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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HD 101: What is ATSC, PSIP, QAM, and 8-VSB?
atscc So in other atwc as technology evolves we find new ways to send more bits across the same 6MHz channel. Archived from the original on 25 July Retrieved 24 March 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.
Articles lacking in-text citations from October All articles lacking in-text citations.
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. Now before we get into specific broadcasting encoding methods used for over-the-air TV, cable, and satellite; lets cover something that can be a little difficult for internet geeks to understand.
Retrieved from ” https: The easiest example to understand is FM Radio. Unfortunately in practice this isn’t the case, and our beautiful HD turns into block city. Views Read Edit View history. As the digital transition is completed and broadcasters move frequencies — either away from VHF so other services can use it, or are simply moving back to their original channel assignment — most ATSC tuners will require users to rescan in order to update the table.
From Wikipedia, the free encyclopedia. PMCP does not dictate systems’ internal database structures; it is simply a platform-independent protocol for the exchange of data. One way they do this is by putting multiple HD streams on one channel.
ATSC Program and System Information Protocol (PSIP)
There is one station at Digital television in North America. What this really means is that everyone gets their own dedicated channel. It is pretty obvious by the latest surveys that most people don’t understand exactly what it atsd to enjoy HD on their HDTV, but even if you do, you may not understand what most of it means.
Each of these channels is like real estate — they osip making any more of it — and broadcasters get a license from the FCC to use it with some non-monetary strings attached.
PSIP Pro has a comprehensive and easy-to-use interface that allows generation, editing, navigation, and searching of digital television program schedules. Recently operators have been giving out a ” tuning adapter atzc which enables one-way CableCARD host devices to work with SDV, but this is all pretty new and Microsoft has yet to even support it — although we fully expect support in Windows 7.
Advanced Television Systems Committee. It also serves as a support platform for applications such as data broadcasting.
Tired of Google’s complicated answers when psp asked for a simple explanation? 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.
This is a term thrown around a lot these days because it’s actually pretty useful to understand.
This is actually afsc cool technology but the problem is there is the off chance that a channel won’t be available when you want to watch it — very rare — and even more common, your one-way CableCARD enabled Media Center or TiVo won’t be able to tune in the channels at all.
This page was last edited on 3 Aprilat October Learn how and when to remove this template message. The primary purpose of PSIP is to facilitate acquisition and navigation among the digital services available to a particular receiver or set-top-box.
Encoding video vs encoding bits and modulation Another topic that is useful to understand is the differences between encoding video vs encoding bits. The coolest thing about QAM is that since it doesn’t lsip all the error correction of an over-the-air modulation technique, it is much more efficient.
Please help to improve this article by introducing more precise citations. 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.
With the advent of HD bandwidth has become a problem for all content providers, but it helps if you understand how it is managed.
QAM This is a term thrown around a lot these days because it’s actually pretty useful to understand. Got a basic HD topic that you’d love for us to explain? Advanced functions such as recurring events, default event, search event gaps, search event overlap and event over run control are provided to minimize user input. Two revisions largely backwards-compatible with the standard have been made.
This article includes a list of referencesrelated reading or external linksbut its sources remain unclear because it lacks inline citations. Originally, broadband just meant more than one frequency was used to send a signal over the same medium — as apposed to baseband which only uses one frequency.
Television stations work the same way, but the frequencies are mapped to channel numbers to make things simple — so for example, channel 8 in the US is at In fact encoding just means transforming information into different formats, but more importantly, in order to send these bits across a wire or through the air, they must be modulated.
This enabled the broadcasters to send specific data like programming information, but more importantly it supports channel mapping information. And just like AM Radio Amplitude modulation wasn’t as good as FM Radio Frequency modulationtechnology continues to evolve and thus we discover more efficient ways to modulate data.
Unlike the tasc 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.
TV Guide On Atzc is a different, proprietary system arsc by datacasting on a single station, while PSIP is required, at least in the United States, to be sent by every digital television station. Well, it isn’t that it can’t find them as much as it is the fact pwip some providers strip out the PSIP data when shaving bits out — more on that later.
It allows for the generation and management program schedules and contains advanced capabilities and a user-friendly graphic interface at a cost-effective, entry level price.
The real problem with QAM — no fault of it’s own though — is that when a cable operator uses QAM, pskp can also inexpensively encrypt the signal, which is why you might have heard about clear QAM.