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Decoder buffer for streaming video receiver and method of operation
| Details |
Inventors: Radha, Hayder; Parthasarathy, Kavitha;
Assignee: Koninklijke Philips Electronics N.V. (Eindhoven, NL)
Primary Examiner: Faile; Andrew
Assistant Examiner: Huynh; Son P.
Attorney, Agent or Firm:
There is disclosed a decoder buffer capable of receiving streaming video data packets and storing the data packets in a plurality of access units. Each of the access units holds at least one data packet associated with a selected frame in the streaming video. The decoder buffer comprises: 1) a first buffer region comprising at least one access unit for storing data packets that are less immediately needed by the video decoder; and 2) a re-transmission region comprising at least one access unit for storing data packets that are most immediately needed by the video decoder. The decoder buffer, in response to a detection of a missing data packet in the re-transmission region, requests that the streaming video transmitter retransmit the missing packet. |
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DETAILED DESCRIPTION The present invention is embodied in an Integrated Transport Decoder (ITD) buffer model.
One key advantage of the ITD model is that it eliminates the separation of a network-transport buffer, which is typically used for removing delay jitter and recovering lost data, from the video decoder buffer.
This can significantly reduce the end-to-end delay, and optimize the usage of receiver resources (such as memory).
It is a primary object of the present invention to provide, for use with a video decoder capable of decoding streaming video, a decoder buffer capable of receiving from a streaming video transmitter data packets comprising the streaming video and storing the data packets in a plurality of access units.
Each of the, access units is capable of holding at least one data packet associated with a selected frame in the streaming video.
The decoder buffer comprises: 1) a first buffer region comprising at least one access unit capable of storing data packets that are less immediately needed by the video decoder; and 2) a re-transmission region comprising at least one access unit capable of storing data packets that are most immediately.
needed by the video decoder, wherein the decoder buffer, in response to a detection of a missing, data packet in the re-transmission region requests that the streaming video transmitter retransmit the missing packet.
In one embodiment of the present invention, at least one of the data packets are stored in the first buffer region for a period of time equal to a start-up delay time of the decoder buffer.
In another embodiment of the present invention, the data packets are first stored in the first buffer region and are shifted into the re-transmission region.
In still another embodiment of the present invention, the first buffer region is separate from the re-transmission region.
In yet another embodiment of the present invention, the first buffer region overlaps at least a portion of the re-transmission region.
In a further embodiment of the present invention, the first buffer region overlaps all of the re-transmission region
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