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Eyewitness News
HDTV Expert
Providence, RI- Local broadcast history was made when WPRI-TV launched its new digital TV station WPRI-DT. WPRI-DT was the first digital TV station in Providence, Rhode Island. This event is another in a list of "firsts" for the station. WPRI 12 was the first to broadcast a 10:00 PM news through itÔŅĹs sister station, WNAC-TV (January 1997), the first Providence station to utilize a satellite truck in news gathering (1993) and the station that produces the most local news in Providence, over 30 hours per week.
With clearer pictures and better sound, WPRI-DT allows viewers to watch their favorite shows in picture-perfect detail.
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HDTV FAQ
What is HDTV? HDTV (High Definition Television) is an entirely new way of transmitting and receiving a television broadcast signal. HDTV is Digital TV that displays a wide screen image at 720P or 1080i quality. HDTV broadcasts transmit up to six times the information as the old analog TV system, delivering higher quality picture and sound.
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Technology
How Does It Work In analog TV, a 6 MHz analog signal carries intensity and color information for each scan line of the picture. An analog TV signal in the U.S. has 525 scan lines for the image, and each image is refreshed every 30th of a second (half of the scan lines are painted every sixtieth of a second in what is called an interlaced display).
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Myths and Facts
Myth: I already have Digital Television because I have digital cable. Fact: Maybe yes, maybe no. Digital cable is not necessarily Digital TV (DTV) from broadcasters.
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Glossary Of Terms
AC-3: The 5.1-channel sound system specified in the Standard for Digital-HDTV. Also known as "Dolby Digital," AC-3 delivers CD-quality digital audio and provides five full-bandwidth channels for front left, front right, center, surround left and surround right speakers, plus an LFE (low-frequency effect) subwoofer, for a total of 5.1 channels.
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