Information display system and information display method

An information display system, comprising:

• a first processing section displaying a circuit diagram based on circuit diagram CAD data of a circuit board on a screen of a circuit-diagram viewer;
• a second processing section displaying a circuit diagram based on layout diagram CAD data of the circuit board on a screen of a layout-diagram viewer;
• a third processing section highlighting a circuit element selected on the screen of either the circuit-diagram viewer or the layout-diagram viewer using a specified color, and giving information for identifying the circuit element selected on the screen to another viewer, and further, highlighting an element corresponding to the circuit element identified by the given information on the screen of the viewer receiving the information using the specified color when receiving the given information from another viewer;
• a fourth processing section displaying a frame structure diagram based on frame structure diagram CAD data relevant to the circuit board on a screen of a frame structure diagram viewer;
• and
• a fifth processing section highlighting a frame portion selected on the screen of the frame structure diagram viewer using the specified color, and giving information for identifying a component or wiring relevant to the frame portion selected on the screen to another viewer, and further highlighting the frame portion relevant to a component or wiring identified by the given information on the screen of the frame structure diagram viewer using the specified color when receiving the information from another viewer.