Patent ID: 6057812
Filing Date: 2000-05-02
Classification: G06F,G09G

Abstract:
A computing system comprising:a computer which outputs (i) image data including a video signal portion and a synchronization signal portion, (ii) a first control signal that carries displayed image size and position, (iii) a second control signal which is generated by a program that is previously programmed for operating a computer body, and which receives a feedback signal;a display unit for receiving the image data and the first and second control signals from the computer and for outputting a reception confirmation as the feedback signal which indicates confirmation of receiving the first or second control signal for communication to the computer, the display unit including:a video circuit for receiving the vedio signal portion included in the image data;a driving circuit for receiving the synchronization signal portion included in the image data;a display device controlled by signals from the video and driving circuits to generate the displayed image;a memory which stores control data concerning display control, the memory receiving the second control signal and reading our corresponding control data;a display controller which (i) receives image data and at least the first control signal from the computer, (ii) supplies the video signals to the video circuit and the synchronization signals to the driving circuit, (iii) controls the driving circuit to control at least one of the size and position of the displayed image in accordance with at least one of the first control signal from the computer and the stored control data which is read out from the memory, and (iv) supplies the reception confirmation feedback signal from the display unit to the computer; anda common bi-directional interface cable for carrying the image data and the first and second control signals from the computer to the display unit and for carrying the reception confirmation signal from the display unit to the computer.