US 2010/0149976 A1 · System and Method for Adaptive Removal of Delay Jitter Effect and Low End-to-End Delay

Abstract

Systems, modules, methods and computer readable mediums for adaptive removal of delay jitter and low end-to-end delay are provided. The method may include the following operations at a delay buffer: calculating a holding time for a plurality of packets input into a network; buffering each of the plurality of packets for the duration of the holding time; and arranging the buffered packets in a sequence indicative of an order in which the buffered packets were input into the network. The holding time may be based on a difference between a current maximum delay of the plurality of packets in a current time window and a delay of a first packet of the plurality of packets in the current time window. The method may also include playing back the buffered packets at a selected playback time. Playing back the buffered packets may be performed at a reception mechanism.

Claims20

Dependent claims

A method comprising:

calculating, by a delay buffer, a holding time for a plurality of packets input into a network at a selected interval and transmitted during a current time window, the holding time being based on a difference between a current maximum delay of the plurality of packets in the current time window and a delay of a first packet of the plurality of packets in the current time window;
buffering, at the delay buffer, each of the plurality of packets for a duration of the holding time;
arranging, by the delay buffer, the buffered packets in a sequence indicative of an order in which the buffered packets were input into the network;
and
playing back, at a reception mechanism, at a selected playback time, a selected one of the buffered packets, the selected playback time being based on at least:
the holding time;
an interval of time over which a first plurality of the buffered packets were input into the network;
and
a value indicative of an order in which the selected one of the buffered packets was input into the network.

6 more elements

A computer-based system comprising:

a memory having a plurality of maximum delay values stored therein;
a weighted averager communicatively coupled to the memory, and adapted to receive one or more of the plurality of maximum delay values from the memory and calculate a current maximum delay of a plurality of packets input into a network, the current maximum delay being based on a weighted moving average of the plurality of maximum delay values;
and
a buffer controller communicatively coupled to the weighted averager, and adapted to:
receive the current maximum delay of the plurality of packets;
calculate a holding time for the plurality of packets based on a difference between the current maximum delay of the plurality of packets and a delay of a first packet of the plurality of packets;
buffer each of the plurality of packets for a duration of the holding time;
arrange the buffered packets in a sequence indicative of an order in which the buffered packets were input into the network;
and
playback the arranged packets at a selected playback time.

7 more elements

Dependencies are inferred from the claim text.

System and Method for Adaptive Removal of Delay Jitter Effect and Low End-to-End Delay

Life of this patent

System and Method for Adaptive Removal of Delay Jitter Effect and Low End-to-End Delay

Life of this patent

Abstract

Claims20