International Business Machines Corporation

Cris W Sandoval

Eric Hsiao

Jennie Ching

Peter S Lee

Warren R Vollinger

The present invention provides a system and computer readable medium for object retransmission in an asynchronous environment without a continuous network connection in a digital media distributor (DMD) system. The system and computer readable medium include receiving objects in a receiver from a central site, generating a response document in the receiver, and sending the response document asynchronously to the central site. The received response documents are then utilized in the central site to determine which object to retransmit to the receiver. In another aspect of the present invention, the central site manages the inventory of objects in the receiver by instructing the receiver to delete objects not needed.

System for object retransmission without a continuous network connection in a digital media distributor system

A method and system of synchronizing files between a central site and a plurality of remote sites is disclosed. The method and system comprises providing a list of files to the plurality of remote sites by the central site, prior to a callback time of the remote sites and reporting which of the files are missing by each of the plurality of remote sites to the central site. The method and system further includes determining within the central site which of the files needs to be sent to each of the plurality of remote sites. Accordingly, a system and method in accordance with the present invention helps deliver content from a central site to multiple remote sites. A system and method in accordance with the present invention uses the DMD in conjunction with a software client described below to maintain the file synchronization between the central server and remote site servers.

Method and system for file system synchronization between a central site and a plurality of remote sites

The present invention provides a method for object retransmission in an asynchronous environment without a continuous network connection in a digital media distributor (DMD) system. The method includes receiving objects in a receiver from a central site, generating a response document in the receiver, and sending the response document asynchronously to the central site. The received response documents are then utilized in the central site to determine which object to retransmit to the receiver. In another aspect of the present invention, the central site manages the inventory of objects in the receiver by instructing the receiver to delete objects not needed.

Method for object retransmission without a continuous network connection in a digital media distributor system

Aspects for achieving efficient file transfer and traffic management in a digital media distributor system are presented. The aspects include a central site server, at least one local traffic system, and an Internet file server (IFS) coupled between the central site server and the at least one local traffic system. The IFS acts as an intermediary between the central site and the at least one local traffic system, wherein the IFS supports file transfer in both directions between the central site and the at least one local traffic system.

Method and system for efficient file transfer to/from a local traffic system with a DMD system

Aspects for managing subsystem processes from a central site in a digital media distributor system are presented. The aspects include utilizing a plurality of threads as a task manager in a central site server of the digital media distributor, and autonomously controlling initiation and termination of one or more subsystem processes with the task manager. The aspects further include providing the task manager as a main program thread of an operating system of a central site server of the DMD system, and managing subsystem processes from start-up to shut down, including states of online, offline, process inoperable, deadlock inoperable, and spawn inoperable, with the task manager to dynamically manage the DMD system.

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Santa Monica, CA, United States of America

Cris W Sandoval