Abstract: A server apparatus is connected to a printer in a communicable manner. The printer includes a first printer and other printers. The server apparatus includes a first acquisition section that acquires, when an error occurs in the first printer, error occurrence information indicating that the error has occurred from the first printer, a second acquisition section that acquires, when the error occurrence information is acquired, a first action log indicating the printing action of the first printer, and a normal action log indicating the printing actions of the other printers, which perform the printing actions normally, a comparator that compares the first action log with the normal action log, and an estimator that estimates an item relating to the error from the items contained in the first action log based on the result of the comparison performed by the comparator.

Abstract: A server device is a server device to be coupled to a printer so as to be able to communicate with each other, including an instruction unit configured to transmit a second instruction of making the printer perform a printing operation when an error occurs in the printer, and a first acquisition unit configured to make the printer generate a first operation log as a log related to the printing operation based on the second instruction, and obtain the first operation log from the printer.

Abstract: The relationship between sending device and receiving device is controlled with a high degree of freedom when sending and receiving data between multiple devices. A POS system has a second tablet terminal that receives data, and a host device. The host device has a server interface that sends data to the second tablet terminal; a storage unit that includes a transmission buffer for storing data and stores buffer link information relating the transmission buffer to the second tablet terminal to which the data is sent; and a communication unit 2 that acquires data and control storing the data to the transmission buffer. When the communication unit stores the data to the transmission buffer, the stored data is sent to the second tablet terminal.

Abstract: The correlation between a device on the sending side and a device on the receiving side can be controlled with a high degree of freedom when sending and receiving data between multiple devices. A POS system 1 includes a host device 11 with a storage unit 25 having a data storage box 26 that stores data, and a transmission unit that sends data the data storage box 26 stores when data is stored in the data storage box 26; and a display tablet 102 that receives and displays data sent by the host device 11. The display panel 102c of the display tablet 102 is linked to the data storage box 26 of the storage unit 25 of the host device 11.

Abstract: A transmission system includes a data supply device that transmits data, a transmission device that receives such data, and multiple receiving devices, at least one of which receives the data sent by the transmission device. The transmission device includes a transmission unit that sends the data to one or more of the receiving devices, and a storage unit having a storage area associated with the one or more receiving devices and which stores data relationally to each such receiving device. The transmission unit further includes a data control unit that, upon storing the data sent by the data supply device in the storage area associated with the receiving device(s), sends the data to the appropriate receiving device(s) and processes a report sent from each receiving device that received data.

Abstract: In a system in which a server and a client to which a device is connected communicate, the server can execute processes based on the result of checking device operation. The POS terminal of a network system has a device control function for controlling the device, and a diagnostic function for checking operation of the device. To check the operation of the device connected to the client, a maintenance server sends a control command instructing starting the diagnostic function to the POS terminal. The POS terminal stops the device control function if the device control function is executing, starts the diagnostic function, checks operation of the device with the diagnostic function, and returns the result of the checked operation to the maintenance server.

Abstract: A recording device 11 has a control unit 20 that executes multiple restore processes. The control unit restores a backbone system based on a restore file stored in a USB memory UM if the recording device 11 is started with the USB memory UM already connected. The control unit initializes the backbone system based on an initialization file in the USB memory UM when the USB memory UM is newly connected while the recording device 11 is already running. The control unit creates a restore file to restore the backbone system, and saves the created restore file to the USB memory UM if an initialization file is not already stored in the USB memory UM.

Abstract: A recording device 10 determines if a wireless LAN adapter AD was connected when the recording device 10 turned on; and monitors if a wireless LAN adapter AD becomes connected after the recording device 10 turned on. If the wireless LAN adapter AD is connected after the recording device 10 turns on and a password was previously set, the recording device 10 enables a wireless communication function and uses the previously set password for wireless communication through the wireless LAN adapter AD. If the wireless LAN adapter AD is connected after the recording device 10 turns on and a password was not previously set, the recording device 10 automatically generates a new password and enables the wireless communication function using the automatically generated password for wireless communication through the wireless LAN adapter AD.

Abstract: In a system in which a server and a client to which a device is connected communicate, the server can execute processes based on the result of checking device operation. The POS terminal of a network system has a device control function for controlling the device, and a diagnostic function for checking operation of the device. To check the operation of the device connected to the client, a maintenance server sends a control command instructing starting the diagnostic function to the POS terminal. The POS terminal stops the device control function if the device control function is executing, starts the diagnostic function, checks operation of the device with the diagnostic function, and returns the result of the checked operation to the maintenance server.

Abstract: A POS terminal 13 has a Control-Device controller 20 including a log recorder 203 that generates log data D11 containing status information data indicating the status of a log item targeted for monitoring the status thereof; a communication manager 204 that transmits the log data D11 generated by the log recorder 203 as a request to a maintenance server 17, and receives process command control data D21 in response from the maintenance server 17; and a command execution unit 205 that executes a process based on the process command control data D21 the communication manager 204 received.

Abstract: The relationship between sending device and receiving device is controlled with a high degree of freedom when sending and receiving data between multiple devices. A POS system has a second tablet terminal that receives data, and a host device. The host device has a server interface that sends data to the second tablet terminal; a storage unit that includes a transmission buffer for storing data and stores buffer link information relating the transmission buffer to the second tablet terminal to which the data is sent; and a communication unit 2 that acquires data and control storing the data to the transmission buffer. When the communication unit stores the data to the transmission buffer, the stored data is sent to the second tablet terminal.

Abstract: A recording device 10 determines if a wireless LAN adapter AD was connected when the recording device 10 turned on; and monitors if a wireless LAN adapter AD becomes connected after the recording device 10 turned on. If the wireless LAN adapter AD is connected after the recording device 10 turns on and a password was previously set, the recording device 10 enables a wireless communication function and uses the previously set password for wireless communication through the wireless LAN adapter AD. If the wireless LAN adapter AD is connected after the recording device 10 turns on and a password was not previously set, the recording device 10 automatically generates a new password and enables the wireless communication function using the automatically generated password for wireless communication through the wireless LAN adapter AD.

Abstract: A recording device 11 has a control unit 20 that executes multiple restore processes. The control unit restores a backbone system based on a restore file stored in a USB memory UM if the recording device 11 is started with the USB memory UM already connected. The control unit initializes the backbone system based on an initialization file in the USB memory UM when the USB memory UM is newly connected while the recording device 11 is already running. The control unit creates a restore file to restore the backbone system, and saves the created restore file to the USB memory UM if an initialization file is not already stored in the USB memory UM.

Abstract: The correlation between a device on the sending side and a device on the receiving side can be controlled with a high degree of freedom when sending and receiving data between multiple devices. A POS system 1 includes a host device 11 with a storage unit 25 having a data storage box 26 that stores data, and a transmission unit that sends data the data storage box 26 stores when data is stored in the data storage box 26; and a display tablet 102 that receives and displays data sent by the host device 11. The display panel 102c of the display tablet 102 is linked to the data storage box 26 of the storage unit 25 of the host device 11.

Abstract: The relationship between sending devices and receiving devices can be controlled with a high degree of freedom when sending and receiving data between multiple devices. A POS system 1 has a control tablet 101 that transmits data, a host device 11, and a display tablet 102. The host device 11 has a storage unit 25 with a data storage box 26 that is related to the display tablet 102 and stores data, and a device control unit 20 that stores data sent by the control tablet 101 in the data storage box 26, sends the data to the display tablet 102, and processes a report sent from the display tablet 102.

Abstract: The quality of a simple matrix type liquid crystal display device is improved. Thus, in a liquid crystal display device in the present invention, in the case of multi-screen drive with divided signal electrodes, wiring electrodes are formed on a first electrode on which plural signal electrodes are formed, and an insulating layer is formed on portions except connecting regions on the wiring electrodes. Further, the wiring electrodes and the signal electrodes are electrically connected with each other in the connecting regions in which the insulating layer is not formed.