Patent ID: 7093000
Filing Date: 2006-08-15
Classification: H04H,H04N,Y10S

Abstract:
1. A transmitting apparatus comprising a transmitting device for transmitting a hierarchical structure of a directory for hierarchically managing locations of contents data, comprising: managing means for managing a hierarchical structure of a directory composed of a container entry and a leaf entry, a container entry containing information in the immediately lower hierarchical level thereof, a leaf entry being disposed in the immediately lower hierarchical level of a container entry, a leaf entry not containing information in the immediately lower hierarchical level thereof; detecting means for detecting a change of the hierarchical structure of the directory managed by said managing means and obtaining first difference information and second difference information corresponding to the detected result, the first difference information being the difference of container entries, the second difference information being the difference of leaf entries; and first transmitting means for transmitting said first difference information at first predetermined time cyclically; second transmitting means for transmitting said second difference information at second predetermined time cyclically; and third transmitting means for transmitting third difference information for reproducing the hierarchical structure of the directory at a third predetermined time period; wherein said third predetermined time period is variably designated in accordance with operating state information collected by monitoring operating states of at least one of a receiving side.