This came up a while ago: a JVC X'Eye is supposedly capable of playing "electronic books" in the EBXA format, with the appropriate add-on. (I think I saw one reference to that add-on somewhere, and that it was listed as rare and expensive - but then, what isn't?)

I can't seem to find anything on EBXA books; it may have been a predominantly Japanese format.

Any ideas on what these were? Were any EBXA titles released in North America? What were they like? (Who would want to read books on a TV screen?)