Communication device and communication method
A technology for communication devices and terminal devices, which is applied in the directions of non-redundant fault handling, transmission systems, instruments, etc.
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no. 1 example
[0018] A-1. System configuration
[0019] like figure 1 As shown, the system 2 according to the first embodiment includes: a printer 4 , a personal computer (PC) 6 and a network 8 . The printer 4 and the PC 6 are connected to a network 8 and can communicate with each other via the network 8 .
[0020] A-2. Structure of printer
[0021] The printer 4 includes a CPU 12 , a ROM 14 , a RAM 16 , an operation unit 18 , a display unit 20 , a printing unit 22 , and a network interface 24 .
[0022] The CPU 12 performs overall control of all components in the printer 4 .
[0023] The ROM 14 stores programs executed by the printer 4 to realize various kinds of processing, for example, a program implementing printing processing. The ROM 14 also stores a Web server program for implementing a Web server function on the printer 4 . By executing the web server program, the CPU 12 executes server processing described later. The ROM 14 stores data used when the printer 4 determines wheth...
no. 2 example
[0082] Next, refer to Figure 7 A second embodiment of the present invention is described. The second embodiment differs from the first embodiment only in error determination processing. Therefore, only the error determination processing according to the second embodiment will be described here.
[0083] Figure 7 is a flowchart showing steps in error determination processing according to the second embodiment. because Figure 7 S300-S310 in corresponds to the first embodiment Figure 4 The description of these steps of S200-S210 will be omitted.
[0084] If in S315, the printer 4 determines that there is no setting item that may be found to contain an error in the combination (S315: NO), since it is not necessary to update the error determination result, the printer 4 ends the current processing.
[0085] However, when the printer 4 determines that there is any setting item that may be found to contain an error in combination (S315: YES), in S325 the printer 4 temporari...
no. 3 example
[0098] Next, refer to Figure 8 A third embodiment of the present invention is described. Since the third embodiment differs from other embodiments only in error determination processing, only the error determination processing according to the third embodiment will be described below. The third embodiment is applied to a case where a combination of an IP address setting item, a subnet mask setting item, and a gateway setting item is the subject of an erroneous determination that matches combination 1 in the data combination table 60 .
[0099] Figure 8 is a flowchart showing the steps of error determination processing according to the third embodiment. because Figure 8 S400-S410 in the first embodiment and the Figure 4 The same as S200-S210 in , the description of these steps is omitted.
[0100] If the printer 4 determines in S345 that there is no setting item for which an error can be determined in combination (S345: NO), since there is no need to update the error d...
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