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The FCC requires visual-display closed captioning for most TV programs and shows when reshown on the internet, with guidance as to how to file a complaint if you encounter closed captioning that's ...
The term closed indicates that the captions are not visible until activated by the viewer, usually via the remote control or menu option. On the other hand, the terms open, burned-in, baked on, hard-coded, or simply hard indicate that the captions are visible to all viewers as they are embedded in the video.
A significant reason for the demise of American teletext was when Zenith introduced built-in closed captioning decoders in TVs in the early '90s, as mandated by the FCC. It was not practical for Zenith to re-design their TV chassis models that previously had teletext decoder support to have both teletext and closed captioning support.
CTA-708 (formerly EIA-708 and CEA-708) is the standard for closed captioning for ATSC digital television (DTV) viewing in the United States and Canada.It was developed by the Consumer Electronics sector of the Electronic Industries Alliance, which became Consumer Technology Association.
V-chip technology works much like closed captioning and uses the vertical blanking interval in the television signal. The system receives a special code in the broadcast signal that indicates the show's score according to a simple numerical rating system for violence, sex, and language. [ 4 ]
The original system had a black-and-white display, and would locally store programming information for around one week in time. A remote control was used to interact with the unit. When the user found a show they wanted to watch, they would have to turn off the guide and then tune the satellite receiver to the correct service.
EIA-608, also known as "Line 21 captions" and "CEA-608", [1] is a standard for closed captioning for NTSC TV broadcasts in the United States, Canada and Mexico. It was developed by the Electronic Industries Alliance and required by law to be implemented in most television receivers made in the United States.
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