| 摘要 |
A service using device operates as a UPnP control point using a service provided by a UPnP device. The service using device includes a service registration unit, a storage unit, a trigger reception unit, a message transmission unit, and a processing unit. The service registration unit registers the service. The storage unit stores information indicating whether the registered service is in use. The trigger reception unit receives a switching trigger related to switching of the service use. The message transmission unit transmits an acknowledgement message for checking whether a service stored as a service not in use is valid to a network when the trigger reception unit receives the switching trigger. The processing unit performs processing based on a response to the acknowledgement message.
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