Tag Archives: hdtv

What is DTS?

Mar 09th, 2010by dvdxplayer 2,565 views |2 Comments

DTS refers to Digital Theater Systems. While Dolby Digital is the standard 5.1 digital surround format on all DVD players, DTS is becoming a possible alternative. DTS, first introduced in the movie Jurassic Park, is now found on many film soundtracks. DTS soundtracks have been available on laser discs for the past couple of years Read More »

The definition of 1080p

Feb 20th, 2010by dvdxplayer 3,105 views |1 Comments

1080p refers to a progressive HDTV signal with 1080 horizontal lines and an Aspect Ratio of 16:9 (1.78:1). All major HDTV broadcasting standards include a 1080i format which has a resolution of 1920×1080, but the progressive HDTV broadcast standards in place right now only allow a resolution of 1280×720 (720p). Currently the only applications using 1080p signals are Blu-ray and HD DVD. Read More »

what’s 1080i?

Feb 19th, 2010by dvdxplayer 3,417 views |1 Comments

1080i refers to an interlaced HDTV signal with 1080 horizontal lines and an Aspect ratio of 16:9 (1.78:1). All major HDTV broadcasting standards include a 1080i format which has a Resolution of 1920×1080, however there are other formats, including HDV and AVCHD for camcorders, which utilize 1080i images with a resolution of 1440×1080. Confusing matters even further, a 4:3 (1.33:1) image broadcast in 1080i (1920×1080) uses the center 1440 Pixels for the image, with 240 pixel wide pillarbox borders on each side.

For HDTVs themselves 1080i can also have different meanings. While you might expect a 1080i HDTV to have a resolution of 1920×1080, this isn’t always the case. For many flat panel 1080i HDTVs the actual Native Resolution is 1366×768. While these TVs accept 1080i input signals (as do all HDTVs) they must scale them down to their native resolution, resulting in somewhat lower picture quality.

Advantages
The obvious advantage to 1080i resolution is that it uses the highest (standard) resolution available for TV signals and consumer electronics equipment. It can also be better for older (analog) interlaced video, which was a standard format to use for TV broadcasting (and video tape) for decades.

Disadvantages
Although there are HDTV broadcasts in 1080i, many channels broadcast in 720p. These broadcasts must be upscaled by any 1080i HDTV. This is particularly true of sports channels. Additionally, regardless of the capabilities of the display, the video encoding currently used for HD video allow a maximum of 30fps for 1080i, while 720p may be encoded at 60fps.

What PIP stand for?

Feb 18th, 2010by dvdxplayer 2,037 views |Comments Off

PIP stands for Picture-in-Picture. It is exactly as it sounds. Imagine a television set that has one main program showing on the entire screen, and then you can choose to show a completely different program in a small square somewhere on the TV screen. PIP requires two independent tuners; one for the main program being displayed and one for the program displayed in the small box. Read More »

What’s PAL

Feb 17th, 2010by dvdxplayer 1,866 views |1 Comments

Definition: PAL (Phase Alternate Line) is the dominant format in the World for analog television broadcasting and video display (sorry U.S.) and is based on a 625 line, 50 field/25 frames a second, 50HZ system. The signal is interlaced, like NTSC into two fields, composed of 312 lines each. Read More »

What’s NTSC?

Feb 16th, 2010by dvdxplayer 2,604 views |1 Comments

NTSC stands for National Television Standards Committee and was approved by the FCC (Federal Communications Commission) in 1941 as the standard for television broadcasting in the U.S. Since NTSC was originally developed with without consideration for the eventual addition of Color – the implementation of color into the NTSC format has been a weakness of the system, thus the term for NTSC became known by many professionals as “Never Twice The Same Color”. Read More »

NTSC and PAL

Feb 14th, 2010by dvdxplayer 2,489 views |Comments Off

The number of vertical lines or pixel rows dictates the capability to produce a detailed image, but there is more. It is obvious at this point that the larger the number of vertical lines or pixel rows, the more detailed the image. However, within the arena of analog video, the number of vertical lines or pixel rows is fixed within a system. The current major analog video systems are NTSC and PAL. Read More »

About H.264

Feb 02nd, 2010by dvdxplayer 1,509 views |Comments Off

H.264 is known as MPEG4 AVC.  The standard is expected to offer up to twice the compression of the current MPEG4 ASP (Advanced Simple Profile), in addition to improvements in perceptual quality. The H.264 standard can provide DVD-quality video at under 1 Mbps, and is considered promising for full-motion video over Topwireless, satellite, and ADSL Internet connections.

What’s widescreen? How do the aspect ratios work?

Dec 20th, 2009by dvdxplayer 2,101 views |Comments Off

Video can be stored on a DVD in 4:3 format (standard TV shape) or 16:9 (widescreen). The width-to-height ratio of standard televisions is 4 to 3; in other words, 1.33 times wider than high. New widescreen televisions, specifically those designed for HDTV, have a ratio of 16 to 9; that is, 1.78 times wider than high. Read More »

Does DVD Support HDTV (DTV)? Will HDTV Make DVD Obsolete?

Dec 17th, 2009by dvdxplayer 2,517 views |Comments Off

Short answers: Partially. No.

First, some quick definitions: HDTV (high-definition TV) encompasses both analog and digital televisions that have a widescreen 16:9 aspect ratio and approximately 5 times the resolution of standard TV (double vertical, double horizontal, wider aspect). DTV (digital TV) applies to digital broadcasts in general and to the U.S. Read More »