Information AboutPsip |
| CATEGORIES ABOUT PROGRAM AND SYSTEM INFORMATION PROTOCOL | |
| digital television | |
|
WHAT PSIP DOES PSIP defines Virtual Channel s and Content Rating s, as well as Program Guide s with Title s and Description s to be decoded and displayed by the ATSC Tuner . PSIP can also send:
PSIP was defined in ATSC standard A/65, the most recent revision of which is '''A/65C''', published in 2006 . For Taiwan , '''A/68''' is the extension of the A/65 standard which relates mainly to the transmission of the Chinese Language using Unicode 3.0. '''A/69''' is a Recommended Practice for implementing PSIP in a TV station. PSIP also supersedes A/55, now a Deprecate d (though not yet officially deleted) method of delivering the program guide. TV Guide On Screen is a different system provided by Datacasting on a single station, while PSIP is sent by every station to some extent. PSIP information is passed through the Airchain by the XML -based Programming Metadata Communication Protocol (PMCP). INCLUDED TABLES
¹ indicates a US FCC requirement Directed channel change The DCC function lets broadcasters tell a DTV receiver where to change, based upon the viewer's settings. This is most likely to be a ZIP or other Postcode , which can select Demographic ally-based programming to show, such as Television Commercial s or Weather Bulletin s, possibly taken from an accompanying Datacasting channel. Implementation of the DCC feature is entirely optional, and depends on development of Receiver and Decoder Technology . For example, a Digital Video Recorder could record commercials broadcast at other times for later replay, so that many more different commercials could be shown in different parts of a large Metro Area than can actually be transmitted at once. EXTERNAL LINKS
|
|
|