Very informative Banjo. Not only a good read for those wanting to understand CC but also a good lesson in HDTV. One thing I want to mention is that there are efforts to get CC avaliable on HDTV's. It's called DTVCC.
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What is DTVCC?
Source;Digital Television Closed-Captioning (DTVCC) Home Page
Digital Television Closed Captioning (DTVCC) (formerly known as Advanced Television Closed Captioning (ATVCC)) is the migration of the closed-captioning concepts and capabilities developed in the 1970's for NTSC television video signals to the high-definition television environment defined by the ATV Grand Alliance and standardized by the ATSC (Advanced Television Systems Committee). This new environment provides for larger screens, higher screen resolutions, enhanced closed captions, and higher transmission data rates for closed-captioning. The DTVCC specification is defined in the Electronic Industries Association publication EIA-708.
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