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    • 5. 发明授权
    • Optional apparatus connectable to other apparatus
    • 可选设备可连接到其他设备
    • US5841362A
    • 1998-11-24
    • US597275
    • 1996-02-06
    • Akihiro NakamuraJunichi KimizukaHiroshi HashimotoSoya EndoHitoshi Machino
    • Akihiro NakamuraJunichi KimizukaHiroshi HashimotoSoya EndoHitoshi Machino
    • B41J13/00H04L12/423G03G21/00
    • B41J13/00B41J13/0009H04L12/423
    • An optional apparatus which can be connected to a printer or other optional apparatus includes a communication section for communicating with other apparatus and a control section which executes a command in response to the command received via the communication section; wherein the communication section has a first communication path for receiving a data string from an apparatus on the upstream side in communication and for transmitting the received data string to an apparatus on the downstream side of the communication and a second communication path for receiving a data string received from the apparatus on the downstream side of communication and for transmitting the received data string to the apparatus on the upstream side of the communication; and the control section executes a command in the command string received via the first communication path or the second communication path and loads the data indicating the execution result of the command in the command string.
    • 可以连接到打印机或其他可选设备的可选设备包括用于与其他设备通信的通信部分和响应于经由通信部件接收的命令来执行命令的控制部分; 其中所述通信部分具有用于从通信中的上游侧的装置接收数据串的第一通信路径,以及用于将所接收的数据串发送到所述通信的下游侧的装置,以及用于接收数据串的第二通信路径 从通信的下游侧的装置接收并将接收到的数据串发送到通信的上游侧的装置; 并且控制部分执行经由第一通信路径或第二通信路径接收的命令串中的命令,并将指示命令的执行结果的数据加载到命令串中。