The method of scanning an entire TV image line-by-line. Pro: Does not have the limitations of interlaced scanning such as artifacting. Con: Requires more bandwidth than interlaced scanning, so a larger and more detailed image isn't feasible.
Some HD televisions use the “progressive” method of scanning, in which the whole picture is transmitted and presented on the screen in one pass. The resulting image is thus remarkably free of flicker and motion artefacts, appearing more “life-like”. Some display types, such as LCD, plasma and DLP are inherently of the progressive scan type, while CRT’s may be scanned progressively (as in computer monitors) or interlaced. SIP: Acronym for "Program and ystem nformation rotocol", an ATSC DTV specification that enables a DTV receiver to locate the various programs sent in the DTV channel, to identify the program information and to create on-screen electronic program guides and content advisories.