I would please like assistance identifying an application that was extensively used on cable television systems throughout the 1980s. It allowed for blinking cursors and scrolling text. The background colors were changeable. The messages would change every ten to fifteen seconds, sometimes instantly, and other times they changed as if they were being speed typed. I have linked a screenshot which depicts an example of it in use. A significant clue may be the character font, as I do not recall ever seeing it in lower-case. I should also mention the earliest year I have seen this type of text channel used is in 1981.
http://www.4freeimagehost.com/uploads/385df90fe4f4.jpg
http://www.4freeimagehost.com/uploads/385df90fe4f4.jpg