Method and apparatus for synchronizing device providing content directory service with device not providing content directory
AssigneeSamsung Electronics Co., Ltd.
InventorsSe-hee Han, Joo-yeol Lee, Seung-jae Oh, Dong-shin Jung, Won-seok Kwon
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Abstract
Provided is a method for synchronizing contents included in devices in a Universal Plug and Play (UPnP) network. A control point device, which contains local content but cannot provide a content directory service, converts information regarding content objects of the control point device into Digital Item Description Language Lite (DIDL-Lite) format, and manages a mapping table, thereby performing synchronization with a device such as a UPnP media server providing a content directory service, without loading a separate protocol stack.
Claims11
A synchronization method for synchronizing a first Universal Plug and Play (UPnP) device with a second UPnP device in a UPnP network, the method comprising:
- generating, by the UPnP first device, a synchronization document comprising an identifier that specifies an object to be synchronized from among the content objects of the first UPnP device and the second UPnP device and information regarding a synchronization policy for synchronizing content directory services that provides metadata of contents;
- providing the synchronization document to the second UPnP device;
- and
- synchronizing the first UPnP device and the second UPnP device based on the synchronization document, update information of the first UPnP device regarding the content objects of the first UPnP device to be synchronized, and information indicating a location from which the update information of the first UPnP device may be obtained by the second UPnP device,
- wherein the first UPnP device provides no content directory service and the second UPnP device provides a content directory service,
- wherein a format of the synchronization document is Digital Item Description Language Lite (DIDL-Lite), and
- wherein the information indicating the location comprises a Uniform Resource Identifier (URI).
A synchronization apparatus for synchronizing a first Universal Plug and Play (UPnP) device with a second UPnP device in a UPnP network, the synchronization apparatus comprising:
- a synchronization document generator which generates a synchronization document comprising an identifier that specifies an object to be synchronized from among the content objects of the first UPnP device and the second UPnP device and information regarding a synchronization policy for synchronizing content directory services;
- a synchronization document providing unit which provides the synchronization document to the second UPnP device;
- and
- a synchronization performing unit that synchronizes the first UPnP device and the second UPnP device based on the synchronization document, update information of the first UPnP device regarding the content objects of the first UPnP device to be synchronized, and information indicating a location from which the update information of the first UPnP device may be obtained by the second UPnP device,
- wherein the first UPnP device provides no content directory service and the second UPnP device provides a content directory service,
- wherein a format of the synchronization document is Digital Item Description Language Lite (DIDL-Lite), and
- wherein the information indicating the location comprises a Uniform Resource Identifier (URI).
Dependencies are inferred from the claim text.