Control system, display device, control-use host computer, and data transmission method
First Claim
1. A data transmission method, applied when data is transmitted between a display device and a control unit and between said display device and a data processing device, said display device being provided between said control unit and said data processing device, said control unit transmitting data according to a dedicated protocol, and said data processing device transmitting data according to a common protocol, said method comprising:
- dedicated protocol communicating including transmitting data between said display device and said control unit according to the dedicated protocol; and
common protocol communicating including transmitting data between said data processing device and said display device according to the common protocol,wherein in said common protocol communicating, communication is conducted between said display device and said data processing device via a common communication line.
2 Assignments
0 Petitions
Accused Products
Abstract
A control system including control devices with each control device including a control unit and a display device connected with the control unit via a dedicated communication line and being capable of display corresponding to a control state of the control unit. The display device includes a communication port connected with a control unit and a communication port connected with a data processing device, and a data processing section. Further, the data transmission method includes a dedicated protocol communication transmitting data with a processing device and a common protocol communication transmitting data with another processing device. In addition, the control-host computer used in the control system includes a control unit controlling a control target and a display device.
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Citations
6 Claims
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1. A data transmission method, applied when data is transmitted between a display device and a control unit and between said display device and a data processing device, said display device being provided between said control unit and said data processing device, said control unit transmitting data according to a dedicated protocol, and said data processing device transmitting data according to a common protocol, said method comprising:
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dedicated protocol communicating including transmitting data between said display device and said control unit according to the dedicated protocol; and common protocol communicating including transmitting data between said data processing device and said display device according to the common protocol, wherein in said common protocol communicating, communication is conducted between said display device and said data processing device via a common communication line. - View Dependent Claims (4, 5, 6)
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2. A storage medium storing a program that causes a computer to function as a display device provided between a control unit and a data processing device so as to transmit data to said control unit according to a dedicated protocol and transmit data to said data processing device according to a common protocol, said storage medium storing said program that causes said computer to execute:
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dedicated protocol communicating including transmitting data to said control unit according to a communication protocol specialized for said control unit; common protocol communicating including transmitting data to said data processing device according to a communication protocol common to the data processing device that is connected with said display device; and communication protocol converting including converting the common protocol into the dedicated protocol; and as a program for execution of said communication protocol conversion, said program that causes the said computer to execute sub-steps of; holding special information of said control unit extracted from the dedicated protocol and information that is common among said common protocols corresponding to the special information, in a form of a conversion table; and converting common information sent from said data processing device into special information of said control unit, referring to said conversion table.
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3. A storage medium storing a program that causes a computer to function as a display device provided between a control unit and a data processing device so as to transmit data to said control unit according to a dedicated protocol and transmit to said data processing device according to a common protocol, said storage medium storing said program that causes said computer to execute:
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dedicated protocol communicating including transmitting data with said control unit according to a communication protocol specialized for said control unit; data sending including, prior to said dedicated protocol communicating, sending a protocol determination command from said display device to said control unit, the protocol determination command being used for selecting, from among a group of protocols, a communication protocol to be used for data transmission between said control unit and said display device possessed by itself and sending out preset data according to the selected communication protocol; and protocol determining including waiting for a response from said control unit, and determining a communication protocol to which a predetermined response is obtained, as a communication protocol to be used for the data transmission between said control unit and said display device.
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Specification