Lechner Bernard Joseph: Color display for computer terminal. RCA Corporation, September 7, 1971: US3603962 (39 worldwide citation)

A color display system is disclosed which responds to computer-supplied digital signals representing graphic and alphanumeric material. The digital signals include position information bits and color information bits. The position information bits are used to control the beam deflection means of an ...

Nester Edward Oskar, Lechner Bernard Joseph: Turnoff method and circuit for liquid crystal display element. RCA Corporation, April 20, 1971: US3575492 (27 worldwide citation)

Nematic liquid crystal element of the type exhibiting dynamic scattering is erased by applying an alternating voltage to the element at a frequency in the range 2 to 20 kilohertz.