Patent ID: 7262784
Filing Date: 2007-08-28
Classification: G09G

Abstract:
1. A liquid crystal display, LCD controller circuit to hold a fixed image aspect ratio comprising: an R/G/B frame mask circuit; a frame mask signal, which connects to said frame mask circuit of R/G/B, and a primary vertical sync, Vsync′ generator; said primary vertical sync, Vsync′ generator, which connects to a secondary vertical sync, Vsync″ generator; said secondary vertical sync, Vsync″ generator, which connects to a line enable, LE generator; and said line enable LE generator, wherein said Vsync′ generator and said Vsync″ generator are used to provide a range or continuum of screen formats, wherein said primary vertical sync, Vsync′ generator has a main vertical sync, Vsync, signal, an inverse frame-mask signal, and an ‘x’ signal as inputs, wherein ‘x’ is a programmable time delay from a rising edge of said Vsync signal to a rising edge of said Vsync′ signal.