A method and apparatus is shown for improving the clarity and character density on a cathode ray tube (CRT) display in which characters are formed row by row from discrete character elements in row and column coordinate matrices. Unblanking signals form the discrete character elements no less than two...http://www.google.com/patents/US4053878?utm_source=gb-gplus-sharePatent US4053878 - Method and apparatus for improving the clarity and character density on a dot matrix video display
