Patent ID: 7075566

Claim:
A video display apparatus comprising a transmitting set that transmits a video signal through a main communication path including a directional wireless communication medium, and a receiving set including a display portion that displays a video image based on said video signal received through said main communication path, comprising: a main communication path adjusting device for adjusting a spatial matching including positional matching of said main communication path between said transmitting and receiving sets based on first and second control signals; a sub communication path transmitter for transmitting a reception quality signal representing the reception quality of said video signal at said receiving set to said transmitting set through a sub communication path including a non-directional communication medium different from said main communication path; a test video analyzer for having a prescribed test video image displayed by said display portion, receiving light from the displayed video image and analyzing said test video image, thereby generating an analysis result signal; and a controller for generating said first control signal based on said reception quality signal transmitted from said sub communication path transmitter and said second control signal based on said analysis result signal.