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US 8,265,449 B2Granted
Information delivery apparatus, stream recording apparatus, recording system, stream reproducing apparatus, and record reproducing system
AssigneePanasonic Corporation
InventorsKosaku Nagahara, Tomoki Mizobuchi, Osamu Goto, Takuya Nomura
Life of this patent
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Abstract
An information delivery apparatus includes an encoder for encoding and packetizing digital data of an image or an audio, a frame assembly identification packet insertion unit for inserting a frame assembly identification packet including time information in the data packetized by the encoder on a frame assembly basis, and a transmission side communication module for outputting to a network the stream data having the frame assembly identification packet inserted therein by the frame assembly identification insertion unit.
Claims9
A stream recording apparatus comprising:
- a receiver side communication module for receiving from a network stream data having a frame assembly identification packet including time information inserted therein on a frame assembly basis, and for outputting the stream data;
- a plurality of buffers for storing temporarily the stream data output by the receiver side communication module;
- a buffer assignment unit for storing assignment information indicating a corresponding relationship between a plurality of information delivery apparatuses and the plurality of buffers;
- a stream sorting unit for determining, based on the assignment information stored in the buffer assignment unit, which of the buffers is to hold the stream data output by the receiver side communication module;
- a stream selector for causing, according to the determination by the stream sorting unit, the determined buffer to hold the stream data output by the receiver side communication module;
- a frame assembly extraction unit for reading the stream data from the determined buffer on a frame assembly basis;
- a frame assembly synchronizing unit for, based on the time information included in the frame assembly identification packet inserted to the stream data, maintaining synchronization between frame assemblies in the stream data read by the frame assembly extraction unit, and for outputting synchronization information for associating frame assemblies of the same time with each other;
- and
- a writing unit for recording the stream data read by the frame assembly extraction unit in a recording medium.
6 more elements
A stream recording apparatus comprising:
- a receiver side communication module for receiving packetized data from a network and outputting the packetized data;
- a frame assembly identification packet generation unit for extracting a frame assembly by analyzing packets of the packetized data output by the receiver side communication module, and for inserting a frame assembly identification packet including time information in the packetized data on a frame assembly basis;
- a plurality of buffers for temporarily storing the stream data having the frame assembly identification packet inserted therein by the frame assembly identification packet generation unit;
- a buffer assignment unit for storing assignment information indicating a corresponding relationship between a plurality of information delivery apparatuses and the plurality of buffers;
- a stream sorting unit for determining, based on the assignment information stored in the buffer assignment unit, which of the buffers is to hold the stream data having the frame assembly identification packet inserted therein by the frame assembly identification packet generation unit;
- a stream selector for causing the determined buffer to hold the stream data having the frame assembly identification packet inserted therein by the frame assembly identification packet generation unit, according to a determination by the stream sorting unit;
- a frame assembly extraction unit for reading the stream data from the buffer on a frame assembly basis;
- a frame assembly synchronizing unit for maintaining synchronization between frame assemblies in the stream data read by the frame assembly extraction unit based on time information included in the frame assembly identification packet inserted in the stream data, and for outputting synchronization information for associating frame assemblies of the same time;
- and
- a writing unit for recording the stream data read by the frame assembly extraction unit to the recording medium.
7 more elements
Dependencies are inferred from the claim text.