US 7,542,412 B2
Self-routing, star-coupler-based communication network
Mathias Rausch, Markt Schwaben (Germany); and Christopher Temple, Munich (Germany)
Assigned to Freescale Semiconductor, Inc., Austin, Tex. (US)
Appl. No. 10/508,771
PCT Filed Nov. 01, 2002, PCT No. PCT/EP02/12277
§ 371(c)(1), (2), (4) Date Jun. 09, 2005,
PCT Pub. No. WO03/081849, PCT Pub. Date Oct. 02, 2003.
Claims priority of application No. 0206732.0 (GB), filed on Mar. 22, 2002.
Prior Publication US 2005/0243715 A1, Nov. 03, 2005
Int. Cl. H04J 1/16 (2006.01)
U.S. Cl. 370—216  [370/217; 370/225; 370/228; 370/238; 370/400] 12 Claims
OG exemplary drawing
 
1. A self routing communication network, comprising:
a plurality of nodes;
a plurality of star couplers each having a plurality of inputs and a plurality of outputs; and
communication paths coupled between the plurality of star couplers and the plurality of nodes for communication therebetween of frames of information, wherein
the communication paths include at least one alternative communication path;
the star couplers each include an input detector to sense which input of the plurality of inputs of the star coupler first receives a frame of information and for passing only the frame of information first received; and
the frames of information each have a frame-start-sequence, and the star couplers each further include a frame-start-sequence changer to change the frame-start-sequence before outputting the frame such that an interconnection failure is diagnosable by analyzing the frame-start-sequence, the frame-start-sequence changer comprising a shortener to reduce the size of the frame-start-sequence by a predetermined amount.