Soft Typography

Improvements in digital video typography are seen as a necessary component of increased interactivity and scope of use of soft copy text display systems. A grayscaling scheme produces high quality fonts for display with standard color video equipment, reducing scintillation, smoothing curves, and improving encodability. The same concept allows a "virtual resolution" far beyond the spatial resolution of normal pixel size; this permits up to eighty characters per line of eminently readable text on color televisions. [via]

http://mrbob.www.media.mit.edu/speech/papers/...