Control system, display device, control-use host computer, and data transmission method

A display device comprising:

• a first data communication port connected with a first control unit having a predetermined first communication protocol specialized for and dedicated for said first control unit;
• a second data communication port for enabling data communication with another display device connected with a second control unit having a predetermined second communication protocol specialized for and dedicated for said second control unit;
• a data processing section that processes data inputted and outputted via said first and second data communication ports and in accordance with a procedure set beforehand;
• a display section that provides a display corresponding to information processed by said data processing section;
• and
• an input section for inputting the first communication protocol from outside,
• wherein data communication with said another display device is executed according to a common communication protocol.

A recording medium storing a program that directs a computer to function as a display device, said computer having a first data communication port (11) connected with a control unit (2) having a predetermined dedicated communication protocol specialized for said control unit (2) itself, a second data communication port (12) connected with a certain data processing device (5, 7), and display means (14), said recording medium storing:

• a program that directs said computer to function as:
• a data processing section (13) that processes, through a predetermined procedure, data inputted and outputted through said first and second data communication ports (11, 12);
• and
• a display section (14) that provides a display corresponding to the information processed by said data processing section (13), and,
• a program that directs said computer to function as:
• first communication means (11) that executes data communication with said control unit (2) according to a dedicated communication protocol, by controlling said first data communication port (11);
• and
• second communication means (12) that executes data communication with said data processing device (5, 7) according to a common communication protocol, by controlling said second data communication port (12).

A recording medium storing a program that directs a computer to function as a display device, said computer having a first data communication port (11) connected with a first control unit (2α) having a predetermined first communication protocol specialized for and dedicated for said first control unit (2α), a second data communication port (12) for enabling data communication with another display device (3β) connected with a second control unit (2β) having a predetermined second communication protocol specialized for and dedicated for said second control unit (2β), and display means (14), said recording medium storing:

• a program that directs said computer to function as:
• a data processing section (13) that processes, through a predetermined procedure, data inputted and outputted through said first and second data communication ports (11, 12);
• a display section (14) that provides a display corresponding to the information processed by said data processing section (13);
• an input section (16, 12) that inputs the first communication protocol from outside;
• and
• communication means (12) that executes data communication with said another display device (3β) according to a common communication protocol, by controlling said second data communication port (12).