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US 2007/0183462 A1Published application
Method and apparatus for aligning source data streams in a communications network
OwnerCharles Daugherty, Kenneth Mizialkoinventors
Life of this patent
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Abstract
One method includes detecting a frame boundary of a source data stream at a detected position at a first point in time (T1). An offset defined by the displacement of the frame boundary from a pre-determined position at a second point in time (T2) is computed. An alignment adjustment corresponding to the offset is communicated to a source of the source data stream.
Claims29
A method comprising:
- a) detecting a frame boundary of a source data stream at a detected position at a first point in time (T1);
- b) computing an offset defined by the displacement of the frame boundary from a pre-determined position at a second point in time (T2);
- and
- c) communicating an alignment adjustment to a source of the source data stream, wherein the alignment adjustment corresponds to the offset.
1 more element
An apparatus comprising:
- an alignment node coupled to receive a source data stream organized into frames from a source, wherein the alignment node generates an alignment adjustment corresponding to an offset defined by a displacement of a frame boundary detected at a detected position at a first point in time (T1) from a pre-determined position at a second point in time (T2).
An apparatus comprising:
- a plurality of sources each providing a source data stream organized into frames;
- and
- an alignment node coupled to receive each source data stream into an associated input buffer, wherein for each source the alignment node generates an associated alignment adjustment corresponding to an offset defined by a displacement of a frame boundary detected at a detected position at a first point in time (T1) from a pre-determined position within the associated input buffer at a second point in time (T2).
A method comprising:
- (a) receiving a source data stream including one of a plurality of frames forming a multiframe from a source, the frame having a multiframe position;
- (b) computing a multiframe adjustment corresponding to a difference between the multiframe position and an expected position;
- and
- (c) communicating the multiframe adjustment to the source.
1 more element
A method comprising:
- a. detecting a displacement of a frame boundary of a source-provided data stream from a pre-determined position at a pre-determined time within an input buffer of an alignment node;
- b. communicating a first frame adjustment having a first granularity to the source;
- and
- c. communicating a second frame adjustment having a second granularity to the source to reach one of a frame alignment and a multiframe alignment of the source data stream with the alignment node.
1 more element
Dependencies are inferred from the claim text.