Comcast Cable Communications, LLC

Jeremy Pfeifer

Christopher Lintz

Garey Hassler

Tedd Dawson

Methods and systems are described for storing content. One or more sections of the stored content may be subdivided into user-specific portions and common portions. The user-specific portions may be stored in user-specific storage associated with corresponding accounts of a plurality of user accounts. The common portions may be stored in common storage associated with the plurality of user accounts. User accounts may request access to the stored content. One or more caching criteria may be used to determine whether to cache any common portions of the stored content. Requests for the content may be processed using the common portions stored in the cache storage.

Methods and systems for accessing stored content

A computing device (e.g., a content packager) may receive a request for content (e.g., video, audio, games, applications, data). The computing device may send a second request for the requested content to an encoder. In response to the second request, the computing device (e.g., the content packager) may receive the requested content and a content manifest associated with the requested content. The computing device may determine that encryption key data (e.g., an encryption key and/or key metadata) for the requested content is not in a cache associated with the computing device. The computing device (e.g., the content packager or a cache associated with the content packager) may send a request for the encryption key data associated with the requested content to a cache associated with a second computing device, based on the determination that the encryption key data is not in the cache associated with the computing device.

Synchronization of digital rights management data

Methods and apparatus are disclosed for efficient storage and retrieval of content items, such as recorded content items of a cloud DVR system or other system storing content items.

Caching recorded content segments on playback

Delay in delivery of a content asset to a user device may be reduced by fetching a portion of the content asset and storing it in a cache. From the cache, segments of the portion of the content asset may be sent to the user device. An indication of a trickplay command associated with playback of the content asset on the user device may be received, such as a fast forward command, a rewind command, or a play command. Based on a type of the trickplay command, the portion of the content asset in the cache may be adjusted, such as by adjusting a time to live (TTL) of a segment of the content asset in the cache, by evicting a segment of the content asset in the cache, or by predictively pre-fetching and storing other segments to the cache.

Systems and methods for storing and delivering content assets

Methods and systems for cache optimization are described. Content items served to client devices of a content distribution network may be associated with a cache value. The cache value for a content item may cause a cache device to cache the content item for a period of time. The cache value for the content item may be updated based on increasing or decreasing popularity. The content item may be encoded at a plurality of bitrates, and cache values may vary across the plurality of bitrates such that multiple copies of the content item may each be cached for varying periods of time depending on a corresponding bitrate.

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Denver, CO, United States of America

Jeremy Pfeifer