Multiple MPEG programs are combined then sent to a transmitting antenna. An ATSC receiver then decodes the TS and displays it.

The Program and System Information Protocol (PSIP) is the protocol used in the ATSC digital television system for carrying metadata about each channel in the broadcast MPEG transport stream of a TV station and for publishing information about television programs so that viewers can select what to watch by title and description.

What PSIP does[link]

PSIP defines virtual channels and content ratings, as well as electronic program guides with titles and (optionally) descriptions to be decoded and displayed by the ATSC tuner.

PSIP can also send:

• the exact time referenced to UTC and GPS time;
• the short name, which some stations use to publish their callsign.

PSIP is defined in ATSC standard A/65, the most recent revision of which is A/65C, published in 2006. A/69 is a recommended practice for implementing PSIP in a TV station.

PSIP also supersedes the A/55 and A/56 protocol methods of delivering program guide information (which the ATSC has deleted). TV Guide On Screen is a different, proprietary system provided by datacasting on a single station, while PSIP is required, at least in the United States, to be sent by every digital TV station.

PSIP information may be passed through the airchain using proprietary protocols or through use of the XML-based Programming Metadata Communication Protocol (PMCP, or ATSC A/76) facility metadata scheme.

Included tables[link]

• STT (system time table)¹ - current time, transmitted at least once per second, with an accuracy of new time values within 1 second or better
• MGT (master guide table)¹ - data pointers to other PSIP tables
• TVCT (terrestrial virtual channel table)¹ - defines each virtual channel and enables EITs to be associated with the channel
• CVCT (cable virtual channel table) - assigns numbers to each virtual channel and enables EITs to be associated with the channel
• RRT (rating region table) - content ratings for each country (region) covered by the station, save the U.S., as that region is loaded into TV sets already
• EIT (event information table)¹ - titles and program guide data
• ETT (extended text table) - detailed descriptions of channels (Channel Extended Text Table or CETT) and aired events (Event Extended Text Table or EETT)
• DCCT (directed channel change table) - see below
• DCCSCT (directed channel change selection code table) - provides for the ability to update states, counties and program genres used in DCCT tables

¹ indicates a US FCC requirement

Directed channel change[link]

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 demographically-based programming to show, such as television commercials or weather bulletins, 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.

See also[link]

• EPG - Electronic program guide

External links[link]

• ATSC Standard A/65: Program and System Information Protocol
• ATSC Standard A/76 Programming Metadata Communications Protocol (PMCP) for transmitting PSIP data between devices in a broadcast facility
• ATSC Recommended Practice A/69: Program and System Information Protocol Implementation Guidelines for Broadcasters
• http://www.etherguidesystems.com/help/sdos/atsc/Syntax/TableSections/Default.aspx: for online details of PSIP table sections

Edwin Laureano Rosa Vazquez (October 15, 1981), known mononymously as Ñengo Flow is a Puerto Rican reggaetón and hip hop singer and composer. He was born in Rio Piedras, Puerto Rico and grew up in Bayamón, Puerto Rico where he would get his start in the music business. It was there that from a young age he would develop interest in the world of urban music. His lyric content came from personal experiences in his neighborhood with other children and classmates. It is not until age 14 when Edwin Rosa was first presented on stage in the neighborhood where he lived in a community movement. There he discovered his mission and dream in life to be an advocate of life in the neighborhood and the streets in his town vent to his experiences in his lyrics.^[1]

Singing career[link]

After a few years the name “Ñengo Flow,” became known, baptizing the name as a subject of his community. His beginnings as an artist started by releasing a mixtape with colleagues and friends. It came to be heard on Univision. This allowed him to easily release his first studio album Flow Callejero in 2005. He would continue to release mixtapes including El Combo Que No Se Deja in 2008 and La Verdadera Calle in 2009. He would also appear on various reggaetón and hip hop compilation albums including Los Anormales (2004), Sangre Nueva (2005), DJ Joe - Abusando del Género (2006). In 2011, he launched his highly acclaimed mixtape Real G4 Life and in 2012 Real G4 Life 2 as well as a Real G4 Life 2.5. Real G4 Life 2 peaked at number 75 on the Billboard Top Latin Albums chart while the 2.5 edition peaked at number 61 on the same chart.^[2] Also in 2012, he would appear on various artists' album including Ivy Queen's Musa while also providing uncredited vocals to the song "La Killer".^[3][4]

Discography[link]

Studio albums[link]

• 2005: Flow Callejero

Mixtapes[link]

• 2008: El Combo Que No Se Deja
• 2011: Real G4 Life
• 2012: Real G4 Life 2
• 2012: Real G4 Life 2.5

See also[link]

	Puerto Rico portal
	Latin American music portal
Error creating thumbnail: convert.im6: unable to open image `/var/sites/mediawiki-1.19.1/images/6/69/P_vip.svg': No such file or directory @ error/blob.c/OpenBlob/2638. convert.im6: delegate failed `"rsvg-convert" -o "%o" "%i"' @ error/delegate.c/InvokeDelegate/1065. convert.im6: unable to open image `/tmp/magick-1y5eB23T': No such file or directory @ error/blob.c/OpenBlob/2638. convert.im6: unable to load module `/usr/lib/x86_64-linux-gnu/ImageMagick-6.7.7/modules-Q16/coders/svg.la': file not found @ error/module.c/OpenModule/1278. convert.im6: unable to open file `/tmp/magick-1y5eB23T': No such file or directory @ error/constitute.c/ReadImage/583. convert.im6: no images defined `PNG:/tmp/transform_2260f6-1.png' @ error/convert.c/ConvertImageCommand/3044.	Biography portal

• List of famous Puerto Ricans

References[link]