Patent ID: 7490169

Claim:
A presentation system for presenting a presentation having a first presentation portion obtained from first presentation data, and a second presentation portion obtained from second presentation data, wherein at least a portion of one of said first and second presentation data is provided to a first network node via a communications network, comprising: a time generator for outputting at least first and second master timing values for synchronizing a performance of said first and second presentation data at the first network node; a presentation controlling node for transmitting to at least the first network node, via the communications network, presentation control information including (a) and (b) following: (a) first information for accessing first presentation data for performing at the first network node, and (b) a first time value derived from said first master timing value, wherein said first time value is indicative of a time for performing said first presentation data at the first network node; a presentation time determining component at said first network node for determining a second time value relative to performing at least a portion of said second presentation data at said first network node, wherein said second time value is determined using said second master timing value; a time delay determining component at said first network node for determining a time delay between said first time value and a second time value; a presentation synchronization component for using said time delay to delay the performing, at said first network node, of one of: at least a portion of said first presentation data, and said second presentation data; wherein at least one of: (a) said time generator generates each of said first and second master timing values using a substantially identical reference of time; (b) said second presentation data is received at the first network node via the communications network; (c) said first master timing value is approximately indicative of an origination time for said first presentation data; and (d) said second master timing value is approximately indicative of an origination time for said second presentation data.