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US 2004/0175094 A1Published application
A personal video recorder storing digital information in a doubly linked list
AssigneePioneer Digital Technologies, Inc.
InventorsCraig D. Mautner, James B. Fahy, David M. Eltinge
Life of this patent
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Abstract
A portion of a video and/or audio stream of information is stored in a buffer memory as a plurality of data blocks connected together by a doubly linked list. This lets a user view television programs in a time-shifted mode and apply functionality to the television programs such as forward, reverse, playback, and skipping commercials.
Claims28
An apparatus for operating on a stream of digital information, comprising:
- a buffer memory comprising a plurality of data blocks connected together as a doubly linked list wherein each of said data blocks contains a portion of said digital information;
- and a control mechanism configured to operate on said digital information according to one or more control commands.
A method for operating on digital information from a video or audio stream, comprising the steps of:
- receiving a stream of digital information;
- dividing said digital information into a plurality of data blocks;
- connecting together said data blocks as a doubly linked list wherein each of said data blocks contains a portion of said digital information;
- and operating on said digital information according to one or more control commands.
1 more element
A personal video recorder, comprising:
- a tuner configured to convert a broadcast signal to a baseband digital signal;
- an encoder configured to compress said baseband digital signal creating digital information ready to be stored;
- a buffer memory configured to temporarily store said digital information, said buffer memory comprising a plurality of data blocks connected together as a doubly linked list wherein each of said data blocks contains a portion of said digital information;
- a permanent storage memory for storing said digital information;
- a control mechanism configured to operate on said digital information in a time shifted mode according to one or more control commands;
- a decoder configured to decompress said digital information.
3 more elements
Dependencies are inferred from the claim text.