analog televisionPreceding digital television (DTV), all televisions encoded pictures as an analog signal by varying signal voltage and radio frequencies. DTV is fast replacing analog TVs as digital broadcasting enables broadcasters to offer television with movie-quality picture and sound. Analog systems are more commonly known as NTSC systems.
A U.S. Senate panel has set an April 7, 2009, as the deadline for television stations to switch entirely from analog to digital broadcasts. Analog televisions will work until all analog broadcasting ceases. Once the transition to complete DTV has taken place, a converter will be required to receive DTV signals and change them to the analog format of these older types of televisions. However, these DTV-to-analog converters will not produce true DTV quality.
Analog televisions are now commonly referred to conventional televisions.
See also DTV.
Perceptual computing is the ability for a computer to recognize what is going on around it. More specifically, the computer can perceive the... Read More »Apple Pay Promises to Strengthen Payment Security
Experts believe that Apple Pay and other competitive payment systems will be far more secure than cards, even cards equipped with EMV chips. Read More »The Great Data Storage Debate: Is Tape Dead?
Tape clearly is on the decline. But remember, legacy systems can hang for a shockingly long time. Read More »
A network is a group of two or more computer systems or devices, linked together to share resources, exchange files and electronic communications.... Read More »Computer Architecture Study Guide
This Webopedia study guide describes the different parts of a computer system and their relations. Read More »Webopedia Polls
The trend for the past two years has been for shoppers to spend more online during the holiday season. How do you typically shop for holiday... Read More »
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
- Watch Datamation's editor James Maguire moderate roundtable discussions with tech experts from companies such as Accenture, Dell, Blue Jeans Network, Microsoft and more »