ATSC Program and System Information Protocol (PSIP). The ATSC Program and System Information Protocol (PSIP) is specified in standards document A/ Once you buy an HDTV it doesn’t take long before you get confused by all the acronyms. We love us some HD, but the days of simply bringing. information in the ATSC PSIP standard, system information and program information. System information allows navi- gation and access to the channels within.

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The Program and System Information Protocol PSIP is the MPEG a video and audio industry group and privately defined program-specific information originally defined by General Instrument for the DigiCipher 2 system and later extended for the ATSC digital television system for carrying metadata about each channel in the broadcast MPEG transport stream of a television station and for publishing information about television programs so that viewers can select what to watch by title and description.

The easiest example to understand is FM Radio. We love us some HD, but the days of simply bringing a new set home and plugging into a coax cable are long over — at least for most.

The good news is that while pisp continues to change, due to compatibility reasons these technologies evolve slowly. Typical for the tech industry that the term broadband isn’t exactly used correctly, but it’s probably more fair to say that word just change meanings as the technologies evolves. 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 television station.

The one thing we didn’t touch on though was satellite technology and mostly this is because both of the providers atsv the US require you to use their STBs anyways, and there really aren’t many reasons you’d need to know what types of modulation they used — at least not in the context of this port.

The real problem with QAM — no fault of it’s own though — is that when a cable operator uses QAM, it can also inexpensively encrypt the signal, which is why you might have heard about clear QAM.


Another topic that is useful atcs understand is the differences between encoding video vs encoding bits. QAM This is a term thrown around a lot these days because it’s actually pretty useful to understand.

Arsc from the original on 25 July PSIP information may be passed through the airchain using proprietary protocols or through use of the Programming Metadata Communication Protocol metadata scheme. This is a term thrown around a lot these days because it’s actually pretty useful to understand. All this really means is that the QAM signal is not encrypted, which means all you have to do is plug the coax into your tuner and start watching HD.

Program and System Information Protocol

Television stations work the pisp way, but the frequencies are mapped to channel numbers to make things simple — so for example, channel 8 in the US is at So now that you understand most of this — hopefully — it should serve you well for years.

This is where instead of sending every channel to every house, all the time, only the channels that are being watched are being sent. Interestingly, p30 is actually a part of the spec, but most don’t expect it to ever be utilized because And of course QAM doesn’t evolve overnight, so operators have to find new ways to make more efficient use of the bandwidth currently available.

Unlike the internet where all the data is broken up into little packets and sent across the same shared pipe, digital TV is more like a traditional phone system.

HD 101: What is ATSC, PSIP, QAM, and 8-VSB?

These systems can be outside Program listing services, program management systems, traffic commercial and program scheduling and broadcast automation systems, which all contribute a portion of the PSIP data to a PSIP Generator. And just like AM Radio Amplitude modulation wasn’t as good as FM Atscc Frequency modulationtechnology continues to evolve and thus we discover more efficient ways to modulate data.

American broadcast television Template: Two revisions largely backwards-compatible with the standard have been made. Well, it isn’t that it can’t find them as much as it is the fact that some providers strip out the PSIP data when shaving bits out — more on that later.


Program and System Information Protocol – Wikipedia

So in other words as technology evolves we find new ways to send more bits across the same 6MHz channel. PSIP Pro atsf a comprehensive and easy-to-use interface that allows generation, editing, navigation, and searching of digital television program schedules.

So even if channel 10 is off the air, channel 12 can’t use the throughput.

So what operators do is put three i channels per QAM channel, which doesn’t take 11th grade math to figure out there isn’t always going to be enough bits to go around — bet you wish this was packet switched now. Recently operators have been giving out a ” tuning adapter ” which enables one-way CableCARD host devices to work pwip SDV, but this is all pretty new and Psi has yet to even support it — although we fully expect support in Windows 7.

Tired of Google’s complicated answers when you asked for a simple explanation? The two channels have no affect on each other, they each have their own discrete channels.

PSIP is not only the foundation for maintaining the station’s digital TV identity but, also the delivery of a rich variety of television-related data services, including the electronic program guide data, caption service data, content advisories, and support of multiple languages.

HD What is ATSC, PSIP, QAM, and 8-VSB?

There is one station at The cable provider’s STBs don’t have the channel mapping problem because they have access to a virtual channel table. What this really means is that everyone gets their own dedicated channel. The more recent technology that operators have turned psipp is switched digital video SDV. While understanding the ins and outs of either standard is well beyond the scope of any article, you should know that both use the same size channels 6MHz and that until a channel goes all digital, it is actually broadcasting on both frequencies simulcasting.