Image data transmission system, process and program, image data output device and image display device

A projector system which is network-connectable to a computer supplying image data for projection and includes at least one projector,

• the computer including:
• a projector finding unit which finds at least one connectable projector;
• a keyword setting unit which enters a first keyword corresponding to a specific projector of the at least one connectable projector;
• a projector connection establishing unit which outputs the first keyword to the specific projector;
• and
• an image data output unit which outputs the image data to the specific projector;
• and
• the projector including:
• a keyword generating unit which generates a second keyword to be inputted to the computer;
• a keyword determining unit which determines whether the first keyword matches the second keyword, when the first keyword is received from the computer:
• a computer connection establishing unit which establishes connection to the computer when the keyword determining unit determines the first keyword matches the second keyword;
• and
• an image projecting unit which projects an image based on the image data inputted from the computer, the image projecting unit visibly projecting the second keyword generated by the keyword generating unit.