Guide Plus
From Wikipedia, the free encyclopedia
Guide Plus+ (in Europe), TV Guide On Screen (in Northern America) or G-Guide (in Japan) is an interactive electronic programme guide system that is used in consumer electronics products, such as television sets, DVD recorders, personal video recorders, and other digital television devices. It offers interactive on-screen programme listings that enable viewers to navigate, sort, select, and schedule television programming for viewing and recording. The differing names are only for marketing purposes -- the entire system is owned by Gemstar TV Guide.
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[edit] How it works
It launched in the United States and Japan in the mid-1990s, and is now being deployed throughout Europe. It is available in France, Germany, Spain, the UK, Austria, Switzerland, the Netherlands, Belgium, and Italy.
The updated programme listings are provided to users free-of-charge, regardless of whether they receive their television signal from an over-the-air broadcast or via cable TV. Satellite TV services are not included, as they have their own EPG systems. The service is supported by advertising.
The original analog TV service uses the vertical blanking interval (VBI) of host television stations that datacast the service, similar to the way closed captioning and teletext are broadcast. This takes several days to download on initial setup because the required data is sent at a low bitrate.
[edit] Digital television
The new service, launched in the United States in 2006, is entirely digital, using the ATSC TV standard. Like the analog service, it is distributed by National Datacast on PBS TV network stations. While this will significantly improve the service, older systems will no longer be able to download listings once analog shutdown is done in early 2009.
It should be noted that PSIP within the ATSC standard already allows for each station to send out its own EPG information, and in the U.S. the FCC in fact requires stations to do so. However, actual implementation is rather spotty, and usually very minimal -- stations often don't have full descriptions (or even correct information) on the current show, much less the next 9-12 hours required of them, or the 36 hours worth of guide information that can be transmitted. Additionally, ATSC tuners are not required to even show the EPG, only the very limited information for the current show on the current channel.
While the TV Guide service also requires software in the TV or other device, and licensing fees (currently $9 per device paid by the manufacturer) or royalties to be paid to Gemstar, it also offers a more complete solution for broadcast television, more like digital satellite or digital cable.
[edit] Supported products
The following brands have compatible products:
A product called Guide Plus Updater was made to automate the downloading of data for the guide plus software that is packaged with ATI TV tuner video cards.
[edit] External links
-RCA
