HDTV
- HIGH DEFINITION TELEVISION (HDTV)
HDTV is a new television standard that uses digital signals rather than the
current analog standard. HDTV signals contain over 700 lines of resolution
compared to the 525 lines of resolution that analog provides. HDTV also has
a wider width to height of the screen for a true theater-like experience.
The images are digitized and compressed before signal transmission to enable
the tremendous quantity of information to pass through easily. The signals
are then decompressed when they reach the television. The result is a clear,
crisp picture that transcends other any other picture formats.
- Introduction to HDTV, by Prof. Kelin Kuhn, http://www.ee.washington.edu/conselec/CE/kuhn/hdtv/95x5.htm
- Conventional Analog Television - An Introduction, http://www.ee.washington.edu/conselec/CE/kuhn/ntsc/95x4.htm
- http://www.high-definition.tv/HDresources.htm
- GRAND
ALLIANCE - HDTV SYSTEM SPECIFICATION 2.0
- Sarnoff.com, vision technologies: http://www.sarnoff.com/government_professional/vision_technology/core_technology/index.asp
- ATSC: http://www.atsc.org/standards.html
- Guide to the Use of the ATSC Digital Television Standard
5.2.1.2 Sampling Rates
For the 1080-line format, with 1125 total lines per frame and 2200 total samples per line, the
sampling frequency will be 74.25 MHz for the 30.00 frames per second (fps) frame rate. For the
720-line format, with 750 total lines per frame and 1650 total samples per line, the sampling
frequency will be 74.25 MHz for the 60.00 fps frame rate. For the 480-line format using 704
pixels, with 525 total lines per frame and 858 total samples per line, the sampling frequency will
be 13.5 MHz for the 59.94 Hz field rate. Note that both 59.94 fps and 60.00 fps are acceptable as
frame or field rates for the system.
i1080 and i720 HDTV set