Video Aware Traffic Management

Abstract

A receiver for generating an video output from a stream of data packets includes circuitry for decoding the stream of packets into a video signal, circuitry for generating video frames from the video signal, circuitry for detecting whether a missing packet is associated with a video frame of a first type and circuitry for selectively requesting retransmission of a missing packet responsive to the detecting circuitry. The decoding circuitry further comprises circuitry for concealing errors using error recovery without requesting retransmission due to missing frames of the first type

1 . A receiver for generating an video output from a stream of data packets, comprising:
 circuitry for decoding the stream of packets into a video signal;   circuitry for generating video frames from the video signal;   circuitry for detecting whether a missing packet is associated with a video frame of a first type; and   circuitry for selectively requesting retransmission of a missing packet responsive to the detecting circuitry;   wherein said decoding circuitry further comprises circuitry for concealing errors using error recovery without requesting retransmission due to missing frames of the first type.   
   
   
       2 . The receiver of  claim 1  wherein the detecting circuitry further comprises circuitry for determining a position of a video frame associated with a missing packet within an order of received frames. 
   
   
       3 . The receiver of  claim 1  further comprising:
 circuitry for detecting whether a missing packet is associated with a video frame of a second type.   
   
   
       4 . The receiver of  claim 3  wherein the second type is an I-frame or a video anchor frame. 
   
   
       5 . The receiver of  claim 3  wherein the requesting retransmission circuitry further comprises circuitry for requesting retransmission of said missing packet when said missing packet is associated with a video frame of the second type. 
   
   
       6 . A method for generating a video output from a stream of data packets in a receiver, comprising:
 decoding the stream of packets into a video signal;   generating video frames from the video signal;   upon determining that a packet is missing from the stream, detecting a type of video frame associated with the missing packet and responsive to the type, selectively:
 concealing errors using error recovery without requesting retransmission due to missing frames of a first type; or 
 requesting retransmission of a missing packet. 
   
   
   
       7 . The method of  claim 6  wherein the detecting step comprises the step of determining a position of a video frame associated with a missing packet within an order of received frames. 
   
   
       8 . The method of  claim 6  further comprising:
 detecting whether a missing packet is associated with a video frame of a second type.   
   
   
       9 . The method of  claim 8  wherein the second type is an I-frame or a video anchor frame. 
   
   
       10 . The method of  claim 8  wherein the requesting retransmission step further comprises requesting retransmission of said missing packet when said missing packet is associated with a video frame of the second type.