In the U.S., this term is commonly used to refer to a TV set that can display HDTV broadcasts. Actually many HDTV sets use analog processing for HDTV, they have no HDTV tuner built in and the HDTV video signal fed from an external tuner has been fully decoded and converted to analog. On the other hand, the best display of analog broadcasts requires digital components, namely the comb filter and a de-interlacer and/or scaler.
More efficient means of transmitting television services which offers more channels and interactive services, as well as improved picture and sound quality.
TV capable of displaying digital or standard signals.
A television where the display screen is made up discrete picture elements (pixels) which are addressed digitally; examples are plasma, LCD, and DLP types. This term is often erroneously used to refer to analog designs capable of HDTV resolutions, such as 16x9 CRT projection sets.
Televisions capable of displaying a digital signal, the coming standard for broadcast TV. Digital TVs are still capable of displaying today's standard signals.
A digitised TV signal is one that is compressed in size by reducing repeated information in order that several TV channels can occupy the space of one analogue channel. The days of traditional analogue television are numbered as the Government has announced it will be switched off as early as 2008. Current estimates suggest that this is not realistic as the take up of digital TV has not been as fast as expected.
Television signals carried by digital, rather than analog, methods. Often higher definition. Shorthand for a whole slew of technologies slated for deployment in the next few years.
The next generation in television, DTV broadcasters will use the language of computers and the Internet (i.e., bits: ones and zeros) to transmit a large amount of information to home TV receivers. Because much more information is sent as compared to standard analog television, these pictures will be much sharper and more detailed. DTV broadcasters will also be able to send additional text, such as sports scores and closed-captioning.
The future method of broadcasting television signals. Using state-of-the-art digital technology, the new system is extremely flexible, allowing the transmission of perfect pictures in a number of display formats, including high- and standard-definition television, in both conventional and wide-screen versions. The accompanying audio is CD-quality with up to six channels of surround sound. In the standard-definition mode, broadcasters will be able to transmit up to six completely separate programs simultaneously. In addition, broadcasters will be able to send ancillary digital material.
Television signal transmitted and interpreted as individual bits of binary information (the use of numbers 0 and 1), using electrical or electromagnetic signals that can be modulated to convey their specific content. A digital television picture has a 16:9 ratio and up to 1,080 lines of resolution, producing a sharper picture. See PBS Digital TV Glossary.
Involves converting the signal to a digital data stream and compressing it by removing repeated information. With a special receiver it enables several channels to use just one satellite transponder
Information is received and displayed on a digital TV using binary information (0s and 1s) giving options for better picture and sound quality and providing additional information services based on interactivity.
Television signals transmitted and received in digital format. Digital TV has several formats and varying degrees of resolution, from 480 lines per screen progressively scanned to 1080 lines interlaced. DTV includes HDTV, but not all DTV is HDTV since the bandwidth required for HDTV can be broken down to accommodate several DTV signals of lesser resolution.
(DTV): refers to the new U.S. standard for digital television, as defined by the ATSC. Digital TV consists of no less than 18 different picture formats, including standard definition formats and high definition formats. Also see High Definition TV. back to the previous page