Image display system

Claim 1

An image display system comprising: a driver for supplying a plurality of different types of video signals having different respective standards of resolution; a black signal generating circuit for supplying a black signal independent from said plurality of different types of video signals and for controlling a brightness of said black signal independently from a brightness control of said plurality of different types of video signals; a display panel having a screen including a plurality of pixels arranged in a matrix, a vertical scanning circuit for sequentially selecting rows of said pixels, and a horizontal scanning circuit for sequentially distributing said video signals and said black signal to columns of said pixels so as to be written into selected ones of said pixels, wherein said horizontal scanning circuit comprises a first scanning circuit for sequentially distributing said plurality of different types of video signals to said columns of said pixels so as to be written into the selected ones of said pixels, and a second scanning circuit for distributing said black signal so as to be written into pixels forming a blank region; and a timing generator for controlling a timing of distribution of a control signal in accordance with the respective standard of resolution of said plurality of different types of video signals supplied from said driver to said vertical scanning circuit and said horizontal scanning circuit in said display panel, said timing generator writing said plurality of different types of video signals in a display region within said screen including said rows and columns of said pixels adapted for a respective standard of resolution, and said timing generator including means for controlling said black signal to be written into said pixels forming said blank region of said screen outside said display region.

Claim 7

A method for driving an image display system including: a driver for supplying a plurality of different types of video signals having different respective standards of resolution; a black signal generating circuit for supplying a black signal in dependent from said plurality of different types of video signals; a display panel having a screen comprised of a plurality of pixels arranged in a matrix, a vertical scanning circuit for sequentially selecting rows of said plurality of pixels, and a horizontal scanning circuit for sequentially distributing said video signals and said black signal to columns of said pixels so as to be written into selected ones of said pixels, wherein said horizontal scanning circuit comprises a first scanning circuit for sequentially distributing said plurality of different types of video signals to said columns of said pixels so as to be written into the selected ones of said pixels, and a second scanning circuit for distributing said black signal so as to be written into pixels forming a blank region; and a timing generator for controlling a timing of distribution of a control signal in accordance with the respective standard of resolution of said plurality of different types of video signals supplied from said driver to each scanning circuit in said display panel, said method comprising the steps of: writing using said first scanning circuit said plurality of different types of video signals into said display region within said screen including said rows and columns of said pixels adapted for the respective standard of resolution; controlling a brightness of said black signal independently from a brightness control of said plurality of different types of video signals; and writing using said second scanning circuit said black signal into selected ones of said pixels belonging to said blank region of said screen outside said display region.

Claim 8

A method for driving an image display system including: a driver for supplying a plurality of different types of video signals having different respective standards of resolution; a black signal generating circuit for supplying a black signal in dependent from said plurality of different types of video signals; a display panel having a screen comprised of a plurality of pixels arranged in a matrix, a vertical scanning circuit for sequentially selecting rows of said plurality of pixels, and a horizontal scanning circuit for sequentially distributing said video signals and said black signal to columns of said pixels so as to be written into selected ones of said pixels, wherein said horizontal scanning circuit comprises a first scanning circuit for sequentially distributing said plurality of different types of video signals to said columns of said pixels so as to be written into the selected ones of said pixels, and a second scanning circuit for distributing said black signal so as to be written into pixels forming a blank region; and a timing generator for controlling a timing of distribution of a control signal in accordance with the respective standard of resolution of said plurality of different types of video signals supplied from said driver to each scanning circuit in said display panel, said method comprising the steps of: writing using said first scanning circuit said plurality of different types of video signals into said display region within said screen including said rows and columns of said pixels adapted for the respective standard of resolution; controlling a brightness of said black signal independently from a brightness control of said plurality of different types of video signals; and writing using said second scanning circuit said black signal into selected ones of said pixels belonging to said blank region of said screen outside said display region.