europe adopted by the European Information & Communications Technology Industry Association (EICTA). The following is a brief summary of the requirements.

    * This minimum number of picture elements or pixels to 1080 vertical and 1920 horizontal.
    * The unit has inputs for analog YPbPr and DVI or HDMI. DVI and HDMI should HDCP support
    * The device should include can be connected to sources with a resolution of 1920 × 1080 @ 50 and 60Hz progressive (1080p) And 1920 × 1080 @ 60Hz interlaced and 50 (1080i)

HDCP stands for High bandwidth Digital Content Protection. This is a system devised by the film industry to combat illegal copying. It means that only one decoder with HDCP information to an HDTV device that also supports HDCP. Keep this in mind why! DVI connections are sometimes equipped with HDCP HDMI connections are always secure with HDCP.

HDMI (High Definition Multimedia Interface) is an extension / follow-up of DVI video standard. Main difference is that an HDMI connection both digital video and audio signals can be transmitted.

HDMI is an uncompressed digital connection for video and audio. There, only one cable run from receiver to display. In addition, an HDMI connection on a higher bandwidth than DVI. An HDMI terminal is equipped HDCP.

Another advantage of HDMI is that connected devices that meet the HDMI CEC (Consumer Electronic Control) standard with a simple remote control and operable on or off. HDMI CEC is supported from HDMI version 1.3a.

Be careful that you do not pay too much for HDMI cables. Read our article in that regard Do not be fooled by inexpensive HDMI cables.