Abstract: A device control system has a terminal 3 with an application 31, and a printer 5 that controls a device. The terminal 3 sends a request written in XML generated by the application 31. The printer 5 receives the XML request, the terminal 3 sends an XML response, and if the terminal 3 requested control of the device in the XML request, controls the device.

Abstract: A POS terminal has a server-function unit with a server function, and a client-function unit. When able to communicate normally with the control server, the client-function unit communicates with the control server as a client of the control server, and executes processes with the control server. When unable to communicate normally with the control server 15, the client-function unit communicates with the server-function unit as a client of the server-function unit, and executes processes with the server-function unit.

Abstract: In a system having a control server and a control device that connects to the control server through a global network, the control device can appropriately handle processing when normal communication with the control server is not possible. The POS terminal 10 of a transaction processing system 1 has a client-function unit 501 configured to send authentication information to a control server 15 and request authentication, and acquire and store an access code generated by the control server 15 when authentication is successful. When normal communication is not possible with the control server 15, the client-function unit 501 communicates with the server-function unit 502 as a client of the server-function unit 502 based on the stored access code, and executes processes with the server-function unit 502.

Abstract: When able to communicate with a control server 15, a POS terminal 10 updates a transaction information management database 414 with transaction information data based on a transaction process. The POS terminal 10 stores the transaction information data when not able to communicate, and when communication is enabled again, causes the control server 15 to update the transaction information management database 414 based on the stored transaction information data. If queried for specific transaction information data while unable to communicate with the control server 15 and the requested transaction information data is not stored locally, the POS terminal 10 queries other POS terminals 10 through the local area network LN for the specific transaction information data.

Abstract: A system having a server and a control device that connects to the server through a global network and executes processes referenced to data stored on the server can handle events in which the control device and server cannot communicate with each other. When a control device-side product master database stored by a POS terminal is updated while the POS terminal is unable to communicate with the control server, the POS terminal communicates with another POS terminal through the local area network LN and causes that other POS terminal to update its locally stored control device-side product master database.

Abstract: A control system 1 has an input device that reads and outputs input information, a printer 11 connected to the input device, and a tablet device 10 connected to the printer 11. When input information is output from the input device, the printer 11 identifies the input device of the input source, and outputs the input information to the tablet device 10.

Abstract: A device control system has a terminal 3 with an application 31, and a printer 5 that controls a device. The terminal 3 sends a request written in XML generated by the application 31. The printer 5 receives the XML request, the terminal 3 sends an XML response, and if the terminal 3 requested control of the device in the XML request, controls the device.

Abstract: A device control system has a terminal 3 with a web browser 31, and a printer 5 that controls a connected device. The terminal 3 calls an object that controls a device and is instantiated by the device API 33 to support the device, and sends a request to the printer 5, by the web application 32; and the printer 5 executes a device control script 502 that controls the device, receives requests sent through the device API 33, and controls the device.

Abstract: A device control system has a terminal 3 with an application 31, and a printer 5 that controls a device. The terminal 3 sends a request written in XML generated by the application 31. The printer 5 receives the XML request, the terminal 3 sends an XML response, and if the terminal 3 requested control of the device in the XML request, controls the device.

Abstract: A device control system has a terminal 3 with a web browser 31, and a printer 5 that controls a connected device. The terminal 3 calls an object that controls a device and is instantiated by the device API 33 to support the device, and sends a request to the printer 5, by the web application 32; and the printer 5 executes a device control script 502 that controls the device, receives requests sent through the device API 33, and controls the device.

Abstract: In a control system in which a terminal with a browser and a control device communicate through a network, the system and control device are made compatible with a configuration in which the devices communicate through a network. When establishing a connection between a tablet device 10 and a control device 11 in the POS system 1, both devices store identification information related to the connection, and when reconnecting after the connection is broken, reconnect based on the identification information stored by the devices.

Abstract: Appropriate use of a device by each terminal is enabled based on plural terminals being able to use the device. A control system 1 has a first tablet terminal 101 (terminal) that runs a web browser; a device DV that outputs data input to the web browser, or to which data output from the web browser is input; and a printer 11 including a device communication unit that communicates device input/output data with the device, a terminal communication unit that communicates the device input/output data with the terminal, and a device management unit 20d that manages the relationship between the first tablet terminal 101 and the device DV.

Abstract: Terminals connected to a POS terminal can execute appropriate processes using functions of a browser. A POS system 1 has a first tablet terminal 101 that runs a browser; a second tablet terminal 102 that runs a browser; and a POS control device 11 that is communicatively connected to the first tablet terminal 101 and the second tablet terminal 102, and has a communication unit 20b that sends data received from the browser running on the first tablet terminal 101 to the browser running on the second tablet terminal 102.

Abstract: A device control system has a terminal 3 with a web browser 31, and a printer 5 that controls a connected device. The terminal 3 calls an object that controls a device and is instantiated by the device API 33 to support the device, and sends a request to the printer 5, by the web application 32; and the printer 5 executes a device control script 502 that controls the device, receives requests sent through the device API 33, and controls the device.

Abstract: A device control system has a terminal 3 with a web browser 31, and a printer 5 that controls a connected device. The terminal 3 calls an object that controls a device and is instantiated by the device API 33 to support the device, and sends a request to the printer 5, by the web application 32; and the printer 5 executes a device control script 502 that controls the device, receives requests sent through the device API 33, and controls the device.

Abstract: A control system 1 has an input device that reads and outputs input information, a printer 11 connected to the input device, and a tablet device 10 connected to the printer 11. When input information is output from the input device, the printer 11 identifies the input device of the input source, and outputs the input information to the tablet device 10.

Abstract: In a control method of a control system including a terminal configured to execute an application, a device configured to send or receive data, and a controller connected to the device, a request for a device control is transmitted from the application to the controller. At the controller, the device control by the controller is established after the controller receives the request. At the terminal, the device control by the application through the controller is established after establishing the device control by the controller.

Abstract: A POS system 1 includes a printer unit 21 or other device; a tablet device 10 including a display unit that displays a browser, a browser execution unit 26a that processes information related to the device by an application that runs on the browser, and a connection unit 45 that communicates information related to the device; and a control device 11 including a first communication unit 71 that communicates with the device, a second communication unit 50 that communicates with the tablet device 10, and a device controller 20a that controls the device based on device-related information sent from the tablet device 10.

Abstract: A device control system has a terminal 3 with an application 31, and a printer 5 that controls a device. The terminal 3 sends a request written in XML generated by the application 31. The printer 5 receives the XML request, the terminal 3 sends an XML response, and if the terminal 3 requested control of the device in the XML request, controls the device.

Abstract: A device control system has a terminal 3 with a web browser 31, and a printer 5 that controls a connected device. The terminal 3 calls an object that controls a device and is instantiated by the device API 33 to support the device, and sends a request to the printer 5, by the web application 32; and the printer 5 executes a device control script 502 that controls the device, receives requests sent through the device API 33, and controls the device.