公开(公告)号：US20240364440A1

公开(公告)日：2024-10-31

申请号：US18309000

申请日：2023-04-28

Applicant: iBiquity Digital Corporation

Inventor： Russ Iannuzzelli ,  Janet Peyla ,  Jefferey Detweiler

IPC: H04H20/59

CPC classification number: H04H20/59 ,  H04H2201/18 ,  H04H2201/20

Abstract: A method performed by at an importer-exporter of an in-band on-channel (IBOC) digital radio broadcasting system comprises: receiving, from a first audio client, first protocol data units (PDUs) (first PDUs) of encoded main audio and that include first sequence numbers that progress in a first order; sending the first PDUs for transmission over a logical channel of an IBOC waveform; receiving, from a second audio client, second PDUs of encoded non-main audio and that include second sequence numbers; aligning the second PDUs to the first PDUs by aligning the second sequence numbers to the first sequence numbers, to produce aligned second PDUs; and switching to sending the aligned second PDUs for transmission over the logical channel in place of the first PDUs such that the second sequence numbers of the aligned second PDUs after switching maintain the first order of the first sequence numbers as established prior to switching.