WeatherStar

WeatherStar (sometimes rendered Weather Star or WeatherSTAR) (meaning Satellite Transponder Addressable Receiver)[1] refers to the technology used by The Weather Channel (TWC) to generate their Local Forecast segments (currently known as Local on the 8s) on cable TV systems nationwide. The hardware takes the form of a computerized unit installed at a cable television headend. It receives, generates, and inserts local forecast and other weather information, including weather advisories and warnings, into TWC's national programming.

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History

Since its introduction at TWC's launch in 1982, several generations of the WeatherStar have been used:

Weather Star I

The Weather Star I, the original Weather Star, was released on TWC's launch. It would (like subsequent Weather Star units) receive local weather data from TWC and the National Weather Service via data encoded in the vertical blanking interval of TWC's video, as well as receiving extra data from a subcarrier transmitted above TWC's video and audio signals on its transponder on satellite. The Weather Star I was manufactured and developed for TWC by Compuvid, based in Salt Lake City, Utah. A couple of years before the founding of TWC, Compuvid had already made a similar product which was installed at cable TV systems owned by Landmark Communications, TWC's corporate parent at the time. This system displayed weather conditions, forecasts, and announcements on viewers' TV screens via a set of locally-installed weather sensors at the cable headend. The Weather Star I was an updated version of this unit, receiving data from both TWC and the National Weather Service.

The Weather Star I lacked graphics and was only capable of displaying white text on various backgrounds: purple for the "Latest Observations" and "Weather Information" (which displayed random data, usually weather-related trivia, past weather events in the area, or info on upcoming programming) pages, grey for the "36 Hour Forecast" page, brown for scrolling weather advisories, and red for scrolling weather warnings. Until the release of the Weather Star III, TWC only used one 1 minute long local forecast sequence featuring each of the three forecast screens mentioned above. As with all future Weather Star models, the Weather Star I could key its text over TWC's national video feed, most often to display the current conditions at the bottom of the screen.

Even though the Weather Star I met the Federal Communications Commission's Part 15 regulations for emanated RF interference (RFI), it still radiated enough to interfere with broadcast channel 2, resulting in problems at the cable TV's headend where the Weather Star I unit was installed. This problem was temporarily solved by having ferrite chokes attached to all cables and wires attached to the Weather Star.

The Weather Star I was also notorious for frequent text jamming and text garbling issues.

Weather Star II

The Weather Star II, released in 1984, had improved RF shielding and an improved overall hardware design. Otherwise, it was similar in features to the Weather Star I.

Weather Star III

The Weather Star III, released in 1986 as an upgrade to the Weather Star II, was another text-only unit essentially identical to the Weather Stars I and II, though with additional internal improvements and forecast products (and consequently, more local forecast sequences). However, TWC decided to drop the "Weather Information" product soon after the introduction of the STAR III. The Weather Star III was completely retired in December 2004 to comply with 2005 FCC alert regulations requiring an audible tone to sound at the start of every display of a weather warning. The Weather Star III and previous units were capable of generating an audio alert tone only during the first display of a weather warning. From 1989 to 1992, The Weather Network/MétéoMedia in Canada (which are equivalents of TWC) used Weather Star III technology to display local forecasts, which were on a sky blue background, a colour TWC's units did not use.

Current systems

WeatherStar content

Many of the segments displayed by all WeatherStars have gone through several changes throughout the history of The Weather Channel:

External links

References