ATSC
Below is a MRR and PLR article in category Computers Technology -> subcategory Communications.
ATSC: Advanced Television Systems Committee
Overview
The Advanced Television Systems Committee (ATSC), established in 1982, developed the ATSC Standards for digital television. These standards are widely used in several countries, including the United States, Canada, South Korea, Mexico, and Honduras.Transition from NTSC to ATSC
The ATSC Standards represent a significant upgrade from the older NTSC system. In the United States, this transition was completed by February 17, 2009, and in Canada by August 31, 2011. The new digital format offers high-definition resolutions, up to 1920x1080 pixels, with a widescreen 16:9 aspect ratio. It also supports various image sizes, allowing for up to six standard-definition channels to be broadcasted simultaneously.Audio and Video Capabilities
ATSC offers cinema-quality audio, incorporating the Dolby Digital AC-3 format to deliver 5.1 channel surround sound. Each ATSC broadcast requires a dedicated channel, distinct from analog signals. Virtual channels can be remapped to numbers between 1 and 99, often aligning with existing NTSC channels.Technical Aspects
As a comprehensive standard, ATSC includes elements from MPEG, AC-3 audio coding, and 8VSB modulation, making it heavily patented. Although once criticized for its complexity and cost, ATSC has become more user-friendly and affordable compared to the globally popular DVB system. The ATSC signal is adept at adapting to changes in radio propagation conditions, despite its fixed settings regarding error correction and modulation.Global Adoption
ATSC is used across numerous regions, particularly in the Americas and Asia/Pacific:Americas
- United States- Canada
- Mexico
- Argentina
- Bahamas
- Bermuda
- Colombia
- Chile
- Guatemala
- Honduras
- Peru
Asia/Pacific
- South Korea- American Samoa
- Guam
- Northern Mariana Islands
ATSC continues to evolve, offering robust and versatile television standards worldwide.
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