Invention Grant
US09092180B2 Printer-server connections 有权
打印机 - 服务器连接

Printer-server connections
Abstract:
A plurality of printing devices are connected to a cloud server via a persistent connection. The cloud server identifies at least one inactive printing device and provides the at least one inactive printing device with non-persistent connection information via the persistent connection. A polling message is received from the at least one inactive printing device via the non-persistent connection. The cloud server indicates when the at least one inactive printing device is to return to an active state.
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