Caching directory server data for controlling the disposition of multimedia data on a network

A directory server and multimedia data technology, applied in the field of communication, can solve problems such as large bandwidth, poor availability and performance of mobile devices

Inactive Publication Date: 2007-08-22
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bandwidth consumed in accessing the CDS from a mobile device can be very large if the mobile device has to enumerate a large number of objects
Mobile communication devices usually have limited bandwidth compared to wired devices, so mobile devices may show poor availability and performance if they are required to repeatedly access such a large amount of data

Method used

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  • Caching directory server data for controlling the disposition of multimedia data on a network
  • Caching directory server data for controlling the disposition of multimedia data on a network
  • Caching directory server data for controlling the disposition of multimedia data on a network

Examples

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Embodiment Construction

[0031] In the following description of various exemplary embodiments, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration various embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized, as structural and operational changes may be made without departing from the scope of the present invention.

[0032] In general, the invention provides a way of controlling the deployment of multimedia data by a control device. The control device utilizes catalog data describing multimedia objects and defined relationships (eg hierarchical structures) between multimedia objects. Metadata may include information such as the location of multimedia data files, description and classification of multimedia objects, codecs, transport protocols, custom user data, and the like. Relational data may include collection definitions or containers that group multimedia objects.

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Abstract

Synchronizing content description data between devices on an ad hoc peer-to-peer network involves storing a plurality of data entries on a directory server. Each data entry describes one or more multimedia data objects accessible via the network. A synchronization object of the directory server is associated with the data entries. The synchronization object is capable of describing changes to the data entries. The data entries are downloaded from the directory server to a cache of a control point device via the network. The synchronization object of the directory server is changed in response to a change in at least one of the data entries of the directory server. The cache of the control point device is updated with the change in the at least one data entry based on the changing of the synchronization object of the directory server.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 60 / 603,021, filed August 19,2004. technical field [0003] The present invention relates generally to communications, and more particularly to controlling multimedia data in a consumer electronics network environment. Background technique [0004] Mobile communication devices, such as cellular telephones, are gaining wider acceptance as capabilities are added to such devices. Modern mobile technology has become an important niche in the growing field of personal digital communications. Some mobile communication devices include features that allow the device to communicate with computers and other consumer electronics devices. For example, known as Universal Plug and Play TM The (UPnP) standard provides a means for heterogeneous processing devices to exchange data over a network. The UPnP standard defines an architecture for peer-to-peer network ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28G06F17/30
Inventor V・斯蒂尔比K・卡阿勒拉J・科斯塔－勒凯纳M・塔姆斯基
Owner NOKIA CORP
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