US 12,413,264 B2
High density rotary joint for contactless data transfer
Holger Steffens, Munich (DE)
Assigned to Schleifring GmbH, Fürstenfeldbruck (DE)
Filed by Schleifring GmbH, Fürstenfeldbruck (DE)
Filed on Feb. 12, 2025, as Appl. No. 19/051,994.
Application 19/051,994 is a continuation of application No. PCT/EP2023/054185, filed on Feb. 20, 2023.
Claims priority of application No. 22191190.2 (EP), filed on Aug. 19, 2022.
Prior Publication US 2025/0233617 A1, Jul. 17, 2025
Int. Cl. H04B 5/00 (2024.01); G02F 1/225 (2006.01); H01L 41/22 (2013.01); H04B 5/02 (2006.01); H04B 5/22 (2024.01); H04L 7/00 (2006.01)
CPC H04B 5/22 (2024.01) 12 Claims
OG exemplary drawing
 
1. A rotating capacitive data link system comprising:
a first body and a second body, the first body being rotatable relative to a second body around a rotation axis,
the first body including one or more circular signal transmission lines, wherein and each of the one or more circular signal transmission line includes at least two transmission line segments, with at least one mechanical gap between the at least two transmission line segments,
the second body including one or more circularly arranged sets of receiving couplers, wherein each of the one or more circularly arranged sets of receiving couplers comprises at least two receiving couplers arranged circumferentially around the rotation axis,
wherein:
each of the one or more circularly arranged sets of receiving couplers is capacitively coupled to one of the one or more circular signal transmission lines such that, depending on a relative rotational position or angle between the first body and the second body, there exist multiple capacitively coupled paths between the at least two transmission line segments of said each of the one or more circular signal transmission lines and at least two receiving couplers arranged circumferentially around a rotation axis of a matching set of the at least one circularly arranged set of receiving couplers, and
each of the at least two receiving couplers is connected to a receive signal processor at the second body,
wherein:
the receive signal processor is further configured to provide at least one error or status matrix that comprises at least one data field for every combination of the at least two transmission line segments and the at least two receiving couplers of each of the one or more circular signal transmission lines with a corresponding matching set of the at least one circularly arranged set of receiving couplers, wherein the at least one data field is configured to contain at least one of an error value and a status indication value.