Patent ID: 7474276

Claim:
A display system comprising: a host apparatus having an image output interface; a display apparatus which is operated by supply of at least one of a video signal and power from said host apparatus; and a communication interface for communicating data between said host apparatus and said display apparatus; wherein said display apparatus comprises: a storing section for storing power consumption data; a storing section for storing on-screen display information; and a display-side communication-section for transmitting said stored power consumption data and said on-screen display information; wherein said host apparatus comprises: a host-side communication section for receiving said power consumption data transmitted from said display apparatus and said on-screen display information; a power control section for entirely performing power control of said display system based on said power consumption data received from said host-side communication section; and an information superimposing section for superimposing said received on-screen display information on the video signal; and wherein the host-side communication section transmits the video signal having the on-screen display information superimposed thereon, the display-side communication section receives the transmitted signal, and the display apparatus displays an image of the on-screen display information.