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2. Low-definition television - Wikipedia

   en.wikipedia.org/wiki/Low-definition_television

   Low-definition television (LDTV) refers to TV systems that have a lower screen resolution than standard-definition television systems. The term is usually used in reference to digital television , in particular when broadcasting at the same (or similar) resolution as low-definition analog television systems.

3. Narrow-bandwidth television - Wikipedia

   en.wikipedia.org/wiki/Narrow-bandwidth_television

   With reduced image sizes, this is referred to as low-definition television. In the most extreme cases, the number of lines in an image may be reduced to just a few dozen, and bandwidth reduced to a few tens of kilohertz, within the bandwidth of an amateur radio voice channel. Most narrow-bandwidth TV nowadays uses computers and other electronic ...

4. List of common display resolutions - Wikipedia

   en.wikipedia.org/wiki/List_of_common_display...

   Pixel aspect ratio (PAR) The horizontal to vertical ratio of each pixel. Storage aspect ratio (SAR) The horizontal to vertical ratio of solely the number of pixels in each direction.

5. What Is an LCD or LED TV (and Why Does It Matter to You)? - AOL

   www.aol.com/2014/02/01/what-is-an-lcd-or-led-tv...

   In contrast to the old tube-based televisions or shortly lived DLP TVs, LCD TVs offer a high-definition picture with a very thin screen, and have emerged as the dominant high-definition technology ...

6. Television - Wikipedia

   en.wikipedia.org/wiki/Television

   Television (TV) is a ... For the first years of its existence, YouTube offered only one low-definition resolution of 320x240p at 30fps or less. A standard, ...

7. Digital television in the United States - Wikipedia

   en.wikipedia.org/wiki/Digital_television_in_the...

   Enhanced definition—480p, about the same quality as DVDs; High definition—720p; High definition—1080i; High definition—1080p (only used by a few cable operators and some terrestrial stations broadcast in 1080p) Most digital television sets sold in the U.S. use a display with a 16:9 aspect ratio to optimally display HDTV-formatted ...