HTTP Adaptive Streaming Manifest Management via Local Chunk Generation

The patent applies preliminary action by having the client generate chunk identifiers locally in advance based on time segments, rather than retrieving them from the server. The client anticipates future playback needs by pre-generating identifiers for time segments that may be needed for time-shifted playback, thus avoiding frequent server requests

The patent implements self-service by enabling the client to autonomously generate chunk identifiers using its own clock and the known chunk duration. The client serves itself by maintaining a local cache of identifiers and only requesting updates from the server when necessary, rather than relying on continuous server-provided identifier lists

The patent applies partial action by having the client retrieve only the essential manifest file information periodically rather than continuously. The client generates identifiers locally for normal playback and only performs partial updates by requesting the manifest file from the server when the local cache needs refreshment, thus reducing server load while maintaining adequate synchronization

The patent implements periodic action by establishing a regular interval for manifest file retrieval based on the chunk duration and time-shifted playback requirements. Instead of continuous or frequent requests, the client periodically updates its local identifier cache at intervals that balance synchronization needs with server load reduction